/* --- Buttons --- */

.btn {
    display: inline-flex; justify-content: center; align-items: center; gap: 8px;
    padding: 10px 20px; border: none; border-radius: var(--radius);
    cursor: pointer; font-weight: 600; text-decoration: none;
    transition: all 0.2s ease; font-size: 14px; box-sizing: border-box;
}
.btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none !important; box-shadow: none !important; }
.btn:hover:not(:disabled) { transform: translateY(-2px); box-shadow: var(--shadow); text-decoration: none; }

.btn-primary { background: var(--primary-gradient); color: white; }
.btn-primary:hover:not(:disabled) { color: white; box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4); }

.btn-secondary { background: white; color: var(--secondary); border: 1px solid var(--border-color); }
.btn-secondary:hover:not(:disabled) { border-color: var(--primary); color: var(--primary); }

.btn-danger { background: var(--danger); color: white; }
.btn-success { background: var(--success); color: white; }

.btn-lg { padding: 14px 28px; font-size: 16px; border-radius: 30px; }
.btn-sm { padding: 6px 12px; font-size: 12px; }

/* --- Forms & Inputs --- */
.form-control, input[type="text"], input[type="number"], input[type="url"], input[type="date"], input[type="password"], select, textarea {
    width: 100%; padding: 12px; border: 2px solid var(--border-color);
    border-radius: var(--radius); font-size: 14px; box-sizing: border-box;
    transition: border-color 0.2s; font-family: inherit;
}
.form-control:focus, input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary); }
textarea { resize: vertical; }

.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-weight: 600; color: var(--text-medium); margin-bottom: 5px; }
.form-group small { display: block; color: var(--text-muted); font-size: 12px; margin-top: 5px; }

/* Checkboxes */
.checkbox-label { display: flex !important; align-items: center; cursor: pointer; font-weight: normal; margin-bottom: 0; }
.checkbox-label input[type="checkbox"] { width: 18px; height: 18px; margin: 0 10px 0 0; cursor: pointer; }

/* --- Cards & Panels --- */
.card { background: white; border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }

.panel { padding: 15px; border-radius: var(--radius); margin-bottom: 20px; }
.panel-info { background: #f8fafc; border-left: 4px solid var(--accent); }
.panel-warning { background: var(--warning-bg); border: 1px solid var(--warning-border); color: #856404; }
.panel-danger { background: var(--danger-bg); border: 1px solid var(--danger-border); color: #721c24; }
.panel-success { background: var(--success-bg); border: 1px solid var(--success-border); color: #155724; }

/* --- Status Badges & Tags --- */
.badge { padding: 4px 10px; border-radius: 12px; font-size: 12px; font-weight: 600; display: inline-block; }
.badge-pending { background: #fef08a; color: #854d0e; }
.badge-approved { background: #bbf7d0; color: #166534; }
.badge-rejected { background: var(--danger-bg); color: var(--danger); }
.badge-admin { color: #e53e3e; background: #fed7d7; }
.badge-user { color: #3182ce; background: #ebf8ff; }

/* --- Tag UI --- */
.tags-input-container { position: relative; }

.tags-suggestions {
    position: absolute; top: 100%; left: 0; right: 0;
    background: white; border: 2px solid var(--border-color);
    border-radius: 8px; max-height: 200px; overflow-y: auto;
    display: none; z-index: 1000; box-shadow: var(--shadow);
}

.tags-suggestions.show { display: block; }
.tag-suggestion { padding: 10px 15px; cursor: pointer; }
.tag-suggestion:hover { background: var(--bg-light); }
.tag-badge {
    display: inline-flex; align-items: center; gap: 6px; padding: 4px 12px;
    background: var(--primary-gradient); color: white; border-radius: 20px; font-size: 13px; font-weight: 500;
}
.tag-remove { cursor: pointer; font-weight: bold; opacity: 0.8; transition: opacity 0.2s;}
.tag-remove:hover { opacity: 1; }

/* --- Search Box --- */
.search-box {
    display: flex; align-items: stretch; background: white;
    border-radius: 50px; overflow: hidden; box-shadow: var(--shadow);
    border: 2px solid transparent; transition: all 0.2s;
}
.search-box:focus-within { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.2); }
.search-box input { border: none !important; border-radius: 0 !important; flex: 1; padding: 16px 24px; background: transparent; }
.search-box input:focus { box-shadow: none !important; }
.search-box .btn { border-radius: 0; padding: 0 32px; margin: 0; box-shadow: none; }

/* --- 3D Viewer Base --- */
.viewer-container {
    width: 100%; max-width: 900px; margin: 0 auto 0 auto; aspect-ratio: 16 / 9; background: #333; border-radius: var(--radius);
    position: relative !important; overflow: hidden; display: flex; align-items: center; justify-content: center;
}
.viewer-container canvas { width: 100% !important; height: 100% !important; outline: none; display: block;}

.viewer-container #settings-toggle-btn {
    background: rgba(30, 30, 30, 0.85);
    color: white;
    padding: 0;
}

.viewer-container #settings-toggle-btn:hover {
    background: rgba(70, 70, 70, 0.95);
    transform: scale(1.05);
}

.viewer-container .settings-panel {
    position: absolute;
    top: 55px;
    right: 0;
    background: rgba(20, 20, 20, 0.95);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    padding: 15px;
    width: 220px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.7);
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.viewer-container .settings-panel h4 {
    margin: 0;
    font-size: 0.85rem;
    text-transform: uppercase;
    color: #aaa;
    border-bottom: 1px solid #444;
    padding-bottom: 8px;
    letter-spacing: 0.05em;
}

.viewer-container .toggle-switch {
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    font-size: 0.95rem;
    color: #eee;
    margin: 0;
}

.viewer-container .toggle-switch input {
    display: none;
}

.viewer-container .toggle-switch .slider {
    width: 36px;
    height: 20px;
    background-color: #555;
    border-radius: 20px;
    position: relative;
    transition: background-color 0.3s;
    flex-shrink: 0;
}

.viewer-container .toggle-switch .slider::before {
    content: "";
    position: absolute;
    height: 16px;
    width: 16px;
    left: 2px;
    bottom: 2px;
    background-color: white;
    border-radius: 50%;
    transition: transform 0.3s;
}

.viewer-container .toggle-switch input:checked + .slider {
    background-color: var(--primary);
}

.viewer-container .toggle-switch input:checked + .slider::before {
    transform: translateX(16px);
}

.viewer-container:-webkit-full-screen {
    max-width: none !important;
    margin: 0 !important;
    border-radius: 0 !important;
    aspect-ratio: auto !important;
    width: 100vw !important;
    height: 100vh !important;
}

.viewer-container:fullscreen {
    max-width: none !important;
    margin: 0 !important;
    border-radius: 0 !important;
    aspect-ratio: auto !important;
    width: 100vw !important;
    height: 100vh !important;
}

#loader-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85); /* Dark overlay */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 10;
}

#loader-container.hidden {
    display: none !important;
}

.loader-title {
    color: #ffffff;
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 15px;
}

.progress-track {
    width: 50%;
    max-width: 300px;
    height: 8px;
    background-color: #444;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 10px;
}

#loader-bar {
    height: 100%;
    width: 0%;
    background-color: var(--primary, #007bff);
    transition: width 0.1s linear; /* Smooth progress interpolation */
}

.loader-percentage {
    color: #aaa;
    font-size: 0.9rem;
    font-family: monospace;
}

/* Viewer Controls */
.viewer-controls-panel {
    border: 1px solid var(--border-color, #e0e0e0);
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.viewer-controls-panel h3 {
    color: var(--text-color, #333);
    border-bottom: 1px solid var(--border-color, #e0e0e0);
}

.controls-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    align-items: flex-start;
}

.control-group {
    background: #ffffff;
    padding: 15px;
    border-radius: 6px;
    border: 1px solid #eee;
}

.control-group strong {
    color: #555;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    border-bottom: 2px solid #f0f0f0;
    padding-bottom: 5px;
    margin-bottom: 15px;
}

.control-group select.form-control {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #ccc;
    border-radius: 4px;
    background-color: #f9f9f9;
    font-size: 0.9rem;
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.control-group select.form-control:focus {
    outline: none;
    border-color: var(--primary);
}

.viewer-controls-panel .toggle-switch {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: #444;
    cursor: pointer;
    margin-bottom: 10px;
}

.fullscreen-btn {
    position: absolute;
    bottom: 15px;
    right: 15px;
    background: rgba(0, 0, 0, 0.6);
    color: white;
    border: none;
    border-radius: 4px;
    width: 36px;
    height: 36px;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease;
    z-index: 10;
}

.fullscreen-btn:hover {
    background: rgba(0, 0, 0, 0.9);
}

.content-grid {
    transition: all 0.3s ease;
}

.content-grid.viewer-active-layout {
    grid-template-columns: 1fr; 
}

.viewer-ui-buttons {
    position: absolute;
    bottom: 15px;
    right: 15px;
    display: flex;
    gap: 10px;
    z-index: 20;
}

.viewer-btn {
    background: rgba(0, 0, 0, 0.6);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    width: 42px;
    height: 42px;
    font-size: 1.4rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease;
    padding: 0;
}

.viewer-btn:hover {
    background: rgba(0, 0, 0, 0.9);
}

/* Floating Sketchfab-style overlay */
.viewer-controls-overlay {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 280px;
    max-height: calc(100% - 80px); /* Prevent overlap with UI buttons */
    overflow-y: auto;
    background: rgba(20, 20, 20, 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    padding: 15px;
    color: #eee;
    z-index: 15;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.viewer-controls-overlay .control-group {
    background: transparent;
    border: none;
    padding: 0;
}

.viewer-controls-overlay select.form-control {
    background: rgba(0, 0, 0, 0.5);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.viewer-controls-overlay .toggle-switch {
    justify-content: flex-start;
    gap: 12px;
    color: #ddd;
}

.viewer-controls-overlay h3 {
    margin-top: 0;
    margin-bottom: 15px;
    font-size: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    padding-bottom: 10px;
    color: white;
}

.viewer-controls-overlay .control-group strong {
    color: #bbb;
    border-bottom: none;
    margin-bottom: 8px;
    font-size: 0.8rem;
}


/* --- Model Grid --- */
.model-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 20px;
}

.model-card {
    display: flex;
    flex-direction: column;
    padding: 0;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
}

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

.model-preview {
    width: 100%;
    height: 180px;
    background: var(--bg-light);
}

.model-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.model-details {
    padding: 15px;
}

.model-details h3 {
    margin: 0 0 10px 0;
    font-size: 1.1rem;
}

.model-details h3 a {
    color: var(--text-dark);
    text-decoration: none;
}

.model-details h3 a:hover {
    color: var(--primary);
}

.error-container { text-align: center; padding: 50px 20px; }
.error-container h1 { color: var(--danger); }