:root {
  color-scheme: dark;
  --ink: #eefcf8;
  --muted: #91aaa6;
  --night: #071216;
  --panel: #0b1c20;
  --line: rgba(177, 231, 218, .14);
  --mint: #38e4be;
  --yellow: #ffdc7a;
  --danger: #ff7c71;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--night); color: var(--ink); }
body { min-height: 100svh; overflow-x: hidden; }
button, a { font: inherit; }
button { touch-action: manipulation; }

.app-shell { min-height: 100svh; display: grid; grid-template-rows: auto 1fr; padding: max(14px, env(safe-area-inset-top)) max(14px, env(safe-area-inset-right)) max(14px, env(safe-area-inset-bottom)) max(14px, env(safe-area-inset-left)); gap: 14px; }
.topbar { min-height: 64px; display: flex; align-items: center; gap: 16px; }
.brand { color: var(--ink); text-decoration: none; font-weight: 750; letter-spacing: .12em; display: flex; align-items: center; gap: 10px; white-space: nowrap; }
.brand b { color: var(--mint); }
.brand-mark { width: 38px; height: 38px; border: 1px solid var(--mint); display: grid; place-items: center; color: var(--mint); font-size: 28px; line-height: 1; border-radius: 50%; }
.connection-pill { margin-left: auto; border: 1px solid var(--line); background: rgba(10, 28, 32, .85); min-height: 40px; padding: 0 14px; display: flex; align-items: center; gap: 9px; border-radius: 99px; color: var(--muted); font-size: .82rem; font-weight: 650; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: #657572; box-shadow: 0 0 0 4px rgba(101, 117, 114, .12); }
.connection-pill[data-state="connected"] .dot { background: var(--mint); box-shadow: 0 0 0 4px rgba(56, 228, 190, .14), 0 0 14px var(--mint); }
.connection-pill[data-state="connecting"] .dot { background: var(--yellow); animation: pulse 1s infinite; }
.connection-pill[data-state="error"] .dot { background: var(--danger); }
.header-actions { display: flex; gap: 8px; }
.button, .icon-button, .reset-button { border: 0; cursor: pointer; transition: transform .15s ease, background .15s ease, border-color .15s ease; }
.button:active, .icon-button:active, .reset-button:active { transform: translateY(1px) scale(.985); }
.button { min-height: 44px; padding: 0 18px; border-radius: 7px; font-weight: 750; }
.button-primary { color: #061512; background: var(--mint); box-shadow: 0 8px 28px rgba(56, 228, 190, .16); }
.button-primary:hover { background: #5ff0cf; }
.button-quiet { color: var(--ink); background: #132a2e; border: 1px solid var(--line); }
.button-ghost { color: var(--ink); background: transparent; border: 1px solid rgba(238, 252, 248, .28); }
.button-large { min-height: 52px; padding: 0 22px; }
.icon-button { width: 44px; height: 44px; border-radius: 50%; color: var(--ink); background: transparent; border: 1px solid var(--line); font-weight: 800; font-size: 1rem; }

.game-layout { min-height: 0; display: grid; grid-template-columns: minmax(0, 1fr) 258px; gap: 14px; }
.game-stage { min-height: 560px; position: relative; overflow: hidden; border-radius: 13px; border: 1px solid var(--line); background: #0b343b; box-shadow: inset 0 1px rgba(255,255,255,.04), 0 22px 70px rgba(0,0,0,.24); }
#gameCanvas { width: 100%; height: 100%; display: block; }
.mission-card { position: absolute; left: 18px; top: 18px; width: min(310px, calc(100% - 36px)); padding: 15px 16px; border: 1px solid rgba(209, 249, 239, .2); border-radius: 9px; background: rgba(5, 20, 23, .78); backdrop-filter: blur(12px); box-shadow: 0 10px 32px rgba(0,0,0,.18); }
.eyebrow { color: var(--mint); letter-spacing: .16em; font-size: .7rem; font-weight: 850; }
.mission-line { margin-top: 8px; display: flex; align-items: center; gap: 14px; }
.mission-line > span { font-size: .76rem; white-space: nowrap; color: var(--muted); }
.mission-line strong { color: var(--ink); font-size: 1.35rem; }
.zone-bar { height: 7px; border-radius: 9px; background: rgba(255,255,255,.09); flex: 1; position: relative; overflow: visible; }
.zone-bar span { position: absolute; left: 42%; width: 22%; height: 100%; border-radius: inherit; background: var(--mint); box-shadow: 0 0 14px rgba(56,228,190,.38); }
.zone-bar i { position: absolute; top: -4px; left: 0%; width: 2px; height: 15px; background: var(--yellow); box-shadow: 0 0 8px var(--yellow); transition: left .35s ease; }
.mission-card p { margin: 9px 0 0; color: var(--muted); font-size: .78rem; line-height: 1.4; }
.distance-badge { position: absolute; right: 18px; top: 18px; text-align: right; text-shadow: 0 2px 16px rgba(0,0,0,.35); }
.distance-badge span { display: block; font-size: clamp(2rem, 4vw, 3.5rem); line-height: .9; font-weight: 800; font-variant-numeric: tabular-nums; }
.distance-badge small { color: rgba(238,252,248,.7); letter-spacing: .18em; font-weight: 750; }
.combo-badge { position: absolute; left: 18px; bottom: 18px; color: var(--yellow); border: 1px solid rgba(255, 220, 122, .3); background: rgba(5, 20, 23, .76); padding: 9px 12px; border-radius: 6px; font-size: .75rem; font-weight: 800; letter-spacing: .1em; opacity: .65; transition: transform .2s, opacity .2s; }
.combo-badge.hot { opacity: 1; transform: scale(1.06); }

.metrics-panel { background: var(--panel); border: 1px solid var(--line); border-radius: 13px; padding: 18px; display: flex; flex-direction: column; min-height: 0; }
.metric { position: relative; padding: 16px 0; border-bottom: 1px solid var(--line); }
.metric-power { padding-top: 4px; display: flex; align-items: end; justify-content: space-between; }
.metric-power strong { font-size: 4.1rem; line-height: .92; letter-spacing: -.06em; }
.metric-label { display: block; color: var(--muted); letter-spacing: .13em; font-weight: 750; font-size: .67rem; margin-bottom: 6px; }
.metric strong { display: block; font-size: 2rem; font-variant-numeric: tabular-nums; letter-spacing: -.035em; }
.unit { color: var(--mint); font-size: .66rem; font-weight: 800; letter-spacing: .12em; }
.metric-grid { display: grid; grid-template-columns: 1fr 1fr; column-gap: 18px; }
.reset-button { margin-top: auto; min-height: 44px; color: var(--muted); background: transparent; border: 1px solid var(--line); border-radius: 7px; font-weight: 700; }
.reset-button:hover { color: var(--ink); border-color: rgba(177,231,218,.3); }
.session-note { margin: 10px 0 0; text-align: center; color: #68807c; font-size: .67rem; }

.start-overlay { position: absolute; inset: 0; display: grid; place-items: center; padding: 24px; background: radial-gradient(circle at 50% 65%, rgba(16, 87, 91, .16), rgba(3, 14, 17, .82) 72%); backdrop-filter: blur(3px); transition: opacity .35s, visibility .35s; }
.start-overlay.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.start-panel { text-align: center; width: min(560px, 100%); }
.start-panel h1 { margin: 12px 0 14px; font-size: clamp(2.6rem, 6vw, 5.3rem); line-height: .9; letter-spacing: -.065em; }
.start-panel p { width: min(440px, 100%); margin: 0 auto 24px; color: #bed1cd; line-height: 1.55; }
.start-actions { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; }
.start-panel small { display: block; margin-top: 17px; color: #78908b; }

dialog { width: min(640px, calc(100% - 28px)); border: 1px solid rgba(177,231,218,.22); border-radius: 14px; color: var(--ink); background: #09191d; padding: 22px; box-shadow: 0 28px 100px rgba(0,0,0,.55); }
dialog::backdrop { background: rgba(1,8,10,.72); backdrop-filter: blur(6px); }
.dialog-head { display: flex; align-items: flex-start; justify-content: space-between; }
.dialog-head h2 { margin: 5px 0 18px; font-size: 1.65rem; }
.close-button { font-size: 1.6rem; line-height: 1; }
.diagnostic-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.diagnostic-grid div { background: #0e2428; border: 1px solid var(--line); padding: 12px; border-radius: 7px; }
.diagnostic-grid span { display: block; color: var(--muted); font-size: .72rem; margin-bottom: 5px; }
.diagnostic-grid strong { font-size: .9rem; }
.log-wrap { margin-top: 12px; border: 1px solid var(--line); border-radius: 7px; overflow: hidden; }
.log-title { background: #10262a; color: var(--muted); padding: 8px 12px; font-size: .72rem; font-weight: 750; }
pre { margin: 0; min-height: 115px; max-height: 190px; overflow: auto; padding: 12px; color: #9ee8d7; font: .72rem/1.55 ui-monospace, SFMono-Regular, Consolas, monospace; white-space: pre-wrap; }
.help-copy { color: var(--muted); font-size: .82rem; line-height: 1.55; margin: 14px 0 0; }
.help-copy b { color: var(--ink); }

@keyframes pulse { 50% { opacity: .35; transform: scale(.8); } }
@media (max-width: 860px) {
  body { overflow: auto; }
  .game-layout { grid-template-columns: 1fr; }
  .game-stage { min-height: min(68svh, 620px); }
  .metrics-panel { min-height: auto; }
  .metric-grid { grid-template-columns: repeat(4, 1fr); gap: 12px; }
  .metric { border-bottom: 0; }
  .reset-button { margin-top: 12px; }
}
@media (max-width: 650px) {
  .app-shell { gap: 9px; padding: 9px; }
  .topbar { flex-wrap: wrap; gap: 8px; }
  .brand { font-size: .84rem; }
  .brand-mark { width: 34px; height: 34px; }
  .connection-pill { order: 2; margin-left: 0; min-height: 34px; }
  .header-actions { margin-left: auto; }
  .header-actions .button { padding: 0 12px; font-size: .76rem; }
  .button-quiet { display: none; }
  .game-stage { min-height: 64svh; }
  .metric-grid { grid-template-columns: 1fr 1fr; }
  .mission-card { right: 12px; left: 12px; top: 12px; width: auto; }
  .distance-badge { top: 120px; right: 12px; }
  .distance-badge span { font-size: 2.3rem; }
  .start-panel h1 { font-size: 3rem; }
  .diagnostic-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; } }