/* ============================================================
   QC ACADEMY  ·  Design tokens
   Identity: "Legal ink & brass" — the gravitas of statute books
   meeting the warmth of a learning app. Deep ink navy carries
   authority; brass/gold is the reward currency (XP, streaks,
   crests). Spent boldly only on achievement; everything else
   stays quiet and disciplined.
   ============================================================ */
:root{
  --ink:#1a2238;          /* primary dark — legal navy */
  --ink-2:#27304d;        /* raised surfaces in dark areas */
  --ink-soft:#4a5578;     /* muted ink text */
  --brass:#c79a3e;        /* signature accent — reward gold */
  --brass-deep:#a87d28;
  --brass-glow:#f3d488;
  --paper:#ffffff;        /* card surface */
  --canvas:#f5f3ee;       /* app background — warm, paper-like, not cream-serif */
  --canvas-2:#ece9e1;
  --line:#e3e0d7;         /* hairlines */
  --good:#2e9e6b;         /* correct */
  --good-soft:#e4f4ec;
  --good-deep:#1f7a51;
  --bad:#d9523c;          /* wrong / hearts */
  --bad-soft:#fbe8e4;
  --txt:#1a2238;
  --txt-2:#5b6178;
  --txt-3:#8b90a3;
  --violet:#5b54b8;       /* secondary subject accent */
  --radius:18px;
  --radius-sm:12px;
  --shadow-sm:0 1px 2px rgba(26,34,56,.08), 0 2px 6px rgba(26,34,56,.06);
  --shadow-md:0 6px 20px rgba(26,34,56,.12);
  --shadow-node:0 4px 0 rgba(26,34,56,.16);
  --font-display:"Fraunces", Georgia, serif;
  --font-ui:"Plus Jakarta Sans","Noto Sans SC","Noto Sans TC","Noto Sans JP","Noto Sans KR", system-ui, -apple-system, sans-serif;
}
[data-theme="dark"]{
  --paper:#222a44;
  --canvas:#161c2e;
  --canvas-2:#1d2540;
  --line:#323b5c;
  --txt:#eef0f6;
  --txt-2:#aab0c6;
  --txt-3:#7b8199;
  --ink:#0f1422;
  --good-soft:#15352a;
  --bad-soft:#3a2420;
  --canvas-2:#1d2540;
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0;height:100%}
body{
  font-family:var(--font-ui);
  /* Matches the app canvas so widths between the 460px phone frame and the
     900px desktop breakpoint show a seamless surface instead of navy bars. */
  background:var(--canvas);
  color:var(--txt);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overscroll-behavior:none;
}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
:focus-visible{outline:3px solid var(--brass);outline-offset:2px;border-radius:6px}
@media (prefers-reduced-motion: reduce){*{animation-duration:.001ms!important;transition-duration:.001ms!important}}

/* ---------- App shell: phone frame centered on desktop ---------- */
#app{
  max-width:460px;margin:0 auto;height:100vh;height:100dvh;
  background:var(--canvas);position:relative;
  display:flex;flex-direction:column;
  box-shadow:0 0 0 1px var(--line),0 0 44px rgba(26,34,56,.08); /* hairline frame, no heavy halo */
  overflow:hidden;
}
.screen{flex:1;overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch;padding-bottom:20px;min-height:0}
.screen::-webkit-scrollbar{width:0}
.hidden{display:none!important}

/* ---------- Top status bar ---------- */
.topbar{
  position:sticky;top:0;z-index:30;
  display:flex;align-items:center;gap:10px;
  padding:14px 18px 12px;
  padding-top:max(14px, env(safe-area-inset-top));
  background:var(--canvas);
  border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:9px;margin-right:auto}
.crest{width:34px;height:34px;flex:none}
.brand-name{font-family:var(--font-display);font-weight:700;font-size:20px;letter-spacing:-.01em;color:var(--ink)}
[data-theme="dark"] .brand-name{color:var(--txt)}
.stat-pill{display:flex;align-items:center;gap:5px;font-weight:800;font-size:15px;padding:5px 4px}
.stat-pill svg{width:22px;height:22px;flex:none}
.stat-streak{color:var(--brass-deep)}
.stat-gem{color:var(--violet)}
.stat-energy{color:var(--brass-glow)}

/* ---------- Learn screen ---------- */
.subject-head{padding:4px 14px 6px}
.eyebrow{font-size:10px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--brass-deep)}
.subject-title{font-family:var(--font-display);font-size:22px;font-weight:700;line-height:1.1;margin:3px 0 2px;color:var(--ink);letter-spacing:-.01em}
[data-theme="dark"] .subject-title{color:var(--txt)}
.subject-sub{font-size:11px;color:var(--txt-2);line-height:1.35;margin-top:1px}

/* subject switcher — icon-only circles; selected expands to pill */
.subj-switch{display:flex;gap:5px;overflow-x:auto;overflow-y:hidden;padding:8px 14px 6px;scrollbar-width:none;flex-shrink:0}
.subj-switch::-webkit-scrollbar{display:none}
.subj-chip{
  flex:none;display:flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:50%;
  font-weight:700;font-size:11px;
  background:var(--paper);color:var(--txt-2);border:1.5px solid var(--line);
  white-space:nowrap;transition:background .15s,border-color .15s,color .15s,border-radius .15s,padding .15s,width .15s;
  overflow:hidden;
}
.subj-chip .ic{font-size:16px;line-height:1;flex-shrink:0}
.chip-lbl{font-size:11px;font-weight:700;margin-left:4px}
.subj-chip[aria-selected="true"]{width:auto;border-radius:20px;padding:0 11px;background:var(--ink);color:#fff;border-color:var(--ink)}
.subj-chip.locked{opacity:.5}
.subj-chip:active{transform:scale(.93)}

/* unit banner */
.unit-banner{
  margin:10px 14px 0;padding:9px 12px;border-radius:10px;
  background:var(--ink);color:#fff;display:flex;align-items:center;gap:9px;
  position:relative;overflow:hidden;
}
.unit-banner::after{content:"";position:absolute;right:-20px;top:-20px;width:80px;height:80px;background:radial-gradient(circle,rgba(199,154,62,.25),transparent 70%)}
.ub-tag{font-size:9px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--brass-glow);opacity:.9;flex-shrink:0}
.ub-name{flex:1;font-size:13px;font-weight:700;line-height:1.2}
.ub-prog{font-size:11px;font-weight:800;color:var(--brass-glow);opacity:.85;flex-shrink:0}

/* ---------- Signature element: the winding lesson path ---------- */
.path{position:relative;padding:16px 0 8px;overflow-x:hidden}
.path-node{position:relative;display:flex;justify-content:center;margin:0 auto;padding:8px 0}
.node-btn{
  position:relative;width:60px;height:52px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--brass);box-shadow:var(--shadow-node);
  transition:transform .12s, box-shadow .12s;
}
.node-btn:active{transform:translateY(3px);box-shadow:0 1px 0 rgba(26,34,56,.16)}
.node-btn svg{width:26px;height:26px}
.node-btn.locked{background:var(--canvas-2);box-shadow:0 4px 0 var(--line)}
.node-btn.locked svg{opacity:.45}
.node-btn.done{background:var(--brass)}
.node-btn.active{background:var(--ink)}
.node-btn.active::before{
  content:"";position:absolute;inset:-5px;border-radius:50%;
  border:3px solid var(--brass);animation:pulse 2s infinite;
}
@keyframes pulse{0%{transform:scale(1);opacity:.9}70%{transform:scale(1.18);opacity:0}100%{opacity:0}}
.node-label{
  position:absolute;left:50%;transform:translateX(-50%);bottom:-4px;
  background:var(--paper);border:1.5px solid var(--line);
  font-size:10px;font-weight:800;padding:2px 8px;border-radius:999px;
  white-space:nowrap;box-shadow:var(--shadow-sm);color:var(--txt-2)
}
/* connecting dotted spine */
.path::before{
  content:"";position:absolute;left:50%;top:0;bottom:30px;width:0;
  border-left:4px dotted var(--line);transform:translateX(-50%);z-index:0
}
.path-node{z-index:1}
/* horizontal offsets give the path its winding shape */
.off-0{transform:translateX(0)}
.off-1{transform:translateX(40px)}
.off-2{transform:translateX(40px)}
.off-3{transform:translateX(0)}
.off-4{transform:translateX(-40px)}
.off-5{transform:translateX(-40px)}

.unit-trophy{display:flex;justify-content:center;padding:14px 0 24px}
.trophy-box{width:64px;height:64px;border-radius:18px;display:grid;place-items:center;background:var(--paper);border:2px solid var(--line);box-shadow:var(--shadow-sm)}
.trophy-box svg{width:32px;height:32px;opacity:.5}

/* ---------- Locked / coming-soon subject ---------- */
.empty-state{padding:60px 30px;text-align:center}
.empty-state .es-ic{font-size:46px;margin-bottom:14px}
.empty-state h3{font-family:var(--font-display);font-size:22px;margin:0 0 8px;color:var(--ink)}
[data-theme="dark"] .empty-state h3{color:var(--txt)}
.empty-state p{color:var(--txt-2);font-size:14px;line-height:1.5;margin:0 auto;max-width:280px}
.es-cta{margin-top:22px;display:inline-flex;padding:13px 24px;background:var(--brass);color:var(--ink);font-weight:800;border-radius:14px;box-shadow:0 4px 0 var(--brass-deep);font-size:14px}

/* ---------- Bottom nav — flex child so it can never be buried ---------- */
.botnav{
  flex-shrink:0;
  display:flex;background:var(--paper);border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.nav-item{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;padding:11px 0 9px;color:var(--txt-3);font-size:10px;font-weight:700}
.nav-item svg{width:25px;height:25px}
.nav-item.active{color:var(--brass-deep)}
.nav-item:active{transform:scale(.92)}

/* ---------- Lesson player (full-screen takeover) ---------- */
.lesson-view{position:absolute;inset:0;z-index:60;background:var(--canvas);display:flex;flex-direction:column}
.lesson-top{display:flex;align-items:center;gap:14px;padding:16px 18px;padding-top:max(16px,env(safe-area-inset-top))}
.x-btn{font-size:24px;color:var(--txt-3);line-height:1;width:30px;font-weight:400}
.pbar{flex:1;height:15px;background:var(--canvas-2);border-radius:999px;overflow:hidden}
.pbar > i{display:block;height:100%;width:0;background:var(--good);border-radius:999px;transition:width .4s cubic-bezier(.4,1.2,.4,1)}
.lesson-energy{display:flex;align-items:center}
.ebar{width:56px;height:7px;background:var(--canvas-2);border-radius:4px;overflow:hidden}
.ebar i{display:block;height:100%;width:100%;background:var(--brass-glow);border-radius:4px;transition:width .35s ease,background .35s ease}
.energy-drain .ebar i{background:var(--bad)}
.energy-gain .ebar i{background:var(--good)}
/* The body is a column: q-zone (question text) is pinned and only
   scrolls within itself when extremely long; a-zone (the answer
   buttons) gets the remaining space and scrolls independently — the
   prompt never leaves the screen while hunting for an option. */
.lesson-body{flex:1;display:flex;flex-direction:column;overflow:hidden;padding:8px 22px 0}
.q-zone{flex:0 1 auto;max-height:44%;overflow-y:auto;-webkit-overflow-scrolling:touch;padding-bottom:4px}
.a-zone{flex:1 1 0;min-height:0;overflow-y:auto;-webkit-overflow-scrolling:touch;padding:2px 2px 20px;
  scrollbar-width:thin}
.a-zone::after{content:'';display:block;height:6px}
.q-kicker{font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--brass-deep);margin-bottom:10px}
.q-prompt{font-family:var(--font-display);font-size:23px;line-height:1.25;font-weight:600;color:var(--ink);letter-spacing:-.01em}
[data-theme="dark"] .q-prompt{color:var(--txt)}
.q-context{margin-top:14px;padding:14px 16px;background:var(--paper);border:1.5px solid var(--line);border-left:4px solid var(--brass);border-radius:12px;font-size:14px;line-height:1.5;color:var(--txt-2)}
.q-statute{margin-top:8px;font-size:11.5px;font-weight:700;color:var(--brass-deep);letter-spacing:.02em}
.q-lookup-btn{display:inline-flex;align-items:center;gap:6px;margin-top:8px;padding:8px 14px;border-radius:11px;background:var(--canvas-2);color:var(--txt-2);font-size:12.5px;font-weight:700}
.q-lookup-btn:active{transform:scale(.97)}
.q-lookup-btn svg{width:14px;height:14px}

/* answer options */
.opts{margin-top:22px;display:flex;flex-direction:column;gap:11px}
.opt{
  display:flex;align-items:center;gap:13px;text-align:left;
  padding:15px 16px;border-radius:14px;background:var(--paper);
  border:2px solid var(--line);border-bottom-width:4px;
  font-size:15px;font-weight:600;color:var(--txt);transition:transform .1s;
}
.opt:active{transform:scale(.985)}
.opt .key{
  width:26px;height:26px;flex:none;border-radius:7px;border:2px solid var(--line);
  display:grid;place-items:center;font-size:12px;font-weight:800;color:var(--txt-3)
}
.opt[aria-pressed="true"]{border-color:var(--brass);background:#fdf8ed}
[data-theme="dark"] .opt[aria-pressed="true"]{background:#2e2a1c}
.opt[aria-pressed="true"] .key{border-color:var(--brass);background:var(--brass);color:var(--ink)}
.opt.correct{border-color:var(--good);background:var(--good-soft)}
.opt.correct .key{border-color:var(--good);background:var(--good);color:#fff}
.opt.wrong{border-color:var(--bad);background:var(--bad-soft)}
.opt.wrong .key{border-color:var(--bad);background:var(--bad);color:#fff}
.opt:disabled{opacity:1}

/* true/false big buttons */
.tf-row{margin-top:24px;display:flex;gap:12px}
.tf-btn{flex:1;padding:22px 10px;border-radius:16px;background:var(--paper);border:2px solid var(--line);border-bottom-width:4px;font-weight:800;font-size:16px;color:var(--txt)}
.tf-btn .tf-ic{display:block;font-size:26px;margin-bottom:6px}
.tf-btn[aria-pressed="true"]{border-color:var(--brass);background:#fdf8ed}
[data-theme="dark"] .tf-btn[aria-pressed="true"]{background:#2e2a1c;color:var(--txt)}
.tf-btn.correct{border-color:var(--good);background:var(--good-soft)}
.tf-btn.wrong{border-color:var(--bad);background:var(--bad-soft)}

/* matching pairs */
.match-grid{margin-top:20px;display:grid;grid-template-columns:1fr 1fr;gap:11px}
.match-col{display:flex;flex-direction:column;gap:11px}
.match-tile{padding:14px 12px;border-radius:13px;background:var(--paper);border:2px solid var(--line);border-bottom-width:4px;font-size:13.5px;font-weight:600;line-height:1.3;color:var(--txt);min-height:58px;display:flex;align-items:center}
.match-tile[aria-pressed="true"]{border-color:var(--brass);background:#fdf8ed}
[data-theme="dark"] .match-tile[aria-pressed="true"]{background:#2e2a1c;color:var(--txt)}
.match-tile.matched{border-color:var(--good);background:var(--good-soft);opacity:.65;pointer-events:none}
.match-tile.miss{animation:shake .4s}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-6px)}75%{transform:translateX(6px)}}

/* ---------- Result footer ---------- */
.result{
  position:absolute;left:0;right:0;bottom:0;z-index:70;
  padding:18px 22px;padding-bottom:max(18px,env(safe-area-inset-bottom));
  background:var(--paper);border-top:1px solid var(--line);transform:translateY(110%);
  transition:transform .3s cubic-bezier(.2,.9,.3,1.2);
}
.result.show{transform:translateY(0)}
.result.ok{background:var(--good-soft)}
.result.no{background:var(--bad-soft)}
.result-head{display:flex;align-items:center;gap:11px;margin-bottom:11px}
.result-ic{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;flex:none}
.result.ok .result-ic{background:var(--good)}
.result.no .result-ic{background:var(--bad)}
.result-ic svg{width:24px;height:24px;color:#fff}
.result-title{font-family:var(--font-display);font-weight:700;font-size:18px}
.result.ok .result-title{color:var(--good-deep)}
.result.no .result-title{color:var(--bad)}
.result-sub{font-size:13px;color:var(--txt-2);line-height:1.4}
.result.ok .result-sub{color:var(--good-deep)}
.result.no .result-sub{color:#a23c2c}

/* primary action button */
.btn{
  display:block;width:100%;padding:15px;border-radius:15px;font-weight:800;font-size:15.5px;
  letter-spacing:.02em;text-align:center;transition:transform .1s,filter .1s;
}
.btn:active{transform:translateY(2px)}
.btn-go{background:var(--good);color:#fff;box-shadow:0 4px 0 var(--good-deep)}
.btn-go:active{box-shadow:0 2px 0 var(--good-deep)}
.btn-ink{background:var(--ink);color:#fff;box-shadow:0 4px 0 #0d1424}
.btn-brass{background:var(--brass);color:var(--ink);box-shadow:0 4px 0 var(--brass-deep)}
.btn-bad{background:var(--bad);color:#fff;box-shadow:0 4px 0 #b03c29}
.btn-ghost{background:transparent;color:var(--txt-2);border:2px solid var(--line)}
.btn:disabled{opacity:.4;box-shadow:none}
.lesson-foot{padding:16px 22px;padding-bottom:max(16px,env(safe-area-inset-bottom));border-top:1px solid var(--line);background:var(--canvas)}

/* ---------- Lesson complete splash ---------- */
.complete{position:absolute;inset:0;z-index:80;background:var(--ink);color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:30px}
.complete .burst{font-size:62px;animation:pop .5s cubic-bezier(.2,1.5,.4,1)}
@keyframes pop{0%{transform:scale(0)}100%{transform:scale(1)}}
.complete h2{font-family:var(--font-display);font-size:30px;margin:14px 0 6px;color:var(--brass-glow)}
.complete .csub{color:#b9c0d8;font-size:15px;margin-bottom:26px}
.cstats{display:flex;gap:12px;margin-bottom:30px}
.cstat{background:var(--ink-2);border:1.5px solid #36406a;border-radius:16px;padding:14px 20px;min-width:96px}
.cstat .cl{font-size:11px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;opacity:.7;margin-bottom:6px}
.cstat .cv{font-family:var(--font-display);font-size:26px;font-weight:700}
.cstat.xp .cv{color:var(--brass-glow)}
.cstat.acc .cv{color:#7fd6a8}

/* ---------- Profile ---------- */
.profile-hero{padding:26px 22px 20px;text-align:center}
.avatar-wrap{position:relative;width:84px;margin:0 auto 12px}
.avatar{width:84px;height:84px;border-radius:26px;overflow:hidden;background:linear-gradient(135deg,var(--brass),var(--brass-deep));display:grid;place-items:center;font-family:var(--font-display);font-weight:700;font-size:34px;color:var(--ink);box-shadow:var(--shadow-md)}
.avatar img{width:100%;height:100%;object-fit:cover;display:block}
.avatar-edit-btn{position:absolute;right:-4px;bottom:-4px;width:30px;height:30px;border-radius:50%;background:var(--ink);color:#fff;display:grid;place-items:center;box-shadow:var(--shadow-sm);border:2.5px solid var(--canvas)}
.avatar-edit-btn svg{width:14px;height:14px}
.profile-name{font-family:var(--font-display);font-size:23px;font-weight:700;color:var(--ink)}
[data-theme="dark"] .profile-name{color:var(--txt)}
.profile-tag{font-size:13px;color:var(--txt-2);margin-top:2px}
.plan-tag{display:inline-flex;align-items:center;gap:5px;margin-top:10px;padding:5px 12px;border-radius:999px;font-size:11px;font-weight:800;letter-spacing:.04em}
.plan-free{background:var(--canvas-2);color:var(--txt-2)}
.plan-pro{background:linear-gradient(135deg,var(--brass-glow),var(--brass));color:var(--ink)}
.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:6px 18px 18px}
.stat-card{background:var(--paper);border:1.5px solid var(--line);border-radius:16px;padding:16px;display:flex;align-items:center;gap:12px}
.stat-card .sc-ic{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;flex:none}
.stat-card .sc-ic svg{width:24px;height:24px}
.sc-streak{background:#fdf1de;color:var(--brass-deep)}
.sc-xp{background:#ece9fb;color:var(--violet)}
.sc-done{background:var(--good-soft);color:var(--good-deep)}
.sc-acc{background:var(--bad-soft);color:var(--bad)}
.stat-card .sc-v{font-family:var(--font-display);font-size:22px;font-weight:700;line-height:1;color:var(--ink)}
[data-theme="dark"] .stat-card .sc-v{color:var(--txt)}
.stat-card .sc-l{font-size:11px;font-weight:700;color:var(--txt-3);margin-top:3px}

.settings{padding:6px 18px 30px}
.set-group{background:var(--paper);border:1.5px solid var(--line);border-radius:16px;overflow:hidden;margin-bottom:14px}
.set-row{display:flex;align-items:center;gap:12px;padding:15px 16px;border-bottom:1px solid var(--line)}
.set-row:last-child{border-bottom:none}
.set-row .sr-ic{width:24px;text-align:center;font-size:18px}
.set-row .sr-label{font-weight:600;font-size:14.5px}
.set-row .sr-side{margin-left:auto;color:var(--txt-3);font-weight:600;font-size:13px;display:flex;align-items:center;gap:6px}
.set-version{display:flex;align-items:center;gap:6px;justify-content:center;font-size:11.5px;color:var(--txt-3);padding:4px 0 8px;opacity:.7}
.sv-dot{opacity:.5}
.lang-select{appearance:none;background:transparent;border:none;font-family:inherit;font-weight:700;font-size:13.5px;color:var(--brass-deep);text-align:right;padding-right:18px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23c79a3e' stroke-width='3'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right center}
.switch{position:relative;width:46px;height:27px;border-radius:999px;background:var(--canvas-2);transition:background .2s;flex:none}
.switch.on{background:var(--brass)}
.switch i{position:absolute;top:3px;left:3px;width:21px;height:21px;border-radius:50%;background:#fff;transition:transform .2s;box-shadow:0 1px 3px rgba(0,0,0,.2)}
.switch.on i{transform:translateX(19px)}

/* ---------- Achievements ---------- */
.ach-grid{display:grid;grid-template-columns:1fr 1fr;gap:13px;padding:18px}
.ach-card{background:var(--paper);border:1.5px solid var(--line);border-radius:18px;padding:18px 14px;text-align:center}
.ach-card.earned{border-color:var(--brass);background:linear-gradient(180deg,#fdf8ed,var(--paper))}
[data-theme="dark"] .ach-card.earned{background:linear-gradient(180deg,#2e2a1c,var(--paper))}
.ach-medal{width:60px;height:60px;border-radius:50%;margin:0 auto 10px;display:grid;place-items:center;background:var(--canvas-2)}
.ach-card.earned .ach-medal{background:linear-gradient(135deg,var(--brass-glow),var(--brass));box-shadow:0 4px 14px rgba(199,154,62,.4)}
.ach-medal svg{width:32px;height:32px;color:var(--txt-3)}
.ach-card.earned .ach-medal svg{color:var(--ink)}
.ach-name{font-weight:800;font-size:13px;color:var(--ink)}
[data-theme="dark"] .ach-name{color:var(--txt)}
.ach-desc{font-size:11px;color:var(--txt-2);margin-top:3px;line-height:1.35}

/* ---------- Leaderboard ---------- */
.lb-list{padding:8px 18px}
.lb-row{display:flex;align-items:center;gap:13px;padding:13px 14px;border-radius:14px;margin-bottom:8px;background:var(--paper);border:1.5px solid var(--line)}
.lb-row.you{border-color:var(--brass);background:#fdf8ed}
[data-theme="dark"] .lb-row.you{background:#2e2a1c}
.lb-rank{width:28px;font-family:var(--font-display);font-weight:700;font-size:17px;text-align:center;color:var(--txt-3)}
.lb-rank.top{color:var(--brass-deep)}
.lb-av{width:38px;height:38px;border-radius:12px;overflow:hidden;display:grid;place-items:center;font-weight:800;font-size:15px;color:#fff;flex:none}
.lb-av img{width:100%;height:100%;object-fit:cover;display:block}
.lb-name{font-weight:700;font-size:14px;color:var(--ink)}
[data-theme="dark"] .lb-name{color:var(--txt)}
.lb-you-tag{font-weight:600;font-size:12px;color:var(--brass-deep)}
.lb-xp{margin-left:auto;font-weight:800;font-size:13px;color:var(--brass-deep)}

/* ---------- Modal / auth ---------- */
.modal-bg{position:absolute;inset:0;z-index:120;background:rgba(15,20,34,.55);backdrop-filter:blur(3px);display:flex;align-items:flex-end;justify-content:center;animation:fade .2s}
@keyframes fade{from{opacity:0}to{opacity:1}}
.sheet{width:100%;max-width:460px;background:var(--canvas);border-radius:26px 26px 0 0;padding:24px 22px;padding-bottom:max(24px,env(safe-area-inset-bottom));animation:slideup .3s cubic-bezier(.2,.9,.3,1.1);max-height:92%;overflow-y:auto}
@keyframes slideup{from{transform:translateY(100%)}to{transform:translateY(0)}}
.sheet-grab{width:40px;height:4px;border-radius:999px;background:var(--line);margin:0 auto 18px}
.sheet h2{font-family:var(--font-display);font-size:24px;margin:0 0 4px;color:var(--ink);text-align:center}
[data-theme="dark"] .sheet h2{color:var(--txt)}
.sheet .sheet-sub{text-align:center;color:var(--txt-2);font-size:13.5px;margin-bottom:22px;line-height:1.4}
.energy-refill-wrap{display:flex;flex-direction:column;gap:10px;margin-top:4px}
.diff-opt{display:flex;flex-direction:column;gap:3px;text-align:left;width:100%;padding:14px 16px;border-radius:14px;background:var(--paper);border:2px solid var(--line);border-bottom-width:4px;margin-top:10px}
.diff-opt:first-of-type{margin-top:0}
.diff-opt:active{transform:scale(.985)}
.diff-opt-title{font-size:15px;font-weight:800;color:var(--txt)}
.diff-opt-desc{font-size:12px;color:var(--txt-3);line-height:1.35;font-weight:500}
.diff-opt.beginner{border-color:var(--good)}
.diff-opt.intermediate{border-color:var(--brass)}
.diff-opt.expert{border-color:var(--bad)}
.sheet-need-gems{display:flex;align-items:center;justify-content:center;gap:6px;font-size:13px;color:var(--txt-2);padding:12px;background:var(--canvas-2);border-radius:12px}
.field{margin-bottom:13px}
.field label{display:block;font-size:12px;font-weight:800;color:var(--txt-2);margin-bottom:6px;letter-spacing:.02em}
.field input{width:100%;padding:14px 15px;border-radius:13px;border:2px solid var(--line);background:var(--paper);font-family:inherit;font-size:15px;color:var(--txt);font-weight:600}
.field input:focus{outline:none;border-color:var(--brass)}
.auth-err{background:var(--bad-soft);color:var(--bad);font-size:13px;font-weight:600;padding:11px 14px;border-radius:11px;margin-bottom:13px;text-align:center}
.auth-switch{text-align:center;margin-top:16px;font-size:13.5px;color:var(--txt-2)}
.auth-switch b{color:var(--brass-deep);font-weight:800}
.divider{display:flex;align-items:center;gap:12px;margin:18px 0;color:var(--txt-3);font-size:12px;font-weight:700}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:var(--line)}
.pro-row{display:flex;gap:11px;margin:6px 0 8px}
.pro-card{flex:1;border:2px solid var(--line);border-radius:16px;padding:15px 13px;text-align:center;position:relative}
.pro-card.best{border-color:var(--brass)}
.pro-card .pc-tag{position:absolute;top:-9px;left:50%;transform:translateX(-50%);background:var(--brass);color:var(--ink);font-size:9px;font-weight:800;padding:2px 9px;border-radius:999px;letter-spacing:.05em}
.pro-card .pc-name{font-size:12px;font-weight:800;color:var(--txt-2);text-transform:uppercase;letter-spacing:.04em}
.pro-card .pc-price{font-family:var(--font-display);font-size:23px;font-weight:700;color:var(--ink);margin:6px 0 2px}
[data-theme="dark"] .pro-card .pc-price{color:var(--txt)}
.pro-card .pc-per{font-size:11px;color:var(--txt-3)}

/* ---------- Onboarding ---------- */
.onb{position:absolute;inset:0;z-index:100;background:var(--ink);color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:36px 30px;padding-bottom:max(36px,env(safe-area-inset-bottom))}
.onb .crest-lg{width:96px;height:96px;margin-bottom:8px}
.onb h1{font-family:var(--font-display);font-size:38px;font-weight:700;letter-spacing:-.02em;margin:6px 0 6px}
.onb .otag{color:var(--brass-glow);font-size:14px;font-weight:700;letter-spacing:.04em;margin-bottom:4px}
.onb .odesc{color:#aeb6d0;font-size:15px;line-height:1.5;max-width:300px;margin-bottom:34px}
.onb-langs{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:30px;max-width:320px}
.onb-lang{padding:8px 14px;border-radius:999px;border:1.5px solid #39426a;font-size:13px;font-weight:700;color:#c3c9de}
.onb-lang.sel{background:var(--brass);color:var(--ink);border-color:var(--brass)}
.onb-actions{width:100%;max-width:320px;display:flex;flex-direction:column;gap:11px}
.skel{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:var(--canvas)}
.skel-spinner{width:40px;height:40px;border:3px solid var(--line);border-top-color:var(--brass);border-radius:50%;animation:skel-spin .8s linear infinite}
@keyframes skel-spin{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion: reduce){.skel-spinner{animation-duration:2.4s}}

/* ── globe language button ── */
.globe-btn{display:inline-flex;align-items:center;gap:6px;border:1.5px solid var(--line);background:var(--paper);color:var(--txt-2);border-radius:999px;padding:6px 11px;font-size:12.5px;font-weight:800}
.globe-btn svg{width:18px;height:18px}
.globe-btn span{max-width:90px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lang-list{display:flex;flex-direction:column;gap:8px}
.lang-opt{display:flex;align-items:center;justify-content:space-between;width:100%;padding:14px 16px;border-radius:13px;border:2px solid var(--line);background:var(--paper);font-size:15px;font-weight:700;color:var(--txt)}
.lang-opt svg{width:18px;height:18px;color:var(--good)}
.lang-opt.sel{border-color:var(--brass);background:var(--brass-soft,rgba(199,154,62,.1))}

/* ── login screen ── */
.login{position:absolute;inset:0;z-index:100;background:var(--ink);color:#fff;display:flex;flex-direction:column;align-items:center;overflow-y:auto;padding:0 24px 40px;padding-bottom:max(40px,env(safe-area-inset-bottom))}
.login-globe{position:absolute;top:max(16px,env(safe-area-inset-top));right:18px;border-color:#39426a;background:rgba(255,255,255,.06);color:#dfe3f1}
.login-head{display:flex;flex-direction:column;align-items:center;text-align:center;padding-top:64px}
.login-head .crest-lg{width:84px;height:84px;margin-bottom:6px}
.login h1{font-family:var(--font-display);font-size:34px;font-weight:700;letter-spacing:-.02em;margin:4px 0 4px}
.login .otag{color:var(--brass-glow);font-size:13.5px;font-weight:700;letter-spacing:.03em;margin-bottom:26px}
.login-card{width:100%;max-width:380px;background:var(--paper);color:var(--txt);border-radius:22px;padding:22px 20px;box-shadow:0 20px 50px rgba(0,0,0,.3)}
.login-card .field input{background:var(--canvas-2)}
.login-card .btn-go{margin-top:4px}
.login-card .btn-google{margin-top:6px}
.login-card .btn-ghost{margin-top:11px}
.link-btn{display:block;width:100%;text-align:center;background:none;border:none;color:var(--brass-deep);font-weight:700;font-size:13px;padding:12px 0 2px;font-family:inherit}
.btn-google{background:#fff;color:#1f2330;border:2px solid var(--line);box-shadow:0 4px 0 var(--line);display:flex;align-items:center;justify-content:center;gap:10px}
.btn-google:active{box-shadow:0 2px 0 var(--line)}
.login-foot{text-align:center;color:var(--txt-2);font-size:13.5px;margin-top:18px}
.login-foot b{color:var(--brass-deep);font-weight:800;cursor:pointer}

/* ── library ── */
.lib-list{display:flex;flex-direction:column;gap:12px;padding:4px 0 10px}
.lib-card{display:flex;align-items:center;gap:14px;width:100%;text-align:left;padding:16px;border-radius:18px;border:1.5px solid var(--line);background:var(--paper);box-shadow:var(--shadow-sm)}
.lib-card.locked{opacity:.6}
.lib-ic{font-size:26px;width:46px;height:46px;display:grid;place-items:center;background:var(--canvas-2);border-radius:13px;flex-shrink:0}
.lib-meta{display:flex;flex-direction:column;gap:3px;flex:1;min-width:0}
.lib-title{font-family:var(--font-display);font-size:17px;font-weight:700;color:var(--txt)}
.lib-sub{font-size:12.5px;color:var(--txt-2);line-height:1.35}
.lib-cta{display:inline-flex;align-items:center;gap:3px;font-size:12px;font-weight:800;color:var(--brass-deep);flex-shrink:0}
.lib-cta svg{width:15px;height:15px}.lib-cta svg.flip{transform:rotate(180deg)}

/* ── document reader ── */
.reader-view{position:absolute;inset:0;z-index:60;background:var(--canvas);display:flex;flex-direction:column}
.lesson-interstitial{position:absolute;inset:0;z-index:60;background:var(--ink);display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:36px 30px;gap:18px}
.li-mascot svg{width:96px;height:96px;animation:bob 1.8s ease-in-out infinite}
.li-line{color:#fff;font-size:16px;line-height:1.5;font-weight:600;max-width:340px;animation:popIn .4s ease both}
.li-skip{margin-top:6px;color:rgba(255,255,255,.55);font-size:12.5px;font-weight:700;padding:8px 16px;border-radius:10px}
.li-skip:active{background:rgba(255,255,255,.1)}
.reader-top{display:flex;align-items:center;gap:10px;padding:12px 14px;padding-top:max(12px,env(safe-area-inset-top));border-bottom:1px solid var(--line);background:var(--paper)}
.reader-top .x-btn{flex-shrink:0;width:38px;height:38px;border-radius:11px;border:none;background:var(--canvas-2);color:var(--txt);display:grid;place-items:center}
.reader-top .x-btn svg{width:24px;height:24px}
.reader-ttl{display:flex;flex-direction:column;line-height:1.2;min-width:0}
.reader-ttl b{font-family:var(--font-display);font-size:16px;color:var(--txt);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.reader-ttl span{font-size:11.5px;color:var(--txt-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* ── Avatar crop/filter editor ── */
.avatar-editor{position:absolute;inset:0;z-index:70;background:var(--canvas);display:flex;flex-direction:column}
.ae-body{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:22px;padding:24px}
.ae-viewport{position:relative;width:260px;height:260px;border-radius:80px;overflow:hidden;background:var(--canvas-2);box-shadow:0 0 0 4px var(--paper),0 0 0 5px var(--line);touch-action:none;cursor:grab}
.ae-viewport:active{cursor:grabbing}
.ae-viewport .mascot-wrap{position:absolute;inset:0;display:flex;align-items:center;justify-content:center}
.ae-img{position:absolute;user-select:none;pointer-events:none}
.ae-zoom{width:260px;accent-color:var(--brass)}
.ae-filters{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;max-width:320px}
.ae-filter-chip{padding:8px 16px;border-radius:999px;border:1.5px solid var(--line);background:var(--paper);font-size:13px;font-weight:700;color:var(--txt-2)}
.ae-filter-chip.sel{border-color:var(--brass);background:var(--brass);color:var(--ink)}
.reader-tools{display:flex;gap:8px;padding:10px 14px;border-bottom:1px solid var(--line);background:var(--paper)}
.search-wrap{flex:1;display:flex;align-items:center;gap:8px;background:var(--canvas-2);border-radius:11px;padding:0 12px}
.search-wrap svg{width:16px;height:16px;color:var(--txt-3);flex-shrink:0}
.search-wrap input{flex:1;border:none;background:none;padding:11px 0;font-family:inherit;font-size:14px;color:var(--txt);font-weight:600}
.search-wrap input:focus{outline:none}
.jump-wrap{display:flex;align-items:center;gap:5px;background:var(--canvas-2);border-radius:11px;padding:0 10px;flex:0 0 132px;cursor:pointer}
.jump-wrap svg{width:16px;height:16px;color:var(--txt-3);flex-shrink:0}
.jump-wrap select{flex:1;min-width:0;border:none;background:none;padding:11px 0;font-family:inherit;font-size:12.5px;color:var(--txt);font-weight:700;appearance:none;-webkit-appearance:none;cursor:pointer}
.jump-wrap select:disabled{opacity:.5;cursor:default}
.jump-wrap select:focus{outline:none}
.jump-caret{font-size:10px;color:var(--txt-3);flex-shrink:0}
.reader-body{flex:1;overflow-y:auto;padding:18px 18px 60px;-webkit-overflow-scrolling:touch}
.doc-part{font-family:var(--font-display);font-size:18px;font-weight:700;color:var(--ink);margin:26px 0 4px;padding-top:14px;border-top:2px solid var(--brass);letter-spacing:-.01em}
[data-theme="dark"] .doc-part{color:var(--brass-glow)}
.doc-sec{font-size:14.5px;line-height:1.6;color:var(--txt);margin:13px 0 4px}
.doc-sec b{color:var(--ink);font-family:var(--font-display)}
[data-theme="dark"] .doc-sec b{color:var(--brass-glow)}
.doc-p{font-size:14px;line-height:1.6;color:var(--txt-2);margin:3px 0 3px;padding-left:6px}
.doc-hit{background:var(--brass-soft,rgba(199,154,62,.18));border-radius:6px;box-shadow:0 0 0 6px var(--brass-soft,rgba(199,154,62,.18));transition:background .3s}

.toast{position:absolute;left:50%;bottom:104px;transform:translateX(-50%) translateY(20px);z-index:95;background:var(--ink);color:#fff;padding:12px 20px;border-radius:13px;font-size:13.5px;font-weight:700;box-shadow:var(--shadow-md);opacity:0;transition:.3s;pointer-events:none;display:flex;align-items:center;gap:8px;max-width:90%}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ═══════════════ MOTION & LIVELINESS ═══════════════ */
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-7px)}}
@keyframes shimmer{0%{background-position:-200% 0}100%{background-position:200% 0}}
@keyframes slideUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}
@keyframes popIn{0%{opacity:0;transform:scale(.8)}60%{transform:scale(1.05)}100%{opacity:1;transform:scale(1)}}
@keyframes bob{0%,100%{transform:translateY(0) rotate(0)}25%{transform:translateY(-2px) rotate(-3deg)}75%{transform:translateY(-2px) rotate(3deg)}}
@keyframes confettiFall{0%{transform:translateY(-10px) rotate(0);opacity:1}100%{transform:translateY(120px) rotate(360deg);opacity:0}}
@keyframes glowPulse{0%,100%{box-shadow:0 4px 0 var(--brass-deep),0 0 0 0 rgba(199,154,62,.45)}50%{box-shadow:0 4px 0 var(--brass-deep),0 0 22px 4px rgba(199,154,62,.35)}}
@keyframes eDrain{0%,100%{opacity:1}35%{opacity:.4}}
@keyframes flameFlick{0%,100%{transform:scale(1) rotate(-2deg)}50%{transform:scale(1.12) rotate(2deg)}}
@keyframes countUp{from{transform:translateY(6px);opacity:0}to{transform:translateY(0);opacity:1}}

/* idle motion */
.login-head .crest-lg,.complete-crest{animation:floaty 4s ease-in-out infinite}
.stat-streak svg{animation:flameFlick 2.2s ease-in-out infinite;transform-origin:center bottom}
.node-btn.active{animation:glowPulse 2.4s ease-in-out infinite}

/* entrance animations (staggered) */
.subject-head{animation:slideUp .4s ease both}
.path-node{animation:popIn .45s cubic-bezier(.2,.9,.3,1.2) both}
.path-node:nth-child(1){animation-delay:.02s}.path-node:nth-child(2){animation-delay:.08s}
.path-node:nth-child(3){animation-delay:.14s}.path-node:nth-child(4){animation-delay:.2s}
.path-node:nth-child(5){animation-delay:.26s}.path-node:nth-child(6){animation-delay:.32s}
.lib-card{animation:slideUp .4s ease both}
.lib-card:nth-child(1){animation-delay:.03s}.lib-card:nth-child(2){animation-delay:.09s}
.lib-card:nth-child(3){animation-delay:.15s}.lib-card:nth-child(4){animation-delay:.21s}
.lib-card:nth-child(5){animation-delay:.27s}.lib-card:nth-child(6){animation-delay:.33s}
.stat-card{animation:popIn .4s ease both}
.q-prompt,.opts,.q-statute{animation:slideUp .35s ease both}
.opts{animation-delay:.06s}
.opt{transition:transform .12s,border-color .12s,background .12s}
.opt:active{transform:scale(.98)}
.lib-card:active,.subj-chip:active{transform:scale(.97)}
.btn-google:hover,.lib-card:hover{filter:brightness(1.02)}
.complete-xp{animation:countUp .5s ease both}
.energy-drain{animation:eDrain .45s ease}

/* confetti */
.confetti{position:absolute;inset:0;pointer-events:none;z-index:80;overflow:hidden}
.confetti i{position:absolute;top:-12px;width:9px;height:9px;border-radius:2px;animation:confettiFall 1.4s ease-in forwards}

/* sound toggle pill */
.sound-row .switch{cursor:pointer}

/* ═══════════════ DESKTOP LAYOUT (≥900px) ═══════════════ */
@media (min-width:900px){
  body{background:var(--canvas)}
  #app{
    max-width:none;width:100%;height:100vh;height:100dvh;min-height:0;
    display:grid;grid-template-columns:260px 1fr;grid-template-rows:auto 1fr;
    grid-template-areas:"side top" "side main";
    border-radius:0;margin:0;overflow:hidden;
    box-shadow:none;
  }
  .topbar{grid-area:top;border-bottom:1px solid var(--line)}
  .screen{grid-area:main;padding-bottom:28px}
  .screen > div{max-width:680px;margin:0 auto;width:100%}
  /* bottom nav → left sidebar */
  .botnav{
    grid-area:side;position:relative;flex-direction:column;justify-content:flex-start;
    border-top:none;border-right:1px solid var(--line);padding:18px 12px;gap:4px;
    background:var(--canvas-2);
  }
  .botnav::before{
    content:"QC Academy";display:block;font-family:var(--font-display);
    font-weight:700;font-size:19px;color:var(--ink);padding:8px 14px 18px;letter-spacing:-.01em;
  }
  [data-theme="dark"] .botnav::before{color:var(--txt)}
  .nav-item{flex:none;flex-direction:row;justify-content:flex-start;gap:13px;
    padding:13px 16px;font-size:14.5px;border-radius:13px;width:100%}
  .nav-item svg{width:23px;height:23px}
  .nav-item.active{background:var(--paper)}
  .nav-item:hover{background:var(--paper)}
  /* takeovers fill the full-bleed app & centre their content */
  .lesson-body,.complete{max-width:620px;margin:0 auto;width:100%}
  .reader-body{padding-left:max(18px,calc(50% - 360px));padding-right:max(18px,calc(50% - 360px))}
  .login{justify-content:center}
  .login-head{padding-top:0}
  .onboarding{grid-column:1/-1;grid-row:1/-1}
  /* bottom sheets become centered dialogs */
  .modal-bg{align-items:center}
  .sheet{max-width:460px;border-radius:20px;padding:32px 30px;
    animation:popIn .25s cubic-bezier(.2,.9,.3,1.1);max-height:85vh}
  .sheet-grab{display:none}
}
/* ── Icon size utility ── */
svg.sm{width:14px;height:14px}
/* Trailing chevron / lock inside PDF rows */
.lib-pdf-row>svg{width:14px;height:14px;flex-shrink:0;color:var(--txt-3)}
/* Inline icons in small text contexts — cap any unsized SVG */
.eyebrow svg{width:12px;height:12px;vertical-align:middle}
.plan-tag svg{width:12px;height:12px}
.subj-chip svg{width:12px;height:12px;flex-shrink:0}

/* ── Mascots ── */
.mascot-wrap{display:flex;justify-content:center;padding:10px 0 2px}
.mascot-wrap svg{width:90px;height:90px;animation:floaty 4s ease-in-out infinite}
.panda-login{padding:2px 0 0}.panda-login svg{width:110px;height:110px}

/* ── Library: search bar ── */
.lib-search-wrap{padding:0 0 14px}
.lib-search-box{display:flex;align-items:center;gap:8px;background:var(--canvas-2);border:1.5px solid var(--line);border-radius:14px;padding:10px 14px;transition:border-color .15s}
.lib-search-box:focus-within{border-color:var(--brass)}
.lib-search-box>svg{width:16px;height:16px;color:var(--txt-3);flex-shrink:0}
.lib-search-input{flex:1;border:none;background:transparent;font:600 14px var(--font-body);color:var(--txt);outline:none;min-width:0}
.lib-search-input::placeholder{color:var(--txt-3);font-weight:500}
.lib-search-clear{background:none;border:none;color:var(--txt-3);cursor:pointer;font-size:13px;padding:0 4px;border-radius:6px;line-height:1.4;flex-shrink:0}
.lib-search-clear:hover{background:var(--canvas-2);color:var(--txt)}
.lib-mark{background:#fdf4dc;color:#8b5e00;border-radius:3px;padding:0 2px;font-weight:700}
[data-theme="dark"] .lib-mark{background:#3a2800;color:#f3d488}
.lib-empty{text-align:center;padding:36px 16px;color:var(--txt-3);font-size:14px;line-height:1.5}

/* ── Document reader: content-unavailable fallback ── */
.pdf-fallback{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;gap:14px;padding:32px 24px;text-align:center}
.pdf-fb-msg{font-size:14px;color:var(--txt-2);max-width:220px;line-height:1.5}

/* ── Library: grouped subjects ── */
.lib-group{display:flex;flex-direction:column;gap:0}
.lib-group + .lib-group{margin-top:12px}
.lib-card--open{border-bottom-left-radius:0;border-bottom-right-radius:0;border-bottom-color:transparent}
.lib-tag{font-size:10px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--brass-deep);margin-top:1px}
.lib-pdf-list{background:var(--paper);border:1.5px solid var(--line);border-top:none;border-radius:0 0 var(--radius-sm) var(--radius-sm);padding:4px 0 6px}
.lib-pdf-row{width:100%;display:flex;align-items:center;gap:10px;padding:11px 16px;font-size:14px;font-weight:600;color:var(--txt);border-bottom:1px solid var(--line);text-align:left}
.lib-pdf-row:last-child{border-bottom:none}
.lib-pdf-row:active{background:var(--canvas-2)}
.lib-pdf-ic svg{width:16px;height:16px;color:var(--txt-3)}
.lib-pdf-name{flex:1}

/* ── Daily goal bar ── */
/* Rendered as a bounded card: previously it had no horizontal inset, so the
   track ran edge-to-edge and looked stretched. Now it matches the 14px
   gutter used by .subject-head/.subj-switch and caps its own width so it
   never sprawls on wide screens. */
.daily-goal-bar{
  margin:2px auto 16px;width:calc(100% - 28px);max-width:520px;
  background:var(--paper);border:1.5px solid var(--line);
  border-radius:14px;padding:12px 14px;
}
.dg-label{display:flex;justify-content:space-between;font-size:12px;font-weight:700;color:var(--txt-2);margin-bottom:6px}
.dg-num{color:var(--txt-3);font-weight:600}
.dg-track{height:8px;background:var(--canvas-2);border-radius:6px;overflow:hidden}
.dg-track i{display:block;height:100%;background:var(--brass);border-radius:6px;transition:width .4s cubic-bezier(.4,0,.2,1)}
.dg-track i.done{background:var(--go)}

/* ── Skill tracker (Profile) ── */
/* Same edge-to-edge stretch bug as the daily goal bar: give it the same
   18px gutter the stat grid uses and cap the width so the mastery bars
   stay readable on wide screens. */
.skill-tracker{margin:8px auto 0;width:calc(100% - 36px);max-width:560px}
.skill-tracker-title{font-family:var(--font-display);font-size:15px;font-weight:700;color:var(--ink);margin-bottom:4px}
[data-theme="dark"] .skill-tracker-title{color:var(--txt)}
.skill-legend{display:flex;gap:14px;margin-bottom:14px}
.skill-legend span{display:flex;align-items:center;gap:5px;font-size:11px;font-weight:700;color:var(--txt-3)}
.skill-legend i{width:8px;height:8px;border-radius:50%;display:inline-block}
.skill-legend .beginner i{background:var(--good)}
.skill-legend .intermediate i{background:var(--brass)}
.skill-legend .expert i{background:var(--bad)}
.skill-row{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--line)}
.skill-row:last-child{border-bottom:none}
.skill-ic{font-size:19px;flex-shrink:0;width:28px;text-align:center}
.skill-body{flex:1;min-width:0}
.skill-name{font-size:12.5px;font-weight:700;color:var(--txt);margin-bottom:5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.skill-bars{display:flex;flex-direction:column;gap:3px}
.skill-bar{height:4px;background:var(--canvas-2);border-radius:3px;overflow:hidden}
.skill-bar i{display:block;height:100%;border-radius:3px;transition:width .4s cubic-bezier(.4,0,.2,1)}
.skill-bar.beginner i{background:var(--good)}
.skill-bar.intermediate i{background:var(--brass)}
.skill-bar.expert i{background:var(--bad)}

/* ── Tutor FAB ── */
.tutor-fab{position:fixed;bottom:80px;right:16px;display:flex;align-items:center;gap:6px;background:var(--brass);color:#fff;border:none;border-radius:24px;padding:10px 16px;font-size:13px;font-weight:700;cursor:pointer;box-shadow:0 4px 16px rgba(0,0,0,.18);z-index:50}
.tutor-fab svg{width:16px;height:16px}
.tutor-msgs{max-height:220px;overflow-y:auto;display:flex;flex-direction:column;gap:8px;padding:4px 0 8px}
.tutor-msg{padding:10px 14px;border-radius:12px;font-size:14px;line-height:1.5;max-width:90%}
.tutor-msg.user{background:var(--ink);color:#fff;align-self:flex-end}
.tutor-msg.ai{background:var(--canvas-2);color:var(--txt);align-self:flex-start}
.tutor-input-row{display:flex;gap:8px;align-items:flex-end;margin-top:8px}
.tutor-input-row textarea{flex:1;border:1.5px solid var(--line);border-radius:12px;padding:10px 12px;font:500 14px var(--font-body);color:var(--txt);background:var(--canvas-2);resize:none;min-height:44px;max-height:120px;outline:none}
.tutor-input-row textarea:focus{border-color:var(--brass)}
.tutor-input-row button{background:var(--brass);color:#fff;border:none;border-radius:12px;padding:10px 16px;font:700 14px var(--font-body);cursor:pointer;flex-shrink:0}
.tutor-unavail{font-size:14px;color:var(--txt-2);line-height:1.5;padding:12px 0 4px;text-align:center}

/* ── Certificate ── */
.cert-wrap{display:flex;justify-content:center;padding:4px 0}
.cert-border{border:2px solid var(--brass);border-radius:12px;padding:24px 20px;text-align:center;max-width:320px;background:var(--paper)}
.cert-academy{font-size:11px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--brass);margin-top:8px}
.cert-title{font-size:13px;color:var(--txt-2);margin:2px 0 12px;font-weight:600}
.cert-name{font-size:20px;font-weight:800;color:var(--txt);margin-bottom:6px}
.cert-sub{font-size:13px;color:var(--txt-2);line-height:1.5}
.cert-date{font-size:11px;color:var(--txt-3);margin-top:10px}
.cert-seal{font-size:10px;color:var(--brass-deep);margin-top:10px;letter-spacing:.05em}
.cert-btn{margin-top:10px;width:100%}
/* ── tablet band: no more dead side-bars between phone and desktop ──
   The app frame stretches edge-to-edge and every screen's content sits
   in a centered, comfortably-wide column, so 461–899px reads as a real
   layout instead of a phone UI floating between two colored bars. */
@media (min-width:461px) and (max-width:899.9px){
  #app{max-width:none;box-shadow:none}
  .screen > div{max-width:660px;margin-left:auto;margin-right:auto;width:100%}
  .lesson-top,.qtimer,.battle-host,.lesson-body,.lesson-foot{
    width:100%;max-width:660px;margin-left:auto;margin-right:auto}
  .bt-stage{height:150px}
  .topbar,.botnav{padding-left:max(18px,env(safe-area-inset-left));padding-right:max(18px,env(safe-area-inset-right))}
  .login-card{max-width:440px;margin-left:auto;margin-right:auto}
}

@media print{
  body>*:not(#app){display:none}
  .modal-bg>*:not(.sheet){display:none}
  .sheet{position:static!important;transform:none!important;box-shadow:none!important}
  .cert-wrap,.cert-border{max-width:none;border:1px solid #000}
  #certPrint,#certClose,.sheet-grab{display:none!important}
}

/* ── Onboarding ── */
.onboarding{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100svh;padding:40px 28px;text-align:center;gap:24px}
.onb-head{display:flex;flex-direction:column;align-items:center;gap:16px;max-width:320px}
.onb-ic{font-size:64px;line-height:1}
.onb-title{font-size:26px;font-weight:800;color:var(--txt);margin:0;line-height:1.2}
.onb-body{font-size:16px;color:var(--txt-2);line-height:1.6;margin:0}
.onb-dots{display:flex;gap:8px}
.onb-dot{width:8px;height:8px;border-radius:50%;background:var(--line)}
.onb-dot.active{background:var(--brass);width:20px;border-radius:4px}

/* ── v1.2.0 additions ── */

/* leaderboard rows are tappable buttons now */
button.lb-row{width:100%;text-align:left;font:inherit}
button.lb-row:active{background:var(--canvas-2)}

/* profile name + edit pencil */
.profile-name-row{display:flex;align-items:center;justify-content:center;gap:8px}
.name-edit-btn{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;
  background:var(--canvas-2);border:1.5px solid var(--line);color:var(--txt-2);font-size:13px}
.name-edit-btn:active{background:var(--paper)}

/* public profile sheet */
.pp-head{display:flex;flex-direction:column;align-items:center;gap:10px;padding:4px 0 14px}
.pp-av{width:64px;height:64px;font-size:26px}
.pp-name{margin:0;font-size:20px;text-align:center}
.pp-stats{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.pp-stat{background:var(--canvas-2);border:1.5px solid var(--line);border-radius:14px;
  padding:12px 10px;display:flex;flex-direction:column;align-items:center;gap:2px;text-align:center}
.pp-stat svg{width:20px;height:20px;color:var(--brass-deep)}
.pp-v{font-family:var(--font-display);font-size:20px;font-weight:700;color:var(--txt)}
.pp-l{font-size:10.5px;font-weight:700;color:var(--txt-3)}
.pp-loading{display:flex;flex-direction:column;align-items:center;padding:14px 0}

/* generic sheet close X (language picker, statute peek) */
.sheet{position:relative}
.sheet-x{position:absolute;top:14px;right:14px;width:32px;height:32px;border-radius:50%;
  display:grid;place-items:center;background:var(--canvas-2);border:1.5px solid var(--line);
  color:var(--txt-2);font-size:14px;font-weight:700;z-index:2}
.sheet-x:active{background:var(--paper)}

/* ── Kahoot-style question timer ── */
.qtimer{display:flex;align-items:center;gap:10px;padding:0 22px 4px}
.qt-bar{flex:1;height:7px;background:var(--canvas-2);border-radius:6px;overflow:hidden}
.qt-bar i{display:block;height:100%;width:100%;background:var(--brass);border-radius:6px;transition:width .1s linear}
.qt-num{min-width:26px;text-align:right;font-family:var(--font-display);font-weight:700;font-size:16px;color:var(--txt-2);font-variant-numeric:tabular-nums}
.qtimer.urgent .qt-bar i{background:var(--bad)}
.qtimer.urgent .qt-num{color:var(--bad);animation:qtPulse .5s ease infinite alternate}
@keyframes qtPulse{from{transform:scale(1)}to{transform:scale(1.18)}}

/* speed-bonus XP chip in the answer result */
.result-head{position:relative}
.result-xp{margin-left:auto;background:var(--brass);color:#fff;font-weight:800;font-size:13px;
  padding:5px 11px;border-radius:20px;white-space:nowrap;animation:popIn .35s cubic-bezier(.2,.9,.3,1.2) both}

/* ── statute peek sheet ── */
.peek-head{padding-right:40px;margin-bottom:10px}
.peek-ttl b{display:block;font-size:16px;color:var(--txt);line-height:1.3}
.peek-cite{display:inline-block;margin-top:3px;font-size:12px;font-weight:800;color:var(--brass-deep);letter-spacing:.03em}
.peek-body{max-height:52vh;overflow-y:auto;-webkit-overflow-scrolling:touch;
  background:var(--canvas-2);border:1.5px solid var(--line);border-radius:14px;padding:12px 14px}
.peek-body .doc-sec,.peek-body .doc-p{font-size:13.5px;line-height:1.6;color:var(--txt);margin-bottom:10px}
.peek-body .doc-sec b{color:var(--brass-deep)}
.peek-search{margin-bottom:10px}
.peek-results{min-height:80px}

/* ── lesson interstitial: read-paced progress + gentle exit ── */
.lesson-interstitial{transition:opacity .38s ease}
.lesson-interstitial.leaving{opacity:0}
.li-progress{width:min(240px,60%);height:4px;background:rgba(255,255,255,.18);border-radius:4px;overflow:hidden;margin-top:26px}
.li-progress i{display:block;height:100%;width:0;background:var(--brass);border-radius:4px;transition-property:width;transition-timing-function:linear}
.li-hint{margin-top:12px;font-size:12px;font-weight:700;letter-spacing:.05em;color:rgba(255,255,255,.55);text-transform:uppercase;animation:liHint 1.6s ease infinite alternate}
@keyframes liHint{from{opacity:.45}to{opacity:.9}}

/* ── "what do I do next" wayfinding on the learn path ── */
.path-node.current{position:relative;padding-top:38px} /* headroom so the START bubble never hides behind the sticky unit banner */
.node-start{position:absolute;top:0;left:50%;transform:translateX(-50%);z-index:3;
  background:var(--brass);color:#fff;font-family:var(--font-display);font-weight:800;
  font-size:11.5px;letter-spacing:.12em;padding:5px 13px;border-radius:20px;
  white-space:nowrap;box-shadow:0 3px 10px rgba(201,154,62,.45);
  animation:startBob 1.4s ease-in-out infinite;pointer-events:none}
.node-start::after{content:'';position:absolute;left:50%;bottom:-5px;transform:translateX(-50%);
  border:6px solid transparent;border-top-color:var(--brass);border-bottom:none}
@keyframes startBob{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(-5px)}}

.node-btn.active{animation:nodePulse 1.8s ease-out infinite}
@keyframes nodePulse{
  0%{box-shadow:0 0 0 0 rgba(201,154,62,.55)}
  70%{box-shadow:0 0 0 14px rgba(201,154,62,0)}
  100%{box-shadow:0 0 0 0 rgba(201,154,62,0)}}
@media (prefers-reduced-motion:reduce){
  .node-start{animation:none}
  .node-btn.active{animation:none;box-shadow:0 0 0 4px rgba(201,154,62,.35)}}

/* ── reset-link sent state ── */
.reset-sent-ic{font-size:42px;text-align:center;margin:4px 0 8px;animation:popIn .5s cubic-bezier(.2,1.2,.4,1) both}

/* ── password visibility toggle ── */
.pw-wrap{position:relative;display:block}
.pw-wrap input{width:100%;padding-right:46px}
.pw-eye{position:absolute;top:50%;right:6px;transform:translateY(-50%);
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:none;border:none;color:var(--txt-3);cursor:pointer}
.pw-eye svg{width:20px;height:20px}
.pw-eye:active{background:var(--canvas-2);color:var(--txt-2)}
[data-theme="dark"] .pw-eye:active{background:rgba(255,255,255,.08)}

/* ── hearts (lives) ── */
.hearts{display:inline-flex;align-items:center;gap:3px;vertical-align:middle}
.heart{width:17px;height:17px}
.heart.full path{fill:#e0575b;stroke:#b93a3f;stroke-width:1.4}
.heart.empty path{fill:none;stroke:var(--txt-3);stroke-width:1.8;opacity:.55}
.lesson-energy .heart{width:20px;height:20px}
.energy-drain .heart.full:last-of-type,.energy-drain .hearts{animation:heartHit .5s ease}
@keyframes heartHit{0%,100%{transform:scale(1)}30%{transform:scale(1.25) rotate(-6deg)}60%{transform:scale(.92)}}
.stat-energy{padding-top:4px;padding-bottom:4px}
.brand{background:none;border:none;padding:0;font:inherit;display:flex;align-items:center;gap:8px;cursor:pointer}
.brand:active{opacity:.75}

/* ── ⚡ energy pips (global, header) — visually distinct from ♥ hearts ── */
.epips{display:inline-flex;align-items:center;gap:2px;vertical-align:middle}
.epip{width:16px;height:16px}
.epip.full path{fill:#e9a83a;stroke:#b47a1c;stroke-width:1.3}
.epip.empty path{fill:none;stroke:var(--txt-3);stroke-width:1.8;opacity:.55}

/* hero hearts inside the battle stage */
.bt-hearts{display:flex;justify-content:center;gap:2px;margin-bottom:3px}
.bth{width:13px;height:13px;filter:drop-shadow(0 1px 1px rgba(0,0,0,.45))}
.bth.full path{fill:#e0575b;stroke:#7e2a2e;stroke-width:1.6}
.bth.empty path{fill:rgba(0,0,0,.35);stroke:rgba(255,255,255,.55);stroke-width:1.6}
.bt-hearts.bth-hit{animation:heartHit .5s ease}

/* −1 ⚡ line on the defeat splash */
.fail-energy{display:flex;align-items:center;justify-content:center;gap:8px;
  margin:2px 0 8px;font-family:var(--font-display);font-weight:800;font-size:16px;color:var(--bad)}

/* ═══════════ v1.3.0 · Battle stage & subject themes ═══════════ */

/* per-subject theme hooks */
.lesson-view{--theme-a:var(--brass);--bt-sky:linear-gradient(180deg,#20294a,#38406b)}
.lesson-view[data-subj="contract"]{--theme-a:#b3742f;
  --bt-sky:linear-gradient(180deg,#3d2a20,#6b4a2c 70%,#8a6a3c)}
.lesson-view[data-subj="company"]{--theme-a:#5b54b8;
  --bt-sky:linear-gradient(180deg,#232645,#3b3f63 70%,#565d8f)}
.lesson-view .qt-bar i{background:var(--theme-a)}
.lesson-view .qtimer.urgent .qt-bar i{background:var(--bad)}
.lesson-view .pbar > i{background:var(--good)}

/* stage */
.battle-host{padding:0 14px 6px}
.bt-stage{position:relative;height:132px;border-radius:16px;overflow:hidden;
  background:var(--bt-sky);border:1.5px solid rgba(0,0,0,.12);
  display:flex;align-items:flex-end;justify-content:space-between;padding:8px 10px 4px}
.bt-stage::after{content:'';position:absolute;left:0;right:0;bottom:0;height:22px;
  background:rgba(0,0,0,.18)}
.bt-fighter{position:relative;width:96px;z-index:1;display:flex;flex-direction:column;align-items:center}
.bt-hero-svg,.bt-enemy-svg{width:84px;height:92px;overflow:visible}
.bt-hero-g{animation:btIdle 2.6s ease-in-out infinite;transform-origin:50% 100%}
.bt-enemy-g{animation:btIdle 3.1s ease-in-out infinite reverse;transform-origin:50% 100%}
@keyframes btIdle{0%,100%{transform:translateY(0) scaleY(1)}50%{transform:translateY(-3px) scaleY(1.02)}}

/* HP bars */
.bt-hp{width:100%;margin-bottom:3px}
.bt-hp-label{font-size:9.5px;font-weight:800;color:rgba(255,255,255,.85);letter-spacing:.03em;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;text-align:center;margin-bottom:2px;
  text-shadow:0 1px 2px rgba(0,0,0,.4)}
.bt-hp-track{height:7px;background:rgba(0,0,0,.4);border-radius:6px;overflow:hidden;
  box-shadow:inset 0 1px 2px rgba(0,0,0,.4)}
.bt-hp-track i{display:block;height:100%;width:100%;border-radius:6px;transition:width .5s cubic-bezier(.3,.9,.3,1)}
.bt-hp.hero .bt-hp-track i{background:linear-gradient(180deg,#4dc98a,#2e9e6b)}
.bt-hp.enemy .bt-hp-track i{background:linear-gradient(180deg,#e0705c,#c2492f)}

/* attack / hit beats */
.bt-hero.bt-attack .bt-hero-g{animation:btLungeR .5s cubic-bezier(.3,1.4,.4,1)}
@keyframes btLungeR{0%{transform:translateX(0)}35%{transform:translateX(64px) rotate(6deg)}70%{transform:translateX(58px)}100%{transform:translateX(0)}}
.bt-hero.bt-attack .bt-gavel{animation:btSwing .5s ease}
@keyframes btSwing{0%{transform:rotate(0)}40%{transform:rotate(-52deg)}70%{transform:rotate(14deg)}100%{transform:rotate(0)}}
.bt-enemy.bt-attack-l .bt-enemy-g{animation:btLungeL .5s cubic-bezier(.3,1.4,.4,1)}
@keyframes btLungeL{0%{transform:translateX(0)}35%{transform:translateX(-64px) rotate(-6deg)}70%{transform:translateX(-58px)}100%{transform:translateX(0)}}
.bt-hit .bt-hero-g,.bt-hit .bt-enemy-g{animation:btHit .45s ease!important}
@keyframes btHit{0%,100%{transform:translateX(0);filter:none}
  20%{transform:translateX(7px) rotate(3deg);filter:brightness(2.2) saturate(.3)}
  45%{transform:translateX(-6px);filter:brightness(1.6)}
  70%{transform:translateX(4px)}}
.bt-stage.bt-flash::before{content:'';position:absolute;inset:0;background:rgba(255,255,255,.35);
  animation:btFlash .26s ease both;z-index:2;pointer-events:none}
@keyframes btFlash{from{opacity:1}to{opacity:0}}
.bt-stage.bt-shake{animation:btShake .4s ease}
@keyframes btShake{0%,100%{transform:translate(0)}20%{transform:translate(-4px,2px)}40%{transform:translate(4px,-2px)}60%{transform:translate(-3px,-1px)}80%{transform:translate(2px,1px)}}

/* entrance / KO / cheer */
.bt-enemy.bt-enter .bt-enemy-g{animation:btEnter .7s cubic-bezier(.2,1.2,.4,1) both}
@keyframes btEnter{from{transform:translateX(70px) scale(.4);opacity:0}to{transform:none;opacity:1}}
.bt-die .bt-hero-g,.bt-die .bt-enemy-g{animation:btDie .9s ease both!important}
@keyframes btDie{30%{transform:rotate(8deg)}100%{transform:translateY(46px) rotate(78deg);opacity:0}}
.bt-cheer .bt-hero-g{animation:btCheer .5s ease 2!important}
.bt-cheer-l .bt-enemy-g{animation:btCheer .5s ease 2!important}
@keyframes btCheer{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}

/* floating damage numbers */
.bt-float{position:absolute;top:16px;left:50%;transform:translateX(-50%);z-index:3;
  font-family:var(--font-display);font-weight:800;pointer-events:none;white-space:nowrap;
  animation:btFloat 1.3s cubic-bezier(.2,.8,.4,1) both}
.bt-float b{font-size:23px}
.bt-float.dmg{color:#ffd76a;text-shadow:0 2px 4px rgba(0,0,0,.5)}
.bt-float.crit{color:#ff9d5c;font-size:13px;text-shadow:0 2px 6px rgba(0,0,0,.6);
  animation:btFloatCrit 1.05s cubic-bezier(.2,.8,.4,1) both}
.bt-float.crit b{font-size:29px;margin-left:3px}
.bt-float.hurt{color:#ff8d7a;text-shadow:0 2px 4px rgba(0,0,0,.5)}
@keyframes btFloat{from{transform:translate(-50%,10px);opacity:0}25%{opacity:1}
  to{transform:translate(-50%,-34px);opacity:0}}
@keyframes btFloatCrit{from{transform:translate(-50%,12px) scale(.5);opacity:0}
  22%{transform:translate(-50%,-4px) scale(1.25);opacity:1}
  40%{transform:translate(-50%,-8px) scale(1)}
  to{transform:translate(-50%,-40px) scale(1);opacity:0}}

/* live XP tally (bottom-center of stage; only on earn-eligible runs) */
.bt-xp{position:absolute;bottom:6px;left:50%;transform:translateX(-50%);z-index:3;
  font-family:var(--font-display);font-weight:800;font-size:12.5px;color:#fff;
  background:rgba(0,0,0,.38);border:1px solid rgba(255,215,106,.5);border-radius:20px;
  padding:3px 12px;pointer-events:none;white-space:nowrap}
.bt-xp.pop{animation:btXpPop .6s cubic-bezier(.2,1.4,.4,1)}
@keyframes btXpPop{0%{transform:translateX(-50%) scale(1)}40%{transform:translateX(-50%) scale(1.3);background:rgba(201,154,62,.65)}100%{transform:translateX(-50%) scale(1)}}

/* recycled-question badge */
.q-retry{display:inline-flex;align-items:center;gap:5px;margin:0 0 8px;
  background:#fdecdf;color:#b45a1f;border:1.5px solid #eec49a;border-radius:20px;
  padding:4px 12px;font-size:11.5px;font-weight:800;letter-spacing:.03em}
.q-retry::before{content:'↻'}
[data-theme="dark"] .q-retry{background:#3d2f22;color:#f0b070;border-color:#6b4c28}

/* flawless line on the victory splash */
.cflawless{margin:2px 0 10px;font-family:var(--font-display);font-weight:800;font-size:15px;
  color:var(--brass-deep);animation:popIn .5s cubic-bezier(.2,1.2,.4,1) both}
.cflawless b{color:var(--good)}

/* ── impact FX layer ── */
.bt-fx{position:absolute;inset:0;z-index:2;pointer-events:none}
.bt-burst{position:absolute;top:34%;width:52px;height:52px;animation:btBurst .55s cubic-bezier(.2,.9,.3,1) both}
.bt-burst.at-enemy{right:11%}
.bt-burst.at-hero{left:11%}
.bt-burst.crit{width:74px;height:74px;top:28%}
.bt-burst svg{width:100%;height:100%;animation:btBurstSpin .55s ease both}
@keyframes btBurst{0%{transform:scale(.2);opacity:0}25%{transform:scale(1.15);opacity:1}
  60%{transform:scale(1);opacity:.9}100%{transform:scale(1.25);opacity:0}}
@keyframes btBurstSpin{from{transform:rotate(-40deg)}to{transform:rotate(14deg)}}
.bt-burst i{position:absolute;top:50%;left:50%;width:5px;height:5px;border-radius:50%;
  background:#ffd76a;animation:btSpark .5s ease-out both}
.bt-burst.crit i{background:#ff9d5c;width:6px;height:6px}
@keyframes btSpark{from{transform:translate(-50%,-50%) rotate(var(--a)) translateX(4px);opacity:1}
  to{transform:translate(-50%,-50%) rotate(var(--a)) translateX(var(--d));opacity:0}}

/* boss projectile: flies from the boss into the hero */
.bt-proj{position:absolute;top:44%;right:22%;width:30px;height:24px;
  animation:btProj .34s cubic-bezier(.5,0,.9,.4) both}
.bt-proj svg{width:100%;height:100%}
@keyframes btProj{from{transform:translateX(0) rotate(0);opacity:1}
  to{transform:translateX(calc(-1 * (100vw - 200px) * .42)) rotate(-300deg);opacity:1}}
@media (min-width:460px){@keyframes btProj{from{transform:translateX(0) rotate(0)}to{transform:translateX(-190px) rotate(-300deg)}}}

/* enraged boss (HP ≤ 35%): red pulse, faster idle */
.bt-enemy.bt-enraged .bt-enemy-g{animation:btIdleRage 1.1s ease-in-out infinite;
  filter:drop-shadow(0 0 7px rgba(224,80,60,.75)) saturate(1.35)}
@keyframes btIdleRage{0%,100%{transform:translateY(0) rotate(-1.5deg)}50%{transform:translateY(-4px) rotate(1.5deg)}}
.bt-enemy.bt-enraged .bt-hp-track i{animation:btHpRage .7s ease infinite alternate}
@keyframes btHpRage{from{filter:brightness(1)}to{filter:brightness(1.7)}}

/* ambient stage motes */
.bt-motes{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.bt-motes i{position:absolute;bottom:-6px;width:4px;height:4px;border-radius:50%;
  opacity:0;animation:btMote 5s linear infinite}
@keyframes btMote{0%{transform:translateY(0);opacity:0}12%{opacity:.7}
  85%{opacity:.35}100%{transform:translateY(-118px) translateX(9px);opacity:0}}

/* hero idle polish: blink + gavel glint */
.bt-eye{animation:btBlink 4.2s ease infinite}
@keyframes btBlink{0%,94%,100%{transform:scaleY(1)}96.5%{transform:scaleY(.08)}}
.bt-hero .bt-gavel{animation:btGavelSway 2.6s ease-in-out infinite;transform-origin:68px 64px}
@keyframes btGavelSway{0%,100%{transform:rotate(0)}50%{transform:rotate(-5deg)}}

/* combo badge */
.bt-combo{position:absolute;top:8px;left:50%;transform:translateX(-50%);z-index:3;
  font-family:var(--font-display);font-weight:800;font-size:14px;color:#ffd76a;
  text-shadow:0 2px 5px rgba(0,0,0,.55);letter-spacing:.04em;pointer-events:none}
.bt-combo.pop{animation:btComboPop .7s cubic-bezier(.2,1.4,.4,1)}
@keyframes btComboPop{0%{transform:translateX(-50%) scale(.4)}45%{transform:translateX(-50%) scale(1.45)}100%{transform:translateX(-50%) scale(1)}}

/* progress step pulse (bar itself already eases via transition) */
.pbar.step{animation:pbStep .55s ease}
@keyframes pbStep{0%{box-shadow:0 0 0 0 rgba(46,158,107,.55)}100%{box-shadow:0 0 0 9px rgba(46,158,107,0)}}

/* keep the question area readable now that the stage takes vertical room */
@media (max-height:700px){ .bt-stage{height:108px} .bt-hero-svg,.bt-enemy-svg{width:70px;height:78px} }

/* ── Button dim state ── */
.btn-dim{opacity:.45}