/* Base tokens that scale with viewport */
:root {
  --vmin: min(100vw, 100vh);
  --gap: clamp(8px, 1.6vmin, 20px);
  --radius: clamp(12px, 2.4vmin, 24px);
  --border: clamp(1px, 0.35vmin, 3px);
  --header-h: clamp(36px, 5vmin, 48px);
  --page-pad: var(--gap);

  --font-big: clamp(32px, 12vmin, 120px);
  --font-option: clamp(14px, 3.4vmin, 28px);

  --bg: #0f172a;
  /* slate-900 */
  --bg-soft: #111827;
  /* gray-900 */
  --card: #0b1220;
  /* deep panel */
  --text: #e5e7eb;
  /* gray-200 */
  --muted: #94a3b8;
  /* slate-400 */
  --accent: #60a5fa;
  /* blue-400 */
  --accent-weak: rgba(96, 165, 250, 0.2);
  --border-color: rgba(148, 163, 184, 0.35);
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
  /* subtle hover bg for ghost buttons (dark default) */
  --hover-ghost: rgba(148, 163, 184, 0.15);

  /* Aliases used by config/settings UI (map to existing tokens) */
  --bg-primary: var(--bg-soft);
  --bg-secondary: var(--card);
  --text-primary: var(--text);
  --text-secondary: var(--muted);
  --accent-primary: var(--accent);
  --accent-secondary: var(--accent);
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  padding: calc(env(safe-area-inset-top) + var(--page-pad)) var(--gap) calc(env(safe-area-inset-bottom) + var(--page-pad));
  background: radial-gradient(1200px 800px at 20% 10%, #0b1220 0%, var(--bg) 50%, #0a0f1d 100%);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Noto Sans, Ubuntu, Cantarell, Helvetica Neue, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  /* display: grid; */
  place-items: center;
}

/* Game layout */
.game {
  /* Keep both rows within one viewport: W <= ~0.8 * available height */
  width: min(96vw,
      calc(74vh - var(--header-h) - (2 * var(--page-pad)) - env(safe-area-inset-top) - env(safe-area-inset-bottom)));
  display: grid;
  grid-template-rows: auto auto;
  gap: var(--gap);
}

.card {
  border: var(--border) solid var(--border-color);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0)), var(--card);
  box-shadow: var(--shadow);
  position: relative;
  overflow: clip;
}

.square {
  width: 100%;
  aspect-ratio: 1 / 1;
  display: grid;
  place-items: center;
}

/* Config Modal Styles */
.config-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.config-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
}

.config-content {
  position: relative;
  background: var(--bg-primary);
  border-radius: 1.5rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  width: 90%;
  max-width: 480px;
  max-height: 80vh;
  overflow: hidden;
  z-index: 1001;
}

.config-header {
  padding: 2rem 2rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

.config-header h1 {
  margin: 0;
  color: var(--text-primary);
  font-size: 1.8rem;
  font-weight: 600;
  text-align: center;
}

.config-body {
  padding: 2rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  font-weight: 500;
  font-size: 1.1rem;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 2px solid var(--border-color);
  border-radius: 0.75rem;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 1rem;
  transition: border-color 0.2s ease, background-color 0.2s ease;
  box-sizing: border-box;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent-primary);
  background: var(--bg-primary);
}

.start-button {
  width: 100%;
  padding: 1rem 2rem;
  background: var(--accent-primary);
  color: white;
  border: none;
  border-radius: 0.75rem;
  font-size: 1.2rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.1s ease;
  margin-top: 1rem;
}

.start-button:hover {
  background: var(--accent-secondary);
  transform: translateY(-1px);
}

.start-button:active {
  transform: translateY(0);
}

/* Settings button */
.settings-toggle {
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.2rem;
  padding: 0.5rem;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: background-color 0.2s ease;
  margin-right: 0.5rem;
}

.settings-toggle:hover {
  background-color: var(--bg-secondary);
}

/* Settings popup */
.settings-popup {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.settings-content {
  background: var(--bg-primary);
  border-radius: 1rem;
  width: 90%;
  max-width: 400px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.settings-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 1.5rem 0;
}

.settings-header h2 {
  margin: 0;
  color: var(--text-primary);
  font-size: 1.5rem;
}

.close-button {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 0.25rem;
  transition: background-color 0.2s ease;
}

.close-button:hover {
  background-color: var(--bg-secondary);
}

.settings-body {
  padding: 1.5rem;
}

.setting-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.setting-label {
  color: var(--text-primary);
  font-weight: 500;
}

.setting-description {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 0;
  line-height: 1.4;
}

/* Toggle switch */
.toggle-switch {
  position: relative;
  width: 50px;
  height: 26px;
}

.toggle-input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg-secondary);
  transition: 0.3s;
  border-radius: 26px;
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: 0.3s;
  border-radius: 50%;
}

.toggle-input:checked+.toggle-slider {
  background-color: var(--accent-primary);
}

.toggle-input:checked+.toggle-slider:before {
  transform: translateX(24px);
}

/* Hard mode input section */
.input-section {
  display: flex;
  gap: 1rem;
  width: 100%;
  max-width: 400px;
  margin: 2rem auto 0;
}

.answer-input {
  flex: 1;
  padding: 1rem;
  border: 2px solid var(--border-color);
  border-radius: 0.75rem;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 1.1rem;
  transition: border-color 0.2s ease;
}

.answer-input:focus {
  outline: none;
  border-color: var(--accent-primary);
}

.submit-button {
  padding: 1rem 1.5rem;
  background: var(--accent-primary);
  color: white;
  border: none;
  border-radius: 0.75rem;
  font-size: 1.1rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.submit-button:hover {
  background: var(--accent-secondary);
}

.submit-button:disabled {
  background: var(--bg-secondary);
  cursor: not-allowed;
}

.hidden {
  display: none !important;
}

/* Typing feedback text below input */
/* Small correct-answer hint inside prompt */
.prompt .answer-hint {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: clamp(10px, 2.5vmin, 18px);
  font-size: clamp(12px, 2.6vmin, 18px);
  line-height: 1.2;
  color: rgba(255, 255, 255, 0.92);
  white-space: nowrap;
  pointer-events: none;
  text-shadow: 0 1px 0 rgba(0,0,0,0.25);
}

/* Prompt (big square) */
.prompt {
  padding: calc(var(--gap) * 0.5);
}

.prompt-text {
  font-size: var(--font-big);
  line-height: 1;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-shadow: 0 2px 0 rgba(0, 0, 0, 0.15);
}

/* Right arrow hint shown after correct answer */
.prompt .next-arrow {
  position: absolute;
  right: clamp(8px, 1.6vmin, 16px);
  top: 50%;
  transform: translateY(-50%) translateX(6px);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease, transform 200ms ease;
  filter: drop-shadow(0 1px 0 rgba(0, 0, 0, 0.25));
}

/* Make the arrow icon larger */
.prompt .next-arrow svg {
  width: 40px;
  height: 40px;
}

.prompt.correct .next-arrow,
.prompt.wrong .next-arrow {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
  color: #ffffff;
  /* better contrast on green background */
}

/* Make the arrow much larger and bolder */
.prompt .next-arrow svg {
  width: clamp(56px, 10vmin, 96px);
  height: clamp(56px, 10vmin, 96px);
}

.prompt .next-arrow svg path {
  stroke-width: 2.75;
}

/* Options grid */
.options {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap);
}

.option {
  cursor: pointer;
  border: var(--border) solid var(--border-color);
  color: var(--text);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0)), var(--bg-soft);
  transition: transform 120ms ease, box-shadow 120ms ease, border-color 120ms ease, background-color 120ms ease;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.option:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
  border-color: rgba(148, 163, 184, 0.55);
}

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

.option:active {
  transform: translateY(0);
}

.option-text {
  font-size: var(--font-option);
  font-weight: 600;
  color: var(--text);
}

/* Optional state helpers for your JS */
.option.correct {
  border-color: rgba(34, 197, 94, 0.7);
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.25) inset;
}

.option.wrong {
  border-color: rgba(239, 68, 68, 0.7);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.25) inset;
}

.option[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Light theme (auto if user prefers) */
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7fafc;
    --bg-soft: #ffffff;
    --card: #ffffff;
    --text: #0f172a;
    --muted: #475569;
    --border-color: rgba(15, 23, 42, 0.12);
    --shadow: 0 8px 30px rgba(2, 6, 23, 0.08);
  }

  body {
    background: radial-gradient(1200px 800px at 80% -20%, #eef2ff 0%, #f8fafc 45%, #ffffff 100%);
  }
}

/* Top bar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  width: 100%;
  display: grid;
  place-items: center;
  margin-bottom: var(--gap);
}

.topbar-wrap {
  height: var(--header-h);
  width: min(96vw, 820px);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
}

/* Centered script dropdown (borderless with left chevron) */
.script-select {
  justify-self: center;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: calc(var(--header-h) - 10px);
  padding: 0 6px;
  border-radius: 999px;
  color: var(--muted);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

/* Keep text color steady; use background instead */

.script-select .chevron {
  font-size: 0.9rem;
  line-height: 1;
}

/* Button that displays current selection */
.script-button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 100%;
  width: 120px;
  /* fixed width as requested */
  padding: 0 10px 0 6px;
  background: transparent;
  color: inherit;
  font: inherit;
  border: none;
  outline: none;
  cursor: pointer;
  border-radius: 999px;
  transition: background-color 120ms ease;
}

.script-button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 12px;
}

.script-value {
  font-weight: 600;
}

.script-button .script-value {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

/* Background hover for both themes */
.script-select:hover .script-button,
.script-select:focus-within .script-button,
.script-select.open .script-button {
  background-color: var(--hover-ghost);
}

/* Dropdown list */
.script-select {
  position: relative;
}

.script-list[hidden] {
  display: none;
}

.script-list {
  position: absolute;
  top: 100%;
  left: 0;
  transform: translateY(6px);
  min-width: 140px;
  padding: 6px;
  margin: 0;
  list-style: none;
  border-radius: 12px;
  border: var(--border) solid var(--border-color);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.0)), var(--bg-soft);
  box-shadow: var(--shadow);
  z-index: 20;
}

.script-list [role="option"] {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 34px;
  padding: 0 10px;
  border-radius: 8px;
  cursor: pointer;
  white-space: nowrap;
  color: var(--text);
}

.script-list [role="option"][aria-selected="true"] {
  background: var(--accent-weak);
}

.script-list [role="option"]:hover,
.script-list [role="option"]:focus {
  background: var(--accent-weak);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: calc(var(--header-h) - 10px);
  min-width: calc(var(--header-h) - 10px);
  padding: 0 12px;
  border-radius: 999px;
  border: var(--border) solid var(--border-color);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0)), var(--bg-soft);
  color: var(--text);
  cursor: pointer;
  transition: transform 120ms ease, box-shadow 120ms ease, border-color 120ms ease;
}

.theme-toggle:hover {
  transform: translateY(-1px);
}

.theme-toggle:active {
  transform: translateY(0);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.theme-toggle .icon {
  font-size: 1rem;
  line-height: 1;
}

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

/* Elapsed time display (left side) */
.timer {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: calc(var(--header-h) - 10px);
  padding: 0 12px;
  border-radius: 999px;
  border: var(--border) solid var(--border-color);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0)), var(--bg-soft);
  color: var(--text);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-weight: 600;
}

.timer::before {
  content: "⏱️";
  display: inline-block;
  margin-right: 8px;
  font-size: 1rem;
  line-height: 1;
}

/* Show only the active icon by current theme */
/* Default to dark */
.theme-toggle .sun {
  display: none;
}

.theme-toggle .moon {
  display: inline;
}

:root[data-theme="light"] .theme-toggle .sun {
  display: inline;
}

:root[data-theme="light"] .theme-toggle .moon {
  display: none;
}

/* Explicit theme overrides (take precedence over media) */
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0f172a;
  --bg-soft: #111827;
  --card: #0b1220;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --accent: #60a5fa;
  --accent-weak: rgba(96, 165, 250, 0.2);
  --border-color: rgba(148, 163, 184, 0.35);
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
  --hover-ghost: rgba(148, 163, 184, 0.15);
}

:root[data-theme="dark"] body {
  background: radial-gradient(1200px 800px at 20% 10%, #0b1220 0%, var(--bg) 50%, #0a0f1d 100%);
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f7fafc;
  --bg-soft: #ffffff;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --accent: #2563eb;
  --accent-weak: rgba(37, 99, 235, 0.12);
  --border-color: rgba(15, 23, 42, 0.12);
  --shadow: 0 8px 30px rgba(2, 6, 23, 0.08);
  --hover-ghost: rgba(15, 23, 42, 0.06);
}

:root[data-theme="light"] body {
  background: radial-gradient(1200px 800px at 80% -20%, #eef2ff 0%, #f8fafc 45%, #ffffff 100%);
}

/* Bottom bar */
.bottombar {
  position: sticky;
  bottom: 0;
  z-index: 10;
  width: 100%;
  display: grid;
  place-items: center;
  /* margin-top: var(--gap); */
}

.bottombar-wrap {
  width: min(96vw, 820px);
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--gap) * 0.75);
}

.stat {
  display: grid;
  gap: 6px;
}

.stat-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.95rem;
}

.stat-value {
  color: var(--text);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}

.progress {
  height: 12px;
  width: 100%;
  border-radius: 999px;
  border: var(--border) solid var(--border-color);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0)), var(--bg-soft);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, rgba(96, 165, 250, 0.9), rgba(96, 165, 250, 0.7));
  transition: width 200ms ease;
}

.progress-fill.alt {
  background: linear-gradient(90deg, rgba(16, 185, 129, 0.9), rgba(16, 185, 129, 0.7));
}

/* Status themes: apply to any box (prompt/option/card) */
.correct {
  background: #16a34a !important;
  /* green-600 */
  color: #ffffff !important;
  /* always white text */
  border-color: #16a34a !important;
}

.select,
.ready {
  background: #f59e0b !important;
  /* amber-500 */
  color: #ffffff !important;
  /* always white text */
  border-color: #f59e0b !important;
}

.wrong {
  background: #ef4444 !important;
  /* red-500 */
  color: #ffffff !important;
  /* always white text */
  border-color: #ef4444 !important;
}

/* Ensure nested text uses white regardless of component defaults */
.success .option-text,
.select .option-text,
.fail .option-text,
.success .prompt-text,
.select .prompt-text,
.fail .prompt-text {
  color: #ffffff !important;
}