/* Codebreaker Phrases — game layer on top of the shared Washi system. */

html[data-font="small"]  { font-size: 14px; }
html[data-font="normal"] { font-size: 16px; }
html[data-font="large"]  { font-size: 18px; }
html[data-font="xlarge"] { font-size: 21px; }
html[data-motion="reduced"] *, html[data-motion="reduced"] *::before,
html[data-motion="reduced"] *::after { animation: none !important; transition-duration: 0.01ms !important; }
html[data-contrast="high"] {
  --line: color-mix(in srgb, var(--ink) 65%, var(--paper));
  --border: var(--line);
  --border-strong: var(--ink);
}

body { min-height: 100dvh; padding-bottom: env(safe-area-inset-bottom); }
body.modal-open { overflow: hidden; }
.sr-only {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed; z-index: 200; left: var(--sp-3); top: var(--sp-3);
  padding: var(--sp-2) var(--sp-3); background: var(--ink); color: var(--paper);
  transform: translateY(-150%); transition: transform var(--t);
}
.skip-link:focus { transform: none; }
.danger-text { color: var(--accent) !important; }
kbd {
  display: inline-block; min-width: 1.8em; padding: 0.05em 0.35em;
  border: 1px solid var(--line); border-bottom-width: 2px; border-radius: var(--r-sm);
  background: var(--paper-2); font: inherit; font-size: 0.85em; text-align: center;
}

/* Header and control strip mirror the site's other games. */
.game-header {
  position: relative; z-index: 50;
  display: flex; align-items: center; gap: var(--sp-5);
  min-height: 4.75rem; padding: var(--sp-3) max(var(--sp-5), env(safe-area-inset-right));
  padding-left: max(var(--sp-5), env(safe-area-inset-left));
  padding-top: calc(var(--sp-3) + env(safe-area-inset-top));
  border-bottom: var(--bw-strong) solid var(--ink);
  background: color-mix(in srgb, var(--paper) 91%, transparent);
  backdrop-filter: blur(8px);
}
.brand { display: flex; align-items: center; gap: var(--sp-3); min-width: 0; }
.brand .mark { font-family: var(--font-display); font-size: 2.15rem; line-height: 1; color: var(--accent); }
.brand .mark-en {
  font-size: 0.58rem; line-height: 1.35; letter-spacing: var(--tracking-wider);
  text-transform: uppercase; color: var(--muted);
}
.brand .mark-en b { color: var(--ink); font-weight: 500; }
.hud { display: flex; align-items: center; gap: clamp(var(--sp-3), 3vw, var(--sp-6)); margin-left: auto; }
.stat { display: flex; flex-direction: column; align-items: center; min-width: 3.5rem; }
.stat-num { font-size: var(--fs-lg); line-height: 1.05; font-variant-numeric: tabular-nums; }
.stat-label, .ctl-label {
  font-size: 0.56rem; letter-spacing: var(--tracking-wide); text-transform: uppercase; color: var(--muted);
}

.controls {
  position: sticky; top: 0; z-index: 45;
  display: flex; align-items: center; gap: var(--sp-2);
  padding: var(--sp-2) max(var(--sp-5), env(safe-area-inset-right));
  padding-left: max(var(--sp-5), env(safe-area-inset-left));
  border-bottom: 1px solid var(--line); background: var(--paper-2);
}
.controls .spacer { flex: 1; }
.difficulty-picker { flex: 0 1 auto; overflow-x: auto; scrollbar-width: none; }
.difficulty-picker::-webkit-scrollbar { display: none; }
.difficulty-picker .btn { font-size: 0.57rem; white-space: nowrap; }
.more-menu {
  position: absolute; z-index: 55; right: var(--sp-5); top: calc(100% + var(--sp-1));
  display: grid; min-width: 12rem; padding: var(--sp-2);
  border: var(--bw) solid var(--ink); background: var(--card); box-shadow: var(--shadow-lg);
}
.more-menu[hidden] { display: none; }
.more-menu .btn { justify-content: flex-start; text-align: left; }

/* Main two-column game layout. */
.game-shell {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(16rem, 20rem);
  gap: clamp(var(--sp-4), 3vw, var(--sp-6)); width: min(90rem, 100%);
  margin: 0 auto; padding: clamp(var(--sp-4), 3vw, var(--sp-6));
  align-items: start;
}
.puzzle-column { min-width: 0; display: grid; gap: var(--sp-6); }
.phrase-card {
  position: relative; overflow: hidden; min-height: 15rem;
  display: flex; flex-direction: column; justify-content: center;
  padding: clamp(var(--sp-4), 4vw, var(--sp-7));
  background:
    radial-gradient(circle at 85% 15%, var(--murasaki-soft), transparent 35%),
    var(--card);
}
.phrase-card::after {
  content: '暗'; position: absolute; right: -0.02em; bottom: -0.3em;
  font-family: var(--font-display); font-size: min(17rem, 28vw); line-height: 1;
  color: var(--ink); opacity: 0.025; pointer-events: none;
}
.phrase-meta, .section-heading {
  position: relative; z-index: 1; display: flex; align-items: center;
  justify-content: space-between; gap: var(--sp-3);
}
.eyebrow, .clue-topic {
  display: block; font-size: 0.61rem; letter-spacing: var(--tracking-wider);
  text-transform: uppercase; color: var(--muted);
}
.phrase {
  position: relative; z-index: 1;
  display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: center;
  gap: 0.45em 0.8em; margin: clamp(var(--sp-5), 4vw, var(--sp-7)) 0 var(--sp-4);
  font-size: clamp(1.2rem, 3.2vw, 2.15rem); line-height: 1;
}
.cipher-word { display: inline-flex; align-items: flex-end; gap: 0.12em; white-space: nowrap; }
.cipher-glyph {
  position: relative; display: inline-flex; flex-direction: column; align-items: center;
  min-width: 1.05em; padding: 0.12em 0.05em 0.2em; border-radius: var(--r-sm);
  border: 0; background: transparent; color: inherit; font: inherit;
  transition: background var(--t), transform var(--t-slow);
}
button.cipher-glyph { min-width: 1.35em; min-height: 2.6em; cursor: pointer; }
button.cipher-glyph:hover { background: var(--murasaki-soft); transform: translateY(-0.12em); }
.cipher-letter {
  min-height: 1em; font-family: var(--font-display); font-weight: 700;
  color: var(--ink); animation: letter-in 0.35s ease-out;
}
.cipher-number {
  margin-top: 0.45em; padding-top: 0.28em; width: 100%; border-top: 1px solid var(--line);
  color: var(--accent); font-size: 0.48em; font-weight: 500; text-align: center;
  font-variant-numeric: tabular-nums;
}
.cipher-glyph.is-highlighted { background: var(--gold-soft); transform: translateY(-0.15em); }
.cipher-glyph.is-tentative .cipher-letter { color: var(--murasaki); }
.cipher-glyph.is-tentative .cipher-number { border-top-style: dashed; }
.cipher-glyph.is-active {
  background: var(--murasaki-soft);
  box-shadow: 0 0 0 2px var(--murasaki);
  transform: translateY(-0.15em);
}
.cipher-glyph.is-double::after {
  content: ''; position: absolute; top: -0.2em; width: 0.22em; height: 0.22em;
  border-radius: 50%; background: var(--murasaki);
}
.phrase .punctuation { align-self: flex-start; padding-top: 0.12em; font-family: var(--font-display); }
.phrase .separator { align-self: center; color: var(--muted); }
.phrase .space { width: 0; }
.phrase-caption { position: relative; z-index: 1; text-align: center; color: var(--muted); font-size: var(--fs-xs); }
.pencil-entry {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: auto 3.4rem auto auto;
  align-items: center; justify-content: center; gap: var(--sp-2);
  width: min(100%, 36rem); margin: 0 auto var(--sp-3);
  padding: var(--sp-3); border: 1px solid var(--murasaki);
  background: var(--murasaki-soft);
}
.pencil-entry[hidden] { display: none; }
.pencil-entry label { font-size: var(--fs-sm); }
.pencil-entry label b { color: var(--accent); font-variant-numeric: tabular-nums; }
.pencil-entry .input { padding-inline: 0.35em; text-align: center; text-transform: uppercase; }
.pencil-entry small { grid-column: 1 / -1; color: var(--muted); font-size: 0.62rem; text-align: center; }
@keyframes letter-in { from { opacity: 0.25; transform: translateY(0.2em); } }

.clue-section { display: grid; gap: var(--sp-4); }
.section-heading h1, .section-heading h2 { font-size: var(--fs-xl); }
.clue-count { font-size: var(--fs-xs); color: var(--muted); white-space: nowrap; }
.clue-list { display: grid; gap: var(--sp-3); }
.clue-card {
  position: relative; display: grid; grid-template-columns: auto 1fr; gap: var(--sp-4);
  padding: var(--sp-4); border-left: 3px solid var(--murasaki);
  transition: opacity var(--t-slow), transform var(--t);
}
.clue-card:focus-within { transform: translateX(0.15rem); }
.clue-card.is-used { opacity: 0.58; border-left-color: var(--jade); background: var(--paper-2); }
.clue-number {
  color: var(--murasaki); font-size: var(--fs-sm); font-variant-numeric: tabular-nums;
}
.clue-body { min-width: 0; }
.clue-prompt { margin: 0.18rem 0 var(--sp-3); font-family: var(--font-display); font-size: var(--fs-md); line-height: 1.45; }
.clue-form { display: flex; gap: var(--sp-2); }
.clue-form .input { min-width: 0; flex: 1; }
.clue-response { margin: var(--sp-2) 0 0; color: var(--jade); font-size: var(--fs-sm); }

/* Alphabet remains visible while the clue list scrolls. */
.alphabet-card {
  position: sticky; top: 5.2rem; padding: var(--sp-4);
  background: color-mix(in srgb, var(--card) 94%, var(--jade));
}
.alphabet-help { margin: var(--sp-2) 0 var(--sp-4); color: var(--muted); font-size: var(--fs-xs); line-height: 1.55; }
.alphabet-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--sp-2); }
.alphabet-key {
  position: relative; min-width: 0; min-height: 3.15rem;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  border: 1px solid var(--line); border-radius: var(--r-sm);
  color: var(--ink); background: var(--card); font: inherit; cursor: pointer;
  transition: transform var(--t), background var(--t);
}
.alphabet-key b { font-family: var(--font-display); font-size: var(--fs-md); }
.alphabet-key span { font-size: 0.66rem; color: var(--accent); font-variant-numeric: tabular-nums; }
.alphabet-key:disabled { cursor: default; opacity: 0.45; }
.alphabet-key:not(:disabled):hover { transform: translateY(-2px); border-color: var(--jade); }
.alphabet-key[aria-pressed="true"] { color: var(--paper); background: var(--jade); border-color: var(--jade); }
.alphabet-key[aria-pressed="true"] span { color: var(--paper); }
.alphabet-key.is-eliminated::after { content: '×'; position: absolute; right: 0.25em; top: 0; color: var(--accent); }

/* Thumb-reachable solve panel. */
.solve-dock {
  position: sticky; z-index: 42; bottom: 0;
  display: grid; grid-template-columns: auto minmax(8rem, 1fr) auto auto;
  align-items: center; gap: var(--sp-2); width: 100%;
  padding: var(--sp-3) max(var(--sp-5), env(safe-area-inset-right));
  padding-left: max(var(--sp-5), env(safe-area-inset-left));
  padding-bottom: calc(var(--sp-3) + env(safe-area-inset-bottom));
  border-top: var(--bw-strong) solid var(--ink); background: var(--paper-2); box-shadow: 0 -4px 16px rgba(26, 23, 20, 0.08);
}
.solve-dock[hidden] { display: none; }

#status {
  position: fixed; z-index: 100; left: 50%; bottom: calc(1.2rem + env(safe-area-inset-bottom));
  max-width: min(90vw, 42rem); padding: var(--sp-2) var(--sp-4);
  border: var(--bw) solid var(--ink); border-radius: var(--r-pill);
  background: var(--card); box-shadow: var(--shadow-lg);
  font-size: var(--fs-sm); text-align: center;
  opacity: 0; pointer-events: none; transform: translate(-50%, 1rem);
  transition: opacity var(--t-slow), transform var(--t-slow);
}
#status.show { opacity: 1; transform: translate(-50%, 0); }
#status.good { border-color: var(--jade); }
#status.bad { border-color: var(--accent); }

/* Shared overlays, summaries and settings. */
.overlay[hidden] { display: none; }
.overlay {
  position: fixed; inset: 0; z-index: 120; align-items: center; justify-content: center;
  padding: var(--sp-4); background: color-mix(in srgb, var(--ink) 58%, transparent);
  backdrop-filter: blur(4px);
}
.overlay.show { display: flex; }
.modal { position: relative; width: min(32rem, 100%); max-height: 90dvh; overflow-y: auto; }
.modal-wide { width: min(52rem, 100%); }
.modal-close { position: absolute; z-index: 2; top: var(--sp-2); right: var(--sp-2); font-size: 1.35rem; }
.modal-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: var(--sp-2); margin-top: var(--sp-5); }
.rules { margin: var(--sp-4) 0 var(--sp-5) var(--sp-5); }
.rules li + li { margin-top: var(--sp-2); }
.round-summary { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; margin-top: var(--sp-5); background: var(--line); border: 1px solid var(--line); }
.round-summary div { display: flex; justify-content: space-between; gap: var(--sp-3); padding: var(--sp-2) var(--sp-3); background: var(--card); }
.round-summary span { color: var(--muted); font-size: var(--fs-xs); }
.round-summary b { text-align: right; font-size: var(--fs-sm); }

.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-2); margin-top: var(--sp-5); }
.stat-card { display: flex; min-height: 5rem; flex-direction: column; align-items: center; justify-content: center; padding: var(--sp-3); background: var(--paper-2); text-align: center; }
.stat-card strong { color: var(--accent); font-family: var(--font-display); font-size: var(--fs-lg); }
.stat-card span { color: var(--muted); font-size: 0.62rem; text-transform: uppercase; letter-spacing: var(--tracking-wide); }

.achievement-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-2); margin-top: var(--sp-5); }
.achievement { display: grid; grid-template-columns: 3rem 1fr; gap: var(--sp-3); align-items: center; min-height: 5rem; padding: var(--sp-3); border: 1px solid var(--line); }
.achievement-icon { display: grid; place-items: center; width: 3rem; height: 3rem; border: 1px solid currentColor; border-radius: 50%; font-family: var(--font-display); font-size: var(--fs-lg); }
.achievement p { margin: 0.18rem 0 0; color: var(--muted); font-size: 0.67rem; line-height: 1.4; }
.achievement.is-locked { opacity: 0.42; filter: grayscale(1); }
.tier-bronze { color: #9a6846; } .tier-silver { color: #7c858c; }
.tier-gold { color: var(--gold); } .tier-jade { color: var(--jade); }

.achievement-toast {
  position: fixed; z-index: 145; right: var(--sp-4); top: calc(1rem + env(safe-area-inset-top));
  display: flex; align-items: center; gap: var(--sp-3); min-width: 16rem;
  padding: var(--sp-3); border: 2px solid var(--gold); background: var(--card); box-shadow: var(--shadow-lg);
  opacity: 0; pointer-events: none; transform: translateX(calc(100% + 2rem)); transition: all 0.45s ease;
}
.achievement-toast.show { opacity: 1; transform: none; }
.achievement-toast > span:first-child { font-family: var(--font-display); font-size: var(--fs-xl); color: var(--gold); }
.achievement-toast small { display: block; color: var(--muted); text-transform: uppercase; font-size: 0.56rem; letter-spacing: var(--tracking-wide); }

.hint-list { display: grid; gap: var(--sp-2); margin-top: var(--sp-4); }
.hint-option {
  display: flex; align-items: center; justify-content: space-between; gap: var(--sp-4);
  width: 100%; padding: var(--sp-3); border: 1px solid var(--line);
  background: var(--card); color: var(--ink); font: inherit; text-align: left; cursor: pointer;
}
.hint-option:hover { border-color: var(--jade); background: var(--jade-soft); }
.hint-option span { display: grid; }
.hint-option small { color: var(--muted); }
.hint-option em { color: var(--accent); font-size: var(--fs-sm); font-style: normal; white-space: nowrap; }

.settings-grid { display: grid; margin: var(--sp-4) 0 var(--sp-5); border-top: 1px solid var(--line); }
.setting-row { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-5); min-height: 4rem; padding: var(--sp-2) 0; border-bottom: 1px solid var(--line); }
.setting-row span { display: grid; }
.setting-row small, .settings-note { color: var(--muted); font-size: var(--fs-xs); }
.setting-row input[type="checkbox"], .pack-option input { width: 1.35rem; height: 1.35rem; accent-color: var(--jade); }
.pack-settings { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-4); margin-top: var(--sp-3); }
.pack-settings fieldset { border: 1px solid var(--line); padding: var(--sp-2); }
.pack-settings legend { padding: 0 var(--sp-2); color: var(--muted); font-size: var(--fs-xs); text-transform: uppercase; }
.pack-option { display: flex; align-items: flex-start; gap: var(--sp-3); padding: var(--sp-2); cursor: pointer; }
.pack-option span { display: grid; line-height: 1.35; }
.pack-option small { color: var(--muted); font-size: 0.63rem; }

.loading-screen {
  position: fixed; inset: 0; z-index: 180; display: grid; place-content: center; justify-items: center; gap: var(--sp-4);
  background: var(--paper); transition: opacity 0.35s ease, visibility 0.35s;
}
.loading-screen.is-done { opacity: 0; visibility: hidden; }
.loading-seal {
  display: grid; place-items: center; width: 5rem; height: 5rem; border: 3px solid var(--accent);
  color: var(--accent); font-family: var(--font-display); font-size: var(--fs-2xl); transform: rotate(-3deg);
  animation: seal-pulse 1.2s ease-in-out infinite alternate;
}
@keyframes seal-pulse { to { transform: rotate(3deg) scale(1.04); } }

.celebration { position: fixed; inset: 0; z-index: 135; overflow: hidden; pointer-events: none; }
.celebration i {
  position: absolute; left: var(--x); top: -1rem; width: 0.5rem; height: 0.9rem;
  background: var(--colour); animation: confetti-fall 2.3s cubic-bezier(.2,.7,.4,1) var(--delay) forwards;
}
@keyframes confetti-fall { to { transform: translateY(105vh) rotate(var(--spin)); opacity: 0.3; } }
.celebration-ripple i { width: 0.65rem; height: 0.65rem; border-radius: 50%; }
.celebration-cascade i { height: 1.5rem; animation-duration: 1.8s; }
.celebration-seal i { width: 0.8rem; height: 0.8rem; border: 2px solid var(--colour); background: transparent; transform: rotate(8deg); }
.noscript { margin: var(--sp-6); padding: var(--sp-4); border: 2px solid var(--accent); }

@media (max-width: 950px) {
  .game-shell { grid-template-columns: 1fr; }
  .alphabet-card { position: static; order: -1; }
  .alphabet-grid { grid-template-columns: repeat(13, 1fr); }
  .alphabet-key { min-height: 2.8rem; }
}

@media (max-width: 720px) {
  .game-header { min-height: 4rem; padding-left: var(--sp-3); padding-right: var(--sp-3); }
  .brand .mark { font-size: 1.65rem; }
  .hud { gap: var(--sp-2); }
  .stat { min-width: 3rem; }
  .stat-num { font-size: var(--fs-md); }
  .controls { padding-left: var(--sp-3); padding-right: var(--sp-3); overflow-x: auto; }
  .controls .ctl-label { display: none; }
  .difficulty-picker .btn { padding-inline: 0.7em; }
  .game-shell { padding: var(--sp-3); gap: var(--sp-4); }
  .phrase-card { min-height: 12rem; }
  .alphabet-grid { grid-template-columns: repeat(7, 1fr); }
  .clue-form { align-items: stretch; }
  .clue-card { padding: var(--sp-3); gap: var(--sp-2); }
  .solve-dock { grid-template-columns: 1fr auto; padding-left: var(--sp-3); padding-right: var(--sp-3); }
  .solve-dock label { grid-column: 1 / -1; }
  .solve-dock #btn-cancel-solve { position: absolute; right: var(--sp-3); top: var(--sp-2); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .achievement-grid, .pack-settings { grid-template-columns: 1fr; }
  .round-summary { grid-template-columns: 1fr; }
}

@media (max-width: 430px) {
  [data-optional] { display: none; }
  .brand .mark-en { display: none; }
  .controls > .btn { padding-inline: 0.7em; }
  .alphabet-grid { grid-template-columns: repeat(6, 1fr); }
  .alphabet-key { min-height: 2.65rem; }
  .phrase { font-size: clamp(1.05rem, 5.5vw, 1.45rem); gap: 0.7em 0.45em; }
  .pencil-entry { grid-template-columns: 1fr 3.2rem auto; }
  .pencil-entry #btn-close-pencil { grid-column: 1 / -1; }
  .clue-form { display: grid; grid-template-columns: 1fr auto; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; }
}