:root {
    /* Color System - Dark Brutalist with Electric Accents */
    --bg-primary: #0a0a0a;
    --bg-secondary: #151515;
    --bg-tertiary: #1f1f1f;
    
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --text-tertiary: #606060;
    
    --accent-primary: #00ff88;
    --accent-secondary: #00d4ff;
    --accent-danger: #ff3366;
    --accent-warning: #ffaa00;
    
    --border-color: #2a2a2a;
    --border-accent: rgba(0, 255, 136, 0.3);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Typography */
    --font-display: 'Outfit', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Effects */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.7);
    --shadow-glow: 0 0 20px rgba(0, 255, 136, 0.2);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.6s ease;
}

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

body {
    font-family: var(--font-display);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

/* Background Effects */
.bg-grain {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 1;
    opacity: 0.5;
}

.bg-gradient {
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(
        circle at 30% 20%, 
        rgba(0, 255, 136, 0.05) 0%, 
        transparent 50%
    ),
    radial-gradient(
        circle at 70% 80%, 
        rgba(0, 212, 255, 0.05) 0%, 
        transparent 50%
    );
    pointer-events: none;
    z-index: 0;
    animation: gradientShift 20s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-10%, -10%); }
}

/* Container */
.container {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    margin-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--border-color);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.logo svg {
    color: var(--accent-primary);
}

.logo .accent {
    color: var(--accent-primary);
}

.header-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-primary);
    animation: pulse 2s ease infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--text-primary), var(--accent-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.03em;
    line-height: 1.1;
}

.subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* Upload Zone */
.upload-zone {
    position: relative;
    border: 2px dashed var(--border-color);
    border-radius: 16px;
    padding: var(--spacing-2xl);
    text-align: center;
    transition: all var(--transition-base);
    background: var(--bg-secondary);
    cursor: pointer;
    margin-bottom: var(--spacing-xl);
}

.upload-zone:hover {
    border-color: var(--border-accent);
    background: var(--bg-tertiary);
    box-shadow: var(--shadow-glow);
}

.upload-zone.dragover {
    border-color: var(--accent-primary);
    background: rgba(0, 255, 136, 0.05);
    transform: scale(1.02);
}

.upload-icon {
    color: var(--accent-primary);
    margin-bottom: var(--spacing-md);
    opacity: 0.8;
}

.upload-text h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.upload-text p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.file-limit {
    font-family: var(--font-mono);
    font-size: 0.75rem !important;
    color: var(--text-tertiary) !important;
    margin-top: var(--spacing-xs);
}

/* Buttons */
.btn-upload {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--accent-primary);
    color: var(--bg-primary);
    border: none;
    border-radius: 8px;
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.btn-upload:hover {
    background: #00ff99;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 255, 136, 0.3);
}

.btn-primary {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--accent-primary);
    color: var(--bg-primary);
    border: none;
    border-radius: 8px;
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.btn-primary:hover {
    background: #00ff99;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 255, 136, 0.3);
}

.btn-secondary {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--accent-primary);
}

.btn-text {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    cursor: pointer;
    transition: color var(--transition-fast);
}

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

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.feature-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-md);
    transition: all var(--transition-base);
}

.feature-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.feature-card h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.feature-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Analysis Section */
.analysis-section {
    animation: slideIn 0.4s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* File Preview */
.file-preview {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.preview-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
}

.preview-content {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.preview-content img {
    width: 120px;
    height: 120px;
    object-fit: cover;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.preview-info {
    flex: 1;
}

.preview-info p {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

/* Loading State */
.loading-state {
    text-align: center;
    padding: var(--spacing-2xl) 0;
}

.scanner-animation {
    position: relative;
    width: 200px;
    height: 200px;
    margin: 0 auto var(--spacing-lg);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

.scan-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(var(--border-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
    background-size: 20px 20px;
    opacity: 0.3;
}

.scan-line {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent-primary), transparent);
    animation: scan 2s ease-in-out infinite;
    box-shadow: 0 0 10px var(--accent-primary);
}

@keyframes scan {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(197px); }
}

.loading-text {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--accent-primary);
}

.loading-steps {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    max-width: 400px;
    margin: 0 auto;
}

.loading-steps .step {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--text-tertiary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-left: 2px solid var(--border-color);
    transition: all var(--transition-base);
}

.loading-steps .step.active {
    color: var(--accent-primary);
    border-left-color: var(--accent-primary);
    background: rgba(0, 255, 136, 0.05);
}

/* Results Container */
.results-container {
    animation: fadeIn 0.6s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.result-header h2 {
    font-size: 2rem;
    font-weight: 800;
}

.result-label {
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.875rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.result-label.verified {
    background: rgba(0, 255, 136, 0.2);
    color: var(--accent-primary);
    border: 1px solid var(--accent-primary);
}

.result-label.suspicious {
    background: rgba(255, 170, 0, 0.2);
    color: var(--accent-warning);
    border: 1px solid var(--accent-warning);
}

.result-label.ai-generated {
    background: rgba(255, 51, 102, 0.2);
    color: var(--accent-danger);
    border: 1px solid var(--accent-danger);
}

/* Score Container */
.score-container {
    display: flex;
    gap: var(--spacing-xl);
    align-items: center;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.score-circle {
    position: relative;
    width: 200px;
    height: 200px;
}

.score-ring {
    transform: rotate(-90deg);
    width: 100%;
    height: 100%;
}

.score-ring-bg {
    fill: none;
    stroke: var(--bg-tertiary);
    stroke-width: 12;
}

.score-ring-progress {
    fill: none;
    stroke: var(--accent-primary);
    stroke-width: 12;
    stroke-linecap: round;
    stroke-dasharray: 534;
    stroke-dashoffset: 534;
    transition: stroke-dashoffset 1.5s ease, stroke 0.3s ease;
    filter: drop-shadow(0 0 8px rgba(0, 255, 136, 0.5));
}

.score-value {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.score-value #scoreNumber {
    font-size: 3.5rem;
    font-weight: 800;
    font-family: var(--font-mono);
    line-height: 1;
}

.score-percent {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-secondary);
}

.score-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.score-info p {
    font-size: 1rem;
    color: var(--text-secondary);
}

.score-info strong {
    color: var(--accent-primary);
    font-family: var(--font-mono);
}

/* Breakdown Section */
.breakdown-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.breakdown-section h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.breakdown-grid {
    display: grid;
    gap: var(--spacing-md);
}

.breakdown-item {
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: 8px;
}

.breakdown-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    font-family: var(--font-mono);
    font-size: 0.875rem;
}

.breakdown-header span:last-child {
    color: var(--accent-primary);
    font-weight: 600;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-primary);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 4px;
    transition: width 1s ease;
    box-shadow: 0 0 8px rgba(0, 255, 136, 0.5);
}

/* SynthID Section */
.synthid-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.synthid-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    color: var(--accent-secondary);
}

.synthid-header h4 {
    font-size: 1.125rem;
    font-weight: 700;
}

.synthid-status {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.synthid-note {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    line-height: 1.6;
}

/* Result Actions */
.result-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

/* History Section */
.history-section {
    margin-top: var(--spacing-2xl);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: var(--spacing-lg);
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.history-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
}

.history-empty {
    text-align: center;
    color: var(--text-tertiary);
    padding: var(--spacing-xl);
    font-style: italic;
}

.history-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.history-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.history-item:hover {
    background: var(--bg-primary);
    border-left: 3px solid var(--accent-primary);
}

.history-item-info {
    flex: 1;
}

.history-item-name {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.history-item-meta {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

.history-item-score {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 700;
    margin-right: var(--spacing-md);
}

.history-item-label {
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 700;
}

/* Footer */
.footer {
    margin-top: var(--spacing-2xl);
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

.footer-tech {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    margin-top: var(--spacing-xs);
}

/* Responsive */
@media (max-width: 768px) {
    .score-container {
        flex-direction: column;
        text-align: center;
    }
    
    .result-actions {
        flex-direction: column;
    }
    
    .result-actions button {
        width: 100%;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .result-header {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: flex-start;
    }
}