/* token-counter v1 — phosphor / dark / mono.
   Mei's three changes: Wordle-strict streak; Close moment (kiss-merge +
   token-pulse + serif stamp); token-shaped emoji vocabulary.
   Mei's cut: the four-paragraph intro screen. Puzzle is the rule book. */

:root {
  --bg: #0a0d10;
  --bg-elev: #11161b;
  --ink: #d8dee5;
  --ink-bright: #f1f4f7;
  --muted: #6b7682;
  --muted-2: #4a525c;
  --accent: #7ee8a3;            /* phosphor green */
  --accent-dim: rgba(126, 232, 163, 0.12);
  --warn-amber: #ffd47e;        /* the warn-amber pulse color */
  --warn-amber-bg: rgba(255, 212, 126, 0.18);
  --warn: #ff7a7a;
  --line: #1c232b;
  --line-bright: #2a333d;

  /* token slot colors — six rotating hues, low-sat, phosphor-leaning */
  --tok-0: #7ee8a3;
  --tok-1: #7dc4ff;
  --tok-2: #ffd47e;
  --tok-3: #e09cff;
  --tok-4: #ff9d7e;
  --tok-5: #9ce8d9;

  --control-radius: var(--radius-sm, 4px);
  --control-radius-sm: var(--radius-xs, 2px);
  --game-focus: var(--border-focus, var(--accent));
  --mono: var(--font-mono, ui-monospace, 'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace);
  --serif: var(--font-serif, 'Georgia', 'Iowan Old Style', 'Charter', 'Times New Roman', serif);
}

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

html, body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
  width: 100%;
  max-width: 680px;
  margin: 0 auto;
  padding: 1.25rem 1.1rem 2rem;
}

footer {
  padding: 1.25rem 1.1rem 1.5rem;
  text-align: left;
  max-width: 680px;
  margin: 0 auto;
  width: 100%;
  font-size: 0.72rem;
  color: var(--muted);
}
footer .brand { color: var(--ink); }
footer code {
  color: var(--ink);
  background: var(--bg-elev);
  padding: 1px 4px;
  border-radius: var(--control-radius-sm);
  font-size: 0.95em;
}

.screen { display: none; }
.screen.active { display: block; animation: fadein 0.25s ease; }

@keyframes fadein {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- top bar: day + streak chip --- */

.intro-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0 0 1.1rem;
  font-size: 0.85rem;
}
.day-chip {
  color: var(--accent);
  font-family: var(--mono);
  letter-spacing: 0.04em;
}
.streak-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--bg-elev);
  border: 1px solid var(--line-bright);
  border-radius: 999px;
  padding: 0.18rem 0.65rem 0.2rem;
  color: var(--ink-bright);
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 600;
}
.streak-chip[hidden] { display: none; }
.streak-chip .flame { font-size: 0.95em; line-height: 1; }

/* --- cue (max 8 words; Mei's directive) --- */

.cue {
  font-family: var(--mono);
  color: var(--ink);
  font-size: 1.0rem;
  margin: 0 0 0.6rem;
}

/* per-phrase progress line: "phrase 3 of 5" */
.progress {
  font-family: var(--mono);
  color: var(--muted);
  font-size: 0.82rem;
  margin: 0 0 0.35rem;
  letter-spacing: 0.02em;
}

/* session glyph row on intro: live mirror of today's run, padded with · */
.session-row {
  font-family: var(--mono);
  font-size: 1.25rem;
  letter-spacing: 0.08em;
  color: var(--ink-bright);
  margin: 0 0 1.0rem;
  line-height: 1;
}

/* --- phrase block (the puzzle is the rule book) --- */

.phrase-block {
  background: var(--bg-elev);
  border: 1px solid var(--line-bright);
  border-radius: var(--control-radius);
  padding: 1rem 1.1rem 1.1rem;
  margin: 0 0 1.2rem;
}
.phrase-label {
  color: var(--muted);
  font-size: 0.78rem;
  margin-bottom: 0.55rem;
}
.phrase-display {
  font-family: var(--mono);
  font-size: 1.1rem;
  color: var(--ink-bright);
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
}

/* --- guess form --- */

.guess-form {
  display: flex;
  gap: 0.5rem;
  align-items: stretch;
  margin: 0 0 0.35rem;
  flex-wrap: wrap;
}
.guess-label {
  flex: 1 0 100%;
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 0.35rem;
}
.guess-form input[type=number] {
  flex: 1;
  min-width: 4rem;
  background: var(--bg-elev);
  color: var(--ink-bright);
  border: 1px solid var(--line-bright);
  border-radius: var(--control-radius);
  padding: 0.7rem 0.85rem;
  font-family: var(--mono);
  font-size: 1.1rem;
  text-align: center;
  -moz-appearance: textfield;
}
.guess-form input[type=number]::-webkit-outer-spin-button,
.guess-form input[type=number]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.guess-form input[type=number]:focus {
  outline: none;
  border-color: var(--accent);
}
.guess-form button { white-space: nowrap; }

button {
  display: inline-block;
  border: none;
  border-radius: var(--control-radius);
  padding: 0.65rem 1.25rem;
  font: inherit;
  font-family: var(--mono);
  font-weight: 500;
  cursor: pointer;
  transition: filter 0.12s, transform 0.05s, background 0.12s, border-color 0.12s, color 0.12s;
}
.primary {
  background: var(--accent);
  color: var(--bg);
  border: 1px solid var(--accent);
}
.primary:hover { filter: brightness(1.08); }
.primary:active { transform: translateY(1px); }
.primary:disabled { opacity: 0.4; cursor: not-allowed; }
button:focus-visible {
  outline: 2px solid var(--game-focus);
  outline-offset: 3px;
}

/* Pre-submit feedback band under the input (ambient; no spoilers). */
.guess-band {
  font-family: var(--mono);
  color: var(--muted);
  font-size: 0.78rem;
  min-height: 1.1em;
  margin: 0.35rem 0 0;
}
.guess-band.live { color: var(--ink); }

/* --- reveal: kiss-stage + Close stamp (the named good moment) --- */

.kiss-stage {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  height: 4.5rem;
  margin: 1.1rem 0 0.5rem;
  font-family: var(--mono);
  font-weight: 600;
  font-size: 2.2rem;
}
.kiss-num {
  display: inline-block;
  min-width: 2.2ch;
  text-align: center;
  transition: transform 0.32s cubic-bezier(.18,.85,.32,1.1),
              opacity 0.32s ease,
              color 0.32s ease;
  will-change: transform;
}
.kiss-guess  { color: var(--ink-bright); }
.kiss-actual { color: var(--accent); }
.kiss-sep {
  color: var(--muted-2);
  font-size: 1.6rem;
  font-weight: 400;
  transition: opacity 0.18s ease;
}

/* Close: ±1. The two numbers slide together and overlap briefly. */
.kiss-stage.kiss .kiss-guess  { transform: translateX(1.2ch); }
.kiss-stage.kiss .kiss-actual { transform: translateX(-1.2ch); }
.kiss-stage.kiss .kiss-sep    { opacity: 0; }

/* Exact: numbers collapse into one. */
.kiss-stage.exact .kiss-guess  { transform: translateX(1.4ch); opacity: 0.0; }
.kiss-stage.exact .kiss-actual { transform: translateX(-1.0ch); color: var(--accent); }
.kiss-stage.exact .kiss-sep    { opacity: 0; }

/* Hit-stop: 2-4 frames at 60fps (~50ms freeze framed by a 200ms decay).
   Same family as Pollen v0.4 — brightness/contrast micro-punch. */
body.hit-stop {
  animation: tc-hitstop 0.2s ease;
}
@keyframes tc-hitstop {
  0%   { filter: none; }
  18%  { filter: brightness(1.06) contrast(1.04); }
  34%  { filter: brightness(1.02); }
  100% { filter: none; }
}

/* The serif stamp — "Close." or "Exact." */
.close-stamp {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-style: italic;
  font-size: 2.4rem;
  font-weight: 500;
  color: var(--warn-amber);
  pointer-events: none;
  letter-spacing: -0.01em;
  text-shadow: 0 1px 0 rgba(0,0,0,0.15);
  animation: tc-stamp 1.6s cubic-bezier(.18,.85,.32,1.1) forwards;
}
.close-stamp.exact-stamp { color: var(--accent); }
.close-stamp[hidden] { display: none; }
@keyframes tc-stamp {
  0%   { opacity: 0; transform: scale(0.6) translateY(-10px); }
  18%  { opacity: 1; transform: scale(1.12) translateY(0); }
  32%  { opacity: 1; transform: scale(1.0) translateY(0); }
  78%  { opacity: 1; transform: scale(1.0); }
  100% { opacity: 0; transform: scale(1.0); }
}

/* --- reveal head + blocks --- */

.reveal-headline {
  font-size: 1.05rem;
  font-weight: 500;
  margin: 0.4rem 0 1.1rem;
  letter-spacing: -0.01em;
  color: var(--muted);
  text-align: center;
}
.reveal-headline.exact   { color: var(--accent); }
.reveal-headline.close-1 { color: var(--warn-amber); }
.reveal-headline.close-2 { color: var(--tok-4); }
.reveal-headline.miss    { color: var(--warn); }

.reveal-block {
  border-left: 2px solid var(--line-bright);
  padding: 0.4rem 0 0.4rem 0.9rem;
  margin: 0.85rem 0;
}
.reveal-label {
  color: var(--muted);
  font-size: 0.78rem;
  margin-bottom: 0.25rem;
}

/* --- tokens display (the teaching surface) --- */

.tokens-display {
  font-family: var(--mono);
  font-size: 1.05rem;
  line-height: 2.1;
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0.4rem 0 0.6rem;
  padding: 0.5rem 0;
  color: var(--ink);
}

.tok {
  display: inline-block;
  padding: 0.12rem 0.34rem;
  margin: 0.05rem 0.08rem 0.05rem 0;
  border-radius: var(--control-radius);
  border: 1px solid currentColor;
  background: rgba(255, 255, 255, 0.02);
  font-family: var(--mono);
  font-size: 0.95rem;
  line-height: 1.4;
  vertical-align: baseline;
  transition: background 0.12s ease, color 0.12s ease, border-color 0.12s ease;
}
.tok-c0 { color: var(--tok-0); }
.tok-c1 { color: var(--tok-1); }
.tok-c2 { color: var(--tok-2); }
.tok-c3 { color: var(--tok-3); }
.tok-c4 { color: var(--tok-4); }
.tok-c5 { color: var(--tok-5); }
.tok.ws {
  background: rgba(126, 232, 163, 0.06);
  border-style: dashed;
}
.tok.byte {
  background: rgba(255, 122, 122, 0.05);
  border-style: dotted;
  color: var(--warn);
}

/* Token-pulse: warn-amber flash on the "surprise" tokens that drove ±1.
   Triggered one at a time via JS, ~60ms stagger, 400ms total. */
.tok.pulse-amber {
  animation: tc-pulse-amber 380ms ease-out;
}
@keyframes tc-pulse-amber {
  0%   { background: rgba(255, 212, 126, 0.0); color: inherit; border-color: currentColor; }
  20%  { background: var(--warn-amber-bg); color: var(--warn-amber); border-color: var(--warn-amber); }
  55%  { background: var(--warn-amber-bg); color: var(--warn-amber); border-color: var(--warn-amber); }
  100% { background: rgba(255, 212, 126, 0.0); color: inherit; border-color: currentColor; }
}

.tokens-hint {
  color: var(--muted);
  font-size: 0.82rem;
  margin-top: 0.4rem;
  line-height: 1.5;
}
.tokens-hint .cat { color: var(--accent); font-weight: 500; }
.tokens-hint .teach { color: var(--ink); }

/* --- summary block on the reveal screen --- */

.summary-block {
  border-top: 1px solid var(--line);
  margin-top: 1.2rem;
  padding-top: 1.1rem;
}

.legend {
  font-size: 0.78rem;
  color: var(--muted);
  margin: 0.4rem 0 0.6rem;
}
.legend .leg {
  display: inline-block;
  margin-right: 0.05rem;
  font-family: var(--mono);
}
.legend .leg-1, .legend .leg-2, .legend .leg-x {
  color: var(--ink-bright);
  font-size: 1.05em;
  vertical-align: -1px;
}

.emoji-grid {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--control-radius);
  padding: 0.9rem 1.1rem;
  font-family: var(--mono);
  font-size: 1.0rem;
  line-height: 1.45;
  margin: 0.5rem 0 0.8rem;
  white-space: pre-wrap;
  color: var(--ink-bright);
}

.share-row {
  display: flex;
  gap: 0.6rem;
  margin: 0.5rem 0 0.4rem;
}

.next-day {
  color: var(--muted);
  font-size: 0.82rem;
  margin-top: 1rem;
}

.status {
  color: var(--muted);
  font-size: 0.82rem;
  min-height: 1.4em;
  margin: 0.4rem 0 0;
}
.status.ok { color: var(--accent); }
.status.bad { color: var(--warn); }

@media (max-width: 520px) {
  main { padding: 1rem 0.9rem 2rem; }
  .kiss-stage { font-size: 1.95rem; height: 4.2rem; }
  .close-stamp { font-size: 2.05rem; }
}