:root {
  color-scheme: dark;
  --ink: #162033;
  --deep: #0b1020;
  --blue: #3e63dd;
  --cyan: #55d6e9;
  --violet: #8d72e1;
  --gold: #f2b84b;
  --coral: #ef6b73;
  --paper: #f5f1e8;
}

* { box-sizing: border-box; }
html, body { -webkit-tap-highlight-color: transparent; }
[hidden] { display: none !important; }   /* .menu/.rotate/.hud/.touch/.solved đặt display:grid/flex bằng class → thuộc tính hidden của UA thua; luật này thắng. Mất ở lần viết lại CSS 08/09 (regex xoá khối desktop nuốt luôn) — MacBook bắt lại bằng computed display; từ nay đo overlay bằng getComputedStyle, không bằng .hidden */

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 18% 0%, rgba(62, 99, 221, .22), transparent 36rem),
    radial-gradient(circle at 85% 90%, rgba(141, 114, 225, .17), transparent 34rem),
    var(--deep);
  color: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--cyan);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .22em;
}

kbd {
  min-width: 24px;
  display: inline-block;
  margin-right: 3px;
  padding: 3px 6px;
  border: 1px solid #52617e;
  border-bottom-width: 2px;
  border-radius: 5px;
  background: #1a253b;
  color: #fff;
  text-align: center;
  font: 700 11px/1.2 inherit;
}

.game-wrap {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(85, 214, 233, .28);
  border-radius: 18px;
  background: #121a2b;
  box-shadow: 0 22px 70px rgba(0, 0, 0, .42), inset 0 0 0 1px rgba(255, 255, 255, .03);
}

canvas {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  touch-action: none;
}

.loading {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: #11182a;
  color: var(--cyan);
  font-weight: 700;
  letter-spacing: .05em;
  transition: opacity .25s;
}

.loading.hidden { opacity: 0; pointer-events: none; }


.shell { width: 100%; height: 100%; padding: 0; margin: 0; }
.game-wrap {
  position: absolute; inset: 0; border: 0; border-radius: 0; box-shadow: none; background: var(--deep);
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}
canvas { position: absolute; width: auto; height: auto; aspect-ratio: auto; }

/* HUD (DOM) */
.hud { position: absolute; inset: 0; pointer-events: none; font-family: inherit; }
.hud-left { position: absolute; left: calc(env(safe-area-inset-left) + 10px); top: calc(env(safe-area-inset-top) + 8px);
  padding: 8px 12px; border-radius: 10px; background: rgba(11,16,32,.72); border: 1px solid rgba(85,214,233,.28); max-width: 46vw; }
.hud-room { color: var(--cyan); font-size: 11px; font-weight: 800; letter-spacing: .12em; }
.hud-name { color: var(--paper); font-size: 15px; font-weight: 900; line-height: 1.15; margin-top: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.hud-rec { display: flex; align-items: center; gap: 8px; margin-top: 6px; }
.hud-bar { width: 120px; height: 6px; background: #222d45; border-radius: 3px; overflow: hidden; }
.hud-bar i { display: block; height: 100%; width: 0; background: var(--cyan); }
.hud-bar i.hot { background: var(--coral); }
.hud-rec span { color: #aeb8ce; font-size: 11px; font-weight: 700; min-width: 3.2em; }
.hud-right { position: absolute; right: calc(env(safe-area-inset-right) + 64px); top: calc(env(safe-area-inset-top) + 8px); text-align: right;
  padding: 8px 12px; border-radius: 10px; background: rgba(11,16,32,.72); border: 1px solid rgba(85,214,233,.18); }
.hud-loop { color: var(--paper); font-size: 13px; font-weight: 800; }
.hud-echo { color: #aeb8ce; font-size: 11px; font-weight: 700; margin-top: 2px; }
.hud-echo.warn { color: var(--coral); }
/* Badge Review mode (16-tap version bật): giữa-TRÊN, amber, để ảnh chụp phân biệt bản review với player.
   HUD là DOM (không canvas) từ v0.4 — badge này là DOM, khác dòng canvas chết trong drawHud(). */
.hud-review { position: absolute; left: 50%; top: calc(env(safe-area-inset-top) + 8px); transform: translateX(-50%);
  color: #f2b84b; font-size: 12px; font-weight: 900; letter-spacing: .1em; white-space: nowrap;
  padding: 3px 11px; border-radius: 999px; background: rgba(11,16,32,.85); border: 1px solid rgba(242,184,75,.55); }
/* Thẻ nhân vật Keeper (Step 1): giữa-trên sân, dưới hai hộp HUD; max-width đặt bằng JS = 0.6×bề rộng canvas
   (≤60% sân + né hai cột chạm). z-index dưới .rotate(30)/.menu(40), trên canvas/HUD. Chạm để tắt. */
.cast-card { position: absolute; left: 50%; top: calc(env(safe-area-inset-top) + 78px); transform: translateX(-50%);
  box-sizing: border-box; background: rgba(11,16,32,.92); border: 1px solid rgba(120,150,200,.35); border-radius: 12px;
  padding: 9px 16px; text-align: center; z-index: 20; pointer-events: auto; cursor: pointer;
  box-shadow: 0 6px 24px rgba(0,0,0,.45); transition: opacity .18s ease; }
/* Trong lúc thẻ Keeper hiện: ẩn hộp hint (Mini để hint top+88px, đè thẻ) — option 2 "gọn mắt".
   Tự-chứa qua class, KHÔNG đụng render hint (lane Mini): class do cast JS bật/tắt. */
body.cast-active .hud-hint { display: none !important; }
.cast-portrait { display: block; width: 56px; height: 56px; margin: 0 auto 6px; border-radius: 12px; object-fit: cover; }
.cast-name { display: block; color: var(--cyan); font-size: 12px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.cast-line { display: block; color: var(--paper); font-size: 14px; font-weight: 600; line-height: 1.3; margin-top: 3px; }
.hud-hint { position: absolute; left: 50%; transform: translateX(-50%); top: calc(env(safe-area-inset-top) + 88px);   /* Nick 08/09 08:38Z: hint ở đáy che Ari/plate → lên đỉnh, dưới hai hộp HUD */
  max-width: min(72vw, 640px); padding: 8px 14px; border-radius: 10px; background: rgba(11,16,32,.8);
  border: 1px solid rgba(143,232,244,.35); color: #8fe8f4; font-size: 13px; font-weight: 600; line-height: 1.35; text-align: center; }

/* Cảm ứng v0.4.1: hai CỘT hai bên sân (biến --ctl), sân ở giữa (fitCanvas trừ hai cột). Cột chỉ hiện trên máy cảm ứng. */
:root { --ctl: clamp(96px, 14vw, 150px); }
@media (max-width: 740px) { :root { --ctl: clamp(80px, 13vw, 150px); } }   /* SE 2 (667×375): cột 80 để sân còn 507 px */
body:not(.mobile) { --ctl: 0px; }
.touch { position: absolute; inset: 0; pointer-events: none; }
.zone { position: absolute; top: 0; bottom: 0; width: calc(var(--ctl) + 40px); pointer-events: auto; touch-action: none; -webkit-user-select: none; user-select: none; }
.zone-move { left: 0; padding-left: env(safe-area-inset-left); }
.zone-act { right: 0; padding-right: env(safe-area-inset-right); }
.pad { position: absolute; left: env(safe-area-inset-left); width: var(--ctl); top: 52%; transform: translateY(-50%); display: flex; align-items: center; justify-content: center; gap: 8px; }
.zone-act .pad { left: auto; right: env(safe-area-inset-right); flex-direction: column; gap: 14px; }
.hint-arrow, .hint-jump { width: 46px; height: 46px; border-radius: 50%; flex: 0 0 auto;
  display: grid; place-items: center; border: 2px solid rgba(255,255,255,.22); background: rgba(23,35,58,.55); color: rgba(255,255,255,.8);
  font: 900 20px/1 inherit; pointer-events: none; transition: background .08s, border-color .08s; }
.hint-jump { color: var(--gold); font-size: 26px; width: 64px; height: 64px; }
.hint-arrow.on, .hint-jump.on { background: rgba(85,214,233,.4); border-color: var(--cyan); color: #fff; }
.tbtn {
  border: 2px solid rgba(255,255,255,.28); background: rgba(23,35,58,.72); color: #fff;
  font: 900 13px/1 inherit; touch-action: none; -webkit-user-select: none; user-select: none; pointer-events: auto;
  box-shadow: 0 6px 18px rgba(0,0,0,.35);
}
.tbtn:active, .tbtn.down { background: rgba(85,214,233,.35); border-color: var(--cyan); }
.tbtn.echo { width: 64px; height: 48px; border-radius: 14px; color: var(--cyan); letter-spacing: .08em; }
.tbtn.pause { position: absolute; top: calc(env(safe-area-inset-top) + 8px); right: calc(env(safe-area-inset-right) + 10px);
  width: 44px; height: 44px; font-size: 18px; border-radius: 12px; }
@media (max-width: 740px) {
  .pad { gap: 4px; } .hint-arrow { width: 36px; height: 36px; font-size: 16px; } .hint-jump { width: 52px; height: 52px; font-size: 22px; }
  .tbtn.echo { width: 56px; height: 40px; font-size: 11px; } .zone-act .pad { gap: 10px; }
  .hud-left { max-width: 40vw; padding: 6px 9px; } .hud-name { font-size: 13px; } .hud-bar { width: 84px; }
}
@media (min-width: 900px) and (min-height: 600px) {
  .hint-arrow { width: 60px; height: 60px; font-size: 26px; } .hint-jump { width: 84px; height: 84px; font-size: 32px; }
  .tbtn.echo { width: 84px; height: 60px; font-size: 16px; } .tbtn.pause { width: 48px; height: 48px; }
}

/* Nút sau khi giải phòng */
.solved { position: absolute; left: 50%; transform: translateX(-50%); bottom: calc(env(safe-area-inset-bottom) + 18%); display: flex; gap: 10px; }
.solved button, .menu button {
  min-width: 128px; padding: 12px 18px; border-radius: 12px; border: 1px solid #425270; background: #17233a; color: #fff;
  font: 800 15px/1.2 inherit; touch-action: manipulation;
}
.solved button.primary, .menu button.primary { background: var(--cyan); color: #06121a; border-color: transparent; }
.menu button.danger { border-color: rgba(239,107,115,.6); color: var(--coral); }

/* Xoay ngang */
.rotate { position: absolute; inset: 0; display: grid; place-items: center; background: rgba(7,10,20,.94); color: var(--cyan); font-weight: 800; font-size: 18px; z-index: 30; }

/* Menu app */
.menu { position: fixed; inset: 0; z-index: 40; display: grid; place-items: center; background: rgba(7,10,20,.88); backdrop-filter: blur(6px);
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left); }
.menu .panel { width: min(92vw, 420px); max-height: 92dvh; overflow: auto; padding: 22px 22px 18px; border-radius: 18px;
  background: #121a2b; border: 1px solid rgba(85,214,233,.28); box-shadow: 0 22px 70px rgba(0,0,0,.42); text-align: center; }
.menu .panel.wide { width: min(94vw, 720px); }
.menu h2 { margin: 4px 0 6px; font-size: clamp(26px, 5vw, 40px); letter-spacing: -.04em; line-height: 1; }
.menu .sub { margin: 0 0 14px; color: #bfc8dd; font-size: 13px; line-height: 1.45; }
.menu .stack { display: grid; gap: 10px; }
.menu .row { display: flex; gap: 10px; justify-content: center; margin-top: 12px; }
.menu .version { margin: 14px 0 0; color: #6f7c96; font-size: 11px; letter-spacing: .06em; }
.rooms { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; }
.rooms button { min-width: 0; padding: 10px 4px; font-size: 13px; }
.rooms button.locked { opacity: .35; }
.rooms button.done { border-color: var(--gold); color: var(--gold); }
.rooms button.current { border-color: var(--cyan); }
@media (max-width: 520px) { .rooms { grid-template-columns: repeat(5, 1fr); } .rooms button { padding: 8px 2px; font-size: 12px; } }