* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: #111;
  color: #fff;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  min-height: 100vh;
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

h1 {
  font-size: clamp(1.5rem, 8vw, 3rem);
  letter-spacing: clamp(2px, 1vw, 6px);
  background: linear-gradient(90deg, #ff0, #f0f, #0ff, #0f0, #ff0);
  background-size: 400% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: rainbow 3s linear infinite;
  text-align: center;
  margin-bottom: 4px;
}

@keyframes rainbow {
  0% { background-position: 0% 50%; }
  100% { background-position: 400% 50%; }
}

.subtitle {
  color: #888;
  font-size: 0.95rem;
  margin-bottom: 20px;
  font-style: italic;
}

.controls {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
  justify-content: center;
}

.controls label {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #aaa;
  font-size: 0.85rem;
}

.controls input[type="range"] {
  width: 120px;
  accent-color: #f0f;
}

#earrape {
  accent-color: #f00;
}

.stop-btn {
  background: #c00;
  color: #fff;
  border: none;
  padding: 6px 16px;
  border-radius: 6px;
  font-weight: bold;
  font-size: 0.8rem;
  cursor: pointer;
  letter-spacing: 1px;
}

.stop-btn:hover {
  background: #f00;
}

.board {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
  width: 100%;
  max-width: 1100px;
}

.sound-btn {
  position: relative;
  background: #222;
  border: 2px solid #444;
  color: #fff;
  border-radius: 10px;
  padding: 20px 12px;
  font-size: 0.95rem;
  font-weight: bold;
  cursor: pointer;
  text-align: center;
  transition: transform 0.08s, border-color 0.15s, box-shadow 0.15s;
  line-height: 1.3;
  user-select: none;
}

.sound-btn .category {
  display: block;
  font-size: 0.65rem;
  font-weight: normal;
  color: #888;
  margin-top: 6px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.sound-btn:hover {
  border-color: #f0f;
  box-shadow: 0 0 12px rgba(255, 0, 255, 0.3);
}

.sound-btn:active,
.sound-btn.playing {
  transform: scale(0.95);
  border-color: #0ff;
  box-shadow: 0 0 20px rgba(0, 255, 255, 0.5);
}

/* category colors */
.sound-btn[data-cat="mario"] { border-color: #e33; }
.sound-btn[data-cat="mario"]:hover { border-color: #ff4444; box-shadow: 0 0 12px rgba(255,68,68,0.4); }

.sound-btn[data-cat="zelda"] { border-color: #3a3; }
.sound-btn[data-cat="zelda"]:hover { border-color: #4f4; box-shadow: 0 0 12px rgba(68,255,68,0.4); }

.sound-btn[data-cat="cdi"] { border-color: #c80; }
.sound-btn[data-cat="cdi"]:hover { border-color: #fa0; box-shadow: 0 0 12px rgba(255,170,0,0.4); }

.sound-btn[data-cat="robotnik"] { border-color: #d4d; }
.sound-btn[data-cat="robotnik"]:hover { border-color: #f6f; box-shadow: 0 0 12px rgba(255,100,255,0.4); }

.sound-btn[data-cat="meme"] { border-color: #0ad; }
.sound-btn[data-cat="meme"]:hover { border-color: #0df; box-shadow: 0 0 12px rgba(0,200,255,0.4); }

.sound-btn[data-cat="misc"] { border-color: #888; }
.sound-btn[data-cat="misc"]:hover { border-color: #bbb; box-shadow: 0 0 12px rgba(180,180,180,0.3); }

.sound-btn.missing {
  opacity: 0.35;
  border-style: dashed;
}

.sound-btn.missing::after {
  content: "(no file)";
  display: block;
  font-size: 0.6rem;
  color: #f66;
  margin-top: 4px;
  font-weight: normal;
}