:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --text-color: #2c3e50;
    --light-text: #7f8c8d;
    --light-bg: #f8f9fa;
    --border-color: #e1e4e8;
    --border-radius: 8px;
    --box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fff;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.site-header {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
    transition: var(--transition);
}

.logo:hover {
    opacity: 0.9;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.main-nav a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
    color: white;
    background-color: rgba(255, 255, 255, 0.1);
}

.main-nav .divider {
    color: rgba(255, 255, 255, 0.3);
}

/* Main content */
main {
    flex: 1;
    padding: 2rem 0;
}

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

.site-footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-nav {
    display: flex;
    gap: 1.5rem;
}

.footer-nav a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-nav a:hover {
    color: white;
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
    .site-header .container {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .site-footer .container {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-nav {
        margin-top: 1rem;
        justify-content: center;
    }
}