:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-color: #f8fafc;
    --accent-color: #38bdf8;
    --hover-color: #7dd3fc;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1000px;
    text-align: center;
}

header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.highlight {
    color: var(--accent-color);
}

header p {
    font-weight: 300;
    opacity: 0.8;
    margin-bottom: 3rem;
}

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

.card {
    background-color: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 2.5rem;
    text-decoration: none;
    color: inherit;
    transition: transform 0.3s ease, border-color 0.3s ease;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-color);
}

.card h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.card p {
    font-size: 0.95rem;
    opacity: 0.7;
    margin-bottom: 2rem;
}

.btn {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    background-color: var(--accent-color);
    color: var(--bg-color);
    border-radius: 8px;
    font-weight: 700;
    transition: background-color 0.3s ease;
}

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

footer {
    margin-top: 4rem;
    font-size: 0.8rem;
    opacity: 0.5;
}