/* ---------- token ---------- */
:root {
  --bg: #0a0d14;
  --bg-2: #131926;
  --surface: rgba(255, 255, 255, 0.05);
  --surface-2: rgba(255, 255, 255, 0.09);
  --border: rgba(255, 255, 255, 0.1);
  --text: #f2f5fb;
  --muted: #93a0bd;
  --accent: #f4a63a;
  --accent-2: #f4627a;
  --success: #45d99b;
  --ring: rgba(244, 166, 58, 0.45);
  --shadow: 0 22px 50px rgba(0, 0, 0, 0.5);
  --tile-shadow: 0 6px 14px rgba(0, 0, 0, 0.28);
  --tile-face: linear-gradient(155deg, #1c2436, #101724);
  --gap: clamp(5px, 0.75vmin, 12px);
}

:root[data-theme="light"] {
  --bg: #f4f1ec;
  --bg-2: #ffffff;
  --surface: rgba(255, 255, 255, 0.8);
  --surface-2: #ffffff;
  --border: rgba(35, 30, 25, 0.12);
  --text: #241f1a;
  --muted: #7a6f62;
  --accent: #d97a12;
  --accent-2: #d94661;
  --success: #14996a;
  --ring: rgba(217, 122, 18, 0.35);
  --shadow: 0 22px 50px rgba(80, 60, 35, 0.16);
  --tile-shadow: 0 6px 14px rgba(90, 66, 30, 0.18);
  --tile-face: linear-gradient(155deg, #fffdf8, #e7dccb);
}

* { box-sizing: border-box; }

html { height: 100%; }

body {
  /* L'app occupa esattamente la finestra: il tavolo non deve mai andare fuori schermo. */
  height: 100dvh;
  margin: 0;
  padding: clamp(10px, 1.6vmin, 22px);
  display: flex;
  flex-direction: column;
  gap: clamp(10px, 1.6vmin, 20px);
  overflow: hidden;
  font-family: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", sans-serif;
  color: var(--text);
  background: var(--bg);
  transition: background 0.35s ease, color 0.35s ease;
}

.backdrop {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(48vw 48vw at 8% -6%, color-mix(in srgb, var(--accent) 26%, transparent), transparent 60%),
    radial-gradient(42vw 42vw at 96% 4%, color-mix(in srgb, var(--accent-2) 22%, transparent), transparent 58%),
    radial-gradient(70vw 46vw at 50% 116%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 62%);
  opacity: 0.5;
}

.mono { font-variant-numeric: tabular-nums; letter-spacing: 0.01em; }

/* ---------- barra dei comandi ---------- */
.bar {
  flex: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px clamp(10px, 1.6vw, 22px);
  padding: clamp(8px, 1.1vmin, 14px) clamp(12px, 1.6vw, 20px);
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.bar-group { display: flex; align-items: center; gap: 8px; }
.brand { margin-right: auto; }
.actions { margin-left: auto; }

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 11px;
  color: #fff;
  background: linear-gradient(140deg, var(--accent), var(--accent-2));
  box-shadow: 0 8px 18px color-mix(in srgb, var(--accent) 40%, transparent);
}

.brand-mark svg { width: 19px; height: 19px; }

h1 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* pulsanti */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 11px;
  cursor: pointer;
  transition: transform 0.14s ease, background 0.2s ease, border-color 0.2s ease;
}

.btn svg { width: 16px; height: 16px; }
.btn:hover { border-color: color-mix(in srgb, var(--accent) 60%, var(--border)); }
.btn:active { transform: translateY(1px); }
.btn-icon { padding: 8px; }

.btn-primary {
  color: #1a1206;
  border-color: transparent;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 12px 24px color-mix(in srgb, var(--accent) 38%, transparent);
}

:root[data-theme="dark"] .icon-sun,
:root[data-theme="light"] .icon-moon { display: none; }

/* livelli */
.chips { flex-wrap: wrap; gap: 6px; }

.chip {
  padding: 7px 13px;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.18s ease;
}

.chip:hover { color: var(--text); }

.chip[aria-pressed="true"] {
  color: #1a1206;
  border-color: transparent;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

/* statistiche */
.stats { margin: 0; gap: clamp(6px, 1vw, 16px); flex-wrap: wrap; }

.stat {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 56px;
  padding: 2px 0;
}

.stat dt {
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  color: var(--muted);
}

.stat dd { margin: 0; font-size: 1.02rem; font-weight: 700; line-height: 1.15; }
.stat-best dd { color: var(--accent); }

/* ---------- tavolo ---------- */
.board-wrap {
  /* min-height: 0 permette al tavolo di rimpicciolirsi invece di sfondare la pagina */
  flex: 1;
  min-height: 0;
  display: grid;
  place-items: center;
  overflow: auto;
}

.board {
  --cols: 5;
  --tile: 80px;
  display: grid;
  grid-template-columns: repeat(var(--cols), var(--tile));
  grid-auto-rows: var(--tile);
  gap: var(--gap);
  perspective: 1400px;
}

.card {
  position: relative;
  width: var(--tile);
  height: var(--tile);
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
  border-radius: clamp(6px, calc(var(--tile) * 0.14), 16px);
  animation: deal 0.4s cubic-bezier(0.2, 0.9, 0.3, 1.25) backwards;
  animation-delay: var(--delay, 0ms);
}

@keyframes deal {
  from { opacity: 0; transform: translateY(12px) scale(0.9); }
}

.card-inner {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  transition: transform 0.5s cubic-bezier(0.4, 0.05, 0.2, 1);
  border-radius: inherit;
}

.card:hover .card-inner { transform: translateY(-2px); }
.card.is-flipped .card-inner,
.card.is-flipped:hover .card-inner { transform: rotateY(180deg); }

.face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  border-radius: inherit;
  overflow: hidden;
  border: 1px solid var(--border);
}

/* dorso: superficie sobria con monogramma, così le foto risaltano una volta girate */
.front {
  background:
    repeating-linear-gradient(-45deg, color-mix(in srgb, var(--accent) 9%, transparent) 0 6px, transparent 6px 14px),
    var(--tile-face);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.09), var(--tile-shadow);
  transition: box-shadow 0.2s ease;
}

.front::after {
  content: "";
  position: absolute;
  inset: 26%;
  border-radius: 50%;
  border: 2px solid color-mix(in srgb, var(--accent) 70%, transparent);
  background: radial-gradient(circle at 32% 28%, color-mix(in srgb, var(--accent) 40%, transparent), transparent 70%);
}

.card:hover .front { box-shadow: var(--tile-shadow), 0 0 0 2px var(--ring); }

.back {
  transform: rotateY(180deg);
  background-size: cover;
  background-position: center;
  box-shadow: var(--tile-shadow);
}

.card.is-matched { cursor: default; }
.card.is-matched .card-inner { opacity: 0.62; }

.card.is-matched .back {
  outline: 2px solid var(--success);
  outline-offset: -2px;
  animation: pop 0.45s ease;
}

@keyframes pop { 40% { transform: scale(1.07); } }

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

/* ---------- finestra di vittoria ---------- */
.overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 20px;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 74%, transparent);
  backdrop-filter: blur(9px);
  animation: fade 0.25s ease;
}

.overlay[hidden] { display: none; }

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

.dialog {
  width: min(340px, 100%);
  padding: 28px 26px;
  text-align: center;
  border-radius: 22px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  animation: rise 0.35s cubic-bezier(0.2, 0.9, 0.3, 1.2);
}

@keyframes rise { from { opacity: 0; transform: translateY(16px) scale(0.96); } }

.dialog-badge { font-size: 2rem; }
.dialog h2 { margin: 6px 0 4px; font-size: 1.4rem; letter-spacing: -0.02em; }
.dialog-stats { margin: 0; font-size: 1.02rem; font-weight: 600; }
.dialog-stats .dot { color: var(--muted); margin: 0 4px; }
.dialog-note { margin: 6px 0 18px; font-size: 0.84rem; color: var(--muted); }
.dialog-note.is-record { color: var(--success); font-weight: 700; }

/* ---------- schermi stretti ---------- */
@media (max-width: 640px) {
  .brand h1 { display: none; }
  .btn span { display: none; }
  .btn { padding: 8px; }
  .stats { order: 3; width: 100%; justify-content: space-between; }
  .chips { order: 2; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}