body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
    background: linear-gradient(to right top, #0f2027, #203a43, #2c5364);
    color: #ffffff;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
}

.container {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 3rem 2rem;
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.18);
    text-align: center;
    max-width: 500px;
    width: 90%;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

p {
    margin-bottom: 2rem;
    font-size: 1rem;
    color: black;
}

.btn {
    display: block;
    width: 100%;
    margin: 0.5rem 0;
    padding: 0.8rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    background: linear-gradient(145deg, #1e3c72, #2a5298);
    color: #fff;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
    transform: scale(1.03);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

#play-button {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: rgba(255, 255, 255, 0.15);
    border: none;
    color: #fff;
    font-size: 1.5rem;
    padding: 10px 15px;
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.3s ease;
}

#play-button:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

audio {
    display: none;
}

@media (max-width: 500px) {
h1 {
    font-size: 2rem;
}

.btn {
    font-size: 0.95rem;
}
}