/* =============================================================================
   PLAY PAGE — board, pieces, controls, explosion effects
   ============================================================================= */

.play-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 30px; align-items: start; }

/* Setup + variant selectors */
.setup-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 16px; align-items: center; }
.variant-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 26px; align-items: center; }
.variant-label { flex-basis: 100%; font-size: 0.85rem; color: var(--muted); margin-bottom: 2px; }
/* castle destination marker (orange, to distinguish from normal move dots) */
.sq.castle-target::before { background: rgba(255,122,26,0.65) !important; box-shadow: 0 0 9px rgba(255,122,26,0.55) !important; }
.variant-chip {
  position: relative; font-family: var(--font-display); font-weight: 600; font-size: 0.9rem;
  color: var(--muted); background: var(--surface); border: 1px solid var(--border);
  padding: 10px 18px; border-radius: 999px; cursor: pointer; transition: .15s; white-space: nowrap;
}
.variant-chip:hover { border-color: var(--border-2); color: var(--text); }
.variant-chip.active { color: #1a0d00; background: linear-gradient(135deg, var(--orange), var(--amber)); border-color: transparent; }
.variant-chip[data-soon]::after {
  content: "Soon"; font-size: 0.6rem; letter-spacing: 1px; text-transform: uppercase;
  margin-left: 8px; color: var(--amber-ink); border: 1px solid rgba(255,194,75,0.3);
  padding: 2px 6px; border-radius: 999px; vertical-align: middle;
}
.variant-chip[data-soon] { cursor: not-allowed; opacity: 0.75; }

/* "New Game" nudges you when the chip selection differs from the running game */
#btnNew.pending { animation: btn-pulse 1.6s ease-in-out infinite; }
@keyframes btn-pulse { 0%,100% { box-shadow: 0 0 0 0 rgba(255,122,26,0.5); } 50% { box-shadow: 0 0 0 6px rgba(255,122,26,0); } }

/* Board */
.board-wrap { display: flex; gap: 10px; align-items: stretch; }
.board-inner { position: relative; flex: 1 1 auto; min-width: 0; }

/* Live engine eval bar */
.evalbar { display: none; flex-direction: column; align-items: center; gap: 6px; width: 30px; flex: none; }
.evalbar.on { display: flex; }
.evalnum { font-family: var(--font-display); font-weight: 700; font-size: 0.72rem; color: var(--muted); min-height: 14px; }
.evaltrack { flex: 1; width: 15px; border-radius: 8px; overflow: hidden; position: relative; background: #2c313d; border: 1px solid var(--border-2); box-shadow: inset 0 0 6px rgba(0,0,0,0.4); }
.evalfill { position: absolute; left: 0; right: 0; bottom: 0; height: 50%; background: linear-gradient(#ffffff, #e6e6f0); transition: height .35s ease; }
.board {
  display: grid; grid-template-columns: repeat(8, 1fr); grid-template-rows: repeat(8, 1fr);
  width: 100%; max-width: 560px; aspect-ratio: 1; margin: 0 auto;
  border-radius: 10px; overflow: hidden; border: 7px solid var(--board-frame);
  box-shadow: var(--shadow), inset 0 0 0 1px rgba(0,0,0,0.35), 0 0 0 1px rgba(255,255,255,0.04);
  user-select: none; touch-action: none;
}
.sq { position: relative; display: grid; place-items: center; cursor: pointer; }
.sq .piece { cursor: grab; }

/* Coordinate labels */
.coord { position: absolute; font-family: var(--font-display); font-weight: 600; font-size: clamp(8px, 1.6vw, 11px); pointer-events: none; z-index: 3; opacity: 0.85; }
.coord.file { right: 3px; bottom: 1px; }
.coord.rank { left: 3px; top: 1px; }
.coord { color: rgba(236,236,246,0.5); }
:root[data-theme="light"] .sq.light .coord { color: rgba(90,70,50,0.7); }
:root[data-theme="light"] .sq.dark .coord  { color: rgba(245,238,225,0.85); }

/* Floating piece while dragging */
.drag-ghost {
  position: fixed; z-index: 1000; pointer-events: none;
  transform: translate(-50%, -55%); line-height: 1; font-size: 46px;
  filter: drop-shadow(0 6px 10px rgba(0,0,0,0.6));
}
.drag-ghost.w { color: #f6f6fb; text-shadow: 0 1px 2px rgba(0,0,0,0.9), 0 0 1px #000; }
.drag-ghost.b { color: #0c0c12; text-shadow: 0 1px 1px rgba(255,255,255,0.4); }
.sq.light { background: var(--board-light); }
.sq.dark  { background: var(--board-dark); }
/* Highlights */
.sq.movable { box-shadow: inset 0 0 0 2px rgba(255,194,75,0.22); }
.sq.selected::after, .sq.lastmove::after, .sq.incheck::after { content: ""; position: absolute; inset: 0; pointer-events: none; z-index: 1; }
.sq.lastmove::after { background: rgba(255,194,75,0.22); }
.sq.selected::after { background: rgba(255,122,26,0.16); box-shadow: inset 0 0 0 3px var(--orange); }
.sq.incheck::after { background: radial-gradient(circle at center, rgba(255,59,48,0.72), rgba(255,59,48,0.18) 58%, transparent 72%); }

.sq.target::before {
  content: ""; width: 30%; height: 30%; border-radius: 50%; z-index: 2;
  background: rgba(143,227,42,0.6); box-shadow: 0 0 8px rgba(143,227,42,0.5); pointer-events: none;
}
.sq.target-cap::before {
  content: ""; position: absolute; inset: 7%; border-radius: 50%; z-index: 2;
  border: 4px solid rgba(255,59,48,0.78); box-shadow: 0 0 9px rgba(255,59,48,0.45); pointer-events: none;
}
/* Duck placement targets (duck chess) — golden dots on every empty square */
.sq.duck-target { cursor: pointer; }
.sq.duck-target::before {
  content: ""; width: 26%; height: 26%; border-radius: 50%; z-index: 2;
  background: rgba(255,199,0,0.55); box-shadow: 0 0 8px rgba(255,199,0,0.55); pointer-events: none;
}
.sq.duck-target:hover { box-shadow: inset 0 0 0 3px rgba(255,199,0,0.7); }

/* Pieces — solid fill with a contrasting outline (via directional shadow) + depth */
.piece {
  font-size: clamp(31px, 8.8vw, 54px); line-height: 1; pointer-events: none; position: relative; z-index: 2;
  transition: transform .12s ease;
}
.piece.w {
  color: #f6f7fb;
  text-shadow: -1.2px -1.2px 0 #14141c, 1.2px -1.2px 0 #14141c, -1.2px 1.2px 0 #14141c, 1.2px 1.2px 0 #14141c,
    0 1.2px 0 #14141c, 0 3px 4px rgba(0,0,0,0.55);
}
.piece.b {
  color: #17181f;
  text-shadow: -1.2px -1.2px 0 #eef0f8, 1.2px -1.2px 0 #eef0f8, -1.2px 1.2px 0 #eef0f8, 1.2px 1.2px 0 #eef0f8,
    0 1.2px 0 #cfd2e0, 0 3px 4px rgba(0,0,0,0.45);
}
.sq.selected .piece { transform: translateY(-2px) scale(1.05); }
/* The duck — an emoji, so no text outline; give it a little lift + shadow */
.piece.duck {
  font-size: clamp(28px, 8vw, 48px); z-index: 3;
  filter: drop-shadow(0 2px 3px rgba(0,0,0,0.5));
  animation: duck-drop .18s ease-out;
}
@keyframes duck-drop { from { transform: translateY(-22%) scale(1.15); } to { transform: none; } }

/* Explosion effect */
.boom {
  position: absolute; inset: -20%; border-radius: 50%; pointer-events: none; z-index: 5;
  background: radial-gradient(circle, #fff 0%, var(--amber) 25%, var(--orange) 45%, var(--red) 65%, transparent 75%);
  animation: boom .5s ease-out forwards;
}
@keyframes boom {
  0%   { transform: scale(0.2); opacity: 1; }
  60%  { transform: scale(1.15); opacity: 0.95; }
  100% { transform: scale(1.5); opacity: 0; }
}

/* Promotion overlay */
.promo {
  position: absolute; inset: 0; display: none; place-items: center; z-index: 10;
  background: rgba(8,8,13,0.82); backdrop-filter: blur(3px); border-radius: 12px;
}
.promo.show { display: grid; }
.promo { grid-auto-flow: column; gap: 10px; }
.promo-btn {
  width: 64px; height: 64px; font-size: 40px; line-height: 1; border-radius: 12px; cursor: pointer;
  background: var(--surface-2); border: 1px solid var(--border-2); transition: .15s;
}
.promo-btn.w { color: #f6f6fb; }
.promo-btn.b { color: #0c0c12; background: #cfcfe0; }
.promo-btn:hover { border-color: var(--orange); transform: translateY(-2px); }

/* Side panel */
.play-panel { display: flex; flex-direction: column; gap: 18px; }
.play-card { background: linear-gradient(180deg, var(--surface), var(--bg-2)); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.play-card h3 { font-size: 0.8rem; letter-spacing: 2px; text-transform: uppercase; color: var(--faint); margin-bottom: 14px; }

.game-status {
  font-family: var(--font-display); font-size: 1.05rem; font-weight: 600; padding: 14px 16px;
  border-radius: var(--radius-sm); background: var(--surface-2); border: 1px solid var(--border); min-height: 52px; display: flex; align-items: center;
}
.game-status.warn { color: var(--amber-ink); border-color: rgba(255,194,75,0.3); }
.game-status.win  { color: var(--green-ink); border-color: rgba(143,227,42,0.4); background: rgba(143,227,42,0.08); }
.game-status.lose { color: #ff8f85; border-color: rgba(255,59,48,0.35); }
.game-status.muted { color: var(--muted); }

.opt-row { display: flex; gap: 8px; }
.opt-row .opt {
  flex: 1; text-align: center; font-family: var(--font-display); font-weight: 600; font-size: 0.85rem;
  color: var(--muted); background: var(--surface-2); border: 1px solid var(--border); padding: 9px 6px;
  border-radius: 999px; cursor: pointer; transition: .15s;
}
.opt-row .opt:hover { color: var(--text); border-color: var(--border-2); }
.opt-row .opt.active { color: #1a0d00; background: linear-gradient(135deg, var(--orange), var(--amber)); border-color: transparent; }
.opt-label { font-size: 0.72rem; letter-spacing: 1.5px; text-transform: uppercase; color: var(--faint); margin: 4px 0 8px; font-family: var(--font-display); }

.play-actions { display: flex; flex-direction: column; gap: 10px; }
.play-actions .btn { justify-content: center; width: 100%; }
.game-actions { display: flex; gap: 10px; margin-top: 10px; }
.game-actions .btn { flex: 1; justify-content: center; }
.btn-resign:not(:disabled):hover { border-color: var(--red); color: #ff8f85; }

/* Time-control picker */
.tc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.tc-opt { padding: 8px 4px; font-size: 0.8rem; }
/* Clearly show which time control is selected (the .opt-row active rule doesn't reach here) */
.tc-opt.active {
  color: #1a0d00; font-weight: 700; border-color: transparent;
  background: linear-gradient(135deg, var(--orange), var(--amber));
  box-shadow: 0 0 0 2px rgba(255,122,26,0.4), 0 4px 14px rgba(255,122,26,0.3);
}
.tc-opt.active:hover { color: #1a0d00; }

/* Clocks */
.clock-card { display: flex; flex-direction: column; gap: 10px; padding: 14px; }
.clock {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; border-radius: var(--radius-sm);
  background: var(--surface-2); border: 1px solid var(--border); transition: .15s;
}
.clock-label { font-family: var(--font-display); font-size: 0.72rem; letter-spacing: 1.5px; text-transform: uppercase; color: var(--faint); }
.clock-time { font-family: var(--font-display); font-weight: 700; font-size: 1.7rem; color: var(--text); font-variant-numeric: tabular-nums; letter-spacing: 1px; }
.clock.active { border-color: var(--orange); background: rgba(255,122,26,0.10); box-shadow: inset 0 0 0 1px rgba(255,122,26,0.35); }
.clock.active .clock-time { color: var(--orange-2); }
.clock.low .clock-time { color: #ff8f85; }
.clock.flagged { opacity: 0.6; }
.clock.flagged .clock-time { color: var(--red); }

/* Post-game review controls */
.review-nav { display: flex; align-items: center; justify-content: center; gap: 8px; }
.rev-btn {
  font-size: 1rem; width: 42px; height: 38px; border-radius: 10px; cursor: pointer;
  background: var(--surface-2); border: 1px solid var(--border-2); color: var(--text);
  transition: color .15s, border-color .15s;
}
.rev-btn:hover:not(:disabled) { border-color: var(--orange); color: var(--orange-2); }
.rev-btn:disabled { opacity: 0.35; cursor: default; }
.rev-counter { font-family: var(--font-display); font-weight: 600; font-size: 0.9rem; color: var(--muted); min-width: 56px; text-align: center; }

/* How to play — full-width reference block */
.rules-block { border-top: 1px solid var(--border); padding-top: 54px; }
.rules-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.rules-col {
  background: linear-gradient(180deg, var(--surface), var(--bg-2));
  border: 1px solid var(--border); border-radius: var(--radius); padding: 24px 26px;
}
.rules-col h3 {
  font-family: var(--font-display); font-size: 1.05rem; color: var(--text);
  margin: 0 0 16px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}
.rules-tag {
  font-size: 0.62rem; letter-spacing: 1px; text-transform: uppercase; font-weight: 600;
  color: var(--orange-2); background: rgba(255,122,26,0.12); border: 1px solid rgba(255,122,26,0.28);
  padding: 3px 9px; border-radius: 999px;
}
.rules-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.rules-list li {
  color: var(--muted); font-size: 0.92rem; line-height: 1.5;
  position: relative; padding-left: 20px;
}
.rules-list li::before {
  content: ""; position: absolute; left: 0; top: 0.55em;
  width: 7px; height: 7px; border-radius: 2px; transform: rotate(45deg);
  background: linear-gradient(135deg, var(--orange), var(--amber));
}
.rules-list li strong { color: var(--text); font-weight: 600; }
.rules-list li em { color: var(--orange-2); font-style: italic; }

@media (max-width: 980px) { .rules-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 860px) {
  .play-layout { grid-template-columns: 1fr; }
  .play-panel { order: 2; }
}
@media (max-width: 620px) { .rules-grid { grid-template-columns: 1fr; } }

/* ---- Play Online (Phase 1: login) ---------------------------------------- */
.beta-tag {
  font-size: 0.58rem; letter-spacing: 1px; text-transform: uppercase; font-weight: 700;
  color: var(--amber-ink); background: rgba(255,194,75,0.14); border: 1px solid rgba(255,194,75,0.35);
  padding: 2px 7px; border-radius: 999px; vertical-align: middle; margin-left: 6px;
}
.online-root { display: flex; justify-content: center; }
.online-card {
  background: linear-gradient(180deg, var(--surface), var(--bg-2));
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 40px 36px; max-width: 520px; width: 100%; text-align: center;
}
.online-icon { font-size: 2.6rem; line-height: 1; margin-bottom: 8px; }
.online-card h2 { font-size: 1.5rem; margin: 0 0 10px; }
.online-card p { color: var(--muted); margin: 0 auto 18px; max-width: 42ch; }
.online-user { color: var(--orange-2); }
.online-signin { min-width: 240px; }
.online-error { color: #ff8f85; font-size: 0.9rem; }
.online-note { color: var(--faint); margin-top: 16px; }
.online-soon {
  display: inline-block; font-family: var(--font-display); font-weight: 600; font-size: 0.85rem;
  color: var(--amber-ink); background: var(--surface-2); border: 1px dashed rgba(255,194,75,0.4);
  padding: 10px 18px; border-radius: 999px; margin-bottom: 20px;
}