@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;700&display=swap');

:root {
    --primary-color: #3b82f6;
    --background-color: #f8fafc;
    --text-color: #1e293b;
    --card-background-color: #ffffff;
    --border-color: #e2e8f0;
    --shadow-color: rgba(0, 0, 0, 0.05);
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: var(--background-color);
    color: var(--text-color);
}

header {
    background: var(--card-background-color);
    color: var(--text-color);
    padding: 2rem;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

header h1 {
    margin: 0;
    font-size: 2.5rem;
    font-weight: 700;
}

header h1 a {
    color: inherit;
    text-decoration: none;
}

header p {
    font-size: 1.2rem;
    color: #64748b;
}

main {
    max-width: 960px;
    margin: 2rem auto;
    padding: 0 1rem;
}

nav ul {
    list-style: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

nav a {
    display: block;
    background-color: var(--card-background-color);
    padding: 1.5rem;
    text-decoration: none;
    color: var(--text-color);
    border-radius: 12px;
    box-shadow: 0 4px 15px var(--shadow-color);
    border: 1px solid var(--border-color);
    transition: transform 0.2s, box-shadow 0.2s;
}

nav a:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
}

nav h2 {
    margin-top: 0;
    color: var(--primary-color);
}

.intro {
    margin-top: 3rem;
    background: var(--card-background-color);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px var(--shadow-color);
    border: 1px solid var(--border-color);
}

footer {
    text-align: center;
    padding: 2rem;
    margin-top: 2rem;
    background-color: var(--card-background-color);
    color: #64748b;
    border-top: 1px solid var(--border-color);
}

.footer-links {
    margin-bottom: 1rem;
}

.footer-links a, .footer-links span {
    color: #64748b;
    margin: 0 0.5rem;
    font-size: 0.9rem;
    text-decoration: none;
}