/* China Selection Strategy - Styles */

:root {
    --primary: #c41e3a;
    --primary-dark: #8b0000;
    --secondary: #ffd700;
    --success: #28a745;
    --danger: #dc3545;
    --dark: #1a1a2e;
    --darker: #0f0f1a;
    --light: #f8f9fa;
    --gray: #6c757d;
    --border: #2d2d44;
}

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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: linear-gradient(135deg, var(--darker) 0%, var(--dark) 100%);
    color: var(--light);
    min-height: 100vh;
    line-height: 1.6;
}

/* Navbar */
.navbar {
    background: rgba(15, 15, 26, 0.95);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--secondary);
}

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

.nav-links a {
    color: var(--light);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: all 0.3s;
}

.nav-links a:hover,
.nav-links a.active {
    background: var(--primary);
    color: white;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 3rem 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 2rem;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(90deg, var(--secondary), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--gray);
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.stat-card {
    background: rgba(45, 45, 68, 0.5);
    padding: 1.5rem 2rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    min-width: 180px;
}

.stat-card.highlight {
    border-color: var(--secondary);
    background: rgba(255, 215, 0, 0.1);
}

.stat-value {
    display: block;
    font-size: 2rem;
    font-weight: bold;
    color: var(--success);
}

.stat-label {
    display: block;
    color: var(--gray);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

/* Sections */
.section {
    margin-bottom: 3rem;
}

.section h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--secondary);
}

/* Comparison Grid */
.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.period-card {
    background: rgba(45, 45, 68, 0.5);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.period-card.testing {
    border-color: var(--success);
}

.period-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.period-dates {
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.badge {
    background: var(--success);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: bold;
}

/* Tables */
.metrics-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
}

.metrics-table th,
.metrics-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.metrics-table th {
    color: var(--gray);
    font-weight: normal;
    font-size: 0.85rem;
}

.metrics-table .positive {
    color: var(--success);
    font-weight: bold;
}

.metrics-table .negative {
    color: var(--danger);
}

.metrics-table .highlight-row {
    background: rgba(255, 215, 0, 0.1);
}

.metrics-table .highlight-row td {
    font-weight: bold;
    text-align: center;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-secondary {
    background: transparent;
    color: var(--light);
    border: 1px solid var(--border);
}

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

/* Chart */
.chart-container {
    background: rgba(45, 45, 68, 0.5);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    height: 400px;
}

/* Info Grid */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.info-card {
    background: rgba(45, 45, 68, 0.5);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.info-card h4 {
    color: var(--secondary);
    margin-bottom: 0.5rem;
}

/* Universe Table */
.universe-table-container {
    overflow-x: auto;
}

.universe-table {
    width: 100%;
    border-collapse: collapse;
    background: rgba(45, 45, 68, 0.5);
    border-radius: 12px;
    overflow: hidden;
}

.universe-table th,
.universe-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.universe-table th {
    background: rgba(0, 0, 0, 0.3);
    color: var(--secondary);
}

.universe-table tr:hover {
    background: rgba(255, 215, 0, 0.05);
}

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

.disclaimer {
    font-size: 0.8rem;
    margin-top: 0.5rem;
}

/* Dashboard Content */
.dashboard-content {
    background: rgba(45, 45, 68, 0.5);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.dashboard-content h1 {
    color: var(--secondary);
    margin-bottom: 1rem;
}

.dashboard-content h2 {
    color: var(--primary);
    margin-top: 2rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.dashboard-content h3 {
    color: var(--light);
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.dashboard-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

.dashboard-content th,
.dashboard-content td {
    padding: 0.75rem;
    text-align: left;
    border: 1px solid var(--border);
}

.dashboard-content th {
    background: rgba(0, 0, 0, 0.3);
    color: var(--secondary);
}

.dashboard-content code {
    background: rgba(0, 0, 0, 0.3);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-family: 'Consolas', monospace;
}

.dashboard-content pre {
    background: rgba(0, 0, 0, 0.3);
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1rem 0;
}

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

.dashboard-content hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 2rem 0;
}

.dashboard-content blockquote {
    border-left: 4px solid var(--primary);
    padding-left: 1rem;
    margin: 1rem 0;
    color: var(--gray);
}

/* Loading */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 3rem;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Portfolio Section */
.portfolio-section {
    background: rgba(45, 45, 68, 0.5);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border);
}

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

.portfolio-date, .portfolio-next {
    color: var(--gray);
}

.portfolio-date strong, .portfolio-next strong {
    color: var(--secondary);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.portfolio-card {
    background: rgba(0, 0, 0, 0.2);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.portfolio-card.holdings {
    border-color: var(--success);
}

.portfolio-card.exclusions {
    border-color: var(--danger);
}

.portfolio-card h4 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.portfolio-card.holdings h4 {
    color: var(--success);
}

.portfolio-card.exclusions h4 {
    color: var(--danger);
}

.stock-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.stock-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.stock-list li:last-child {
    border-bottom: none;
}

.stock-ticker {
    font-weight: bold;
    color: var(--light);
}

.stock-name {
    color: var(--gray);
    font-size: 0.9rem;
}

.stock-weight {
    color: var(--secondary);
    font-weight: bold;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .hero-stats {
        flex-direction: column;
        align-items: center;
    }
    
    .comparison-grid {
        grid-template-columns: 1fr;
    }
}