/* 
 * Hang-a-picture - Main Stylesheet
 * Premium, relaxing, and modern design system 
 */

:root {
    /* Color Palette */
    --primary-bg: #F9F9F8;
    --sidebar-bg: #FFFFFF;
    --text-main: #2C2C2C;
    --text-muted: #6B6B6B;
    --accent-color: #798C7B;
    /* Muted Sage Green */
    --accent-hover: #607262;
    --border-color: #E5E5E5;
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);

    /* Typography */
    --font-heading: 'Noto Sans JP', 'Inter', sans-serif;
    --font-body: 'Inter', 'Noto Sans JP', sans-serif;

    /* Layout Variables */
    --sidebar-width: 360px;
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    background-color: var(--primary-bg);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4 {
    font-family: var(--font-heading);
    font-weight: 500;
}

/* Application Layout */
.app-container {
    display: flex;
    height: 100vh;
    max-height: 100vh;
    overflow: hidden;
}

/* Sidebar Controls */
.controls-panel {
    width: var(--sidebar-width);
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    z-index: 10;
    box-shadow: 4px 0 15px rgba(0, 0, 0, 0.02);
}

.app-header {
    padding: 32px 24px 24px;
    border-bottom: 1px solid var(--border-color);
}

.app-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-main);
}

.app-header p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.controls-scrollable {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 32px;
}

/* Custom Scrollbar for Sidebar */
.controls-scrollable::-webkit-scrollbar {
    width: 6px;
}

.controls-scrollable::-webkit-scrollbar-thumb {
    background-color: #DDD;
    border-radius: 10px;
}

.control-section h3 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 12px;
}

/* Upload Area */
.upload-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 32px 24px;
    background-color: #FAFAFA;
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    margin: 24px;
}

.upload-area:hover,
.upload-area.dragover {
    border-color: var(--accent-color);
    background-color: #F0F4F1;
}

.upload-icon {
    font-size: 2rem;
    margin-bottom: 12px;
    opacity: 0.7;
}

.upload-text {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 4px;
}

.upload-subtext {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Radio Groups (Pills) */
.radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.radio-btn {
    position: relative;
    cursor: pointer;
}

.radio-btn input {
    position: absolute;
    opacity: 0;
}

.radio-btn span {
    display: inline-block;
    padding: 8px 16px;
    background-color: #FAFAFA;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.875rem;
    transition: var(--transition);
    user-select: none;
}

.radio-btn:hover span {
    border-color: #CCC;
}

.radio-btn input:checked+span {
    background-color: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
    box-shadow: 0 4px 10px rgba(121, 140, 123, 0.2);
}

/* Color Picker */
.color-picker-group {
    display: flex;
    gap: 12px;
}

.color-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid #E5E5E5;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.color-btn:hover {
    transform: scale(1.1);
}

.color-btn.active {
    box-shadow: 0 0 0 2px var(--sidebar-bg), 0 0 0 4px var(--accent-color);
    border-color: transparent;
}

/* Select Box */
.select-wrapper select {
    width: 100%;
    padding: 12px 16px;
    font-size: 0.95rem;
    font-family: var(--font-body);
    color: var(--text-main);
    background-color: #FAFAFA;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    appearance: none;
    cursor: pointer;
    transition: var(--transition);
}

.select-wrapper select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(121, 140, 123, 0.1);
}

.select-wrapper {
    position: relative;
}

.select-wrapper::after {
    content: '▼';
    font-size: 0.7rem;
    color: var(--text-muted);
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
}

/* Action Area */
.action-group {
    padding: 24px;
    background-color: var(--sidebar-bg);
    border-top: 1px solid var(--border-color);
}

.primary-btn {
    width: 100%;
    padding: 16px;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.primary-btn:hover:not(:disabled) {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(121, 140, 123, 0.3);
}

.primary-btn:disabled {
    background-color: #CCC;
    cursor: not-allowed;
    opacity: 0.7;
}

.text-btn {
    background: none;
    border: none;
    color: var(--accent-color);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    padding: 8px 0;
}

.text-btn:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

/* Main Content Area */
.main-content {
    flex: 1;
    position: relative;
    background-color: var(--primary-bg);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.preview-header {
    padding: 40px 40px 20px;
}

.preview-header h2 {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-main);
    letter-spacing: -0.5px;
}

.preview-header p {
    color: var(--text-muted);
    margin-top: 8px;
}

.preview-section {
    display: none;
    flex-direction: column;
    flex: 1;
}

.preview-section.view-active,
.gallery-section.view-active {
    display: flex;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.canvas-container {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0 40px 40px;
    position: relative;
}

#previewCanvas {
    max-width: 100%;
    max-height: 70vh;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
    background-color: transparent;
    transition: var(--transition);
}

.empty-state {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.5);
    padding: 40px;
    border-radius: 20px;
    border: 1px dashed var(--border-color);
}

/* Gallery Grid */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 32px;
    padding: 20px 40px 60px;
}

.room-card {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    background-color: var(--surface);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.room-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.room-img,
.room-canvas {
    width: 100%;
    height: auto;
    display: block;
    aspect-ratio: 1/1;
    object-fit: cover;
}

.room-actions {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
    display: flex;
    justify-content: flex-end;
    opacity: 0;
    transition: var(--transition);
}

.room-card:hover .room-actions {
    opacity: 1;
}

@media (hover: none) {
    .room-actions {
        opacity: 1;
    }
}

.download-btn {
    background: white;
    color: var(--text-main);
    border: none;
    border-radius: 20px;
    padding: 8px 16px;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
}

.download-btn:hover {
    background: var(--accent-color);
    color: white;
}

/* Responsive */
@media (max-width: 900px) {
    .app-container {
        flex-direction: column;
        height: auto;
        max-height: none;
        overflow: visible;
    }

    .main-content {
        overflow-y: visible;
    }

    .controls-panel {
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        box-shadow: none;
    }

    .controls-scrollable {
        max-height: none;
        overflow-y: visible;
        padding: 16px;
    }

    .preview-header {
        padding: 24px 16px 16px;
    }

    .canvas-container {
        padding: 0 16px 32px;
    }

    .gallery-grid {
        padding: 16px 16px 40px;
        grid-template-columns: 1fr;
    }
}

/* --- EC Integration & Floating Product Badge --- */
.product-badge {
    position: absolute;
    bottom: 24px;
    right: 24px;
    background: rgba(250, 248, 244, 0.95);
    border: 1px solid #b8922a;
    padding: 12px 18px;
    border-radius: 4px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    backdrop-filter: blur(5px);
    z-index: 5;
    pointer-events: auto;
    max-width: 280px;
    text-align: left;
    transition: opacity 0.3s ease;
}

.badge-title {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    color: #2c2c2c;
    margin: 0 0 4px 0;
    line-height: 1.3;
}

.badge-price {
    font-family: var(--font-body);
    font-size: 0.85rem;
    color: #b8922a;
    font-weight: 700;
    margin: 0;
}

.room-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

.buy-btn {
    background-color: #b8922a;
    color: white;
    border: none;
    border-radius: 20px;
    padding: 8px 16px;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.buy-btn:hover {
    background-color: #96741d;
    color: white;
    transform: translateY(-1px);
}