style.css

/* FontAwesome 아이콘 포함 */
@import url("https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css");

:root {
    --primary-color: #FF7F00;
    --secondary-color: #ff9a8b;
    --accent-color: #FF6B6B;
    --background-color: #FFFFFF;
    --card-bg: #ffffff;
    --text-color: #334155;
    --border-radius: 18px;
    --shadow: 0 8px 30px rgba(251, 127, 13, 0.08);
}

body {
    font-family: 'Pretendard', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: var(--background-color);
    color: var(--text-color);
}

.container {
    max-width: 1200px;
    margin: 20px auto;
    padding: 20px;
    background-color: white;
    box-shadow: var(--shadow);
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
}

h1, h2, h3 {
    color: #2c3e50;
    text-align: center;
}

p {
    text-align: center;
    margin-bottom: 20px;
}

/* 헤더 섹션 스타일 */
.container > h1 {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 2rem;
    border-radius: 15px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
    font-size: 2.5rem;
    font-weight: 700;
}

.container > p {
    background-color: #FFF6F0;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(255, 127, 0, 0.1);
    color: var(--text-color);
    font-size: 1.1rem;
}

.upload-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    margin-bottom: 20px;
    gap: 20px;
}

.upload-box {
    flex: 1;
    min-width: 300px;
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    padding: 20px;
    text-align: center;
    transition: background-color 0.3s;
    background-color: #FFF6F0;
}

.upload-box:hover {
    background-color: #FFF0E6;
}

.upload-label {
    display: block;
    font-weight: bold;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.file-input {
    display: none;
}

.upload-button {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 10px 20px;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
    box-shadow: 0 4px 8px rgba(251, 127, 13, 0.25);
}

.upload-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(251, 127, 13, 0.3);
}

/* 작업 영역 래퍼 */
.workspace-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 20px;
}

/* 캔버스와 컨트롤 패널들을 묶는 영역 */
.canvas-and-controls {
    flex: 3;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.canvas-container {
    position: relative;
    width: 100%;
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

#canvas {
    display: block;
    width: 100%;
    height: auto;
    background-color: #ffffff;
    cursor: default;
}

/* 컨트롤 패널들을 모아두는 사이드바 역할 */
.control-panel-sidebar {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.control-group {
    display: flex;
    flex-direction: column;
    border: 1px solid rgba(255, 127, 0, 0.2);
    padding: 15px;
    border-radius: var(--border-radius);
    background-color: #FFF6F0;
    box-shadow: var(--shadow);
}

.control-group h3 {
    margin: 0 0 15px 0;
    font-size: 1.1rem;
    text-align: center;
    width: 100%;
    color: var(--primary-color);
    font-weight: 700;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 각 컨트롤 그룹 아이콘 추가 */
.control-group h3::before {
    font-family: "Font Awesome 6 Free";
    margin-right: 10px;
    color: var(--primary-color);
    font-weight: 900;
}

.control-group:nth-of-type(1) h3::before {
    content: "\f547"; /* 크기 조절 아이콘 */
}

.control-group:nth-of-type(2) h3::before {
    content: "\f03e"; /* 이미지 아이콘 */
}

#layers-panel h3::before {
    content: "\f5fd"; /* 레이어 아이콘 */
}

.slider-container {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 8px 0;
    width: 100%;
    padding: 0 5px;
    box-sizing: border-box;
}

.slider-container label {
    font-weight: bold;
    min-width: 50px;
    text-align: left;
    flex-shrink: 0;
    color: #444;
}

.slider-container input[type="range"] {
    flex-grow: 1;
    width: auto;
    margin: 0 5px;
    accent-color: var(--primary-color);
}

.slider-container .value-display {
    min-width: 40px;
    text-align: right;
    flex-shrink: 0;
    font-weight: 600;
    color: var(--primary-color);
}

/* 레이어 목록 스타일 */
.layers-list {
    width: 100%;
    max-height: 150px;
    overflow-y: auto;
    border: 1px solid rgba(255, 127, 0, 0.1);
    border-radius: var(--border-radius);
    background-color: white;
}

.layer-item {
    padding: 10px;
    border-bottom: 1px solid #eee;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.layer-item:last-child { border-bottom: none; }
.layer-item:hover { background-color: #FFF0E6; }
.layer-item.active { background-color: rgba(255, 127, 0, 0.1); font-weight: bold; color: var(--primary-color); }
.layer-name { flex-grow: 1; padding-left: 5px; }
.layer-controls { display: flex; gap: 5px; }
.layer-button {
    background-color: white;
    border: 1px solid var(--primary-color);
    border-radius: 10px;
    padding: 2px 8px;
    cursor: pointer;
    font-size: 11px;
    color: var(--primary-color);
    transition: all 0.2s ease;
}
.layer-button:hover { 
    background-color: var(--primary-color); 
    color: white;
}

/* 필터 패널 스타일 */
.filter-panel {
    padding: 15px;
    border: 1px solid rgba(255, 127, 0, 0.2);
    border-radius: var(--border-radius);
    background-color: #FFF6F0;
    box-shadow: var(--shadow);
}

.filter-panel h3 {
    margin: 0 0 15px 0;
    text-align: center;
    color: var(--primary-color);
    font-weight: 700;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.filter-panel h3::before {
    content: "\f06e"; /* 필터 아이콘 */
    font-family: "Font Awesome 6 Free";
    margin-right: 10px;
    color: var(--primary-color);
    font-weight: 900;
}

.filter-sliders {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 15px;
}

.filter-slider-container {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 100%;
    padding: 0 5px;
    box-sizing: border-box;
}

.filter-slider-container label {
    font-size: 14px;
    margin-bottom: 5px;
    text-align: left;
    font-weight: 600;
    color: #444;
}

.large-slider {
    width: 100%;
    height: 20px;
    accent-color: var(--primary-color);
}

.filter-slider-container .value-display {
    text-align: right;
    font-weight: bold;
    color: var(--primary-color);
}

.filter-buttons {
    display: flex;
    justify-content: center;
    margin-top: 15px;
}

#reset-filter-btn {
    width: auto;
    padding: 8px 15px;
    flex-grow: 1;
    max-width: 200px;
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: white;
    border-radius: 30px;
    border: none;
    font-weight: 600;
    box-shadow: 0 4px 8px rgba(231, 76, 60, 0.25);
    transition: all 0.3s ease;
}

#reset-filter-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(231, 76, 60, 0.3);
}

/* 미리보기 섹션 */
.preview-section {
    flex: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 0;
}

.preview-container {
    width: 100%;
    margin-top: 0;
    display: none;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    background-color: #FFF6F0;
    box-shadow: var(--shadow);
}

.preview-container h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
    font-weight: 700;
    display: flex;
    align-items: center;
}

.preview-container h3::before {
    content: "\f06e"; /* 미리보기 아이콘 */
    font-family: "Font Awesome 6 Free";
    margin-right: 10px;
    color: var(--primary-color);
    font-weight: 900;
}

#preview-img {
    max-width: 100%;
    max-height: 400px;
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    object-fit: contain;
    box-shadow: var(--shadow);
}

/* 하단 버튼 컨테이너 */
.button-container {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
    flex-wrap: wrap;
}

button {
    padding: 10px 20px;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
}

.primary-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: 0 4px 8px rgba(251, 127, 13, 0.25);
}

.primary-btn:hover {
    box-shadow: 0 6px 12px rgba(251, 127, 13, 0.3);
}

.danger-btn {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: white;
    box-shadow: 0 4px 8px rgba(231, 76, 60, 0.25);
}

.danger-btn:hover {
    box-shadow: 0 6px 12px rgba(231, 76, 60, 0.3);
}

.info-btn {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    box-shadow: 0 4px 8px rgba(52, 152, 219, 0.25);
}

.info-btn:hover {
    box-shadow: 0 6px 12px rgba(52, 152, 219, 0.3);
}

/* 예시 이미지 스타일 */
#example-images-container img {
    border: 2px solid #ddd;
    border-radius: 10px;
    transition: all 0.3s ease;
}

#example-images-container img:hover {
    transform: scale(1.05);
    border-color: var(--primary-color);
    box-shadow: 0 4px 10px rgba(251, 127, 13, 0.2);
}

/* 스크롤바 스타일링 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.05);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 10px;
}

/* 모바일 대응 */
@media (max-width: 900px) {
    .workspace-wrapper {
        flex-direction: column;
        align-items: center;
    }
    .canvas-and-controls, .preview-section {
        flex-basis: auto;
        width: 100%;
        max-width: 600px;
    }
    .control-panel-sidebar {
        width: 100%;
    }
    .filter-sliders {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .upload-container {
        flex-direction: column;
    }
    .upload-box {
        width: 100%;
        margin-bottom: 10px;
    }
}