:root {
  color-scheme: dark;
  --bg: #071413;
  --panel: rgba(8, 29, 27, .82);
  --panel-solid: #0a201e;
  --line: rgba(99, 255, 190, .17);
  --line-strong: rgba(99, 255, 190, .38);
  --accent: #62f5ad;
  --accent-bright: #b0ffd8;
  --accent-rgb: 98, 245, 173;
  --danger: #ff6961;
  --muted: #85a9a0;
  --text: #e5fff4;
  --shadow: 0 24px 80px rgba(0, 0, 0, .38);
  --custom-bg: var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body[data-theme="abyss"] { --bg:#06131d; --panel:rgba(7,26,39,.84); --panel-solid:#091d2b; --line:rgba(72,196,255,.18); --line-strong:rgba(72,196,255,.4); --accent:#55c9ff; --accent-bright:#c2efff; --accent-rgb:85,201,255; --muted:#829eae; }
body[data-theme="amber"] { --bg:#171006; --panel:rgba(34,23,7,.84); --panel-solid:#241806; --line:rgba(255,187,64,.18); --line-strong:rgba(255,187,64,.42); --accent:#ffb93f; --accent-bright:#ffe0a6; --accent-rgb:255,185,63; --muted:#b5a17e; }

* { box-sizing: border-box; }
html { min-height: 100%; background: #030807; }
body { margin: 0; min-width: 320px; min-height: 100vh; min-height: 100svh; color: var(--text); background: radial-gradient(circle at 50% 5%, rgba(var(--accent-rgb), .08), transparent 33%), var(--custom-bg); transition: background-color .3s ease, color .3s ease; }
button, input { font: inherit; }
button { color: inherit; }
button:focus-visible, input:focus-visible, .upload-row:focus-within { outline: 2px solid var(--accent-bright); outline-offset: 3px; }
[hidden] { display: none !important; }
.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; }
.noise { position: fixed; inset: 0; pointer-events: none; opacity: .055; z-index: 20; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E"); }

.shell { width: min(1420px, calc(100% - 48px)); margin: 0 auto; padding: 26px 0 56px; }
.topbar { display:flex; align-items:center; justify-content:space-between; gap:20px; padding-bottom:20px; border-bottom:1px solid var(--line); }
.brand { display:flex; align-items:center; gap:13px; color:var(--text); text-decoration:none; letter-spacing:.08em; }
.brand strong { display:block; font-size:16px; font-weight:750; }
.brand small { display:block; color:var(--muted); margin-top:3px; font-size:10px; letter-spacing:.18em; }
.brand-mark { position:relative; display:grid; place-items:center; width:42px; height:42px; border:1px solid var(--line-strong); border-radius:50%; overflow:hidden; box-shadow:inset 0 0 18px rgba(var(--accent-rgb),.1); }
.brand-mark::before, .brand-mark::after { content:""; position:absolute; background:var(--line-strong); }
.brand-mark::before { width:100%; height:1px; }
.brand-mark::after { width:1px; height:100%; }
.brand-mark i { width:6px; height:6px; background:var(--accent); border-radius:50%; box-shadow:0 0 12px var(--accent); }
.brand-mark i::after { content:""; position:absolute; width:20px; height:20px; border:1px solid var(--accent); border-left-color:transparent; border-bottom-color:transparent; border-radius:50%; transform:rotate(-25deg); top:10px; left:10px; }
.top-actions { display:flex; gap:10px; align-items:center; }
.button, .icon-button { border:1px solid var(--line-strong); background:rgba(var(--accent-rgb),.06); border-radius:5px; cursor:pointer; transition:.18s ease; }
.button { padding:10px 16px; font-size:13px; font-weight:700; letter-spacing:.04em; }
.button:hover:not(:disabled), .icon-button:hover { background:rgba(var(--accent-rgb),.13); border-color:var(--accent); }
.button:disabled { opacity:.38; cursor:not-allowed; }
.button.primary { color:#03100b; background:var(--accent); border-color:var(--accent); box-shadow:0 0 24px rgba(var(--accent-rgb),.18); }
.button.primary:hover { background:var(--accent-bright); }
.button.large { padding:14px 22px; }
.button.ghost { background:transparent; }
.button.full { width:100%; }
.button.danger-outline { border-color:rgba(255,105,97,.45); color:#ff9c96; background:transparent; }
.icon-button { width:40px; height:40px; color:var(--accent); }
.icon-button[aria-pressed="true"] { color:var(--danger); border-color:rgba(255,105,97,.5); }

.dashboard { min-height:84px; display:grid; grid-template-columns:145px 145px 180px minmax(200px,1fr); align-items:center; border-bottom:1px solid var(--line); }
.stat { padding:0 24px; border-right:1px solid var(--line); }
.stat:first-child { padding-left:0; }
.stat span, .signal-meter > span { display:block; color:var(--muted); font-size:10px; letter-spacing:.16em; text-transform:uppercase; margin-bottom:8px; }
.stat strong { font-family:"SFMono-Regular",Consolas,monospace; font-size:19px; letter-spacing:.08em; }
.status-stat strong { color:var(--accent); font-family:inherit; font-size:14px; }
.status-stat strong[data-state="danger"] { color:var(--danger); }
.signal-meter { padding-left:28px; }
.meter-track { height:4px; background:rgba(var(--accent-rgb),.1); overflow:hidden; }
.meter-track i { display:block; height:100%; width:0%; background:linear-gradient(90deg,var(--accent),var(--accent-bright)); box-shadow:0 0 12px var(--accent); transition:width .16s linear; }

.workspace { display:grid; grid-template-columns:minmax(0,1fr) 330px; gap:24px; padding-top:24px; align-items:start; }
.game-card, .settings-panel { border:1px solid var(--line); background:var(--panel); box-shadow:var(--shadow); backdrop-filter:blur(18px); }
.game-card { padding:26px; }
.section-heading { display:flex; align-items:flex-end; justify-content:space-between; gap:24px; margin-bottom:20px; }
.eyebrow { display:block; color:var(--accent); font:10px/1.2 "SFMono-Regular",Consolas,monospace; letter-spacing:.2em; margin-bottom:7px; }
h1,h2 { margin:0; font-weight:650; letter-spacing:.01em; }
h1 { font-size:clamp(20px,2vw,28px); }
h2 { font-size:19px; }
.difficulty-switch { display:flex; padding:3px; border:1px solid var(--line); border-radius:5px; }
.difficulty-switch button { min-width:54px; padding:7px 10px; border:0; border-radius:3px; color:var(--muted); background:transparent; cursor:pointer; font-size:12px; }
.difficulty-switch button.active { color:#02100a; background:var(--accent); font-weight:800; }

.board-wrap { position:relative; width:min(100%, 720px); aspect-ratio:1; margin:0 auto; padding:14px; background:radial-gradient(circle,rgba(var(--accent-rgb),.085),transparent 64%),rgba(0,0,0,.18); border:1px solid var(--line); overflow:hidden; }
.board { position:relative; z-index:2; display:grid; grid-template-columns:repeat(8,1fr); grid-template-rows:repeat(8,1fr); width:100%; height:100%; border-top:1px solid var(--line-strong); border-left:1px solid var(--line-strong); touch-action:none; user-select:none; }
.cell { position:relative; display:grid; place-items:center; padding:0; border:0; border-right:1px solid var(--line-strong); border-bottom:1px solid var(--line-strong); background:rgba(var(--accent-rgb),.018); cursor:crosshair; overflow:hidden; }
.cell::after { content:""; position:absolute; inset:7%; border:1px solid transparent; transition:.16s ease; }
.cell:hover::after, .cell.pointer-cell::after { border-color:rgba(var(--accent-rgb),.4); background:rgba(var(--accent-rgb),.08); }
.cell.miss { cursor:default; }
.cell.miss::before { content:"×"; color:var(--muted); font:16px/1 monospace; opacity:.48; }
.cell.hit, .cell.revealed { background:rgba(255,105,97,.1); }
.cell img { width:68%; height:68%; object-fit:contain; filter:drop-shadow(0 0 10px rgba(255,105,97,.65)); animation:target-lock .45s ease-out; }
.scope-corner { position:absolute; z-index:5; width:22px; height:22px; pointer-events:none; }
.scope-corner::before,.scope-corner::after { content:""; position:absolute; background:var(--accent); }
.scope-corner::before { width:22px; height:1px; }
.scope-corner::after { width:1px; height:22px; }
.scope-corner.tl { top:7px;left:7px; }.scope-corner.tr{top:7px;right:7px;transform:rotate(90deg)}.scope-corner.br{bottom:7px;right:7px;transform:rotate(180deg)}.scope-corner.bl{bottom:7px;left:7px;transform:rotate(270deg)}
.scan-pulse { position:absolute; z-index:3; width:22px; height:22px; margin:-11px 0 0 -11px; border:1px solid var(--accent); border-radius:50%; opacity:0; pointer-events:none; }
.scan-pulse.active { animation:scan-ping .7s ease-out; }
.start-overlay,.result-overlay { position:absolute; z-index:8; inset:14px; display:flex; flex-direction:column; align-items:center; justify-content:center; text-align:center; padding:30px; background:rgba(3,13,12,.86); backdrop-filter:blur(6px); }
.start-overlay strong,.result-overlay strong { font-size:clamp(20px,3vw,34px); margin:18px 0 8px; }
.start-overlay p,.result-overlay p { color:var(--muted); max-width:430px; line-height:1.65; margin:0 0 23px; font-size:14px; }
.radar-mini { position:relative; width:72px; height:72px; border:1px solid var(--line-strong); border-radius:50%; background:repeating-radial-gradient(circle,transparent 0 15px,var(--line) 16px 17px); overflow:hidden; }
.radar-mini::before,.radar-mini::after { content:""; position:absolute; background:var(--line-strong); }.radar-mini::before{width:100%;height:1px;top:50%}.radar-mini::after{height:100%;width:1px;left:50%}
.radar-mini span { position:absolute; inset:50% 50% 0 0; transform-origin:100% 0; background:conic-gradient(from 90deg,transparent,rgba(var(--accent-rgb),.6)); animation:sweep 2.4s linear infinite; }
.radar-mini i { position:absolute; width:5px;height:5px;border-radius:50%;background:var(--accent);top:20px;right:18px;box-shadow:0 0 10px var(--accent); }
.result-overlay { background:rgba(3,13,12,.91); }
.result-overlay > span { color:var(--accent); font:10px/1.2 monospace; letter-spacing:.24em; }
.result-overlay.loss > span,.result-overlay.loss strong { color:var(--danger); }
.game-controls { display:flex; align-items:center; gap:10px; margin-top:18px; }
.game-controls p { margin:0 0 0 auto; color:var(--muted); font-size:12px; }
.legend-dot { display:inline-block; width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px var(--accent);margin-right:8px; }

.settings-panel { padding:22px; max-height:calc(100vh - 150px); overflow:auto; scrollbar-width:thin; scrollbar-color:var(--line-strong) transparent; }
.settings-panel.collapsed { display:none; }
.panel-heading { display:flex; align-items:flex-start; justify-content:space-between; gap:12px; padding-bottom:18px; border-bottom:1px solid var(--line); }
.local-badge { color:var(--muted); border:1px solid var(--line); border-radius:10px; padding:4px 7px; font-size:9px; white-space:nowrap; }
.setting-group { padding:19px 0; border-bottom:1px solid var(--line); }
.setting-group > label:first-child,.setting-label { display:flex; justify-content:space-between; color:var(--text); font-size:12px; font-weight:700; margin-bottom:13px; }
.setting-group output { color:var(--accent); font:11px monospace; }
.setting-group p { color:var(--muted); font-size:10px; line-height:1.55; margin:9px 0 0; }
input[type="range"] { width:100%; height:4px; accent-color:var(--accent); }
.theme-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:6px; }
.theme-grid button { padding:8px 4px; border:1px solid var(--line); background:transparent; border-radius:4px; color:var(--muted); cursor:pointer; font-size:10px; }
.theme-grid button.active { border-color:var(--accent); color:var(--text); background:rgba(var(--accent-rgb),.07); }
.swatch { display:block; width:16px;height:16px;border-radius:50%;margin:0 auto 5px; }.swatch.radar{background:#62f5ad}.swatch.abyss{background:#55c9ff}.swatch.amber{background:#ffb93f}
.color-row { display:flex!important; align-items:center; margin:14px 0 0!important; color:var(--muted)!important; font-weight:500!important; }
input[type="color"] { width:40px;height:24px;border:1px solid var(--line);background:transparent;padding:2px;cursor:pointer; }
.uploads > p { margin:-5px 0 12px; }
.upload-row { position:relative; display:flex!important; align-items:center; gap:10px; margin:0!important; padding:10px; border:1px solid var(--line); border-radius:4px; cursor:pointer; transition:.15s ease; }
.upload-row + .upload-row { margin-top:8px!important; }
.upload-row:hover { border-color:var(--line-strong); background:rgba(var(--accent-rgb),.04); }
.upload-row > span:first-child { min-width:0; flex:1; }
.upload-row b,.upload-row small { display:block; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.upload-row b { font-size:11px; }.upload-row small { color:var(--muted); font-size:9px; font-weight:400; margin-top:4px; }
.upload-row input { position:absolute; inset:0; opacity:0; cursor:pointer; }
.upload-action { color:var(--accent); font-size:10px; }
.upload-row img { width:32px;height:32px;object-fit:contain;border-radius:3px;background:rgba(var(--accent-rgb),.06); }
.preview-row { text-align:right; min-height:23px; }
.text-button { color:var(--accent); background:none; border:0; padding:5px 0; cursor:pointer; font-size:10px; }
.notice { min-height:17px; color:var(--accent); font-size:10px; line-height:1.5; margin-top:8px; }
.notice.error { color:var(--danger); }
.privacy-note { color:var(--muted); font-size:9px; line-height:1.55; margin:12px 2px 0; }

@keyframes sweep { to { transform:rotate(360deg); } }
@keyframes scan-ping { 0%{opacity:.9;transform:scale(.5)} 100%{opacity:0;transform:scale(4.5)} }
@keyframes target-lock { from{opacity:0;transform:scale(.35) rotate(-45deg)} to{opacity:1;transform:scale(1) rotate(0)} }
@media (prefers-reduced-motion:reduce) { *,*::before,*::after { animation-duration:.01ms!important; animation-iteration-count:1!important; scroll-behavior:auto!important; transition-duration:.01ms!important; } }

@media (max-width:1050px) {
  .workspace { grid-template-columns:1fr; }
  .settings-panel { max-height:none; }
  .settings-panel.collapsed { display:none; }
}
@media (max-width:700px) {
  .shell { width:min(100% - 24px, 620px); padding-top:14px; }
  .brand small { display:none; }
  .dashboard { grid-template-columns:repeat(3,1fr); min-height:76px; }
  .stat { padding:0 10px; text-align:center; }
  .stat:first-child { padding-left:10px; }
  .stat strong { font-size:15px; }
  .signal-meter { grid-column:1/-1; padding:0 0 12px; }
  .dashboard { padding-top:12px; }
  .game-card { padding:14px; }
  .section-heading { align-items:flex-start; flex-direction:column; gap:15px; }
  .difficulty-switch { width:100%; }
  .difficulty-switch button { flex:1; }
  .board-wrap { padding:8px; }
  .start-overlay,.result-overlay { inset:8px; padding:20px; }
  .start-overlay p,.result-overlay p { font-size:12px; }
  .game-controls { flex-wrap:wrap; }
  .game-controls p { width:100%; margin:4px 0 0; }
  .scope-corner.tl,.scope-corner.tr { top:3px; }.scope-corner.bl,.scope-corner.br{bottom:3px}.scope-corner.tl,.scope-corner.bl{left:3px}.scope-corner.tr,.scope-corner.br{right:3px}
}
@media (max-width:420px) {
  .button { padding:9px 11px; }
  .top-actions { gap:6px; }
  .brand strong { font-size:13px; }
  .brand-mark { width:36px;height:36px; }
  .brand-mark i::after { top:7px;left:7px; }
  h1 { font-size:19px; }
}