@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;500;700&display=swap');

:root {
    --bg-color: #e0e5ec;
    --shadow-light: #ffffff;
    --shadow-dark: #a3b1c6;
    --text: #444;
}

body {
    background-color: var(--bg-color);
    font-family: 'Outfit', sans-serif;
    color: var(--text);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}

.container { width: 90%; max-width: 900px; text-align: center; }

h1 { font-size: 3rem; margin-bottom: 2rem; color: #2d3436; }

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 30px;
}

.nav-card {
    background: var(--bg-color);
    padding: 30px;
    border-radius: 20px;
    text-decoration: none;
    color: var(--text);
    font-weight: 700;
    box-shadow: 9px 9px 16px var(--shadow-dark), 
               -9px -9px 16px var(--shadow-light);
    transition: all 0.3s ease;
}

.nav-card:hover {
    box-shadow: inset 6px 6px 10px var(--shadow-dark), 
                inset -6px -6px 10px var(--shadow-light);
    color: #007bff;
}

.back-btn {
    display: inline-block;
    margin-bottom: 20px;
    padding: 10px 20px;
    border-radius: 10px;
    background: var(--bg-color);
    box-shadow: 4px 4px 8px var(--shadow-dark), -4px -4px 8px var(--shadow-light);
    text-decoration: none;
    color: #444;
}