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

body {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 16px 16px 24px;
  font-family: system-ui, -apple-system, sans-serif;
  background: #1a1a1a;
  color: #e8e8e8;
}

header h1 {
  font-size: clamp(1.3rem, 6vw, 2rem);
  font-weight: 900;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #fff;
  text-align: center;
}

/* Collapsible list selector */
#listSelector {
  width: 100%;
  max-width: 480px;
  background: #252525;
  border-radius: 12px;
  border: 1px solid #333;
  overflow: hidden;
}

#listSelector summary {
  padding: 14px 18px;
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #aaa;
  cursor: pointer;
  user-select: none;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  -webkit-tap-highlight-color: transparent;
}

#listSelector summary::-webkit-details-marker {
  display: none;
}

#listSelector summary::after {
  content: '▾';
  font-size: 1.1rem;
  transition: transform 0.25s;
  color: #666;
}

#listSelector[open] summary::after {
  transform: rotate(180deg);
}

#listSelector ul {
  list-style: none;
  padding: 0 12px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

#listSelector li label {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 14px;
  background: #2e2e2e;
  border: 1px solid #3a3a3a;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  color: #ddd;
  transition: background 0.15s;
  -webkit-tap-highlight-color: transparent;
}

#listSelector li label:active {
  background: #383838;
}

#listSelector li label input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 24px;
  height: 24px;
  min-width: 24px;
  border: 2px solid #555;
  border-radius: 6px;
  background: #1a1a1a;
  cursor: pointer;
  position: relative;
  transition: background 0.15s, border-color 0.15s;
  flex-shrink: 0;
}

#listSelector li label input[type="checkbox"]:checked {
  background: #e83d44;
  border-color: #e83d44;
}

#listSelector li label input[type="checkbox"]:checked::after {
  content: '✓';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #fff;
  font-size: 15px;
  font-weight: 900;
  line-height: 1;
}

/* Wheel */
#wheelOfFortune {
  position: relative;
  display: inline-block;
  animation: fadeUp 0.5s ease-out both;
}

#wheel {
  display: block;
  border-radius: 50%;
  box-shadow: 0 0 0 4px #333, 0 8px 48px rgba(0, 0, 0, 0.8);
}

/* Spin button */
#spin {
  font-family: system-ui, -apple-system, sans-serif;
  font-weight: 900;
  font-size: clamp(0.55rem, 3.5vw, 0.9rem);
  line-height: 1.2;
  user-select: none;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 6px;
  position: absolute;
  top: 50%;
  left: 50%;
  width: 30%;
  height: 30%;
  margin: -15%;
  background: #222;
  color: #fff;
  box-shadow: 0 0 0 6px currentColor, 0 4px 20px rgba(0, 0, 0, 0.6);
  border-radius: 50%;
  transition: background 0.6s;
  word-break: break-word;
  hyphens: auto;
  -webkit-tap-highlight-color: transparent;
}

#spin::after {
  content: '';
  position: absolute;
  top: -16px;
  border: 9px solid transparent;
  border-bottom-color: currentColor;
  border-top: none;
}

#spin.spinning {
  animation: pulse 0.4s ease-out;
}

@keyframes pulse {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.14); }
  100% { transform: scale(1); }
}

/* Result banner */
#result {
  width: 100%;
  max-width: 480px;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  border-radius: 12px;
  font-size: clamp(1rem, 4vw, 1.15rem);
  font-weight: 800;
  letter-spacing: 0.04em;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  transition: max-height 0.35s ease, opacity 0.3s ease, padding 0.35s ease;
  pointer-events: none;
}

#result.visible {
  max-height: 120px;
  opacity: 1;
  padding: 14px 16px;
  pointer-events: auto;
}

#result-text {
  flex: 1;
  min-width: 0;
}

#result-skip {
  background: transparent;
  border: 2px solid currentColor;
  color: inherit;
  border-radius: 20px;
  padding: 6px 14px;
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  -webkit-tap-highlight-color: transparent;
  transition: opacity 0.15s;
}

#result-skip:active {
  opacity: 0.6;
}

/* Reshuffle button */
#reshuffle {
  background: transparent;
  border: 1px solid #444;
  color: #888;
  border-radius: 20px;
  padding: 10px 28px;
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
  -webkit-tap-highlight-color: transparent;
}

#reshuffle:active {
  color: #ccc;
  border-color: #666;
}

/* Session history */
#history {
  width: 100%;
  max-width: 480px;
  display: flex;
  flex-direction: row;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}

#history::-webkit-scrollbar {
  display: none;
}

.history-item {
  padding: 6px 12px;
  border-radius: 16px;
  font-size: 0.78rem;
  font-weight: 700;
  white-space: nowrap;
  flex-shrink: 0;
  letter-spacing: 0.03em;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}