body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #2c3e50, #1a1a2e);
    margin: 0;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #ecf0f1;
}

#main-container {
    text-align: center;
    background: rgba(25, 25, 35, 0.85);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    width: 90%;
    max-width: 800px;
    backdrop-filter: blur(10px);
}

h1 {
    font-size: 32px;
    margin-bottom: 10px;
    color: #f1c40f;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

.button-grid {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.nav-button {
    display: block;
    padding: 25px;
    text-decoration: none;
    background: linear-gradient(135deg, #3498db, #8e44ad);
    color: white;
    border-radius: 15px;
    font-size: 20px;
    font-weight: bold;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    text-align: center;
    border: 2px solid rgba(255, 255, 255, 0.1);
}

.nav-button:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
    background: linear-gradient(135deg, #2980b9, #9b59b6);
}

.button-number {
    display: block;
    font-size: 24px;
    color: #f1c40f;
    margin-bottom: 8px;
}

.button-desc {
    display: block;
    font-size: 18px;
    color: #ecf0f1;
	margin-bottom: 10px;
}