@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@500;600;700&family=Inter:wght@400;500;600;700&display=swap');

:root {
  color-scheme: dark;
  --ink: #e9f6f7;
  --muted: #7f9da4;
  --teal: #35d4c7;
  --teal-bright: #70f1e4;
  --navy: #071923;
  --panel: rgba(9, 33, 43, .82);
  --line: rgba(119, 191, 194, .18);
  --cell: rgba(13, 48, 59, .88);
  --cell-hover: rgba(32, 96, 102, .84);
  --hit: #ff6a57;
  --miss: #86a7ad;
  --ship: #268f8a;
  font-family: Inter, system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { min-height: 100%; background: var(--navy); }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    linear-gradient(rgba(84, 177, 175, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(84, 177, 175, .035) 1px, transparent 1px),
    radial-gradient(circle at 50% -10%, #123945 0, #071923 48%, #041017 100%);
  background-size: 48px 48px, 48px 48px, auto;
  overflow-x: hidden;
}
button { font: inherit; }
button:focus-visible { outline: 2px solid var(--teal-bright); outline-offset: 3px; }
[hidden] { display: none !important; }

.ocean-glow { position: fixed; border-radius: 50%; filter: blur(90px); pointer-events: none; opacity: .13; }
.ocean-glow-a { width: 34rem; height: 34rem; left: -18rem; top: 20%; background: #25e7d8; }
.ocean-glow-b { width: 28rem; height: 28rem; right: -16rem; bottom: -7rem; background: #227fa7; }

.shell { width: min(1240px, calc(100% - 40px)); margin: 0 auto; padding: 25px 0 48px; position: relative; }
.masthead { height: 66px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.brand { color: var(--ink); text-decoration: none; display: flex; align-items: center; gap: 13px; font-family: 'Barlow Condensed', sans-serif; font-size: 24px; font-weight: 700; letter-spacing: .12em; line-height: .8; }
.brand small, .panel-heading small, .command-bar small, .fleet-title small, .result-dialog small { display: block; color: var(--teal); font-size: 9px; letter-spacing: .25em; font-weight: 700; margin-bottom: 7px; }
.brand-mark { width: 34px; height: 30px; display: flex; align-items: end; gap: 3px; border-bottom: 2px solid var(--teal); }
.brand-mark i { display: block; width: 8px; background: var(--teal); clip-path: polygon(50% 0, 100% 35%, 100% 100%, 0 100%, 0 35%); }
.brand-mark i:nth-child(1) { height: 13px; }.brand-mark i:nth-child(2) { height: 25px; }.brand-mark i:nth-child(3) { height: 18px; }
.scoreboard { display: flex; align-items: center; gap: 18px; text-align: center; }
.scoreboard span:not(.score-rule) { min-width: 45px; }.scoreboard small { display: block; color: var(--muted); font-size: 8px; letter-spacing: .18em; }.scoreboard b { font-family: 'Barlow Condensed'; font-size: 20px; }
.score-rule { width: 1px; height: 28px; background: var(--line); }

.command-bar { margin: 25px 0 22px; min-height: 62px; display: flex; align-items: center; gap: 14px; padding: 12px 14px 12px 18px; border: 1px solid var(--line); border-left: 3px solid var(--teal); background: linear-gradient(90deg, rgba(34, 111, 109, .17), rgba(8, 30, 39, .7)); box-shadow: 0 14px 40px rgba(0,0,0,.14); }
.command-bar p { margin: 0; color: #c5d9dc; font-size: 13px; }.command-bar small { margin-bottom: 4px; }.status-light { width: 7px; height: 7px; background: var(--teal); border-radius: 50%; box-shadow: 0 0 14px var(--teal); }.icon-button { margin-left: auto; width: 38px; height: 38px; border: 1px solid var(--line); background: transparent; color: var(--muted); cursor: pointer; }.icon-button svg { width: 17px; fill: currentColor; }.icon-button.muted { color: #49636a; }

.placement-layout { display: grid; grid-template-columns: minmax(500px, 1.35fr) minmax(280px, .65fr); gap: 22px; align-items: stretch; }
.board-panel, .fleet-panel { border: 1px solid var(--line); background: var(--panel); backdrop-filter: blur(14px); box-shadow: 0 22px 60px rgba(0,0,0,.2); }
.board-panel { padding: 24px; }.placement-panel { display: flex; flex-direction: column; align-items: center; }.panel-heading { width: 100%; display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px; }.panel-heading h1, .panel-heading h2 { font: 600 26px/1 'Barlow Condensed'; text-transform: uppercase; letter-spacing: .055em; margin: 0; }.panel-heading h2 { font-size: 22px; }
.secondary-button, .text-button, .primary-button { border: 0; cursor: pointer; text-transform: uppercase; font: 700 11px/1 'Inter'; letter-spacing: .12em; }
.secondary-button { color: #b5cbce; background: rgba(60, 118, 123, .14); border: 1px solid var(--line); padding: 12px 15px; }.secondary-button:hover { color: var(--ink); border-color: rgba(81, 221, 210, .5); }.rotate-icon { display: inline-block; color: var(--teal); margin-right: 5px; }
.text-button { color: var(--muted); background: transparent; padding: 13px; }.text-button:hover { color: var(--ink); }
.primary-button { width: 100%; color: #03201f; background: linear-gradient(135deg, var(--teal-bright), #30c8bd); padding: 16px 18px; box-shadow: 0 9px 28px rgba(38, 211, 198, .16); }.primary-button:hover { filter: brightness(1.08); }.primary-button span { float: right; font-size: 18px; }.primary-button:disabled { cursor: not-allowed; filter: grayscale(.6); opacity: .45; }

.board { --gap: 3px; display: grid; grid-template-columns: repeat(10, 1fr); gap: var(--gap); width: min(100%, 490px); aspect-ratio: 1; padding: 9px; border: 1px solid rgba(86, 174, 177, .2); background: rgba(2, 17, 24, .72); box-shadow: inset 0 0 35px rgba(0,0,0,.38); }
.cell { position: relative; min-width: 0; aspect-ratio: 1; padding: 0; border: 1px solid rgba(81, 149, 155, .12); background: var(--cell); cursor: pointer; transition: background .12s, border-color .12s, transform .12s; }
.cell:hover { background: var(--cell-hover); border-color: rgba(84, 218, 208, .48); z-index: 2; }.cell:active { transform: scale(.92); }.cell.ship { background: linear-gradient(135deg, #2a8e89, #1a5d61); border-color: rgba(113, 239, 227, .42); box-shadow: inset 0 0 0 2px rgba(4, 28, 34, .22); }.cell.ship::before { content: ''; position: absolute; inset: 34%; border-radius: 50%; border: 1px solid rgba(205, 255, 249, .45); }.cell.miss::after { content: ''; position: absolute; width: 5px; height: 5px; border-radius: 50%; background: var(--miss); top: 50%; left: 50%; transform: translate(-50%, -50%); box-shadow: 0 0 8px rgba(159, 199, 204, .5); }.cell.hit { background: rgba(158, 47, 39, .46); border-color: rgba(255, 118, 95, .75); }.cell.hit::after { content: '×'; position: absolute; inset: 0; display: grid; place-items: center; color: #ff8a74; font: 600 25px/1 'Barlow Condensed'; text-shadow: 0 0 10px #ff5c46; }.cell.sunk { background: rgba(117, 29, 25, .64); }.cell.targetable::before { content: ''; position: absolute; inset: 28%; border: 1px solid transparent; border-radius: 50%; }.cell.targetable:hover::before { border-color: var(--teal-bright); box-shadow: 0 0 9px var(--teal); }.cell[disabled] { cursor: default; }.cell[disabled]:active { transform: none; }
.board-hint { color: var(--muted); font-size: 11px; text-align: center; margin: 16px 0 0; }

.fleet-panel { padding: 24px; display: flex; flex-direction: column; }.fleet-title { display: flex; justify-content: space-between; padding-bottom: 17px; border-bottom: 1px solid var(--line); }.fleet-title span { font: 600 10px 'Inter'; letter-spacing: .1em; color: var(--teal); }.fleet-list { display: grid; gap: 8px; padding: 18px 0; }.fleet-item { width: 100%; min-height: 53px; padding: 9px 12px; display: grid; grid-template-columns: 39px 1fr auto; gap: 10px; align-items: center; text-align: left; border: 1px solid transparent; background: rgba(2, 20, 27, .4); color: var(--ink); cursor: pointer; }.fleet-item:hover, .fleet-item.selected { border-color: rgba(73, 211, 201, .45); background: rgba(26, 91, 91, .25); }.fleet-item.selected { box-shadow: inset 3px 0 var(--teal); }.ship-silhouette { height: 20px; display: flex; gap: 2px; align-items: center; }.ship-silhouette i { width: 5px; height: 8px; background: #668d92; }.fleet-item.placed .ship-silhouette i { background: var(--teal); }.fleet-item strong { display: block; font: 600 15px 'Barlow Condensed'; letter-spacing: .05em; text-transform: uppercase; }.fleet-item small { color: var(--muted); font-size: 8px; letter-spacing: .11em; }.ready-mark { width: 20px; height: 20px; border: 1px solid #49666b; display: grid; place-items: center; color: transparent; font-size: 11px; }.fleet-item.placed .ready-mark { color: #042522; background: var(--teal); border-color: var(--teal); }.placement-actions { margin-top: auto; display: grid; gap: 9px; }.secondary-button.wide { width: 100%; }

.battle-layout { display: grid; grid-template-columns: 1fr 35px 1fr; align-items: center; gap: 10px; }.battle-panel { min-width: 0; }.panel-heading.compact { margin-bottom: 17px; }.ships-left { color: var(--muted); font: 600 9px 'Inter'; letter-spacing: .1em; text-transform: uppercase; }.versus { display: grid; justify-items: center; gap: 9px; color: var(--muted); font: 600 12px 'Barlow Condensed'; }.versus span { width: 1px; height: 45px; background: var(--line); }.enemy-panel { border-top-color: rgba(240, 99, 79, .25); }

.result-dialog { width: min(410px, calc(100% - 32px)); padding: 38px; color: var(--ink); text-align: center; border: 1px solid rgba(88, 219, 208, .45); background: #09212b; box-shadow: 0 35px 120px #000; }.result-dialog::backdrop { background: rgba(1, 9, 13, .82); backdrop-filter: blur(8px); }.result-dialog h2 { font: 700 48px/1 'Barlow Condensed'; text-transform: uppercase; letter-spacing: .06em; margin: 7px 0 12px; }.result-dialog p { color: var(--muted); font-size: 13px; line-height: 1.65; margin: 0 0 26px; }.result-emblem { width: 58px; height: 58px; margin: 0 auto 19px; display: grid; place-items: center; color: #03201f; background: var(--teal); clip-path: polygon(50% 0, 61% 34%, 98% 35%, 68% 56%, 79% 92%, 50% 71%, 21% 92%, 32% 56%, 2% 35%, 39% 34%); }.result-dialog.defeat { border-color: rgba(255, 106, 87, .45); }.result-dialog.defeat .result-emblem { background: var(--hit); }

@media (max-width: 860px) {
  .placement-layout { grid-template-columns: 1fr; }.fleet-panel { min-height: 0; }.fleet-list { grid-template-columns: 1fr 1fr; }.placement-actions { margin-top: 5px; }.battle-layout { grid-template-columns: 1fr; }.versus { grid-template-columns: 1fr auto 1fr; align-items: center; }.versus span { width: 100%; height: 1px; }.board { width: min(100%, 520px); margin-inline: auto; }
}
@media (max-width: 560px) {
  .shell { width: min(100% - 20px, 520px); padding-top: 10px; }.masthead { height: 60px; }.brand { font-size: 19px; gap: 9px; }.brand-mark { transform: scale(.82); transform-origin: left center; margin-right: -4px; }.scoreboard { gap: 9px; }.scoreboard span:not(.score-rule) { min-width: 36px; }.command-bar { margin: 14px 0 12px; }.command-bar p { font-size: 12px; }.placement-layout { gap: 12px; }.board-panel, .fleet-panel { padding: 14px; }.panel-heading { margin-bottom: 14px; }.panel-heading h1 { font-size: 22px; }.secondary-button { padding: 10px; }.board { --gap: 2px; padding: 6px; }.fleet-list { grid-template-columns: 1fr; gap: 5px; padding: 12px 0; }.fleet-item { min-height: 45px; }.battle-layout { gap: 8px; }.battle-panel { padding: 12px; }.panel-heading h2 { font-size: 19px; }.panel-heading.compact { margin-bottom: 11px; }.versus span { height: 1px; }.versus { grid-template-columns: 1fr auto 1fr; width: 75%; margin: 0 auto; }.result-dialog { padding: 30px 23px; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; scroll-behavior: auto !important; } }