:root { 
    --bg: #050505; 
    --panel-bg: #151515; 
    --accent: #00f2ff; /* Cyan néon pour le 1080p */
    --danger: #ff004c;
    --text: #ffffff;
}

body { 
    background: var(--bg); 
    color: var(--text); 
    margin: 0; 
    font-family: 'Segoe UI', Roboto, sans-serif; 
    overflow: hidden; 
    height: 100vh;
}

/* Header Studio */
header { 
    height: 80px; 
    background: linear-gradient(180deg, #222 0%, #111 100%);
    display: flex; 
    align-items: center; 
    padding: 0 30px; 
    justify-content: space-between; 
    border-bottom: 3px solid #333;
    box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}

/* Grille Full HD (8 colonnes x 8 lignes = 64 boutons) */
.grid { 
    display: grid; 
    grid-template-columns: repeat(8, 1fr); 
    grid-template-rows: repeat(8, 1fr);
    gap: 10px; 
    height: calc(100vh - 80px); 
    padding: 15px; 
    box-sizing: border-box;
}

.btn { 
    background: #1a1a1a; 
    border: 1px solid #333; 
    border-radius: 6px; 
    display: flex; 
    flex-direction: column;
    align-items: center; 
    justify-content: center; 
    position: relative; 
    font-size: 0.9rem; 
    font-weight: 500;
    transition: all 0.1s ease;
    cursor: pointer;
    box-shadow: inset 0 0 10px rgba(0,0,0,0.5);
}

.btn:hover { background: #222; border-color: #555; }
.btn.active { border-color: #444; color: #aaa; }
.btn.playing { 
    background: var(--danger); 
    color: white; 
    box-shadow: 0 0 20px var(--danger), inset 0 0 15px rgba(0,0,0,0.3);
    border-color: white;
    transform: scale(0.98);
}

.btn-num { position: absolute; top: 5px; left: 8px; font-size: 0.7rem; color: #555; }
.loop-tag { position: absolute; bottom: 5px; right: 8px; font-size: 14px; color: var(--accent); opacity: 0; }
.btn.has-loop .loop-tag { opacity: 1; }

/* Modale d'édition centrée (Style Desktop) */
#editOverlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.9); display: none; z-index: 100;
    justify-content: center; align-items: center;
}
#editPanel {
    background: var(--panel-bg); width: 500px; padding: 40px;
    border-radius: 15px; border: 2px solid var(--accent);
    box-shadow: 0 0 50px rgba(0,242,255,0.2);
}

input[type="text"], input[type="range"] { 
    width: 100%; padding: 12px; margin: 10px 0; background: #000; 
    border: 1px solid #444; color: white; border-radius: 4px; 
}

.actions { display: flex; gap: 15px; margin-top: 30px; }
.actions button { flex: 1; padding: 15px; border-radius: 5px; font-weight: bold; border: none; cursor: pointer; }
.btn-save { background: var(--accent); color: black; }
.btn-cancel { background: #333; color: white; }

body.edit-mode .btn { border: 1px dashed var(--accent); cursor: crosshair; }
.stop-all { background: var(--danger); color: white; border: none; padding: 12px 25px; border-radius: 4px; font-weight: bold; cursor: pointer; }
.btn.dragging {
    opacity: 0.4;
    transform: scale(0.9);
}

.btn.drag-over {
    border: 2px solid var(--accent) !important;
    background: #333;
}