:root {
    --primary-color: #00C805;
    --primary-dark: #00A004;
    --secondary-color: #FF3B30;
    --bg-primary: #0a0e1a;
    --bg-secondary: #151925;
    --bg-card: #1a1f2e;
    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    --border-color: #2d3748;
    --hover-bg: #252b3b;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
}

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

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

/* Navbar */
.navbar {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.nav-container {
    max-width: 1800px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
}

.logo-icon {
    width: 32px;
    height: 32px;
    display: block;
}

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

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
}

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

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, rgba(10, 14, 26, 0.90) 0%, rgba(21, 25, 37, 0.72) 100%), 
                url('images/AIStockTradingBot.png') right center/contain no-repeat;
    padding: 4rem 2rem;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.hero-content {
    max-width: 1400px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-color), #00E8FF);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

/* Container */
.container {
    max-width: 1800px;
    margin: 0 auto;
    padding: 1rem;
}

/* Controls Section */
.controls-section {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1rem;
    margin-bottom: 1rem;
}

.search-box {
    position: relative;
    margin-bottom: 1.5rem;
}

.search-input {
    width: 100%;
    padding: 1rem 3rem 1rem 1rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.3s;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.search-icon {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.25rem;
}

.filter-controls {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: center;
}

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

.filter-select {
    padding: 0.5rem 1rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: border-color 0.3s;
}

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

/* Stats Bar */
.stats-bar {
    display: flex;
    gap: 2rem;
    padding: 0.75rem 1rem;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    margin-bottom: 1rem;
}

.stat-item {
    display: flex;
    gap: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
}

.stat-value {
    color: var(--primary-color);
    font-weight: 600;
}

/* File Grid */
.file-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.file-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1rem;
    transition: all 0.3s;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.file-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), #00E8FF);
    transform: scaleX(0);
    transition: transform 0.3s;
}

.file-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.file-card:hover::before {
    transform: scaleX(1);
}

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

.file-icon {
    font-size: 2rem;
}

.file-category {
    background-color: var(--primary-color);
    color: var(--bg-primary);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.file-name {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.file-date {
    color: var(--text-secondary);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.file-date::before {
    content: '📅';
}

/* Loading */
.loading {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
}

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

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

/* No Results */
.no-results {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
    font-size: 1.125rem;
}

/* Footer */
.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 2rem;
    margin-top: 4rem;
    text-align: center;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
}

.disclaimer {
    margin-top: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .file-grid {
        grid-template-columns: 1fr;
    }

    .nav-links {
        gap: 1rem;
    }

    .filter-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-label {
        margin-top: 1rem;
    }
}

/* Viewer Page Styles */
.viewer-container {
    max-width: 1800px;
    margin: 0 auto;
    padding: 0.5rem;
}

.back-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    margin-bottom: 0.5rem;
}

.back-button:hover {
    background-color: var(--hover-bg);
    border-color: var(--primary-color);
}

.markdown-content {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 0.75rem;
    line-height: 1.6;
}

.markdown-content h1,
.markdown-content h2,
.markdown-content h3,
.markdown-content h4,
.markdown-content h5,
.markdown-content h6 {
    margin-top: 0.75rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.markdown-content h1 {
    font-size: 2rem;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.25rem;
}

.markdown-content h2 {
    font-size: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.25rem;
}

.markdown-content h3 {
    font-size: 1.25rem;
}

.markdown-content p {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.markdown-content a {
    color: var(--primary-color);
    text-decoration: none;
}

.markdown-content a:hover {
    text-decoration: underline;
}

.markdown-content code {
    background-color: var(--bg-secondary);
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
}

.markdown-content pre {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1rem;
    overflow-x: auto;
    margin-bottom: 1rem;
}

.markdown-content pre code {
    background: none;
    padding: 0;
}

.markdown-content ul,
.markdown-content ol {
    margin-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.markdown-content li {
    margin-bottom: 0.25rem;
}

.markdown-content blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: 0.75rem;
    margin: 0.5rem 0;
    color: var(--text-secondary);
    font-style: italic;
}

.markdown-content table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 0.5rem;
}

.markdown-content th,
.markdown-content td {
    border: 1px solid var(--border-color);
    padding: 0.5rem;
    text-align: left;
}

.markdown-content th {
    background-color: var(--bg-secondary);
    font-weight: 600;
}

.markdown-content img {
    max-width: 100%;
    height: auto;
    border-radius: 0.5rem;
    margin: 0.5rem 0;
}

/* Visualization styles */
.visualization-container {
    margin: 0.75rem 0;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    text-align: center;
}

.visualization-image {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    background: white;
    padding: 0.5rem;
}

/* Header anchor links */
.markdown-content h1[id],
.markdown-content h2[id],
.markdown-content h3[id],
.markdown-content h4[id],
.markdown-content h5[id],
.markdown-content h6[id] {
    position: relative;
    scroll-margin-top: 2rem;
    transition: color 0.2s ease;
}

.markdown-content h1[id]:hover,
.markdown-content h2[id]:hover,
.markdown-content h3[id]:hover,
.markdown-content h4[id]:hover,
.markdown-content h5[id]:hover,
.markdown-content h6[id]:hover {
    color: var(--primary-color);
}

.markdown-content h1[id]::before,
.markdown-content h2[id]::before,
.markdown-content h3[id]::before,
.markdown-content h4[id]::before {
    content: '🔗';
    position: absolute;
    left: -1.5rem;
    opacity: 0;
    font-size: 0.8em;
    transition: opacity 0.2s ease;
}

.markdown-content h1[id]:hover::before,
.markdown-content h2[id]:hover::before,
.markdown-content h3[id]:hover::before,
.markdown-content h4[id]:hover::before {
    opacity: 0.6;
}

/* About Page Styles */
.about-section,
.disclaimer-section,
.contact-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    margin-bottom: 1.5rem;
}

.section-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.section-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.disclaimer-card {
    background: rgba(255, 59, 48, 0.05);
    border-left: 4px solid var(--secondary-color);
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.disclaimer-card .section-title {
    color: var(--secondary-color);
}

.about-text p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
}

.about-text p:last-child {
    margin-bottom: 0;
}

.disclaimer-card p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin: 0;
}

.contact-info {
    text-align: center;
}

.contact-intro {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 2rem;
}

.contact-intro strong {
    color: var(--primary-color);
}

.social-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-top: 2rem;
}

.social-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    min-width: 100px;
}

.social-link:hover {
    background: var(--hover-bg);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.social-link i {
    font-size: 1.75rem;
}

.social-link span {
    font-size: 0.9rem;
    font-weight: 500;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 2rem 1rem;
    margin-top: 4rem;
    text-align: center;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-content p {
    color: var(--text-secondary);
    margin: 0.5rem 0;
}

.footer-note {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Responsive Design for About Page */
@media (max-width: 768px) {
    .about-section,
    .disclaimer-section,
    .contact-section {
        margin-bottom: 1rem;
        padding: 0 0.5rem;
    }
    
    .section-card {
        padding: 1.5rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .about-text p {
        font-size: 1rem;
    }
    
    .social-links {
        gap: 1rem;
    }
    
    .social-link {
        min-width: 80px;
        padding: 0.75rem;
    }
}