*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
[hidden] { display: none !important; }

:root {
  --bg: #f5f0e8;
  --bg-warm: #ede7db;
  --surface: #fffdf8;
  --ink: #2c2826;
  --ink-light: #8a8279;
  --ink-muted: #b8b0a4;
  --line: #ddd5c8;
  --accent: #2a7f9e;
  --accent-hover: #216a85;
  --accent-ink: #fff;
  --water: #e3edf0;
  --water-deep: #cfe0e6;
  --water-known: #edf2f2;
  --ship: #5d6b78;
  --ship-edge: #44505c;
  --hit: #c45d3e;
  --sunk: #3a3532;
  --ok: #3f9a6b;
  --bad: #c45d3e;
  --radius: 6px;
  --board: min(calc(100vw - 2.5rem), 440px);
  color-scheme: light;
}

html.dark {
  --bg: #1a1714;
  --bg-warm: #222019;
  --surface: #23201c;
  --ink: #e8e2d8;
  --ink-light: #8a8279;
  --ink-muted: #5a544e;
  --line: #38332d;
  --accent: #3f9fc0;
  --accent-hover: #4fb0d1;
  --accent-ink: #0d1a20;
  --water: #1d2a30;
  --water-deep: #22343b;
  --water-known: #1c2226;
  --ship: #7d8a96;
  --ship-edge: #95a2ae;
  --hit: #e0704f;
  --sunk: #0f0d0b;
  --ok: #4fb683;
  --bad: #e0704f;
  color-scheme: dark;
}

html { background: var(--bg); }

body {
  font-family: 'DM Mono', ui-monospace, Menlo, Consolas, monospace;
  background: var(--bg);
  color: var(--ink);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: env(safe-area-inset-top, 0) max(1rem, env(safe-area-inset-right, 0)) env(safe-area-inset-bottom, 0) max(1rem, env(safe-area-inset-left, 0));
  -webkit-tap-highlight-color: transparent;
  overflow-x: hidden;
}

button, input { font: inherit; color: inherit; }

button {
  padding: 0.5rem 0.95rem;
  border: 1.5px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  cursor: pointer;
  font-size: 0.85rem;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
button:hover:not(:disabled) { border-color: var(--accent); }
button:disabled { opacity: 0.6; cursor: default; }
button:focus-visible, input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn-accent { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 500; }
.btn-accent:hover:not(:disabled) { background: var(--accent-hover); border-color: var(--accent-hover); }
.wide { width: 100%; }
button.small { padding: 0.25rem 0.6rem; font-size: 0.75rem; }

input {
  padding: 0.5rem 0.7rem;
  border: 1.5px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  font-size: 0.9rem;
  min-width: 0;
}

/* ── Top bar ── */
.top-bar {
  width: 100%;
  max-width: 960px;
  padding: 0.85rem 0 0.4rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.title { border: 0; background: none; padding: 0; }
.title:hover:not(:disabled) { border: 0; }
h1 {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 700;
  font-size: 1.45rem;
  letter-spacing: -0.02em;
}
h1 span { color: var(--accent); }
.top-actions { display: flex; align-items: center; gap: 0.75rem; }
.badge { font-size: 0.72rem; color: var(--ink-light); }
.icon-btn { border: 0; background: none; padding: 0.2rem; font-size: 1.05rem; line-height: 1; color: var(--ink-light); }

main { width: 100%; max-width: 960px; flex: 1; }

/* ── Menu ── */
.menu { max-width: 440px; margin: 0 auto; padding-block: 1rem 2rem; display: flex; flex-direction: column; gap: 1rem; }
.tagline { font-family: 'Fraunces', Georgia, serif; font-size: 1.25rem; line-height: 1.3; color: var(--ink); }
.resume { display: flex; flex-direction: column; gap: 0.5rem; }
.resume:empty { display: none; }
.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.panel h2 { font-family: 'Fraunces', Georgia, serif; font-size: 1.15rem; display: flex; align-items: center; gap: 0.6rem; }
.live { display: inline-flex; align-items: center; gap: 0.35rem; font-family: 'DM Mono', monospace; font-size: 0.7rem; font-weight: 400; color: var(--ink-light); }
.live i { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); }
.row { display: flex; gap: 0.5rem; }
.row > * { flex: 1; }
.seg { display: flex; border: 1.5px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.seg button { flex: 1; border: 0; border-radius: 0; background: transparent; }
.seg button + button { border-left: 1.5px solid var(--line); }
.seg button.active { background: var(--accent); color: var(--accent-ink); }
.check { display: flex; align-items: center; gap: 0.5rem; font-size: 0.85rem; cursor: pointer; }
.check input { accent-color: var(--accent); width: 1rem; height: 1rem; }
.record, .hint { font-size: 0.75rem; color: var(--ink-light); }
.hint.center { text-align: center; margin-top: 0.6rem; }
.err { font-size: 0.8rem; color: var(--bad); }
.rules { font-size: 0.82rem; color: var(--ink-light); line-height: 1.55; }
.rules summary { cursor: pointer; color: var(--ink); }
.rules p { margin-top: 0.6rem; }
kbd { font-family: inherit; font-size: 0.75rem; padding: 0 0.3rem; border: 1px solid var(--line); border-radius: 4px; }

/* ── Game ── */
.game { padding-block: 0.5rem 2rem; }

.room-bar {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.4rem 0.9rem;
  font-size: 0.8rem;
  color: var(--ink-light);
  margin-bottom: 0.6rem;
}
.room-bar b { color: var(--ink); font-weight: 500; letter-spacing: 0.12em; font-size: 0.95rem; }
.opp-status::before { content: ''; display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--ink-muted); margin-right: 0.35rem; }
.opp-status.on::before { background: var(--ok); }

.status {
  min-height: 3.1rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.15rem;
  margin-bottom: 0.75rem;
}
.status .event { font-size: 0.8rem; color: var(--ink-light); min-height: 1.1em; }
.status .turn { font-family: 'Fraunces', Georgia, serif; font-size: 1.1rem; }
.status.alert .turn { color: var(--accent); }

.boards {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 2rem;
  flex-wrap: wrap;
}
.side { display: flex; flex-direction: column; align-items: center; gap: 0.6rem; }
.side h3 { font-family: 'Fraunces', Georgia, serif; font-size: 1rem; font-weight: 700; align-self: flex-start; padding-left: 1.4rem; }
.side.enemy h3 { color: var(--accent); }

.board-wrap {
  display: grid;
  grid-template-columns: 1.4rem 1fr;
  grid-template-rows: 1.2rem 1fr;
  width: var(--board);
}
.labels { display: grid; font-size: 0.65rem; color: var(--ink-light); }
.labels span { display: grid; place-items: center; }
.labels.cols { grid-template-columns: repeat(10, 1fr); grid-column: 2; grid-row: 1; }
.labels.rows { grid-template-rows: repeat(10, 1fr); grid-column: 1; grid-row: 2; }

.board {
  grid-column: 2;
  grid-row: 2;
  aspect-ratio: 1;
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  grid-template-rows: repeat(10, 1fr);
  gap: 2px;
  padding: 2px;
  background: var(--water-deep);
  border-radius: 8px;
  user-select: none;
  -webkit-user-select: none;
}

.cell {
  position: relative;
  border: 0;
  padding: 0;
  border-radius: 3px;
  background: var(--water);
  min-width: 0;
  font-size: 0;
  transition: none;
}
button.cell { cursor: default; }
button.cell:hover:not(:disabled) { border: 0; }
.cell::after { content: ''; position: absolute; inset: 0; margin: auto; pointer-events: none; }

/* Ships: one rounded hull across cells */
.cell.ship { background: var(--ship); border-radius: 0; }
.cell.ship.h { margin: 14% -1px; }
.cell.ship.v { margin: -1px 14%; }
.cell.ship.h.bow { border-radius: 999px 0 0 999px; margin-left: 8%; }
.cell.ship.h.stern { border-radius: 0 999px 999px 0; margin-right: 8%; }
.cell.ship.v.bow { border-radius: 999px 999px 0 0; margin-top: 8%; }
.cell.ship.v.stern { border-radius: 0 0 999px 999px; margin-bottom: 8%; }
.cell.ship.bow.stern { border-radius: 999px; }
.cell.ship.sunk { background: var(--sunk); }
.cell.ship.revealed { background: transparent; box-shadow: inset 0 0 0 2px var(--ship); }
.cell.ship.lifted { opacity: 0.25; }
body[data-phase="place"] .mine .board { touch-action: none; }
body[data-phase="place"] .mine .cell.ship { cursor: grab; }

/* Ghost while dragging */
.cell.ghost { border-radius: 0; z-index: 1; }
.cell.ghost.ok { background: color-mix(in srgb, var(--ok) 55%, transparent); }
.cell.ghost.bad { background: color-mix(in srgb, var(--bad) 55%, transparent); }
.cell.ghost.h.bow { border-radius: 999px 0 0 999px; }
.cell.ghost.h.stern { border-radius: 0 999px 999px 0; }
.cell.ghost.v.bow { border-radius: 999px 999px 0 0; }
.cell.ghost.v.stern { border-radius: 0 0 999px 999px; }

/* Shots */
.cell.miss::after { width: 26%; height: 26%; border-radius: 50%; background: var(--ink-light); }
.cell.water { background: var(--water-known); }
.cell.water::after { width: 14%; height: 14%; border-radius: 50%; background: var(--ink-muted); }
.cell.hit::after {
  width: 62%;
  height: 62%;
  background:
    linear-gradient(45deg, transparent 42%, var(--hit) 42% 58%, transparent 58%),
    linear-gradient(-45deg, transparent 42%, var(--hit) 42% 58%, transparent 58%);
}
.cell.hit:not(.ship) { background: color-mix(in srgb, var(--hit) 22%, var(--water)); }
.cell.ship.hit::after {
  background:
    linear-gradient(45deg, transparent 40%, #fff 40% 60%, transparent 60%),
    linear-gradient(-45deg, transparent 40%, #fff 40% 60%, transparent 60%);
  opacity: 0.9;
}
.cell.ship.hit:not(.sunk) { background: var(--hit); }

/* Targeting */
body.my-turn .enemy .board { box-shadow: 0 0 0 2px var(--accent); }
.cell.target { cursor: crosshair !important; }
.cell.target:hover { background: color-mix(in srgb, var(--accent) 35%, var(--water)); }
.cell:focus-visible { outline: 2px solid var(--accent); outline-offset: 0; z-index: 2; }

/* Latest shot */
.cell.last.miss::before, .cell.last.hit::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid var(--accent);
  animation: ripple 0.7s ease-out forwards;
  pointer-events: none;
}
.cell.last.hit::before { border-color: var(--hit); }
.cell.last.hit::after { animation: boom 0.35s ease-out; }
@keyframes ripple { from { transform: scale(0.2); opacity: 1; } to { transform: scale(1.6); opacity: 0; } }
@keyframes boom { 0% { transform: scale(0.2); } 60% { transform: scale(1.25); } 100% { transform: scale(1); } }

.board.shake { animation: shake 0.3s; }
@keyframes shake { 25% { transform: translateX(-4px); } 75% { transform: translateX(4px); } }

/* Fleet trackers */
.tracker {
  list-style: none;
  width: var(--board);
  padding-left: 1.4rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(8.5rem, 1fr));
  gap: 0.25rem 0.9rem;
  font-size: 0.72rem;
}
.tracker li { display: flex; justify-content: space-between; align-items: center; gap: 0.5rem; }
.tracker b { display: flex; gap: 2px; }
.tracker i { width: 9px; height: 9px; border-radius: 2px; background: var(--ship); }
.tracker i.h { background: var(--hit); }
.tracker li.sunk { color: var(--ink-muted); text-decoration: line-through; }
.tracker li.sunk i { background: var(--ink-muted); }

.actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 0.6rem; margin-top: 1.1rem; }
.actions:empty { display: none; }

/* Your fleet shrinks during battle on small screens so enemy waters stay big */
@media (max-width: 760px) {
  body:is([data-phase="battle"], [data-phase="over"]) .boards { gap: 1.2rem; }
  body:is([data-phase="battle"], [data-phase="over"]) .mine { --board: min(calc(100vw - 2.5rem), 250px); }
  body:is([data-phase="battle"], [data-phase="over"]) .mine .labels { font-size: 0.55rem; }
}

/* ── Modal ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: rgba(20, 16, 12, 0.45);
  animation: fade 0.25s ease;
}
.modal-box {
  width: min(340px, 100%);
  background: var(--surface);
  border-radius: 14px;
  padding: 1.6rem 1.4rem 1.3rem;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  animation: rise 0.3s ease;
}
.modal-title { font-family: 'Fraunces', Georgia, serif; font-weight: 700; font-size: 1.8rem; }
.modal-title.won { color: var(--accent); }
.modal-title.lost { color: var(--hit); }
.modal-sub { font-size: 0.8rem; color: var(--ink-light); margin-top: 0.5rem; line-height: 1.6; }
.modal-actions { display: flex; gap: 0.6rem; justify-content: center; margin-top: 1.2rem; }
@keyframes fade { from { opacity: 0; } }
@keyframes rise { from { transform: translateY(12px); opacity: 0; } }

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(1.2rem + env(safe-area-inset-bottom, 0px));
  transform: translateX(-50%);
  max-width: calc(100vw - 2rem);
  padding: 0.55rem 1rem;
  border-radius: 999px;
  background: var(--ink);
  color: var(--bg);
  font-size: 0.8rem;
  z-index: 30;
  overflow-wrap: anywhere;
}

#confetti { position: fixed; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 40; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}