:root {
    --space-dark: #0b0d17;
    --space-purple: #1a0b2e;
    --neon-cyan: #00f3ff;
    --neon-pink: #ff00cc;
    --neon-ambiance: #bc13fe;
    --glass-bg: rgba(0, 0, 0, 0.4); /* Fond de bouton plus sombre pour la lisibilité */
    --glass-border: rgba(255, 255, 255, 0.2);
    --text-color: #ffffff;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Poppins', sans-serif; user-select: none; }

body {
    background: radial-gradient(circle at center, var(--space-purple) 0%, var(--space-dark) 100%);
    color: var(--text-color);
    height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 15px;
    overflow: hidden;
}

.container { width: 100%; height: 100%; max-width: 1200px; margin: 0 auto; display: flex; flex-direction: column; }

header { display: flex; flex-direction: column; align-items: center; margin-bottom: 20px; }

h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 2rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    background: linear-gradient(45deg, var(--neon-cyan), var(--neon-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 10px rgba(0, 243, 255, 0.5));
}

.mode-toggle {
    background: var(--glass-bg);
    border: 1px solid var(--neon-cyan);
    color: var(--neon-cyan);
    padding: 8px 20px;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.8rem;
    border-radius: 30px;
    cursor: pointer;
    margin-top: 10px;
    box-shadow: 0 0 10px rgba(0, 243, 255, 0.2);
    transition: all 0.3s;
}

.mode-toggle.ambiance-mode {
    border-color: var(--neon-ambiance);
    color: var(--neon-ambiance);
    box-shadow: 0 0 10px rgba(188, 19, 254, 0.2);
}

.sound-grid { flex-grow: 1; margin-bottom: 20px; }

.sound-bank { display: none; width: 100%; height: 100%; grid-template-columns: repeat(4, 1fr); gap: 15px; }
.sound-bank.active { display: grid; }

.sound-pad {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 2px solid var(--glass-border);
    border-radius: 15px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 10px 20px rgba(0,0,0,0.4);
}

.sound-pad:hover {
    border-color: rgba(255,255,255,0.5);
    transform: translateY(-3px);
}

/* État Actif / Lecture */
.sound-pad.playing {
    border-color: var(--neon-pink);
    background: rgba(255, 0, 204, 0.15);
    box-shadow: 0 0 30px var(--neon-pink), inset 0 0 15px var(--neon-pink);
}

.sound-pad.ambiance.playing {
    border-color: var(--neon-ambiance);
    background: rgba(188, 19, 254, 0.15);
    box-shadow: 0 0 30px var(--neon-ambiance), inset 0 0 15px var(--neon-ambiance);
}

.icon { 
    font-size: 4.5rem; 
    filter: drop-shadow(0 5px 10px rgba(0,0,0,0.8));
    transition: transform 0.2s;
}

.label {
    font-size: 0.85rem;
    margin-top: 15px;
    font-family: 'Orbitron', sans-serif;
    color: #ffffff;
    text-shadow: 2px 2px 4px #000000; /* Ombre portée noire pour lisibilité maximale */
    font-weight: bold;
    text-transform: uppercase;
}

#stop-all {
    background: linear-gradient(45deg, #8b0000, #ff0000);
    color: white;
    border: 2px solid #ff4d4d;
    padding: 18px;
    font-family: 'Orbitron', sans-serif;
    font-size: 1.2rem;
    font-weight: 900;
    border-radius: 12px;
    cursor: pointer;
    box-shadow: 0 5px 20px rgba(255, 0, 0, 0.4);
    text-shadow: 2px 2px 0px rgba(0,0,0,0.5);
    transition: all 0.2s;
}

#stop-all:active { transform: scale(0.98); filter: brightness(1.2); }

@media (max-width: 800px) {
    .sound-bank { grid-template-columns: repeat(3, 1fr); gap: 10px; }
    .icon { font-size: 3rem; }
    .label { font-size: 0.7rem; }
}