body {
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    min-height: 100vh;
    color: white;
}

.audio-player {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 1rem;
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    padding: 1.5rem;
    max-width: 520px;
    margin: 2rem auto;
}

.progress-bar-container {
    height: 6px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 3px;
    cursor: pointer;
    overflow: hidden;
}

.progress {
    height: 100%;
    background: #0d6efd;
    width: 0;
    transition: width 0.08s linear;
}

.btn-control {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: transparent;
    border: none;
    color: white;
    font-size: 1.3rem;
    transition: all 0.2s;
}

.btn-control:hover {
    background: rgba(255, 255, 255, 0.12);
    transform: scale(1.08);
}

.btn-control.active {
    color: #0d6efd;
}

.song-select {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
}

.song-select option {
    background: #1e3c72;
    color: white;
}

.secret-zone {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 24px;
    height: 24px;
    opacity: 0;
    z-index: 10;
}


@keyframes float-note-1 {

    0%,
    100% {
        transform: translateY(0) translateX(0) rotate(0deg);
        opacity: 0.3;
    }

    50% {
        transform: translateY(-20px) translateX(8px) rotate(5deg);
        opacity: 0.6;
    }
}

@keyframes float-note-2 {

    0%,
    100% {
        transform: translateY(0) translateX(0) rotate(0deg);
        opacity: 0.25;
    }

    50% {
        transform: translateY(-25px) translateX(-6px) rotate(-8deg);
        opacity: 0.55;
    }
}

@keyframes float-note-3 {

    0%,
    100% {
        transform: translateY(0) translateX(0) rotate(0deg);
        opacity: 0.35;
    }

    50% {
        transform: translateY(-18px) translateX(10px) rotate(6deg);
        opacity: 0.65;
    }
}

@keyframes float-note-4 {

    0%,
    100% {
        transform: translateY(0) translateX(0) rotate(0deg);
        opacity: 0.28;
    }

    50% {
        transform: translateY(-22px) translateX(-8px) rotate(-5deg);
        opacity: 0.58;
    }
}

.music-note {
    position: fixed;
    color: rgba(255, 255, 255, 0.4);
    font-size: 2.5rem;
    pointer-events: none;
    z-index: 1;
}

.note-1 {
    top: 15%;
    left: 8%;
    animation: float-note-1 6s ease-in-out infinite;
}

.note-2 {
    top: 25%;
    right: 12%;
    animation: float-note-2 5.5s ease-in-out infinite 1s;
}

.note-3 {
    top: 45%;
    left: 5%;
    animation: float-note-3 7s ease-in-out infinite 2s;
}

.note-4 {
    top: 60%;
    right: 8%;
    animation: float-note-4 6.5s ease-in-out infinite 0.5s;
}

.note-5 {
    top: 35%;
    left: 15%;
    animation: float-note-1 5s ease-in-out infinite 3s;
    font-size: 2rem;
    opacity: 0.25;
}

.note-6 {
    top: 70%;
    right: 18%;
    animation: float-note-2 6s ease-in-out infinite 1.5s;
    font-size: 2.2rem;
    opacity: 0.3;
}



/* Notes supplémentaires zone lecteur */
.note-7 {
    top: 8%;
    left: 50%;
    animation: float-note-3 5.5s ease-in-out infinite 0.8s;
    font-size: 2rem;
    opacity: 0.32;
}

.note-8 {
    top: 12%;
    left: 65%;
    animation: float-note-1 6.2s ease-in-out infinite 2.2s;
    font-size: 2.3rem;
    opacity: 0.28;
}

.note-9 {
    top: 10%;
    left: 35%;
    animation: float-note-2 5.8s ease-in-out infinite 1.3s;
    font-size: 1.8rem;
    opacity: 0.25;
}

.note-10 {
    top: 5%;
    right: 25%;
    animation: float-note-4 6.8s ease-in-out infinite 0.3s;
    font-size: 2.1rem;
    opacity: 0.3;
}

<style>
    /* From Uiverse.io by krlozCJ */
    button {
        border: none;
        outline: none;
        background-color: #3a4d8a;
        padding: 10px 20px;
        font-size: 12px;
        font-weight: 700;
        color: #fff;
        border-radius: 5px;
        transition: all ease 0.1s;
        box-shadow: 0px 5px 0px 0px #5a6899;
    }

    button:active {
        transform: translateY(5px);
        box-shadow: 0px 0px 0px 0px #5a6899;
    }
</style>