body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(to bottom right, #0f1e3a, #051021);
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100vh;
    overflow: hidden;
}

header {
    width: 100%;
    padding: 20px;
    text-align: center;
    background-color: rgba(0, 0, 0, 0.2);
}

.logo {
    max-height: 120px;
    opacity: 0.95;
}

.button-container {
    display: flex;
    gap: 40px;
    margin-top: 100px;
}

.main-button {
    background: linear-gradient(145deg, #1e3c72, #2a5298);
    color: white;
    text-decoration: none;
    padding: 20px 40px;
    font-size: 20px;
    border-radius: 12px;
    transition: all 0.3s ease;
    box-shadow: 0 0 15px rgba(30, 60, 114, 0.6), inset 0 0 5px rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(5px);
}

.main-button:hover {
    background: linear-gradient(145deg, #2a5298, #1e3c72);
    box-shadow: 0 0 25px rgba(42, 82, 152, 0.8);
}