:root {
    --bg-color: #fff0b6;
    --text-color: #097199;
    --primary-color: #3182ce;
    --primary-hover: #2c5282;
    --accent-color: #3ac7f8;
    --secondary-bg: #f7fafc;
    --border-color: #e2e8f0;
    --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #06384e;
        --text-color: #E5FEFF;
        --primary-color: #63b3ed;
        --primary-hover: #4299e1;
        --accent-color: #3ac7f8;
        --secondary-bg: #2d3748;
        --border-color: #4a5568;
    }
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-sans);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    transition: background-color 0.3s, color 0.3s;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

header {
    background-color: var(--secondary-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-color);
}

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

.nav-links a {
    color: var(--text-color);
    font-weight: 500;
}

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

main {
    padding: 3rem 0;
}

h1,
h2,
h3 {
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

.hero {
    text-align: center;
    padding: 3rem 0;
}

.hero h1 {
    font-size: 3.5rem;
    color: var(--primary-color);
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-color);
    opacity: 0.8;
    max-width: 600px;
    margin: 0 auto 2rem;
}

.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 9999px;
    font-weight: bold;
    transition: background-color 0.2s;
}

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

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

.grid4 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.card {
    background-color: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1.5rem;
    transition: transform 0.2s;
}

.card:hover {
    transform: translateY(-5px);
}

.card h3 {
    color: var(--accent-color);
}

footer {
    background-color: var(--secondary-bg);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    text-align: center;
    margin-top: auto;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 2rem;
}

.pagination a {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.25rem;
}

.pagination a.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}