/* ============================================================
   Muestra — Puzzle Mundial CSS
   Mobile-first adaptation of PlayTek's puzzle_mundial.css
   ============================================================ */

:root {
  --runner-viewport-height: 100vh;
  --puzzle-primary: #00f5e9;
  --puzzle-secondary: #081a2b;
  --puzzle-text: #f4fbff;
  --puzzle-muted: rgba(244, 251, 255, 0.72);
  --puzzle-panel-bg: rgba(8, 26, 43, 0.84);
  --puzzle-panel-border: #1b6888;
  --puzzle-accent: #00f5e9;
  --puzzle-success: #8ee05f;
  --puzzle-bg-color: #04121f;
}

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

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

html, body {
  margin: 0;
  min-height: 100%;
  font-family: Outfit, Inter, Arial, sans-serif;
  background: var(--puzzle-bg-color);
  color: var(--puzzle-text);
  -webkit-tap-highlight-color: transparent;
}

body {
  min-height: var(--runner-viewport-height);
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
}

button, input { font: inherit; }

.hidden { display: none !important; }

/* Watermark */
.runner-watermark {
  position: fixed;
  inset: 0;
  pointer-events: none;
  display: grid;
  place-items: center;
  font-size: clamp(48px, 10vw, 120px);
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(0, 245, 233, 0.18);
  z-index: 1;
}

/* Shell */
.runner-shell {
  position: relative;
  z-index: 2;
  width: 100%;
  min-height: var(--runner-viewport-height);
  display: grid;
  gap: 16px;
  align-content: start;
  padding: clamp(12px, 2.5vw, 28px);
}

/* Panel base */
.runner-panel {
  border: 1px solid color-mix(in srgb, var(--puzzle-panel-border) 88%, transparent);
  background: color-mix(in srgb, var(--puzzle-panel-bg) 100%, transparent);
  box-shadow: 0 22px 80px rgba(0, 0, 0, 0.38);
  backdrop-filter: blur(20px);
}

/* ── Start Screen ───────────────────────────────────────── */
.screen-start {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
  gap: 20px;
  padding: clamp(20px, 3vw, 32px);
  border-radius: 28px;
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.brand-logo {
  width: 80px;
  height: 54px;
  object-fit: contain;
}

.game-chip,
.meta-pill,
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.game-chip,
.meta-pill {
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  color: var(--puzzle-text);
}

.eyebrow {
  color: var(--puzzle-accent);
  margin: 0 0 8px;
}

.start-copy h1,
#completionTitle {
  margin: 0;
  font-size: clamp(32px, 6vw, 64px);
  line-height: 0.94;
}

#subtitle,
.completion-copy,
.side-copy,
.status-line {
  color: var(--puzzle-muted);
}

#subtitle {
  max-width: 40rem;
  margin: 14px 0 0;
  font-size: clamp(15px, 2vw, 18px);
  line-height: 1.6;
}

.meta-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0 0;
}

.start-actions,
.completion-actions,
.topbar-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.start-actions { margin-top: 24px; }

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  border: 0;
  border-radius: 16px;
  padding: 14px 20px;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, opacity 0.18s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 700;
  font-size: 15px;
  min-height: 48px; /* touch target */
  white-space: nowrap;
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }

.btn-primary {
  background: linear-gradient(135deg, var(--puzzle-primary), #38d0ff);
  color: #04121f;
  box-shadow: 0 12px 30px rgba(0, 245, 233, 0.24);
  font-weight: 800;
}

.btn-secondary,
.btn-ghost {
  background: rgba(255, 255, 255, 0.06);
  color: var(--puzzle-text);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-ghost { background: transparent; }

/* ── Start Visual ────────────────────────────────────────── */
.start-visual {
  min-height: clamp(220px, 36vh, 480px);
}

.hero-image,
.reference-image {
  width: 100%;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  object-fit: cover;
  background: rgba(255, 255, 255, 0.04);
}

.hero-image {
  height: 100%;
  min-height: clamp(220px, 36vh, 480px);
}

/* ── Game TopBar ─────────────────────────────────────────── */
.game-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  border-radius: 20px;
}

.topbar-info h2 {
  margin: 4px 0 0;
  font-size: clamp(18px, 2.5vw, 24px);
}

/* ── Game Layout ─────────────────────────────────────────── */
.game-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 28vw);
  gap: 16px;
}

.board-panel,
.side-panel,
.screen-complete {
  border-radius: 24px;
}

.board-panel { padding: 18px; }

.status-line {
  min-height: 20px;
  margin-bottom: 12px;
  font-size: 14px;
}

.status-line.is-success { color: var(--puzzle-success); }
.status-line.is-error { color: #ff8d8d; }

/* ── Puzzle Board ────────────────────────────────────────── */
.puzzle-board {
  --grid-size: 3;
  display: grid;
  grid-template-columns: repeat(var(--grid-size), 1fr);
  gap: clamp(6px, 1.2vw, 10px);
  width: min(100%, 680px);
  margin: 0 auto;
}

.puzzle-tile {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background-repeat: no-repeat;
  background-size: calc(var(--grid-size) * 100%) calc(var(--grid-size) * 100%);
  cursor: pointer;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.03);
  transition: transform 0.14s ease, box-shadow 0.14s ease, border-color 0.14s ease;
  min-height: 44px; /* ensure touch target */
}

.puzzle-tile:hover { transform: translateY(-1px); }
.puzzle-tile:active { transform: scale(0.96); }

.puzzle-tile::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255,255,255,0.08), transparent 40%, rgba(4,18,31,0.22));
  pointer-events: none;
}

.puzzle-tile.is-selected {
  border-color: var(--puzzle-accent);
  box-shadow: 0 0 0 2px rgba(0, 245, 233, 0.28), 0 16px 26px rgba(0, 0, 0, 0.26);
  transform: scale(1.04);
}

.puzzle-tile.is-correct {
  border-color: color-mix(in srgb, var(--puzzle-success) 80%, white 20%);
  box-shadow: 0 0 0 1px rgba(142, 224, 95, 0.22), 0 14px 24px rgba(142, 224, 95, 0.1);
}

/* ── Side Panel ──────────────────────────────────────────── */
.side-panel {
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-content: start;
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.side-block {
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 14px;
}

.side-label,
.completion-label {
  margin: 0 0 6px;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--puzzle-muted);
  display: block;
}

.side-value {
  margin: 0;
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
}

.reference-image { aspect-ratio: 1 / 1; }

/* ── Completion ──────────────────────────────────────────── */
.screen-complete {
  padding: clamp(20px, 3vw, 32px);
  text-align: center;
}

.completion-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 20px;
}

.completion-card {
  padding: 16px;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
}

.completion-card strong {
  display: block;
  font-size: clamp(22px, 3vw, 28px);
  margin-top: 6px;
}

.completion-actions {
  justify-content: center;
  margin-top: 20px;
}

/* ══════════════════════════════════════════════════════════
   RESPONSIVE — Mobile Breakpoints
   ══════════════════════════════════════════════════════════ */

/* Tablet: stack start layout */
@media (max-width: 960px) {
  .screen-start {
    grid-template-columns: 1fr;
  }

  .hero-image {
    min-height: 240px;
    max-height: 320px;
  }
}

/* Large phones / small tablets */
@media (max-width: 720px) {
  .game-layout {
    grid-template-columns: 1fr;
  }

  .side-panel {
    order: -1; /* Stats above board on mobile */
  }

  .stats-row {
    grid-template-columns: repeat(3, 1fr);
  }

  .side-block-image,
  .help-block {
    display: none; /* Hide reference image and help on small screens to save space */
  }

  .game-topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .topbar-actions {
    width: 100%;
  }

  .topbar-actions .btn {
    flex: 1;
  }
}

/* Small phones */
@media (max-width: 480px) {
  .runner-shell {
    padding: 12px;
    gap: 12px;
  }

  .screen-start {
    padding: 16px;
    border-radius: 20px;
  }

  .start-copy h1 {
    font-size: clamp(28px, 9vw, 42px);
  }

  .btn {
    padding: 13px 18px;
    font-size: 15px;
  }

  .start-actions {
    flex-direction: column;
  }

  .start-actions .btn {
    width: 100%;
  }

  .meta-pills {
    gap: 8px;
  }

  .puzzle-board {
    gap: 5px;
  }

  .puzzle-tile {
    border-radius: 10px;
  }

  .completion-stats {
    grid-template-columns: 1fr;
  }

  .completion-actions {
    flex-direction: column;
  }

  .completion-actions .btn {
    width: 100%;
  }
}

/* Very small / older phones */
@media (max-width: 360px) {
  .stats-row {
    grid-template-columns: 1fr 1fr;
  }

  .stats-row .side-block:last-child {
    display: none;
  }
}

/* Landscape mobile: keep board visible */
@media (max-height: 500px) and (orientation: landscape) {
  .runner-shell {
    min-height: auto;
  }

  .screen-start {
    grid-template-columns: 1fr 1fr;
  }

  .start-visual {
    min-height: 180px;
  }

  .hero-image {
    min-height: 180px;
  }
}