@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;700&family=IBM+Plex+Serif:ital,wght@0,400;0,500;1,400&display=swap');

:root {
  --ls-bg:          #f7f4ef;
  --ls-text:        #2d2926;
  --ls-text-muted:  #6b625a;
  --ls-accent:      #7a9e87;
  --ls-accent-dark: #4a7a5e;
  --ls-accent-2:    #c4a882;
  --ls-accent-3:    #c98b8b;
  --ls-border:      #ddd5c8;
  --ls-canvas-bg:   #ede9e3;
  --ls-overlay-bg:  rgba(247, 244, 239, 0.94);
}

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

body {
  background: var(--ls-bg);
  color: var(--ls-text);
  font-family: 'IBM Plex Serif', Georgia, serif;
  font-size: 1.1rem;
  line-height: 1.75;
  min-height: 100vh;
}

/* ── Article layout ─────────────────────────────────────────── */

.ls-article {
  max-width: 680px;
  margin: 0 auto;
  padding: 4rem 1.5rem 2rem;
}

/* ── Header ──────────────────────────────────────────────────── */

.ls-header {
  margin-bottom: 2rem;
}

.ls-header h1 {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 2rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.ls-lead {
  font-style: italic;
  color: var(--ls-text-muted);
  font-size: 1.1rem;
}

/* ── Prose sections ──────────────────────────────────────────── */

.ls-prose {
  margin-bottom: 2.5rem;
}

.ls-prose p {
  margin-bottom: 1.2rem;
}

.ls-prose p:last-child {
  margin-bottom: 0;
}

.ls-prose--intro {
  margin-bottom: 1.5rem;
}

/* Interlude subheadings */
.ls-interlude-heading {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--ls-text);
  margin-bottom: 0.75rem;
}

/* Interludes and outro sit between/after game stages */
.ls-interlude,
.ls-outro {
  margin-top: 2.5rem;
  margin-bottom: 2rem;
  padding-top: 2rem;
}

/* ── Lock/unlock transitions ─────────────────────────────────── */

/* Locked sections are hidden — JS removes this class to reveal them */
.ls-locked {
  display: none;
}

/* ── Rules gate ──────────────────────────────────────────────── */

.ls-rules {
  margin-bottom: 2.5rem;
  padding: 1.5rem;
  border: 1px solid var(--ls-border);
  border-radius: 4px;
  background: var(--ls-canvas-bg);
}

.ls-rules-heading {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 0.85rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--ls-text-muted);
  margin-bottom: 0.6rem;
}

.ls-rules-intro {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 0.9rem;
  color: var(--ls-text-muted);
  margin-bottom: 1rem;
}

.ls-checklist {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 1.25rem;
}

.ls-check-label {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  cursor: pointer;
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 0.95rem;
  line-height: 1.45;
  color: var(--ls-text);
}

/* Hide the native checkbox */
.ls-check {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

/* Custom checkbox box */
.ls-check-box {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 0.1em;
  border: 1.5px solid var(--ls-border);
  border-radius: 3px;
  background: var(--ls-bg);
  transition: background 0.15s, border-color 0.15s;
  position: relative;
}

/* Checkmark via pseudo-element */
.ls-check-box::after {
  content: '';
  position: absolute;
  display: none;
  left: 4px;
  top: 1px;
  width: 6px;
  height: 10px;
  border: 2px solid #fff;
  border-top: none;
  border-left: none;
  transform: rotate(45deg);
}

.ls-check:checked + .ls-check-box {
  background: var(--ls-accent);
  border-color: var(--ls-accent);
}

.ls-check:checked + .ls-check-box::after {
  display: block;
}

.ls-check-label:hover .ls-check-box {
  border-color: var(--ls-accent);
}

/* Collapse the rules gate once confirmed */
.ls-rules-done {
  display: none;
}

.ls-btn:disabled {
  background: var(--ls-border);
  color: var(--ls-text-muted);
  cursor: not-allowed;
}

/* ── Game section ─────────────────────────────────────────────── */

.ls-game-section {
  margin-bottom: 0.5rem;
}

.ls-stage-label {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--ls-text-muted);
  margin-bottom: 0.75rem;
}

.ls-stage-detail {
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  font-size: 0.85rem;
}

/* ── Canvas wrapper ───────────────────────────────────────────── */

.ls-canvas-wrapper {
  position: relative;
  border: 1px solid var(--ls-border);
  border-radius: 4px;
  overflow: hidden;
  touch-action: none;
}

.ls-canvas {
  display: block;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  background: var(--ls-canvas-bg);
}

/* ── Game overlay ─────────────────────────────────────────────── */

.ls-overlay {
  position: absolute;
  inset: 0;
  background: var(--ls-overlay-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(2px);
}

.ls-overlay[hidden] {
  display: none;
}

.ls-overlay-content {
  text-align: center;
  padding: 2rem;
}

.ls-overlay-title {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 1.4rem;
  font-weight: 500;
  margin-bottom: 0.4rem;
}

.ls-overlay-sub {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 0.85rem;
  color: var(--ls-text-muted);
  margin-bottom: 1.25rem;
}

.ls-final-score {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  color: var(--ls-text-muted);
  margin-bottom: 1.25rem;
}

.ls-btn {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 0.9rem;
  font-weight: 500;
  background: var(--ls-accent);
  color: #fff;
  border: none;
  border-radius: 3px;
  padding: 0.55rem 1.4rem;
  cursor: pointer;
  letter-spacing: 0.02em;
  transition: background 0.15s;
}

.ls-btn:hover {
  background: var(--ls-accent-dark);
}

/* ── Score bar ───────────────────────────────────────────────── */

.ls-scorebar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 0.5rem 0 0;
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 0.85rem;
  color: var(--ls-text-muted);
  padding: 0 2px;
}

.ls-target-display {
  font-weight: 500;
  color: var(--ls-accent);
}

.ls-delay-indicator {
  font-weight: 500;
}

.ls-delay-indicator[data-level="low"]    { color: var(--ls-accent); }
.ls-delay-indicator[data-level="medium"] { color: var(--ls-accent-2); }
.ls-delay-indicator[data-level="high"]   { color: var(--ls-accent-3); }

/* ── Speed toggle ─────────────────────────────────────────────── */

.ls-speed-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.6rem;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
}

.ls-speed-check {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.ls-speed-track {
  position: relative;
  width: 32px;
  height: 18px;
  background: var(--ls-border);
  border-radius: 9px;
  flex-shrink: 0;
  transition: background 0.2s;
}

.ls-speed-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 12px;
  height: 12px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.2s;
}

.ls-speed-check:checked + .ls-speed-track {
  background: var(--ls-accent);
}

.ls-speed-check:checked + .ls-speed-track .ls-speed-thumb {
  transform: translateX(14px);
}

.ls-speed-label {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 0.8rem;
  color: var(--ls-text-muted);
}

/* Centered variant used above the try-again button in the death pane */
.ls-speed-toggle--centered {
  justify-content: center;
  margin-bottom: 0.9rem;
}

/* ── Mobile D-pad ─────────────────────────────────────────────── */

.ls-dpad {
  display: none;
  grid-template-columns: repeat(3, 52px);
  grid-template-rows: repeat(3, 52px);
  gap: 4px;
  justify-content: center;
  margin: 1rem auto 0;
}

.ls-dpad-btn {
  background: var(--ls-canvas-bg);
  border: 1px solid var(--ls-border);
  border-radius: 4px;
  font-size: 1.25rem;
  cursor: pointer;
  color: var(--ls-text);
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  transition: background 0.1s;
}

.ls-dpad-btn:active {
  background: var(--ls-border);
}

/* ── Give up button ───────────────────────────────────────────── */

.ls-giveup-btn {
  display: block;
  margin-top: 0.6rem;
  margin-inline: auto;
  background: transparent;
  color: var(--ls-text-muted);
  border: 1px solid var(--ls-border);
  font-size: 0.8rem;
  padding: 0.4rem 1rem;
}

.ls-giveup-btn:hover {
  background: var(--ls-border);
  color: var(--ls-text);
}

/* ── Reflection ───────────────────────────────────────────────── */

.ls-reflection {
  border-top: 1px solid var(--ls-border);
  padding-top: 2.5rem;
  margin-top: 2.5rem;
  margin-bottom: 3rem;
}

.ls-reflection-stats {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 0.9rem;
  color: var(--ls-text-muted);
  margin-bottom: 1.25rem;
}

.ls-reflection h2 {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 0.85rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--ls-text-muted);
  margin-bottom: 1.25rem;
}

.ls-reflection ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.ls-reflection li {
  padding-left: 1.25rem;
  position: relative;
  font-size: 1rem;
}

.ls-reflection li::before {
  content: '·';
  position: absolute;
  left: 0;
  color: var(--ls-accent);
  font-size: 1.2rem;
  line-height: 1.6;
}

/* ── Footer ──────────────────────────────────────────────────── */

.ls-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding-top: 1rem;
}

.ls-logo {
  width: 80px;
}

.ls-logo:hover {
  opacity: 0.9;
}

/* ── Debug toggle ────────────────────────────────────────────── */

.ls-debug-toggle {
  position: fixed;
  bottom: 1rem;
  left: 1rem;
  width: 16px;
  height: 16px;
  opacity: 0;
  pointer-events: none;
  cursor: pointer;
  z-index: 9999;
  transition: opacity 0.4s ease;
}

.ls-debug-toggle--visible {
  opacity: 1;
  pointer-events: auto;
}

.ls-debug-toggle input {
  width: 16px;
  height: 16px;
  margin: 0;
  cursor: pointer;
}

/* ── Responsive ──────────────────────────────────────────────── */

@media (max-width: 600px) {
  body {
    font-size: 1rem;
  }

  .ls-article {
    padding: 2.5rem 1rem 2rem;
  }

  .ls-header h1 {
    font-size: 1.6rem;
  }

  .ls-dpad {
    display: grid;
  }
}

/* ── References (explainer layout) ──────────────────────────── */

.ls-references {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
}

.ls-references-rule {
  border: none;
  border-top: 1px solid var(--ls-border);
  margin-bottom: 1.25rem;
}

.ls-references-heading {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--ls-text-muted);
  margin-bottom: 0.75rem;
}

.ls-references-list {
  list-style: disc;
  padding-left: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.ls-references-list li {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 0.8rem;
  color: var(--ls-text-muted);
  line-height: 1.5;
}

.ls-references-list a {
  color: var(--ls-text-muted);
  text-underline-offset: 2px;
}

.ls-references-list a:hover {
  color: var(--ls-text);
}

/* ── Site header (explainer layout) ─────────────────────────── */

.ls-site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 44px;
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
  background: var(--ls-bg);
  border-bottom: 1px solid var(--ls-border);
}

.ls-site-header__logo {
  height: 22px;
  width: auto;
  display: block;
  opacity: 0.75;
  transition: opacity 0.15s;
}

.ls-site-header a:hover .ls-site-header__logo {
  opacity: 1;
}

/* Bump article top padding to clear the fixed 44px header */
.ls-article {
  padding-top: 5rem;
}

@media (max-width: 600px) {
  .ls-article {
    padding-top: 4rem; /* 2.5rem default is below 44px header height */
  }
}

/* ── Footer CTA link ─────────────────────────────────────────── */

.ls-cta__link {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ls-accent-dark);
  text-decoration: none;
  border-bottom: 1px solid var(--ls-accent);
  padding-bottom: 1px;
  transition: color 0.15s, border-color 0.15s;
}

.ls-cta__link:hover {
  color: var(--ls-text);
  border-color: var(--ls-text);
}