diff --git "a/static/css/style.css" "b/static/css/style.css"
new file mode 100644--- /dev/null
+++ "b/static/css/style.css"
@@ -0,0 +1,5098 @@
+/* Reset and Base Styles */
+* {
+    margin: 0;
+    padding: 0;
+    box-sizing: border-box;
+}
+
+:root {
+    /* Enhanced Color Palette */
+    --primary-color: #6366f1;
+    --primary-dark: #4f46e5;
+    --primary-light: #818cf8;
+    --secondary-color: #ec4899;
+    --secondary-dark: #db2777;
+    --accent-color: #06b6d4;
+    --accent-dark: #0891b2;
+    --background-dark: #0f172a;
+    --background-light: #1e293b;
+    --surface-color: #334155;
+    --surface-light: #475569;
+    --text-primary: #ffffff;
+    --text-secondary: #cbd5e1;
+    --text-muted: #94a3b8;
+    --text-inverse: #1e293b;
+    --border-color: #475569;
+    --border-light: #64748b;
+    --success-color: #10b981;
+    --warning-color: #f59e0b;
+    --error-color: #ef4444;
+    --info-color: #3b82f6;
+    
+    /* Gradients */
+    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #ec4899 100%);
+    --gradient-secondary: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
+    --gradient-accent: linear-gradient(135deg, #8b5cf6 0%, #06b6d4 100%);
+    
+    /* Shadows */
+    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
+    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
+    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
+    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
+    --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.3);
+    
+    /* Animations */
+    --transition-fast: 0.2s ease-in-out;
+    --transition-normal: 0.3s ease-in-out;
+    --transition-slow: 0.5s ease-in-out;
+}
+
+body {
+    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
+    background: var(--background-dark);
+    color: var(--text-primary);
+    line-height: 1.6;
+    overflow-x: hidden;
+}
+
+/* Background Animation */
+body::before {
+    content: '';
+    position: fixed;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    background: 
+        radial-gradient(circle at 20% 20%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
+        radial-gradient(circle at 80% 80%, rgba(236, 72, 153, 0.1) 0%, transparent 50%),
+        radial-gradient(circle at 40% 40%, rgba(6, 182, 212, 0.05) 0%, transparent 50%);
+    z-index: -1;
+    animation: backgroundPulse 20s ease-in-out infinite;
+}
+
+@keyframes backgroundPulse {
+    0%, 100% { opacity: 0.3; }
+    50% { opacity: 0.6; }
+}
+
+/* Navigation */
+.navbar {
+    position: fixed;
+    top: 0;
+    left: 0;
+    width: 100%;
+    background: rgba(15, 23, 42, 0.95);
+    backdrop-filter: blur(10px);
+    border-bottom: 1px solid var(--border-color);
+    z-index: 1000;
+    transition: var(--transition-normal);
+}
+
+.nav-container {
+    max-width: 1200px;
+    margin: 0 auto;
+    padding: 0 2rem;
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    height: 70px;
+}
+
+.nav-brand {
+    display: flex;
+    align-items: center;
+    gap: 0.75rem;
+    text-decoration: none;
+    transition: var(--transition-fast);
+}
+
+.nav-brand:hover {
+    transform: translateY(-1px);
+}
+
+.brand-icon {
+    width: 40px;
+    height: 40px;
+    border-radius: 12px;
+    background: var(--gradient-primary);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    box-shadow: var(--shadow-glow);
+}
+
+.brand-icon i {
+    color: white;
+    font-size: 1.2rem;
+}
+
+.brand-text {
+    display: flex;
+    flex-direction: column;
+    gap: 0.1rem;
+}
+
+.brand-name {
+    font-size: 1.25rem;
+    font-weight: 700;
+    color: var(--text-primary);
+    line-height: 1.2;
+}
+
+.brand-tagline {
+    font-size: 0.75rem;
+    color: var(--text-muted);
+    font-weight: 500;
+}
+
+.nav-links {
+    display: flex;
+    gap: 2rem;
+}
+
+.nav-link {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+    padding: 0.5rem 1rem;
+    color: var(--text-secondary);
+    text-decoration: none;
+    border-radius: 8px;
+    transition: var(--transition-fast);
+    font-weight: 500;
+}
+
+.nav-link:hover,
+.nav-link.active {
+    color: var(--text-primary);
+    background: rgba(99, 102, 241, 0.15);
+    transform: translateY(-2px);
+    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
+}
+
+.nav-link.active {
+    position: relative;
+}
+
+.nav-link.active::after {
+    content: '';
+    position: absolute;
+    bottom: -1px;
+    left: 50%;
+    transform: translateX(-50%);
+    width: 20px;
+    height: 2px;
+    background: var(--gradient-primary);
+    border-radius: 2px;
+}
+
+.chat-indicator {
+    position: absolute;
+    top: -2px;
+    right: -2px;
+    width: 8px;
+    height: 8px;
+    background: var(--success-color);
+    border-radius: 50%;
+    display: none;
+}
+
+.chat-indicator.active {
+    display: block;
+    animation: pulse 2s infinite;
+}
+
+.status-indicator {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+    padding: 0.5rem 0.75rem;
+    background: rgba(255, 255, 255, 0.05);
+    border-radius: 20px;
+    border: 1px solid var(--border-color);
+}
+
+.status-dot {
+    width: 8px;
+    height: 8px;
+    border-radius: 50%;
+    background: var(--success-color);
+    animation: pulse 2s infinite;
+}
+
+.status-text {
+    font-size: 0.875rem;
+    color: var(--text-secondary);
+    font-weight: 500;
+}
+
+/* Main Container */
+.main-container {
+    margin-top: 70px;
+    padding: 2rem;
+    max-width: 1200px;
+    margin-left: auto;
+    margin-right: auto;
+}
+
+/* Hero Section */
+.hero {
+    position: relative;
+    text-align: center;
+    padding: 6rem 0;
+    margin-bottom: 4rem;
+    overflow: hidden;
+}
+
+.hero-background {
+    position: absolute;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    z-index: -1;
+}
+
+.floating-shapes {
+    position: absolute;
+    width: 100%;
+    height: 100%;
+}
+
+.shape {
+    position: absolute;
+    border-radius: 50%;
+    opacity: 0.1;
+    animation: float 6s ease-in-out infinite;
+}
+
+.shape-1 {
+    width: 80px;
+    height: 80px;
+    background: var(--primary-color);
+    top: 20%;
+    left: 10%;
+    animation-delay: 0s;
+}
+
+.shape-2 {
+    width: 60px;
+    height: 60px;
+    background: var(--secondary-color);
+    top: 60%;
+    right: 15%;
+    animation-delay: 2s;
+}
+
+.shape-3 {
+    width: 100px;
+    height: 100px;
+    background: var(--accent-color);
+    bottom: 20%;
+    left: 20%;
+    animation-delay: 4s;
+}
+
+@keyframes float {
+    0%, 100% { transform: translateY(0px) rotate(0deg); }
+    50% { transform: translateY(-20px) rotate(180deg); }
+}
+
+.hero-badge {
+    display: inline-flex;
+    align-items: center;
+    gap: 0.5rem;
+    padding: 0.5rem 1rem;
+    background: rgba(99, 102, 241, 0.1);
+    border: 1px solid rgba(99, 102, 241, 0.2);
+    border-radius: 20px;
+    color: var(--primary-light);
+    font-size: 0.875rem;
+    font-weight: 500;
+    margin-bottom: 2rem;
+    animation: fadeInUp 0.8s ease-out;
+}
+
+.hero-cta {
+    display: flex;
+    gap: 1rem;
+    justify-content: center;
+    margin: 2rem 0 3rem 0;
+    flex-wrap: wrap;
+}
+
+.cta-button {
+    display: inline-flex;
+    align-items: center;
+    gap: 0.5rem;
+    padding: 0.875rem 2rem;
+    border: none;
+    border-radius: 12px;
+    font-weight: 600;
+    font-size: 1rem;
+    cursor: pointer;
+    transition: var(--transition-normal);
+    text-decoration: none;
+    min-width: 160px;
+    justify-content: center;
+}
+
+.cta-button.primary {
+    background: var(--gradient-primary);
+    color: white;
+    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
+}
+
+.cta-button.primary:hover {
+    transform: translateY(-2px);
+    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.6);
+}
+
+.cta-button.secondary {
+    background: transparent;
+    color: var(--text-primary);
+    border: 2px solid var(--border-color);
+}
+
+.cta-button.secondary:hover {
+    background: rgba(255, 255, 255, 0.05);
+    border-color: var(--primary-color);
+    transform: translateY(-2px);
+}
+
+.hero-title {
+    font-size: 3.5rem;
+    font-weight: 700;
+    margin-bottom: 1rem;
+    line-height: 1.2;
+}
+
+.gradient-text {
+    background: var(--gradient-primary);
+    -webkit-background-clip: text;
+    -webkit-text-fill-color: transparent;
+    background-clip: text;
+    animation: gradientShift 3s ease-in-out infinite;
+}
+
+@keyframes gradientShift {
+    0%, 100% { background-position: 0% 50%; }
+    50% { background-position: 100% 50%; }
+}
+
+.hero-subtitle {
+    font-size: 1.25rem;
+    color: var(--text-secondary);
+    margin-bottom: 2rem;
+    max-width: 600px;
+    margin-left: auto;
+    margin-right: auto;
+}
+
+.hero-features {
+    display: grid;
+    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
+    gap: 2rem;
+    margin-top: 4rem;
+    max-width: 1000px;
+    margin-left: auto;
+    margin-right: auto;
+}
+
+.feature-item {
+    display: flex;
+    align-items: flex-start;
+    gap: 1rem;
+    padding: 1.5rem;
+    background: rgba(255, 255, 255, 0.05);
+    border-radius: 16px;
+    border: 1px solid var(--border-color);
+    transition: var(--transition-normal);
+    backdrop-filter: blur(10px);
+}
+
+.feature-item:hover {
+    transform: translateY(-4px);
+    background: rgba(255, 255, 255, 0.08);
+    border-color: var(--primary-color);
+    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.2);
+}
+
+.feature-icon {
+    width: 48px;
+    height: 48px;
+    border-radius: 12px;
+    background: var(--gradient-primary);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    flex-shrink: 0;
+    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
+}
+
+.feature-icon i {
+    color: white;
+    font-size: 1.25rem;
+}
+
+.feature-content {
+    flex: 1;
+}
+
+.feature-content h3 {
+    color: var(--text-primary);
+    font-size: 1.125rem;
+    font-weight: 600;
+    margin-bottom: 0.5rem;
+    line-height: 1.3;
+}
+
+.feature-content p {
+    color: var(--text-secondary);
+    font-size: 0.9rem;
+    line-height: 1.5;
+}
+
+.feature-item i {
+    font-size: 1.5rem;
+    color: var(--primary-color);
+}
+
+/* Sections */
+.section {
+    display: none;
+    animation: fadeInUp 0.6s ease-out;
+}
+
+.section.active {
+    display: block;
+}
+
+@keyframes fadeInUp {
+    from {
+        opacity: 0;
+        transform: translateY(30px);
+    }
+    to {
+        opacity: 1;
+        transform: translateY(0);
+    }
+}
+
+.section-header {
+    text-align: center;
+    margin-bottom: 3rem;
+}
+
+.section-header h2 {
+    font-size: 2.5rem;
+    font-weight: 600;
+    margin-bottom: 0.5rem;
+    color: var(--text-primary);
+}
+
+.section-header p {
+    font-size: 1.1rem;
+    color: var(--text-secondary);
+}
+
+/* Buttons */
+.btn-primary,
+.btn-secondary {
+    display: inline-flex;
+    align-items: center;
+    gap: 0.5rem;
+    padding: 0.75rem 1.5rem;
+    border: none;
+    border-radius: 8px;
+    font-weight: 500;
+    text-decoration: none;
+    cursor: pointer;
+    transition: var(--transition-fast);
+    font-size: 1rem;
+}
+
+.btn-primary {
+    background: var(--gradient-primary);
+    color: white;
+    box-shadow: var(--shadow-md);
+}
+
+.btn-primary:hover {
+    transform: translateY(-2px);
+    box-shadow: var(--shadow-lg), var(--shadow-glow);
+}
+
+.btn-secondary {
+    background: rgba(255, 255, 255, 0.1);
+    color: var(--text-primary);
+    border: 1px solid var(--border-color);
+}
+
+.btn-secondary:hover {
+    background: rgba(255, 255, 255, 0.15);
+    border-color: var(--primary-color);
+    transform: translateY(-2px);
+}
+
+/* Search Section */
+.search-container {
+    max-width: 800px;
+    margin: 0 auto;
+}
+
+.search-box {
+    display: flex;
+    gap: 1rem;
+    margin-bottom: 2rem;
+}
+
+.search-box input {
+    flex: 1;
+    padding: 1rem;
+    background: rgba(255, 255, 255, 0.05);
+    border: 1px solid var(--border-color);
+    border-radius: 8px;
+    color: var(--text-primary);
+    font-size: 1rem;
+    transition: var(--transition-fast);
+}
+
+.search-box input:focus {
+    outline: none;
+    border-color: var(--primary-color);
+    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
+}
+
+.search-box input::placeholder {
+    color: var(--text-muted);
+}
+
+/* Upload Section */
+.upload-container {
+    max-width: 800px;
+    margin: 0 auto;
+}
+
+.upload-zone {
+    border: 2px dashed var(--border-color);
+    border-radius: 12px;
+    padding: 3rem;
+    text-align: center;
+    background: rgba(255, 255, 255, 0.02);
+    transition: var(--transition-normal);
+    margin-bottom: 2rem;
+}
+
+.upload-zone:hover,
+.upload-zone.drag-over {
+    border-color: var(--primary-color);
+    background: rgba(99, 102, 241, 0.05);
+}
+
+.upload-content i {
+    font-size: 3rem;
+    color: var(--primary-color);
+    margin-bottom: 1rem;
+}
+
+.upload-content h3 {
+    font-size: 1.5rem;
+    margin-bottom: 0.5rem;
+    color: var(--text-primary);
+}
+
+.upload-content p {
+    color: var(--text-secondary);
+    margin-bottom: 1.5rem;
+}
+
+.url-input-container {
+    background: rgba(255, 255, 255, 0.05);
+    border-radius: 12px;
+    padding: 2rem;
+    border: 1px solid var(--border-color);
+}
+
+.url-input-container h3 {
+    margin-bottom: 1rem;
+    color: var(--text-primary);
+}
+
+.url-input-box {
+    display: flex;
+    gap: 1rem;
+}
+
+.url-input-box input {
+    flex: 1;
+    padding: 0.75rem;
+    background: rgba(255, 255, 255, 0.05);
+    border: 1px solid var(--border-color);
+    border-radius: 8px;
+    color: var(--text-primary);
+    font-size: 1rem;
+}
+
+.url-input-box input:focus {
+    outline: none;
+    border-color: var(--primary-color);
+    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
+}
+
+/* My Papers Section */
+.mypapers-hero {
+    text-align: center;
+    padding: 3rem 0 2rem;
+}
+
+.mypapers-hero-content {
+    max-width: 800px;
+    margin: 0 auto;
+}
+
+.mypapers-title-area {
+    margin-bottom: 2rem;
+}
+
+.mypapers-icon-large {
+    width: 80px;
+    height: 80px;
+    margin: 0 auto 1.5rem;
+    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
+    border-radius: 20px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-size: 2rem;
+    color: white;
+}
+
+.mypapers-hero h1 {
+    font-size: 2.5rem;
+    font-weight: 700;
+    background: linear-gradient(135deg, var(--text-primary), var(--accent-color));
+    -webkit-background-clip: text;
+    -webkit-text-fill-color: transparent;
+    margin-bottom: 1rem;
+}
+
+.mypapers-hero p {
+    font-size: 1.1rem;
+    color: var(--text-secondary);
+    max-width: 600px;
+    margin: 0 auto;
+}
+
+.mypapers-actions {
+    display: flex;
+    gap: 1rem;
+    justify-content: center;
+    margin-top: 2rem;
+}
+
+.refresh-papers-btn, .clear-all-btn {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+    padding: 0.75rem 1.5rem;
+    border: none;
+    border-radius: 10px;
+    font-size: 0.95rem;
+    font-weight: 500;
+    cursor: pointer;
+    transition: var(--transition-normal);
+}
+
+.refresh-papers-btn {
+    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
+    color: white;
+}
+
+.refresh-papers-btn:hover {
+    transform: translateY(-2px);
+    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
+}
+
+.clear-all-btn {
+    background: rgba(239, 68, 68, 0.1);
+    color: #ef4444;
+    border: 1px solid rgba(239, 68, 68, 0.3);
+}
+
+.clear-all-btn:hover {
+    background: rgba(239, 68, 68, 0.2);
+    transform: translateY(-2px);
+}
+
+.mypapers-content {
+    max-width: 1200px;
+    margin: 0 auto;
+    padding: 0 1rem;
+}
+
+.mypapers-loading {
+    text-align: center;
+    padding: 3rem;
+}
+
+.mypapers-loading .loading-spinner {
+    width: 40px;
+    height: 40px;
+    border: 3px solid rgba(255, 255, 255, 0.1);
+    border-top: 3px solid var(--primary-color);
+    border-radius: 50%;
+    animation: spin 1s linear infinite;
+    margin: 0 auto 1rem;
+}
+
+.mypapers-empty {
+    text-align: center;
+    padding: 4rem 2rem;
+}
+
+.empty-state {
+    max-width: 400px;
+    margin: 0 auto;
+}
+
+.empty-icon {
+    width: 80px;
+    height: 80px;
+    margin: 0 auto 1.5rem;
+    background: rgba(255, 255, 255, 0.05);
+    border-radius: 20px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-size: 2rem;
+    color: var(--text-secondary);
+}
+
+.empty-state h3 {
+    font-size: 1.5rem;
+    color: var(--text-primary);
+    margin-bottom: 0.5rem;
+}
+
+.empty-state p {
+    color: var(--text-secondary);
+    margin-bottom: 2rem;
+}
+
+.empty-actions {
+    display: flex;
+    gap: 1rem;
+    justify-content: center;
+}
+
+.papers-grid {
+    display: grid;
+    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
+    gap: 1.5rem;
+    padding: 2rem 0;
+}
+
+.paper-card-mypapers {
+    background: linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
+    border: 1px solid rgba(255, 255, 255, 0.1);
+    border-radius: 16px;
+    padding: 1.5rem;
+    transition: var(--transition-normal);
+    cursor: pointer;
+    position: relative;
+    overflow: hidden;
+}
+
+.paper-card-mypapers::before {
+    content: '';
+    position: absolute;
+    top: 0;
+    left: 0;
+    right: 0;
+    height: 3px;
+    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
+}
+
+.paper-card-mypapers:hover {
+    transform: translateY(-4px);
+    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
+    border-color: rgba(99, 102, 241, 0.3);
+}
+
+.paper-card-header {
+    display: flex;
+    align-items: flex-start;
+    gap: 1rem;
+    margin-bottom: 1rem;
+}
+
+.paper-card-icon {
+    width: 40px;
+    height: 40px;
+    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
+    border-radius: 10px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-size: 1.2rem;
+    color: white;
+    flex-shrink: 0;
+}
+
+.paper-card-content {
+    flex: 1;
+    min-width: 0;
+}
+
+.paper-card-title {
+    font-size: 1.1rem;
+    font-weight: 600;
+    color: var(--text-primary);
+    margin-bottom: 0.5rem;
+    line-height: 1.4;
+    display: -webkit-box;
+    -webkit-line-clamp: 2;
+    -webkit-box-orient: vertical;
+    overflow: hidden;
+}
+
+.paper-card-meta {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 0.75rem;
+    margin-bottom: 1rem;
+    font-size: 0.85rem;
+    color: var(--text-secondary);
+}
+
+.paper-card-meta span {
+    display: flex;
+    align-items: center;
+    gap: 0.25rem;
+}
+
+.paper-card-actions {
+    display: flex;
+    gap: 0.5rem;
+}
+
+.paper-action-btn {
+    flex: 1;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    gap: 0.5rem;
+    padding: 0.6rem 1rem;
+    border: none;
+    border-radius: 8px;
+    font-size: 0.85rem;
+    font-weight: 500;
+    cursor: pointer;
+    transition: var(--transition-normal);
+}
+
+.paper-action-btn.primary {
+    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
+    color: white;
+}
+
+.paper-action-btn.primary:hover {
+    transform: translateY(-2px);
+    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.3);
+}
+
+.paper-action-btn.secondary {
+    background: rgba(255, 255, 255, 0.05);
+    color: var(--text-primary);
+    border: 1px solid rgba(255, 255, 255, 0.1);
+}
+
+.paper-action-btn.secondary:hover {
+    background: rgba(255, 255, 255, 0.1);
+    transform: translateY(-2px);
+}
+
+.paper-action-btn.danger {
+    background: rgba(239, 68, 68, 0.1);
+    color: #ef4444;
+    border: 1px solid rgba(239, 68, 68, 0.3);
+}
+
+.paper-action-btn.danger:hover {
+    background: rgba(239, 68, 68, 0.2);
+}
+
+/* Chat Section */
+.chat-container {
+    background: linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
+    border: 1px solid rgba(255, 255, 255, 0.1);
+    border-radius: 16px;
+    overflow: hidden;
+    backdrop-filter: blur(10px);
+    display: flex;
+    flex-direction: column;
+    height: 75vh;
+    max-height: 800px;
+}
+
+.chat-header {
+    flex-shrink: 0;
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    padding: 1.5rem 2rem;
+    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
+    background: rgba(255, 255, 255, 0.03);
+}
+
+.chat-title {
+    display: flex;
+    align-items: center;
+    gap: 1rem;
+}
+
+.chat-icon {
+    background: linear-gradient(135deg, #10b981, #06d6a0);
+    padding: 1rem;
+    border-radius: 12px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+
+.chat-icon i {
+    font-size: 1.5rem;
+    color: white;
+}
+
+.chat-title-text h3 {
+    color: #ffffff;
+    font-size: 1.5rem;
+    font-weight: 600;
+    margin: 0 0 0.5rem 0;
+}
+
+.chat-title-text p {
+    color: #8b949e;
+    margin: 0;
+    font-size: 0.95rem;
+}
+
+.chat-status .status-indicator.online .status-dot {
+    background: #10b981;
+}
+
+.chat-messages-container {
+    flex-grow: 1;
+    padding: 2rem;
+    overflow-y: auto;
+    display: flex;
+    flex-direction: column;
+    max-width: 1000px;
+    margin: 0 auto;
+}
+
+/* Custom Scrollbar */
+.chat-messages-container::-webkit-scrollbar {
+    width: 8px;
+}
+
+.chat-messages-container::-webkit-scrollbar-track {
+    background: rgba(0, 0, 0, 0.2);
+    border-radius: 4px;
+}
+
+.chat-messages-container::-webkit-scrollbar-thumb {
+    background: rgba(255, 255, 255, 0.2);
+    border-radius: 4px;
+}
+
+.chat-messages-container::-webkit-scrollbar-thumb:hover {
+    background: rgba(255, 255, 255, 0.3);
+}
+
+.welcome-avatar {
+    position: relative;
+    flex-shrink: 0;
+}
+
+.avatar-icon {
+    background: linear-gradient(135deg, #10b981, #06d6a0);
+    width: 50px;
+    height: 50px;
+    border-radius: 50%;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+
+.avatar-icon i {
+    font-size: 1.5rem;
+    color: white;
+}
+
+.avatar-status {
+    position: absolute;
+    bottom: 2px;
+    right: 2px;
+    width: 14px;
+    height: 14px;
+    background: #10b981;
+    border: 2px solid #0f172a;
+    border-radius: 50%;
+}
+
+.welcome-content h4 {
+    color: #ffffff;
+    font-size: 1.2rem;
+    margin: 0 0 0.75rem 0;
+}
+
+.chat-input-area {
+    flex-shrink: 0;
+    padding: 1rem 2rem 1.5rem;
+    border-top: 1px solid rgba(255, 255, 255, 0.1);
+    background: rgba(0, 0, 0, 0.2);
+}
+
+.quick-questions-chips {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 0.5rem;
+    margin-bottom: 1rem;
+    justify-content: center;
+}
+
+.quick-question-chip {
+    background: rgba(255, 255, 255, 0.1);
+    border: 1px solid rgba(255, 255, 255, 0.2);
+    color: #e6edf3;
+    padding: 0.5rem 1rem;
+    border-radius: 20px;
+    cursor: pointer;
+    font-size: 0.85rem;
+    transition: all 0.2s ease;
+}
+
+.quick-question-chip:hover {
+    background: rgba(124, 58, 237, 0.3);
+    border-color: #7c3aed;
+    color: #fff;
+    transform: translateY(-2px);
+}
+
+.chat-input-container .input-wrapper {
+    display: flex;
+    align-items: center;
+    gap: 0.75rem;
+    background: rgba(0, 0, 0, 0.3);
+    border-radius: 12px;
+    padding: 0.5rem 0.5rem 0.5rem 1rem;
+    border: 1px solid rgba(255, 255, 255, 0.15);
+    transition: all 0.2s ease;
+}
+
+.chat-input-container .input-wrapper:focus-within {
+    border-color: #7c3aed;
+    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.2);
+}
+
+.chat-input-container textarea {
+    flex-grow: 1;
+    background: transparent;
+    border: none;
+    color: #fff;
+    font-size: 1rem;
+    resize: none;
+    padding: 0.5rem 0;
+    max-height: 120px;
+    line-height: 1.5;
+}
+
+.chat-input-container textarea:focus {
+    outline: none;
+}
+
+.chat-input-container .send-btn-panel {
+    flex-shrink: 0;
+    width: 40px;
+    height: 40px;
+    border-radius: 8px;
+    font-size: 1rem;
+}
+
+/* --- Chat Bubble Styles --- */
+.chat-message {
+    display: flex;
+    margin-bottom: 1.5rem;
+    max-width: 80%;
+    animation: messageSlideIn 0.3s ease-out;
+}
+
+@keyframes messageSlideIn {
+    from {
+        opacity: 0;
+        transform: translateY(10px);
+    }
+    to {
+        opacity: 1;
+        transform: translateY(0);
+    }
+}
+
+.message-avatar {
+    width: 40px;
+    height: 40px;
+    border-radius: 50%;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-size: 1.2rem;
+    flex-shrink: 0;
+}
+
+.message-bubble {
+    padding: 0.75rem 1.25rem;
+    border-radius: 18px;
+    position: relative;
+    line-height: 1.6;
+}
+
+.message-content p {
+    margin: 0;
+    white-space: pre-wrap;
+    word-wrap: break-word;
+}
+
+.message-meta {
+    font-size: 0.75rem;
+    color: #8b949e;
+    padding-top: 0.5rem;
+}
+
+/* Assistant Bubble */
+.chat-message.assistant {
+    align-self: flex-start;
+}
+
+.chat-message.assistant .message-avatar {
+    background: linear-gradient(135deg, #10b981, #06d6a0);
+    color: white;
+    margin-right: 1rem;
+}
+
+.chat-message.assistant .message-bubble {
+    background: #1f2937;
+    border: 1px solid #374151;
+    border-top-left-radius: 4px;
+    color: #e6edf3;
+}
+
+/* User Bubble */
+.chat-message.user {
+    align-self: flex-end;
+    flex-direction: row-reverse;
+    margin-left: auto;
+}
+
+.chat-message.user .message-avatar {
+    background: linear-gradient(135deg, #7c3aed, #a855f7);
+    color: white;
+    margin-left: 1rem;
+}
+
+.chat-message.user .message-bubble {
+    background: #4338ca;
+    color: #e0e7ff;
+    border-top-right-radius: 4px;
+}
+
+.chat-message.user .message-meta {
+    text-align: right;
+    color: #c7d2fe;
+}
+
+/* Typing Indicator */
+.typing-indicator {
+    display: flex;
+    align-items: center;
+    margin-bottom: 1.5rem;
+    max-width: 80%;
+    align-self: flex-start;
+}
+
+.typing-indicator .message-bubble {
+    padding: 0.75rem 1.25rem;
+    background: #1f2937;
+    border: 1px solid #374151;
+    border-radius: 18px;
+    border-top-left-radius: 4px;
+}
+
+.typing-dots {
+    display: flex;
+    gap: 0.3rem;
+    align-items: center;
+}
+
+.typing-dots .dot {
+    width: 8px;
+    height: 8px;
+    border-radius: 50%;
+    background-color: #9ca3af;
+    animation: typingAnimation 1.4s infinite ease-in-out both;
+}
+.typing-dots .dot:nth-child(1) { animation-delay: -0.32s; }
+.typing-dots .dot:nth-child(2) { animation-delay: -0.16s; }
+.typing-dots .dot:nth-child(3) { animation-delay: 0s; }
+
+@keyframes typingAnimation {
+    0%, 80%, 100% { transform: scale(0.5); opacity: 0.5; }
+    40% { transform: scale(1.0); opacity: 1; }
+}
+
+.chat-messages-container {
+    display: flex;
+    flex-direction: column;
+}
+
+/* Results Container */
+.results-container {
+    margin-top: 2rem;
+}
+
+.paper-card,
+.result-card {
+    background: rgba(255, 255, 255, 0.05);
+    border: 1px solid var(--border-color);
+    border-radius: 12px;
+    padding: 1.5rem;
+    margin-bottom: 1rem;
+    transition: var(--transition-normal);
+}
+
+.paper-card:hover,
+.result-card:hover {
+    transform: translateY(-2px);
+    box-shadow: var(--shadow-lg);
+    border-color: var(--primary-color);
+}
+
+.paper-title {
+    font-size: 1.25rem;
+    font-weight: 600;
+    margin-bottom: 0.5rem;
+    color: var(--text-primary);
+}
+
+.paper-authors {
+    color: var(--text-secondary);
+    margin-bottom: 0.5rem;
+    font-size: 0.9rem;
+}
+
+.paper-meta {
+    display: flex;
+    gap: 1rem;
+    margin-bottom: 1rem;
+    font-size: 0.85rem;
+    color: var(--text-muted);
+}
+
+.paper-summary {
+    color: var(--text-secondary);
+    line-height: 1.6;
+    margin-bottom: 1rem;
+}
+
+.paper-actions {
+    display: flex;
+    gap: 1rem;
+    flex-wrap: wrap;
+}
+
+.paper-actions .btn-primary,
+.paper-actions .btn-secondary {
+    padding: 0.5rem 1rem;
+    font-size: 0.875rem;
+}
+
+/* Loading Overlay */
+.loading-overlay {
+    position: fixed;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    background: rgba(15, 23, 42, 0.9);
+    display: none;
+    align-items: center;
+    justify-content: center;
+    z-index: 9999;
+    backdrop-filter: blur(5px);
+}
+
+.loading-overlay.active {
+    display: flex;
+}
+
+.loading-content {
+    text-align: center;
+    color: var(--text-primary);
+}
+
+.loading-spinner {
+    width: 50px;
+    height: 50px;
+    border: 3px solid var(--border-color);
+    border-top: 3px solid var(--primary-color);
+    border-radius: 50%;
+    animation: spin 1s linear infinite;
+    margin: 0 auto 1rem;
+}
+
+@keyframes spin {
+    0% { transform: rotate(0deg); }
+    100% { transform: rotate(360deg); }
+}
+
+/* Toast Notifications */
+.toast-container {
+    position: fixed;
+    top: 90px;
+    right: 20px;
+    z-index: 10000;
+}
+
+.toast {
+    background: rgba(255, 255, 255, 0.1);
+    color: var(--text-primary);
+    padding: 1rem 1.5rem;
+    border-radius: 8px;
+    margin-bottom: 0.5rem;
+    border-left: 4px solid var(--primary-color);
+    backdrop-filter: blur(10px);
+    animation: toastSlideIn 0.3s ease-out;
+    max-width: 350px;
+}
+
+.toast.success {
+    border-left-color: var(--success-color);
+}
+
+.toast.error {
+    border-left-color: var(--error-color);
+}
+
+.toast.warning {
+    border-left-color: var(--warning-color);
+}
+
+@keyframes toastSlideIn {
+    from {
+        opacity: 0;
+        transform: translateX(100%);
+    }
+    to {
+        opacity: 1;
+        transform: translateX(0);
+    }
+}
+
+/* Responsive Design */
+@media (max-width: 768px) {
+    .nav-container {
+        padding: 0 1rem;
+    }
+    
+    .nav-links {
+        gap: 1rem;
+    }
+    
+    .nav-link span {
+        display: none;
+    }
+    
+    .main-container {
+        padding: 1rem;
+    }
+    
+    .hero-title {
+        font-size: 2.5rem;
+    }
+    
+    .hero-features {
+        grid-template-columns: 1fr;
+    }
+    
+    .search-box,
+    .url-input-box,
+    .chat-input-box {
+        flex-direction: column;
+    }
+    
+    .upload-zone {
+        padding: 2rem 1rem;
+    }
+    
+    .paper-actions {
+        flex-direction: column;
+    }
+    
+    .message-content {
+        max-width: 85%;
+    }
+}
+
+@media (max-width: 480px) {
+    .hero-title {
+        font-size: 2rem;
+    }
+    
+    .section-header h2 {
+        font-size: 2rem;
+    }
+    
+    .upload-content i {
+        font-size: 2rem;
+    }
+    
+    .upload-content h3 {
+        font-size: 1.25rem;
+    }
+}
+
+/* Custom Scrollbar */
+::-webkit-scrollbar {
+    width: 8px;
+}
+
+::-webkit-scrollbar-track {
+    background: var(--background-light);
+}
+
+::-webkit-scrollbar-thumb {
+    background: var(--surface-color);
+    border-radius: 4px;
+}
+
+::-webkit-scrollbar-thumb:hover {
+    background: var(--primary-color);
+}
+
+/* Selection */
+::selection {
+    background: rgba(99, 102, 241, 0.3);
+    color: var(--text-primary);
+}
+
+/* Focus states */
+*:focus {
+    outline: 2px solid var(--primary-color);
+    outline-offset: 2px;
+}
+
+/* Enhanced Section Headers */
+.section-header {
+    display: flex;
+    align-items: center;
+    gap: 1rem;
+    margin-bottom: 3rem;
+    padding-bottom: 1rem;
+    border-bottom: 1px solid var(--border-color);
+}
+
+.section-icon {
+    width: 60px;
+    height: 60px;
+    border-radius: 16px;
+    background: var(--gradient-primary);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
+}
+
+.section-icon i {
+    color: white;
+    font-size: 1.5rem;
+}
+
+.section-title {
+    flex: 1;
+}
+
+.section-title h2 {
+    font-size: 2rem;
+    font-weight: 700;
+    margin-bottom: 0.5rem;
+    color: var(--text-primary);
+}
+
+.section-title p {
+    color: var(--text-secondary);
+    font-size: 1rem;
+}
+
+/* Enhanced Search Page */
+.search-hero {
+    padding: 2rem 0 4rem;
+    text-align: center;
+}
+
+.search-hero-content {
+    max-width: 1000px;
+    margin: 0 auto;
+    padding: 0 2rem;
+}
+
+.search-title-area {
+    margin-bottom: 3rem;
+}
+
+.search-icon-large {
+    width: 80px;
+    height: 80px;
+    border-radius: 20px;
+    background: var(--gradient-primary);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    margin: 0 auto 2rem;
+    box-shadow: 0 12px 40px rgba(99, 102, 241, 0.3);
+    animation: float 6s ease-in-out infinite;
+}
+
+.search-icon-large i {
+    font-size: 2.5rem;
+    color: white;
+}
+
+.search-title-area h1 {
+    font-size: 3rem;
+    font-weight: 700;
+    margin-bottom: 1rem;
+    background: var(--gradient-primary);
+    -webkit-background-clip: text;
+    -webkit-text-fill-color: transparent;
+    background-clip: text;
+}
+
+.search-title-area p {
+    font-size: 1.25rem;
+    color: var(--text-secondary);
+    max-width: 600px;
+    margin: 0 auto;
+    line-height: 1.6;
+}
+
+/* Enhanced Search Box */
+.search-box-enhanced {
+    margin-bottom: 4rem;
+}
+
+.search-input-container {
+    display: flex;
+    align-items: center;
+    gap: 1rem;
+    margin-bottom: 1rem;
+}
+
+.search-input-wrapper {
+    flex: 1;
+    position: relative;
+    background: rgba(255, 255, 255, 0.05);
+    border: 2px solid var(--border-color);
+    border-radius: 20px;
+    padding: 0.75rem 1.5rem;
+    display: flex;
+    align-items: center;
+    gap: 1rem;
+    transition: var(--transition-normal);
+    backdrop-filter: blur(10px);
+}
+
+.search-input-wrapper:focus-within {
+    border-color: var(--primary-color);
+    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
+    background: rgba(255, 255, 255, 0.08);
+}
+
+.search-icon {
+    color: var(--text-muted);
+    font-size: 1.25rem;
+    transition: var(--transition-fast);
+}
+
+.search-input-wrapper:focus-within .search-icon {
+    color: var(--primary-color);
+}
+
+.search-input-wrapper input {
+    flex: 1;
+    padding: 0.75rem 0;
+    background: transparent;
+    border: none;
+    color: var(--text-primary);
+    font-size: 1.125rem;
+    font-weight: 500;
+}
+
+.search-input-wrapper input:focus {
+    outline: none;
+}
+
+.search-input-wrapper input::placeholder {
+    color: var(--text-muted);
+    font-weight: 400;
+}
+
+.search-submit-btn {
+    padding: 0.75rem 1.5rem;
+    border-radius: 16px;
+    border: none;
+    background: var(--gradient-primary);
+    color: white;
+    cursor: pointer;
+    transition: var(--transition-fast);
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+    font-weight: 600;
+    font-size: 1rem;
+}
+
+.search-submit-btn:hover {
+    transform: translateY(-2px);
+    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
+}
+
+.search-actions {
+    display: flex;
+    gap: 0.5rem;
+}
+
+.voice-search-btn,
+.advanced-search-btn {
+    width: 48px;
+    height: 48px;
+    border-radius: 12px;
+    border: 1px solid var(--border-color);
+    background: rgba(255, 255, 255, 0.05);
+    color: var(--text-secondary);
+    cursor: pointer;
+    transition: var(--transition-fast);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    position: relative;
+    overflow: hidden;
+}
+
+.voice-search-btn:hover,
+.advanced-search-btn:hover {
+    background: rgba(255, 255, 255, 0.1);
+    color: var(--primary-color);
+    border-color: var(--primary-color);
+    transform: translateY(-1px);
+    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
+}
+
+.advanced-search-btn.active {
+    background: var(--primary-color);
+    color: white;
+    border-color: var(--primary-color);
+}
+
+.advanced-search-btn.active:hover {
+    background: var(--primary-dark);
+}
+
+/* Advanced Filters */
+.advanced-filters {
+    background: rgba(255, 255, 255, 0.02);
+    border: 1px solid var(--border-color);
+    border-radius: 16px;
+    padding: 1.5rem;
+    margin-top: 1rem;
+    display: none;
+    animation: slideDown 0.3s ease-out;
+    backdrop-filter: blur(10px);
+    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
+}
+
+.advanced-filters.show {
+    display: block;
+}
+
+.filters-row {
+    display: grid;
+    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
+    gap: 1.5rem;
+    align-items: end;
+}
+
+@media (max-width: 768px) {
+    .filters-row {
+        grid-template-columns: 1fr;
+        gap: 1rem;
+    }
+}
+
+.filter-group {
+    display: flex;
+    flex-direction: column;
+    gap: 0.5rem;
+}
+
+.filter-label {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+    font-size: 0.875rem;
+    font-weight: 600;
+    color: var(--text-primary);
+    margin-bottom: 0.5rem;
+    text-transform: uppercase;
+    letter-spacing: 0.5px;
+}
+
+.filter-label i {
+    color: var(--primary-color);
+    font-size: 1rem;
+}
+
+.filter-select {
+    padding: 0.75rem;
+    background: var(--background-dark);
+    border: 1px solid var(--border-color);
+    border-radius: 8px;
+    color: var(--text-primary);
+    font-size: 0.9rem;
+    cursor: pointer;
+    transition: var(--transition-fast);
+    appearance: none;
+    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
+    background-position: right 0.5rem center;
+    background-repeat: no-repeat;
+    background-size: 1.5em 1.5em;
+    padding-right: 2.5rem;
+}
+
+.filter-select:hover {
+    background: rgba(255, 255, 255, 0.05);
+    border-color: var(--primary-color);
+}
+
+.filter-select:focus {
+    outline: none;
+    border-color: var(--primary-color);
+    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
+    background: rgba(255, 255, 255, 0.08);
+}
+
+.filter-select option {
+    background: var(--background-dark);
+    color: var(--text-primary);
+    padding: 0.5rem;
+    border: none;
+}
+
+.filter-select option:hover,
+.filter-select option:checked {
+    background: var(--primary-color);
+    color: white;
+}
+
+/* Quick Search Categories */
+.quick-search-section {
+    margin-bottom: 3rem;
+}
+
+.quick-search-section h3 {
+    font-size: 1.5rem;
+    font-weight: 600;
+    margin-bottom: 2rem;
+    color: var(--text-primary);
+    text-align: center;
+}
+
+.quick-search-grid {
+    display: grid;
+    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
+    gap: 1.5rem;
+}
+
+.quick-search-card {
+    display: flex;
+    align-items: center;
+    gap: 1rem;
+    padding: 1.5rem;
+    background: rgba(255, 255, 255, 0.05);
+    border: 1px solid var(--border-color);
+    border-radius: 16px;
+    cursor: pointer;
+    transition: var(--transition-normal);
+    text-align: left;
+    backdrop-filter: blur(10px);
+}
+
+.quick-search-card:hover {
+    transform: translateY(-4px);
+    background: rgba(255, 255, 255, 0.08);
+    border-color: var(--primary-color);
+    box-shadow: 0 12px 40px rgba(99, 102, 241, 0.2);
+}
+
+.quick-search-card .card-icon {
+    width: 48px;
+    height: 48px;
+    border-radius: 12px;
+    background: var(--gradient-primary);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    flex-shrink: 0;
+}
+
+.quick-search-card .card-icon i {
+    font-size: 1.5rem;
+    color: white;
+}
+
+.quick-search-card .card-content h4 {
+    font-size: 1.125rem;
+    font-weight: 600;
+    margin-bottom: 0.25rem;
+    color: var(--text-primary);
+}
+
+.quick-search-card .card-content span {
+    font-size: 0.875rem;
+    color: var(--text-muted);
+}
+
+/* Search Tips */
+.search-tips {
+    background: rgba(255, 255, 255, 0.02);
+    border: 1px solid var(--border-color);
+    border-radius: 16px;
+    margin-bottom: 3rem;
+    overflow: hidden;
+}
+
+.tips-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    padding: 1.5rem;
+    background: rgba(255, 255, 255, 0.05);
+    cursor: pointer;
+}
+
+.tips-header h3 {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+    margin: 0;
+    color: var(--text-primary);
+    font-size: 1.125rem;
+}
+
+.tips-header i {
+    color: var(--accent-color);
+}
+
+.tips-toggle {
+    background: none;
+    border: none;
+    color: var(--text-secondary);
+    cursor: pointer;
+    transition: var(--transition-fast);
+}
+
+.tips-toggle:hover {
+    color: var(--primary-color);
+}
+
+.tips-content {
+    padding: 0 1.5rem 1.5rem;
+    display: none;
+}
+
+.tips-content.show {
+    display: block;
+    animation: slideDown 0.3s ease-out;
+}
+
+.tips-grid {
+    display: grid;
+    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
+    gap: 1.5rem;
+}
+
+.tip-item {
+    display: flex;
+    gap: 1rem;
+    padding: 1rem;
+    background: rgba(255, 255, 255, 0.05);
+    border-radius: 12px;
+}
+
+.tip-icon {
+    width: 40px;
+    height: 40px;
+    border-radius: 10px;
+    background: var(--gradient-secondary);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    flex-shrink: 0;
+}
+
+.tip-icon i {
+    font-size: 1rem;
+    color: white;
+}
+
+.tip-content h4 {
+    font-size: 1rem;
+    font-weight: 600;
+    margin-bottom: 0.5rem;
+    color: var(--text-primary);
+}
+
+.tip-content p {
+    font-size: 0.875rem;
+    color: var(--text-secondary);
+    line-height: 1.5;
+}
+
+.tip-content code {
+    background: rgba(99, 102, 241, 0.1);
+    padding: 0.2rem 0.4rem;
+    border-radius: 4px;
+    font-size: 0.8rem;
+    color: var(--primary-light);
+}
+
+/* Recent Searches */
+.recent-searches {
+    background: rgba(255, 255, 255, 0.02);
+    border: 1px solid var(--border-color);
+    border-radius: 16px;
+    padding: 1.5rem;
+    margin-bottom: 3rem;
+}
+
+.recent-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    margin-bottom: 1rem;
+}
+
+.recent-header h3 {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+    margin: 0;
+    color: var(--text-primary);
+    font-size: 1.125rem;
+}
+
+.clear-history {
+    background: none;
+    border: 1px solid var(--border-color);
+    border-radius: 8px;
+    padding: 0.5rem 0.75rem;
+    color: var(--text-secondary);
+    cursor: pointer;
+    transition: var(--transition-fast);
+    font-size: 0.875rem;
+}
+
+.clear-history:hover {
+    border-color: var(--error-color);
+    color: var(--error-color);
+}
+
+/* Enhanced Placeholder */
+.search-placeholder-enhanced {
+    text-align: center;
+    padding: 4rem 2rem;
+}
+
+.placeholder-animation {
+    margin-bottom: 2rem;
+}
+
+.floating-papers {
+    display: flex;
+    justify-content: center;
+    gap: 2rem;
+    margin-bottom: 2rem;
+}
+
+.paper-icon {
+    font-size: 3rem;
+    animation: floatPaper 3s ease-in-out infinite;
+    opacity: 0.7;
+}
+
+.paper-icon:nth-child(1) { animation-delay: 0s; }
+.paper-icon:nth-child(2) { animation-delay: 1s; }
+.paper-icon:nth-child(3) { animation-delay: 2s; }
+
+@keyframes floatPaper {
+    0%, 100% { transform: translateY(0px); }
+    50% { transform: translateY(-10px); }
+}
+
+.search-placeholder-enhanced h3 {
+    font-size: 1.75rem;
+    font-weight: 600;
+    margin-bottom: 1rem;
+    color: var(--text-primary);
+}
+
+.search-placeholder-enhanced p {
+    font-size: 1.125rem;
+    color: var(--text-secondary);
+    margin-bottom: 2rem;
+    max-width: 500px;
+    margin-left: auto;
+    margin-right: auto;
+}
+
+.placeholder-stats {
+    display: flex;
+    justify-content: center;
+    gap: 3rem;
+    margin-top: 3rem;
+}
+
+.placeholder-stats .stat {
+    text-align: center;
+}
+
+.placeholder-stats .stat strong {
+    display: block;
+    font-size: 1.5rem;
+    font-weight: 700;
+    color: var(--primary-color);
+    margin-bottom: 0.25rem;
+}
+
+.placeholder-stats .stat span {
+    font-size: 0.875rem;
+    color: var(--text-muted);
+    text-transform: uppercase;
+    letter-spacing: 0.5px;
+}
+
+/* Enhanced Search Suggestions */
+.search-suggestions-dropdown {
+    position: absolute;
+    top: 100%;
+    left: 0;
+    right: 0;
+    background: var(--background-light);
+    border: 1px solid var(--border-color);
+    border-radius: 16px;
+    margin-top: 0.5rem;
+    padding: 1rem;
+    z-index: 100;
+    box-shadow: var(--shadow-xl);
+    backdrop-filter: blur(20px);
+    display: none;
+}
+
+.search-suggestions-dropdown.show {
+    display: block;
+    animation: slideDown 0.3s ease-out;
+}
+
+.suggestions-section {
+    margin-bottom: 1rem;
+}
+
+.suggestions-section:last-child {
+    margin-bottom: 0;
+}
+
+.suggestions-section h4 {
+    font-size: 0.875rem;
+    font-weight: 600;
+    color: var(--text-muted);
+    margin-bottom: 0.75rem;
+    text-transform: uppercase;
+    letter-spacing: 0.5px;
+}
+
+.suggestion-item {
+    display: flex;
+    align-items: center;
+    gap: 0.75rem;
+    padding: 0.75rem;
+    cursor: pointer;
+    transition: var(--transition-fast);
+    border-radius: 8px;
+    margin-bottom: 0.25rem;
+}
+
+.suggestion-item:hover {
+    background: rgba(99, 102, 241, 0.1);
+    color: var(--text-primary);
+}
+
+.suggestion-item i {
+    color: var(--text-muted);
+    width: 16px;
+    text-align: center;
+}
+
+.suggestion-item.trending i {
+    color: var(--warning-color);
+}
+
+.suggestion-item span {
+    flex: 1;
+    color: var(--text-secondary);
+    font-weight: 500;
+}
+
+.suggestion-item small {
+    color: var(--text-muted);
+    font-size: 0.75rem;
+}
+
+.trending-badge {
+    background: var(--warning-color);
+    color: var(--text-inverse);
+    padding: 0.15rem 0.5rem;
+    border-radius: 10px;
+    font-size: 0.7rem;
+    font-weight: 600;
+}
+
+/* Animations */
+@keyframes slideDown {
+    from {
+        opacity: 0;
+        transform: translateY(-10px);
+    }
+    to {
+        opacity: 1;
+        transform: translateY(0);
+    }
+}
+
+/* Page System */
+.page {
+    display: none;
+    min-height: 100vh;
+}
+
+.page.active {
+    display: block;
+}
+
+/* Landing Page Styles */
+.landing-nav {
+    background: rgba(15, 23, 42, 0.98);
+    backdrop-filter: blur(20px);
+}
+
+.landing-nav-links {
+    display: flex;
+    align-items: center;
+    gap: 2rem;
+}
+
+.nav-cta-btn {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+    padding: 0.75rem 1.5rem;
+    background: var(--gradient-primary);
+    border: none;
+    border-radius: 12px;
+    color: white;
+    font-weight: 600;
+    cursor: pointer;
+    transition: var(--transition-normal);
+    text-decoration: none;
+}
+
+.nav-cta-btn:hover {
+    transform: translateY(-2px);
+    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
+}
+
+/* Features Section */
+.features-section {
+    padding: 6rem 0;
+    background: rgba(255, 255, 255, 0.02);
+    border-top: 1px solid var(--border-color);
+}
+
+.features-container {
+    max-width: 1200px;
+    margin: 0 auto;
+    padding: 0 2rem;
+}
+
+.features-header {
+    text-align: center;
+    margin-bottom: 4rem;
+}
+
+.features-header h2 {
+    font-size: 2.5rem;
+    font-weight: 700;
+    margin-bottom: 1rem;
+    color: var(--text-primary);
+}
+
+.features-header p {
+    font-size: 1.25rem;
+    color: var(--text-secondary);
+    max-width: 600px;
+    margin: 0 auto;
+}
+
+.features-grid {
+    display: grid;
+    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
+    gap: 2rem;
+}
+
+.feature-card {
+    padding: 2rem;
+    background: rgba(255, 255, 255, 0.05);
+    border: 1px solid var(--border-color);
+    border-radius: 16px;
+    text-align: center;
+    transition: var(--transition-normal);
+    backdrop-filter: blur(10px);
+}
+
+.feature-card:hover {
+    transform: translateY(-8px);
+    border-color: var(--primary-color);
+    background: rgba(255, 255, 255, 0.08);
+    box-shadow: 0 12px 40px rgba(99, 102, 241, 0.2);
+}
+
+.card-icon {
+    width: 72px;
+    height: 72px;
+    border-radius: 16px;
+    background: var(--gradient-primary);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    margin: 0 auto 1.5rem;
+    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
+}
+
+.card-icon i {
+    font-size: 2rem;
+    color: white;
+}
+
+.feature-card h3 {
+    font-size: 1.5rem;
+    font-weight: 600;
+    margin-bottom: 1rem;
+    color: var(--text-primary);
+}
+
+.feature-card p {
+    color: var(--text-secondary);
+    line-height: 1.6;
+    font-size: 1rem;
+}
+
+/* About Section */
+.about-section {
+    padding: 6rem 0;
+    background: rgba(255, 255, 255, 0.01);
+}
+
+.about-container {
+    max-width: 800px;
+    margin: 0 auto;
+    padding: 0 2rem;
+    text-align: center;
+}
+
+.about-content h2 {
+    font-size: 2.5rem;
+    font-weight: 700;
+    margin-bottom: 2rem;
+    color: var(--text-primary);
+}
+
+.about-content p {
+    font-size: 1.125rem;
+    color: var(--text-secondary);
+    line-height: 1.8;
+    margin-bottom: 3rem;
+}
+
+.about-stats {
+    display: grid;
+    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
+    gap: 2rem;
+    margin-top: 3rem;
+}
+
+.stat-item {
+    text-align: center;
+}
+
+.stat-number {
+    font-size: 2.5rem;
+    font-weight: 700;
+    background: var(--gradient-primary);
+    -webkit-background-clip: text;
+    -webkit-text-fill-color: transparent;
+    background-clip: text;
+    margin-bottom: 0.5rem;
+}
+
+.stat-label {
+    color: var(--text-secondary);
+    font-size: 1rem;
+    font-weight: 500;
+}
+
+/* Footer */
+.landing-footer {
+    background: var(--background-light);
+    border-top: 1px solid var(--border-color);
+    padding: 3rem 0;
+}
+
+.footer-container {
+    max-width: 1200px;
+    margin: 0 auto;
+    padding: 0 2rem;
+}
+
+.footer-content {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    gap: 1rem;
+    text-align: center;
+}
+
+.footer-brand {
+    display: flex;
+    align-items: center;
+    gap: 0.75rem;
+}
+
+.footer-brand .brand-icon {
+    width: 32px;
+    height: 32px;
+}
+
+.footer-brand .brand-name {
+    font-size: 1.25rem;
+    font-weight: 700;
+    color: var(--text-primary);
+}
+
+.footer-content p {
+    color: var(--text-muted);
+    font-size: 0.9rem;
+}
+
+/* App Page Styles */
+.app-nav {
+    background: rgba(15, 23, 42, 0.95);
+}
+
+.back-to-landing {
+    width: 44px;
+    height: 44px;
+    border-radius: 12px;
+    border: 1px solid var(--border-color);
+    background: rgba(255, 255, 255, 0.05);
+    color: var(--text-secondary);
+    cursor: pointer;
+    transition: var(--transition-fast);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+
+.back-to-landing:hover {
+    background: rgba(255, 255, 255, 0.1);
+    color: var(--text-primary);
+    border-color: var(--primary-color);
+    transform: translateY(-1px);
+}
+
+/* Smooth scrolling for landing page */
+html {
+    scroll-behavior: smooth;
+}
+
+/* Page transitions */
+.page {
+    opacity: 0;
+    transition: opacity 0.5s ease-in-out;
+}
+
+.page.active {
+    opacity: 1;
+}
+
+/* Mobile responsive updates */
+@media (max-width: 768px) {
+    .landing-nav-links {
+        gap: 1rem;
+    }
+    
+    .nav-cta-btn {
+        padding: 0.5rem 1rem;
+        font-size: 0.875rem;
+    }
+    
+    .features-header h2,
+    .about-content h2 {
+        font-size: 2rem;
+    }
+    
+    .features-grid {
+        grid-template-columns: 1fr;
+        gap: 1.5rem;
+    }
+    
+    .feature-card {
+        padding: 1.5rem;
+    }
+    
+    .about-stats {
+        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
+        gap: 1.5rem;
+    }
+    
+    .stat-number {
+        font-size: 2rem;
+    }
+}
+
+@media (max-width: 480px) {
+    .landing-nav-links .nav-link span,
+    .nav-cta-btn span {
+        display: none;
+    }
+    
+    .features-section,
+    .about-section {
+        padding: 4rem 0;
+    }
+    
+    .features-header h2,
+    .about-content h2 {
+        font-size: 1.75rem;
+    }
+    
+    .hero-cta {
+        flex-direction: column;
+        align-items: center;
+    }
+    
+    .cta-button {
+        min-width: 200px;
+    }
+}
+
+/* Enhanced Upload Page */
+.upload-hero {
+    padding: 2rem 0 4rem;
+    text-align: center;
+}
+
+.upload-hero-content {
+    max-width: 1000px;
+    margin: 0 auto;
+    padding: 0 2rem;
+}
+
+.upload-title-area {
+    margin-bottom: 3rem;
+}
+
+.upload-icon-large {
+    width: 80px;
+    height: 80px;
+    border-radius: 20px;
+    background: var(--gradient-secondary);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    margin: 0 auto 2rem;
+    box-shadow: 0 12px 40px rgba(6, 182, 212, 0.3);
+    animation: float 6s ease-in-out infinite;
+}
+
+.upload-icon-large i {
+    font-size: 2.5rem;
+    color: white;
+}
+
+.upload-title-area h1 {
+    font-size: 3rem;
+    font-weight: 700;
+    margin-bottom: 1rem;
+    background: var(--gradient-secondary);
+    -webkit-background-clip: text;
+    -webkit-text-fill-color: transparent;
+    background-clip: text;
+}
+
+.upload-title-area p {
+    font-size: 1.25rem;
+    color: var(--text-secondary);
+    max-width: 600px;
+    margin: 0 auto;
+    line-height: 1.6;
+}
+
+/* Enhanced Upload Methods */
+.upload-methods-enhanced {
+    display: grid;
+    grid-template-columns: 1fr 1fr;
+    gap: 2rem;
+    margin-bottom: 3rem;
+}
+
+@media (max-width: 768px) {
+    .upload-methods-enhanced {
+        grid-template-columns: 1fr;
+        gap: 1.5rem;
+    }
+}
+
+.upload-method-card {
+    background: rgba(255, 255, 255, 0.02);
+    border: 1px solid var(--border-color);
+    border-radius: 20px;
+    padding: 2rem;
+    transition: var(--transition-normal);
+    backdrop-filter: blur(10px);
+    position: relative;
+    overflow: hidden;
+}
+
+.upload-method-card:hover {
+    transform: translateY(-4px);
+    border-color: var(--primary-color);
+    box-shadow: 0 12px 40px rgba(99, 102, 241, 0.15);
+}
+
+.primary-upload:hover {
+    border-color: var(--accent-color);
+    box-shadow: 0 12px 40px rgba(6, 182, 212, 0.15);
+}
+
+.upload-card-header {
+    display: flex;
+    align-items: center;
+    gap: 1rem;
+    margin-bottom: 2rem;
+}
+
+.upload-card-icon {
+    width: 48px;
+    height: 48px;
+    border-radius: 12px;
+    background: var(--gradient-primary);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    flex-shrink: 0;
+}
+
+.secondary-upload .upload-card-icon {
+    background: var(--gradient-secondary);
+}
+
+.upload-card-icon i {
+    font-size: 1.5rem;
+    color: white;
+}
+
+.upload-card-title h3 {
+    font-size: 1.25rem;
+    font-weight: 600;
+    margin-bottom: 0.25rem;
+    color: var(--text-primary);
+}
+
+.upload-card-title p {
+    font-size: 0.875rem;
+    color: var(--text-muted);
+    margin: 0;
+}
+
+/* Upload Drop Zone */
+.upload-drop-zone {
+    border: 2px dashed var(--border-color);
+    border-radius: 16px;
+    padding: 2rem;
+    text-align: center;
+    transition: var(--transition-normal);
+    cursor: pointer;
+    margin-bottom: 1.5rem;
+    background: rgba(255, 255, 255, 0.02);
+}
+
+.upload-drop-zone:hover,
+.upload-drop-zone.drag-over {
+    border-color: var(--accent-color);
+    background: rgba(6, 182, 212, 0.05);
+    transform: scale(1.02);
+}
+
+.drop-zone-content {
+    pointer-events: none;
+}
+
+.upload-animation {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    gap: 1rem;
+    margin-bottom: 1.5rem;
+}
+
+.upload-cloud {
+    font-size: 3rem;
+    color: var(--accent-color);
+    animation: float 3s ease-in-out infinite;
+}
+
+.upload-arrow {
+    font-size: 2rem;
+    color: var(--text-muted);
+    animation: bounce 2s ease-in-out infinite;
+}
+
+@keyframes bounce {
+    0%, 100% { transform: translateY(0); }
+    50% { transform: translateY(-10px); }
+}
+
+.drop-zone-content h4 {
+    font-size: 1.25rem;
+    font-weight: 600;
+    margin-bottom: 0.5rem;
+    color: var(--text-primary);
+}
+
+.drop-zone-content p {
+    color: var(--text-secondary);
+    margin-bottom: 1.5rem;
+}
+
+.supported-formats {
+    display: flex;
+    justify-content: center;
+    gap: 1rem;
+    margin-bottom: 1.5rem;
+}
+
+.format-badge {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+    padding: 0.5rem 0.75rem;
+    border-radius: 8px;
+    font-size: 0.875rem;
+    font-weight: 500;
+}
+
+.format-badge.pdf {
+    background: rgba(220, 53, 69, 0.1);
+    color: #dc3545;
+    border: 1px solid rgba(220, 53, 69, 0.2);
+}
+
+.format-badge.docx {
+    background: rgba(0, 123, 255, 0.1);
+    color: #007bff;
+    border: 1px solid rgba(0, 123, 255, 0.2);
+}
+
+.format-badge.txt {
+    background: rgba(108, 117, 125, 0.1);
+    color: #6c757d;
+    border: 1px solid rgba(108, 117, 125, 0.2);
+}
+
+.upload-specs {
+    display: flex;
+    justify-content: center;
+    gap: 2rem;
+    font-size: 0.875rem;
+    color: var(--text-muted);
+}
+
+.upload-specs span {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+}
+
+.upload-actions {
+    text-align: center;
+}
+
+.browse-btn {
+    padding: 0.75rem 2rem;
+    background: var(--gradient-secondary);
+    border: none;
+    border-radius: 12px;
+    color: white;
+    font-weight: 600;
+    cursor: pointer;
+    transition: var(--transition-normal);
+    display: inline-flex;
+    align-items: center;
+    gap: 0.5rem;
+}
+
+.browse-btn:hover {
+    transform: translateY(-2px);
+    box-shadow: 0 8px 25px rgba(6, 182, 212, 0.4);
+}
+
+/* Enhanced URL Input */
+.url-input-enhanced {
+    margin-bottom: 2rem;
+}
+
+.url-input-wrapper {
+    display: flex;
+    align-items: center;
+    background: rgba(255, 255, 255, 0.05);
+    border: 2px solid var(--border-color);
+    border-radius: 16px;
+    padding: 0.75rem;
+    gap: 1rem;
+    transition: var(--transition-normal);
+}
+
+.url-input-wrapper:focus-within {
+    border-color: var(--accent-color);
+    box-shadow: 0 0 0 4px rgba(6, 182, 212, 0.1);
+}
+
+.url-icon {
+    color: var(--text-muted);
+    font-size: 1.125rem;
+}
+
+.url-input-wrapper input {
+    flex: 1;
+    background: transparent;
+    border: none;
+    color: var(--text-primary);
+    font-size: 1rem;
+    padding: 0.5rem 0;
+}
+
+.url-input-wrapper input:focus {
+    outline: none;
+}
+
+.url-input-wrapper .analyze-btn {
+    padding: 0.5rem 1rem;
+    background: var(--gradient-secondary);
+    border: none;
+    border-radius: 8px;
+    color: white;
+    font-weight: 600;
+    cursor: pointer;
+    transition: var(--transition-fast);
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+}
+
+.url-input-wrapper .analyze-btn:hover {
+    transform: scale(1.05);
+    box-shadow: 0 4px 12px rgba(6, 182, 212, 0.4);
+}
+
+/* URL Suggestions */
+.url-suggestions {
+    margin-bottom: 1.5rem;
+}
+
+.url-suggestions h4 {
+    font-size: 0.875rem;
+    font-weight: 600;
+    color: var(--text-secondary);
+    margin-bottom: 0.75rem;
+    text-transform: uppercase;
+    letter-spacing: 0.5px;
+}
+
+.source-buttons {
+    display: grid;
+    grid-template-columns: repeat(2, 1fr);
+    gap: 0.5rem;
+}
+
+.source-btn {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+    padding: 0.5rem 0.75rem;
+    background: rgba(255, 255, 255, 0.05);
+    border: 1px solid var(--border-color);
+    border-radius: 8px;
+    color: var(--text-secondary);
+    cursor: pointer;
+    transition: var(--transition-fast);
+    font-size: 0.875rem;
+}
+
+.source-btn:hover {
+    background: rgba(255, 255, 255, 0.1);
+    border-color: var(--accent-color);
+    color: var(--text-primary);
+}
+
+/* Example URLs */
+.url-examples-details {
+    border: 1px solid var(--border-color);
+    border-radius: 8px;
+    overflow: hidden;
+}
+
+.url-examples-details summary {
+    padding: 0.75rem;
+    background: rgba(255, 255, 255, 0.05);
+    cursor: pointer;
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+    font-weight: 500;
+    color: var(--text-secondary);
+    transition: var(--transition-fast);
+}
+
+.url-examples-details summary:hover {
+    background: rgba(255, 255, 255, 0.1);
+    color: var(--text-primary);
+}
+
+.example-list {
+    padding: 0.5rem;
+}
+
+.example-url {
+    display: flex;
+    align-items: center;
+    gap: 0.75rem;
+    width: 100%;
+    padding: 0.75rem;
+    background: transparent;
+    border: 1px solid transparent;
+    border-radius: 8px;
+    text-align: left;
+    cursor: pointer;
+    transition: var(--transition-fast);
+    margin-bottom: 0.25rem;
+}
+
+.example-url:hover {
+    background: rgba(255, 255, 255, 0.05);
+    border-color: var(--border-color);
+}
+
+.example-url i {
+    color: var(--text-muted);
+    flex-shrink: 0;
+}
+
+.example-url span {
+    flex: 1;
+    color: var(--text-secondary);
+    font-size: 0.875rem;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+}
+
+.example-url small {
+    color: var(--text-muted);
+    font-size: 0.75rem;
+}
+
+/* Upload Tips */
+.upload-tips {
+    background: rgba(255, 255, 255, 0.02);
+    border: 1px solid var(--border-color);
+    border-radius: 16px;
+    overflow: hidden;
+}
+
+.upload-tips .tips-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    padding: 1.5rem;
+    background: rgba(255, 255, 255, 0.05);
+    cursor: pointer;
+}
+
+.upload-tips .tips-content {
+    padding: 0 1.5rem 1.5rem;
+    display: none;
+}
+
+.upload-tips .tips-content.show {
+    display: block;
+    animation: slideDown 0.3s ease-out;
+}
+
+/* Enhanced Upload Progress */
+.upload-progress-enhanced {
+    background: rgba(255, 255, 255, 0.02);
+    border: 1px solid var(--border-color);
+    border-radius: 20px;
+    padding: 2rem;
+    margin-bottom: 2rem;
+    backdrop-filter: blur(10px);
+}
+
+.progress-container {
+    max-width: 800px;
+    margin: 0 auto;
+}
+
+.progress-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: flex-start;
+    margin-bottom: 2rem;
+}
+
+.progress-title h3 {
+    font-size: 1.5rem;
+    font-weight: 600;
+    margin-bottom: 0.5rem;
+    color: var(--text-primary);
+}
+
+.progress-title p {
+    color: var(--text-secondary);
+    margin: 0;
+}
+
+.progress-stats {
+    text-align: right;
+}
+
+.progress-percentage {
+    display: block;
+    font-size: 2rem;
+    font-weight: 700;
+    color: var(--accent-color);
+    margin-bottom: 0.25rem;
+}
+
+.progress-time {
+    font-size: 0.875rem;
+    color: var(--text-muted);
+}
+
+.progress-bar-container {
+    margin-bottom: 2rem;
+}
+
+.progress-bar {
+    height: 12px;
+    background: rgba(255, 255, 255, 0.1);
+    border-radius: 6px;
+    overflow: hidden;
+    position: relative;
+}
+
+.progress-fill {
+    height: 100%;
+    background: var(--gradient-secondary);
+    width: 0%;
+    transition: width 0.5s ease;
+    position: relative;
+}
+
+.progress-glow {
+    position: absolute;
+    top: 0;
+    right: 0;
+    width: 20px;
+    height: 100%;
+    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4));
+    animation: glow 2s ease-in-out infinite;
+}
+
+@keyframes glow {
+    0%, 100% { opacity: 0; }
+    50% { opacity: 1; }
+}
+
+.progress-steps-enhanced {
+    display: grid;
+    grid-template-columns: repeat(4, 1fr);
+    gap: 1rem;
+}
+
+@media (max-width: 768px) {
+    .progress-steps-enhanced {
+        grid-template-columns: repeat(2, 1fr);
+        gap: 1.5rem;
+    }
+}
+
+.progress-step {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    text-align: center;
+    opacity: 0.4;
+    transition: var(--transition-normal);
+}
+
+.progress-step.active {
+    opacity: 1;
+}
+
+.step-icon {
+    width: 48px;
+    height: 48px;
+    border-radius: 50%;
+    background: rgba(255, 255, 255, 0.1);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    margin-bottom: 0.75rem;
+    transition: var(--transition-normal);
+}
+
+.progress-step.active .step-icon {
+    background: var(--gradient-secondary);
+    box-shadow: 0 4px 12px rgba(6, 182, 212, 0.4);
+}
+
+.step-icon i {
+    font-size: 1.25rem;
+    color: var(--text-muted);
+}
+
+.progress-step.active .step-icon i {
+    color: white;
+}
+
+.step-content h4 {
+    font-size: 0.875rem;
+    font-weight: 600;
+    margin-bottom: 0.25rem;
+    color: var(--text-secondary);
+}
+
+.progress-step.active .step-content h4 {
+    color: var(--text-primary);
+}
+
+.step-content p {
+    font-size: 0.75rem;
+    color: var(--text-muted);
+    margin: 0;
+}
+
+/* Enhanced Upload Placeholder */
+.upload-placeholder-enhanced {
+    text-align: center;
+    padding: 4rem 2rem;
+}
+
+.floating-documents {
+    display: flex;
+    justify-content: center;
+    gap: 2rem;
+    margin-bottom: 2rem;
+}
+
+.doc-icon {
+    font-size: 3rem;
+    animation: floatDoc 3s ease-in-out infinite;
+    opacity: 0.7;
+}
+
+.doc-icon:nth-child(1) { animation-delay: 0s; }
+.doc-icon:nth-child(2) { animation-delay: 1s; }
+.doc-icon:nth-child(3) { animation-delay: 2s; }
+
+@keyframes floatDoc {
+    0%, 100% { transform: translateY(0px); }
+    50% { transform: translateY(-10px); }
+}
+
+.upload-placeholder-enhanced h3 {
+    font-size: 1.75rem;
+    font-weight: 600;
+    margin-bottom: 1rem;
+    color: var(--text-primary);
+}
+
+.upload-placeholder-enhanced p {
+    font-size: 1.125rem;
+    color: var(--text-secondary);
+    margin-bottom: 2rem;
+    max-width: 500px;
+    margin-left: auto;
+    margin-right: auto;
+}
+
+.placeholder-features {
+    display: flex;
+    justify-content: center;
+    gap: 2rem;
+    margin-top: 2rem;
+}
+
+@media (max-width: 768px) {
+    .placeholder-features {
+        flex-direction: column;
+        gap: 1rem;
+    }
+}
+
+.placeholder-features .feature {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+    padding: 0.75rem 1rem;
+    background: rgba(255, 255, 255, 0.05);
+    border: 1px solid var(--border-color);
+    border-radius: 8px;
+    color: var(--text-secondary);
+}
+
+.placeholder-features .feature i {
+    color: var(--accent-color);
+}
+
+/* Enhanced Chat Page */
+.chat-hero {
+    padding: 2rem 0 3rem;
+    text-align: center;
+}
+
+.chat-hero-content {
+    max-width: 1000px;
+    margin: 0 auto;
+    padding: 0 2rem;
+}
+
+.chat-title-area {
+    margin-bottom: 2rem;
+}
+
+.chat-icon-large {
+    width: 80px;
+    height: 80px;
+    border-radius: 20px;
+    background: var(--gradient-accent);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    margin: 0 auto 2rem;
+    box-shadow: 0 12px 40px rgba(139, 92, 246, 0.3);
+    animation: float 6s ease-in-out infinite;
+}
+
+.chat-icon-large i {
+    font-size: 2.5rem;
+    color: white;
+}
+
+.chat-title-area h1 {
+    font-size: 3rem;
+    font-weight: 700;
+    margin-bottom: 1rem;
+    background: var(--gradient-accent);
+    -webkit-background-clip: text;
+    -webkit-text-fill-color: transparent;
+    background-clip: text;
+}
+
+.chat-title-area p {
+    font-size: 1.25rem;
+    color: var(--text-secondary);
+    max-width: 600px;
+    margin: 0 auto;
+    line-height: 1.6;
+}
+
+/* Enhanced Chat Status */
+.chat-status-enhanced {
+    margin-bottom: 2rem;
+}
+
+.status-card {
+    display: flex;
+    align-items: center;
+    gap: 1.5rem;
+    background: rgba(255, 255, 255, 0.02);
+    border: 1px solid var(--border-color);
+    border-radius: 16px;
+    padding: 1.5rem;
+    backdrop-filter: blur(10px);
+    transition: var(--transition-normal);
+}
+
+.status-card:hover {
+    background: rgba(255, 255, 255, 0.05);
+    border-color: var(--accent-color);
+}
+
+.status-icon {
+    width: 48px;
+    height: 48px;
+    border-radius: 12px;
+    background: var(--gradient-accent);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    flex-shrink: 0;
+}
+
+.status-icon i {
+    font-size: 1.5rem;
+    color: white;
+}
+
+.status-info {
+    flex: 1;
+}
+
+.status-info h3 {
+    font-size: 1.25rem;
+    font-weight: 600;
+    margin-bottom: 0.25rem;
+    color: var(--text-primary);
+}
+
+.status-info p {
+    color: var(--text-secondary);
+    margin: 0;
+    font-size: 0.9rem;
+}
+
+.status-actions {
+    display: flex;
+    gap: 0.5rem;
+}
+
+.quick-action-btn {
+    width: 40px;
+    height: 40px;
+    border-radius: 10px;
+    border: 1px solid var(--border-color);
+    background: rgba(255, 255, 255, 0.05);
+    color: var(--text-secondary);
+    cursor: pointer;
+    transition: var(--transition-fast);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+
+.quick-action-btn:hover {
+    background: var(--accent-color);
+    color: white;
+    border-color: var(--accent-color);
+    transform: scale(1.05);
+}
+
+/* Enhanced Chat Container */
+.chat-container-enhanced {
+    background: rgba(255, 255, 255, 0.02);
+    border: 1px solid var(--border-color);
+    border-radius: 20px;
+    overflow: hidden;
+    backdrop-filter: blur(10px);
+    margin-bottom: 2rem;
+}
+
+.chat-messages-container {
+    height: 500px;
+    overflow-y: auto;
+    padding: 2rem;
+    scroll-behavior: smooth;
+}
+
+.chat-messages-container::-webkit-scrollbar {
+    width: 6px;
+}
+
+.chat-messages-container::-webkit-scrollbar-track {
+    background: rgba(255, 255, 255, 0.05);
+    border-radius: 3px;
+}
+
+.chat-messages-container::-webkit-scrollbar-thumb {
+    background: var(--accent-color);
+    border-radius: 3px;
+}
+
+/* Enhanced Welcome Message */
+.welcome-message-enhanced {
+    background: rgba(139, 92, 246, 0.05);
+    border: 1px solid rgba(139, 92, 246, 0.2);
+    border-radius: 16px;
+    padding: 2rem;
+    margin-bottom: 2rem;
+}
+
+.message-avatar-enhanced {
+    position: relative;
+    margin-right: 1rem;
+    flex-shrink: 0;
+}
+
+.avatar-icon {
+    width: 48px;
+    height: 48px;
+    border-radius: 50%;
+    background: var(--gradient-accent);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
+}
+
+.avatar-icon i {
+    font-size: 1.5rem;
+    color: white;
+}
+
+.avatar-status {
+    position: absolute;
+    bottom: 2px;
+    right: 2px;
+    width: 12px;
+    height: 12px;
+    border-radius: 50%;
+    border: 2px solid var(--background-dark);
+}
+
+.avatar-status.online {
+    background: var(--success-color);
+}
+
+.avatar-status.typing {
+    background: var(--warning-color);
+    animation: pulse 2s infinite;
+}
+
+.message-content-enhanced {
+    flex: 1;
+}
+
+.message-header {
+    display: flex;
+    align-items: center;
+    gap: 1rem;
+    margin-bottom: 1rem;
+}
+
+.message-sender {
+    font-weight: 600;
+    color: var(--text-primary);
+}
+
+.message-time {
+    font-size: 0.75rem;
+    color: var(--text-muted);
+}
+
+.message-badge {
+    padding: 0.2rem 0.5rem;
+    border-radius: 10px;
+    font-size: 0.7rem;
+    font-weight: 600;
+    text-transform: uppercase;
+}
+
+.message-badge.ai {
+    background: var(--gradient-accent);
+    color: white;
+}
+
+/* Welcome Message Content */
+.welcome-intro {
+    margin-bottom: 2rem;
+}
+
+.welcome-intro h3 {
+    font-size: 1.5rem;
+    font-weight: 600;
+    margin-bottom: 0.5rem;
+    color: var(--text-primary);
+}
+
+.welcome-intro p {
+    color: var(--text-secondary);
+    line-height: 1.6;
+}
+
+.capabilities-grid {
+    display: grid;
+    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
+    gap: 1rem;
+    margin-bottom: 2rem;
+}
+
+.capability-item {
+    display: flex;
+    gap: 1rem;
+    padding: 1rem;
+    background: rgba(255, 255, 255, 0.05);
+    border: 1px solid var(--border-color);
+    border-radius: 12px;
+    transition: var(--transition-fast);
+}
+
+.capability-item:hover {
+    background: rgba(255, 255, 255, 0.08);
+    border-color: var(--accent-color);
+}
+
+.capability-icon {
+    width: 40px;
+    height: 40px;
+    border-radius: 10px;
+    background: var(--gradient-accent);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    flex-shrink: 0;
+}
+
+.capability-icon i {
+    font-size: 1.125rem;
+    color: white;
+}
+
+.capability-content h4 {
+    font-size: 0.9rem;
+    font-weight: 600;
+    margin-bottom: 0.25rem;
+    color: var(--text-primary);
+}
+
+.capability-content p {
+    font-size: 0.8rem;
+    color: var(--text-muted);
+    margin: 0;
+}
+
+.getting-started {
+    background: rgba(255, 255, 255, 0.05);
+    border: 1px solid var(--border-color);
+    border-radius: 12px;
+    padding: 1.5rem;
+}
+
+.getting-started p {
+    margin-bottom: 1rem;
+    color: var(--text-primary);
+    font-weight: 600;
+}
+
+.getting-started ol {
+    margin: 0;
+    padding-left: 1.5rem;
+    color: var(--text-secondary);
+}
+
+.getting-started li {
+    margin-bottom: 0.5rem;
+    line-height: 1.5;
+}
+
+/* Chat Loading Indicator */
+.chat-loading {
+    display: flex;
+    align-items: center;
+    gap: 1rem;
+    padding: 1rem;
+    margin-bottom: 1rem;
+}
+
+.typing-indicator {
+    display: flex;
+    align-items: center;
+    gap: 1rem;
+    background: rgba(255, 255, 255, 0.05);
+    border: 1px solid var(--border-color);
+    border-radius: 12px;
+    padding: 1rem 1.5rem;
+}
+
+.typing-dots {
+    display: flex;
+    gap: 0.25rem;
+}
+
+.typing-dots .dot {
+    width: 6px;
+    height: 6px;
+    border-radius: 50%;
+    background: var(--accent-color);
+    animation: typingDots 1.4s infinite ease-in-out;
+}
+
+.typing-dots .dot:nth-child(1) { animation-delay: -0.32s; }
+.typing-dots .dot:nth-child(2) { animation-delay: -0.16s; }
+
+@keyframes typingDots {
+    0%, 80%, 100% { transform: scale(0.8); opacity: 0.5; }
+    40% { transform: scale(1); opacity: 1; }
+}
+
+.typing-text {
+    color: var(--text-secondary);
+    font-size: 0.9rem;
+    font-style: italic;
+}
+
+/* Enhanced Chat Input */
+.chat-input-enhanced {
+    border-top: 1px solid var(--border-color);
+    background: rgba(255, 255, 255, 0.02);
+}
+
+/* Smart Suggestions */
+.smart-suggestions {
+    padding: 1.5rem;
+    border-bottom: 1px solid var(--border-color);
+}
+
+.suggestions-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    margin-bottom: 1rem;
+}
+
+.suggestions-header h4 {
+    font-size: 1rem;
+    font-weight: 600;
+    color: var(--text-primary);
+    margin: 0;
+}
+
+.suggestions-toggle {
+    background: none;
+    border: none;
+    color: var(--text-secondary);
+    cursor: pointer;
+    transition: var(--transition-fast);
+    padding: 0.25rem;
+}
+
+.suggestions-toggle:hover {
+    color: var(--accent-color);
+}
+
+.suggestions-content {
+    display: block;
+    animation: slideDown 0.3s ease-out;
+}
+
+.suggestions-content.collapsed {
+    display: none;
+}
+
+.suggestion-categories {
+    display: grid;
+    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
+    gap: 1.5rem;
+}
+
+.suggestion-category h5 {
+    font-size: 0.875rem;
+    font-weight: 600;
+    color: var(--text-secondary);
+    margin-bottom: 0.75rem;
+    text-transform: uppercase;
+    letter-spacing: 0.5px;
+}
+
+.suggestion-chip-enhanced {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+    width: 100%;
+    padding: 0.75rem;
+    background: rgba(255, 255, 255, 0.05);
+    border: 1px solid var(--border-color);
+    border-radius: 8px;
+    color: var(--text-secondary);
+    cursor: pointer;
+    transition: var(--transition-fast);
+    margin-bottom: 0.5rem;
+    text-align: left;
+}
+
+.suggestion-chip-enhanced:hover {
+    background: rgba(139, 92, 246, 0.1);
+    border-color: var(--accent-color);
+    color: var(--text-primary);
+}
+
+.suggestion-chip-enhanced i {
+    color: var(--accent-color);
+    flex-shrink: 0;
+}
+
+/* Chat Input Wrapper */
+.chat-input-wrapper {
+    padding: 1.5rem;
+}
+
+.input-container {
+    margin-bottom: 1rem;
+}
+
+.input-field {
+    display: flex;
+    align-items: flex-end;
+    background: rgba(255, 255, 255, 0.05);
+    border: 2px solid var(--border-color);
+    border-radius: 16px;
+    padding: 1rem;
+    gap: 1rem;
+    transition: var(--transition-normal);
+}
+
+.input-field:focus-within {
+    border-color: var(--accent-color);
+    box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.1);
+}
+
+.input-field textarea {
+    flex: 1;
+    background: transparent;
+    border: none;
+    color: var(--text-primary);
+    font-size: 1rem;
+    resize: none;
+    max-height: 120px;
+    font-family: inherit;
+    line-height: 1.5;
+}
+
+.input-field textarea:focus {
+    outline: none;
+}
+
+.input-field textarea::placeholder {
+    color: var(--text-muted);
+}
+
+.input-actions {
+    display: flex;
+    gap: 0.5rem;
+    align-items: center;
+}
+
+.action-btn {
+    width: 36px;
+    height: 36px;
+    border-radius: 8px;
+    border: none;
+    background: rgba(255, 255, 255, 0.1);
+    color: var(--text-muted);
+    cursor: pointer;
+    transition: var(--transition-fast);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+
+.action-btn:hover {
+    background: rgba(255, 255, 255, 0.15);
+    color: var(--text-secondary);
+}
+
+.send-btn-enhanced {
+    width: 36px;
+    height: 36px;
+    border-radius: 8px;
+    border: none;
+    background: var(--gradient-accent);
+    color: white;
+    cursor: pointer;
+    transition: var(--transition-fast);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+
+.send-btn-enhanced:hover {
+    transform: scale(1.05);
+    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.4);
+}
+
+/* Enhanced Input Footer */
+.input-footer-enhanced {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    flex-wrap: wrap;
+    gap: 1rem;
+}
+
+.input-hints {
+    display: flex;
+    gap: 1rem;
+    flex-wrap: wrap;
+}
+
+.hint-item {
+    font-size: 0.75rem;
+    color: var(--text-muted);
+    display: flex;
+    align-items: center;
+    gap: 0.25rem;
+}
+
+.hint-item kbd {
+    padding: 0.1rem 0.3rem;
+    background: rgba(255, 255, 255, 0.1);
+    border-radius: 4px;
+    font-size: 0.7rem;
+    border: 1px solid var(--border-color);
+}
+
+.chat-stats {
+    display: flex;
+    gap: 1rem;
+}
+
+.stat-item {
+    font-size: 0.75rem;
+    color: var(--text-muted);
+    display: flex;
+    align-items: center;
+    gap: 0.25rem;
+}
+
+.stat-item i {
+    color: var(--accent-color);
+}
+
+/* Chat Quick Actions */
+.chat-quick-actions {
+    background: rgba(255, 255, 255, 0.02);
+    border: 1px solid var(--border-color);
+    border-radius: 16px;
+    padding: 1.5rem;
+    backdrop-filter: blur(10px);
+}
+
+.quick-actions-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    margin-bottom: 1rem;
+}
+
+.quick-actions-header h4 {
+    font-size: 1.125rem;
+    font-weight: 600;
+    color: var(--text-primary);
+    margin: 0;
+}
+
+.close-quick-actions {
+    background: none;
+    border: none;
+    color: var(--text-secondary);
+    cursor: pointer;
+    padding: 0.25rem;
+    transition: var(--transition-fast);
+}
+
+.close-quick-actions:hover {
+    color: var(--text-primary);
+}
+
+.quick-actions-grid {
+    display: grid;
+    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
+    gap: 1rem;
+}
+
+.quick-action-card {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    gap: 0.75rem;
+    padding: 1.5rem;
+    background: rgba(255, 255, 255, 0.05);
+    border: 1px solid var(--border-color);
+    border-radius: 12px;
+    cursor: pointer;
+    transition: var(--transition-normal);
+    text-align: center;
+}
+
+.quick-action-card:hover {
+    background: rgba(255, 255, 255, 0.08);
+    border-color: var(--accent-color);
+    transform: translateY(-2px);
+    box-shadow: 0 8px 25px rgba(139, 92, 246, 0.2);
+}
+
+.quick-action-card i {
+    font-size: 1.5rem;
+    color: var(--accent-color);
+}
+
+.quick-action-card span {
+    font-size: 0.875rem;
+    font-weight: 500;
+    color: var(--text-secondary);
+}
+
+/* Responsive Design */
+@media (max-width: 768px) {
+    .chat-title-area h1 {
+        font-size: 2rem;
+    }
+    
+    .status-card {
+        flex-direction: column;
+        text-align: center;
+        gap: 1rem;
+    }
+    
+    .suggestion-categories {
+        grid-template-columns: 1fr;
+    }
+    
+    .input-footer-enhanced {
+        flex-direction: column;
+        align-items: flex-start;
+    }
+    
+    .quick-actions-grid {
+        grid-template-columns: repeat(2, 1fr);
+    }
+}
+
+/* Summary + Chat Layout */
+.summary-chat-header {
+    background: rgba(255, 255, 255, 0.02);
+    border-bottom: 1px solid var(--border-color);
+    padding: 1.5rem 2rem;
+    backdrop-filter: blur(10px);
+}
+
+.header-content {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    max-width: 1400px;
+    margin: 0 auto;
+    gap: 2rem;
+}
+
+.back-btn {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+    padding: 0.75rem 1rem;
+    background: rgba(255, 255, 255, 0.05);
+    border: 1px solid var(--border-color);
+    border-radius: 8px;
+    color: var(--text-secondary);
+    text-decoration: none;
+    transition: var(--transition-fast);
+    cursor: pointer;
+    font-size: 0.9rem;
+}
+
+.back-btn:hover {
+    background: rgba(255, 255, 255, 0.1);
+    color: var(--text-primary);
+    border-color: var(--accent-color);
+}
+
+.paper-info {
+    flex: 1;
+    min-width: 0;
+}
+
+.paper-info h2 {
+    font-size: 1.5rem;
+    font-weight: 600;
+    margin-bottom: 0.5rem;
+    color: var(--text-primary);
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+}
+
+.paper-meta {
+    display: flex;
+    align-items: center;
+    gap: 1rem;
+    font-size: 0.9rem;
+    color: var(--text-secondary);
+}
+
+.paper-meta .author {
+    color: var(--accent-color);
+}
+
+.paper-meta .date,
+.paper-meta .category {
+    padding: 0.2rem 0.5rem;
+    background: rgba(255, 255, 255, 0.1);
+    border-radius: 4px;
+    font-size: 0.8rem;
+}
+
+.header-actions {
+    display: flex;
+    gap: 0.5rem;
+}
+
+.action-btn-header {
+    width: 40px;
+    height: 40px;
+    border-radius: 8px;
+    border: 1px solid var(--border-color);
+    background: rgba(255, 255, 255, 0.05);
+    color: var(--text-secondary);
+    cursor: pointer;
+    transition: var(--transition-fast);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+
+.action-btn-header:hover {
+    background: var(--accent-color);
+    color: white;
+    border-color: var(--accent-color);
+}
+
+/* Summary + Chat Container */
+.summary-chat-container {
+    display: grid;
+    grid-template-columns: 1fr 1fr;
+    gap: 3rem;
+    padding: 3rem;
+    max-width: 1600px;
+    margin: 0 auto;
+    height: calc((var(--vh, 1vh) * 100) - 180px);
+    min-height: 800px;
+}
+
+/* Summary Panel */
+.summary-panel {
+    background: rgba(255, 255, 255, 0.02);
+    border: 1px solid var(--border-color);
+    border-radius: 16px;
+    overflow: hidden;
+    backdrop-filter: blur(10px);
+    display: flex;
+    flex-direction: column;
+}
+
+.summary-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    padding: 2rem;
+    border-bottom: 1px solid var(--border-color);
+    background: rgba(255, 255, 255, 0.02);
+}
+
+.summary-title {
+    display: flex;
+    align-items: center;
+    gap: 0.75rem;
+}
+
+.summary-title i {
+    color: var(--accent-color);
+    font-size: 1.25rem;
+}
+
+.summary-title h3 {
+    font-size: 1.5rem;
+    font-weight: 600;
+    color: var(--text-primary);
+    margin: 0;
+}
+
+.summary-actions {
+    display: flex;
+    gap: 0.5rem;
+}
+
+.summary-action-btn {
+    width: 36px;
+    height: 36px;
+    border-radius: 8px;
+    border: 1px solid var(--border-color);
+    background: rgba(255, 255, 255, 0.05);
+    color: var(--text-secondary);
+    cursor: pointer;
+    transition: var(--transition-fast);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+
+.summary-action-btn:hover {
+    background: var(--accent-color);
+    color: white;
+    border-color: var(--accent-color);
+}
+
+.summary-content {
+    flex: 1;
+    padding: 3rem;
+    overflow-y: auto;
+    font-size: 1.1rem;
+    line-height: 1.8;
+}
+
+.summary-loading {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    justify-content: center;
+    height: 200px;
+    color: var(--text-secondary);
+}
+
+.loading-spinner {
+    width: 40px;
+    height: 40px;
+    border: 3px solid rgba(139, 92, 246, 0.3);
+    border-top: 3px solid var(--accent-color);
+    border-radius: 50%;
+    animation: spin 1s linear infinite;
+    margin-bottom: 1rem;
+}
+
+@keyframes spin {
+    0% { transform: rotate(0deg); }
+    100% { transform: rotate(360deg); }
+}
+
+.summary-text {
+    color: var(--text-secondary);
+    line-height: 1.9;
+    font-size: 1.2rem;
+}
+
+.summary-text h1,
+.summary-text h2,
+.summary-text h3,
+.summary-text h4 {
+    color: var(--text-primary);
+    margin: 2rem 0 1.5rem;
+    font-size: 1.4rem;
+    font-weight: 600;
+}
+
+.summary-text p {
+    margin-bottom: 1.5rem;
+    font-size: 1.1rem;
+    line-height: 1.8;
+}
+
+.summary-text ul,
+.summary-text ol {
+    margin: 1rem 0;
+    padding-left: 1.5rem;
+}
+
+.summary-text li {
+    margin-bottom: 0.5rem;
+}
+
+.summary-text strong {
+    color: var(--text-primary);
+}
+
+.summary-stats {
+    display: flex;
+    justify-content: space-between;
+    padding: 1rem 1.5rem;
+    border-top: 1px solid var(--border-color);
+    background: rgba(255, 255, 255, 0.02);
+}
+
+.summary-stats .stat-item {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+    font-size: 0.85rem;
+    color: var(--text-muted);
+}
+
+.summary-stats .stat-item i {
+    color: var(--accent-color);
+}
+
+/* Chat Panel */
+.chat-panel {
+    background: rgba(255, 255, 255, 0.02);
+    border: 1px solid var(--border-color);
+    border-radius: 16px;
+    overflow: hidden;
+    backdrop-filter: blur(10px);
+    display: flex;
+    flex-direction: column;
+}
+
+.chat-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    padding: 2rem;
+    border-bottom: 1px solid var(--border-color);
+    background: rgba(255, 255, 255, 0.02);
+}
+
+.chat-title {
+    display: flex;
+    align-items: center;
+    gap: 0.75rem;
+}
+
+.chat-title i {
+    color: var(--accent-color);
+    font-size: 1.25rem;
+}
+
+.chat-title h3 {
+    font-size: 1.5rem;
+    font-weight: 600;
+    color: var(--text-primary);
+    margin: 0;
+}
+
+.chat-status .status-indicator {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+    font-size: 0.85rem;
+}
+
+.chat-status .status-dot {
+    width: 8px;
+    height: 8px;
+    border-radius: 50%;
+    background: var(--success-color);
+    animation: pulse 2s infinite;
+}
+
+.chat-messages-panel {
+    flex: 1;
+    padding: 2.5rem;
+    overflow-y: auto;
+    font-size: 1.1rem;
+}
+
+.chat-welcome {
+    display: flex;
+    gap: 1.5rem;
+    padding: 2rem;
+    background: rgba(139, 92, 246, 0.05);
+    border: 1px solid rgba(139, 92, 246, 0.2);
+    border-radius: 16px;
+    margin-bottom: 2rem;
+}
+
+.welcome-avatar {
+    width: 40px;
+    height: 40px;
+    border-radius: 50%;
+    background: var(--gradient-accent);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    flex-shrink: 0;
+}
+
+.welcome-avatar i {
+    color: white;
+    font-size: 1.25rem;
+}
+
+.welcome-content h4 {
+    font-size: 1.2rem;
+    font-weight: 600;
+    color: var(--text-primary);
+    margin-bottom: 0.75rem;
+}
+
+.welcome-content p {
+    color: var(--text-secondary);
+    font-size: 1.05rem;
+    line-height: 1.6;
+    margin: 0;
+}
+
+.chat-input-panel {
+    border-top: 1px solid var(--border-color);
+    background: rgba(255, 255, 255, 0.02);
+    padding: 2.5rem;
+}
+
+.quick-questions {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 0.5rem;
+    margin-bottom: 1rem;
+}
+
+.quick-question-btn {
+    display: flex;
+    align-items: center;
+    gap: 0.75rem;
+    padding: 0.75rem 1.25rem;
+    background: rgba(255, 255, 255, 0.05);
+    border: 1px solid var(--border-color);
+    border-radius: 25px;
+    color: var(--text-secondary);
+    font-size: 0.95rem;
+    cursor: pointer;
+    transition: var(--transition-fast);
+}
+
+.quick-question-btn:hover {
+    background: rgba(139, 92, 246, 0.1);
+    border-color: var(--accent-color);
+    color: var(--text-primary);
+}
+
+.quick-question-btn i {
+    color: var(--accent-color);
+    font-size: 0.7rem;
+}
+
+.chat-input-container {
+    margin-top: 1rem;
+}
+
+.chat-input-field {
+    display: flex;
+    align-items: flex-end;
+    gap: 1rem;
+    background: rgba(255, 255, 255, 0.05);
+    border: 2px solid var(--border-color);
+    border-radius: 16px;
+    padding: 1.25rem;
+    transition: var(--transition-normal);
+}
+
+.chat-input-field:focus-within {
+    border-color: var(--accent-color);
+    box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.1);
+}
+
+.chat-input-field textarea {
+    flex: 1;
+    background: transparent;
+    border: none;
+    color: var(--text-primary);
+    font-size: 1.1rem;
+    resize: none;
+    max-height: 150px;
+    min-height: 50px;
+    font-family: inherit;
+    line-height: 1.6;
+    padding: 0.5rem 0;
+}
+
+.chat-input-field textarea:focus {
+    outline: none;
+}
+
+.chat-input-field textarea::placeholder {
+    color: var(--text-muted);
+}
+
+.send-btn-panel {
+    width: 44px;
+    height: 44px;
+    border-radius: 12px;
+    border: none;
+    background: var(--gradient-accent);
+    color: white;
+    cursor: pointer;
+    transition: var(--transition-fast);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    flex-shrink: 0;
+    font-size: 1.1rem;
+}
+
+.send-btn-panel:hover {
+    transform: scale(1.05);
+    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.4);
+}
+
+/* Chat Messages in Panel */
+.chat-message-panel {
+    display: flex;
+    gap: 1rem;
+    margin-bottom: 1.5rem;
+    animation: messageSlideIn 0.3s ease-out;
+}
+
+.chat-message-panel.user {
+    flex-direction: row-reverse;
+}
+
+.message-avatar-panel {
+    width: 32px;
+    height: 32px;
+    border-radius: 50%;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    flex-shrink: 0;
+}
+
+.message-avatar-panel.user {
+    background: var(--gradient-primary);
+}
+
+.message-avatar-panel.bot {
+    background: var(--gradient-accent);
+}
+
+.message-avatar-panel i {
+    color: white;
+    font-size: 0.9rem;
+}
+
+.message-content-panel {
+    flex: 1;
+    min-width: 0;
+}
+
+.message-content-panel.user {
+    text-align: right;
+}
+
+.message-bubble {
+    display: inline-block;
+    padding: 1.1rem 1.6rem;
+    border-radius: 18px;
+    max-width: 95%;
+    word-wrap: break-word;
+    font-size: 1.1rem;
+    line-height: 1.75;
+    box-shadow: 0 6px 18px rgba(0,0,0,0.15);
+}
+
+.message-bubble.user {
+    background: linear-gradient(135deg, rgba(124,58,237,0.18), rgba(168,85,247,0.18));
+    border: none;
+    color: var(--text-primary);
+}
+
+.message-bubble.bot {
+    background: rgba(31, 41, 55, 0.6);
+    border: none;
+    color: #dbe3ee;
+}
+
+.message-time-panel {
+    font-size: 0.7rem;
+    color: var(--text-muted);
+    margin-top: 0.25rem;
+}
+
+/* Responsive Design */
+@media (max-width: 1200px) {
+    .summary-chat-container {
+        grid-template-columns: 1fr;
+        grid-template-rows: 1fr 1fr;
+        height: auto;
+        min-height: calc((var(--vh, 1vh) * 100) - 200px);
+    }
+    
+    .header-content {
+        flex-direction: column;
+        gap: 1rem;
+        text-align: center;
+    }
+    
+    .paper-info h2 {
+        white-space: normal;
+        text-align: center;
+    }
+}
+
+@media (max-width: 768px) {
+    .summary-chat-container {
+        padding: 1rem;
+        gap: 1rem;
+    }
+    
+    .summary-header,
+    .chat-header { padding: 1rem; position: sticky; top: 70px; z-index: 5; }
+    
+    .summary-content {
+        padding: 1rem;
+        font-size: 1rem;
+    }
+    
+    .chat-input-panel {
+        padding: 1rem;
+    }
+    
+    .chat-messages-panel {
+        padding: 1rem;
+        font-size: 1rem;
+    }
+    
+    .quick-questions {
+        flex-direction: column;
+    }
+    
+    .quick-question-btn {
+        justify-content: center;
+        font-size: 0.9rem;
+        padding: 0.6rem 1rem;
+    }
+    
+    .summary-stats {
+        flex-direction: column;
+        gap: 0.75rem;
+    }
+    
+    .summary-text {
+        font-size: 1rem;
+    }
+    
+    .summary-text h1,
+    .summary-text h2,
+    .summary-text h3,
+    .summary-text h4 {
+        font-size: 1.25rem;
+    }
+    
+    .summary-text p {
+        font-size: 1rem;
+    }
+    /* Make chat and summary panels occupy full height on mobile */
+    #summary-tab .summary-panel,
+    #chat-tab .chat-panel { height: calc((var(--vh, 1vh) * 100) - 180px); }
+    #summary-tab .summary-content,
+    #chat-tab .chat-messages-panel { height: calc((var(--vh, 1vh) * 100) - 300px); }
+    .chat-input-panel { position: sticky; bottom: 0; background: rgba(15, 23, 42, 0.9); backdrop-filter: blur(10px); }
+    .chat-input-field { padding: 1rem; }
+    .chat-input-field textarea { min-height: 44px; }
+}
+
+/* Tab Navigation Styles */
+.tab-navigation {
+    background: rgba(255, 255, 255, 0.05);
+    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
+    padding: 0 2rem;
+    margin-bottom: 2rem;
+}
+
+.tab-nav-container {
+    display: flex;
+    gap: 0;
+    max-width: 1200px;
+    margin: 0 auto;
+    overflow-x: auto;
+    align-items: center;
+}
+
+.tab-btn {
+    position: relative;
+    background: none;
+    border: none;
+    color: #8b949e;
+    padding: 1.5rem 2rem;
+    white-space: nowrap;
+}
+
+/* view-toggle removed for strict tabs */
+
+/* Chat Message Styles */
+.chat-message {
+    margin-bottom: 1.5rem;
+    padding: 1rem;
+    border-radius: 12px;
+    background: rgba(255, 255, 255, 0.05);
+    border: 1px solid rgba(255, 255, 255, 0.1);
+}
+
+.chat-message.user {
+    background: rgba(124, 58, 237, 0.1);
+    border-color: rgba(124, 58, 237, 0.2);
+    margin-left: 2rem;
+}
+
+.chat-message.assistant {
+    background: rgba(16, 185, 129, 0.1);
+    border-color: rgba(16, 185, 129, 0.2);
+    margin-right: 2rem;
+}
+
+.message-header {
+    display: flex;
+    align-items: center;
+    gap: 0.75rem;
+    margin-bottom: 0.75rem;
+}
+
+.message-avatar {
+    width: 32px;
+    height: 32px;
+    border-radius: 50%;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-size: 0.9rem;
+}
+
+.chat-message.user .message-avatar {
+    background: linear-gradient(135deg, #7c3aed, #a855f7);
+    color: white;
+}
+
+.chat-message.assistant .message-avatar {
+    background: linear-gradient(135deg, #10b981, #06d6a0);
+    color: white;
+}
+
+.message-info {
+    display: flex;
+    flex-direction: column;
+    gap: 0.125rem;
+}
+
+.message-sender {
+    color: #ffffff;
+    font-weight: 500;
+    font-size: 0.9rem;
+}
+
+.message-time {
+    color: #6b7280;
+    font-size: 0.75rem;
+}
+
+.message-content {
+    color: #e6edf3;
+    line-height: 1.6;
+}
+
+.message-content p {
+    margin: 0;
+}
+
+/* Typing Indicator */
+.typing-indicator {
+    margin-bottom: 1.5rem;
+    padding: 1rem;
+    border-radius: 12px;
+    background: rgba(16, 185, 129, 0.1);
+    border: 1px solid rgba(16, 185, 129, 0.2);
+    margin-right: 2rem;
+}
+
+.typing-dots {
+    display: flex;
+    gap: 0.25rem;
+    align-items: center;
+    padding: 0.5rem 0;
+}
+
+.typing-dots .dot {
+    width: 8px;
+    height: 8px;
+    border-radius: 50%;
+    background: #10b981;
+    animation: typingAnimation 1.4s infinite ease-in-out;
+}
+
+.typing-dots .dot:nth-child(1) {
+    animation-delay: 0s;
+}
+
+.typing-dots .dot:nth-child(2) {
+    animation-delay: 0.2s;
+}
+
+.typing-dots .dot:nth-child(3) {
+    animation-delay: 0.4s;
+}
+
+@keyframes typingAnimation {
+    0%, 60%, 100% {
+        transform: scale(1);
+        opacity: 0.5;
+    }
+    30% {
+        transform: scale(1.2);
+        opacity: 1;
+    }
+}
+
+/* Enhanced Summary Tab Styles */
+.summary-container {
+    background: transparent;
+    border: none;
+}
+
+.summary-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: flex-start;
+    padding: 1.5rem 2rem;
+    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
+    background: rgba(255, 255, 255, 0.03);
+    border-top-left-radius: 16px;
+    border-top-right-radius: 16px;
+}
+
+.summary-title {
+    display: flex;
+    align-items: center;
+    gap: 1rem;
+}
+
+.summary-icon {
+    background: linear-gradient(135deg, #7c3aed, #a855f7);
+    width: 48px;
+    height: 48px;
+    border-radius: 12px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+
+.summary-icon i {
+    font-size: 1.5rem;
+    color: white;
+}
+
+.summary-title-text h3 {
+    color: #ffffff;
+    font-size: 1.5rem;
+    font-weight: 600;
+    margin: 0 0 0.25rem 0;
+}
+
+.summary-title-text p {
+    color: #8b949e;
+    margin: 0;
+    font-size: 0.95rem;
+}
+
+.summary-actions {
+    display: flex;
+    gap: 0.75rem;
+}
+
+.summary-action-btn {
+    background: rgba(255, 255, 255, 0.1);
+    border: 1px solid rgba(255, 255, 255, 0.2);
+    color: #ffffff;
+    padding: 0.75rem 1rem;
+    border-radius: 8px;
+    cursor: pointer;
+    font-size: 0.9rem;
+    transition: all 0.3s ease;
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+}
+
+.summary-action-btn:hover {
+    background: rgba(124, 58, 237, 0.3);
+    border-color: rgba(124, 58, 237, 0.5);
+    transform: translateY(-1px);
+}
+
+.summary-body {
+    display: grid;
+    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
+    gap: 0;
+}
+
+@media (max-width: 992px) {
+    .summary-body {
+        grid-template-columns: 1fr;
+    }
+}
+
+.summary-main-content {
+    min-width: 0;
+    padding: 2rem;
+}
+
+.summary-content {
+    height: 65vh;
+    max-height: 700px;
+    overflow-y: auto;
+    padding-right: 1.5rem;
+}
+
+.summary-content::-webkit-scrollbar {
+    width: 6px;
+}
+.summary-content::-webkit-scrollbar-track {
+    background: rgba(0, 0, 0, 0.2);
+    border-radius: 3px;
+}
+.summary-content::-webkit-scrollbar-thumb {
+    background: rgba(255, 255, 255, 0.2);
+    border-radius: 3px;
+}
+
+.summary-loading {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    justify-content: center;
+    height: 100%;
+    gap: 1rem;
+}
+
+.summary-text {
+    color: #cdd5e0;
+    line-height: 1.8;
+    font-size: 1.05rem;
+}
+
+.summary-text h3 {
+    font-size: 1.25rem;
+    color: #fff;
+    font-weight: 600;
+    margin-top: 2rem;
+    margin-bottom: 1rem;
+    padding-bottom: 0.5rem;
+    border-bottom: 1px solid rgba(255,255,255,0.1);
+}
+.summary-text p {
+    margin-bottom: 1rem;
+}
+
+.summary-sidebar {
+    display: flex;
+    flex-direction: column;
+    gap: 2rem;
+    padding: 2rem;
+    border-left: 1px solid rgba(255, 255, 255, 0.1);
+    background: rgba(255, 255, 255, 0.02);
+}
+
+.summary-stats, .summary-keywords {
+    background: rgba(255, 255, 255, 0.05);
+    border: 1px solid rgba(255, 255, 255, 0.1);
+    border-radius: 12px;
+    padding: 1.5rem;
+}
+
+.summary-stats h4, .summary-keywords h4 {
+    display: flex;
+    align-items: center;
+    gap: 0.75rem;
+    font-size: 1.1rem;
+    font-weight: 600;
+    margin: 0 0 1rem 0;
+    color: #fff;
+    padding-bottom: 1rem;
+    border-bottom: 1px solid rgba(255,255,255,0.1);
+}
+
+.stats-list {
+    display: grid;
+    grid-template-columns: 1fr 1fr;
+    gap: 1rem;
+}
+
+.stat-item {
+    background: rgba(0,0,0,0.2);
+    border-radius: 12px;
+    padding: 1.25rem;
+    position: relative;
+    overflow: hidden;
+    transition: all 0.2s ease-in-out;
+    border: 1px solid transparent;
+}
+
+.stat-item:hover {
+    transform: translateY(-2px);
+    background: rgba(0,0,0,0.3);
+    border-color: rgba(124, 58, 237, 0.5);
+}
+
+.stat-text {
+    position: relative;
+    z-index: 2;
+}
+
+.stat-label {
+    font-size: 0.8rem;
+    color: #8b949e;
+    margin-bottom: 0.25rem;
+    text-transform: uppercase;
+    letter-spacing: 0.5px;
+}
+
+.stat-value {
+    font-size: 1.6rem;
+    font-weight: 700;
+    color: #fff;
+}
+
+.stat-icon-small {
+    display: none;
+}
+
+.stat-item::after {
+    font-family: "Font Awesome 6 Free";
+    font-weight: 900;
+    position: absolute;
+    right: 1rem;
+    top: 50%;
+    transform: translateY(-50%);
+    font-size: 2.5rem;
+    color: rgba(124, 58, 237, 0.15);
+    z-index: 1;
+    transition: all 0.3s ease;
+}
+
+.stat-item:hover::after {
+    color: rgba(124, 58, 237, 0.3);
+    transform: translateY(-50%) scale(1.1);
+}
+
+#readingTime-item::after { content: '\f017'; }
+#wordCount-item::after { content: '\f15c'; }
+#compressionRatio-item::after { content: '\f78c'; }
+#keyPoints-item::after { content: '\f005'; }
+
+.keywords-list {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 0.75rem;
+}
+
+.keyword-chip {
+    background: rgba(255, 255, 255, 0.1);
+    color: #cdd5e0;
+    padding: 0.5rem 1rem;
+    border-radius: 20px;
+    font-size: 0.85rem;
+    font-weight: 500;
+    cursor: pointer;
+    transition: all 0.2s ease;
+}
+
+.keyword-chip:hover {
+    background: #7c3aed;
+    color: #fff;
+    transform: translateY(-1px);
+}
+
+.keyword-chip.skeleton {
+    background: rgba(255, 255, 255, 0.1);
+    width: 80px;
+    height: 33px;
+    border-radius: 20px;
+    animation: pulse-bg 1.5s infinite;
+}
+
+@keyframes pulse-bg {
+    0%, 100% {
+        background-color: rgba(255, 255, 255, 0.1);
+    }
+    50% {
+        background-color: rgba(255, 255, 255, 0.15);
+    }
+}
+
+.mobile-nav-toggle {
+    display: none;
+    background: rgba(255, 255, 255, 0.08);
+    border: 1px solid var(--border-color);
+    color: var(--text-primary);
+    padding: 0.5rem 0.75rem;
+    border-radius: 10px;
+}
+
+@media (max-width: 992px) {
+    .mobile-nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
+    .landing-nav-links, .nav-links {
+        position: absolute;
+        top: 70px;
+        right: 0;
+        left: 0;
+        display: none;
+        flex-direction: column;
+        gap: 0.5rem;
+        background: rgba(15, 23, 42, 0.98);
+        border-bottom: 1px solid var(--border-color);
+        padding: 0.75rem 1rem 1rem;
+    }
+    .landing-nav-links.show, .nav-links.show { display: flex; }
+}
+
+@media (max-width: 480px) {
+    .toast-container { right: 50%; transform: translateX(50%); }
+}
+
+/* Show only active tab content */
+.tab-content { display: none; }
+.tab-content.active { display: block; }
+
+/* Chat Container sizing overrides for better viewport fit */
+#chat-tab .chat-container {
+    height: calc((var(--vh, 1vh) * 100) - 180px);
+    max-height: none;
+}
+
+/* Reduce header/input paddings to save vertical space */
+#chat-tab .chat-header { padding: 1rem 1.25rem; }
+#chat-tab .chat-messages-container { padding: 1.25rem; }
+#chat-tab .chat-input-area { padding: 0.75rem 1.0rem 1rem; position: sticky; bottom: 0; background: rgba(15,23,42,0.9); backdrop-filter: blur(8px); }
+
+/* Make quick chips compact and horizontally scrollable */
+#chat-tab .quick-questions-chips {
+    margin-bottom: 0.5rem;
+    gap: 0.4rem;
+    overflow-x: auto;
+    white-space: nowrap;
+}
+#chat-tab .quick-questions-chips::-webkit-scrollbar { height: 6px; }
+
+/* Slightly tighter spacing between messages */
+.chat-message-panel { margin-bottom: 1rem; }
+
+/* Slightly smaller bubble text to fit one exchange */
+.message-bubble { font-size: 1rem; line-height: 1.6; }
+
+@media (max-width: 768px) {
+    #chat-tab .chat-messages-container { padding: 0.75rem; }
+    .chat-message-panel { margin-bottom: 0.75rem; }
+    .message-bubble { font-size: 0.95rem; line-height: 1.55; }
+}
+
+/* Global mobile improvements */
+@media (max-width: 480px) {
+	/* Navbar */
+	.nav-container { height: 56px; padding: 0 0.75rem; }
+	.brand-icon { width: 32px; height: 32px; }
+	.brand-name { font-size: 1rem; }
+	.brand-tagline { display: none; }
+	.mobile-nav-toggle { padding: 0.4rem 0.6rem; }
+
+	/* Layout paddings */
+	.main-container { padding: 0.75rem; }
+	.section { padding-left: 0; padding-right: 0; }
+
+	/* Hero */
+	.hero { padding: 3.5rem 0 2rem; }
+	.hero-title { font-size: 2rem; }
+	.hero-subtitle { font-size: 1rem; padding: 0 0.25rem; }
+	.hero-cta { gap: 0.5rem; }
+	.cta-button { width: 100%; min-width: auto; padding: 0.75rem 1rem; }
+
+	/* Cards */
+	.feature-card, .quick-search-card, .upload-method-card { padding: 1rem; border-radius: 12px; }
+	.paper-card, .result-card { padding: 1rem; border-radius: 12px; }
+
+	/* Search */
+	.search-hero-content { padding: 0 1rem; }
+	.search-input-wrapper { padding: 0.5rem 1rem; border-radius: 14px; }
+	.search-submit-btn { padding: 0.6rem 0.9rem; border-radius: 10px; }
+	.search-actions { gap: 0.35rem; }
+	.voice-search-btn, .advanced-search-btn { width: 42px; height: 42px; border-radius: 10px; }
+
+	/* Tabs & headers */
+	.tab-navigation { padding: 0 1rem; }
+	.tab-btn { padding: 0.9rem 1rem; }
+	.summary-header, .chat-header { padding: 1rem; }
+	.summary-content { padding: 1rem; }
+
+	/* Summary + Chat sticky alignment */
+	.summary-header, .chat-header { position: sticky; top: 56px; z-index: 5; }
+
+	/* Chat */
+	#chat-tab .chat-messages-container { padding: 0.75rem; }
+	.quick-questions-chips { gap: 0.4rem; }
+	.message-bubble { font-size: 0.97rem; line-height: 1.55; }
+}
+
+@media (max-width: 360px) {
+	.nav-container { padding: 0 0.5rem; }
+	.hero-title { font-size: 1.75rem; }
+	.search-input-wrapper input { font-size: 1rem; }
+	.tab-btn { padding: 0.75rem 0.85rem; }
+	.message-bubble { font-size: 0.92rem; }
+}
+
+/* My Papers mobile responsiveness */
+@media (max-width: 768px) {
+	.mypapers-hero { padding: 2rem 0 1.5rem; }
+	.mypapers-hero h1 { font-size: 2rem; }
+	.mypapers-hero p { font-size: 1rem; }
+	.mypapers-actions { flex-direction: column; gap: 0.75rem; }
+	.refresh-papers-btn, .clear-all-btn { width: 100%; }
+	.papers-grid { grid-template-columns: 1fr; gap: 1rem; padding: 1rem 0; }
+	.paper-card-mypapers { padding: 1rem; }
+	.paper-card-actions { flex-direction: column; gap: 0.5rem; }
+	.paper-action-btn { width: 100%; }
+}
+
+@media (max-width: 480px) {
+	.mypapers-hero { padding: 1.5rem 0 1rem; }
+	.mypapers-hero h1 { font-size: 1.75rem; }
+	.mypapers-icon-large { width: 60px; height: 60px; font-size: 1.5rem; }
+	.paper-card-mypapers { padding: 0.75rem; }
+	.paper-card-title { font-size: 1rem; }
+	.paper-card-meta { font-size: 0.8rem; }
+	.paper-action-btn { padding: 0.5rem 0.75rem; font-size: 0.8rem; }
+}
\ No newline at end of file