body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #121212;
    color: #ffffff;
    text-align: center;
    padding: 40px 20px;
    margin: 0;
}

h1 {
    margin-bottom: 5px;
    color: #ffffff;
}

p {
    color: #aaaaaa;
    margin-bottom: 40px;
}

/* The Soundboard Grid Setup */
.soundboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
    max-width: 800px;
    margin: 0 auto;
}

/* Base Style for All Buttons */
.sound-btn {
    background-color: #1e1e1e;
    color: #ffffff;
    border: 2px solid #333333;
    padding: 30px 20px;
    font-size: 1.1rem;
    font-weight: bold;
    border-radius: 12px;
    cursor: pointer;
    transition: transform 0.1s ease-in-out, border-color 0.2s;
    box-shadow: 0 4px 6px rgba(0,0,0,0.3);
    
    /* Default theme fallback color if variables fail */
    --btn-glow: #00ff88; 
}

/* Hover effects for a slight push animation */
.sound-btn:hover {
    transform: translateY(-3px);
    border-color: var(--btn-glow);
}

.sound-btn:active {
    transform: translateY(1px);
}

/* --- AUTOMATIC BUTTON THEME VARIABLES --- */

/* 1. Neon Green */
.soundboard-grid .sound-btn:nth-child(5n+1) {
    --btn-glow: #00ff88;
}

/* 2. Electric Cyan Blue */
.soundboard-grid .sound-btn:nth-child(5n+2) {
    --btn-glow: #00e5ff;
}

/* 3. Vivid Purple */
.soundboard-grid .sound-btn:nth-child(5n+3) {
    --btn-glow: #bd00ff;
}

/* 4. Hot Pink */
.soundboard-grid .sound-btn:nth-child(5n+4) {
    --btn-glow: #ff007f;
}

/* 5. Bright Orange */
.soundboard-grid .sound-btn:nth-child(5n+5) {
    --btn-glow: #ff9100;
}

/* --- FULL WIDTH BUTTON RULE --- */
.sound-btn.full-width {
    grid-column: 1 / -1;
}