/* Palette: parchment, ink, signal */
:root {
  --paper: #f1e7cf;
  --paper-dark: #e6d9b8;
  --ink: #1a1612;
  --ink-soft: #4a4339;
  --correct: #5a7c4a;
  --present: #c8983c;
  --absent: #6b665e;
  --signal: #b94a3a;
}

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

html, body { height: 100%; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  -webkit-font-smoothing: antialiased;
  background-image:
    repeating-linear-gradient(0deg, rgba(26,22,18,0.025) 0 1px, transparent 1px 5px),
    radial-gradient(circle at 20% 10%, rgba(185,74,58,0.05), transparent 60%),
    radial-gradient(circle at 90% 90%, rgba(26,22,18,0.06), transparent 50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  min-height: 100dvh;
  padding: 12px 14px 6px;
  position: relative;
  overflow-x: hidden;
  touch-action: manipulation;
}

/* SVG noise grain for paper texture */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.18;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 0.7 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  mix-blend-mode: multiply;
  z-index: 0;
}

header, main, footer { position: relative; z-index: 1; width: 100%; max-width: 460px; }

/* --- Header --- */
header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 2px 2px 10px;
  border-bottom: 2px solid var(--ink);
  margin-bottom: 10px;
  gap: 8px;
}
.brand h1 {
  font-family: 'Special Elite', 'Courier New', monospace;
  font-size: clamp(2rem, 8vw, 2.5rem);
  letter-spacing: 0.04em;
  line-height: 1;
}
.subtitle {
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  color: var(--ink-soft);
  margin-top: 4px;
  text-transform: uppercase;
}
.actions { display: flex; gap: 5px; flex-wrap: wrap; justify-content: flex-end; }
.icon-btn {
  background: transparent;
  border: 1.5px solid var(--ink);
  color: var(--ink);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-family: inherit;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.icon-btn:hover, .icon-btn:focus-visible {
  background: var(--ink);
  color: var(--paper);
  outline: none;
}
/* --- Top play bar (sits between header and board) --- */
.play-bar {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 460px;
  margin-bottom: 10px;
}
.play-button {
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--ink);
  color: var(--paper);
  border: none;
  padding: 10px 16px;
  font-family: 'Special Elite', monospace;
  font-size: 1rem;
  letter-spacing: 0.1em;
  cursor: pointer;
  border-radius: 3px;
  transition: opacity 0.15s ease, transform 0.05s ease;
  box-shadow: 3px 3px 0 var(--ink);
  touch-action: manipulation;
}
.play-button:hover { opacity: 0.92; }
.play-button:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--ink); }
.play-button:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  box-shadow: none;
}
.play-button .play-icon { font-size: 1.05rem; }
.play-button .play-label {
  text-transform: uppercase;
  font-size: 0.9rem;
}
.streak-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  border: 1.5px solid var(--ink);
  padding: 4px 10px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.75rem;
  font-family: 'Special Elite', monospace;
  height: 32px;
}
.streak-pill::before { content: "·–·"; letter-spacing: 0.18em; opacity: 0.7; font-size: 0.65rem; }

/* --- Board --- */
#board {
  display: grid;
  grid-template-rows: repeat(6, 1fr);
  gap: 6px;
  margin: 0 auto 10px;
  width: 100%;
  max-width: 360px;
}
.row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
  border-radius: 4px;
  transition: background 0.15s ease;
}
.row.guessed { cursor: pointer; }
.row.guessed:hover { background: rgba(26,22,18,0.06); }
.tile {
  aspect-ratio: 1 / 1.18;
  border: 2px solid rgba(26,22,18,0.22);
  background: transparent;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: 'JetBrains Mono', monospace;
  user-select: none;
  transition: border-color 0.15s ease;
}
.tile.filled { border-color: var(--ink); }
.tile.pop { animation: pop 0.14s ease; }
.tile.flip { animation: flip 0.5s ease forwards; }
@keyframes pop { 0% { transform: scale(1); } 50% { transform: scale(1.08); } 100% { transform: scale(1); } }
@keyframes flip { 0% { transform: rotateX(0); } 50% { transform: rotateX(-90deg); } 100% { transform: rotateX(0); } }
.tile .letter { font-size: clamp(1.6rem, 7vw, 2rem); font-weight: 700; letter-spacing: 0.02em; line-height: 1; }
.tile.correct, .tile.present, .tile.absent { color: var(--paper); border-color: transparent; }
.tile.correct { background: var(--correct); }
.tile.present { background: var(--present); }
.tile.absent  { background: var(--absent);  }

/* --- Message --- */
#message {
  text-align: center;
  min-height: 22px;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--signal);
  margin-bottom: 6px;
}
/* --- Keyboard --- */
#keyboard {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 100%;
  margin-top: auto;
  padding-bottom: 4px;
  user-select: none;
}
.kb-row { display: flex; justify-content: center; gap: 4px; }
.key {
  flex: 1;
  min-width: 0;
  max-width: 42px;
  height: 50px;
  border: 1.5px solid var(--ink);
  background: rgba(255,255,255,0.25);
  color: var(--ink);
  font-family: 'JetBrains Mono', monospace;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 3px;
  padding: 0;
  transition: background 0.15s ease, transform 0.05s ease;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}
.key:active { transform: translateY(1px); }
.key.wide { flex: 1.6; max-width: 70px; font-size: 0.72rem; letter-spacing: 0.08em; }
.key.enter { background: var(--ink); color: var(--paper); }
.key.enter:hover { opacity: 0.9; }
.key.correct { background: var(--correct); color: var(--paper); border-color: var(--correct); }
.key.present { background: var(--present); color: var(--paper); border-color: var(--present); }
.key.absent  { background: var(--absent);  color: var(--paper); border-color: var(--absent);  }

/* --- Modal --- */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(26,22,18,0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 16px;
  animation: fade 0.18s ease;
}
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
.modal[hidden] { display: none; }
.modal-card {
  background: var(--paper);
  border: 2px solid var(--ink);
  padding: 22px;
  max-width: 420px;
  width: 100%;
  max-height: 84vh;
  overflow-y: auto;
  box-shadow: 5px 5px 0 var(--ink);
}
.modal-card h2 { font-family: 'Special Elite', monospace; margin-bottom: 10px; font-size: 1.35rem; }
.modal-card p { font-size: 0.82rem; line-height: 1.55; margin-bottom: 10px; color: var(--ink-soft); }
.modal-card .tip { font-style: italic; color: var(--ink); }
.legend { list-style: none; margin: 12px 0; display: flex; flex-direction: column; gap: 6px; font-size: 0.78rem; }
.legend li { display: flex; align-items: center; gap: 8px; }
.swatch { display: inline-block; width: 18px; height: 18px; border-radius: 2px; }
.swatch.correct { background: var(--correct); }
.swatch.present { background: var(--present); }
.swatch.absent  { background: var(--absent);  }
.close-modal {
  margin-top: 12px;
  background: var(--ink);
  color: var(--paper);
  border: none;
  padding: 8px 16px;
  font-family: inherit;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  cursor: pointer;
  border-radius: 2px;
}

#chart-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(64px, 1fr));
  gap: 5px;
  margin: 8px 0;
}
.chart-cell {
  border: 1.5px solid var(--ink);
  background: transparent;
  padding: 8px 4px;
  cursor: pointer;
  font-family: inherit;
  display: flex;
  flex-direction: column;
  align-items: center;
  border-radius: 3px;
  transition: background 0.12s ease;
}
.chart-cell:hover { background: var(--paper-dark); }
.chart-cell .chart-letter { font-size: 1.05rem; font-weight: 700; line-height: 1; }
.chart-cell .chart-code { font-size: 0.68rem; letter-spacing: 0.18em; opacity: 0.8; margin-top: 4px; line-height: 1; }

/* --- Stats --- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin: 12px 0;
}
.stat-cell {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.stat-num {
  font-family: 'Special Elite', monospace;
  font-size: 1.5rem;
  line-height: 1;
}
.stat-label {
  font-size: 0.55rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-top: 4px;
}
.stat-section-title {
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 14px 0 6px;
}
.dist-row {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  margin-bottom: 3px;
}
.dist-label {
  width: 14px;
  font-weight: 700;
}
.dist-bar {
  flex: 1;
  background: rgba(26,22,18,0.08);
  height: 18px;
  border-radius: 2px;
  overflow: hidden;
}
.dist-fill {
  background: var(--correct);
  color: var(--paper);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 0 5px;
  font-size: 0.65rem;
  font-weight: 700;
  min-width: 20px;
  border-radius: 2px;
}
.next-word {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid rgba(26,22,18,0.18);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.next-word .countdown {
  font-family: 'Special Elite', monospace;
  font-size: 1.05rem;
  letter-spacing: 0.06em;
  color: var(--ink);
}

footer {
  font-size: 0.55rem;
  letter-spacing: 0.14em;
  color: var(--ink-soft);
  text-align: center;
  margin-top: 6px;
  text-transform: uppercase;
  padding-bottom: 2px;
}

/* Mobile: keep header → play button → board → keyboard within one viewport. */
@media (max-height: 760px) {
  body { padding: 8px 12px 4px; }
  header { padding: 2px 2px 6px; margin-bottom: 6px; }
  .brand h1 { font-size: clamp(1.6rem, 6.5vw, 2.1rem); }
  .subtitle { display: none; }
  .play-bar { margin-bottom: 8px; }
  .play-button { padding: 9px 14px; font-size: 0.92rem; box-shadow: 2px 2px 0 var(--ink); }
  #board { gap: 5px; max-width: 320px; }
  .row { gap: 5px; }
  .tile .letter { font-size: clamp(1.3rem, 6vw, 1.7rem); }
  #message { min-height: 18px; font-size: 0.7rem; margin-bottom: 4px; }
  #keyboard { gap: 4px; }
  .key { height: 44px; font-size: 0.95rem; }
  .key.wide { font-size: 0.65rem; }
  footer { font-size: 0.5rem; margin-top: 4px; }
}

@media (max-width: 360px) {
  .key { max-width: 36px; height: 42px; font-size: 0.88rem; }
  .key.wide { max-width: 56px; font-size: 0.6rem; }
  .icon-btn { width: 28px; height: 28px; font-size: 0.85rem; }
  .play-button { padding: 8px 12px; font-size: 0.85rem; letter-spacing: 0.06em; }
  .actions { gap: 4px; }
}