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

:root {
  --bg: #FFF8F0;
  --card: #ffffff;
  --border: #2D2D2D;
  --border-w: 3px;
  --text: #2D2D2D;
  --text-mid: #555555;
  --text-muted: #888888;
  --white: #2D2D2D;
  --fade-rgb: 255, 248, 240;
  --radius: 8px;
  --radius-lg: 14px;

  /* Pastel reel colours */
  --reel-1: #FFB3BA;
  --reel-2: #FFDFBA;
  --reel-3: #BAFFC9;
  --reel-4: #BAE1FF;
  --reel-5: #E8BAFF;

  --reel-1-deep: #FF8A95;
  --reel-2-deep: #FFC878;
  --reel-3-deep: #7BEDA0;
  --reel-4-deep: #78C8FF;
  --reel-5-deep: #D07BFF;

  /* Subject tab colours */
  --subj-bio: #FFB3BA;
  --subj-chem: #FFDFBA;
  --subj-geo: #BAFFC9;
  --subj-phys: #BAE1FF;
  --subj-cs: #FFE4A0;
  --subj-econ: #C9BAFF;
  --subj-env: #B8E6D0;
  --subj-sports: #FFD4A8;

  --accent: #FF6B8A;
  --accent-text: #ffffff;
  --spin-bg: #FF6B8A;
  --spin-text: #ffffff;

  --halftone: radial-gradient(circle, var(--border) 1px, transparent 1px);
  --halftone-size: 6px 6px;
}

html.light {
  --bg: #1a1a2e;
  --card: #252545;
  --border: #f0f0f0;
  --text: #f0f0f0;
  --text-mid: #c0c0c0;
  --text-muted: #888899;
  --white: #f0f0f0;
  --fade-rgb: 26, 26, 46;

  --reel-1: #5C2233;
  --reel-2: #5C3E1A;
  --reel-3: #1A4D2E;
  --reel-4: #1A3A5C;
  --reel-5: #3A1A5C;

  --reel-1-deep: #FF6B8A;
  --reel-2-deep: #FFB347;
  --reel-3-deep: #4ADE80;
  --reel-4-deep: #60A5FA;
  --reel-5-deep: #C084FC;

  --subj-bio: #5C2233;
  --subj-chem: #5C3E1A;
  --subj-geo: #1A4D2E;
  --subj-phys: #1A3A5C;
  --subj-cs: #5C4D1A;
  --subj-econ: #3A1A5C;
  --subj-env: #1A4D3A;
  --subj-sports: #5C3A1A;

  --accent: #FF6B8A;
  --spin-bg: #FF6B8A;
  --spin-text: #1a1a2e;
}

html {
  font-family: 'Fredoka', -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  font-size: 14px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
  height: 100%;
}

body {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

/* ── Header ── */

.header {
  width: 100%;
  max-width: 820px;
  padding: 20px 20px 0;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  opacity: 0;
  animation: fade-slide-down 0.8s ease forwards;
}

@keyframes fade-slide-down {
  from {
    opacity: 0;
    transform: translateY(-40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.header-left {
  display: flex;
  flex-direction: column;
  gap: 0;
  flex: 1;
}

.header h1 {
  font-size: 48px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--text);
  text-transform: uppercase;
  -webkit-text-stroke: 2px var(--border);
  paint-order: stroke fill;
  position: relative;
}

.tagline {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: 4px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.theme-btn {
  appearance: none;
  border: var(--border-w) solid var(--border);
  background: var(--card);
  color: var(--text);
  width: 38px;
  height: 38px;
  border-radius: var(--radius);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.15s ease;
  box-shadow: 3px 3px 0 var(--border);
}

.theme-btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 var(--border);
}

.theme-btn:active {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 var(--border);
}

.theme-btn svg {
  width: 18px;
  height: 18px;
}

/* Dark mode: show sun, hide moon */
.theme-btn .icon-sun { display: block; }
.theme-btn .icon-moon { display: none; }

/* Light mode: show moon, hide sun */
html.light .theme-btn .icon-sun { display: none; }
html.light .theme-btn .icon-moon { display: block; }

.header-nav {
  display: flex;
  gap: 0;
  border: var(--border-w) solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 3px 3px 0 var(--border);
}

.nav-btn {
  appearance: none;
  border: none;
  border-right: var(--border-w) solid var(--border);
  background: var(--card);
  color: var(--text-mid);
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  padding: 6px 18px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.nav-btn:last-child {
  border-right: none;
}

.nav-btn:hover {
  color: var(--text);
  background: var(--reel-2);
}

.nav-btn[aria-pressed="true"] {
  background: var(--accent);
  color: var(--accent-text);
}

.nav-btn:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

/* ── Main ── */

.main {
  width: 100%;
  max-width: 820px;
  padding: 16px 20px;
  flex: 1;
}

/* ── Machine ── */

.machine {
  background: var(--card);
  border: var(--border-w) solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: 5px 5px 0 var(--border);
  position: relative;
  overflow: hidden;
}

/* Halftone pattern overlay on machine */
.machine::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: var(--halftone);
  background-size: var(--halftone-size);
  opacity: 0.03;
  pointer-events: none;
  z-index: 0;
}

/* ── Subject picker (landing screen) ── */

.subject-picker {
  text-align: center;
}

.subject-picker.hidden {
  display: none;
}

.picker-label {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-mid);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
  opacity: 0;
  animation: fade-slide-down 0.5s ease 0.1s forwards;
}

.picker-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(10px, 2vw, 14px);
  max-width: 780px;
  margin: 0 auto;
}

.picker-card {
  appearance: none;
  border: var(--border-w) solid var(--border);
  background: var(--card);
  color: var(--text);
  font: inherit;
  font-size: clamp(16px, 2.5vw, 19px);
  font-weight: 700;
  padding: clamp(28px, 6vh, 36px) 10px;
  border-radius: var(--radius-lg);
  cursor: pointer;
  box-shadow: 4px 4px 0 var(--border);
  transition: all 0.15s ease;
  text-align: center;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;

  /* Drop-bounce in */
  opacity: 0;
  transform: translateY(-200px);
  animation: drop-bounce 1.2s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.picker-card:nth-child(1) { animation-delay: 0.1s; }
.picker-card:nth-child(2) { animation-delay: 0.18s; }
.picker-card:nth-child(3) { animation-delay: 0.26s; }
.picker-card:nth-child(4) { animation-delay: 0.34s; }
.picker-card:nth-child(5) { animation-delay: 0.42s; }
.picker-card:nth-child(6) { animation-delay: 0.50s; }
.picker-card:nth-child(7) { animation-delay: 0.58s; }
.picker-card:nth-child(8) { animation-delay: 0.66s; }

.picker-card[data-subject="biology"] { background: var(--subj-bio); }
.picker-card[data-subject="chemistry"] { background: var(--subj-chem); }
.picker-card[data-subject="geography"] { background: var(--subj-geo); }
.picker-card[data-subject="physics"] { background: var(--subj-phys); }
.picker-card[data-subject="compsci"] { background: var(--subj-cs); }
.picker-card[data-subject="economics"] { background: var(--subj-econ); }
.picker-card[data-subject="envsci"] { background: var(--subj-env); }
.picker-card[data-subject="sports"] { background: var(--subj-sports); }

.picker-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--border);
}

.picker-card:active {
  transform: translate(3px, 3px);
  box-shadow: 1px 1px 0 var(--border);
}

.picker-card:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

/* Tumble-out animation for cards */
.picker-card.tumble-out {
  animation: tumble-out 0.4s cubic-bezier(0.55, 0, 1, 0.45) forwards;
}

@keyframes tumble-out {
  to {
    opacity: 0;
    transform: translateY(60px) scale(0.8) rotate(3deg);
  }
}

/* ── Game header (inside machine) ── */

.game-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.back-btn {
  appearance: none;
  border: var(--border-w) solid var(--border);
  background: var(--card);
  color: var(--text);
  width: 34px;
  height: 34px;
  border-radius: var(--radius);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 2px 2px 0 var(--border);
  transition: all 0.15s ease;
  flex-shrink: 0;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.back-btn svg {
  width: 18px;
  height: 18px;
}

.back-btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: 3px 3px 0 var(--border);
}

.back-btn:active {
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0 var(--border);
}

.back-btn:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.subject-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 4px 14px;
  border-radius: var(--radius);
  border: var(--border-w) solid var(--border);
  box-shadow: 2px 2px 0 var(--border);
}

.game-header-right {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.difficulty-toggle {
  display: flex;
  gap: 0;
  border: var(--border-w) solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 2px 2px 0 var(--border);
  transition: opacity 0.2s ease;
}

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

.diff-btn {
  appearance: none;
  border: none;
  border-right: var(--border-w) solid var(--border);
  background: var(--card);
  color: var(--text-mid);
  font: inherit;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.diff-btn:last-child {
  border-right: none;
}

.diff-btn:hover {
  color: var(--text);
}

.diff-btn[aria-pressed="true"] {
  background: var(--reel-4);
  color: var(--text);
  border-color: var(--border);
}

.diff-btn:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.mode-toggle {
  display: flex;
  gap: 0;
  border: var(--border-w) solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 2px 2px 0 var(--border);
}

.mode-btn {
  appearance: none;
  border: none;
  border-right: var(--border-w) solid var(--border);
  background: var(--card);
  color: var(--text-mid);
  font: inherit;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 12px;
  cursor: pointer;
  transition: all 0.15s ease;
  letter-spacing: 0.04em;
}

.mode-btn:last-child {
  border-right: none;
}

.mode-btn:hover {
  color: var(--text);
  background: var(--reel-3);
}

.mode-btn[aria-pressed="true"] {
  background: var(--accent);
  color: var(--accent-text);
}

.mode-btn:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

/* ── Scramble mode ── */

.scramble-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: clamp(10px, 2.5vw, 15px);
  font-weight: 500;
  color: var(--text);
  width: 100%;
  height: 100%;
  padding: 4px 6px;
  word-break: break-word;
  hyphens: auto;
  line-height: 1.15;
  overflow: hidden;
  transition: all 0.3s ease;
}

.scramble-cell.shuffling {
  animation: scramble-flicker 0.08s steps(1) infinite;
}

@keyframes scramble-flicker {
  0% { opacity: 0.6; }
  50% { opacity: 1; }
}

.reel-window.scramble-mode {
  display: flex;
  align-items: center;
  justify-content: center;
}

.reel-window.scramble-mode .reel-strip,
.reel-window.scramble-mode .reel-highlight {
  display: none;
}

.reel-window.scramble-mode::before,
.reel-window.scramble-mode::after {
  display: none;
}

.reel-col.landed .scramble-cell {
  font-weight: 700;
  font-size: clamp(11px, 3vw, 17px);
  color: var(--text);
  transform: scale(1.1);
}

/* ── Reels (Manga panels) ── */

.reels-container {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  position: relative;
  z-index: 1;
}

.reel-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  opacity: 0;
  transform: translateY(-250px);
  animation: drop-bounce 1.4s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.reel-col:nth-child(1) { animation-delay: 0.2s; }
.reel-col:nth-child(2) { animation-delay: 0.44s; }
.reel-col:nth-child(3) { animation-delay: 0.68s; }
.reel-col:nth-child(4) { animation-delay: 0.92s; }
.reel-col:nth-child(5) { animation-delay: 1.16s; }

/* Assign pastel colours per reel */
.reel-col:nth-child(1) .reel-window { background: var(--reel-1); }
.reel-col:nth-child(2) .reel-window { background: var(--reel-2); }
.reel-col:nth-child(3) .reel-window { background: var(--reel-3); }
.reel-col:nth-child(4) .reel-window { background: var(--reel-4); }
.reel-col:nth-child(5) .reel-window { background: var(--reel-5); }

.reel-col:nth-child(1) .reel-cell { background: var(--reel-1); }
.reel-col:nth-child(2) .reel-cell { background: var(--reel-2); }
.reel-col:nth-child(3) .reel-cell { background: var(--reel-3); }
.reel-col:nth-child(4) .reel-cell { background: var(--reel-4); }
.reel-col:nth-child(5) .reel-cell { background: var(--reel-5); }

/* Deep accent for landed cells */
.reel-col:nth-child(1).landed .reel-cell.center-cell { background: var(--reel-1-deep); }
.reel-col:nth-child(2).landed .reel-cell.center-cell { background: var(--reel-2-deep); }
.reel-col:nth-child(3).landed .reel-cell.center-cell { background: var(--reel-3-deep); }
.reel-col:nth-child(4).landed .reel-cell.center-cell { background: var(--reel-4-deep); }
.reel-col:nth-child(5).landed .reel-cell.center-cell { background: var(--reel-5-deep); }

/* Deep accent for landed scramble cells */
.reel-col:nth-child(1).landed .scramble-cell { background: var(--reel-1-deep); }
.reel-col:nth-child(2).landed .scramble-cell { background: var(--reel-2-deep); }
.reel-col:nth-child(3).landed .scramble-cell { background: var(--reel-3-deep); }
.reel-col:nth-child(4).landed .scramble-cell { background: var(--reel-4-deep); }
.reel-col:nth-child(5).landed .scramble-cell { background: var(--reel-5-deep); }

@keyframes drop-bounce {
  0% {
    opacity: 0;
    transform: translateY(-250px) scale(0.8) rotate(-3deg);
  }
  30% {
    opacity: 1;
    transform: translateY(28px) scale(1.05) rotate(1deg);
  }
  45% {
    transform: translateY(-20px) scale(0.97) rotate(-0.5deg);
  }
  58% {
    transform: translateY(12px) scale(1.02) rotate(0.3deg);
  }
  70% {
    transform: translateY(-6px) scale(0.99);
  }
  82% {
    transform: translateY(3px) scale(1.005);
  }
  92% {
    transform: translateY(-1px);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1) rotate(0deg);
  }
}

.reel-label {
  font-size: clamp(8px, 1.6vw, 11px);
  font-weight: 600;
  color: var(--text-mid);
  text-align: center;
  white-space: normal;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  line-height: 1.2;
  min-height: 2em;
  display: flex;
  align-items: center;
  justify-content: center;
}

.reel-window {
  width: 100%;
  height: 168px;
  overflow: hidden;
  border-radius: var(--radius);
  position: relative;
  border: var(--border-w) solid var(--border);
  box-shadow: 3px 3px 0 var(--border);
}

/* Fade overlays top/bottom */
.reel-window::before,
.reel-window::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  z-index: 3;
  pointer-events: none;
}

.reel-window::before {
  top: 0;
  height: 56px;
  background: linear-gradient(to bottom,
    rgba(var(--fade-rgb), 0.9) 0%,
    rgba(var(--fade-rgb), 0.5) 50%,
    transparent 100%
  );
}

.reel-window::after {
  bottom: 0;
  height: 56px;
  background: linear-gradient(to top,
    rgba(var(--fade-rgb), 0.9) 0%,
    rgba(var(--fade-rgb), 0.5) 50%,
    transparent 100%
  );
}

.reel-strip {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  will-change: transform;
}

.reel-cell {
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: clamp(9px, 2vw, 13px);
  font-weight: 500;
  line-height: 1.15;
  padding: 4px 4px;
  word-break: break-word;
  hyphens: auto;
  overflow: hidden;
  color: var(--text);
  border-bottom: var(--border-w) solid var(--border);
  position: relative;
  transition: all 0.4s ease;
}

/* Center row highlight bar */
.reel-highlight {
  position: absolute;
  top: 55px;
  left: 0;
  right: 0;
  height: 58px;
  z-index: 2;
  border-top: var(--border-w) solid var(--border);
  border-bottom: var(--border-w) solid var(--border);
  pointer-events: none;
  transition: all 0.3s ease;
}

/* ── Landed state ── */

.reel-col.landed .reel-highlight {
  border-color: var(--border);
  box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.1);
}

.reel-col.landed .reel-cell.center-cell {
  font-weight: 700;
  font-size: clamp(11px, 2.5vw, 15px);
  color: var(--text);
  transform: scale(1.08);
  z-index: 4;
  box-shadow: 0 3px 0 var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.reel-col.landed .reel-label {
  color: var(--text);
  font-weight: 700;
}

/* ── Controls ── */

.controls-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 20px;
  opacity: 0;
  animation: fade-up 0.6s ease 2.2s forwards;
  position: relative;
  z-index: 1;
}

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

.spin-btn {
  appearance: none;
  border: var(--border-w) solid var(--border);
  background: var(--spin-bg);
  color: var(--spin-text);
  font: inherit;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.14em;
  padding: 10px 44px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.15s ease;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  box-shadow: 4px 4px 0 var(--border);
  text-transform: uppercase;
}

.spin-btn:hover:not(:disabled) {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--border);
}

.spin-btn:active:not(:disabled) {
  transform: translate(3px, 3px);
  box-shadow: 1px 1px 0 var(--border);
}

.spin-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.spin-btn:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.spin-btn.spinning {
  animation: btn-pulse 0.8s ease-in-out infinite;
}

@keyframes btn-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.04); }
}

.sound-btn {
  appearance: none;
  border: var(--border-w) solid var(--border);
  background: var(--card);
  color: var(--text);
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
  box-shadow: 2px 2px 0 var(--border);
}

.sound-btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: 3px 3px 0 var(--border);
}

.sound-btn:active {
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0 var(--border);
}

.sound-btn:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.sound-btn svg {
  width: 18px;
  height: 18px;
}

.round-counter {
  font-size: 13px;
  color: var(--text-mid);
  font-weight: 600;
}

/* ── Example panel ── */

.example-panel {
  margin-top: 16px;
  border: var(--border-w) dashed var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  z-index: 1;
  opacity: 0;
  animation: fade-up 0.6s ease 2.3s forwards;
}

.example-toggle {
  appearance: none;
  border: none;
  background: var(--card);
  color: var(--text-mid);
  font: inherit;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 8px 16px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.example-toggle:hover {
  color: var(--text);
  background: var(--reel-2);
}

.example-chevron {
  width: 14px;
  height: 14px;
  transition: transform 0.25s ease;
}

.example-panel.open .example-chevron {
  transform: rotate(180deg);
}

.example-body {
  display: none;
  padding: 14px 16px 16px;
  border-top: var(--border-w) dashed var(--border);
}

.example-panel.open .example-body {
  display: block;
}

.example-chain {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 4px 2px;
  margin-bottom: 12px;
}

.example-word {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
  padding: 3px 10px;
  border: var(--border-w) solid var(--border);
  border-radius: 6px;
  box-shadow: 2px 2px 0 var(--border);
}

.example-word:nth-child(5n+1) { background: var(--reel-1); }
.example-word:nth-child(5n+2) { background: var(--reel-2); }
.example-word:nth-child(5n+3) { background: var(--reel-3); }
.example-word:nth-child(5n+4) { background: var(--reel-4); }
.example-word:nth-child(5n+5) { background: var(--reel-5); }

.example-arrow {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-muted);
  padding: 0 2px;
  line-height: 1;
}

.example-explanation {
  font-size: 13px;
  font-weight: 400;
  color: var(--text-mid);
  line-height: 1.65;
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.example-hint {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-align: center;
  margin-top: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ── Timer ── */

.timer-row {
  margin-top: 20px;
  padding-top: 16px;
  border-top: var(--border-w) dashed var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  opacity: 0;
  animation: fade-up 0.6s ease 2.5s forwards;
  position: relative;
  z-index: 1;
}

.clock-panel {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 10px 14px;
  background: var(--card);
  border: var(--border-w) solid var(--border);
  border-radius: var(--radius);
  box-shadow: 3px 3px 0 var(--border);
}

.clock-digit-group {
  display: flex;
  gap: 4px;
}

.clock-digit {
  font-family: 'Share Tech Mono', monospace;
  font-size: 48px;
  font-weight: 400;
  line-height: 1;
  width: 40px;
  text-align: center;
  color: var(--text);
  background: var(--reel-2);
  border: var(--border-w) solid var(--border);
  border-radius: 6px;
  padding: 6px 0;
  position: relative;
  transition: color 0.3s ease;
  box-shadow: 2px 2px 0 var(--border);
}

/* Horizontal split line (flip clock seam) */
.clock-digit::after {
  content: "";
  position: absolute;
  left: 2px;
  right: 2px;
  top: 50%;
  height: 2px;
  background: var(--border);
  opacity: 0.3;
}

.clock-colon {
  font-family: 'Share Tech Mono', monospace;
  font-size: 44px;
  font-weight: 400;
  line-height: 1;
  color: var(--text);
  padding: 0 2px;
  animation: colon-blink 1s step-end infinite;
}

@keyframes colon-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.2; }
}

/* Warning state */
.clock-panel.warning .clock-digit {
  background: var(--reel-1-deep);
  color: var(--text);
}

.clock-panel.warning .clock-colon {
  color: var(--accent);
}

.timer-bar-track {
  width: 100%;
  max-width: 280px;
  height: 6px;
  background: var(--card);
  border: var(--border-w) solid var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.timer-bar-fill {
  height: 100%;
  width: 100%;
  background: var(--reel-3-deep);
  border-radius: 2px;
  transition: width 1s linear, background 0.3s;
}

.timer-bar-fill.warning {
  background: var(--accent);
}

.timer-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}

.timer-btn {
  appearance: none;
  border: var(--border-w) solid var(--border);
  background: var(--card);
  color: var(--text);
  font: inherit;
  font-size: 12px;
  font-weight: 600;
  padding: 8px 20px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.15s ease;
  letter-spacing: 0.04em;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  min-height: 44px;
  box-shadow: 2px 2px 0 var(--border);
}

.timer-btn:hover {
  background: var(--reel-4);
  transform: translate(-1px, -1px);
  box-shadow: 3px 3px 0 var(--border);
}

.timer-btn:active {
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0 var(--border);
}

.timer-btn:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.timer-btn-secondary {
  color: var(--text-mid);
}

.timer-btn-secondary:hover {
  background: var(--reel-3);
  color: var(--text);
}

/* ── Rules ── */

.rules {
  display: none;
}

.rules.active {
  display: block;
  background: var(--card);
  border: var(--border-w) solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: 5px 5px 0 var(--border);
}

.machine.hidden {
  display: none;
}

.rules h2 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
  color: var(--text);
}

.rules ol {
  padding-left: 20px;
  margin-bottom: 28px;
}

.rules li {
  margin-bottom: 10px;
  color: var(--text-mid);
  line-height: 1.7;
}

.rules li strong {
  color: var(--text);
  font-weight: 700;
}

.rules .callout {
  border-left: 4px solid var(--accent);
  padding: 16px 20px;
  background: var(--reel-1);
  border-radius: 0 var(--radius) var(--radius) 0;
  border: var(--border-w) solid var(--border);
  border-left: 4px solid var(--accent);
}

.rules .callout h3 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text);
}

.rules .callout p {
  font-size: 13px;
  color: var(--text-mid);
  line-height: 1.7;
}

/* ── Live region (sr-only) ── */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ── Reduced motion ── */

@media (prefers-reduced-motion: reduce) {
  .reel-strip {
    transition: none !important;
  }
  .reel-cell {
    transition: none !important;
  }
  .spin-btn:hover:not(:disabled),
  .timer-btn:hover {
    transform: none;
  }
  .spin-btn.spinning {
    animation: none;
  }
  .reel-col,
  .header,
  .controls-row,
  .timer-row,
  .picker-card,
  .picker-label {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
  .clock-colon {
    animation: none;
  }
}

/* ── Force landscape on mobile ── */

.rotate-notice {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--bg);
  color: var(--text);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  text-align: center;
  padding: 24px;
}

.rotate-notice svg {
  width: 48px;
  height: 48px;
  color: var(--text-mid);
  animation: rotate-hint 2s ease-in-out infinite;
}

@keyframes rotate-hint {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(90deg); }
}

.rotate-notice p {
  font-size: 18px;
  font-weight: 600;
}

.rotate-notice span {
  font-size: 13px;
  color: var(--text-mid);
}

@media (max-width: 600px) and (orientation: portrait) {
  .rotate-notice {
    display: flex;
  }

  .header, .main {
    display: none;
  }
}

/* ── Responsive: landscape mobile & small screens ── */

@media (max-height: 500px) {
  .header {
    padding: 4px 12px 0;
  }

  .header h1 {
    font-size: 22px;
    -webkit-text-stroke: 1px var(--border);
  }

  .tagline {
    display: none;
  }

  .main {
    padding: 4px 12px 8px;
  }

  .machine {
    padding: 8px 10px;
    box-shadow: 3px 3px 0 var(--border);
  }

  .picker-grid {
    gap: 6px;
  }

  .picker-card {
    font-size: clamp(13px, 2.2vw, 16px);
    padding: clamp(14px, 4vh, 22px) 6px;
    border-radius: var(--radius);
    box-shadow: 2px 2px 0 var(--border);
  }

  .picker-label {
    font-size: 12px;
    margin-bottom: 8px;
  }

  .game-header {
    margin-bottom: 6px;
    gap: 6px;
  }

  .back-btn {
    width: 28px;
    height: 28px;
  }

  .back-btn svg {
    width: 14px;
    height: 14px;
  }

  .subject-name {
    font-size: 11px;
    padding: 2px 8px;
    box-shadow: 1px 1px 0 var(--border);
  }

  .diff-btn {
    font-size: 10px;
    padding: 2px 8px;
  }

  .difficulty-toggle {
    box-shadow: 1px 1px 0 var(--border);
  }

  .mode-btn {
    font-size: 10px;
    padding: 2px 8px;
  }

  .mode-toggle {
    box-shadow: 1px 1px 0 var(--border);
  }

  .reels-container {
    gap: 6px;
  }

  .reel-col {
    gap: 3px;
  }

  .reel-window {
    height: 108px;
    box-shadow: 2px 2px 0 var(--border);
  }

  .reel-cell {
    height: 36px;
  }

  .reel-window::before,
  .reel-window::after {
    height: 36px;
  }

  .reel-highlight {
    top: 35px;
    height: 38px;
  }

  .reel-label {
    font-size: clamp(6px, 1.4vw, 9px);
    min-height: 1.6em;
    letter-spacing: 0.02em;
  }

  .controls-row {
    margin-top: 8px;
    gap: 8px;
  }

  .spin-btn {
    padding: 5px 24px;
    font-size: 13px;
    box-shadow: 2px 2px 0 var(--border);
  }

  .sound-btn {
    width: 32px;
    height: 32px;
    box-shadow: 1px 1px 0 var(--border);
  }

  .round-counter {
    font-size: 11px;
  }

  .example-panel {
    margin-top: 6px;
  }

  .example-toggle {
    padding: 4px 12px;
    font-size: 10px;
  }

  .example-body {
    padding: 8px 12px 10px;
  }

  .example-word {
    font-size: 10px;
    padding: 2px 6px;
    box-shadow: 1px 1px 0 var(--border);
  }

  .example-arrow {
    font-size: 12px;
  }

  .example-explanation {
    font-size: 11px;
    line-height: 1.5;
  }

  .timer-row {
    margin-top: 8px;
    padding-top: 8px;
    gap: 6px;
  }

  .clock-panel {
    padding: 4px 8px;
    box-shadow: 2px 2px 0 var(--border);
  }

  .clock-digit {
    font-size: 22px;
    width: 20px;
    padding: 3px 0;
    box-shadow: 1px 1px 0 var(--border);
  }

  .clock-colon {
    font-size: 18px;
  }

  .timer-controls {
    gap: 4px;
  }

  .timer-btn {
    font-size: 11px;
    padding: 3px 12px;
    box-shadow: 1px 1px 0 var(--border);
  }

  .timer-bar-track {
    max-width: 200px;
    height: 4px;
  }
}

@media (max-width: 559px) {
  .reels-container {
    gap: 5px;
  }

  .reel-cell {
    font-size: 10px;
  }

  .reel-label {
    font-size: clamp(7px, 1.5vw, 10px);
  }

  .header h1 {
    font-size: 32px;
  }

  .reel-col.landed .reel-cell.center-cell {
    font-size: 12px;
  }

  .clock-digit {
    font-size: 32px;
    width: 28px;
  }

  .clock-colon {
    font-size: 28px;
  }
}