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

:root {
  --bg: #ffffff;
  --fg: #000000;
  --fg-muted: rgba(0, 0, 0, 0.35);
  --glass-bg: rgba(255, 255, 255, 0.55);
  --glass-border: rgba(0, 0, 0, 0.08);
  --btn-bg: rgba(0, 0, 0, 0.06);
  --btn-hover: rgba(0, 0, 0, 0.12);
  --primary-bg: #000000;
  --primary-fg: #ffffff;
  --shadow: 0 2px 16px rgba(0, 0, 0, 0.10);
  --modal-overlay: rgba(255, 255, 255, 0.6);
}

body.dark {
  --bg: #000000;
  --fg: #ffffff;
  --fg-muted: rgba(255, 255, 255, 0.35);
  --glass-bg: rgba(0, 0, 0, 0.55);
  --glass-border: rgba(255, 255, 255, 0.10);
  --btn-bg: rgba(255, 255, 255, 0.08);
  --btn-hover: rgba(255, 255, 255, 0.16);
  --primary-bg: #ffffff;
  --primary-fg: #000000;
  --shadow: 0 2px 16px rgba(255, 255, 255, 0.08);
  --modal-overlay: rgba(0, 0, 0, 0.6);
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  background: var(--bg);
  color: var(--fg);
  transition: background 0.4s, color 0.4s;
  touch-action: manipulation;
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
  -webkit-user-select: none;
  user-select: none;
}

/* ── Canvas ───────────────────────────────────── */
#sphere-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

/* ── Logo ────────────────────────────────────── */
#logo-wrap {
  position: fixed;
  top: 24px;
  right: 28px;
  width: 140px;
  height: 70px;
  z-index: 90;
  overflow: hidden;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1),
              opacity 0.4s;
}

#logo-wrap.logo-hidden {
  transform: translateY(calc(-100% - 40px));
  opacity: 0;
  pointer-events: none;
}

.logo-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  opacity: 0;
  transform: translateY(60%);
  transition: opacity 0.6s ease, transform 0.6s ease;
  pointer-events: none;
}

.logo-img.logo-active {
  opacity: 1;
  transform: translateY(0);
}

.logo-img.logo-out {
  opacity: 0;
  transform: translateY(-60%);
}

/* ── Control bar ──────────────────────────────── */
#control-bar {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(0);
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 22px;
  border-radius: 999px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow);
  z-index: 100;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1),
              opacity 0.4s,
              background 0.4s, border-color 0.4s, box-shadow 0.4s;
}

#control-bar.bar-hidden {
  transform: translateX(-50%) translateY(calc(100% + 60px));
  opacity: 0;
  pointer-events: none;
}

.pill-btn {
  all: unset;
  cursor: pointer;
  padding: 12px 26px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 500;
  background: var(--btn-bg);
  color: var(--fg);
  transition: background 0.2s, color 0.2s, transform 0.15s;
  user-select: none;
  white-space: nowrap;
}

.pill-btn:hover {
  background: var(--btn-hover);
}

.pill-btn:active {
  transform: scale(0.96);
}

.pill-btn.primary {
  background: var(--primary-bg);
  color: var(--primary-fg);
}

.pill-btn.primary:hover {
  opacity: 0.85;
}

.count-control {
  display: flex;
  align-items: center;
  gap: 8px;
}

#count-display {
  display: inline-block;
  min-width: 32px;
  text-align: center;
  font-size: 18px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.circle-btn {
  all: unset;
  cursor: pointer;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 20px;
  font-weight: 500;
  background: var(--btn-bg);
  color: var(--fg);
  transition: background 0.2s, transform 0.15s;
  user-select: none;
}

.circle-btn:hover {
  background: var(--btn-hover);
}

.circle-btn:active {
  transform: scale(0.92);
}

/* ── Winner overlay ───────────────────────────── */
#winner-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 40px;
  background: var(--modal-overlay);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  opacity: 1;
  transition: opacity 0.45s ease;
}

#winner-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

#winner-names {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 20px 32px;
  padding: 0 40px;
  max-width: 80vw;
}

#winner-names .winner-name {
  font-size: clamp(40px, 7vw, 80px);
  font-weight: 800;
  letter-spacing: 0.04em;
  line-height: 1.2;
}

#winner-overlay .pill-btn {
  padding: 14px 36px;
  font-size: 18px;
}

/* ── Name list modal ──────────────────────────── */
#name-modal {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--modal-overlay);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: opacity 0.35s;
}

#name-modal.hidden {
  opacity: 0;
  pointer-events: none;
}

.modal-card {
  width: min(480px, 90vw);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 28px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.modal-card h2 {
  font-size: 18px;
  font-weight: 700;
}

#name-textarea {
  width: 100%;
  height: 260px;
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 14px;
  font-size: 15px;
  font-family: inherit;
  background: var(--btn-bg);
  color: var(--fg);
  resize: vertical;
  outline: none;
  transition: border-color 0.2s;
  -webkit-user-select: text;
  user-select: text;
  touch-action: pan-y;
}

#name-textarea:focus {
  border-color: var(--fg);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

.modal-actions .pill-btn {
  padding: 12px 28px;
  font-size: 16px;
}

.hidden {
  opacity: 0;
  pointer-events: none;
}