:root {
  --bg: #0b1626;
  --bg-deep: #060d18;
  --panel: #142238;
  --panel-edge: #2a4266;
  --panel-rule: #22364f;
  --text: #e9eef7;
  --muted: #9fb0c8;
  --brass: #d6b25a;
  --brass-dim: #8a7538;
  --sea: #24405f;
  --sea-light: #2c4d72;
  --sea-dark: #182f4c;
  --sea-hover: #2f5680;
  --ship: #7d8da3;
  --ship-dark: #5b6b80;
  --miss: #cbd5e1;
  --hit: #f97316;
  --hit-deep: #b43e05;
  --sunk: #dc2626;
  --sunk-deep: #6b0f0f;
  --accent: #38bdf8;
  --focus: #fde047;
  --cell: clamp(22px, 7vw, 40px);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background:
    radial-gradient(ellipse at 50% -20%, #1a2f4d 0%, transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
  color: var(--text);
  line-height: 1.4;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header: console nameplate */
.site-header {
  padding: 0.75rem 1rem;
  background: linear-gradient(180deg, #172a45 0%, #101d32 100%);
  border-bottom: 1px solid var(--panel-edge);
  box-shadow: 0 1px 0 #061020, 0 2px 12px rgba(0, 0, 0, 0.45);
}
.site-header h1 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brass);
  text-shadow: 0 1px 0 #000, 0 0 14px rgba(214, 178, 90, 0.25);
}
.site-header h1::before {
  content: "";
  display: inline-block;
  width: 0.55em; height: 0.55em;
  margin-right: 0.6em;
  border-radius: 50%;
  vertical-align: 0.05em;
  background: radial-gradient(circle at 35% 35%, #7cf2a0, #16a34a 60%, #064e2a);
  box-shadow: 0 0 6px #22c55e;
}

main { flex: 1; padding: 1rem 1rem 1rem; max-width: 1100px; width: 100%; margin: 0 auto; }

.site-footer {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.5rem;
  padding: 0.75rem 1rem; color: var(--muted); font-size: 0.85rem;
  border-top: 1px solid var(--panel-rule);
  background: #0a1424;
}
.site-footer code { color: var(--text); }

/* Buttons: instrument keys */
button {
  font: inherit;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--text);
  background: linear-gradient(180deg, #1f3455 0%, #142238 100%);
  border: 1px solid var(--panel-edge);
  border-radius: 6px;
  padding: 0.5rem 0.9rem;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), 0 1px 2px rgba(0, 0, 0, 0.5);
}
button:hover { background: linear-gradient(180deg, #27406a 0%, #1a2d4a 100%); border-color: #3a5a88; }
button:active:not(:disabled) { box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.5); }
button:disabled { cursor: default; opacity: 0.55; }
button:focus-visible, .cell:focus-visible { outline: 3px solid var(--focus); outline-offset: 1px; }
button.primary {
  background: linear-gradient(180deg, #67cdfa 0%, var(--accent) 55%, #1d9ed9 100%);
  color: #062033;
  border-color: #7dd3fc;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.35);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.45), 0 0 0 1px #0b5f86, 0 2px 6px rgba(56, 189, 248, 0.35);
}
button.primary:hover { background: linear-gradient(180deg, #8ddcfc 0%, #5cc9f7 55%, #2aa9e0 100%); }
button[aria-pressed="true"] {
  background: linear-gradient(180deg, #5ec8f7 0%, var(--accent) 100%);
  color: #062033;
  border-color: #7dd3fc;
  box-shadow: inset 0 2px 4px rgba(6, 32, 51, 0.35), 0 0 8px rgba(56, 189, 248, 0.45);
}

/* Panels: framed instrument bays */
.panel {
  position: relative;
  background: linear-gradient(180deg, #17283f 0%, var(--panel) 100%);
  border: 1px solid var(--panel-edge);
  border-radius: 10px;
  padding: 1rem;
  margin-bottom: 1rem;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.06),
    inset 0 0 0 1px rgba(0, 0, 0, 0.35),
    0 6px 18px rgba(0, 0, 0, 0.45);
}
.panel h2 {
  margin: 0 0 0.75rem;
  padding-bottom: 0.4rem;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brass);
  border-bottom: 1px solid var(--panel-rule);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.04);
}
.muted { color: var(--muted); }

/* Start screen */
.start { display: flex; flex-direction: column; max-width: 520px; margin: 1rem auto; text-align: center; }
.start .opponents { order: 3; }
.start .avatars { order: 2; }
.start .admiralty-wordmark {
  order: 1;
  margin: 0.25rem 0 1rem;
  padding: 0;
  border: 0;
  box-shadow: none;
  color: var(--brass);
  font-size: clamp(2rem, 9vw, 3.25rem);
  letter-spacing: 0.2em;
  line-height: 1;
  text-transform: uppercase;
  text-shadow: 0 1px 0 #000, 0 0 14px rgba(214, 178, 90, 0.25);
}
.start .levels { display: flex; flex-direction: column; gap: 0.5rem; margin: 1rem 0; }
.start .levels button {
  display: grid;
  grid-template-columns: 80px minmax(0, 1fr);
  gap: 0.75rem;
  align-items: center;
  text-align: left;
  padding: 0.75rem 1rem;
}
.start .levels strong { display: block; }
.start .name-row { display: flex; justify-content: space-between; align-items: center; gap: 0.5rem; }
.start .name-row .badge { flex: none; }
.badge.level-easy { background: linear-gradient(180deg, #1f6b3f 0%, #155232 100%); border-color: #3fae6e; color: #d1fae5; }
.badge.level-medium { background: linear-gradient(180deg, #8a5a12 0%, #6b4508 100%); border-color: #d99a2b; color: #fef3c7; }
.badge.level-hard { background: linear-gradient(180deg, #8b1f1f 0%, #6b1414 100%); border-color: #e05252; color: #fee2e2; }
.card-text { min-width: 0; }
.card-text small { display: block; color: var(--muted); }
.card-text .best { color: #d9c98c; margin-top: 0.2rem; }
.officer-portrait { width: 80px; height: 80px; border-radius: 8px; object-fit: cover; }
.avatar-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}
.avatar-grid button { min-width: 0; padding: 0.25rem; }
.avatar-grid img {
  display: block;
  width: 100%;
  max-width: 96px;
  height: auto;
  aspect-ratio: 1;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto;
}
.avatar-grid button[aria-pressed="true"] img { box-shadow: 0 0 0 3px var(--accent); }

/* Boards */
.boards { display: grid; gap: 1rem; grid-template-columns: 1fr; }
.board-side { display: flex; flex-direction: column; gap: 0.5rem; min-width: 0; }
.side-fleet { flex-direction: column-reverse; }
.board-wrap { display: flex; flex-direction: column; align-items: center; }
.board-wrap h2 { align-self: stretch; }
.portrait { width: 56px; height: 56px; border-radius: 50%; object-fit: cover; flex: none; }
.grid {
  display: grid;
  grid-template-columns: auto repeat(10, var(--cell));
  grid-auto-rows: var(--cell);
  gap: 2px;
  user-select: none;
  padding: 4px;
  border-radius: 8px;
  border: 2px solid #3b2f1c;
  background: linear-gradient(160deg, #0e1d31 0%, #0a1526 100%);
  box-shadow:
    inset 0 2px 8px rgba(0, 0, 0, 0.75),
    inset 0 0 0 1px rgba(214, 178, 90, 0.18),
    0 0 0 1px #1a1408,
    0 4px 10px rgba(0, 0, 0, 0.5);
}
.grid .corner, .grid .col-label, .grid .row-label {
  display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--brass);
  min-width: 1.25rem;
  text-shadow: 0 1px 0 #000;
}
.grid .corner {
  background: radial-gradient(circle at 50% 50%, var(--brass-dim) 0 22%, transparent 26%);
  border-radius: 3px;
}
.cell {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  width: var(--cell); height: var(--cell);
  padding: 0; border-radius: 4px;
  border: 1px solid #1c3050;
  background:
    radial-gradient(ellipse at 50% 50%, transparent 55%, rgba(0, 0, 0, 0.28) 100%),
    repeating-linear-gradient(
      170deg,
      rgba(255, 255, 255, 0.05) 0 2px,
      transparent 2px 6px,
      rgba(0, 0, 0, 0.08) 6px 8px,
      transparent 8px 13px
    ),
    linear-gradient(180deg, var(--sea-light) 0%, var(--sea) 50%, var(--sea-dark) 100%);
  display: flex; align-items: center; justify-content: center;
  font-size: calc(var(--cell) * 0.5);
  line-height: 1;
  cursor: pointer;
}
.cell:hover:not(:disabled) {
  background:
    radial-gradient(ellipse at 50% 50%, transparent 55%, rgba(0, 0, 0, 0.2) 100%),
    linear-gradient(180deg, #3a638f 0%, var(--sea-hover) 50%, #264b73 100%);
}
.cell:disabled { cursor: default; }
.cell[aria-disabled="true"] { cursor: default; }
.cell.ship {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.18) 0%, transparent 40%, rgba(0, 0, 0, 0.25) 100%),
    repeating-linear-gradient(90deg, transparent 0 3px, rgba(0, 0, 0, 0.12) 3px 4px),
    linear-gradient(180deg, var(--ship) 0%, var(--ship-dark) 100%);
  border-color: #4b596c;
}
.cell.miss {
  background: radial-gradient(circle at 50% 45%, #f1f5f9 0%, var(--miss) 55%, #a9b6c8 100%);
  color: #0f1a2b;
  border-color: #8fa0b8;
}
.cell.hit {
  background: radial-gradient(circle at 50% 50%, #ffd28a 0%, var(--hit) 45%, var(--hit-deep) 100%);
  color: #fff7ed;
  font-weight: 700;
  text-shadow: 0 0 2px #000, 0 0 4px #000, 0 1px 0 #000;
  border-color: #7a2c00;
  box-shadow: inset 0 0 0 1px rgba(255, 210, 138, 0.5), 0 1px 3px rgba(0, 0, 0, 0.6);
}
.cell.sunk {
  background: radial-gradient(circle at 50% 50%, #f87171 0%, var(--sunk) 45%, var(--sunk-deep) 100%);
  color: #fff;
  font-weight: 700;
  text-shadow: 0 0 2px #000, 0 1px 0 #000;
  border-color: #4a0808;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.45), 0 1px 3px rgba(0, 0, 0, 0.6);
}
.cell.ship.hit { background: radial-gradient(circle at 50% 50%, #ffd28a 0%, var(--hit) 45%, var(--hit-deep) 100%); }
.cell.ship.sunk { background: radial-gradient(circle at 50% 50%, #f87171 0%, var(--sunk) 45%, var(--sunk-deep) 100%); }
.cell.revealed {
  background: linear-gradient(180deg, var(--ship) 0%, var(--ship-dark) 100%);
  box-shadow: inset 0 0 0 2px #fde68a;
}
.cell.revealed.hit { background: radial-gradient(circle at 50% 50%, #ffd28a 0%, var(--hit) 45%, var(--hit-deep) 100%); }
.cell.preview-ok { box-shadow: inset 0 0 0 3px var(--accent); }
.cell.preview-bad { box-shadow: inset 0 0 0 3px var(--sunk); }

/* State markers (pseudo-elements sit below the glyph text via z-index: -1
   inside the cell's own stacking context). */
.cell.miss::before, .cell.miss::after,
.cell.hit::before, .cell.hit::after,
.cell.sunk::before, .cell.sunk::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  border-radius: inherit;
}
/* Miss: splash rings */
.cell.miss::before {
  inset: 12%;
  border-radius: 50%;
  border: 1px solid rgba(15, 26, 43, 0.35);
  box-shadow: inset 0 0 0 3px rgba(255, 255, 255, 0.55), 0 0 0 1px rgba(255, 255, 255, 0.6);
}
.cell.miss::after {
  inset: 32%;
  border-radius: 50%;
  border: 1px solid rgba(15, 26, 43, 0.3);
}
/* Hit: scorch burst */
.cell.hit::before {
  background:
    radial-gradient(circle at 50% 50%, rgba(0, 0, 0, 0.35) 0 10%, transparent 24%),
    conic-gradient(from 0deg,
      rgba(0, 0, 0, 0.45) 0 8%, transparent 8% 20%,
      rgba(0, 0, 0, 0.4) 20% 28%, transparent 28% 42%,
      rgba(0, 0, 0, 0.45) 42% 50%, transparent 50% 66%,
      rgba(0, 0, 0, 0.4) 66% 74%, transparent 74% 88%,
      rgba(0, 0, 0, 0.45) 88% 96%, transparent 96%);
  -webkit-mask: radial-gradient(circle, #000 0 40%, transparent 68%);
  mask: radial-gradient(circle, #000 0 40%, transparent 68%);
}
.cell.hit::after {
  inset: 22%;
  border-radius: 50%;
  box-shadow: 0 0 0 2px rgba(255, 244, 214, 0.55), 0 0 6px 2px rgba(255, 170, 60, 0.7);
}
/* Sunk: oil slick */
.cell.sunk::before {
  background:
    radial-gradient(ellipse at 30% 35%, rgba(0, 0, 0, 0.6) 0 18%, transparent 40%),
    radial-gradient(ellipse at 70% 65%, rgba(0, 0, 0, 0.55) 0 22%, transparent 45%),
    radial-gradient(ellipse at 50% 50%, rgba(0, 0, 0, 0.35) 0 35%, transparent 70%);
}
.cell.sunk::after {
  inset: 8%;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, 0.5);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12);
}

/* Targeting reticle: only on live, unknown target cells */
.target .cell:not(:disabled):not([aria-disabled="true"]):hover::before,
.target .cell:not(:disabled):not([aria-disabled="true"]):focus-visible::before,
.target .cell:not(:disabled):not([aria-disabled="true"]):hover::after,
.target .cell:not(:disabled):not([aria-disabled="true"]):focus-visible::after {
  content: "";
  position: absolute;
  pointer-events: none;
  z-index: -1;
}
.target .cell:not(:disabled):not([aria-disabled="true"]):hover::before,
.target .cell:not(:disabled):not([aria-disabled="true"]):focus-visible::before {
  inset: 18%;
  border-radius: 50%;
  border: 1.5px solid rgba(253, 224, 71, 0.9);
  box-shadow: 0 0 4px rgba(253, 224, 71, 0.6), inset 0 0 3px rgba(253, 224, 71, 0.4);
}
.target .cell:not(:disabled):not([aria-disabled="true"]):hover::after,
.target .cell:not(:disabled):not([aria-disabled="true"]):focus-visible::after {
  inset: 0;
  background:
    linear-gradient(rgba(253, 224, 71, 0.85), rgba(253, 224, 71, 0.85)) 50% 0 / 1px 100% no-repeat,
    linear-gradient(rgba(253, 224, 71, 0.85), rgba(253, 224, 71, 0.85)) 0 50% / 100% 1px no-repeat,
    radial-gradient(circle, rgba(253, 224, 71, 0.95) 0 8%, transparent 10%);
}

/* Status readout */
.status { display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem; align-items: center; }
.status .turn {
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.9rem;
  color: #a5f3fc;
  text-shadow: 0 0 8px rgba(56, 189, 248, 0.5);
}
.status .level { text-transform: capitalize; }
.status .home { padding: 0.2rem 0.75rem; font-size: 0.85rem; border-radius: 999px; }
.placement-controls .home { margin-left: auto; }
.status > span:not(.badge):not(.turn) { color: var(--muted); font-size: 0.9rem; font-variant-numeric: tabular-nums; }
.badge {
  display: inline-block; padding: 0.1rem 0.6rem; border-radius: 999px;
  background: linear-gradient(180deg, #2a3f5f 0%, #1c2e49 100%);
  border: 1px solid var(--panel-edge);
  font-size: 0.8rem; letter-spacing: 0.04em;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}
.error { color: #fca5a5; min-height: 1.4em; margin: 0.5rem 0 0; }

/* Placement */
.placement-controls { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; margin-bottom: 0.75rem; }

/* Fleet roster */
.fleet-list { list-style: none; padding: 0; margin: 0.5rem 0 0; display: flex; flex-wrap: wrap; gap: 0.5rem; }
.fleet-list li {
  position: relative;
  padding: 0.25rem 0.6rem 0.25rem 1.6rem;
  border-radius: 4px;
  background: linear-gradient(180deg, #24384f 0%, #1a2b42 100%);
  border: 1px solid var(--panel-rule);
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}
.fleet-list li::before {
  content: "";
  position: absolute;
  left: 0.5rem; top: 50%;
  width: 0.7rem; height: 0.32rem;
  transform: translateY(-50%);
  border-radius: 999px 999px 2px 2px;
  background: var(--muted);
  opacity: 0.55;
}
.fleet-list li.placed { color: var(--muted); }
.fleet-list li.placed::before { background: var(--accent); opacity: 1; box-shadow: 0 0 4px rgba(56, 189, 248, 0.6); }
.fleet-list li.placed::after {
  content: "";
  position: absolute;
  left: 1.45rem; right: 0.5rem; top: 50%;
  height: 1px;
  background: currentColor;
  opacity: 0.7;
}
.fleet-list li.current {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  color: #e0f2fe;
  background: linear-gradient(180deg, #1f4b6a 0%, #163a55 100%);
}
.fleet-list li.current::before { background: var(--focus); opacity: 1; box-shadow: 0 0 5px rgba(253, 224, 71, 0.7); }
.fleet-list li.sunk { color: #fca5a5; opacity: 0.75; }
.fleet-list li.sunk::before { background: var(--sunk); opacity: 1; transform: translateY(-50%) rotate(-18deg); }
.fleet-list li.sunk::after {
  content: "";
  position: absolute;
  left: 1.45rem; right: 0.5rem; top: 50%;
  height: 1px;
  background: currentColor;
}

/* Move log: engagement record */
.log {
  max-height: 14rem; overflow: auto; margin: 0; padding: 0; list-style: none;
  font-size: 0.9rem; font-variant-numeric: tabular-nums;
}
.log li {
  position: relative;
  padding: 0.25rem 0.5rem 0.25rem 1.5rem;
  border-bottom: 1px solid rgba(34, 54, 79, 0.7);
}
.log li:last-child { border-bottom: 0; }
.log li::before {
  content: "";
  position: absolute;
  left: 0.35rem; top: 50%;
  width: 0.55rem; height: 0.55rem;
  transform: translateY(-50%);
  border-radius: 50%;
  background: var(--miss);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.5);
}
.log li.ai, .log li[data-by="ai"] { color: var(--muted); background: rgba(0, 0, 0, 0.18); }
.log li[data-by="ai"]::before { border-radius: 1px; }
.log li[data-kind="hit"]::before { background: radial-gradient(circle, #ffd28a 0 30%, var(--hit) 100%); box-shadow: 0 0 5px rgba(249, 115, 22, 0.7); }
.log li[data-kind="sunk"]::before { background: radial-gradient(circle, #f87171 0 30%, var(--sunk) 100%); box-shadow: 0 0 5px rgba(220, 38, 38, 0.7); }
.log li[data-kind="hit"] { color: #fed7aa; }
.log li[data-kind="sunk"] { color: #fecaca; font-weight: 600; }
.log li.ai[data-kind="hit"] { color: #e2b28c; }
.log li.ai[data-kind="sunk"] { color: #e6a0a0; }

/* Game over */
.gameover { text-align: center; }
.gameover h2 { font-size: 1.6rem; }
.gameover dl { display: grid; grid-template-columns: auto auto; gap: 0.25rem 1rem; justify-content: center; text-align: left; }
.gameover dt { color: var(--muted); }
.gameover dd { margin: 0; font-variant-numeric: tabular-nums; }
.actions { display: flex; gap: 0.5rem; justify-content: center; flex-wrap: wrap; margin-top: 1rem; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}

@media (max-width: 480px) {
  main { padding: 0.5rem 0.5rem 0.5rem; }
  .panel { padding: 0.75rem 0.5rem; }
}

@media (min-width: 720px) {
  .boards { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .boards .side-target { order: 0; }
  .boards .side-fleet { order: 1; }
  .board-side .grid { --cell: clamp(18px, 2.7vw, 34px); }
}

@media (min-width: 900px) {
  .board-side { flex-direction: row; align-items: flex-start; }
  .portrait { width: 96px; height: 96px; }
}

/* 3D board tilt: decorative only, off on narrow layouts so the stacked
   mobile layout and its width math are untouched. */
@media (min-width: 481px) {
  .boards { perspective: 1400px; perspective-origin: 50% 0; }
  .boards .board-wrap {
    transform: rotateX(4deg);
    transform-origin: 50% 100%;
    transform-style: flat;
  }
  .boards .board-wrap .grid { box-shadow:
    inset 0 2px 8px rgba(0, 0, 0, 0.75),
    inset 0 0 0 1px rgba(214, 178, 90, 0.18),
    0 0 0 1px #1a1408,
    0 10px 18px rgba(0, 0, 0, 0.55);
  }
}

/* Motion: everything animated lives here. */
@media (prefers-reduced-motion: no-preference) {
  @keyframes splash-ripple {
    0%   { transform: scale(0.4); opacity: 0; }
    50%  { opacity: 1; }
    100% { transform: scale(1); opacity: 1; }
  }
  @keyframes hit-flash {
    0%   { transform: scale(1.35); filter: brightness(2.2); }
    30%  { transform: scale(0.94) translateX(-1px); filter: brightness(1.4); }
    60%  { transform: scale(1.04) translateX(1px); }
    100% { transform: scale(1); filter: brightness(1); }
  }
  @keyframes sunk-settle {
    0%   { transform: scale(1.15); opacity: 0.2; filter: saturate(1.6); }
    100% { transform: scale(1); opacity: 1; filter: saturate(1); }
  }
  .cell.miss::before, .cell.miss::after { animation: splash-ripple 320ms ease-out both; }
  .cell.miss::after { animation-delay: 60ms; }
  .cell.hit::before, .cell.hit::after { animation: hit-flash 260ms cubic-bezier(0.2, 0.9, 0.3, 1.2) both; }
  .cell.sunk::before, .cell.sunk::after { animation: sunk-settle 400ms ease-out both; }
  .boards .board-wrap { transition: transform 240ms ease; }
  button { transition: background 120ms ease, border-color 120ms ease, box-shadow 120ms ease; }
  .avatar-grid button[aria-pressed="true"] img { animation: avatar-pop 180ms ease-out; }
  @keyframes avatar-pop {
    0% { transform: scale(0.94); }
    100% { transform: scale(1); }
  }
}