/* ── Warren — 8×8 region-queens puzzle ─────────────────────────────────── */

/* Master palette — 8 muted, elegant hues */
:root {
  --w-c1: #e07b54; /* terracotta */
  --w-c2: #5b8dd9; /* cornflower */
  --w-c3: #eac94d; /* saffron    */
  --w-c4: #b94070; /* rose       */
  --w-c5: #4caa82; /* sage       */
  --w-c6: #8b6240; /* walnut     */
  --w-c7: #8e9bb0; /* slate      */
  --w-c8: #7c5cbf; /* lavender   */

  --w-bg: #0f1420;
  --w-surface: #1a2035;
  --w-border: rgba(255,255,255,0.08);
  --w-text: #e8eaf0;
  --w-muted: rgba(232,234,240,0.5);
  --w-accent: #7c5cbf;
  --w-cell-size: min(10vw, 52px);
}

/* ── Page shell ─────────────────────────────────────────────────────────── */
#warren-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  min-height: 100dvh;
  background: var(--w-bg);
  padding: 0 0 env(safe-area-inset-bottom);
  font-family: 'DM Sans', sans-serif;
  color: var(--w-text);
  user-select: none;
  -webkit-user-select: none;
}

/* ── Header ─────────────────────────────────────────────────────────────── */
.warren-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px 8px;
  padding-top: max(12px, env(safe-area-inset-top));
}

.warren-logo {
  height: 28px;
  filter: brightness(0) invert(1);
  opacity: 0.92;
}

.warren-header-btns {
  display: flex;
  gap: 8px;
}

.warren-icon-btn {
  background: none;
  border: none;
  color: var(--w-muted);
  font-size: 1.25rem;
  cursor: pointer;
  padding: 4px;
  line-height: 1;
  transition: color 0.15s;
}
.warren-icon-btn:hover { color: var(--w-text); }

/* ── Timer & board number ───────────────────────────────────────────────── */
.warren-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--w-muted);
  padding: 2px 0 10px;
  letter-spacing: 0.04em;
}
.warren-timer { font-variant-numeric: tabular-nums; }

/* ── Grid ───────────────────────────────────────────────────────────────── */
.warren-grid-wrap {
  position: relative;
  padding: 4px;
}

.warren-grid {
  display: grid;
  grid-template-columns: repeat(8, var(--w-cell-size));
  grid-template-rows: repeat(8, var(--w-cell-size));
  border: 2px solid rgba(255,255,255,0.12);
  border-radius: 8px;
  overflow: hidden;
  touch-action: none;
}

/* ── Cells ──────────────────────────────────────────────────────────────── */
.warren-cell {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: filter 0.1s;
}
.warren-cell:active { filter: brightness(0.85); }

/* Region colors */
.warren-cell[data-region="1"] { background: var(--w-c1); }
.warren-cell[data-region="2"] { background: var(--w-c2); }
.warren-cell[data-region="3"] { background: var(--w-c3); }
.warren-cell[data-region="4"] { background: var(--w-c4); }
.warren-cell[data-region="5"] { background: var(--w-c5); }
.warren-cell[data-region="6"] { background: var(--w-c6); }
.warren-cell[data-region="7"] { background: var(--w-c7); }
.warren-cell[data-region="8"] { background: var(--w-c8); }

/* Inner border between cells of different regions */
.warren-cell::after {
  content: '';
  position: absolute;
  inset: 0;
  box-shadow: inset 0 0 0 0.5px rgba(0,0,0,0.25);
  pointer-events: none;
}

/* Thick border between different regions — applied via JS class */
.warren-cell.border-top    { border-top:    2px solid rgba(0,0,0,0.55) !important; }
.warren-cell.border-right  { border-right:  2px solid rgba(0,0,0,0.55) !important; }
.warren-cell.border-bottom { border-bottom: 2px solid rgba(0,0,0,0.55) !important; }
.warren-cell.border-left   { border-left:   2px solid rgba(0,0,0,0.55) !important; }

/* ── Cell states ────────────────────────────────────────────────────────── */
/* X mark (impossible) */
.warren-cell.marked::before {
  content: '×';
  font-size: calc(var(--w-cell-size) * 0.45);
  font-weight: 700;
  color: rgba(0,0,0,0.55);
  line-height: 1;
}

/* Bunny */
.warren-cell.bunny::before {
  content: '';
  width: calc(var(--w-cell-size) * 0.68);
  height: calc(var(--w-cell-size) * 0.68);
  background: url('../icons/blue-bunny.svg') center/contain no-repeat;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.5));
}

/* Error flash */
.warren-cell.error {
  animation: errorFlash 0.4s ease-out;
}
@keyframes errorFlash {
  0%   { filter: brightness(1.5) saturate(2); }
  100% { filter: brightness(1); }
}

/* ── Conflict highlight ─────────────────────────────────────────────────── */
.warren-cell.conflict::before {
  color: rgba(239,68,68,0.9);
}
.warren-cell.conflict.bunny::before {
  filter: drop-shadow(0 0 4px rgba(239,68,68,0.8));
}

/* ── Win banner ─────────────────────────────────────────────────────────── */
#warren-win {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15,20,32,0.88);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  z-index: 100;
}
#warren-win.show { display: flex; animation: fadeIn 0.35s ease; }

.win-emoji { font-size: 3.5rem; }
.win-title {
  font-family: 'DM Serif Display', serif;
  font-size: 2rem;
  color: var(--w-text);
  text-align: center;
}
.win-time {
  font-size: 1.1rem;
  color: var(--w-muted);
}
.win-board-num {
  font-size: 0.85rem;
  color: var(--w-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.win-btns {
  display: flex;
  gap: 10px;
  margin-top: 8px;
  flex-wrap: wrap;
  justify-content: center;
}
.win-btn {
  padding: 10px 20px;
  border-radius: 24px;
  border: none;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s;
}
.win-btn:active { opacity: 0.8; }
.win-btn-share { background: var(--w-accent); color: #fff; }
.win-btn-next  { background: rgba(255,255,255,0.12); color: var(--w-text); }

/* ── Splash / How-to-play ───────────────────────────────────────────────── */
#warren-splash {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15,20,32,0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  z-index: 200;
  padding: 24px;
}
#warren-splash.show { display: flex; animation: fadeIn 0.3s ease; }

.splash-logo {
  height: 40px;
  filter: brightness(0) invert(1);
}

.splash-rules {
  max-width: 320px;
  width: 100%;
  background: var(--w-surface);
  border: 1px solid var(--w-border);
  border-radius: 16px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.splash-rule {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--w-text);
  line-height: 1.4;
}
.splash-rule-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
  margin-top: 1px;
}

/* Mini demo grid */
.splash-demo {
  display: grid;
  grid-template-columns: repeat(4, 28px);
  grid-template-rows: repeat(4, 28px);
  gap: 0;
  border: 2px solid rgba(255,255,255,0.15);
  border-radius: 6px;
  overflow: hidden;
  margin: 4px auto;
}
.splash-demo-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  position: relative;
}
.splash-demo-cell.bunny::before {
  content: '';
  width: 18px;
  height: 18px;
  background: url('../icons/blue-bunny.svg') center/contain no-repeat;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.4));
}
.splash-demo-cell.x::before {
  content: '×';
  font-size: 14px;
  font-weight: 700;
  color: rgba(0,0,0,0.5);
}

.splash-start-btn {
  padding: 14px 40px;
  background: var(--w-accent);
  color: #fff;
  border: none;
  border-radius: 28px;
  font-family: 'DM Sans', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: 0.02em;
  transition: opacity 0.15s;
}
.splash-start-btn:active { opacity: 0.85; }

/* ── Give Up overlay ────────────────────────────────────────────────────── */
#warren-giveup {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15,20,32,0.9);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  z-index: 100;
  padding: 24px;
}
#warren-giveup.show { display: flex; animation: fadeIn 0.3s ease; }

.giveup-title {
  font-family: 'DM Serif Display', serif;
  font-size: 1.5rem;
  color: var(--w-text);
}
.giveup-sub {
  font-size: 0.85rem;
  color: var(--w-muted);
  text-align: center;
}
.giveup-btns {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}
.giveup-btn {
  padding: 10px 22px;
  border-radius: 24px;
  border: none;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}
.giveup-btn-reveal  { background: rgba(255,255,255,0.1); color: var(--w-text); }
.giveup-btn-restart { background: var(--w-accent); color: #fff; }
.giveup-btn-cancel  { background: transparent; color: var(--w-muted); border: 1px solid var(--w-border); }

/* ── Bottom controls ────────────────────────────────────────────────────── */
.warren-controls {
  display: flex;
  gap: 12px;
  padding: 12px 0 8px;
  align-items: center;
}
.warren-ctrl-btn {
  background: var(--w-surface);
  border: 1px solid var(--w-border);
  color: var(--w-text);
  border-radius: 20px;
  padding: 8px 18px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}
.warren-ctrl-btn:hover { background: rgba(255,255,255,0.08); }
.warren-ctrl-btn.danger { border-color: rgba(239,68,68,0.3); color: rgba(239,68,68,0.85); }

/* ── Hint bar ───────────────────────────────────────────────────────────── */
.warren-hint {
  font-size: 0.75rem;
  color: var(--w-muted);
  text-align: center;
  padding-bottom: 4px;
}

/* ── Shared animation ───────────────────────────────────────────────────── */
@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.97); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes winPop {
  0%   { transform: scale(0.5); opacity: 0; }
  70%  { transform: scale(1.08); }
  100% { transform: scale(1); opacity: 1; }
}
.win-emoji { animation: winPop 0.5s cubic-bezier(0.34,1.56,0.64,1) both; }

/* ── Share toast ────────────────────────────────────────────────────────── */
#warren-toast {
  position: fixed;
  bottom: calc(24px + env(safe-area-inset-bottom));
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(8px);
  color: var(--w-text);
  padding: 10px 20px;
  border-radius: 24px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: transform 0.3s ease;
  z-index: 300;
  pointer-events: none;
  white-space: nowrap;
}
#warren-toast.show { transform: translateX(-50%) translateY(0); }