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

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #8b5cf6;
    --accent: #ec4899;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --bg-dark: #0f172a;
    --bg-darker: #020617;
    --bg-card: rgba(30, 41, 59, 0.8);
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --border: rgba(148, 163, 184, 0.2);
    --glow: rgba(99, 102, 241, 0.5);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-darker);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(236, 72, 153, 0.1) 0%, transparent 50%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    position: relative;
    z-index: 1;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 3rem;
    animation: fadeInDown 0.8s ease-out;
}

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

.title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.title-gradient {
    background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 3s ease infinite;
    background-size: 200% 200%;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    font-weight: 300;
}

/* Upload Section */
.upload-section {
    margin-bottom: 2rem;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

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

.upload-area {
    border: 2px dashed var(--border);
    border-radius: 20px;
    padding: 3rem;
    text-align: center;
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    margin-bottom: 1.5rem;
    z-index: 1;
}

.upload-area::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(99, 102, 241, 0.1), transparent);
    transform: rotate(45deg);
    animation: shine 3s infinite;
    pointer-events: none; /* Allow clicks to pass through */
    z-index: 0;
}

@keyframes shine {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

.upload-area:hover {
    border-color: var(--primary);
    box-shadow: 0 0 30px var(--glow);
    transform: translateY(-2px);
}

.upload-area.dragover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
    box-shadow: 0 0 40px var(--glow);
}

.upload-content {
    position: relative;
    z-index: 2;
    pointer-events: auto;
}

.upload-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem;
    stroke: var(--primary);
    stroke-width: 2;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.upload-area h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

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

.image-preview {
    position: relative;
    max-width: 100%;
    margin: 0 auto;
}

.image-preview img {
    max-width: 100%;
    max-height: 400px;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.remove-image {
    position: absolute;
    top: -10px;
    right: -10px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--danger);
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.4);
}

.remove-image:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.6);
}

.detect-btn {
    width: 100%;
    padding: 1rem 2rem;
    font-size: 1.2rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
}

.detect-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.detect-btn:hover::before {
    left: 100%;
}

.detect-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(99, 102, 241, 0.6);
}

.detect-btn:active:not(:disabled) {
    transform: translateY(0);
}

.detect-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-loader {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Processing Section */
.processing-section {
    margin: 2rem 0;
    animation: fadeIn 0.5s ease-out;
}

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

.processing-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 3rem;
    text-align: center;
    border: 1px solid var(--border);
}

.spinner {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.processing-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.processing-text {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-darker);
    border-radius: 10px;
    overflow: hidden;
    margin-top: 1rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 10px;
    width: 0%;
    transition: width 0.3s ease;
    box-shadow: 0 0 10px var(--glow);
}

/* Results Section */
.results-section {
    margin: 2rem 0;
    animation: fadeInUp 0.8s ease-out;
}

.results-header {
    text-align: center;
    margin-bottom: 2rem;
}

.results-header h2 {
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.result-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 2rem;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease-out forwards;
}

.result-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.result-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.result-card.visible::before {
    transform: scaleX(1);
}

.result-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: var(--primary);
}

.decopy-card::before {
    background: linear-gradient(90deg, var(--primary), var(--secondary));
}

.sightengine-card::before {
    background: linear-gradient(90deg, var(--secondary), var(--accent));
}

.huggingface-card::before {
    background: linear-gradient(90deg, var(--accent), var(--primary));
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.card-header h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
}

.card-badge {
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    background: var(--bg-darker);
    color: var(--text-secondary);
}

.card-badge.success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.card-badge.warning {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

.card-badge.danger {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

.card-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--bg-darker);
    border-radius: 10px;
    border: 1px solid var(--border);
}

.result-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.result-value {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.1rem;
}

.analysis-section,
.confidence-section {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

.confidence-section h4 {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-weight: 600;
}

.analysis-section h4 {
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

.analysis-section ul {
    list-style: none;
    padding-left: 0;
}

.analysis-section li {
    padding: 0.5rem;
    margin-bottom: 0.5rem;
    background: var(--bg-darker);
    border-radius: 8px;
    border-left: 3px solid var(--primary);
    color: var(--text-secondary);
}

.genai-section,
.deepfake-section {
    margin-bottom: 1.5rem;
}

.genai-section h4,
.deepfake-section h4 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.reset-btn {
    width: 100%;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.reset-btn:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
}

.error-message {
    background: rgba(239, 68, 68, 0.2);
    border: 1px solid var(--danger);
    color: var(--danger);
    padding: 1rem;
    border-radius: 12px;
    margin: 1rem 0;
    text-align: center;
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

.footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    position: relative;
    z-index: 1;
}

.footer code {
    background: var(--bg-card);
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    color: var(--primary);
    font-family: 'Courier New', monospace;
}

/* Responsive */
@media (max-width: 768px) {
    .title {
        font-size: 2.5rem;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .upload-area {
        padding: 2rem 1rem;
    }
}