/* Base styles & Dark Theme */
:root {
    --bg-color: #0f172a; 
    --card-bg: #1e293b;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --accent-color: #3b82f6; 
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    background-image: radial-gradient(circle at top, #1e293b 0%, #0f172a 100%);
}

header {
    margin-top: 10vh;
    margin-bottom: 3rem;
    text-align: center;
}

h1 {
    font-size: 3rem;
    margin: 0;
    letter-spacing: 2px;
    text-transform: uppercase;
    text-shadow: 0 4px 15px rgba(0,0,0,0.5);
}

header p {
    color: var(--text-muted);
    font-size: 1.2rem;
    margin-top: 0.5rem;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    width: 90%;
    max-width: 1000px;
    padding: 1rem;
}

.card {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    text-decoration: none;
    color: var(--text-main);
    transition: all 0.3s ease;
    border: 2px solid transparent;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-color);
    box-shadow: 0 10px 20px rgba(59, 130, 246, 0.4);
    background-color: #233147;
}

.icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.card h2 {
    margin: 0 0 0.5rem 0;
    font-size: 1.5rem;
}

.card p {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.9rem;
}

@media (max-width: 600px) {
    h1 { font-size: 2rem; }
    .grid { grid-template-columns: 1fr; }
}