:root {
    --primary: #6c5ce7;
    --dark: #121212;
    --card-bg: #1e1e1e;
    --light: #f4f4f4;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--dark);
    color: var(--light);
    margin: 0;
    padding: 0;
}

header {
    text-align: center;
    padding: 60px 20px;
    background: linear-gradient(180deg, #1e1e1e 0%, #121212 100%);
}

header h1 { font-size: 2.5rem; letter-spacing: 2px; }
header h1 span { color: var(--primary); }

/* Métronome */
#metronome-container {
    display: flex;
    justify-content: center;
    margin-top: -30px;
    margin-bottom: 40px;
}

.metronome-box {
    background: var(--card-bg);
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.7);
    text-align: center;
    width: 280px;
    border: 1px solid #333;
}

.visual-indicator {
    width: 15px;
    height: 15px;
    background: #444;
    border-radius: 50%;
    margin: 10px auto;
    transition: background 0.05s;
}

.visual-indicator.active {
    background: var(--primary);
    box-shadow: 0 0 15px var(--primary);
}

.bpm-display { font-size: 2rem; font-weight: 600; margin: 10px 0; }

input[type=range] { width: 100%; margin: 20px 0; accent-color: var(--primary); }

#play-btn {
    background: var(--primary);
    border: none;
    color: white;
    padding: 12px 40px;
    border-radius: 30px;
    font-weight: bold;
    cursor: pointer;
    width: 100%;
    font-size: 1rem;
}

/* Grille Vidéos */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
    padding: 20px 8%;
}

.video-card {
    background: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid #222;
}

.video-wrapper { position: relative; padding-bottom: 56.25%; height: 0; }
.video-wrapper iframe { position: absolute; top:0; left:0; width:100%; height:100%; }

.video-info { padding: 20px; }
.video-info h4 { margin: 0 0 10px 0; color: var(--primary); }
.video-info p { margin: 0; font-size: 0.9rem; opacity: 0.8; }

footer { text-align: center; padding: 40px; opacity: 0.5; font-size: 0.8rem; }