body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background: #050f3c;
    color: #fff;
}

.navbar {
    background: #1a237e;
    color: white;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.main-content {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.countdown-section {
    text-align: center;
    margin-bottom: 2rem;
    padding: 2rem;
    background: #080f5a;
    color: rgb(255, 255, 255);
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.exam-info-section {
    background: rgb(48, 47, 62);
    border-radius: 8px;
    padding: 2rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.exam-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.exam-card {
    background: rgb(84, 89, 214);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.2s;
}

.exam-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.btn {
    background: #1a237e;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.2s;
}

.btn:hover {
    background: #283593;
}

.btn-add {
    margin-right: 0.5rem;
    background: #4caf50;
}

.btn-edit {
    background: #2196f3;
}

.btn-delete {
    background: #f44336;
}

h1, h2, h3, h4, h5, h6 {
    color: #1a237e;
    margin: 0.5em 0;
}