/* Base Styles */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --bg: #0f172a;
    --bg-card: #1e293b;
    --bg-hover: #334155;
    --text: #f1f5f9;
    --text-muted: #94a3b8;
    --border: #334155;
    --radius: 12px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.6;
}

.app-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    text-align: center;
    padding: 40px 20px;
    margin-bottom: 30px;
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    background: linear-gradient(135deg, var(--primary), #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* Sections */
.section {
    margin-bottom: 30px;
}

.hidden {
    display: none !important;
}

/* Upload Card */
.upload-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow);
}

.upload-area {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 60px 40px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-area:hover,
.upload-area.dragover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
}

.upload-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.upload-area h2 {
    margin-bottom: 10px;
    font-size: 1.5rem;
}

.upload-area p {
    color: var(--text-muted);
    margin-bottom: 20px;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

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

.btn-success:hover {
    background: #059669;
}

.btn-secondary {
    background: var(--bg-hover);
    color: var(--text);
}

.btn-secondary:hover {
    background: #475569;
}

/* Settings Panel */
.settings-panel {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid var(--border);
}

.settings-panel h3 {
    margin-bottom: 10px;
    color: var(--text);
    font-size: 1.2rem;
}

.settings-description {
    color: var(--text-muted);
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.settings-grid {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.setting-item {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.setting-item label {
    font-weight: 600;
    font-size: 1rem;
}

.setting-item input[type="range"] {
    width: 100%;
    height: 8px;
    -webkit-appearance: none;
    background: var(--bg);
    border-radius: 4px;
    outline: none;
}

.setting-item input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
}

.slider-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.slider-labels span:nth-child(2) {
    font-weight: 600;
    color: var(--primary);
}

.setting-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Quality Mode Buttons */
.quality-buttons {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-top: 10px;
}

.quality-btn {
    background: var(--bg);
    border: 2px solid var(--border);
    border-radius: 12px;
    padding: 20px 15px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text);
}

.quality-btn:hover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
}

.quality-btn.active {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.2);
}

.quality-icon {
    font-size: 1.5rem;
}

.quality-label {
    font-weight: 600;
    font-size: 1rem;
}

.quality-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: center;
}

/* How it works */
.how-it-works {
    margin-top: 30px;
    padding: 20px;
    background: var(--bg);
    border-radius: var(--radius);
}

.how-it-works h4 {
    margin-bottom: 15px;
    color: var(--text-muted);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.criteria-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.criteria-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.criteria-icon {
    font-size: 1.2rem;
    color: var(--primary);
}

.criteria-item strong {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 4px;
}

.criteria-item p {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin: 0;
}

/* File Preview */
.file-preview {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid var(--border);
}

.file-preview h3 {
    margin-bottom: 20px;
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 10px;
    margin-bottom: 20px;
    max-height: 200px;
    overflow-y: auto;
}

.preview-item {
    aspect-ratio: 1;
    border-radius: 8px;
    overflow: hidden;
    position: relative;
}

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

.preview-item .remove-btn {
    position: absolute;
    top: 4px;
    right: 4px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border: none;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
}

/* Processing Section */
.processing-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 60px 40px;
    text-align: center;
    box-shadow: var(--shadow);
}

.processing-animation {
    margin-bottom: 30px;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.progress-bar {
    height: 8px;
    background: var(--bg);
    border-radius: 4px;
    margin: 20px 0;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), #a855f7);
    border-radius: 4px;
    width: 0%;
    transition: width 0.5s ease;
}

.progress-text {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary);
}

.processing-steps {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    opacity: 0.4;
    transition: opacity 0.3s ease;
}

.step.active {
    opacity: 1;
}

.step.complete {
    opacity: 1;
    color: var(--success);
}

.step-icon {
    font-size: 1.5rem;
}

/* Results Section */
.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 20px;
}

.results-header h2 {
    font-size: 1.8rem;
}

.results-actions {
    display: flex;
    gap: 10px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
    box-shadow: var(--shadow);
}

.stat-card.highlight {
    background: linear-gradient(135deg, var(--primary), #a855f7);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-card.highlight .stat-label {
    color: rgba(255, 255, 255, 0.8);
}

/* Rejection Breakdown */
.rejection-breakdown {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 30px;
}

.rejection-breakdown h3 {
    margin-bottom: 20px;
    font-size: 1rem;
    color: var(--text-muted);
}

.rejection-bars {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.rejection-item {
    display: flex;
    align-items: center;
    gap: 15px;
}

.rejection-label {
    flex: 0 0 200px;
    font-size: 0.9rem;
    color: var(--text);
}

.rejection-bar-container {
    flex: 1;
    height: 24px;
    background: var(--bg);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.rejection-bar {
    height: 100%;
    background: var(--danger);
    border-radius: 4px;
    transition: width 0.5s ease;
}

.rejection-count {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.8rem;
    font-weight: 600;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 10px;
}

.tab {
    padding: 12px 24px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.tab:hover {
    background: var(--bg-hover);
    color: var(--text);
}

.tab.active {
    background: var(--primary);
    color: white;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Photo Grid */
.photo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}

.photo-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.photo-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.photo-card img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
}

.photo-info {
    padding: 12px;
}

.photo-filename {
    font-size: 0.8rem;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 8px;
}

.photo-score {
    display: flex;
    align-items: center;
    gap: 8px;
}

.score-bar {
    flex: 1;
    height: 6px;
    background: var(--bg);
    border-radius: 3px;
    overflow: hidden;
}

.score-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--success), #34d399);
    border-radius: 3px;
}

.score-value {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--success);
    min-width: 40px;
    text-align: right;
}

.photo-reason {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 8px;
    padding: 6px 8px;
    background: var(--bg);
    border-radius: 4px;
}

/* Rejected photo styling */
.photo-card.rejected {
    opacity: 0.8;
}

.photo-card.rejected .score-fill {
    background: linear-gradient(90deg, var(--danger), #f87171);
}

.photo-card.rejected .score-value {
    color: var(--danger);
}

.photo-card.rejected .photo-reason {
    color: var(--danger);
}

/* Selected photo reason styling */
.photo-reason.selected-reason {
    color: var(--success);
    background: rgba(16, 185, 129, 0.1);
    border-left: 3px solid var(--success);
}

.photo-reason.rejected-reason {
    color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
    border-left: 3px solid var(--danger);
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
}

.modal-content {
    background: var(--bg-card);
    border-radius: var(--radius);
    max-width: 900px;
    max-height: 90vh;
    overflow: auto;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 2rem;
    color: var(--text-muted);
    cursor: pointer;
    z-index: 1;
}

.modal-close:hover {
    color: var(--text);
}

#modal-image {
    width: 100%;
    max-height: 60vh;
    object-fit: contain;
}

.modal-info {
    padding: 24px;
}

.modal-info h3 {
    margin-bottom: 15px;
    word-break: break-all;
}

.modal-reason {
    padding: 12px 16px;
    background: var(--bg);
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.modal-reason.selected {
    border-left: 4px solid var(--success);
}

.modal-reason.rejected {
    border-left: 4px solid var(--danger);
}

.score-breakdown {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
}

.score-item {
    background: var(--bg);
    padding: 16px;
    border-radius: 8px;
}

.score-item-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.score-item-value {
    font-size: 1.5rem;
    font-weight: 600;
}

.score-item-bar {
    height: 4px;
    background: var(--border);
    border-radius: 2px;
    margin-top: 8px;
    overflow: hidden;
}

.score-item-fill {
    height: 100%;
    background: var(--primary);
    border-radius: 2px;
}

/* Responsive */
@media (max-width: 768px) {
    .header h1 {
        font-size: 1.8rem;
    }

    .upload-area {
        padding: 40px 20px;
    }

    .quality-buttons {
        grid-template-columns: 1fr;
    }

    .processing-steps {
        gap: 15px;
    }

    .step {
        font-size: 0.85rem;
    }

    .results-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .photo-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }

    .rejection-label {
        flex: 0 0 120px;
        font-size: 0.8rem;
    }
}

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

::-webkit-scrollbar-track {
    background: var(--bg);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--bg-hover);
}