/* SPDX-FileCopyrightText: 2026 pabs-1 e i contributori del Gioco del 100
   SPDX-License-Identifier: AGPL-3.0-or-later */
/* ===== Gioco del 100 ===== */

:root {
  --bg: #f6f1e7;
  --surface: #fffdf8;
  --ink: #2a2620;
  --ink-soft: #6d6557;
  --line: #e2d9c7;
  --cell: #fbf7ef;
  --cell-press: #efe6d3;
  --accent: #d9572b;
  --accent-ink: #ffffff;
  --legal: #2f7d6d;
  --legal-bg: #e1f0ea;
  --bad: #c62f2f;
  --filled-s: 55%;
  --filled-l: 86%;
  --focus: #1f5fd1;
  --shadow: 0 1px 2px rgb(60 45 20 / 0.08), 0 6px 20px rgb(60 45 20 / 0.08);

  --gutter: 12px;
  --safe-t: env(safe-area-inset-top, 0px);
  --safe-r: env(safe-area-inset-right, 0px);
  --safe-b: env(safe-area-inset-bottom, 0px);
  --safe-l: env(safe-area-inset-left, 0px);

  /* Altezza reale del viewport: 100vh come fallback, 100dvh dove esiste
     (iOS Safari 15.4+, Chrome 108+, Firefox 101+) così le barre del browser
     non coprono la griglia. */
  --vh: 100vh;
  color-scheme: light;
}

@supports (height: 100dvh) {
  :root { --vh: 100dvh; }
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1b1a17;
    --surface: #26241f;
    --ink: #f1ebdf;
    --ink-soft: #aaa192;
    --line: #3a372f;
    --cell: #2b2923;
    --cell-press: #3a372f;
    --accent: #f07a4a;
    --accent-ink: #1b1a17;
    --legal: #6fcdb6;
    --legal-bg: #1f3a33;
    --bad: #ff6b6b;
    --filled-s: 30%;
    --filled-l: 27%;
    --focus: #8ab4ff;
    --shadow: 0 1px 2px rgb(0 0 0 / 0.3), 0 6px 20px rgb(0 0 0 / 0.3);
    color-scheme: dark;
  }
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  overscroll-behavior: none;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.4;
  overscroll-behavior: none;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

/* ----- Layout ----- */

.app {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 100%;
  max-width: 760px;
  height: 100vh;
  height: var(--vh);
  margin: 0 auto;
  padding:
    calc(var(--safe-t) + 8px)
    calc(var(--safe-r) + var(--gutter))
    calc(var(--safe-b) + 10px)
    calc(var(--safe-l) + var(--gutter));
  overflow: hidden;
}

.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 6px 12px;
  width: 100%;
  flex: none;
}

.brand {
  flex: 1 1 0;
  min-width: 0;
}

.title {
  margin: 0;
  /* I titoli tradotti sono più lunghi di "Gioco del 100": si rimpiccioliscono
     un po' sugli schermi stretti e, se serve, vanno a capo. */
  font-size: clamp(1.3rem, 6.5vw, 1.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.title-num {
  color: var(--accent);
}

.dedica {
  margin: 2px 0 0;
  font-size: 0.7rem;
  font-style: italic;
  color: var(--ink-soft);
}

.stats {
  display: flex;
  flex: 1 0 100%;
  justify-content: center;
  gap: clamp(10px, 4vw, 28px);
  margin: 0;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 3.2em;
}

.stat dt {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

.stat dd {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}

/* L'area della griglia prende tutto lo spazio rimasto; la griglia è il
   quadrato più grande che ci sta dentro. */
.board-area {
  flex: 1 1 auto;
  min-height: 0;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.board {
  /* Fallback senza container query: lato = min(larghezza, altezza) del
     viewport meno gutter, safe area e barre (≈ 200px di intestazione e comandi). */
  width: min(
    100vw - 2 * var(--gutter) - var(--safe-l) - var(--safe-r),
    var(--vh) - 200px - var(--safe-t) - var(--safe-b),
    720px
  );
  min-width: 240px;
  aspect-ratio: 1 / 1;
  display: grid;
  grid-template-rows: repeat(10, 1fr);
  gap: 2px;
  padding: 2px;
  background: var(--line);
  border-radius: 10px;
  box-shadow: var(--shadow);
  container-type: inline-size;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}

@supports (width: 1cqmin) {
  .board-area { container-type: size; }
  .board { width: min(100cqw, 100cqh, 720px); }
}

/* Browser senza aspect-ratio (Safari < 15): altezza esplicita uguale alla larghezza. */
@supports not (aspect-ratio: 1 / 1) {
  .board { height: min(100vw - 2 * var(--gutter), 100vh - 200px, 720px); }
}

.row {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: 2px;
  min-height: 0;
}

.cell {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  min-height: 0;
  border-radius: 5px;
  background: var(--cell);
  color: var(--ink);
  font-size: clamp(10px, 3.6vmin, 26px);
  font-size: 4.1cqi;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  cursor: default;
  outline: none;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
  transition: background-color 0.15s ease, transform 0.08s ease;
}

.cell.filled {
  /* Il colore scorre dall'ambra al verde man mano che si avanza. */
  background: hsl(calc(38 + var(--p, 0) * 110) var(--filled-s) var(--filled-l));
}

.cell.last {
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 0 0 2px var(--accent);
  z-index: 1;
}

.board.ready .cell,
.cell.legal {
  cursor: pointer;
}

/* Evidenziazione delle mosse legali (toggle "Mosse"). */
.board.hints .cell.legal {
  background: var(--legal-bg);
  box-shadow: inset 0 0 0 2px var(--legal);
}

.board.hints .cell.legal::after {
  content: "";
  width: 22%;
  height: 22%;
  border-radius: 50%;
  background: var(--legal);
  opacity: 0.75;
}

@media (hover: hover) and (pointer: fine) {
  .board.ready .cell:hover,
  .cell.legal:hover {
    background: var(--cell-press);
  }
  .board.hints .cell.legal:hover {
    background: var(--legal);
  }
}

/* Feedback al tocco: non affidarsi a :hover. */
.cell.pressed,
.cell:active {
  transform: scale(0.9);
}

.cell.placed {
  animation: pop 0.22s ease-out;
}

.cell.invalid {
  animation: shake 0.3s ease;
  box-shadow: inset 0 0 0 2px var(--bad);
}

.cell:focus-visible,
.board.show-cursor .cell[tabindex="0"] {
  outline: 3px solid var(--focus);
  outline-offset: 1px;
  z-index: 2;
}

@keyframes pop {
  0% { transform: scale(0.6); }
  70% { transform: scale(1.08); }
  100% { transform: scale(1); }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-3px); }
  75% { transform: translateX(3px); }
}

.board.over .cell {
  cursor: default;
}

.status {
  flex: none;
  margin: 0;
  min-height: 1.4em;
  font-size: 0.95rem;
  color: var(--ink-soft);
  text-align: center;
}

/* ----- Pulsanti ----- */

.controls {
  display: flex;
  flex: none;
  gap: 8px;
  width: 100%;
  max-width: 520px;
}

.controls .btn {
  flex: 1 1 0;
  min-width: 0;
  padding: 0 8px;
}

/* Su schermi stretti "Nuova partita" diventa "Nuova" a video, ma resta
   completo per i lettori di schermo. */
@media (max-width: 400px) {
  .controls .btn { font-size: 0.9rem; gap: 5px; }
  .controls .opt {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 44px;
  min-width: 44px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
  transition: background-color 0.15s ease, transform 0.08s ease;
}

.btn:active,
.btn.pressed {
  transform: scale(0.96);
  background: var(--cell-press);
}

.btn:disabled {
  opacity: 0.45;
  cursor: default;
  transform: none;
}

.btn:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

@media (hover: hover) and (pointer: fine) {
  .btn:not(:disabled):hover {
    background: var(--cell-press);
  }
}

.btn-icon {
  flex: none;
  width: 44px;
  padding: 0;
  border-radius: 50%;
  font-size: 1.2rem;
  font-weight: 800;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}

@media (hover: hover) and (pointer: fine) {
  .btn-primary:not(:disabled):hover {
    background: var(--accent);
    filter: brightness(1.08);
  }
}

.btn-primary:active {
  background: var(--accent);
  filter: brightness(0.95);
}

.btn-quiet {
  border-color: transparent;
  background: transparent;
  color: var(--ink-soft);
}

.btn.confirm {
  border-color: var(--bad);
  color: var(--bad);
}

.switch {
  position: relative;
  flex: none;
  width: 30px;
  height: 18px;
  border-radius: 9px;
  background: var(--line);
  transition: background-color 0.15s ease;
}

.switch::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--surface);
  box-shadow: 0 1px 2px rgb(0 0 0 / 0.25);
  transition: transform 0.15s ease;
}

.btn-toggle[aria-pressed="true"] .switch {
  background: var(--legal);
}

.btn-toggle[aria-pressed="true"] .switch::after {
  transform: translateX(12px);
}

/* Telefoni molto stretti (320px): interruttore e testo un po' più piccoli,
   così anche "Jugadas"/"Jogadas" stanno nel pulsante. */
@media (max-width: 340px) {
  .controls { gap: 6px; }
  .controls .btn { font-size: 0.84rem; gap: 4px; padding: 0 6px; }
  .switch { width: 24px; height: 14px; }
  .switch::after { width: 10px; height: 10px; }
  .btn-toggle[aria-pressed="true"] .switch::after { transform: translateX(10px); }
}

/* ----- Overlay vittoria / sconfitta ----- */

.overlay {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  padding:
    calc(var(--safe-t) + 16px)
    calc(var(--safe-r) + 16px)
    calc(var(--safe-b) + 16px)
    calc(var(--safe-l) + 16px);
  background: rgb(20 16 10 / 0.45);
  animation: fade 0.2s ease-out;
}

.overlay[hidden] {
  display: none;
}

.dialog {
  width: 100%;
  max-width: 360px;
  max-height: 100%;
  overflow: auto;
  padding: 24px 20px 16px;
  border-radius: 18px;
  background: var(--surface);
  box-shadow: 0 20px 60px rgb(0 0 0 / 0.3);
  text-align: center;
  animation: rise 0.25s ease-out;
}

.dialog .dialog-badge {
  margin: 0 auto 8px;
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.dialog h2 {
  margin: 0 0 6px;
  font-size: 1.4rem;
}

.dialog p {
  margin: 0 0 18px;
  color: var(--ink-soft);
}

.dialog-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.share-status {
  min-height: 0;
  margin: 10px 0 0 !important;
  font-size: 0.9rem;
}

.share-status:empty {
  display: none;
}

.share-text {
  width: 100%;
  margin-top: 8px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--cell);
  color: var(--ink);
  font: inherit;
  font-size: 0.85rem;
  line-height: 1.4;
  resize: none;
}

.share-text[hidden] {
  display: none;
}

.dialog-actions .btn[hidden] {
  display: none;
}

@keyframes fade {
  from { opacity: 0; }
}

@keyframes rise {
  from { transform: translateY(16px) scale(0.97); opacity: 0; }
}

.noscript {
  position: fixed;
  inset: auto 16px 16px;
  padding: 12px;
  border-radius: 10px;
  background: var(--surface);
  text-align: center;
}

/* ----- Schermi bassi (telefono in orizzontale) ----- */

@media (max-height: 520px) and (orientation: landscape) {
  .app {
    display: grid;
    grid-template-columns: 1fr auto;
    grid-template-rows: auto 1fr auto auto;
    column-gap: 16px;
    max-width: none;
  }
  .topbar {
    grid-column: 2;
    grid-row: 1;
    display: grid;
    grid-template-columns: 1fr auto;
    max-width: 300px;
  }
  .stats { grid-column: 1 / -1; }
  .title { font-size: 1.35rem; }
  .board-area { grid-column: 1; grid-row: 1 / -1; height: 100%; }
  .status { grid-column: 2; grid-row: 3; max-width: 240px; }
  .controls { grid-column: 2; grid-row: 4; flex-direction: column; width: 220px; }
  .board {
    width: min(100vw - 280px, var(--vh) - 24px - var(--safe-t) - var(--safe-b), 720px);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

/* ----- Pagina regole ----- */

.rules {
  max-width: 640px;
  margin: 0 auto;
  padding:
    calc(var(--safe-t) + 16px)
    calc(var(--safe-r) + 20px)
    calc(var(--safe-b) + 32px)
    calc(var(--safe-l) + 20px);
}

.rules h1 {
  margin: 8px 0 4px;
  font-size: 1.8rem;
}

.rules h2 {
  margin: 28px 0 8px;
  font-size: 1.15rem;
}

.rules p,
.rules li {
  color: var(--ink);
}

.rules ul {
  padding-left: 1.2em;
}

.rules li + li {
  margin-top: 6px;
}

.rules kbd {
  padding: 1px 6px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--surface);
  font: inherit;
  font-size: 0.9em;
}

.rules-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 12px;
  margin-bottom: 8px;
}

.lang-picker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.lang-picker select {
  max-width: 60vw;
  padding-right: 10px;
  font-weight: 500;
  color: var(--ink);
}

.move-diagram {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 3px;
  width: min(100%, 280px);
  margin: 12px 0;
}

.move-diagram span {
  aspect-ratio: 1 / 1;
  border-radius: 4px;
  background: var(--cell);
  border: 1px solid var(--line);
}

.move-diagram .from {
  background: var(--accent);
  border-color: var(--accent);
}

.move-diagram .to {
  background: var(--legal-bg);
  border: 2px solid var(--legal);
}

.lang-links {
  margin-top: 32px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
  line-height: 2;
  text-align: center;
}

.lang-links a {
  color: var(--ink-soft);
  text-decoration: none;
  white-space: nowrap;
}

.lang-links a:hover,
.lang-links a:focus-visible {
  color: var(--ink);
  text-decoration: underline;
}

.lang-links a[aria-current="page"] {
  color: var(--ink);
  font-weight: 700;
}

.lang-links span[aria-hidden] {
  margin: 0 6px;
  color: var(--line);
}

.rules .license {
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--ink-soft);
  text-align: center;
}

.rules .license a {
  color: inherit;
}

.rules .dedica {
  margin-top: 32px;
  color: var(--ink-soft);
  text-align: center;
}

/* Il coreano va a capo tra le parole, non dentro (cinese e giapponese sì). */
:lang(ko) {
  word-break: keep-all;
  overflow-wrap: anywhere;
}

/* ----- Pagina 404 ----- */

.not-found {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  min-height: 100vh;
  min-height: var(--vh);
  padding: 24px;
  text-align: center;
}

.not-found-code {
  margin: 0;
  font-size: 5rem;
  font-weight: 800;
  line-height: 1;
  color: var(--line);
}