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

:root {
    --primary-color: #ff006e;
    --secondary-color: #8338ec;
    --dark-bg: #1a1a1a;
    --light-bg: #f5f5f5;
    --card-bg: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --border-color: #333333;
    --success-color: #06ffa5;
    --warning-color: #ffbe0b;
    --error-color: #ff006e;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.ai-badge {
    font-size: 0.8rem;
    background: var(--primary-color);
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    vertical-align: super;
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-link:hover, .nav-link.active {
    color: var(--primary-color);
}

/* Main Content */
.main-content {
    margin-top: 80px;
}

.section {
    padding: 4rem 0;
}

.section-light {
    background: var(--light-bg);
    color: var(--dark-bg);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

.modal-content {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    max-width: 500px;
    text-align: center;
    border: 2px solid var(--primary-color);
}

.modal-content h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.modal-content .warning {
    color: var(--warning-color);
    font-weight: 600;
    margin: 1rem 0;
}

/* Buttons */
.btn-primary, .btn-secondary, .btn-outline {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 0, 110, 0.4);
}

.btn-secondary {
    background: var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: #444;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

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

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
}

/* Hero */
.hero {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Steps */
.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.step {
    text-align: center;
    padding: 2rem;
    background: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.2rem;
    margin: 0 auto 1rem;
}

/* Upload Section */
.upload-container {
    max-width: 800px;
    margin: 0 auto;
}

.file-upload-area {
    border: 3px dashed var(--primary-color);
    border-radius: 12px;
    padding: 3rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    background: rgba(255, 0, 110, 0.05);
}

.file-upload-area:hover {
    background: rgba(255, 0, 110, 0.1);
    transform: scale(1.02);
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.file-preview {
    margin-top: 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
}

.preview-item {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    border: 2px solid var(--border-color);
}

.preview-item img, .preview-item video {
    width: 100%;
    height: 150px;
    object-fit: cover;
}

.preview-remove {
    position: absolute;
    top: 5px;
    right: 5px;
    background: var(--error-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 25px;
    height: 25px;
    cursor: pointer;
    font-weight: bold;
}

/* Personality Options */
.personality-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.personality-option {
    cursor: pointer;
}

.personality-option input[type="checkbox"] {
    display: none;
}

.personality-card {
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    text-align: center;
    transition: all 0.3s;
}

.personality-option input[type="checkbox"]:checked + .personality-card {
    border-color: var(--primary-color);
    background: rgba(255, 0, 110, 0.1);
}

.personality-name {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.personality-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Consent Checkbox */
.consent-checkbox {
    margin: 2rem 0;
    padding: 1rem;
    background: rgba(255, 0, 110, 0.1);
    border-radius: 8px;
    border: 1px solid var(--primary-color);
}

.consent-checkbox label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.consent-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* Disclaimer */
.disclaimer {
    margin-top: 2rem;
    padding: 1.5rem;
    background: rgba(255, 184, 11, 0.1);
    border-radius: 8px;
    border-left: 4px solid var(--warning-color);
}

.disclaimer h4 {
    color: var(--warning-color);
    margin-bottom: 1rem;
}

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

.disclaimer li {
    padding: 0.3rem 0;
    position: relative;
    padding-left: 1.5rem;
}

.disclaimer li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: bold;
}

/* Results */
.results-container {
    display: grid;
    gap: 2rem;
}

.ai-personality-result {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 2rem;
    border: 1px solid var(--border-color);
}

.ai-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.ai-name {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.rating-score {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.rating-breakdown {
    margin: 1rem 0;
}

.rating-item {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.feedback-text {
    background: rgba(255, 255, 255, 0.05);
    padding: 1rem;
    border-radius: 8px;
    margin-top: 1rem;
    line-height: 1.8;
}

/* Reviews */
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.review-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.review-rating {
    color: var(--warning-color);
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.review-author {
    margin-top: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
}

/* Privacy Section */
.privacy-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.privacy-item {
    text-align: center;
    padding: 2rem;
    background: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.privacy-item h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.legal-notice {
    margin-top: 3rem;
    padding: 2rem;
    background: rgba(255, 184, 11, 0.1);
    border-radius: 12px;
    border: 1px solid var(--warning-color);
}

/* Footer */
.footer {
    background: var(--card-bg);
    padding: 3rem 0 1rem;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.footer-section a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.3rem 0;
    transition: color 0.3s;
}

.footer-section a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

/* Loading Spinner */
.loading-spinner {
    display: inline-block;
    width: 50px;
    height: 50px;
    border: 3px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

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

/* Responsive */
@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    .personality-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .upload-form {
        padding: 1rem;
    }
}

/* Section Light Theme Override */
.section-light .personality-card {
    background: white;
    border-color: #ddd;
}

.section-light .step,
.section-light .review-card,
.section-light .privacy-item {
    background: white;
    border-color: #ddd;
    color: var(--dark-bg);
}

.section-light .step-number {
    color: white;
}

.section-light .text-secondary {
    color: #666;
}