style.css

/* Use Inter font */
html { font-family: 'Inter', sans-serif; }
@supports (font-variation-settings: normal) {
    html { font-family: 'Inter var', sans-serif; }
}

/* --- Base Futuristic Theme --- */
body {
    /* background-color: #0f172a; */ /* slate-900 - Old background */
    background-color: #02040a; /* Deepest space blue/black */
    background-image: radial-gradient(ellipse at center, 
        #1a2035 0%,  /* Inner glow - dark indigo */
        #0f172a 40%, /* Mid-tone slate/blue */
        #02040a 75%  /* Fading to deep space */
    );
    background-attachment: fixed; /* Keeps the gradient fixed during scroll */
    color: #cbd5e1; /* slate-300 */
    overflow: hidden; /* Prevent body scroll, manage scrolling in sections */
    min-height: 100vh; /* Ensure gradient covers full viewport height */
}

/* Apply justify-center to main-content when CTA is active */
#main-content.justify-center-cta-active {
    justify-content: center;
}

/* --- Layout Heights --- */
:root {
    --history-panel-expanded-height: 12rem; /* 192px */
    --history-panel-collapsed-height: 0rem; /* Can be 0 or a small value for a visible collapsed bar */
    --history-panel-toggle-button-height: 2.5rem; /* Height of the toggle button area */
    --history-panel-current-height: var(--history-panel-collapsed-height); /* Initial state: collapsed */
}

#main-content { 
    height: calc(100vh - var(--history-panel-current-height) - var(--history-panel-toggle-button-height));
    overflow-y: auto;
    width: 100%; 
    margin-left: 0; 
    transition: height 0.3s ease-in-out;
}

/* Hide scrollbar for specific elements */
#history-panel::-webkit-scrollbar { display: none; } 
#history-panel { -ms-overflow-style: none; scrollbar-width: none; }


/* Custom scrollbar for main content */
#main-content::-webkit-scrollbar { width: 8px; }
#main-content::-webkit-scrollbar-track { background: rgba(51, 65, 85, 0.5); border-radius: 10px; }
#main-content::-webkit-scrollbar-thumb { background: #475569; border-radius: 10px; }
#main-content::-webkit-scrollbar-thumb:hover { background: #64748b; }

/* History Panel Scrollbar */
#history-panel::-webkit-scrollbar { height: 6px; background-color: rgba(30, 41, 59, 0.5); }
#history-panel::-webkit-scrollbar-thumb { background-color: #475569; border-radius: 3px; }
#history-panel::-webkit-scrollbar-thumb:hover { background-color: #64748b; }
#history-panel { scrollbar-width: thin; scrollbar-color: #475569 rgba(30, 41, 59, 0.5); }

/* Code output styling in config modal */
#code-output-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem; /* mb-2 */
}
#copy-code-button {
    background-color: #334155; /* slate-700 */
    color: #94a3b8; /* slate-400 */
    padding: 0.25rem 0.75rem; /* py-1 px-3 */
    font-size: 0.75rem; /* text-xs */
    border-radius: 0.375rem; /* rounded-md */
    transition: background-color 0.2s, color 0.2s;
    line-height: 1; /* Ensure icon is vertically centered */
}
#copy-code-button:hover {
    background-color: #475569; /* slate-600 */
    color: #cbd5e1; /* slate-300 */
}
 #copy-code-button.copied {
    background-color: #059669; /* emerald-600 */
    color: white;
}

#export-code-button {
    background-color: #334155; /* slate-700 */
    color: #94a3b8; /* slate-400 */
    padding: 0.25rem 0.75rem; /* py-1 px-3 */
    font-size: 0.75rem; /* text-xs */
    border-radius: 0.375rem; /* rounded-md */
    transition: background-color 0.2s, color 0.2s, opacity 0.2s;
    line-height: 1; /* Ensure icon is vertically centered */
}
#export-code-button:hover:not(:disabled) {
    background-color: #475569; /* slate-600 */
    color: #cbd5e1; /* slate-300 */
}
#export-code-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#code-output-container { 
    margin-top: 0.25rem; 
    height: 300px; 
    overflow-y: auto; 
    background-color: #020617; 
    border: 1px solid #334155; 
    border-radius: 0.375rem; 
    padding: 1rem; 
    scrollbar-width: thin;
    scrollbar-color: #475569 rgba(30, 41, 59, 0.5);
}
#code-output-container::-webkit-scrollbar {
    width: 6px; display: block;
}
#code-output-container::-webkit-scrollbar-track {
    background: rgba(51, 65, 85, 0.3); border-radius: 3px;
}
#code-output-container::-webkit-scrollbar-thumb {
    background: #475569; border-radius: 3px;
}
#code-output-container::-webkit-scrollbar-thumb:hover {
    background: #64748b;
}

#code-output { 
    font-family: monospace;
    color: #94a3b8; 
    white-space: pre-wrap;
    word-wrap: break-word;
}
#code-output code.language-html {
    font-size: 9pt;
    color: #e2e8f0; 
}

/* Preview frame styling */
.preview-frame {
    width: 100%; height: 100%; flex-grow: 1; border: none;
    background-color: #ffffff; 
}
.preview-loader {
    position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(15, 23, 42, 0.7); 
    display: flex; align-items: center; justify-content: center; z-index: 10;
}

/* Spinner */
.spinner {
    width: 2rem; height: 2rem;
    border: 4px solid rgba(71, 85, 105, 0.3); 
    border-left-color: #22d3ee; /* cyan-400 */
    border-radius: 50%; animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Refinement loading */
#refinement-loading-indicator {
    position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%);
    background-color: rgba(15, 23, 42, 0.85); 
    backdrop-filter: blur(5px); color: #e2e8f0; 
    padding: 1rem 1.5rem; border-radius: 0.5rem; 
    z-index: 1000; display: none; align-items: center; gap: 0.75rem;
    border: 1px solid #334155; box-shadow: 0 0 20px rgba(34, 211, 238, 0.2);
}
#refinement-loading-indicator svg { color: #22d3ee; }

/* Slider value */
#interval-value, #num-variations-value { font-weight: 600; color: #22d3ee; }

/* Config Button (replaces sidebar toggle) */
#top-left-controls {
    position: fixed; top: 1rem; left: 1rem; z-index: 60; 
    display: flex;
    gap: 0.5rem; /* Space between buttons */
}

#config-button, #new-button, #show-prompt-modal-button {
    background-color: rgba(51, 65, 85, 0.7); 
    backdrop-filter: blur(5px); border-radius: 9999px; padding: 0.5rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3); cursor: pointer;
    border: 1px solid #475569; 
    transition: background-color 0.2s, color 0.2s, box-shadow 0.2s;
    display: flex; /* Center icon */
    align-items: center;
    justify-content: center;
}
#config-button:hover, #new-button:hover, #show-prompt-modal-button:hover {
    background-color: rgba(71, 85, 105, 0.8); 
    box-shadow: 0 0 10px rgba(34, 211, 238, 0.2);
}
#config-button svg, #new-button svg, #show-prompt-modal-button svg {
    width: 1.25rem; height: 1.25rem; color: #94a3b8; transition: color 0.2s;
}
#config-button:hover svg, #new-button:hover svg, #show-prompt-modal-button:hover svg {
    color: #22d3ee; 
}


/* Full Screen Overlay */
#fullscreen-overlay {
    position: fixed; top: 0; left: 0; width: 100vw; height: 100vh;
    background-color: rgba(15, 23, 42, 0.95); 
    backdrop-filter: blur(8px); z-index: 900; 
    display: flex; flex-direction: column;
    align-items: center; /* Center iframe horizontally */
    justify-content: center; /* Center iframe vertically */
    padding: 1rem; box-sizing: border-box; opacity: 0; visibility: hidden;
    transition: opacity 0.3s ease-in-out, visibility 0.3s ease-in-out;
}
#fullscreen-overlay.visible { opacity: 1; visibility: visible; }
#fullscreen-iframe {
    /* flex-grow: 1; width: 100%; height: 100%; Removed to set fixed mobile dimensions */
    width: 375px;  /* Typical mobile width */
    height: 750px; /* Typical mobile height, adjust as desired */
    max-width: 90vw; /* Ensure it doesn't overflow very small screens too much */
    max-height: 85vh; /* Ensure it doesn't overflow very small screens too much */
    border: 1px solid #334155; 
    border-radius: 0.75rem; /* Rounded corners like other previews */
    background-color: white; 
    box-shadow: 0 10px 30px rgba(0,0,0,0.5); /* Enhanced shadow for fullscreen focus */
    /* margin-top: 3rem; Removed as flex centering handles positioning */
}
#exit-fullscreen-btn {
    position: absolute; top: 1.5rem; right: 1.5rem; z-index: 955; /* Above nav buttons */
    background-color: #ef4444; color: white;
}
#exit-fullscreen-btn:hover { background-color: #dc2626; }

/* Fullscreen History Navigation Buttons */
#fullscreen-history-nav {
    position: absolute;
    top: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 950; /* Below exit button, above iframe */
    display: none; /* Hidden by default */
    gap: 1rem;
}
#fullscreen-history-nav.visible {
     display: flex; /* Show when needed */
}
#fullscreen-history-nav button {
    background-color: rgba(51, 65, 85, 0.8); /* slate-700/80 */
    color: #cbd5e1; /* slate-300 */
    border: 1px solid #64748b; /* slate-500 */
    padding: 0.5rem 1rem; /* py-2 px-4 */
    border-radius: 0.375rem; /* rounded-md */
    font-size: 0.875rem; /* text-sm */
    font-weight: 500;
    transition: background-color 0.2s, border-color 0.2s, color 0.2s;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}
 #fullscreen-history-nav button:hover:not(:disabled) {
    background-color: rgba(71, 85, 105, 0.9); /* slate-600/90 */
    border-color: #94a3b8; /* slate-400 */
    color: #fff;
}
 #fullscreen-history-nav button:disabled {
    background-color: rgba(51, 65, 85, 0.5);
    border-color: #475569; /* slate-600 */
    color: #64748b; /* slate-500 */
    cursor: not-allowed;
    opacity: 0.6;
}


body.fullscreen-active #top-left-controls { opacity: 0; pointer-events: none; }
body.fullscreen-active #main-content { overflow: hidden; }
body.fullscreen-active #history-panel { display: none; } 


/* Perspective Grid Styles (for 4 variations) */
#perspective-viewport {
    flex-grow: 1; min-height: 0; display: flex;
    justify-content: center; /* Center the content (preview-grid-wrapper) horizontally */
    align-items: center; /* Center the content (preview-grid-wrapper) vertically */
    padding: 1rem; /* Increased padding for better spacing of mobile items */
    /* perspective: 1500px; Perspective is not needed for mobile layout */
    overflow-x: auto; /* Enable horizontal scrolling for mobile previews */
    overflow-y: hidden;
}
#preview-grid-wrapper { 
    display: flex; /* Changed from grid to flex for horizontal layout */
    /* width: 98%; max-width: 1200px; */ /* Width will be determined by content */
    /* height: 95%; */ /* Height will be determined by content / item size */
    /* transition: transform 0.5s ease-out; */ /* Transform transitions not needed for mobile layout */
    gap: 1.5rem; /* Keep gap between items */
    padding-bottom: 1rem; /* Add padding at the bottom for scrollbar visibility */
}

/* New class for mobile preview layout (replaces grid-mode and single-mode behavior) */
.mobile-preview-layout {
    display: flex;
    flex-direction: row;
    align-items: flex-start; /* Align items to the top */
    gap: 1.5rem;
    height: auto; /* Let height be determined by content */
    width: max-content; /* Allow the wrapper to grow with items */
}

#preview-grid-wrapper.grid-mode { /* This class is no longer primarily used for layout, but styles might be referenced */
    /* grid-template-columns: repeat(2, 1fr); */
    /* grid-template-rows: repeat(2, 1fr); gap: 1.5rem;  */
    /* transform-style: preserve-3d; */
    /* transform: rotateX(10deg) rotateY(0deg) scale(0.95); */
}
 #preview-grid-wrapper.single-mode { /* This class is still used for single large preview */
    grid-template-columns: 1fr;
    grid-template-rows: 1fr; gap: 0;
    transform: none; 
    width: 100%; height: 100%; max-width: none; aspect-ratio: unset;
    display: grid; /* Revert to grid for single mode */
    place-items: center; /* Center the single preview item */
    padding-bottom: 0; /* Reset padding */
}


.preview-item-perspective { 
    background-color: rgba(51, 65, 85, 0.6); 
    backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
    border-radius: 0.75rem; 
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3), 0 0 5px rgba(34, 211, 238, 0.1);
    display: flex; flex-direction: column; overflow: hidden;
    /* transform-style: preserve-3d; Removed */
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    border: 1px solid #475569; 
    /* height: 100%; Removed, fixed height for mobile form factor */
    width: 360px; /* Further increased width for larger mobile preview */
    height: 720px; /* Further increased height for portrait mobile aspect ratio */
    flex-shrink: 0; /* Prevent items from shrinking in flex layout */
}
.preview-item-perspective:hover:not(.selected) {
    transform: translateY(-8px) scale(1.03); /* Removed translateZ and 3D rotation */
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.4), 0 0 15px rgba(34, 211, 238, 0.2);
    border-color: #64748b; 
}
.preview-item-perspective.selected { 
    border-color: #22d3ee; 
    transform: scale(1.06); /* Removed translateZ and 3D rotation */
    box-shadow: 0 15px 40px rgba(34, 211, 238, 0.3), 0 0 25px rgba(34, 211, 238, 0.4), inset 0 0 10px rgba(34, 211, 238, 0.2);
    z-index: 5;
}
.preview-header {
    padding: 0.6rem 1rem; border-bottom: 1px solid #475569; 
    display: flex; justify-content: space-between; align-items: center;
    flex-shrink: 0; background-color: rgba(71, 85, 105, 0.5);
}
.preview-header-title {
    font-size: 0.9rem; font-weight: 600; color: #e2e8f0; 
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.preview-header-buttons { display: flex; align-items: center; gap: 0.5rem; }
.preview-header-buttons button, .preview-header-buttons .fullscreen-btn {
    padding: 0.25rem 0.5rem; border-radius: 0.375rem; 
    transition: background-color 0.2s, color 0.2s, box-shadow 0.2s;
}
.preview-header-buttons .fullscreen-btn { color: #94a3b8; }
.preview-header-buttons .fullscreen-btn:hover:not(:disabled) {
    color: #22d3ee; background-color: rgba(51, 65, 85, 0.7);
}
.preview-header-buttons .fullscreen-btn:disabled { color: #475569; cursor: not-allowed; }
.preview-body {
    position: relative; flex-grow: 1; min-height: 0;
    display: flex; overflow: hidden; 
    align-items: center; /* Center iframe vertically */
    justify-content: center; /* Center iframe horizontally */
}

/* Style for the iframe when in single large preview mode */
#preview-grid-wrapper.single-mode iframe#single-large-preview-frame {
    height: 80%; /* Use 80% of available vertical space in its container */
    aspect-ratio: 1 / 2; /* Maintain mobile aspect ratio */
    max-width: 425px; /* Cap width to prevent it getting too wide */
    max-height: 850px; /* Cap height for an absolute maximum */
    /* width will be determined by height and aspect-ratio, up to max-width */
    border: 1px solid #475569; /* Consistent border */
    border-radius: 0.75rem; /* Consistent radius */
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3), 0 0 5px rgba(34, 211, 238, 0.1); /* Consistent shadow */
    background-color: #ffffff; /* Ensure background for the iframe */
}

.single-preview-item {
    width: 100%; height: 100%;
    /* Removed fixed background and border, will be on the iframe if needed or use styles from preview-item-perspective */
}


/* Futuristic input/select styles */
.futuristic-input, .futuristic-select {
    background-color: rgba(30, 41, 59, 0.8); border: 1px solid #475569; 
    color: #e2e8f0; border-radius: 0.375rem; 
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.2);
    transition: border-color 0.2s, box-shadow 0.2s;
    padding: 0.5rem 0.75rem; 
}
.futuristic-input::placeholder { color: #64748b; }
.futuristic-input:focus, .futuristic-select:focus {
    outline: none; border-color: #22d3ee; 
    box-shadow: 0 0 0 2px rgba(34, 211, 238, 0.3), inset 0 1px 2px rgba(0,0,0,0.2);
}
.futuristic-select {
     -webkit-appearance: none;
     -moz-appearance: none;
     appearance: none;
     background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
     background-repeat: no-repeat;
     background-position: right 0.5rem center;
     background-size: 1.2em 1.2em;
     padding-right: 2.5rem; 
}


/* Futuristic button styles */
.futuristic-button {
    background-color: #0e7490; color: #f0f9ff; 
    font-weight: 500; border-radius: 0.375rem; 
    transition: background-color 0.2s, box-shadow 0.2s, transform 0.1s;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2), 0 0 0 0 rgba(34, 211, 238, 0.0);
}
.futuristic-button:hover:not(:disabled) {
    background-color: #0891b2; 
    box-shadow: 0 4px 8px rgba(0,0,0,0.3), 0 0 10px 2px rgba(34, 211, 238, 0.3);
    transform: translateY(-1px);
}
.futuristic-button:active:not(:disabled) {
    transform: translateY(0px);
    box-shadow: 0 2px 5px rgba(0,0,0,0.2), 0 0 5px 1px rgba(34, 211, 238, 0.2);
}
.futuristic-button:disabled {
    background-color: #334155; color: #64748b; 
    cursor: not-allowed; opacity: 0.7;
}
.futuristic-button.selected-state { 
     background-color: #059669; 
}
.futuristic-button.selected-state:hover:not(:disabled) {
    background-color: #047857; 
    box-shadow: 0 4px 8px rgba(0,0,0,0.3), 0 0 10px 2px rgba(16, 185, 129, 0.3);
}


/* Range slider styling */
input[type="range"].futuristic-slider {
    -webkit-appearance: none; appearance: none; width: 100%; height: 8px;
    background: #334155; border-radius: 5px; outline: none;
    opacity: 0.9; transition: opacity .2s;
}
input[type="range"].futuristic-slider:hover { opacity: 1; }
input[type="range"].futuristic-slider::-webkit-slider-thumb {
    -webkit-appearance: none; appearance: none; width: 18px; height: 18px;
    background: #22d3ee; border-radius: 50%; cursor: pointer;
    border: 2px solid #0f172a; box-shadow: 0 0 5px rgba(34, 211, 238, 0.5);
}
input[type="range"].futuristic-slider::-moz-range-thumb {
    width: 18px; height: 18px; background: #22d3ee; 
    border-radius: 50%; cursor: pointer; border: 2px solid #0f172a; 
    box-shadow: 0 0 5px rgba(34, 211, 238, 0.5);
}

/* --- History Panel (Bottom) --- */
#history-panel-controls {
    height: var(--history-panel-toggle-button-height);
    display: flex;
    align-items: center;
    justify-content: center; /* Center the group */
    gap: 1rem; /* Space between nav arrows and toggle */
    background-color: rgba(15, 23, 42, 0.9); /* Match history panel bg */
    border-top: 1px solid #334155; /* Match history panel border */
    position: relative; /* For potential absolute positioning of button if needed or pseudo-elements */
    z-index: 51; /* Above history panel content, below modals */
}

#history-toggle-button {
    background-color: rgba(51, 65, 85, 0.7); /* slate-700 with alpha */
    border: 1px solid #475569; /* slate-600 */
    border-radius: 9999px; /* pill shape */
    padding: 0.375rem; /* py-1.5 px-1.5 (adjust based on icon size) */
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #94a3b8; /* slate-400 for icon */
    transition: background-color 0.2s, color 0.2s, box-shadow 0.2s;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

#history-toggle-button:hover {
    background-color: rgba(71, 85, 105, 0.8);
    color: #cbd5e1; /* slate-300 */
    box-shadow: 0 0 10px rgba(34, 211, 238, 0.2);
}

#history-toggle-button svg {
    width: 1.25rem; /* w-5 */
    height: 1.25rem; /* h-5 */
}

#history-panel {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--history-panel-current-height); /* Use CSS variable */
    background-color: rgba(15, 23, 42, 0.9); 
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    /* border-top: 1px solid #334155; Removed as controls has it now */ 
    padding: 1rem 2rem; /* Add more horizontal padding for fan effect */
    z-index: 50; 
    overflow-x: auto;
    overflow-y: hidden;
    display: flex;
    align-items: center; 
    /* gap: 1rem; Remove fixed gap, overlaps will be handled by transforms */
    transition: height 0.3s ease-in-out, padding 0.3s ease-in-out, opacity 0.3s ease-in-out;
    opacity: 1;
    perspective: 1000px; /* Add perspective for 3D transforms */
}

#history-panel.history-collapsed {
    /* height is controlled by --history-panel-current-height via JS */
    padding-top: 0;
    padding-bottom: 0;
    opacity: 0;
    overflow: hidden; /* Ensure content is clipped during collapse */
}

/* Hide thumbnails when panel is collapsed to prevent interaction/layout issues */
#history-panel.history-collapsed .history-thumbnail-item,
#history-panel.history-collapsed #history-panel-placeholder {
    display: none;
}

.history-thumbnail-item {
    position: relative; /* Keep for z-index */
    flex-shrink: 0; 
    width: 6rem; /* Adjusted width for portrait aspect ratio */ 
    height: 9rem; /* Adjusted height for portrait aspect ratio */ 
    background-color: rgba(51, 65, 85, 0.5); 
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid #475569; 
    border-radius: 0.5rem; 
    box-shadow: 0 6px 18px rgba(0,0,0,0.35), 
                        inset 0 0 8px rgba(34, 211, 238, 0.15),
                        0 0 2px rgba(34,211,238,0.1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    /* transform-style: preserve-3d; Remove this */
    /* transform: perspective(600px) rotateY(-8deg) rotateX(3deg) translateZ(-15px); Remove static transform */
    transition: transform 0.7s cubic-bezier(0.25, 0.8, 0.25, 1), 
                        box-shadow 0.3s cubic-bezier(0.25, 0.8, 0.25, 1),
                        border-color 0.3s ease,
                        z-index 0.7s ease; /* Add z-index transition */
    /* Add margin to handle potential overlap calculations if needed, maybe negative */
    margin-left: -30px; /* Example: Pull items closer together */ 
}

/* Pull first item back to the left */
.history-thumbnail-item:first-child {
    margin-left: 0;
}

.history-thumbnail-item:hover {
    /* transform: perspective(600px) rotateY(-3deg) rotateX(1deg) translateZ(0px) scale(1.08); */ /* Remove old hover transform */
    transform: translateY(-15px) scale(1.15) rotate(0deg); /* Bring up, scale, and un-rotate on hover */
    box-shadow: 0 15px 40px rgba(0,0,0,0.5), 
                        inset 0 0 12px rgba(34, 211, 238, 0.25),
                        0 0 15px rgba(34,211,238,0.4);
    border-color: #22d3ee; 
    z-index: 100; /* Ensure hovered item is on top */
}
.history-thumbnail-item.active-history-item {
    border-color: #22d3ee; 
    /* transform: perspective(600px) rotateY(-4deg) rotateX(2deg) translateZ(0px) scale(1.06); */ /* Remove old active transform */
    box-shadow: 0 10px 30px rgba(34, 211, 238, 0.3), 
                        inset 0 0 15px rgba(34, 211, 238, 0.3),
                        0 0 10px rgba(34,211,238,0.4);
    /* Active item might need slightly different base transform/z-index set by JS */
    z-index: 50; /* Ensure active is above others but below hover */
}
.history-thumbnail-preview-container {
    width: 100%;
    height: calc(100% - 2rem); 
    overflow: hidden;
    position: relative;
    border-bottom: 1px solid #334155;
    cursor: pointer; 
}
.history-thumbnail-preview { 
    width: 200%; /* Adjusted for new scale */ 
    height: 200%; /* Adjusted for new scale */
    transform: scale(0.5); /* Increased scale to zoom in further */
    transform-origin: 0 0;
    border: none;
    pointer-events: none; 
    background-color: #fff; 
}
.history-thumbnail-title {
    font-size: 0.65rem; 
    color: #cbd5e1; 
    padding: 0.25rem 0.5rem; 
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.25rem; 
    cursor: pointer; 
}
.history-thumbnail-fullscreen-btn {
    position: absolute;
    top: 0.25rem; 
    right: 0.25rem; 
    padding: 0.15rem; 
    border-radius: 0.25rem; 
    background-color: rgba(30, 41, 59, 0.6); 
    color: #94a3b8; 
    opacity: 0; 
    transition: opacity 0.2s ease-in-out, background-color 0.2s, color 0.2s;
    z-index: 15; 
    cursor: pointer;
}
.history-thumbnail-item:hover .history-thumbnail-fullscreen-btn {
    opacity: 1; 
}
.history-thumbnail-fullscreen-btn:hover {
     background-color: rgba(51, 65, 85, 0.8); 
     color: #e2e8f0; 
}
.history-thumbnail-fullscreen-btn svg {
    width: 0.75rem; 
    height: 0.75rem; 
}

#history-panel-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    width: 100%;
    color: #64748b; 
    font-size: 0.875rem; 
}

/* --- Modal Animation Effects --- */
@keyframes fadeInDistort {
    from {
        opacity: 0;
        transform: scale(0.9) skewY(3deg);
    }
    to {
        opacity: 1;
        transform: scale(1) skewY(0deg);
    }
}

@keyframes fadeOutDistort {
    from {
        opacity: 1;
        transform: scale(1) skewY(0deg);
    }
    to {
        opacity: 0;
        transform: scale(0.95) skewY(-2deg);
    }
}

.modal-anim-fade-in {
    animation: fadeInDistort 0.4s cubic-bezier(0.25, 0.8, 0.25, 1) forwards;
}

.modal-anim-fade-out {
    animation: fadeOutDistort 0.3s cubic-bezier(0.75, 0.2, 0.75, 0.2) forwards;
}


/* --- Modals (Prompt & Config) --- */
.modal-overlay { /* Common class for overlays */
    position: fixed;
    inset: 0; 
    background-color: rgba(15, 23, 42, 0.8); 
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 1000; 
    display: none; 
    align-items: center;
    justify-content: center;
    padding: 2rem;
    opacity: 0; /* Start transparent for animation */
}
.modal-overlay.visible {
    display: flex;
    opacity: 1;
}
.modal-content { /* Common class for content box */
    background-color: #1e293b; 
    padding: 1.5rem 2rem; 
    border-radius: 0.75rem; 
    border: 1px solid #334155; 
    box-shadow: 0 10px 30px rgba(0,0,0,0.4);
    width: 100%;
    max-width: 42rem; 
    display: flex;
    flex-direction: column;
    gap: 1rem; 
}
#modal-user-prompt { /* Specific to prompt modal */
    min-height: 100px; 
    resize: vertical; 
}
.modal-button-secondary {
     background-color: #334155; 
     color: #cbd5e1; 
     border: 1px solid #475569; 
}
.modal-button-secondary:hover:not(:disabled) {
     background-color: #475569; 
     border-color: #64748b; 
     color: #fff;
}

.history-nav-button {
    background-color: transparent; /* Make nav buttons less prominent */
    border: none;
    border-radius: 9999px; 
    padding: 0.375rem; 
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #64748b; /* slate-500 for icon, less prominent */
    transition: background-color 0.2s, color 0.2s, box-shadow 0.2s;
}

.history-nav-button:hover:not(:disabled) {
    background-color: rgba(51, 65, 85, 0.7);
    color: #94a3b8; /* slate-400 */
}

.history-nav-button:disabled {
    color: #334155; /* slate-700 - very faded */
    cursor: not-allowed;
    opacity: 0.5;
}

/* Style for truncated prompt subtitle to indicate clickability */
#main-content-subtitle.prompt-truncated {
    cursor: pointer;
    text-decoration: underline dotted rgba(203, 213, 225, 0.5); /* slate-300 dotted underline */
    transition: text-decoration-color 0.2s ease;
}
#main-content-subtitle.prompt-truncated:hover {
    text-decoration-color: rgba(34, 211, 238, 0.8); /* cyan-400 */
}

/* Ensure prompt display modal text area is styled correctly */
#full-prompt-text {
    scrollbar-width: thin;
    scrollbar-color: #475569 rgba(30, 41, 59, 0.5);
}
#full-prompt-text::-webkit-scrollbar {
    width: 6px;
}
#full-prompt-text::-webkit-scrollbar-track {
    background: rgba(51, 65, 85, 0.3);
    border-radius: 3px;
}
#full-prompt-text::-webkit-scrollbar-thumb {
    background: #475569;
    border-radius: 3px;
}
#full-prompt-text::-webkit-scrollbar-thumb:hover {
    background: #64748b;
}

/* --- Initial Setup CTA Styles --- */
#initial-setup-cta {
    /* Default to flex for when it becomes visible */
    /* flex-grow is added by JS when active */
    background-color: rgba(23, 37, 60, 0.75); /* Slightly bluer, less opaque than modals */
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid #334155; /* slate-700 */
    border-radius: 0.75rem; /* rounded-xl */
    box-shadow: 0 15px 35px rgba(0,0,0,0.3), inset 0 0 0 1px rgba(71, 85, 105, 0.4); /* slate-600 for inset border */
    padding: 2rem; /* Increased padding */
    width: 100%;
    max-width: 48rem; /* Consistent max width, e.g., max-w-3xl */
    margin-left: auto;
    margin-right: auto; 

    opacity: 0;
    transform: translateY(30px) scale(0.97);
    transition: opacity 0.5s cubic-bezier(0.25, 0.8, 0.25, 1), transform 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
    pointer-events: none; 
}

#initial-setup-cta.active-cta {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

#gemini-logo-initial-cta {
    height: 40px; /* Adjust as needed */
    margin-bottom: 1.5rem; /* Space below the logo */
    opacity: 0.85; /* Slightly see-through to blend a bit */
}

#initial-api-key-input {
    /* Uses .futuristic-input, can add specifics if needed */
     box-shadow: 0 0 15px rgba(34, 211, 238, 0.1); /* Subtle glow on input */
}

.example-prompt-button {
    background-color: rgba(51, 65, 85, 0.7); /* slate-700 with alpha */
    backdrop-filter: blur(5px);
    border: 1px solid #475569; /* slate-600 */
    color: #cbd5e1; /* slate-300 */
    padding: 0.6rem 1.2rem; /* Adjusted padding */
    border-radius: 9999px; /* pill shape */
    font-size: 0.875rem; /* text-sm */
    font-weight: 500;
    cursor: pointer;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);

    opacity: 0;
    transform: translateY(15px);
    /* Add opacity and transform to existing transition */
    transition: background-color 0.2s, color 0.2s, box-shadow 0.2s, transform 0.35s cubic-bezier(0.25, 0.8, 0.25, 1), opacity 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.example-prompt-button.visible {
    opacity: 1;
    transform: translateY(0);
}

.example-prompt-button:hover {
    background-color: rgba(71, 85, 105, 0.85); /* slate-600 with alpha */
    color: #e2e8f0; /* slate-200 */
    box-shadow: 0 0 12px rgba(34, 211, 238, 0.25), 0 4px 8px rgba(0,0,0,0.3);
    transform: translateY(-2px); /* Keep existing translateY but ensure it combines with the initial one */
}

.example-prompt-button.visible:hover {
    transform: translateY(-2px); /* Explicitly for visible state */
}


.example-prompt-button:active {
    transform: translateY(0px); /* Reset or slightly depress */
    box-shadow: 0 2px 5px rgba(0,0,0,0.2), 0 0 5px 1px rgba(34, 211, 238, 0.1);
}

.example-prompt-button.visible:active {
    transform: translateY(0px);
}

/* Variation Navigation Buttons (Left/Right Arrows for Mobile Previews) */
.variation-nav-button {
    background-color: rgba(30, 41, 59, 0.7); /* slate-800 with alpha */
    backdrop-filter: blur(5px);
    border: 1px solid #475569; /* slate-600 */
    color: #cbd5e1; /* slate-300 */
    border-radius: 9999px; /* pill shape */
    padding: 0.75rem; /* p-3 */
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s, opacity 0.2s, transform 0.2s;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.variation-nav-button:hover:not(:disabled) {
    background-color: rgba(51, 65, 85, 0.85); /* slate-700 with alpha */
    color: #e2e8f0; /* slate-200 */
    transform: scale(1.1);
}

.variation-nav-button:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    /* transform: scale(1); /* Ensure no transform on disabled hover */
}