:root {
  color-scheme: dark;
  --color-bg: #080b12;
  --color-panel: #111827;
  --color-panel-raised: #172033;
  --color-text: #f9fafb;
  --color-muted: #9ca3af;
  --color-line: #344054;
  --color-tile: #202b3d;
  --color-exact: #2f9e6f;
  --color-misplaced: #c99a27;
  --color-absent: #4b5563;
  --color-accent: #a7f3d0;
  --radius: 18px;
  --tile-size: clamp(36px, 10vw, 52px);
}

:root[data-contrast="high"] {
  --color-exact: #2f80ed;
  --color-misplaced: #f2994a;
}

* { box-sizing: border-box; }
html { min-height: 100%; background: var(--color-bg); }
body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 50% -10%, rgba(64, 93, 146, .24), transparent 38rem),
    var(--color-bg);
  color: var(--color-text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}
button, input { font: inherit; }
button { touch-action: manipulation; }
button:focus-visible, input:focus-visible, [tabindex]:focus-visible { outline: 3px solid #93c5fd; outline-offset: 3px; }

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

.app-shell { width: min(100% - 24px, 720px); margin: 0 auto; padding: max(18px, env(safe-area-inset-top)) 0 max(28px, env(safe-area-inset-bottom)); }
.topbar { display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid rgba(255,255,255,.08); padding: 0 2px 14px; }
.eyebrow { margin: 0 0 3px; color: var(--color-accent); font-size: .68rem; letter-spacing: .16em; font-weight: 800; }
h1 { margin: 0; font-size: clamp(1.8rem, 8vw, 2.6rem); letter-spacing: -.05em; line-height: .95; }
h1 span { color: var(--color-accent); }
.icon-button { width: 44px; height: 44px; border: 1px solid var(--color-line); border-radius: 50%; background: var(--color-panel); color: var(--color-text); font-size: 1.2rem; cursor: pointer; }

.hero { text-align: center; padding: 22px 0 14px; }
.hero-copy h2 { margin: 0; font-size: clamp(1.25rem, 5vw, 1.55rem); letter-spacing: -.025em; }
.hero-copy p { max-width: 520px; margin: 7px auto 18px; color: var(--color-muted); line-height: 1.45; font-size: .9rem; }
.cross-board { display: grid; grid-template-columns: repeat(5, var(--tile-size)); grid-template-rows: repeat(5, var(--tile-size)); justify-content: center; gap: 5px; margin: 0 auto; }
.cross-cell { display: grid; place-items: center; border: 1px solid #536078; border-radius: 9px; background: linear-gradient(145deg, #222f45, #172033); font-size: clamp(1.05rem, 4vw, 1.45rem); font-weight: 800; box-shadow: inset 0 1px rgba(255,255,255,.05); }
.cross-cell--shared { border-color: var(--color-accent); box-shadow: 0 0 0 1px var(--color-accent), 0 0 24px rgba(167, 243, 208, .12); }
.cross-spacer { pointer-events: none; }
.game-status { min-height: 1.4em; margin: 16px 0 0; color: #d1d5db; font-size: .88rem; }

.play-panel { background: rgba(17, 24, 39, .88); border: 1px solid rgba(255,255,255,.08); border-radius: var(--radius); padding: 16px; box-shadow: 0 24px 80px rgba(0,0,0,.25); backdrop-filter: blur(18px); }
.input-area { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 14px; }
.input-row { display: flex; gap: 5px; min-width: 0; }
.input-tile { width: clamp(34px, 9vw, 44px); aspect-ratio: 1; display: grid; place-items: center; background: var(--color-tile); border: 1px solid #4b586f; border-radius: 8px; font-size: 1.15rem; font-weight: 800; }
.input-row--disabled { opacity: .55; }
.kitty-button { min-height: 42px; border: 1px solid #56647d; border-radius: 10px; padding: 0 12px; background: #22304a; color: var(--color-text); font-size: .8rem; font-weight: 750; cursor: pointer; white-space: nowrap; }
.kitty-button:disabled { opacity: .48; cursor: not-allowed; }

.feedback-heading { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; padding: 0 4px 5px; color: var(--color-muted); font-size: .65rem; letter-spacing: .08em; text-transform: uppercase; font-weight: 800; text-align: center; }
.attempts { display: grid; gap: 5px; }
.attempt-row { min-height: 31px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 8px; }
.feedback-strip { display: flex; justify-content: center; gap: 3px; }
.feedback-tile { --tile-result-color: var(--color-absent); width: clamp(24px, 6.6vw, 32px); aspect-ratio: 1; display: grid; place-items: center; border-radius: 5px; background: var(--color-tile); border: 1px solid rgba(255,255,255,.13); font-size: .72rem; font-weight: 850; animation: flip 420ms ease both; animation-fill-mode: forwards; backface-visibility: hidden; }
.feedback-tile--settled { animation: none; background: var(--tile-result-color); }
.axis-divider { color: #6b7280; font-weight: 800; }
.attempt-row--empty { color: #4b5563; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-weight: 900; letter-spacing: .12em; text-align: center; }
.empty-feedback { min-height: 30px; display: grid; place-items: center; border: 1px dashed rgba(255,255,255,.08); border-radius: 5px; }

.keyboard { display: flex; flex-direction: column; gap: 6px; margin-top: 17px; user-select: none; }
.keyboard-row { display: flex; justify-content: center; gap: 4px; }
.keyboard-row--middle { padding-inline: 4.5%; }
.keyboard button { flex: 1 1 0; max-width: 48px; min-width: 0; height: 48px; border: 0; border-radius: 7px; background: #596579; color: #fff; font-size: clamp(.69rem, 3vw, .88rem); font-weight: 800; cursor: pointer; transition: transform 80ms ease, background-color 160ms ease; }
.keyboard button:active { transform: translateY(1px) scale(.97); }
.keyboard .key-action { max-width: 70px; flex-grow: 1.45; font-size: .67rem; }
.keyboard .key--exact { background: var(--color-exact); }
.keyboard .key--misplaced { background: var(--color-misplaced); color: #111827; }
.keyboard .key--absent { background: #2f3745; color: #aeb6c3; }

.modal { width: min(92vw, 480px); border: 0; padding: 0; border-radius: 18px; color: var(--color-text); background: transparent; }
.modal::backdrop { background: rgba(0,0,0,.68); backdrop-filter: blur(4px); }
.modal-card { background: #121a28; border: 1px solid #354159; border-radius: 18px; padding: 20px; box-shadow: 0 24px 80px rgba(0,0,0,.5); }
.modal-header { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.modal-header h2 { margin: 0; font-size: 1.25rem; }
.setting-row { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-top: 22px; cursor: pointer; }
.setting-row span { display: grid; gap: 4px; }
.setting-row small { color: var(--color-muted); line-height: 1.35; }
.setting-row input { width: 46px; height: 24px; accent-color: var(--color-exact); }
.share-status { color: #d1d5db; }
.share-output { padding: 15px; overflow: auto; border-radius: 12px; background: #080b12; border: 1px solid #303b50; font: 700 .94rem/1.45 ui-monospace, SFMono-Regular, Menlo, monospace; white-space: pre-wrap; }
.primary-button { width: 100%; min-height: 48px; border: 0; border-radius: 11px; background: var(--color-accent); color: #0b1320; font-weight: 850; cursor: pointer; }

.shake { animation: shake 280ms ease-in-out; }
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(5px); }
  50% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

@keyframes flip {
  0% { transform: scaleY(1); background-color: var(--color-tile); }
  49% { transform: scaleY(0); background-color: var(--color-tile); }
  50% { transform: scaleY(0); background-color: var(--tile-result-color); }
  100% { transform: scaleY(1); background-color: var(--tile-result-color); }
}

@media (max-width: 430px) {
  .app-shell { width: min(100% - 14px, 720px); }
  .play-panel { padding: 12px 8px 14px; }
  .input-area { align-items: flex-start; }
  .kitty-button { padding-inline: 8px; }
  .keyboard-row { gap: 3px; }
  .keyboard button { height: 46px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}

/* Lifetime stats ---------------------------------------------------------- */
.topbar-actions { display: flex; align-items: center; gap: 8px; }
.modal--stats { width: min(94vw, 560px); }
.stats-card { display: grid; gap: 18px; }
.stats-empty { margin: 0; padding: 12px 14px; border: 1px solid var(--color-line); border-radius: 12px; color: var(--color-muted); background: rgba(255,255,255,.025); line-height: 1.45; }
.stats-empty[hidden] { display: none; }
.stats-summary { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.stat-card { min-width: 0; padding: 13px 8px 11px; border: 1px solid #354159; border-radius: 12px; background: #0e1522; text-align: center; }
.stat-card strong { display: block; color: var(--color-text); font-size: clamp(1.28rem, 6vw, 1.8rem); line-height: 1; font-variant-numeric: tabular-nums; }
.stat-card span { display: block; margin-top: 7px; color: var(--color-muted); font-size: .68rem; line-height: 1.15; }
.distribution-section { display: grid; gap: 11px; }
.section-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.section-heading h3 { margin: 0; font-size: .96rem; }
.section-heading span { color: var(--color-muted); font-size: .7rem; }
.guess-distribution { display: grid; gap: 7px; }
.distribution-row { display: grid; grid-template-columns: 20px 1fr 28px; align-items: center; gap: 8px; min-height: 24px; font-size: .75rem; font-variant-numeric: tabular-nums; }
.distribution-attempt { color: var(--color-muted); font-weight: 800; text-align: right; }
.distribution-track { position: relative; height: 24px; overflow: hidden; border-radius: 6px; background: #202a39; }
.distribution-fill { width: var(--bar-size, 0%); min-width: 0; height: 100%; border-radius: inherit; background: var(--color-exact); transition: width 220ms ease; }
.distribution-row--latest .distribution-track { box-shadow: 0 0 0 1px var(--color-accent); }
.distribution-row--latest .distribution-fill { background: linear-gradient(90deg, var(--color-exact), var(--color-accent)); }
.distribution-count { color: var(--color-text); font-weight: 850; text-align: right; }
.distribution-row--latest .distribution-attempt::after { content: '•'; margin-left: 2px; color: var(--color-accent); }

@media (max-width: 430px) {
  .stats-summary { grid-template-columns: repeat(2, 1fr); }
}

/* WordAxis mastery -------------------------------------------------------- */
.mastery-section { display: grid; gap: 11px; padding-top: 4px; border-top: 1px solid rgba(255,255,255,.08); }
.mastery-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.mastery-card { min-width: 0; padding: 11px 10px; border: 1px solid #354159; border-radius: 11px; background: #0e1522; }
.mastery-card strong { display: block; font-size: 1.05rem; font-variant-numeric: tabular-nums; }
.mastery-card span { display: block; margin-top: 4px; color: var(--color-muted); font-size: .67rem; line-height: 1.2; }
.mastery-detail { margin: 0; color: var(--color-muted); font-size: .72rem; line-height: 1.4; }

/* Axis Lock --------------------------------------------------------------- */
.board-stage { position: relative; width: max-content; max-width: 100%; margin-inline: auto; }
.axis-lock-callout { position: absolute; left: 50%; top: 50%; z-index: 3; transform: translate(-50%, -50%) scale(.9); pointer-events: none; opacity: 0; padding: 7px 12px; border: 1px solid var(--color-accent); border-radius: 999px; background: rgba(8,11,18,.92); color: var(--color-accent); font-size: .72rem; font-weight: 900; letter-spacing: .12em; white-space: nowrap; }
.cross-board.axis-lock-celebration .cross-cell--shared { animation: axis-lock 700ms ease-out both; }
.axis-lock-callout.axis-lock-callout--visible { animation: axis-lock-label 900ms ease-out both; }
@keyframes axis-lock {
  0% { transform: scale(1); box-shadow: 0 0 0 1px var(--color-accent), 0 0 0 rgba(167,243,208,0); }
  40% { transform: scale(1.16); box-shadow: 0 0 0 3px var(--color-accent), 0 0 34px rgba(167,243,208,.5); }
  100% { transform: scale(1); box-shadow: 0 0 0 1px var(--color-accent), 0 0 24px rgba(167,243,208,.12); }
}
@keyframes axis-lock-label {
  0% { opacity: 0; transform: translate(-50%, -35%) scale(.9); }
  20%, 70% { opacity: 1; transform: translate(-50%, -50%) scale(1); }
  100% { opacity: 0; transform: translate(-50%, -65%) scale(1); }
}

/* Axis Rating ------------------------------------------------------------- */
.rating-panel { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 3px 12px; padding: 12px 14px; border: 1px solid #354159; border-radius: 12px; background: linear-gradient(135deg, rgba(167,243,208,.08), #0e1522 55%); }
.rating-panel .rating-label { grid-column: 1 / -1; color: var(--color-muted); font-size: .68rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; }
.rating-panel strong { grid-row: 2 / span 1; font-size: 1.75rem; line-height: 1; color: var(--color-accent); }
.rating-panel [data-rating="latest-detail"] { color: #d1d5db; font-size: .73rem; line-height: 1.35; }
.result-rating { margin: 0 0 12px; padding: 10px 12px; border: 1px solid var(--color-line); border-radius: 10px; color: var(--color-accent); background: #0e1522; font-weight: 850; text-align: center; }

/* Footer ------------------------------------------------------------------ */
.app-footer { margin: 18px 0 6px; text-align: center; color: var(--color-muted); font-size: .72rem; }
.app-footer a { color: var(--color-muted); }