/* ============================================================
   LONG DRIVE — UI. Calm · futuristic · premium. (see LONG_DRIVE_DESIGN_SYSTEM.md)
   ============================================================ */
:root {
  --ink: #070a11;
  --ink-2: #0b0f18;
  --glass: rgba(16, 21, 32, 0.52);
  --glass-strong: rgba(11, 15, 24, 0.86);
  --line: rgba(255, 255, 255, 0.10);
  --line-soft: rgba(255, 255, 255, 0.055);
  --text: #eef2f8;
  --muted: #8b94a8;
  --aqua: #7be7d6;
  --lav: #aab4ff;
  --amber: #ffce8a;
  --r-sm: 12px; --r: 18px; --r-lg: 24px;
  --ease: cubic-bezier(.22, .61, .36, 1);
  --font: "Inter", "SF Pro Display", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-display: "Rajdhani", "Chakra Petch", var(--font);
  --accent: #e64a2e; --accent-2: #ff7a4d;
  --ink-light: #14181f; --muted-light: #6b7280;
  --glass-light: rgba(255,255,255,0.60); --line-light: rgba(20,24,31,0.10);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; background: var(--ink); color: var(--text); font-family: var(--font); }
body { position: fixed; inset: 0; -webkit-user-select: none; user-select: none; -webkit-tap-highlight-color: transparent; }
#game { position: fixed; inset: 0; width: 100%; height: 100%; display: block; }
.hidden { display: none !important; }
.num { font-variant-numeric: tabular-nums; }

/* ============ LAUNCH SCREEN (light studio) ============ */
.menu { position: fixed; inset: 0; z-index: 40; display: flex; align-items: center; background: transparent;
  color: var(--ink-light); transition: opacity .45s var(--ease), transform .45s var(--ease); }
.menu.gone { opacity: 0; transform: scale(1.02); pointer-events: none; }

.menu-stage { width: min(560px, 62vw); margin-left: clamp(24px, 6vw, 100px); display: flex; flex-direction: column; gap: 3.2vh; }
.title { font-family: var(--font-display); font-weight: 700; text-transform: uppercase; line-height: .88;
  font-size: clamp(46px, 8.6vw, 104px); letter-spacing: 2px; color: var(--ink-light); }
.title span { display: block; color: var(--accent); }
.tagline { margin-top: 12px; font-family: var(--font-display); font-weight: 500; font-style: italic;
  font-size: clamp(15px, 2.2vw, 21px); letter-spacing: 1px; color: var(--muted-light); }

.nav { display: flex; flex-direction: column; gap: 12px; max-width: 470px; }
.nav-card { font-family: var(--font-display); cursor: pointer; text-align: left; color: var(--ink-light);
  background: var(--glass-light); border: 1px solid var(--line-light); border-radius: 16px; backdrop-filter: blur(14px) saturate(1.1);
  box-shadow: 0 10px 30px rgba(20,24,31,.07); transition: transform .18s var(--ease), box-shadow .18s var(--ease), border-color .18s var(--ease); }
.nav-card:hover { transform: translateY(-2px); box-shadow: 0 16px 42px rgba(20,24,31,.14); border-color: rgba(20,24,31,.2); }
.nav-card:active { transform: translateY(0); }
.nav-card.primary { display: grid; grid-template-columns: 1fr auto; align-items: center; padding: 20px 26px;
  background: linear-gradient(100deg, var(--accent), var(--accent-2)); color: #fff; border: none; box-shadow: 0 16px 42px rgba(230,74,46,.36); }
.nav-card.primary:hover { box-shadow: 0 24px 60px rgba(230,74,46,.5); filter: brightness(1.03); }
.nc-main { grid-column: 1; font-size: 30px; font-weight: 700; letter-spacing: 4px; }
.nc-sub { grid-column: 1; grid-row: 2; font-size: 12px; font-weight: 500; letter-spacing: .8px; opacity: .92; margin-top: 2px; }
.nc-go { grid-column: 2; grid-row: 1 / span 2; align-self: center; }
.nav-row { display: flex; gap: 12px; flex-wrap: wrap; }
.nav-row .nav-card { flex: 1 1 0; display: flex; flex-direction: column; gap: 2px; padding: 13px 18px; min-width: 96px; }
.nav-row .nav-card.sm { flex: 0 0 auto; justify-content: center; align-items: center; padding: 14px 22px; }
.nc-k { font-size: 10px; font-weight: 600; letter-spacing: 2px; text-transform: uppercase; color: var(--muted-light); }
.nc-v { font-size: 16px; font-weight: 600; letter-spacing: .5px; }

/* slide-in selection panels */
.select-panel { position: fixed; right: 0; top: 0; bottom: 0; width: min(560px, 94vw); z-index: 44;
  background: rgba(255,255,255,.9); backdrop-filter: blur(22px); border-left: 1px solid var(--line-light);
  box-shadow: -24px 0 70px rgba(20,24,31,.14); padding: 24px 24px 40px; overflow-y: auto; animation: slideIn .3s var(--ease) both; }
@keyframes slideIn { from { transform: translateX(36px); opacity: 0; } to { transform: none; opacity: 1; } }
.sp-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.sp-head h3 { font-family: var(--font-display); font-weight: 600; font-size: 21px; letter-spacing: 1.5px; text-transform: uppercase; }
.select-panel .x { background: none; border: none; font-size: 15px; cursor: pointer; color: var(--muted-light); width: 32px; height: 32px; border-radius: 8px; }
.select-panel .x:hover { background: rgba(20,24,31,.06); color: var(--ink-light); }

/* light vehicle/route cards */
.card-row { display: flex; gap: 12px; flex-wrap: wrap; }
.card { flex: 1 1 150px; max-width: 240px; min-width: 140px; background: #fff; border: 1px solid var(--line-light); border-radius: 14px;
  padding: 14px; cursor: pointer; color: var(--ink-light); text-align: left; box-shadow: 0 6px 18px rgba(20,24,31,.06);
  transition: transform .18s var(--ease), border-color .18s var(--ease), box-shadow .18s var(--ease); }
.card:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(20,24,31,.12); }
.card.selected { border-color: var(--accent); box-shadow: 0 0 0 1.5px var(--accent), 0 12px 30px rgba(230,74,46,.16); }
.card-name { font-family: var(--font-display); font-weight: 600; font-size: 17px; letter-spacing: .3px; }
.card-class, .card-desc { color: var(--muted-light); font-size: 12px; margin-top: 3px; line-height: 1.4; }
.map-card { min-height: 80px; }
.stats { margin-top: 10px; display: grid; gap: 6px; }
.stat { display: grid; grid-template-columns: 42px 1fr; align-items: center; gap: 8px; font-size: 10px; color: var(--muted-light); letter-spacing: .5px; }
.stat i { height: 4px; border-radius: 3px; background: linear-gradient(90deg, var(--accent), var(--accent-2)); display: block; }

/* Begin Things — bottom-right, dark mark on the light bg */
.powered-by { position: fixed; right: 22px; bottom: 18px; z-index: 41; display: flex; flex-direction: column; align-items: flex-end; gap: 2px; }
.powered-by .bt-mark { color: var(--ink-light); font-weight: 600; }
.powered-by .bt-mark i { background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 122 80'%3E%3Ctext x='0' y='74' font-family='Arial,Helvetica,sans-serif' font-weight='900' font-size='84' fill='%2314181f'%3EB%3C/text%3E%3Crect x='44' y='8' width='44' height='14' fill='%2314181f'/%3E%3Cpath d='M84 1 L116 15 L84 29 Z' fill='%2314181f'/%3E%3Crect x='54' y='19' width='14' height='55' fill='%2314181f'/%3E%3C/svg%3E") no-repeat center / contain; filter: none; }
.powered-by small { color: var(--muted-light); font-size: 10px; letter-spacing: .5px; }
.build-stamp { position: fixed; left: 18px; bottom: 14px; z-index: 41; color: rgba(20,24,31,.32); font-size: 10px; letter-spacing: 1px; }

/* ============ HUD (minimal) ============ */
#hud { position: fixed; inset: 0; z-index: 20; pointer-events: none; transition: opacity .4s var(--ease); }
#hud.hidden { display: none; }
/* corner pods slide up (no positioning transform to clobber); centred pods fade only */
.hud-cog, .hud-env, .hud-status-pod, .hud-nitro-pod { animation: hudIn .5s var(--ease) both; }
.hud-route, .hud-speed-pod { animation: hudFade .5s var(--ease) both; }
@keyframes hudIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@keyframes hudFade { from { opacity: 0; } to { opacity: 1; } }

.hud-cog { pointer-events: auto; position: absolute; top: calc(14px + env(safe-area-inset-top)); left: calc(16px + env(safe-area-inset-left));
  width: 42px; height: 42px; border-radius: 13px; display: grid; place-items: center; cursor: pointer; color: var(--text);
  background: var(--glass); border: 1px solid var(--line); backdrop-filter: blur(12px); transition: border-color .16s var(--ease), transform .16s; }
.hud-cog:hover { border-color: rgba(123,231,214,.6); transform: rotate(35deg); }

.hud-route { position: absolute; top: calc(16px + env(safe-area-inset-top)); left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; gap: 9px; padding: 8px 16px; border-radius: 999px;
  background: var(--glass); border: 1px solid var(--line); backdrop-filter: blur(12px);
  font-size: 12px; letter-spacing: 2px; text-transform: uppercase; color: var(--text); }
.hud-route .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--aqua); box-shadow: 0 0 8px var(--aqua); }

.hud-env { position: absolute; top: calc(16px + env(safe-area-inset-top)); right: calc(16px + env(safe-area-inset-right));
  display: flex; align-items: center; gap: 9px; padding: 8px 15px; border-radius: 999px;
  background: var(--glass); border: 1px solid var(--line); backdrop-filter: blur(12px); font-size: 12px; color: var(--muted); }
.hud-env .wx { color: var(--amber); }
.hud-env #hud-time { color: var(--text); letter-spacing: 1px; }
.hud-env .sep { width: 1px; height: 14px; background: var(--line); }

/* bottom-left: vehicle status */
.hud-status-pod { position: absolute; left: calc(18px + env(safe-area-inset-left)); bottom: calc(22px + env(safe-area-inset-bottom));
  display: flex; align-items: center; gap: 14px; padding: 11px 16px; border-radius: var(--r);
  background: var(--glass); border: 1px solid var(--line); backdrop-filter: blur(12px); }
.pod-cell { display: flex; flex-direction: column; gap: 2px; min-width: 30px; }
.pod-cell small { color: var(--muted); font-size: 9px; letter-spacing: 2px; }
.pod-cell b { font-size: 20px; font-weight: 600; letter-spacing: .5px; line-height: 1; }
.pod-cell b i { font-style: normal; font-size: 10px; color: var(--muted); margin-left: 3px; letter-spacing: .5px; }
.pod-div { width: 1px; height: 26px; background: var(--line-soft); }
.pod-lamp { color: #4b556b; transition: color .3s var(--ease); }
.pod-lamp.on { color: var(--amber); filter: drop-shadow(0 0 6px rgba(255,206,138,.6)); }

/* bottom-centre: speed */
.hud-speed-pod { position: absolute; left: 50%; transform: translateX(-50%); bottom: calc(24px + env(safe-area-inset-bottom));
  display: flex; flex-direction: column; align-items: center; gap: 9px; }
.speed-row { display: flex; align-items: baseline; gap: 8px; text-shadow: 0 2px 18px rgba(0,0,0,.6); }
.speed-row #hud-speed { font-size: 64px; font-weight: 200; line-height: .9; letter-spacing: 1px; }
.speed-row small { font-size: 12px; color: var(--muted); letter-spacing: 3px; text-transform: uppercase; }
.speed-bar { width: 180px; height: 3px; border-radius: 3px; background: rgba(255,255,255,.10); overflow: hidden; }
.speed-bar i { display: block; height: 100%; width: 0%; border-radius: 3px;
  background: linear-gradient(90deg, var(--aqua), var(--lav) 70%, var(--amber)); transition: width .12s linear; box-shadow: 0 0 10px rgba(123,231,214,.4); }

/* bottom-right: nitro (vertical meter) */
.hud-nitro-pod { position: absolute; right: calc(22px + env(safe-area-inset-right)); bottom: calc(22px + env(safe-area-inset-bottom));
  display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 12px 12px 14px; border-radius: var(--r);
  background: var(--glass); border: 1px solid var(--line); backdrop-filter: blur(12px); }
.hud-nitro-pod small { color: var(--muted); font-size: 9px; letter-spacing: 2px; }
.nitro-meter { width: 8px; height: 64px; border-radius: 5px; background: rgba(255,255,255,.10); overflow: hidden; display: flex; align-items: flex-end; }
.nitro-meter i { display: block; width: 100%; height: 0%; border-radius: 5px; background: var(--aqua); transition: height .12s linear, background .3s var(--ease); }

.hud-fps { display: none; }   /* dev counter — hidden in the minimal HUD */
.hud-toast { position: absolute; top: calc(70px + env(safe-area-inset-top)); left: 50%; transform: translate(-50%, -6px);
  padding: 9px 18px; border-radius: 999px; background: var(--glass-strong); border: 1px solid var(--line); backdrop-filter: blur(12px);
  color: var(--aqua); font-size: 12px; letter-spacing: 1px; opacity: 0; transition: opacity .3s var(--ease), transform .3s var(--ease); }
.hud-toast.show { opacity: 1; transform: translate(-50%, 0); }

/* speed-blur vignette (JS-driven) */
#speed-blur { position: fixed; inset: 0; z-index: 15; pointer-events: none; opacity: 0;
  background: radial-gradient(ellipse 60% 55% at 50% 50%, transparent 40%, rgba(0,0,0,0) 55%, rgba(7,10,17,0.85) 100%); transition: opacity .12s linear; }
#debug-panel { position: fixed; top: 64px; left: 14px; z-index: 30; margin: 0; font: 11px/1.5 "SF Mono", Menlo, Consolas, monospace;
  color: #9effd9; background: rgba(6,10,18,.78); border: 1px solid rgba(123,231,214,.3); border-radius: 8px; padding: 8px 12px; pointer-events: none; white-space: pre; }

/* ============ TOUCH CONTROLS ============ */
.touch-layer { position: absolute; inset: 0; pointer-events: none; }
.touch-steer { position: absolute; left: 16px; bottom: 96px; display: flex; gap: 12px; }
.touch-pedals { position: absolute; right: 16px; bottom: 96px; display: flex; flex-direction: column; align-items: flex-end; gap: 10px; }
.touch-aux { display: flex; gap: 10px; } .touch-main { display: flex; gap: 12px; }
.tbtn { pointer-events: auto; width: 74px; height: 74px; border-radius: 50%; font-size: 20px; font-weight: 700;
  background: var(--glass); border: 1px solid var(--line); color: var(--text); backdrop-filter: blur(10px); touch-action: none; cursor: pointer; }
.tbtn:active { background: rgba(123,231,214,.28); }
.tbtn-gas { background: rgba(123,231,214,.18); border-color: rgba(123,231,214,.5); font-size: 13px; }
.tbtn-brake { background: rgba(255,206,138,.16); border-color: rgba(255,206,138,.5); font-size: 13px; }
.tbtn-jump { width: 58px; height: 58px; font-size: 11px; background: rgba(170,180,255,.18); border-color: rgba(170,180,255,.5); }
.tbtn-boost { width: 58px; height: 58px; font-size: 11px; background: rgba(170,180,255,.22); border-color: var(--lav); }
.tbtn-hand { width: 86px; height: 50px; border-radius: 16px; font-size: 11px; background: rgba(255,206,138,.16); border-color: rgba(255,206,138,.5); align-self: flex-end; }
@media (hover: hover) and (pointer: fine) { .touch-layer { display: none; } }

/* ============ PANELS (settings + about) ============ */
.panel { position: fixed; z-index: 50; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: min(420px, 94vw); max-height: 88vh; display: flex; flex-direction: column;
  background: var(--glass-strong); border: 1px solid var(--line); border-radius: var(--r-lg);
  box-shadow: 0 30px 80px rgba(0,0,0,.6); backdrop-filter: blur(20px);
  animation: panelIn .32s var(--ease) both; }
@keyframes panelIn { from { opacity: 0; transform: translate(-50%, -46%) scale(.98); } to { opacity: 1; transform: translate(-50%, -50%) scale(1); } }
.panel-head { display: flex; align-items: center; justify-content: space-between; padding: 20px 22px 8px; }
.panel-head h3 { font-size: 19px; font-weight: 600; letter-spacing: .3px; }
.panel .x { background: none; border: none; color: var(--muted); font-size: 16px; cursor: pointer; width: 30px; height: 30px; border-radius: 8px; }
.panel .x:hover { color: var(--text); background: var(--line-soft); }
.panel-scroll { overflow-y: auto; padding: 6px 22px; }
.set-group { padding: 12px 0; border-top: 1px solid var(--line-soft); }
.set-group:first-child { border-top: none; }
.set-label { color: var(--aqua); text-transform: uppercase; letter-spacing: 2px; font-size: 10px; margin-bottom: 8px; opacity: .85; }
.panel label { display: block; margin: 11px 0; font-size: 13px; color: var(--muted); }
.panel label.row { display: flex; align-items: center; gap: 10px; }
.panel select, .panel input[type="range"] { width: 100%; margin-top: 7px; }
.panel select { background: var(--ink-2); color: var(--text); border: 1px solid var(--line); border-radius: var(--r-sm); padding: 10px; font-family: inherit; }
.panel input[type="range"] { -webkit-appearance: none; appearance: none; height: 4px; border-radius: 3px; background: rgba(255,255,255,.12); }
.panel input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 16px; height: 16px; border-radius: 50%; background: var(--aqua); box-shadow: 0 0 10px rgba(123,231,214,.5); cursor: pointer; }
.panel input[type="range"]::-moz-range-thumb { width: 16px; height: 16px; border: none; border-radius: 50%; background: var(--aqua); cursor: pointer; }
.panel input[type="checkbox"] { accent-color: var(--aqua); width: 18px; height: 18px; }
.val { color: var(--aqua); font-weight: 600; float: right; }
.panel-actions { display: flex; gap: 8px; padding: 14px 22px 16px; flex-wrap: wrap; border-top: 1px solid var(--line-soft); }
.panel-actions button { flex: 1; min-width: 96px; padding: 12px; border-radius: var(--r-sm); border: 1px solid var(--line); cursor: pointer; background: rgba(255,255,255,.04); color: var(--text); font-size: 13px; font-weight: 500; transition: border-color .16s var(--ease); }
.panel-actions button:hover { border-color: rgba(123,231,214,.6); }
.panel-actions .primary { background: linear-gradient(100deg, var(--aqua), var(--lav)); color: #04140f; border: none; font-weight: 600; }
.hint { padding: 0 22px 18px; font-size: 11px; color: var(--muted); line-height: 1.7; }
.hint b { color: var(--text); }

/* About / Legal */
.about-scroll { padding-bottom: 8px; }
.about-lead { color: var(--text); font-size: 14px; line-height: 1.6; margin: 6px 0 14px; }
.about-brand { display: flex; flex-direction: column; gap: 4px; padding: 12px 0 16px; }
.about-brand small { color: var(--muted); font-size: 11px; letter-spacing: .5px; }
.legal { color: rgba(139,148,168,.85); font-size: 11.5px; line-height: 1.65; margin: 8px 0; }

/* ============ OVERLAY ============ */
.overlay-msg { position: fixed; inset: 0; z-index: 60; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px;
  font-size: 32px; font-weight: 600; letter-spacing: 3px; color: #fff; background: rgba(4,8,16,.7); backdrop-filter: blur(3px); text-align: center; padding: 20px; }
.overlay-msg small { font-size: 14px; font-weight: 400; color: var(--muted); letter-spacing: 1px; }

/* ============ RESPONSIVE ============ */
@media (max-width: 760px) {
  .selectors { gap: 16px; }
  .hud-fps { display: none; }
}
@media (max-width: 560px) {
  .hud-status-pod { gap: 10px; padding: 9px 12px; }
  .pod-cell b { font-size: 17px; }
  .speed-row #hud-speed { font-size: 48px; }
  .speed-bar { width: 140px; }
  .hud-route { font-size: 10px; letter-spacing: 1px; padding: 7px 12px; max-width: 44vw; overflow: hidden; white-space: nowrap; }
  .menu-top { padding-top: 12px; }
}