/* ==========================================================================
   ENG_PLUS design system — semantic tokens, light + dark, mobile-first.
   Class names match app.js output; theming is token-driven.
   ========================================================================== */

/* ---- LIGHT (default) ---- */
:root{
  --bg:#f4f6ff; --bg-grad:radial-gradient(1100px 560px at 100% -12%,#e9ecff 0,transparent 58%),radial-gradient(900px 480px at -8% 4%,#e2fbef 0,transparent 55%),radial-gradient(760px 520px at 60% 116%,#fff2e0 0,transparent 60%);
  --surface:#ffffff; --surface-2:#f0f3fb; --surface-3:#e6ebf6;
  --text:#151a2b; --text-muted:#5c667c; --text-faint:#939cb2;
  --border:#e8ecf6; --border-strong:#d3daea;
  --primary:#635bff; --primary-hover:#4f46e5; --on-primary:#ffffff; --primary-ink:#3a32c9;
  --primary-soft:#eef0ff; --primary-soft-border:#d8ddff; --primary-soft-text:#4a41d6;
  --accent:#16b364; --accent-hover:#0e9354; --on-accent:#ffffff; --accent-ink:#0c8a4d;
  --accent-soft:#e2f9ee; --accent-soft-border:#b3ecce; --accent-soft-text:#0f9a56;
  --gold:#f7a927; --gold-hover:#e2930f; --on-gold:#3d2a00; --gold-ink:#c9820c;
  --gold-soft:#fff6e1; --gold-soft-border:#fbe0a6; --gold-soft-text:#b06e05;
  --coral:#ff6b7d; --coral-soft:#ffe9ec;
  --warn:#c2740a; --warn-soft:#fff4de; --warn-border:#f6d590;
  --bad:#f2413b; --bad-hover:#d9291f; --bad-soft:#ffe9e7; --bad-ink:#c22219;
  --paper:#fbf7ee; --paper-text:#2b2a26; --paper-border:#e7ddc6;
  --ring:rgba(99,91,255,.4);
  --shadow-sm:0 1px 2px rgba(58,50,120,.06),0 2px 5px rgba(58,50,120,.06);
  --shadow-md:0 6px 18px rgba(58,50,120,.10),0 2px 6px rgba(58,50,120,.06);
  --shadow-lg:0 16px 40px rgba(58,50,120,.16),0 5px 12px rgba(58,50,120,.08);
  --shadow-pop:0 20px 48px rgba(40,30,90,.22);
  --r-xs:9px; --r-sm:12px; --r:16px; --r-lg:20px; --r-xl:28px; --r-pill:999px;
  --nav-h:62px;
  --font:"SF Pro Rounded",ui-rounded,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  color-scheme:light;
}

/* ---- DARK ---- */
:root[data-theme="dark"]{
  --bg:#0c1020; --bg-grad:radial-gradient(1100px 560px at 100% -12%,#1a1f3d 0,transparent 58%),radial-gradient(900px 480px at -8% 4%,#0f2a22 0,transparent 55%),radial-gradient(760px 520px at 60% 116%,#2a2210 0,transparent 60%);
  --surface:#161c2c; --surface-2:#1f2740; --surface-3:#2a3350;
  --text:#eaeefb; --text-muted:#a2adc6; --text-faint:#6b7590;
  --border:#28304a; --border-strong:#3c4666;
  --primary:#8b8dff; --primary-hover:#7a7bff; --on-primary:#0b1020; --primary-ink:#5a5be0;
  --primary-soft:#20264a; --primary-soft-border:#343d70; --primary-soft-text:#b7bbff;
  --accent:#2fd07f; --accent-hover:#22b86c; --on-accent:#05210f; --accent-ink:#1c9a5a;
  --accent-soft:#12301f; --accent-soft-border:#215038; --accent-soft-text:#63e29a;
  --gold:#fbbf3f; --gold-hover:#f0ad20; --on-gold:#2a1c00; --gold-ink:#c98f1a;
  --gold-soft:#2c2410; --gold-soft-border:#5a4a1c; --gold-soft-text:#f7cd6b;
  --coral:#ff7d8d; --coral-soft:#331c20;
  --warn:#f7c65a; --warn-soft:#2a2210; --warn-border:#5a4a1a;
  --bad:#ff6b6b; --bad-hover:#f24d4d; --bad-soft:#301818; --bad-ink:#d43f3f;
  --paper:#f3ecdb; --paper-text:#2b2a26; --paper-border:#d8cfb8;
  --ring:rgba(139,141,255,.5);
  --shadow-sm:0 1px 2px rgba(0,0,0,.4);
  --shadow-md:0 8px 22px rgba(0,0,0,.5);
  --shadow-lg:0 18px 44px rgba(0,0,0,.58);
  --shadow-pop:0 22px 50px rgba(0,0,0,.64);
  color-scheme:dark;
}
/* follow OS preference until the user explicitly picks a theme */
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#0c1020; --bg-grad:radial-gradient(1100px 560px at 100% -12%,#1a1f3d 0,transparent 58%),radial-gradient(900px 480px at -8% 4%,#0f2a22 0,transparent 55%),radial-gradient(760px 520px at 60% 116%,#2a2210 0,transparent 60%);
    --surface:#161c2c; --surface-2:#1f2740; --surface-3:#2a3350;
    --text:#eaeefb; --text-muted:#a2adc6; --text-faint:#6b7590;
    --border:#28304a; --border-strong:#3c4666;
    --primary:#8b8dff; --primary-hover:#7a7bff; --on-primary:#0b1020; --primary-ink:#5a5be0;
    --primary-soft:#20264a; --primary-soft-border:#343d70; --primary-soft-text:#b7bbff;
    --accent:#2fd07f; --accent-hover:#22b86c; --on-accent:#05210f; --accent-ink:#1c9a5a;
    --accent-soft:#12301f; --accent-soft-border:#215038; --accent-soft-text:#63e29a;
    --gold:#fbbf3f; --gold-hover:#f0ad20; --on-gold:#2a1c00; --gold-ink:#c98f1a;
    --gold-soft:#2c2410; --gold-soft-border:#5a4a1c; --gold-soft-text:#f7cd6b;
    --coral:#ff7d8d; --coral-soft:#331c20;
    --warn:#f7c65a; --warn-soft:#2a2210; --warn-border:#5a4a1a;
    --bad:#ff6b6b; --bad-hover:#f24d4d; --bad-soft:#301818; --bad-ink:#d43f3f;
    --paper:#f3ecdb; --paper-text:#2b2a26; --paper-border:#d8cfb8;
    --ring:rgba(139,141,255,.5);
    --shadow-sm:0 1px 2px rgba(0,0,0,.4);
    --shadow-md:0 8px 22px rgba(0,0,0,.5);
    --shadow-lg:0 18px 44px rgba(0,0,0,.58);
    --shadow-pop:0 22px 50px rgba(0,0,0,.64);
    color-scheme:dark;
  }
}

*{box-sizing:border-box}
/* overflow-x: CLIP, not hidden — hidden turns html/body into a scroll container, which
   detaches the sticky header from the viewport (it scrolls away, notably on iOS).
   clip forbids sideways scroll without creating a scroll container; hidden stays first
   as the fallback for old browsers. */
html{-webkit-text-size-adjust:100%;overflow-x:hidden;overflow-x:clip}
body{
  margin:0;min-height:100dvh;max-width:100%;overflow-x:hidden;overflow-x:clip; /* never scroll sideways on mobile */
  font:16px/1.6 var(--font);
  background:var(--bg);background-image:var(--bg-grad);background-attachment:fixed;
  color:var(--text);-webkit-font-smoothing:antialiased;
}
h1,h2,h3,.brand,.auth-brand{letter-spacing:-.015em}
a{color:var(--primary);text-decoration:none}
:focus-visible{outline:2px solid var(--ring);outline-offset:2px;border-radius:4px}
::selection{background:var(--primary);color:var(--on-primary)}

/* ---------- top bar ---------- */
.topbar{
  display:flex;align-items:center;gap:18px;padding:0 20px;min-height:var(--nav-h);
  background:color-mix(in srgb,var(--surface) 80%,transparent);
  backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;
}
.brand{font-weight:800;font-size:20px;color:var(--text);letter-spacing:-.02em;flex:none;display:inline-flex;align-items:center;gap:7px}
.brand::before{content:"";width:22px;height:22px;flex:none;background:url("/logo.svg") no-repeat center/contain}
/* inline brand mark inside text (landing eyebrow/footer, receipt header) */
.logo-inline{width:1.15em;height:1.15em;vertical-align:-.2em;border-radius:24%}
.brand span{color:var(--primary)}
.mainnav{display:none;gap:4px}
body.authed .mainnav{display:flex}
.mainnav a{
  color:var(--text-muted);font-weight:700;font-size:14px;padding:8px 13px;border-radius:var(--r-pill);
  transition:background .15s,color .15s,transform .1s;white-space:nowrap;
}
.mainnav a:hover{color:var(--primary-soft-text);background:var(--primary-soft);transform:translateY(-1px)}
.mainnav a.active{color:var(--primary-soft-text);background:var(--primary-soft)}
/* Desktop: the nav is a fixed left sidebar under the header (the menu outgrew a single row).
   Mobile (≤760px) keeps the ☰ sheet — those rules override these further down. */
@media (min-width:761px){
  body.authed .mainnav{
    position:fixed;left:0;top:var(--nav-h);bottom:0;width:212px;z-index:90;
    flex-direction:column;align-items:stretch;gap:3px;
    background:var(--surface);border-right:1px solid var(--border);
    padding:14px 10px 18px;overflow-y:auto;
  }
  body.authed .mainnav a{padding:11px 14px;font-size:14.5px;border-radius:var(--r-sm)}
  body.authed .mainnav a:hover{transform:none}
  body.authed main{margin-left:212px;margin-right:auto}
}
.nav-admin{display:none}   /* admin link lives in the header gear on desktop; shown in the menu on mobile */
/* build badge: pinned to the sidebar bottom on desktop (flex column + margin-top:auto),
   naturally the last row of the ☰ sheet on mobile */
.nav-build{margin-top:auto;padding:10px 14px 2px;font-size:11.5px;line-height:1.5;color:var(--text-muted);opacity:.7;overflow:hidden}
.topright{margin-left:auto;display:flex;align-items:center;gap:10px}
.status{font-size:12.5px;color:var(--text-muted);white-space:nowrap}
.status .on{color:var(--accent-soft-text);font-weight:700} .status .off{color:var(--warn);font-weight:700}
/* streak chip in the header (gamification at a glance) */
.hdr-streak{display:inline-flex;align-items:center;gap:5px;font-weight:800;font-size:13.5px;
  background:var(--gold-soft);border:1.5px solid var(--gold-soft-border);color:var(--gold-soft-text);
  padding:5px 11px;border-radius:var(--r-pill);white-space:nowrap}
.hdr-streak.zero{filter:grayscale(.5);opacity:.75}
.userbox{display:flex;align-items:center;gap:8px}
.userbox .ub-avatar{width:34px;height:34px;border-radius:50%;flex:none;display:grid;place-items:center;
  font-weight:800;font-size:14px;color:#fff;text-decoration:none;
  background:linear-gradient(135deg,var(--primary),var(--accent));box-shadow:var(--shadow-sm)}
.userbox .ub-avatar:hover{filter:brightness(1.06);transform:translateY(-1px)}
.userbox .ub-name{color:var(--text);font-weight:700;font-size:14px;padding:4px 4px}
.userbox .ub-logout{
  background:var(--surface-2);border:1px solid var(--border);color:var(--text-muted);
  border-radius:var(--r-pill);padding:8px 14px;font-size:13px;font-weight:600;transition:.15s;
}
.userbox .ub-logout:hover{border-color:var(--bad);color:var(--bad);background:var(--bad-soft)}
.userbox .ub-admin{font-size:18px;line-height:1;text-decoration:none;padding:4px}

/* icon buttons in header (theme + mobile menu) */
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;flex:none;padding:0;
  background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-sm);
  color:var(--text);font-size:18px;cursor:pointer;transition:.15s;
}
.icon-btn:hover{border-color:var(--primary);color:var(--primary)}
/* Serbian script switch: two-segment control («Ћир | Lat»), active script highlighted */
.scr-toggle{display:inline-flex;padding:3px;gap:2px;background:var(--surface-2);border:1px solid var(--border);
  border-radius:var(--r-pill);cursor:pointer;flex:none;transition:.15s}
.scr-toggle span{padding:4px 11px;border-radius:var(--r-pill);font-size:12.5px;font-weight:700;color:var(--text-faint);transition:.15s}
.scr-toggle span.on{background:var(--primary);color:#fff;box-shadow:var(--shadow-sm)}
.scr-toggle:hover{border-color:var(--primary)}
#navToggle{display:none}
/* course block inside the ☰ menu — mobile only (desktop keeps the header select) */
.nav-lang{display:none;align-items:center;gap:10px;padding:10px 12px;border-bottom:1px solid var(--border);margin-bottom:6px}
.nav-lang select{flex:1}
/* EU cooling-off consent checkbox on the pricing page */
.consent-row{display:flex;gap:10px;align-items:flex-start;margin:14px 0 4px;padding:12px 14px;
  border:1px solid var(--border);border-radius:12px;font-size:13.5px;color:var(--text-muted);cursor:pointer}
.consent-row input{margin-top:3px;flex:none;width:16px;height:16px;accent-color:var(--accent)}
.consent-row.need{border-color:var(--bad);box-shadow:0 0 0 3px color-mix(in srgb,var(--bad) 25%,transparent)}

/* switch-course CTA on the inactive course card — a real button, obvious on touch screens */
.course-card .course-cta{display:block;margin-top:10px;padding:10px 14px;border-radius:10px;
  background:var(--accent);color:var(--on-accent);font-weight:700;font-size:14px;text-align:center}
.course-card:hover .course-cta{background:var(--accent-hover)}
/* keep the title (+ «текущий» badge) clear of the absolutely-positioned EN/SR chip */
.course-card h3{padding-right:64px}

/* course badge on page headings (which language am I looking at) */
.course-badge{display:inline-block;vertical-align:middle;margin-left:10px;font-size:13px;font-weight:700;
  color:var(--primary-soft-text);background:var(--primary-soft);border-radius:var(--r-pill);padding:5px 12px;white-space:nowrap}
.theme-toggle .moon{display:none} .theme-toggle .sun{display:inline}
:root[data-theme="dark"] .theme-toggle .moon{display:inline}
:root[data-theme="dark"] .theme-toggle .sun{display:none}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]) .theme-toggle .moon{display:inline}
  :root:not([data-theme="light"]) .theme-toggle .sun{display:none}
}

/* ---------- layout ---------- */
main{max-width:1200px;margin:0 auto;padding:28px 24px 64px}
/* Admin: wide desktop tables, no artificial cap (body class set by the router).
   The fixed ad rail would overlap full-width content — and the admin is the one
   MANAGING the ad, so hide it here. */
body.wide-page main{max-width:none}
body.wide-page .ad-slot{display:none}
.loading{color:var(--text-muted);padding:48px;text-align:center}
h1{font-size:clamp(22px,4vw,28px);margin:0 0 6px;letter-spacing:-.02em;line-height:1.2}
h2{font-size:clamp(17px,3vw,20px);margin:26px 0 12px;letter-spacing:-.01em}
.sub{color:var(--text-muted);margin:0 0 20px;max-width:66ch}
.muted{color:var(--text-muted)}
.crumbs{color:var(--text-muted);font-size:13px;margin-bottom:14px}
.crumbs a{color:var(--text-muted)} .crumbs a:hover{color:var(--text)}
code{background:var(--surface-2);padding:1px 6px;border-radius:5px;font-size:.9em;font-family:ui-monospace,"SF Mono",Menlo,Consolas,monospace}
.warn-note{background:var(--warn-soft);border:1px solid var(--warn-border);color:var(--warn);border-radius:var(--r-sm);padding:11px 14px;margin-top:12px;font-size:14px}
.sys-banner{background:var(--bad-soft);color:var(--bad-ink);border-bottom:1px solid var(--bad);padding:10px 18px;font-size:14px;font-weight:600;text-align:center}
.sys-banner[hidden]{display:none}

/* service announcement strip (admin «Опции»): full-width under the header, clickable when
   a URL is set. Sits above the sidebar/content on desktop and mobile alike. */
.ann-bar{background:var(--primary-soft);border-bottom:1px solid var(--primary-soft-border);
  padding:9px 18px;font-size:13.5px;font-weight:600;text-align:center;color:var(--primary-soft-text)}
.ann-bar a{color:inherit;display:block;margin:-9px -18px;padding:9px 18px}
.ann-bar a:hover{filter:brightness(1.15)}
.ann-bar[hidden]{display:none}
@media (min-width:761px){body.authed .ann-bar{margin-left:212px}}

/* promo/ad slot: fixed right rail on wide screens, in-flow block after the content on
   narrow screens and phones (i.e. at the very bottom of the page). */
.ad-slot{margin:18px auto 26px;max-width:640px;padding:0 16px}
.ad-slot[hidden]{display:none}
.ad-mark{display:block;font-size:10.5px;letter-spacing:1px;text-transform:uppercase;
  color:var(--text-muted);opacity:.7;margin-bottom:4px}
.ad-card{display:block;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow-lg);color:var(--text)}
a.ad-card:hover{border-color:var(--primary-soft-border);transform:translateY(-1px)}
.ad-card img{display:block;width:100%;max-height:340px;object-fit:cover}
.ad-card .ad-text{padding:12px 14px;font-size:13.5px;line-height:1.5}
@media (min-width:1460px){
  body.authed .ad-slot{position:fixed;right:20px;top:calc(var(--nav-h) + 24px);width:300px;
    margin:0;padding:0;max-width:none;z-index:80}
}

/* ---------- buttons ---------- */
button,.btn{
  font:inherit;cursor:pointer;border:none;border-radius:var(--r-sm);padding:12px 20px;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;gap:7px;text-align:center;text-decoration:none;line-height:1.2;
  transition:transform .1s,box-shadow .1s,filter .15s,background .15s,border-color .15s,color .15s;
}
button:active,.btn:active{transform:scale(.97)}
/* chunky 3D primary CTA: a solid bottom edge that compresses on press */
.btn{background:var(--primary);color:var(--on-primary);--btn-edge:var(--primary-ink);box-shadow:0 4px 0 0 var(--btn-edge),var(--shadow-sm)}
.btn:hover{background:var(--primary-hover);filter:saturate(1.05)}
.btn:active{transform:translateY(3px);box-shadow:0 1px 0 0 var(--btn-edge)}
.btn.ghost{background:var(--surface);color:var(--text);border:1.5px solid var(--border-strong);--btn-edge:var(--border-strong);box-shadow:0 3px 0 0 var(--border-strong)}
.btn.ghost:hover{border-color:var(--primary-soft-border);--btn-edge:var(--primary-soft-border);box-shadow:0 3px 0 0 var(--primary-soft-border);color:var(--primary-soft-text)}
.btn.ghost:active{transform:translateY(2px);box-shadow:0 1px 0 0 var(--border-strong)}
.btn.rec{background:var(--bad);color:#fff;--btn-edge:var(--bad-ink)}
.btn.rec:hover{background:var(--bad-hover)}
button:disabled{opacity:.5;cursor:not-allowed;transform:none;filter:grayscale(.2)}
.btn:disabled{box-shadow:0 4px 0 0 var(--btn-edge)}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.big-actions{gap:12px;margin:6px 0 8px;flex-wrap:wrap}

/* ---------- inputs ---------- */
input:not([type]),input[type=text],input[type=email],input[type=password],input[type=number],input[type=search],input[type=tel],input[type=url],textarea,select{
  width:100%;background:var(--surface);border:1px solid var(--border-strong);border-radius:var(--r-sm);
  color:var(--text);padding:11px 13px;font:inherit;transition:border-color .15s,box-shadow .15s;
}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--ring)}
input::placeholder,textarea::placeholder{color:var(--text-faint)}
/* kill Chrome's beige autofill background — keep inputs on-theme */
input:-webkit-autofill,
input:-webkit-autofill:hover,
input:-webkit-autofill:focus,
input:-webkit-autofill:active{
  -webkit-text-fill-color:var(--text);
  -webkit-box-shadow:0 0 0 1000px var(--surface) inset;
  box-shadow:0 0 0 1000px var(--surface) inset;
  caret-color:var(--text);
  border-color:var(--border-strong);
  transition:background-color 99999s ease-out 0s;
}
input:-webkit-autofill:focus{border-color:var(--primary);-webkit-box-shadow:0 0 0 1000px var(--surface) inset,0 0 0 3px var(--ring);box-shadow:0 0 0 1000px var(--surface) inset,0 0 0 3px var(--ring)}
select{max-width:280px;cursor:pointer} textarea{min-height:120px;resize:vertical}
select[data-model-select]{max-width:100%;width:440px}
label.fld{display:block;margin:12px 0 5px;color:var(--text-muted);font-size:13px;font-weight:500}

/* ---------- panels / cards ---------- */
.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:20px;margin-bottom:16px;box-shadow:var(--shadow-sm)}
.grid{display:grid;gap:14px}
.grid.levels{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:20px;cursor:pointer;transition:transform .16s cubic-bezier(.2,.7,.3,1.3),box-shadow .16s,border-color .16s;display:block;position:relative;box-shadow:var(--shadow-sm)}
.card:hover{border-color:var(--primary-soft-border);transform:translateY(-4px);box-shadow:var(--shadow-md)}
.card h3{margin:0 0 6px;font-size:18px;letter-spacing:-.01em}
.card .meta{color:var(--text-muted);font-size:13px}
.lvl-badge{position:absolute;top:14px;right:14px;background:var(--primary-soft);border:1px solid var(--primary-soft-border);border-radius:var(--r-xs);padding:3px 10px;font-weight:700;font-size:13px;color:var(--primary-soft-text)}
.bar{height:8px;background:var(--surface-2);border-radius:var(--r-pill);margin-top:14px;overflow:hidden}
.bar>i{display:block;height:100%;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--primary),var(--accent))}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;border:1px solid var(--primary-soft-border);border-radius:var(--r-xl);padding:30px;margin-bottom:26px;
  background:linear-gradient(135deg,color-mix(in srgb,var(--primary) 16%,var(--surface)),color-mix(in srgb,var(--accent) 14%,var(--surface)) 55%,color-mix(in srgb,var(--gold) 14%,var(--surface)));
  box-shadow:var(--shadow-sm)}
.hero::after{content:"";position:absolute;top:-40px;right:-30px;width:180px;height:180px;border-radius:50%;background:radial-gradient(circle,color-mix(in srgb,var(--gold) 40%,transparent),transparent 70%);pointer-events:none}
.hero h1{font-size:clamp(22px,4.5vw,29px)} .hero p{color:var(--text);max-width:640px;opacity:.92;position:relative}
.how{margin-top:8px}
.how-step{display:flex;gap:14px;align-items:flex-start;margin-top:16px}
.how-step>span{flex:none;width:32px;height:32px;border-radius:var(--r-pill);background:var(--primary);color:var(--on-primary);font-weight:700;display:flex;align-items:center;justify-content:center}
.how-step small{color:var(--text-muted)}

/* ---------- learning path ---------- */
.path{display:flex;flex-direction:column;gap:10px}
.path-row{display:flex;align-items:center;gap:16px;background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:14px 18px;transition:border-color .15s,transform .15s;box-shadow:var(--shadow-sm)}
.path-row:hover{border-color:var(--primary-soft-border);transform:translateX(2px)}
.path-row .num{flex:none;width:40px;height:40px;border-radius:var(--r-pill);background:var(--primary-soft);border:1px solid var(--primary-soft-border);color:var(--primary-soft-text);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:17px}
.path-main{flex:1;color:var(--text)} .path-row .go{color:var(--primary);font-size:14px;font-weight:600}
.path-row.done{border-color:var(--ok,#1a9e5c)}
.path-row.done .num{background:var(--ok-soft,#e7f8ef);border-color:var(--ok,#1a9e5c);color:var(--ok,#1a9e5c)}
.path-row.done .go{color:var(--ok,#1a9e5c)}

/* ---------- unit steps ---------- */
.step{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:22px;margin-bottom:16px;box-shadow:var(--shadow-sm)}
.step.done{border-color:var(--accent-soft-border);background:var(--accent-soft)}
.step-head{display:flex;align-items:center;gap:14px;margin-bottom:12px}
.step-num{flex:none;width:36px;height:36px;border-radius:var(--r-pill);background:var(--primary);color:var(--on-primary);font-weight:700;display:flex;align-items:center;justify-content:center}
.step.done .step-num{background:var(--accent);color:var(--on-accent)}
.step-head h2{margin:0}
.step .how{background:var(--surface-2);border-left:3px solid var(--primary);border-radius:var(--r-sm);padding:12px 14px;color:var(--text);font-size:14px}
.how-tag{display:inline-block;background:var(--primary);color:var(--on-primary);font-weight:700;font-size:11px;padding:2px 8px;border-radius:5px;margin-right:6px;text-transform:uppercase;letter-spacing:.03em}
.step-body{margin:14px 0}
.step-foot{display:flex;justify-content:flex-end}
.done-btn{background:var(--accent);color:var(--on-accent);--btn-edge:var(--accent-ink);box-shadow:0 4px 0 0 var(--accent-ink)}
.done-btn:active{transform:translateY(3px);box-shadow:0 1px 0 0 var(--accent-ink)}
.step.done .done-btn{background:transparent;color:var(--accent-soft-text);border:1px solid var(--accent-soft-border);box-shadow:none}
.step.done .done-btn:active{transform:scale(.97)}

/* ---------- media ---------- */
.media-row{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--border);flex-wrap:wrap}
.media-row:last-child{border:0} .media-row .name{flex:1;font-size:14px;min-width:120px}
audio{width:100%;max-width:440px;height:38px} video{width:100%;border-radius:var(--r);background:#000;margin-top:6px}
.vid{margin-bottom:14px}
/* interactive video subtitles */
.vid-tools{display:flex;align-items:center;gap:10px;margin-top:8px;flex-wrap:wrap}
.vid-tools .vid-subs-btn.on{border-color:var(--primary);color:var(--primary)}
.subs-panel{position:relative;margin-top:10px;max-height:230px;overflow-y:auto;padding:12px 14px;line-height:1.9;
  background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-sm);font-size:15px}
.subs-panel .sub-seg{margin-right:6px}
.subs-panel .sub-seg.cur{background:var(--primary-soft);border-radius:6px;padding:2px 3px}
.subs-panel .sub-w{cursor:pointer;border-radius:4px;padding:0 1px}
.subs-panel .sub-w:hover{background:var(--primary-soft)}
.subs-panel .sub-w.cur{background:var(--primary);color:#fff}
.doc-link{display:inline-flex;align-items:center;gap:8px;padding:11px 15px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-sm);margin:0 8px 8px 0;color:var(--text);transition:.15s}
.doc-link:hover{border-color:var(--primary)}

/* ---------- tabs ---------- */
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0}
.tab{padding:9px 15px;border-radius:var(--r-sm);background:var(--surface-2);border:1px solid var(--border);color:var(--text-muted);cursor:pointer;font-size:14px;font-weight:500;transition:.15s}
.tab:hover{color:var(--text)}
.tab.active{background:var(--primary);color:var(--on-primary);border-color:var(--primary);font-weight:600}

/* ---------- exercises ---------- */
.exercise{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:18px;margin-bottom:14px;box-shadow:var(--shadow-sm)}
.exercise .ex-title{font-weight:700;margin-bottom:4px}
.exercise .ex-instr{color:var(--text-muted);font-size:14px;margin-bottom:12px}
.bank{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.chip{background:var(--primary);color:var(--on-primary);border-radius:var(--r-pill);padding:6px 14px;font-weight:600;font-size:14px;cursor:pointer;user-select:none;transition:.15s;min-height:34px;display:inline-flex;align-items:center}
.chip:hover{background:var(--primary-hover)} .chip.used{opacity:.4}
.ex-item{display:flex;align-items:center;gap:8px;margin:10px 0;flex-wrap:wrap}
.ex-item .qn{flex:none;color:var(--text-muted);width:22px}
.ex-item .sent{flex:1;min-width:200px}
.ex-item input{max-width:180px;display:inline-block;width:auto}
.ex-item .open-in{max-width:520px;width:100%;display:block;margin-top:6px}
.ex-item.gap{display:block}
.ex-item .opts{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
.opt{padding:9px 14px;border-radius:var(--r-sm);background:var(--surface-2);border:1px solid var(--border);cursor:pointer;font-size:14px;transition:.15s;min-height:40px;display:inline-flex;align-items:center}
.opt:hover{border-color:var(--primary-soft-border)}
.opt.sel{background:var(--primary);color:var(--on-primary);border-color:var(--primary)}
.res-ok{border-color:var(--accent)!important;color:var(--accent-soft-text)}
.res-bad{border-color:var(--bad)!important;color:var(--bad)}
.correct-tip{color:var(--accent-soft-text);font-size:13px;margin-left:6px}
.ex-score{font-size:20px;font-weight:700;margin-top:10px}

/* ---------- assessment ---------- */
.assess{margin-top:14px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r);padding:16px}
.score{font-size:32px;font-weight:800} .score span{font-size:16px;color:var(--text-muted)}
.score.good{color:var(--accent-soft-text)} .score.mid{color:var(--warn)} .score.bad{color:var(--bad)}
.assess ul{margin:6px 0;padding-left:20px} .assess .lbl{color:var(--text-muted);font-size:13px;margin-top:10px;font-weight:600}
.assess .corr{background:var(--primary-soft);border:1px solid var(--primary-soft-border);border-radius:var(--r-sm);padding:9px 12px;margin-top:6px;font-style:italic}
/* rendered AI markdown (mdLite): readable structure — headings, lists, emphasis, code */
.md{font-size:14px;line-height:1.6}
.md>*:first-child{margin-top:0}
.md p{margin:8px 0}
.md .md-h{font-weight:700;font-size:15px;margin:12px 0 6px;color:var(--text)}
.md .md-h:first-child{margin-top:0}
.md ul,.md ol{margin:8px 0;padding-left:22px}
.md li{margin:4px 0}
.md li::marker{color:var(--accent-soft-text)}
.md strong{font-weight:700;color:var(--text)}
.md code{background:var(--surface);border:1px solid var(--border);border-radius:6px;padding:1px 6px;font-size:13px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.lk-why-text.md{font-size:13px}
/* per-item exercise explanation: sits directly under the wrong answer it explains */
.item-note{display:flex;gap:8px;align-items:flex-start;margin-top:8px;padding:10px 12px;background:var(--accent-soft);border:1px solid var(--accent-soft-border);border-radius:var(--r-sm);font-size:14px;line-height:1.55}
.item-note .item-note-ic{flex:none;line-height:1.4}
.item-note .md-body{flex:1}
.item-note .md-body>*:first-child{margin-top:0}
.item-note .md-body>*:last-child{margin-bottom:0}
.item-note .md-body p{margin:4px 0}
.item-note strong{color:var(--text)}
/* audio pronunciation trainer (workbook/SB audio → transcript → shadowing with AI check) */
.aud-row{flex-wrap:wrap}
.pron-open{margin-left:8px;color:var(--primary)}
.pron-panel{flex-basis:100%;margin-top:10px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r);padding:12px 14px}
.pron-head{font-size:13px;margin-bottom:10px}
.pron-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:9px 0;border-top:1px solid var(--border)}
.pron-row:first-of-type{border-top:none}
.pron-text{flex:1;min-width:180px;font-size:17px;line-height:1.5}
.pron-play{flex:none}
.pw{cursor:pointer;border-radius:5px;padding:1px 3px;transition:.12s}
.pw:hover{background:var(--primary-soft)}
.pw.armed{background:var(--accent-soft);color:var(--accent-soft-text);font-weight:700}
.pron-row .wr-res{flex-basis:100%;font-size:13px;padding-left:2px}
.transcript{color:var(--text-muted);font-size:13px;margin-top:6px}

/* ---------- words ---------- */
.word-list{display:grid;gap:8px}
.word-row{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:12px 15px;box-shadow:var(--shadow-sm)}
.word-row .tr{color:var(--accent-soft-text);margin-left:10px;font-weight:600;font-size:16px} .word-row .ex{color:var(--text-muted);font-size:17px;margin-top:6px}
.wr-head{display:flex;align-items:center;gap:8px;flex-wrap:wrap} .wr-head b{font-size:19px}
.ipa{color:var(--text-muted);font-style:italic;font-size:15px}
.wr-actions{margin-top:8px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.mini{background:var(--surface-2);border:1px solid var(--border);color:var(--text);border-radius:var(--r-xs);padding:6px 11px;font-size:13px;font-weight:600;min-height:34px;transition:.15s}
.mini:hover{border-color:var(--primary)} .mini.on{background:var(--bad);color:#fff} .mini.rec{color:var(--primary)}
.ok{color:var(--accent-soft-text);font-weight:600} .bad{color:var(--bad);font-weight:600}
.write-card input{margin-top:10px;max-width:340px}
.flash .word .mini{vertical-align:middle;margin-left:8px}
/* irregular-verb rows: one line per principal part (base/past/participle) */
.word-row .ex .mini{padding:2px 7px;min-height:0;margin-right:6px}
.vf-list{display:grid;gap:6px;margin-top:10px}
.vf{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:7px 9px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-xs)}
.vf-role{flex:none;width:108px;font-size:13px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.02em}
.vf-word{font-size:18px}
.vf .ipa{font-size:16px}
.vf .mini{padding:5px 10px;min-height:32px}
.vf .wr-res{font-size:13px}
.vf-ex{flex-basis:100%;color:var(--text-muted);font-size:17px;padding-left:116px}
.vf-ex .mini{padding:2px 7px;min-height:0;margin-right:4px}
.vf-card{display:grid;gap:5px;text-align:left;margin-top:6px}
.vf-card-row{font-size:13px}
.vf-card-row .vf-role{display:inline-block;width:96px}
.vf-card-ex{display:block;color:var(--text-muted);font-style:italic;padding-left:96px}
@media(max-width:560px){.vf-role{width:auto}.vf-ex{padding-left:0}.vf-card-ex{padding-left:0}}

/* ---------- flashcards ---------- */
.flash-wrap{max-width:560px;margin:0 auto;text-align:center}
.flash{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-xl);padding:48px 24px;min-height:210px;display:flex;flex-direction:column;justify-content:center;cursor:pointer;box-shadow:var(--shadow-md);transition:transform .16s}
.flash:hover{transform:translateY(-2px)}
.flash .word{font-size:clamp(28px,7vw,38px);font-weight:800;letter-spacing:-.02em} .flash .pos{color:var(--text-muted);margin-top:6px}
.flash .answer{font-size:22px;color:var(--accent-soft-text);margin-top:18px;font-weight:600} .flash .ex{color:var(--text-muted);margin-top:10px;font-size:14px}
.grades{display:flex;gap:10px;justify-content:center;margin-top:18px;flex-wrap:wrap} .grades button{flex:1;min-width:96px;max-width:140px}
.grades button{color:#fff;box-shadow:0 4px 0 0 var(--btn-edge,rgba(0,0,0,.25))}
.grades button:active{transform:translateY(3px);box-shadow:0 1px 0 0 var(--btn-edge,rgba(0,0,0,.25))}
.g-again{background:var(--bad);--btn-edge:var(--bad-ink)} .g-hard{background:var(--warn);--btn-edge:color-mix(in srgb,var(--warn) 74%,#000)}
.g-good{background:var(--primary);color:var(--on-primary);--btn-edge:var(--primary-ink)} .g-easy{background:var(--accent);color:var(--on-accent);--btn-edge:var(--accent-ink)}

/* ---------- smart reading ---------- */
.read-head{display:flex;align-items:center;gap:12px;margin-bottom:6px;flex-wrap:wrap}
.read-head h1{margin:0}
.rw-legend{padding:0 6px;border-radius:5px;font-weight:600}
.rw-legend.ok{background:#d6f5e3;color:#177a48} .rw-legend.bad{background:#ffdede;color:#c0392b}
.read-toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:14px 0 10px}
/* keep buttons at their content width and wrap to the next line instead of shrinking
   (shrinking made the labels overlap on tablets) */
.read-toolbar>.btn{flex:0 0 auto}
.read-progress{height:8px;background:var(--surface-2);border-radius:var(--r-pill);overflow:hidden;margin-bottom:14px}
.read-progress>i{display:block;height:100%;width:0;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--primary),var(--accent));transition:width .2s}
.passage{background:var(--paper);color:var(--paper-text);border:1px solid var(--paper-border);border-radius:var(--r);padding:16px 18px;margin-bottom:14px;line-height:1.6;font-size:16px}
.passage.reader{font-size:clamp(17px,2.6vw,20px);line-height:1.85;padding:28px clamp(20px,4vw,44px);user-select:text}
/* book reader: comfortable page-like measure that adapts to the viewport */
#bookPage .passage.reader{max-width:70ch;margin-inline:auto}
/* layout mode: mirror the PDF page — preserve line breaks, indentation and column alignment.
   Monospace makes pdftotext -layout spacing line up; pre-wrap keeps blank lines & indents. */
#bookPage .passage.reader.layout{
  max-width:none;white-space:pre-wrap;overflow-wrap:break-word;
  font-family:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  font-size:clamp(12.5px,1.5vw,14.5px);line-height:1.55;tab-size:4;
}
#bookPage .passage.reader.layout .rw{padding:0}
.passage.reader .rw{border-radius:5px;padding:0 1px;transition:background .12s,color .12s;cursor:text}
.passage.reader .rw.ok{background:#c9f2db;color:#12703f}
.passage.reader .rw.bad{background:#ffd3d3;color:#b02a1c}
.passage.reader .rw.cur{box-shadow:0 0 0 2px var(--primary);background:#dcebff;color:#123}
.hint-note{color:var(--text-muted);font-size:13px;margin:2px 0 14px}
.read-metrics{display:flex;gap:18px;flex-wrap:wrap;margin:8px 0;color:var(--text);font-size:14px}
.read-metrics b{color:var(--accent-soft-text)}
.read-assess .score{margin-bottom:6px}
.assess ul.sounds li{margin-bottom:6px}
.missed-words{display:flex;flex-wrap:wrap;gap:8px;margin:6px 0}
.missed-words .chip{background:var(--surface);border:1px solid var(--bad);color:var(--bad)}
.read-card h3{padding-right:56px}
.sp-tools{margin:8px 0 6px} .sp-result:empty{display:none}

/* ---------- selection popup ---------- */
.lookup-pop{position:absolute;z-index:200;min-width:210px;max-width:340px;background:var(--surface);border:1px solid var(--primary-soft-border);border-radius:var(--r);padding:12px 14px;box-shadow:var(--shadow-pop)}
.lookup-pop .lk-head{display:flex;align-items:center;gap:8px;margin-bottom:6px}
.lookup-pop .lk-head b{font-size:16px;flex:1;color:var(--text)}
.lookup-pop .lk-close{padding:4px 9px}
.lookup-pop .lk-ipa{color:var(--text-muted);font-style:italic;margin-bottom:2px}
.lookup-pop .lk-tr{color:var(--accent-soft-text);font-weight:600}
.lookup-pop .lk-ex{color:var(--text-muted);font-size:13px;margin-top:6px;border-top:1px solid var(--border);padding-top:6px}
.lookup-pop .lk-why{margin-top:8px;border-top:1px solid var(--border);padding-top:8px}
.lk-why-btn{background:var(--primary-soft);border:1px solid var(--primary-soft-border);color:var(--primary-soft-text);border-radius:var(--r-sm);padding:8px 12px;font-size:13px;font-weight:600;cursor:pointer;width:100%;min-height:38px}
.lk-why-btn:hover{background:var(--primary);color:var(--on-primary)}
.lk-why-load{color:var(--text-muted);font-size:13px}
.lk-why-title{color:var(--primary);font-weight:700;font-size:13px;margin-bottom:4px}
.lk-why-text{font-size:14px;line-height:1.55;color:var(--text);white-space:pre-wrap}
.lk-phrase-tr{font-size:16px;margin-bottom:10px;padding-bottom:8px;border-bottom:1px solid var(--border)}

/* ---------- grammar ---------- */
.grammar-list{display:flex;flex-direction:column;gap:8px}
.gram-row{display:flex;align-items:center;gap:14px;background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:13px 16px;transition:border-color .15s,transform .15s;box-shadow:var(--shadow-sm)}
.gram-row:hover{border-color:var(--primary-soft-border);transform:translateX(2px)}
.gram-num{flex:none;width:32px;height:32px;border-radius:var(--r-pill);background:var(--surface-2);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}
.gram-main{flex:1;color:var(--text)} .gram-row .go{color:var(--primary);font-size:13px;white-space:nowrap;font-weight:600}
.gram-row.done{border-color:var(--ok,#1a9e5c)}
.gram-row.done .gram-num{background:var(--ok-soft,#e7f8ef);border-color:var(--ok,#1a9e5c)}
.gram-row.done .go{color:var(--ok,#1a9e5c)}
.done-tag{display:inline-block;margin-left:6px;padding:1px 8px;border-radius:var(--r-pill);background:var(--ok-soft,#e7f8ef);color:var(--ok,#1a9e5c);font-size:11px;font-weight:700;vertical-align:middle}
.read-card.done{border-color:var(--ok,#1a9e5c)}
.read-card .done-check{font-size:16px;vertical-align:middle}
.gram-explain p{margin:0 0 10px;color:var(--text)} .gram-explain p:last-child{margin-bottom:0}
.gram-rules{display:flex;flex-direction:column;gap:10px}
.gram-rule{background:var(--surface-2);border-left:3px solid var(--accent);border-radius:var(--r-sm);padding:12px 14px}
.gram-rule .gr-text{font-weight:600;margin-bottom:6px}
.gram-rule .gr-ex{color:var(--text);font-size:14px;margin:3px 0;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.gr-ex .gr-ex-t{font-weight:600}
.gr-ex .gr-ex-tr{color:var(--text-muted)}
.gram-mistakes{border-left:3px solid var(--warn)}
.gram-mistakes ul{margin:6px 0;padding-left:20px} .gram-mistakes li{margin-bottom:4px;color:var(--warn)}
.gram-pattern{background:linear-gradient(135deg,var(--accent-soft),color-mix(in srgb,var(--accent-soft) 70%,var(--surface)));border:1px solid var(--accent-soft-border);border-radius:var(--r-lg);padding:16px 18px;margin:0 0 18px}
.gram-pattern .gp-tag{font-size:12px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--accent-soft-text);margin-bottom:10px}
.gram-pattern .gp-lines{display:flex;flex-direction:column;gap:6px}
.gram-pattern .gp-line{font-size:clamp(16px,3vw,19px);font-weight:700;color:var(--text);font-family:ui-monospace,"SF Mono",Menlo,Consolas,monospace;line-height:1.4}

/* ---------- my books ---------- */
.upload-box{display:flex;align-items:center;gap:14px;flex-wrap:wrap;background:var(--surface);border:1.5px dashed var(--border-strong);border-radius:var(--r-lg);padding:20px}
.book-card{padding:0;overflow:hidden}
.book-card .book-open{display:block;padding:20px 20px 16px;color:var(--text)}
.book-card .book-fmt{position:absolute;top:14px;right:14px;background:var(--primary-soft);border:1px solid var(--primary-soft-border);border-radius:var(--r-xs);padding:3px 9px;font-weight:700;font-size:12px;color:var(--primary-soft-text)}
.book-card .book-del{position:absolute;bottom:10px;right:10px;background:transparent;border:none;color:var(--text-faint);cursor:pointer;font-size:16px;width:36px;height:36px;border-radius:var(--r-sm)}
.book-card .book-del:hover{color:var(--bad);background:var(--bad-soft)}
.book-nav{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:8px 0 12px}
.book-nav.bottom{margin:16px 0 40px}
/* ---------- progress overview ---------- */
.pg-hero{display:flex;gap:24px;align-items:center;flex-wrap:wrap;margin:18px 0 28px}
.pg-ring{--pct:0;width:140px;height:140px;border-radius:50%;background:conic-gradient(var(--primary) calc(var(--pct)*1%),var(--surface-2) 0);display:grid;place-items:center;flex:none}
.pg-ring-in{width:104px;height:104px;border-radius:50%;background:var(--surface);display:grid;place-items:center;text-align:center;line-height:1.1}
.pg-ring-in b{font-size:30px;font-weight:800}
.pg-ring-in span{font-size:12px;color:var(--text-muted)}
.pg-dims{flex:1;min-width:260px;display:grid;grid-template-columns:1fr 1fr;gap:14px}
.pg-dim-top{display:flex;justify-content:space-between;font-weight:600;margin-bottom:5px}
.pg-bar{height:9px;background:var(--surface-2);border-radius:var(--r-pill);overflow:hidden}
.pg-bar>i{display:block;height:100%;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:var(--r-pill)}
.pg-sub{font-size:12px;margin-top:4px}
.pg-blocks{display:flex;flex-direction:column;gap:10px}
.pg-block{border:1px solid var(--border);border-radius:var(--r);overflow:hidden;background:var(--surface)}
.pg-block-head{width:100%;display:flex;align-items:center;gap:12px;padding:14px 16px;background:transparent;border:none;color:var(--text);cursor:pointer}
.pg-block-code{font-weight:800;background:var(--primary-soft);color:var(--primary-soft-text);border-radius:var(--r-xs);padding:3px 9px;font-size:13px}
.pg-block-title{font-weight:700}
.pg-block-bar{flex:1;height:8px;background:var(--surface-2);border-radius:var(--r-pill);overflow:hidden}
.pg-block-bar>i{display:block;height:100%;background:linear-gradient(90deg,var(--primary),var(--accent))}
.pg-block-pct{font-weight:700;min-width:44px;text-align:right}
.pg-caret{transition:transform .2s;color:var(--text-faint)}
.pg-block-head.open .pg-caret{transform:rotate(180deg)}
.pg-units{display:flex;flex-direction:column;border-top:1px solid var(--border)}
.pg-unit{display:flex;align-items:center;gap:12px;padding:10px 16px;color:var(--text);border-bottom:1px solid var(--border)}
.pg-unit:last-child{border-bottom:none}
.pg-unit:hover{background:var(--surface-2)}
.pg-unit-name{flex:none;min-width:96px;font-size:14px}
.pg-unit-bar{flex:1;height:6px;background:var(--surface-2);border-radius:var(--r-pill);overflow:hidden}
.pg-unit-bar>i{display:block;height:100%;background:var(--accent)}
.pg-unit-pct{min-width:40px;text-align:right;font-size:13px;font-weight:600;color:var(--text-muted)}
@media(max-width:640px){.pg-dims{grid-template-columns:1fr}}
.pg-cta{margin:26px 0 8px;text-align:center}

/* ---------- momentum (per-section growth over time) ---------- */
.mom-hero{display:flex;gap:16px;align-items:flex-start;margin:18px 0 24px;padding:18px 20px;
  background:linear-gradient(120deg,var(--accent-soft),var(--primary-soft));
  border:1px solid var(--accent-soft-border);border-radius:var(--r-lg);box-shadow:var(--shadow-sm)}
.mom-hero-ic{font-size:30px;line-height:1;flex:none}
.mom-summary{font-size:16px;font-weight:600;line-height:1.5;color:var(--text)}
.mom-since{font-size:13px;margin-top:8px}
.mom-since span{white-space:nowrap}
.mom-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.mom-card{position:relative;display:flex;flex-direction:column;gap:10px;padding:16px 16px 18px;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--shadow-sm);overflow:hidden}
.mom-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--border-strong)}
.mom-card.t-up::before{background:var(--accent)}
.mom-card.t-down::before{background:var(--bad)}
.mom-card.t-flat::before{background:var(--gold)}
.mom-card.t-new::before{background:var(--primary)}
.mom-card.is-empty{opacity:.72}
.mom-card.is-empty::before{background:var(--border-strong)}
.mom-top{display:flex;align-items:center;gap:9px}
.mom-ic{font-size:19px;line-height:1}
.mom-title{font-weight:800;font-size:15px;letter-spacing:-.01em}
.mom-kind{margin-left:auto;font-size:10.5px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;
  color:var(--text-muted);background:var(--surface-2);border-radius:var(--r-pill);padding:3px 8px}
.mom-chart{height:44px;margin:2px 0}
.mom-chart .spark{width:100%;height:100%;display:block}
.spark-area{fill:var(--surface-2);opacity:.55}
.spark-line{fill:none;stroke:var(--text-faint);stroke-width:2.2;stroke-linejoin:round;stroke-linecap:round;
  vector-effect:non-scaling-stroke}
.spark-dot{fill:var(--text-faint)}
.spark.t-up .spark-line{stroke:var(--accent)} .spark.t-up .spark-dot{fill:var(--accent)}
.spark.t-up .spark-area{fill:var(--accent);opacity:.14}
.spark.t-down .spark-line{stroke:var(--bad)} .spark.t-down .spark-dot{fill:var(--bad)}
.spark.t-down .spark-area{fill:var(--bad);opacity:.13}
.spark.t-flat .spark-line{stroke:var(--gold)} .spark.t-flat .spark-dot{fill:var(--gold)}
.spark.t-flat .spark-area{fill:var(--gold);opacity:.13}
.spark.t-new .spark-line{stroke:var(--primary)} .spark.t-new .spark-dot{fill:var(--primary)}
.spark.t-new .spark-area{fill:var(--primary);opacity:.13}
.mom-figures{display:flex;align-items:flex-end;justify-content:space-between;gap:8px}
.mom-now{line-height:1.05}
.mom-now b{font-size:26px;font-weight:800;letter-spacing:-.02em}
.mom-now span{display:block;font-size:11.5px;color:var(--text-muted);margin-top:2px}
.mom-badge{flex:none;font-size:13px;font-weight:800;border-radius:var(--r-pill);padding:5px 11px;white-space:nowrap}
.mom-badge.t-up{color:var(--accent-soft-text);background:var(--accent-soft);border:1px solid var(--accent-soft-border)}
.mom-badge.t-down{color:var(--bad-ink);background:var(--bad-soft);border:1px solid var(--coral-soft)}
.mom-badge.t-flat{color:var(--gold-soft-text);background:var(--gold-soft);border:1px solid var(--gold-soft-border)}
.mom-badge.t-new{color:var(--primary-soft-text);background:var(--primary-soft);border:1px solid var(--primary-soft-border)}
.mom-badge.t-empty{color:var(--text-faint);background:var(--surface-2)}
.mom-hl{font-weight:700;font-size:14px;line-height:1.35}
.mom-dt{font-size:12.5px;line-height:1.4}
.mom-empty{text-align:center;max-width:440px;margin:40px auto;padding:32px 24px;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-xl);box-shadow:var(--shadow-sm)}
.mom-empty-ic{font-size:44px;margin-bottom:6px}
.mom-empty h2{margin:6px 0 10px}
@media(max-width:520px){.mom-grid{grid-template-columns:1fr}.mom-hero{padding:14px 16px}.mom-summary{font-size:15px}}

/* grammar topic prev/next navigation */
.topic-nav{display:flex;gap:12px;margin:24px 0 40px}
.topic-nav .tnav-btn{flex:1;display:flex;flex-direction:column;gap:4px;padding:14px 16px;background:var(--surface);border:1px solid var(--border);border-radius:var(--r);color:var(--text);transition:border-color .15s,background .15s}
.topic-nav .tnav-btn:hover{border-color:var(--primary);background:var(--surface-2)}
.topic-nav .tnav-btn.next{text-align:right}
.topic-nav .tnav-btn.empty{visibility:hidden;pointer-events:none}
.topic-nav .tnav-btn.locked{opacity:.75}
.topic-nav .tnav-dir{font-size:12px;font-weight:600;color:var(--text-muted)}
.topic-nav .tnav-title{font-weight:700}
@media(max-width:640px){.topic-nav .tnav-title{font-size:14px}}
.book-count{color:var(--text-muted);font-size:14px;font-weight:600}

/* ---------- my dictionary ---------- */
.dict-add{gap:10px}
.dict-entry{padding:16px 18px}
.dict-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:8px}
.dict-word{font-size:20px;letter-spacing:-.01em}
.dict-multi{font-size:12px;font-weight:600;color:var(--primary-soft-text);background:var(--primary-soft);border:1px solid var(--primary-soft-border);border-radius:var(--r-pill);padding:2px 10px}
.dict-del{margin-left:auto;background:transparent;border:none;color:var(--text-faint);cursor:pointer;font-size:15px;width:34px;height:34px;border-radius:var(--r-sm)}
.dict-del:hover{color:var(--bad);background:var(--bad-soft)}
/* meanings as a compact row of clickable chips */
.sense-chips{display:flex;flex-wrap:wrap;gap:8px}
.sense-chip{display:inline-flex;align-items:center;gap:7px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-pill);padding:7px 13px;cursor:pointer;font-weight:600;color:var(--text);transition:.15s;min-height:36px}
.sense-chip:hover{border-color:var(--accent-soft-border);background:var(--accent-soft)}
.sense-chip.active{background:var(--accent-soft);border-color:var(--accent);color:var(--accent-soft-text)}
.sense-chip .sc-tr{font-size:15px}
.sense-chip .sc-pos{font-size:11px;font-weight:500;color:var(--text-muted)}
.sense-chip .sc-caret{font-size:11px;color:var(--text-faint);transition:transform .2s}
.sense-chip.active .sc-caret{transform:rotate(180deg);color:var(--accent-soft-text)}
/* accordion drawer (CSS-only smooth height via grid rows) */
.sense-detail{display:grid;grid-template-rows:0fr;transition:grid-template-rows .25s ease}
.sense-detail.open{grid-template-rows:1fr;margin-top:12px}
.sense-detail>.sense-detail-in{overflow:hidden;min-height:0;background:var(--surface-2);border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:var(--r-sm);padding:12px 14px;transition:padding .25s ease,border-width .25s ease}
/* fully collapse the drawer: without this the border+padding leave a visible strip at 0fr height */
.sense-detail:not(.open)>.sense-detail-in{padding-top:0;padding-bottom:0;border-width:0}
.sense-pos{display:inline-block;font-size:12px;color:var(--text-muted);background:var(--surface-3);border-radius:var(--r-xs);padding:1px 8px}
.sense-when{color:var(--primary-soft-text);font-size:13.5px;margin-top:8px;font-weight:500}
.sense-mean{color:var(--text);font-size:14px;margin-top:6px}
.sense-ex{color:var(--text-muted);font-size:14px;margin-top:10px;display:flex;align-items:flex-start;gap:8px;flex-wrap:wrap}
.sense-ex i{color:var(--text)}
.sense-extr{color:var(--text-muted);font-size:13px;width:100%;font-style:normal;margin-top:2px}

/* async enrichment states */
.dict-entry.is-pending{opacity:.9}
.dict-pending{display:flex;align-items:center;gap:10px;color:var(--text-muted);font-size:14px}
.dict-error{color:var(--warn);font-size:14px}
.spinner{width:16px;height:16px;border:2px solid var(--border-strong);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite;flex:none}
@keyframes spin{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){.spinner{animation-duration:1.4s}}

/* add-to-dictionary in the selection popup */
.lk-actions{margin-top:8px;border-top:1px solid var(--border);padding-top:8px}
.lk-add{background:var(--accent-soft);border:1px solid var(--accent-soft-border);color:var(--accent-soft-text);border-radius:var(--r-sm);padding:8px 12px;font-size:13px;font-weight:600;cursor:pointer;width:100%;min-height:38px}
.lk-add:hover{background:var(--accent);color:var(--on-accent)}
.lk-add.added{background:transparent;cursor:default}
.mini.added{color:var(--accent-soft-text);border-color:var(--accent-soft-border)}

/* ---------- auth ---------- */
.auth-wrap{min-height:calc(100dvh - var(--nav-h));display:flex;align-items:center;justify-content:center;padding:24px}
.auth-card{width:100%;max-width:410px;background:var(--surface);border:1px solid var(--border);border-radius:var(--r-xl);padding:34px 30px;box-shadow:var(--shadow-lg)}
.auth-brand{font-size:30px;font-weight:800;text-align:center;letter-spacing:-.02em} .auth-brand span{color:var(--primary)}
.auth-sub{color:var(--text-muted);text-align:center;font-size:14px;margin:8px 0 22px}
.auth-tabs{display:flex;gap:8px;margin-bottom:18px}
.auth-tabs button{flex:1;padding:11px;border-radius:var(--r-sm);background:var(--surface-2);border:1px solid var(--border);color:var(--text-muted);font-weight:600}
.auth-tabs button.active{background:var(--primary);color:var(--on-primary);border-color:var(--primary)}
.auth-form{display:flex;flex-direction:column;gap:12px}
.auth-form input{width:100%}
.auth-form .au-btn{margin-top:4px}
.auth-alt{text-align:center;font-size:13px} .auth-alt a{color:var(--primary)}
.auth-msg{margin-top:14px;font-size:14px;text-align:center;min-height:18px}
.auth-msg.ok{color:var(--accent-soft-text)} .auth-msg.err{color:var(--bad)}

/* ---------- plan pill ---------- */
.plan-pill{font-size:12px;padding:5px 12px;border-radius:var(--r-pill);font-weight:700;white-space:nowrap}
.plan-pill.paid{background:var(--gold-soft);color:var(--gold-soft-text);border:1px solid var(--gold-soft-border)}
.plan-pill.free{background:var(--primary-soft);color:var(--primary-soft-text);border:1px solid var(--primary-soft-border);transition:.15s}
.plan-pill.free:hover{background:var(--primary);color:var(--on-primary)}
.plan-pill.limit{background:var(--gold-soft);color:var(--gold-soft-text);border:1px solid var(--gold-soft-border);transition:.15s}
.plan-pill.limit:hover{background:var(--gold);color:var(--on-gold)}
/* upgrade CTA + premium locks (feature-based gating) */
.btn.upgrade-btn{background:var(--gold);color:var(--on-gold);--btn-edge:var(--gold-ink);box-shadow:0 4px 0 0 var(--gold-ink)}
.btn.upgrade-btn:hover{background:var(--gold-hover)}
.upsell{text-align:center;max-width:520px;margin:24px auto;padding:32px 24px}
.upsell .upsell-ic{font-size:40px;margin-bottom:8px}
.upsell h2{margin:0 0 8px}
.ai-lock{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:14px;padding:12px 14px;background:var(--gold-soft);border:1px solid var(--gold-soft-border);border-radius:var(--r);color:var(--gold-soft-text);font-size:14px}
.ai-lock .btn{margin-left:auto}

/* ---------- pricing ---------- */
.pricing-grid .plan-card{padding:24px;text-align:center;position:relative}
.plan-card.accent{border-color:var(--primary);box-shadow:var(--shadow-md)}
.plan-card.current{border-color:var(--accent)}
.plan-card h3{font-size:20px;margin:0 0 8px}
.plan-price{font-size:32px;font-weight:800;color:var(--primary)} .plan-price span{font-size:14px;color:var(--text-muted);font-weight:500}
.plan-year{font-size:13px;margin-bottom:10px;color:var(--text-muted)}
.plan-feats{list-style:none;padding:0;margin:14px 0;text-align:left} .plan-feats li{color:var(--text);margin:8px 0;font-size:14px}
.plan-btns{display:flex;flex-direction:column;gap:8px}
.plan-current{color:var(--accent-soft-text);font-weight:700}

/* ---------- profile ---------- */
.prof-row{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid var(--border)}
.prof-row:last-child{border:0}
.stat-card{text-align:center} .stat-card h3{font-size:34px;margin:0;color:var(--accent-soft-text)}

/* ---------- admin ---------- */
.admin-tabs{flex-wrap:wrap}
.admin-status{margin-bottom:10px;color:var(--text-muted)} .admin-status .on{color:var(--accent-soft-text)} .admin-status .off{color:var(--warn)}
.plan-edit .pe-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;gap:12px}
.plan-edit .pe-active{font-size:13px;color:var(--text-muted);display:flex;align-items:center;gap:6px}
.pe-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.pe-grid label{font-size:12px;color:var(--text-muted);display:flex;flex-direction:column;gap:4px}
.pe-grid input{padding:9px}
.tpl-edit code{font-size:12px}
.admin-users-wrap{overflow-x:auto}
.admin-users{width:100%;border-collapse:collapse;font-size:14px;min-width:1080px}
.admin-users th,.admin-users td{text-align:left;padding:9px 7px;border-bottom:1px solid var(--border)}
/* Control cells must never crush: the flexible slack lives in the Email column,
   which ellipsizes (full address on hover) instead of pushing the action column
   into horizontal scroll. */
.admin-users select{min-width:110px;max-width:150px;padding:7px}
.admin-users input[data-f=until]{width:118px;min-width:118px}
.admin-users input.uu-name{width:130px;min-width:110px}
.admin-users input.uu-email{width:100%;min-width:150px;max-width:340px}
.admin-users td:nth-child(3){width:99%;max-width:340px}
.admin-users .btn{padding:7px 12px}
.mini.danger{color:var(--bad);border-color:var(--bad-soft)}
.mini.danger:hover{background:var(--bad-soft);border-color:var(--bad)}
tr.user-blocked td{background:var(--bad-soft)}
tr.user-blocked input,tr.user-blocked select{opacity:.75}
/* platform tracking: summary chips above the users table + expandable device sessions */
.pf-summary{display:flex;gap:18px;flex-wrap:wrap;font-size:13px;margin-bottom:10px}
.pf-summary>span{white-space:nowrap}
.sess-row td{background:var(--panel-2,rgba(0,0,0,.03));font-size:13px;padding:8px 12px}
.sess-line{padding:2px 0;white-space:nowrap}

/* placement test + personal study plan */
.plt-wrap{max-width:760px;margin:0 auto}
.plt-steps{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.plt-chip{font-size:13px;font-weight:700;padding:6px 12px;border-radius:999px;background:var(--panel);border:1px solid var(--border);color:var(--text-muted)}
.plt-chip.now{background:var(--primary);color:var(--on-primary);border-color:var(--primary)}
.plt-chip.done{background:var(--accent-soft,#e2fbef);color:var(--accent-ink);border-color:transparent}
.plt-intro ul{padding-left:20px}
.plt-notes li{margin:4px 0}
.plt-q{margin-bottom:18px}
.plt-prompt{font-weight:700;margin:0 0 8px}
.plt-choices{display:flex;flex-wrap:wrap;gap:8px}
.plt-choice{padding:10px 16px;border-radius:var(--r-sm,12px);border:1.5px solid var(--border);background:var(--panel);cursor:pointer;font-size:15px;color:var(--text)}
.plt-choice.sel{border-color:var(--primary);background:var(--primary);color:var(--on-primary);font-weight:700}
.plt-inp,#pltText{width:100%;padding:10px;border-radius:var(--r-sm,12px);border:1.5px solid var(--border);background:var(--panel);color:var(--text);font:inherit}
#pltText{margin-bottom:12px}
.plt-passage p{white-space:pre-wrap;line-height:1.6}
.plt-target{font-size:20px;font-weight:700;background:var(--panel);border:1px dashed var(--border);border-radius:var(--r);padding:14px 18px}
.plt-recrow{display:flex;gap:10px;align-items:center;margin:12px 0}
#pltRec.recording{background:var(--bad,#e5484d);color:#fff}
.plt-result{text-align:center}
.plt-level small{display:block;color:var(--text-muted)}
.plt-level b{font-size:56px;letter-spacing:-.02em;color:var(--primary)}
.plt-dims{display:flex;flex-direction:column;gap:10px;max-width:480px;margin:18px auto;text-align:left}
.plt-dim{display:grid;grid-template-columns:110px 52px 1fr 44px;gap:10px;align-items:center}
.plt-dim.hist{grid-template-columns:110px 52px 1fr 44px 92px}
.plt-delta{display:inline-block;border-radius:999px;padding:2px 9px;font-size:12.5px;font-weight:700;white-space:nowrap}
.plt-delta.up{background:var(--ok-soft,#e7f8ef);color:var(--ok,#1a9e5c)}
.plt-delta.down{background:var(--bad-soft,#fdeaea);color:var(--bad,#d64545)}
.plt-delta.same{background:var(--surface-2,#f1f2f6);color:var(--text-muted)}
.plt-hist-title{margin:26px 0 6px}
.plt-hist-card{margin-top:12px}
.plt-hist-card summary{cursor:pointer;font-size:14.5px}
.plt-hist-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:6px}
.plt-hist-weak{font-size:13.5px}
.chunks-panel{margin:14px 0}
.chunk-list{display:flex;flex-direction:column;gap:6px}
.chunk-item{border:1px solid var(--border);border-radius:var(--r-sm,12px);padding:8px 12px}
.chunk-item summary{cursor:pointer;list-style-position:inside}
.chunk-item .chunk-note{margin:8px 0}
.chunk-item .mini{margin:4px 6px 2px 0}
.plt-dim-label{font-size:14px;font-weight:600}
.plt-weak{display:inline-block;background:var(--gold-soft,#fff2d5);color:var(--gold-ink,#c9820c);border-radius:999px;padding:4px 12px;font-size:13.5px;font-weight:600;margin:2px}
.plt-auto{color:var(--accent-ink)}
.plan-cta{display:flex;gap:18px;align-items:center;justify-content:space-between;flex-wrap:wrap;margin-bottom:18px}
.plan-cta p{margin:6px 0 0}
.my-plan{margin-bottom:18px}
.mp-head{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:8px}
.mp-summary{color:var(--text-muted);line-height:1.55;margin:10px 0}
.mp-items{display:flex;flex-direction:column;gap:6px;margin:10px 0}
.mp-item{display:flex;gap:10px;align-items:center;padding:10px 12px;border:1px solid var(--border);border-radius:var(--r-sm,12px);color:var(--text);text-decoration:none}
.mp-item:hover{border-color:var(--primary)}
.mp-item .go{margin-left:auto;color:var(--primary);font-weight:700}
.mp-dot{width:9px;height:9px;border-radius:50%;background:var(--primary);flex:none}
.mp-habits{font-size:13.5px;margin:8px 0 4px}
.mp-retake{display:inline-block;margin-top:6px;font-size:13.5px;text-decoration:none}
.mp-lvl{display:inline-block;background:var(--primary-soft);border:1px solid var(--primary-soft-border);border-radius:var(--r-xs,8px);padding:2px 10px;font-weight:800;font-size:14px;color:var(--primary-soft-text)}
.mp-foot{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:10px}
.mp-item.done{opacity:.65}
.mp-item.done:hover{border-color:var(--border)}

/* landing FAQ (visible twin of the FAQPage JSON-LD in index.html) */
.ld-faq{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:10px}
.ld-faq-item{background:var(--panel);border:1px solid var(--border);border-radius:var(--r);padding:4px 18px}
.ld-faq-item summary{cursor:pointer;font-weight:700;padding:12px 0;list-style-position:inside}
.ld-faq-item[open] summary{color:var(--primary)}
.ld-faq-item p{margin:0 0 14px;color:var(--text-muted);line-height:1.55}

/* database backups tab: compact fixed table, monospace dump names */
.bk-table{width:100%;border-collapse:collapse;font-size:14px;max-width:860px}
.bk-table th,.bk-table td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--border)}
.bk-table td:first-child{white-space:nowrap;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px}
.bk-table td:last-child{text-align:right}

/* admin table kit: filter + per-page + pager controls, sortable headers */
.tk-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:12px}
.tk-bar .tk-q{flex:1;min-width:160px;max-width:320px;padding:8px 12px}
.tk-bar select{padding:8px 10px}
.tk-pager{display:flex;align-items:center;gap:8px;margin-left:auto;white-space:nowrap}
.tk-pager .mini[disabled]{opacity:.4;cursor:default}
th.tk-sort{cursor:pointer;user-select:none;white-space:nowrap}
th.tk-sort:hover{color:var(--accent)}
tr.user-deleted td{opacity:.55}

/* help / user guide (#/help) */
.help-toc{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.help-toc a{font-size:13.5px;font-weight:600;color:var(--text-muted);background:var(--surface-2);
  border:1px solid var(--border);border-radius:var(--r-pill);padding:7px 13px;white-space:nowrap}
.help-toc a:hover{color:var(--primary-soft-text);background:var(--primary-soft);border-color:var(--primary-soft-border)}
.help-sec{margin-bottom:14px;scroll-margin-top:80px}
.help-sec h2{margin:0 0 10px;font-size:19px}
.help-sec p,.help-sec li{font-size:14.5px;line-height:1.65;color:var(--text)}
.help-sec ul,.help-sec ol{margin:8px 0;padding-left:22px}
.help-sec li{margin:6px 0}
.help-img{display:block;width:100%;max-width:860px;margin:14px auto 4px;border-radius:var(--r);
  border:1px solid var(--border);box-shadow:var(--shadow-lg)}

/* drill flashcards (write / speak modes) */
.flash-drill{cursor:default}
.drill-tag{display:inline-block;font-size:12.5px;font-weight:700;color:var(--primary-soft-text);
  background:var(--primary-soft);border-radius:var(--r-pill);padding:4px 12px;margin-bottom:12px}
.flash-drill input{max-width:320px;margin:12px auto 0;text-align:center;font-size:18px;font-weight:600}
.flash-drill input.res-ok{border-color:var(--accent)}
.flash-drill input.res-bad{border-color:var(--bad)}

/* contextual (cloze) flashcards */
.flash-cloze .cloze-sent{font-size:20px;line-height:1.55;font-weight:600;margin-bottom:10px}
.cloze-gap{display:inline-block;min-width:64px;border-bottom:2px solid var(--accent);color:var(--accent);
  font-weight:800;text-align:center;padding:0 6px;letter-spacing:2px}
.dict-src{font-size:11.5px;background:var(--primary-soft);color:var(--primary-soft-text);
  border-radius:var(--r-pill);padding:2px 8px;font-weight:600}

/* account danger zone (profile) */
.danger-zone{margin-top:22px;border-color:var(--bad-soft)}
.btn.danger{background:var(--bad);color:#fff}
.btn.danger:hover{filter:brightness(1.1)}
.btn.ghost.danger{background:transparent;color:var(--bad);border:1px solid var(--bad-soft)}
.btn.ghost.danger:hover{background:var(--bad-soft)}

/* ---------- toast ---------- */
#toast{position:fixed;bottom:calc(28px + env(safe-area-inset-bottom));left:50%;transform:translateX(-50%) translateY(20px);background:var(--text);color:var(--bg);font-weight:700;padding:12px 22px;border-radius:var(--r-pill);opacity:0;pointer-events:none;transition:.25s;z-index:300;box-shadow:var(--shadow-lg);max-width:90vw;text-align:center}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- plan locks ---------- */
.lock-badge{font-size:11px;background:var(--warn-soft);border:1px solid var(--warn-border);color:var(--warn);border-radius:6px;padding:2px 7px;font-weight:600;vertical-align:middle}
.card.locked,.gram-row.locked{opacity:.7}
.card.locked:hover,.gram-row.locked:hover{border-color:var(--warn-border)}

/* ==========================================================================
   Responsive — tablet & phone
   ========================================================================== */
@media (max-width:900px){
  main{padding:24px 16px 72px}
}
@media (max-width:760px){
  :root{--nav-h:56px}
  .topbar{gap:8px;padding:0 12px}
  #navToggle{display:inline-flex}
  .status{display:none}                 /* free up header room on phones */
  .brand{font-size:18px}
  .topright{gap:6px;min-width:0}
  .icon-btn{width:36px;height:36px;font-size:16px}
  .hdr-streak{display:none}             /* streak is shown on the home page — save header room */
  .lang-switch,#srScriptToggle{display:none} /* course switching lives in the ☰ menu on phones */
  .topright .scr-toggle{display:none}        /* the script switch too — it is in the menu */
  .nav-lang{display:flex}
  .ub-admin{display:none}               /* admin gear → moved into the ☰ menu */
  body.is-admin .nav-admin{display:block}
  .plan-pill{max-width:30vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .userbox{gap:6px}
  .userbox .ub-logout{display:none}     /* logout lives in the profile page on mobile */
  .userbox .ub-name{max-width:34vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  /* nav becomes a slide-down sheet */
  body.authed .mainnav{display:none}
  body.authed.nav-open .mainnav{
    display:flex;flex-direction:column;gap:2px;
    position:fixed;top:var(--nav-h);left:0;right:0;
    background:var(--surface);border-bottom:1px solid var(--border);
    padding:10px 14px calc(12px + env(safe-area-inset-bottom));box-shadow:var(--shadow-lg);z-index:99;
    animation:sheet-in .18s ease-out;
  }
  body.authed.nav-open .mainnav a{padding:13px 12px;font-size:16px;border-radius:var(--r-sm)}
  .grid.levels{grid-template-columns:1fr 1fr;gap:12px}
  .hero{padding:22px 18px}
  .step{padding:18px 16px}
  .flash{padding:40px 20px}
  .plan-btns .btn{width:100%}
  .book-nav .btn{padding:11px 12px}
}
@media (max-width:440px){
  main{padding:20px 13px 76px}
  .grid.levels{grid-template-columns:1fr}
  h1{font-size:22px}
  /* reader controls: primary action on top (full width), the two secondary buttons paired,
     the speed pill compact on its own line (not stretched) */
  .read-toolbar .btn{flex:1 1 calc(50% - 5px);min-width:0;white-space:normal;line-height:1.15}
  .read-toolbar>#readBtn{flex:1 1 100%}
  .read-toolbar>.rate-ctl{flex:0 0 auto;align-self:flex-start}
  .read-toolbar>#readStat{flex:1 1 100%}
  .book-nav .btn{flex:1;min-width:0}
  .big-actions .btn{width:100%}
  .lvl-badge{position:static;display:inline-block;margin-bottom:8px}
  .card h3,.read-card h3{padding-right:0}
  .grades button{min-width:70px}
  .auth-card{padding:26px 20px}
}
@keyframes sheet-in{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .card:hover,.path-row:hover,.gram-row:hover,.flash:hover{transform:none}
}

/* ---------- admin: AI usage ---------- */
.aiu-totals{font-size:15px;margin-bottom:4px}
.aiu-table{width:100%;border-collapse:collapse;font-size:14px}
.aiu-table th,.aiu-table td{text-align:right;padding:8px 10px;border-bottom:1px solid var(--border)}
.aiu-table th:first-child,.aiu-table td:first-child{text-align:left}
.aiu-table thead th{color:var(--text-muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.03em}
.aiu-user td{border-top:2px solid var(--border)}
.aiu-sub td{color:var(--text-muted);font-size:13px;border-bottom:none;padding:3px 10px 3px 10px}
.aiu-cache{color:var(--accent-soft-text)}

/* ---------- CAF assessment sub-scores (Complexity / Accuracy / Fluency) ---------- */
.caf{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:12px 0}
.caf-top{display:flex;justify-content:space-between;font-size:13px;font-weight:600;margin-bottom:4px}
.caf-bar{height:7px;background:var(--surface-2);border-radius:var(--r-pill);overflow:hidden}
.caf-bar>i{display:block;height:100%;background:linear-gradient(90deg,var(--primary),var(--accent))}
@media(max-width:560px){.caf{grid-template-columns:1fr}}
.pg-tips{list-style:none;padding:0;margin:8px 0 40px;display:grid;gap:10px}
.pg-tips li{background:var(--surface);border:1px solid var(--border);border-left:3px solid var(--primary);border-radius:var(--r-sm);padding:12px 14px;font-size:14.5px;line-height:1.5}
/* playback-speed control (sits in reading/deck toolbars, next to the play buttons) */
.rate-ctl{display:inline-flex;align-items:center;gap:6px;background:var(--surface-2);border:1.5px solid var(--border);border-radius:var(--r-pill);padding:4px 12px 4px 14px;font-size:13px;font-weight:700;color:var(--text-muted);cursor:pointer;transition:border-color .15s}
.rate-ctl:hover{border-color:var(--primary-soft-border)}
.rate-select{background:transparent;border:none;color:var(--text);font:inherit;font-weight:700;font-size:13px;cursor:pointer;padding:4px 2px;width:auto;box-shadow:none}
.rate-select:focus{outline:none;box-shadow:none}

/* ===== word-frequency badge (deck + dictionary) ===== */
.freq-badge{display:inline-flex;align-items:center;gap:4px;font-size:12px;font-weight:600;padding:2px 9px;border-radius:var(--r-pill);white-space:nowrap;background:var(--surface-2);color:var(--text-muted)}
.freq-badge .fq-rank{font-weight:500;opacity:.7}
.fq-t1{background:rgba(239,68,68,.15);color:#ef4444}
.fq-t2{background:rgba(249,115,22,.16);color:#f97316}
.fq-t3{background:rgba(234,179,8,.18);color:#ca8a04}
.fq-t4{background:rgba(34,197,94,.15);color:#22c55e}
.fq-t5{background:rgba(99,102,241,.16);color:#6366f1}
.fq-t6{background:var(--surface-2);color:var(--text-muted)}
.freq-row{margin-top:10px}

/* ===== daily-goal pyramid ===== */
.daily-box:empty{display:none}
.pyramid{display:flex;flex-direction:column;align-items:center;gap:10px;margin:18px 0 30px}
.pyr-tier{background:var(--surface);border:1.5px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--shadow-sm);display:flex;align-items:center;justify-content:center;gap:12px;padding:14px 20px}
.pyr-apex{width:min(250px,64%);flex-direction:column;gap:2px;text-align:center}
.pyr-apex.lit{background:linear-gradient(135deg,var(--gold-soft),color-mix(in srgb,var(--gold-soft) 60%,var(--surface)));border-color:var(--gold-soft-border)}
.pyr-apex .pyr-ico{font-size:30px;filter:grayscale(1);opacity:.4;line-height:1}
.pyr-apex.lit .pyr-ico{filter:none;opacity:1;animation:flame 2.2s ease-in-out infinite}
@keyframes flame{0%,100%{transform:scale(1) rotate(-2deg)}50%{transform:scale(1.12) rotate(2deg)}}
.pyr-streak{font-size:34px;font-weight:800;line-height:1;color:var(--text)}
.pyr-apex.lit .pyr-streak{color:var(--gold-soft-text)}
.pyr-cap{font-size:12px;color:var(--text-muted);font-weight:600}
.pyr-week{width:min(400px,84%);flex-direction:column;gap:10px}
.pyr-week-label{font-size:13px;font-weight:700;color:var(--text-muted)}
.pyr-dots{display:flex;gap:8px}
.pyr-dots .wd{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;font-size:12px;font-weight:700;background:var(--surface-2);color:var(--text-faint);border:2px solid transparent;transition:transform .1s}
.pyr-dots .wd.met{background:linear-gradient(135deg,var(--accent),var(--accent-hover));color:var(--on-accent);border-color:transparent;box-shadow:var(--shadow-sm)}
.pyr-dots .wd.part{background:var(--surface-2);color:var(--text);border-color:var(--accent)}
.pyr-dots .wd.now{border-color:var(--gold);box-shadow:0 0 0 3px var(--gold-soft)}
.pyr-base{width:100%;justify-content:flex-start;gap:16px}
.pyr-base.done{background:linear-gradient(135deg,var(--accent-soft),color-mix(in srgb,var(--accent-soft) 55%,var(--surface)));border-color:var(--accent-soft-border)}
.pyr-ring{--pct:0;width:66px;height:66px;border-radius:50%;flex:none;background:conic-gradient(var(--primary) calc(var(--pct)*1%),var(--surface-2) 0);display:grid;place-items:center;transition:background .4s}
.pyr-base.done .pyr-ring{background:conic-gradient(var(--accent) 100%,var(--accent) 0)}
.pyr-ring-in{width:50px;height:50px;border-radius:50%;background:var(--surface);display:grid;place-items:center;font-weight:800;font-size:15px}
.pyr-base-txt{display:flex;flex-direction:column;gap:3px}
.pyr-base-txt b{font-size:16px}
.pyr-base-txt span{color:var(--text-muted);font-size:13.5px;font-weight:500}
@media(max-width:560px){.pyr-apex,.pyr-week{width:100%}.pyr-dots{justify-content:space-between;width:100%}.pyr-dots .wd{width:32px;height:32px}}
@media (prefers-reduced-motion:reduce){.pyr-apex.lit .pyr-ico{animation:none}}

/* ===== guest header CTA ===== */
.ub-cta{padding:9px 15px;font-size:14px}
@media(max-width:560px){.ub-cta{padding:8px 11px;font-size:13px}}

/* ===== public landing ===== */
.ld-hero{text-align:center;padding:44px 0 34px}
.ld-hero-in{max-width:720px;margin:0 auto}
.ld-eyebrow{display:inline-block;font-weight:700;font-size:13px;color:var(--primary-soft-text);background:var(--primary-soft);border:1px solid var(--primary-soft-border);padding:6px 14px;border-radius:var(--r-pill);margin-bottom:18px}
.ld-hero h1{font-size:clamp(30px,6vw,52px);line-height:1.08;margin:0 0 16px;letter-spacing:-.03em}
.ld-sub{font-size:clamp(16px,2.4vw,19px);color:var(--text-muted);max-width:600px;margin:0 auto 26px;line-height:1.55}
.ld-cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.ld-big{padding:15px 26px;font-size:16px}
.ld-trust{margin-top:16px;font-size:13px;color:var(--text-faint)}
.ld-sec{padding:34px 0}
.ld-h2{text-align:center;font-size:clamp(22px,3.6vw,30px);margin:0 0 6px}
.ld-sub2{text-align:center;color:var(--text-muted);margin:0 0 26px}
.lf-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;margin-top:22px}
.lf-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:22px;box-shadow:var(--shadow-sm);transition:transform .16s,box-shadow .16s}
.lf-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.lf-ico{font-size:32px;margin-bottom:10px}
.lf-card h3{margin:0 0 6px;font-size:17px}
.lf-card p{margin:0;color:var(--text-muted);font-size:14px;line-height:1.5}
.ld-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:20px}
.ld-step{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:22px;box-shadow:var(--shadow-sm)}
.ld-step>span{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:var(--r-pill);background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;font-weight:800;font-size:18px;margin-bottom:12px}
.ld-step b{display:block;margin-bottom:6px;font-size:16px}
.ld-step p{margin:0;color:var(--text-muted);font-size:14px}
@media(max-width:640px){.ld-steps{grid-template-columns:1fr}}
/* landing pricing */
.lp-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;margin-top:22px;align-items:stretch}
.lp-card{position:relative;display:flex;flex-direction:column;background:var(--surface);border:1.5px solid var(--border);border-radius:var(--r-xl);padding:26px 22px;box-shadow:var(--shadow-sm)}
.lp-card.accent{border-color:var(--primary);box-shadow:var(--shadow-md);transform:translateY(-4px)}
.lp-badge{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--gold);color:var(--on-gold);font-weight:800;font-size:12px;padding:4px 14px;border-radius:var(--r-pill);white-space:nowrap;box-shadow:var(--shadow-sm)}
.lp-card h3{margin:0 0 8px;font-size:20px}
.lp-price{font-size:38px;font-weight:800;letter-spacing:-.02em}
.lp-price span{font-size:15px;color:var(--text-muted);font-weight:600}
.lp-year{color:var(--accent-soft-text);font-size:13px;font-weight:600;margin:4px 0 14px}
.lp-feats{list-style:none;padding:0;margin:0 0 20px;flex:1;display:grid;gap:9px}
.lp-feats li{font-size:14px;padding-left:24px;position:relative;color:var(--text)}
.lp-feats li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:800}
.lp-btn{width:100%}
.ld-final{text-align:center;background:linear-gradient(135deg,var(--primary-soft),var(--accent-soft));border:1px solid var(--primary-soft-border);border-radius:var(--r-xl);padding:40px 24px;margin:34px 0}
.ld-final h2{margin:0 0 8px;font-size:clamp(22px,3.6vw,30px)}
.ld-final p{color:var(--text-muted);margin:0 0 20px}
/* landing footer */
.ld-footer{border-top:1px solid var(--border);margin-top:20px;padding:34px 0 10px}
.ld-foot-grid{display:grid;grid-template-columns:2fr 1fr 1.4fr 1.4fr;gap:22px}
.ld-foot-brand{font-weight:800;font-size:18px;margin-bottom:8px}
.ld-footer h4{margin:0 0 10px;font-size:14px;color:var(--text)}
.ld-footer a,.ld-footer .muted{display:block;color:var(--text-muted);font-size:13.5px;margin-bottom:7px;text-decoration:none}
.ld-footer a:hover{color:var(--primary)}
.ld-copy{border-top:1px solid var(--border);margin-top:22px;padding-top:16px;color:var(--text-faint);font-size:12.5px;text-align:center}
@media(max-width:720px){.ld-foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:440px){.ld-foot-grid{grid-template-columns:1fr}}

/* ===== legal pages ===== */
.legal{max-width:760px;margin:0 auto}
.legal h1{margin:6px 0 4px}
.legal-updated{color:var(--text-faint);font-size:13px;margin:0 0 20px}
.legal-lead{font-size:16px;color:var(--text);background:var(--surface-2);border-radius:var(--r);padding:14px 16px;line-height:1.6}
.legal-body h2{font-size:18px;margin:24px 0 8px}
.legal-body p,.legal-body li{color:var(--text);line-height:1.65;font-size:15px}
.legal-body ul{padding-left:22px;margin:8px 0}
.legal-body li{margin-bottom:6px}
.legal-op{background:var(--surface);border:1px solid var(--border);border-left:3px solid var(--primary);border-radius:var(--r-sm);padding:14px 16px;margin:14px 0;font-size:14px;line-height:1.7}
.legal-table{width:100%;border-collapse:collapse;margin:12px 0;font-size:14px;display:block;overflow-x:auto}
.legal-table th,.legal-table td{border:1px solid var(--border);padding:9px 11px;text-align:left;vertical-align:top}
.legal-table th{background:var(--surface-2);font-weight:700}
.legal-nav{display:flex;gap:14px;flex-wrap:wrap;margin:30px 0 40px;border-top:1px solid var(--border);padding-top:16px}
.legal-nav a{color:var(--primary);font-weight:600;font-size:14px}

/* ===== consent checkbox ===== */
.au-agree{display:flex;align-items:flex-start;gap:9px;font-size:13px;color:var(--text-muted);line-height:1.45;cursor:pointer;margin-top:2px}
.au-agree input{width:18px;height:18px;flex:none;margin-top:1px;accent-color:var(--primary);cursor:pointer}
.au-agree a{color:var(--primary)}

/* ===== cookie banner ===== */
.cookie-banner{position:fixed;left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom));z-index:250;
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:center;
  background:var(--surface);border:1px solid var(--border-strong);border-radius:var(--r-lg);
  box-shadow:var(--shadow-lg);padding:14px 18px;max-width:760px;margin:0 auto;font-size:14px;color:var(--text)}
.cookie-banner a{color:var(--primary)}
.cookie-banner .cookie-ok{padding:9px 18px;font-size:14px;white-space:nowrap}

/* ===== billing history + receipt ===== */
.pay-table{width:100%;border-collapse:collapse;font-size:14px;min-width:460px}
.pay-table th,.pay-table td{text-align:left;padding:12px 16px;border-bottom:1px solid var(--border)}
.pay-table thead th{color:var(--text-muted);font-size:12px;text-transform:uppercase;letter-spacing:.03em;font-weight:700}
.pay-table tbody tr:last-child td{border-bottom:none}
.pay-status{font-size:12px;font-weight:700;padding:3px 10px;border-radius:var(--r-pill)}
.pay-paid{background:var(--accent-soft);color:var(--accent-soft-text)}
.pay-refunded{background:var(--warn-soft);color:var(--warn)}
.pay-canceled{background:var(--bad-soft);color:var(--bad)}
.pay-pending{background:var(--warn-soft);color:var(--warn)}
/* admin events log */
.ev-table td{font-size:13px;vertical-align:middle}
.ev-info{max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--muted)}
.ev-err{color:var(--bad)}
/* admin email-duplicate resolver */
.dup-panel{border:1px solid var(--warn);background:var(--warn-soft)}
.dup-group{border-top:1px solid var(--border);padding:12px 0;margin-top:8px}
.dup-group:first-of-type{border-top:0}
.dup-head{margin-bottom:8px}
.dup-acct{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px;padding:6px 8px;border-radius:8px;cursor:pointer}
.dup-acct:hover{background:rgba(0,0,0,.04)}
.dup-acct input{margin-right:4px}
.dup-main{min-width:160px}
.dup-meta{font-size:12px}
.rcpt-actions{display:flex;gap:10px;justify-content:space-between;margin-bottom:16px;flex-wrap:wrap}
.receipt{background:#fff;color:#1a2230;border:1px solid var(--border);border-radius:var(--r-lg);padding:32px clamp(20px,4vw,40px);max-width:720px;margin:0 auto;box-shadow:var(--shadow-sm)}
.rc-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;border-bottom:2px solid #eef1f5;padding-bottom:18px;margin-bottom:20px}
.rc-brand{font-size:22px;font-weight:800}
.rc-num{text-align:right;font-size:14px;line-height:1.5}
.rc-num .muted{color:#8b95a4}
.rc-parties{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:22px}
.rc-parties h4{margin:0 0 6px;font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:#8b95a4}
.rc-parties p{margin:0;font-size:13.5px;line-height:1.6}
.rc-table{width:100%;border-collapse:collapse;margin-bottom:16px;font-size:14px}
.rc-table th{text-align:left;padding:10px 8px;border-bottom:2px solid #eef1f5;font-size:12px;text-transform:uppercase;color:#8b95a4}
.rc-table td{padding:12px 8px;border-bottom:1px solid #eef1f5}
.rc-table tfoot td{border:none;font-size:16px;padding-top:14px}
.rc-note{font-size:13px;line-height:1.6;color:#48505e;background:#f7f9fc;border-radius:10px;padding:12px 14px}
.rc-foot{font-size:12px;text-align:center;margin-top:18px;color:#8b95a4}
@media(max-width:520px){.rc-parties{grid-template-columns:1fr}}
@media print{
  .topbar,.rcpt-actions,.no-print,#toast,.cookie-banner{display:none!important}
  body{background:#fff!important;background-image:none!important}
  main{padding:0!important;max-width:none!important}
  .receipt{border:none!important;box-shadow:none!important;max-width:none!important;padding:0!important}
}

/* ===== promo codes ===== */
.promo-box{margin-top:16px}
.promo-new textarea{width:100%;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-sm);color:var(--text);padding:10px 12px;font-size:14px;resize:vertical}

/* ===== pricing card tagline + feature ticks ===== */
.plan-tag{font-size:13px;margin:-4px 0 6px;font-weight:600}
.pricing-grid .plan-feats li,.plan-card .plan-feats li{position:relative;padding-left:22px;list-style:none}
.pricing-grid .plan-feats li::before,.plan-card .plan-feats li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:800}
.plan-card .plan-feats{list-style:none;padding:0}

/* ===== AI conversation practice (Диалог) ===== */
.talk-top{align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:12px}
.talk-topic input{flex:1;min-width:220px}
.talk-log{min-height:260px;max-height:52vh;overflow-y:auto;display:flex;flex-direction:column;gap:10px;padding:16px}
.talk-msg{display:flex;gap:8px;max-width:88%}
.talk-msg .talk-body{padding:10px 14px;border-radius:14px;font-size:15px;line-height:1.5}
.talk-msg.assistant{align-self:flex-start;align-items:flex-start}
.talk-msg.assistant .talk-body{background:var(--surface-2);border:1px solid var(--border);border-bottom-left-radius:4px}
.talk-msg.user{align-self:flex-end}
.talk-msg.user .talk-body{background:var(--primary-soft);border:1px solid transparent;border-bottom-right-radius:4px}
.talk-msg .talk-tr{font-size:13px;margin-top:5px}
.talk-msg .mini{flex:none;margin-top:4px}
.talk-fix{align-self:flex-end;max-width:88%;font-size:13.5px;padding:8px 12px;border-radius:10px;
  background:var(--gold-soft);border:1px solid var(--gold-soft-border);color:var(--text)}
.talk-fix .muted{margin-top:3px}
.talk-input{display:flex;gap:8px;margin-top:12px;align-items:center}
.talk-input input{flex:1;min-width:0}

/* ===== landing: two-language cards ===== */
.ld-langs{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:18px 0 10px}
.ld-lang-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:22px 22px 16px;box-shadow:var(--shadow-sm)}
.ld-lang-head{font-size:19px;font-weight:800;display:flex;align-items:center;gap:8px;margin-bottom:8px}
.ld-lang-lv{font-size:12.5px;font-weight:700;color:var(--primary-soft-text);background:var(--primary-soft);border-radius:var(--r-pill);padding:4px 10px;margin-left:auto;white-space:nowrap}
.ld-lang-card p{color:var(--text-muted);font-size:14.5px;margin:0 0 10px}
.ld-lang-card ul{margin:0;padding-left:20px;color:var(--text);font-size:14px}
.ld-lang-card li{margin:4px 0}
@media(max-width:680px){.ld-langs{grid-template-columns:1fr}}

/* ===== user videos (по ссылке) ===== */
.uv-add{align-items:center;gap:10px}
.uv-add input{flex:1;min-width:0}
.uv-list{display:flex;flex-direction:column;gap:12px;margin-top:14px}
.uv-card .uv-head{display:flex;align-items:center;gap:10px;justify-content:space-between;margin-bottom:8px;flex-wrap:wrap}
.uv-badge{font-size:12.5px;font-weight:700;padding:4px 10px;border-radius:var(--r-pill);white-space:nowrap}
.uv-badge.ready{background:var(--accent-soft,rgba(60,180,110,.15));color:var(--accent-soft-text,#2f9e63)}
.uv-badge.pending{background:var(--gold-soft);color:var(--gold-soft-text)}
.uv-badge.error{background:var(--bad-soft);color:var(--bad)}
.uv-source{font-size:12.5px;font-weight:600;color:var(--text-muted);background:var(--surface-2);
  border:1px solid var(--border);border-radius:var(--r-pill);padding:3px 10px;white-space:nowrap;vertical-align:middle}
.uv-player iframe{width:100%;aspect-ratio:16/9;border:0;border-radius:var(--r);background:#000}

/* admin analytics: stat cards + tiny single-series bar charts */
.adm-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px;margin-bottom:14px}
.adm-card{border:1px solid var(--border);border-radius:var(--r-sm,12px);padding:12px 14px;display:flex;flex-direction:column;gap:3px}
.adm-card small{color:var(--text-muted);font-weight:600}
.adm-card b{font-size:20px;letter-spacing:-.01em}
.adm-card .muted{font-size:12.5px}
.adm-chart-title{margin:8px 0 6px}
.adm-chart{display:flex;align-items:flex-end;gap:3px;height:120px;margin:4px 0 16px;padding-top:16px}
.adm-col{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%;min-width:0;position:relative;cursor:default}
.adm-col i{display:block;width:100%;max-width:26px;background:var(--primary);border-radius:4px 4px 0 0;min-height:0;transition:opacity .15s}
.adm-col:hover i{opacity:.75}
.adm-col small{font-size:10.5px;color:var(--text-muted);white-space:nowrap;height:14px;margin-top:3px;overflow:visible}
.adm-val{position:absolute;top:-15px;font-size:10.5px;font-weight:700;color:var(--text-muted);white-space:nowrap}

/* New-version prompt: appears once when a deploy changes the build under an open tab. */
.upd-bar{position:fixed;left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom));z-index:320;
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:center;
  background:var(--surface);border:1px solid var(--primary-soft-border);border-radius:var(--r-lg);
  box-shadow:var(--shadow-lg);padding:13px 18px;max-width:620px;margin:0 auto;font-size:14px;color:var(--text)}
.upd-bar .upd-btn{padding:9px 20px;font-weight:700;white-space:nowrap;border:none;border-radius:var(--r-pill);
  background:var(--primary);color:#fff;cursor:pointer}
.upd-bar .upd-btn:hover{filter:brightness(1.05)}
.upd-bar .upd-close{background:none;border:none;color:var(--text-muted);font-size:16px;cursor:pointer;padding:4px 6px;line-height:1}