body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    text-align: center;
    background: linear-gradient(135deg, #43cea2, #185a9d);
    overflow: hidden;
    position: relative;
}

.wave-container {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    overflow: hidden;
    z-index: -1;
}

.wave {
    position: absolute;
    width: 200%;
    height: 200%;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 45%;
    animation: waveAnimation 10s infinite linear;
}

.wave1 {
    animation-delay: 0s;
}
.wave2 {
    animation-delay: 3s;
    background: rgba(255, 255, 255, 0.07);
}
.wave3 {
    animation-delay: 6s;
    background: rgba(255, 255, 255, 0.05);
}

@keyframes waveAnimation {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

header h1 {
    font-size: 3rem;
    margin-bottom: 10px;
}

header p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 600px;
}

.start-btn {
    background: #fff;
    color: #185a9d;
    border: none;
    padding: 15px 40px;
    font-size: 1.2rem;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 20px;
}

.start-btn:hover {
    background: #185a9d;
    color: #fff;
}

.auth-buttons {
    display: flex;
    gap: 15px;
}

.auth-buttons button {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid #fff;
    color: #fff;
    padding: 10px 25px;
    border-radius: 25px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.auth-buttons button:hover {
    background: #fff;
    color: #185a9d;
}

footer {
    position: absolute;
    bottom: 20px;
    font-size: 0.9rem;
    color: #e0f7fa;
}