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

:root {
    --primary: #2563eb;
    --secondary: #1e40af;
    --accent: #3b82f6;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --text-dark: #1e293b;
    --text-gray: #64748b;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --border: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

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

/* Header */
header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    padding: 3rem 0;
    text-align: center;
    box-shadow: var(--shadow);
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.95;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Stats Section */
.stats-section {
    margin: 2rem 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

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

.stat-card h3 {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.stat-card p {
    color: var(--text-gray);
    font-weight: 500;
}

/* Navigation Section */
.nav-section {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin: 2rem 0;
}

.nav-section h2 {
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.nav-card {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 8px;
    border: 2px solid var(--border);
    text-decoration: none;
    color: var(--text-dark);
    transition: all 0.3s ease;
}

.nav-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.nav-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--primary);
}

.nav-card p {
    color: var(--text-gray);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.nav-card .count {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.9rem;
}

/* Featured Section */
.featured-section {
    margin: 2rem 0;
}

.featured-section h2 {
    margin-bottom: 1.5rem;
}

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

.featured-card {
    background: var(--bg-white);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: transform 0.3s ease;
}

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

.featured-card h3 {
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.featured-card .tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--primary);
    color: white;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.featured-card .tag.unicorn {
    background: var(--success);
}

.featured-card .tag.high-value {
    background: var(--warning);
}

.featured-card p {
    color: var(--text-gray);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.featured-card .btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--primary);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    transition: background 0.3s ease;
}

.featured-card .btn:hover {
    background: var(--secondary);
}

/* Updates Section */
.updates-section {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin: 2rem 0;
}

.updates-section h2 {
    margin-bottom: 1.5rem;
}

.updates-list {
    list-style: none;
}

.update-item {
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.update-item:last-child {
    border-bottom: none;
}

.update-date {
    font-weight: 600;
    color: var(--primary);
    min-width: 180px;
}

.update-item p {
    color: var(--text-gray);
}

/* Footer */
footer {
    background: var(--text-dark);
    color: white;
    padding: 2rem 0;
    margin-top: 3rem;
}

footer .container {
    text-align: center;
}

footer p {
    margin: 0.5rem 0;
    opacity: 0.9;
}

/* Responsive */
@media (max-width: 768px) {
    header h1 {
        font-size: 1.8rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

    .update-item {
        flex-direction: column;
    }

    .update-date {
        min-width: auto;
        margin-bottom: 0.5rem;
    }
}