/* Γραφόλεξο — "kafeneio table" aesthetic.
   Light: warm paper + aegean ink + terracotta accents.
   Dark: aegean night. All theming via custom properties; [data-theme]
   set by app.js (defaults to prefers-color-scheme). */

:root {
  --paper: #f5efe3;
  --paper-raised: #fdf9f0;
  --ink: #232a35;
  --ink-soft: #5c6470;
  --aegean: #235e9e;
  --aegean-deep: #17436f;
  --terracotta: #c2643c;
  --terracotta-soft: #e9c9b8;
  --olive: #6d7a45;
  --olive-soft: #dfe3c8;
  --tile-face: #fffdf6;
  --tile-edge: #e2d8c3;
  --tile-shadow: rgba(84, 66, 41, 0.18);
  --line: #d9cfba;
  --danger: #a8452f;
  --meander: rgba(35, 94, 158, 0.25);
  --radius: 14px;
  --font-body: "GFS Neohellenic", "Georgia", serif;
  --font-display: "GFS Didot", "Georgia", serif;
}

[data-theme="dark"] {
  --paper: #141b26;
  --paper-raised: #1c2533;
  --ink: #e9e2d2;
  --ink-soft: #97a0ad;
  --aegean: #6ea8e8;
  --aegean-deep: #a9cdf5;
  --terracotta: #de8a5e;
  --terracotta-soft: #4a3225;
  --olive: #a9b573;
  --olive-soft: #333d22;
  --tile-face: #243044;
  --tile-edge: #17202f;
  --tile-shadow: rgba(0, 0, 0, 0.45);
  --line: #2c374a;
  --danger: #e07a5f;
  --meander: rgba(110, 168, 232, 0.3);
}

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

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.15rem;
  line-height: 1.35;
  min-height: 100dvh;
  -webkit-tap-highlight-color: transparent;
}

/* Subtle paper grain */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.5;
  background-image: radial-gradient(rgba(120, 100, 60, 0.05) 1px, transparent 1px);
  background-size: 5px 5px;
}

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

.app {
  max-width: 26rem;
  margin: 0 auto;
  padding: 0.75rem 1rem 2rem;
  position: relative;
}
@media (min-width: 900px) {
  .app.in-game { max-width: 52rem; }
}

/* ----- Header ----- */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.4rem 0 0.2rem;
}
.wordmark {
  font-family: var(--font-display);
  font-size: 2rem;
  letter-spacing: 0.02em;
  color: var(--aegean-deep);
  text-decoration: none;
}
.wordmark .fo { color: var(--terracotta); }
.header-side { display: flex; gap: 0.4rem; align-items: center; }
.icon-btn {
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 1.4rem;
  color: var(--ink-soft);
  transition: background 0.15s;
}
.icon-btn:hover { background: var(--line); }

/* Meander divider — the Greek key motif, drawn with borders */
.meander {
  height: 8px;
  margin: 0.2rem 0 1rem;
  background:
    repeating-linear-gradient(90deg,
      var(--meander) 0 2px, transparent 2px 8px, var(--meander) 8px 10px,
      transparent 10px 12px, var(--meander) 12px 14px, transparent 14px 24px);
  mask-image: linear-gradient(90deg, transparent, #000 15%, #000 85%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 15%, #000 85%, transparent);
}

.timer {
  font-variant-numeric: tabular-nums;
  color: var(--ink-soft);
  font-size: 1rem;
  min-width: 3.2rem;
  text-align: right;
}
.timer[hidden] { display: none; }

/* ----- Screens ----- */
.screen { display: none; }
.screen.active { display: block; }
.screen-fade { animation: fadeUp 0.35s ease both; }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

/* ----- Home ----- */
.home-title {
  font-family: var(--font-display);
  font-size: 2.6rem;
  margin: 1.2rem 0 0.1rem;
  color: var(--aegean-deep);
}
.home-tagline { color: var(--ink-soft); margin: 0 0 1.6rem; }
.card {
  display: flex;
  align-items: center;
  gap: 1rem;
  width: 100%;
  text-align: left;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  margin-bottom: 0.8rem;
  box-shadow: 0 2px 0 var(--tile-shadow);
  transition: transform 0.12s, box-shadow 0.12s;
}
.card:hover { transform: translateY(-2px); box-shadow: 0 4px 0 var(--tile-shadow); }
.card:active { transform: translateY(1px); box-shadow: 0 1px 0 var(--tile-shadow); }
.card-emoji { font-size: 1.8rem; }
.card-title { font-size: 1.3rem; font-weight: 700; }
.card-desc { color: var(--ink-soft); font-size: 1rem; }
.card-pill {
  margin-left: auto;
  font-size: 0.85rem;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  white-space: nowrap;
}
.pill-progress { background: var(--terracotta-soft); color: var(--terracotta); }
.pill-done { background: var(--olive-soft); color: var(--olive); }
.pill-muted { background: var(--line); color: var(--ink-soft); }

/* ----- Game layout ----- */
.game-wrap { display: grid; gap: 1.2rem; }
@media (min-width: 900px) {
  .game-wrap { grid-template-columns: minmax(0, 1fr) 18rem; align-items: start; }
}

.status-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.5rem;
  min-height: 1.6rem;
}
.status-left { font-weight: 700; color: var(--ink-soft); }
.status-side { display: flex; gap: 0.5rem; align-items: center; }
.hint-btn {
  background: var(--olive-soft);
  color: var(--olive);
  font-weight: 700;
  padding: 0.1rem 0.7rem;
  border-radius: 999px;
  transition: transform 0.1s, opacity 0.2s;
}
.hint-btn:active { transform: scale(0.94); }
.hint-btn:disabled { opacity: 0.4; cursor: default; }
.bonus-chip {
  background: var(--terracotta-soft);
  color: var(--terracotta);
  font-weight: 700;
  padding: 0.1rem 0.7rem;
  border-radius: 999px;
  transition: transform 0.15s;
}
.bonus-chip.bump { animation: bump 0.3s; }
@keyframes bump { 50% { transform: scale(1.25); } }

/* Current trace readout */
.trace-word {
  text-align: center;
  font-size: 1.7rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  min-height: 2.2rem;
  color: var(--aegean-deep);
}
.trace-word.shake { animation: shake 0.35s; color: var(--danger); }
@keyframes shake {
  20% { transform: translateX(-6px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}
.trace-word.ok { animation: pop 0.3s; color: var(--olive); }
@keyframes pop { 40% { transform: scale(1.15); } }

/* ----- The grid ----- */
.grid-box {
  position: relative;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}
/* The board is a graph: circular letter-nodes over an SVG edge mesh. */
.grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  aspect-ratio: 1;
  position: relative;
  z-index: 1;
}
.tile {
  position: relative;
  border-radius: 50%;
  aspect-ratio: 1;
  align-self: center;
  justify-self: center;
  width: 100%;
  background: var(--tile-face);
  border: 2px solid var(--tile-edge);
  box-shadow: 0 3px 0 var(--tile-shadow), inset 0 1px 0 rgba(255, 255, 255, 0.55);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: clamp(1.5rem, 8vw, 2.3rem);
  color: var(--ink);
  display: grid;
  place-items: center;
  transition: transform 0.1s, background 0.15s, opacity 0.3s;
}
[data-theme="dark"] .tile { box-shadow: 0 3px 0 var(--tile-shadow), inset 0 1px 0 rgba(255, 255, 255, 0.06); }

.tile.sel {
  background: var(--aegean);
  color: #fff;
  border-color: var(--aegean-deep);
  transform: scale(1.08);
}

.edges-svg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}
.edges-svg line {
  stroke: var(--ink-soft);
  stroke-width: 3;
  stroke-linecap: round;
  opacity: 0.35;
}
.tile.dead {
  opacity: 0;
  pointer-events: none;
  transform: scale(0.5) rotate(8deg);
}
.tile.hint { animation: hintBlink 0.5s ease 3; }
@keyframes hintBlink {
  50% { background: var(--terracotta); color: #fff; transform: scale(1.12); }
}
.tile.vanishing { animation: vanish 0.45s ease forwards; }
@keyframes vanish {
  40% { transform: scale(1.15) rotate(-3deg); opacity: 1; }
  100% { transform: scale(0.3) rotate(10deg); opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .tile.vanishing { animation: none; opacity: 0; }
  .screen-fade { animation: none; }
}

/* SVG trace overlay */
.trace-svg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
}
.trace-svg polyline {
  fill: none;
  stroke: var(--terracotta);
  stroke-width: 9;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.55;
}

/* ----- Found words panel ----- */
.found-panel {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  max-height: 19rem;
  overflow-y: auto;
}
@media (min-width: 900px) { .found-panel { max-height: 30rem; } }
.found-panel h2 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  color: var(--ink-soft);
  font-weight: 700;
}
.found-empty { color: var(--ink-soft); font-size: 1rem; }
.found-item { margin-bottom: 0.55rem; animation: fadeUp 0.3s ease both; }
.found-item b { color: var(--aegean-deep); }
.found-item.bonus b { color: var(--terracotta); }
.found-item.core b { color: var(--olive); }
.found-item .def { color: var(--ink-soft); font-size: 0.98rem; display: block; }

/* ----- Archive tabs ----- */
.tabs {
  display: flex;
  gap: 4px;
  background: var(--line);
  border-radius: 999px;
  padding: 4px;
  margin-bottom: 1rem;
}
.tab {
  flex: 1;
  padding: 0.4rem 0;
  border-radius: 999px;
  font-weight: 700;
  color: var(--ink-soft);
  transition: background 0.15s, color 0.15s;
}
.tab[aria-selected="true"] {
  background: var(--paper-raised);
  color: var(--aegean-deep);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

/* ----- Dialogs ----- */
dialog {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-raised);
  color: var(--ink);
  padding: 1.4rem 1.5rem;
  max-width: 22rem;
  width: calc(100vw - 3rem);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}
dialog::backdrop { background: rgba(20, 22, 30, 0.45); backdrop-filter: blur(2px); }
dialog h2 { font-family: var(--font-display); margin: 0 0 0.8rem; color: var(--aegean-deep); }
.menu-list { display: flex; flex-direction: column; gap: 0.1rem; }
.menu-item {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.55rem 0.4rem;
  border-radius: 8px;
  text-align: left;
  width: 100%;
}
.menu-item:hover { background: var(--line); }
.menu-item .grow { flex: 1; }
.switch { position: relative; width: 2.6rem; height: 1.4rem; border-radius: 999px; background: var(--line); transition: background 0.2s; }
.switch::after {
  content: "";
  position: absolute;
  top: 2px; left: 2px;
  width: 1.15rem; height: 1.15rem;
  border-radius: 50%;
  background: var(--paper-raised);
  box-shadow: 0 1px 2px rgba(0,0,0,0.3);
  transition: left 0.2s;
}
.switch.on { background: var(--olive); }
.switch.on::after { left: calc(100% - 1.25rem); }

.howto-steps { padding-left: 1.2rem; margin: 0; }
.howto-steps li { margin-bottom: 0.6rem; }

/* ----- Win dialog ----- */
.win-title { font-size: 1.9rem; text-align: center; }
#stats-body h3 { margin: 0.6rem 0 0.4rem; color: var(--ink-soft); font-size: 1.05rem; }
.win-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
  margin: 1rem 0;
}
.win-stat {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
  text-align: center;
  padding: 0.5rem;
}
.win-stat b { font-size: 1.5rem; display: block; color: var(--aegean-deep); }
.win-stat span { color: var(--ink-soft); font-size: 0.9rem; }
.btn {
  display: block;
  width: 100%;
  background: var(--aegean);
  color: #fff;
  font-weight: 700;
  font-size: 1.15rem;
  border-radius: 10px;
  padding: 0.65rem;
  margin-top: 0.5rem;
  transition: transform 0.1s, filter 0.15s;
}
.btn:hover { filter: brightness(1.08); }
.btn:active { transform: scale(0.98); }
.btn.secondary { background: transparent; color: var(--aegean-deep); border: 1px solid var(--line); }

/* Errors */
.err-box { text-align: center; padding: 2.5rem 0; color: var(--ink-soft); }
.err-box .btn { max-width: 12rem; margin: 1rem auto 0; }

textarea {
  width: 100%;
  min-height: 6rem;
  font-family: inherit;
  font-size: 1rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  color: var(--ink);
  padding: 0.6rem;
  resize: vertical;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 2rem;
  transform: translateX(-50%);
  background: var(--ink);
  color: var(--paper);
  padding: 0.5rem 1.1rem;
  border-radius: 999px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
  z-index: 50;
}
.toast.show { opacity: 1; }