:root {
  color-scheme: dark;
  --bg: #06131c;
  --panel: #0c2532;
  --panel2: #123747;
  --text: #f5fbff;
  --muted: #b6ccd7;
  --accent: #70e5ff;
  --good: #aaf29a;
  --danger: #ffad9f;
  --focus: #fff27a;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; touch-action: manipulation; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--text); }
body { overscroll-behavior: none; background: radial-gradient(circle at top, #114052, var(--bg) 38rem); }
a { color: var(--accent); }
a:focus-visible { outline: 4px solid var(--focus); outline-offset: 3px; border-radius: .25rem; }
button, input { font: inherit; }
button {
  min-height: 3.4rem;
  border: 2px solid #3c6d7e;
  border-radius: 1rem;
  background: var(--panel2);
  color: var(--text);
  font-weight: 800;
  padding: .8rem;
}
button:focus-visible, input:focus-visible, summary:focus-visible { outline: 4px solid var(--focus); outline-offset: 3px; }
button:active, button.held { transform: scale(.98); background: #20566a; }
button.primary { background: var(--accent); color: #00141b; border-color: transparent; }
button[aria-pressed="true"] { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent); }
button[aria-disabled="true"] { opacity: .48; border-style: dashed; }
button[aria-disabled="true"]:focus-visible { opacity: .78; }
input { width: 100%; min-height: 3.3rem; border-radius: .8rem; border: 2px solid #3c6d7e; background: #041019; color: white; padding: .7rem; font-size: 1.2rem; text-transform: uppercase; }
main { width: min(56rem, 100%); margin: 0 auto; padding: max(1rem, env(safe-area-inset-top)) 1rem calc(1rem + env(safe-area-inset-bottom)); }
h1 { margin: .15rem 0 .45rem; font-size: clamp(2rem, 10vw, 4rem); letter-spacing: -.045em; }
h2 { margin: 0 0 .6rem; }
p { line-height: 1.5; }
.eyebrow { margin: 0; color: var(--accent); font-weight: 900; letter-spacing: .1em; text-transform: uppercase; font-size: .82rem; }
.panel { margin: 1rem 0; padding: 1rem; background: rgba(12,37,50,.94); border: 1px solid #315c6d; border-radius: 1.1rem; }
.mode-picker { display: grid; gap: .7rem; }
.mode-picker legend { font-weight: 900; padding: 0 .4rem; }
.progression-panel fieldset { border: 1px solid #315c6d; border-radius: .9rem; margin: 1rem 0; padding: .8rem; }
.profile-summary { color: var(--good); font-weight: 800; }
.shop { display: grid; gap: .65rem; padding-top: .3rem; }
.shop h3, .shop p { margin: .35rem 0; }
.shop button { text-align: left; }
.operation-picker button[disabled], .boat-picker button[disabled], .shop button[disabled] { opacity: .55; }
.hint { color: var(--muted); }
.grid2 { display: grid; gap: .65rem; }
.game-header { display: flex; justify-content: space-between; align-items: flex-start; gap: .8rem; }
.game-header-actions { display: grid; gap: .4rem; min-width: 10rem; }
.small { width: auto; min-height: 2.8rem; font-size: .9rem; }
.mission { min-height: 4.2rem; padding: .9rem 1rem; background: rgba(112,229,255,.09); border-left: .35rem solid var(--accent); border-radius: .5rem; }
.warning { padding: .7rem; background: rgba(255,173,159,.12); border: 2px solid var(--danger); border-radius: .8rem; font-weight: 900; }
.status-strip { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .45rem; margin: .8rem 0; }
.status-strip div { padding: .55rem .4rem; border: 1px solid #315c6d; border-radius: .7rem; background: rgba(4,16,25,.8); text-align: center; }
.status-strip span { display: block; font-size: .72rem; color: var(--muted); }
.status-strip strong { display: block; font-size: .98rem; }
.control-deck {
  display: grid;
  grid-template-columns: 1fr 1.08fr 1fr;
  grid-template-areas:
    ". sonar route"
    "left throttle right"
    "reverse quick quick";
  gap: .55rem;
  min-height: 48vh;
  max-height: 34rem;
}
.control { min-height: 5.2rem; user-select: none; -webkit-user-select: none; }
.sonar { grid-area: sonar; }
.route-mode { grid-area: route; min-height: 5.2rem; font-size: .78rem; }
.left { grid-area: left; }
.throttle { grid-area: throttle; }
.right { grid-area: right; }
.reverse { grid-area: reverse; }
.quick { grid-area: quick; }
.systems { display: grid; grid-template-columns: repeat(2, 1fr); gap: .6rem; }
.systems button.active { border-color: var(--good); }
.result { border-color: var(--good); }
.skip { position: absolute; left: -9999px; top: 0; background: white; color: black; padding: .8rem; z-index: 20; }
.skip:focus { left: .5rem; top: .5rem; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
[hidden] { display: none !important; }
body[data-role="crew"] #leftButton,
body[data-role="crew"] #rightButton,
body[data-role="crew"] #throttleButton,
body[data-role="crew"] #reverseButton,
body[data-role="crew"] #anchorButton { opacity: .35; pointer-events: none; }
body[data-accessibility="reader"] .control { touch-action: manipulation; min-height: 4.8rem; }
body[data-accessibility="reader"] button:active { transform: none; }
@media (min-width: 44rem) {
  .grid2 { grid-template-columns: repeat(2, 1fr); }
  .control-deck { min-height: 27rem; }
}
@media (max-width: 31rem) {
  .game-header { align-items: stretch; }
  .game-header-actions { grid-template-columns: 1fr; min-width: 8.5rem; }
  .game-header-actions .small { font-size: .78rem; padding: .55rem; }
}
@media (max-width: 25rem) {
  .status-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .control { min-height: 4.5rem; font-size: .9rem; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }