/* =========================================================================
   ATU STUDY HUB — Advanced study app
   Design system + app shell + components (mobile-first, light/dark)
   ========================================================================= */

:root{
  /* light */
  --bg:#f7f6f3;
  --bg-grad-1:#f7f6f3;
  --bg-grad-2:#f7f6f3;
  --panel:#ffffff;
  --panel-2:#faf9f7;
  --panel-3:#f0eeea;
  --text:#1f1e1b;
  --text-2:#54524b;
  --muted:#8c887d;
  --border:#e7e4dc;
  --border-2:#dcd8cd;
  --accent:#1d4e89;       /* classic royal-blue; overridden per course */
  --accent-ink:#ffffff;
  --accent-soft:rgba(29,78,137,.10);
  --good:#16a34a; --good-soft:rgba(22,163,74,.12);
  --bad:#e23b3b;  --bad-soft:rgba(226,59,59,.12);
  --warn:#e0930b; --warn-soft:rgba(224,147,11,.14);
  --ring-track:#e6eaf2;
  --shadow-s:0 1px 2px rgba(20,28,55,.05),0 4px 14px rgba(20,28,55,.05);
  --shadow-m:0 6px 24px rgba(20,28,55,.10);
  --shadow-l:0 20px 60px rgba(20,28,55,.18);
  --glass:rgba(255,255,255,.72);
  --sidebar-w:264px;
  --topbar-h:60px;
  --r-s:10px; --r-m:16px; --r-l:22px; --r-xl:28px;
  --font:-apple-system,'Segoe UI Variable Text','Segoe UI',system-ui,Roboto,'Helvetica Neue',Arial,sans-serif;
  --mono:ui-monospace,'Cascadia Code',Consolas,'SF Mono',Menlo,monospace;
}
[data-theme="dark"]{
  /* warm dark: charcoal surfaces, cream text, terracotta accent */
  --bg:#262624;
  --bg-grad-1:#2b2a27;
  --bg-grad-2:#282725;
  --panel:#30302e;
  --panel-2:#383735;
  --panel-3:#403f3c;
  --text:#f5f4ef;
  --text-2:#c2c0b6;
  --muted:#918f86;
  --border:#42413d;
  --border-2:#4d4c47;
  --accent:#d97757;
  --accent-soft:rgba(217,119,87,.16);
  --good:#78c286; --good-soft:rgba(120,194,134,.14);
  --bad:#e5735f;  --bad-soft:rgba(229,115,95,.15);
  --warn:#d9a854; --warn-soft:rgba(217,168,84,.16);
  --ring-track:#42413d;
  --shadow-s:0 1px 2px rgba(0,0,0,.35),0 4px 14px rgba(0,0,0,.28);
  --shadow-m:0 8px 30px rgba(0,0,0,.4);
  --shadow-l:0 24px 70px rgba(0,0,0,.55);
  --glass:rgba(48,48,46,.78);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);color:var(--text);line-height:1.55;
  background:var(--bg);
  min-height:100vh;-webkit-font-smoothing:antialiased;
  transition:background .3s ease,color .3s ease;
}
::selection{background:var(--accent);color:#fff}
button{font-family:inherit;cursor:pointer}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{line-height:1.2;margin:0;letter-spacing:-.02em}
img{max-width:100%}
.mono{font-family:var(--mono)}

/* scrollbars */
*::-webkit-scrollbar{width:10px;height:10px}
*::-webkit-scrollbar-thumb{background:var(--border-2);border-radius:20px;border:2px solid transparent;background-clip:content-box}
*::-webkit-scrollbar-thumb:hover{background:var(--muted)}

/* ============================ APP SHELL ============================ */
.shell{position:relative;z-index:1;min-height:100vh}

/* -------- Brand (top-left) — taps through to the dashboard -------- */
.brand{display:flex;align-items:center;gap:11px;min-width:0;cursor:pointer;border-radius:14px;
  padding:4px 8px 4px 4px;margin-left:-4px;transition:background .18s ease,transform .18s ease}
.brand:hover{background:var(--panel-3)}
.brand:active{transform:scale(.985)}
.brand:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.brandmark{
  flex:none;width:38px;height:38px;border-radius:11px;display:grid;place-items:center;color:#fff;font-weight:900;font-size:.9rem;
  background:#1d4e89;box-shadow:0 2px 10px rgba(29,78,137,.28)
}
.brand__txt{font-weight:800;font-size:1.02rem;white-space:nowrap;line-height:1.15}
.brand__txt small{display:block;font-weight:600;font-size:.64rem;color:var(--muted);letter-spacing:.13em;text-transform:uppercase}

.homebtn{
  flex:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--border);background:var(--panel);
  color:var(--text-2);display:grid;place-items:center;font-size:1.15rem;line-height:1;transition:.18s
}
.homebtn:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-1px)}
.homebtn.active{background:var(--accent-soft);border-color:color-mix(in srgb,var(--accent) 45%,transparent);color:var(--accent)}

.miniprog{display:flex;align-items:center;gap:9px;flex:none;width:126px}
.miniprog .bar{flex:1;height:7px;border-radius:20px;background:var(--panel-3);overflow:hidden}
.miniprog .bar i{display:block;height:100%;border-radius:20px;background:var(--accent);width:0;transition:width .6s ease}
.miniprog b{font-size:.78rem}

/* -------- Topbar -------- */
.main{min-width:0;display:flex;flex-direction:column}
.topbar{
  position:sticky;top:0;height:var(--topbar-h);z-index:30;display:flex;align-items:center;gap:12px;
  padding:0 18px;background:var(--glass);backdrop-filter:saturate(160%) blur(14px);border-bottom:1px solid var(--border)
}
.iconbtn{
  flex:none;width:40px;height:40px;border-radius:11px;border:1px solid var(--border);background:var(--panel);color:var(--text);
  display:grid;place-items:center;font-size:1.05rem;transition:.16s
}
.iconbtn:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}
.crumb{display:flex;align-items:center;gap:8px;font-weight:700;font-size:.96rem;min-width:0}
.crumb .sep{color:var(--muted);font-weight:400}
.crumb .dim{color:var(--muted);font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.topbar__spacer{flex:1}
.searchbtn{
  display:flex;align-items:center;gap:10px;height:40px;padding:0 12px 0 14px;border-radius:11px;border:1px solid var(--border);
  background:var(--panel);color:var(--muted);font-size:.86rem;font-weight:500;transition:.16s;min-width:200px
}
.searchbtn:hover{border-color:var(--accent);color:var(--text)}
.searchbtn .kbd{margin-left:auto;font-size:.66rem;font-weight:700;background:var(--panel-3);border:1px solid var(--border);border-radius:6px;padding:2px 6px;color:var(--text-2)}
@media (max-width:560px){.searchbtn{min-width:auto}.searchbtn .lbl,.searchbtn .kbd{display:none}}

/* -------- View area -------- */
.view{flex:1;padding:26px clamp(16px,3.4vw,40px) 128px;max-width:1180px;width:100%;margin:0 auto;animation:viewin .4s ease}
@keyframes viewin{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* ============================ DASHBOARD ============================ */
.hero{
  position:relative;overflow:hidden;border-radius:var(--r-xl);padding:30px clamp(20px,4vw,42px);margin-bottom:26px;color:#fff;
  background:#1d4e89;box-shadow:var(--shadow-m)
}
.hero::after{content:"";position:absolute;inset:0;background:none;pointer-events:none}
.hero__eyebrow{font-size:.74rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;opacity:.85}
.hero h1{font-size:clamp(1.55rem,3.6vw,2.4rem);font-weight:900;margin:10px 0 8px;max-width:18ch}
.hero p{opacity:.92;max-width:54ch;margin:0 0 20px;font-size:clamp(.95rem,1.6vw,1.05rem)}
.hero__row{display:flex;flex-wrap:wrap;gap:22px;align-items:center;position:relative}
.hero__stats{display:flex;gap:26px;flex-wrap:wrap}
.hstat b{display:block;font-size:1.6rem;font-weight:900;line-height:1}
.hstat span{font-size:.78rem;opacity:.85;font-weight:600}

.section-title{display:flex;align-items:center;gap:12px;margin:30px 2px 16px}
.section-title h2{font-size:1.16rem;font-weight:800}
.section-title .count{font-size:.74rem;font-weight:700;color:var(--muted);background:var(--panel);border:1px solid var(--border);padding:3px 10px;border-radius:20px}
.section-title .grow{flex:1}
.linkbtn{font-size:.82rem;font-weight:700;color:var(--accent)}

.course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:16px}
.ccard{
  position:relative;background:var(--panel);border:1px solid var(--border);border-radius:var(--r-l);padding:20px;
  box-shadow:var(--shadow-s);transition:.2s;overflow:hidden;text-align:left;display:flex;flex-direction:column;gap:14px
}
.ccard::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:color-mix(in srgb,var(--ca) 55%,var(--border))}
.ccard:hover{transform:translateY(-4px);box-shadow:var(--shadow-l);border-color:color-mix(in srgb,var(--ca) 40%,var(--border))}
.ccard__top{display:flex;align-items:center;gap:13px}
.ccard__ic{
  flex:none;width:50px;height:50px;border-radius:14px;display:grid;place-items:center;font-weight:900;font-size:.82rem;
  color:var(--ca);background:color-mix(in srgb,var(--ca) 16%,transparent);
  border:1px solid color-mix(in srgb,var(--ca) 28%,transparent)
}
.ccard__code{font-size:.72rem;font-weight:800;letter-spacing:.06em;color:var(--ca)}
/* buttons don't inherit colour — name it, or the title falls back to UA black */
.ccard__name{font-size:1.02rem;font-weight:800;margin-top:1px;color:var(--text)}
[data-theme="dark"] .ccard__name,[data-theme="dark"] .coursehead h1{color:#ffffff}
.ccard__meta{display:flex;align-items:center;gap:14px;color:var(--muted);font-size:.78rem;font-weight:600}
.ccard__meta .dot{width:4px;height:4px;border-radius:50%;background:var(--muted)}
.ccard__foot{display:flex;align-items:center;gap:12px;margin-top:auto}
.ccard__bar{flex:1;height:8px;border-radius:20px;background:var(--panel-3);overflow:hidden}
.ccard__bar i{display:block;height:100%;border-radius:20px;background:var(--ca);width:0;transition:width .7s ease}
.ccard__pct{font-size:.8rem;font-weight:800;color:var(--text)}

/* progress ring — gradient stroke, travelling tip, live count-up */
.ring{--s:108px;--sw:9px;width:var(--s);height:var(--s);flex:none;position:relative;display:grid;place-items:center}
.ring svg{transform:rotate(-90deg);width:100%;height:100%;overflow:visible}
.ring .trk{fill:none;stroke:var(--ring-track);stroke-width:var(--sw);opacity:.9}
.ring .ind{
  fill:none;stroke-width:var(--sw);stroke-linecap:round;
  stroke-dasharray:var(--circ);stroke-dashoffset:var(--circ);
  filter:drop-shadow(0 0 6px color-mix(in srgb,var(--ca,var(--accent)) 45%,transparent))
}
.ring .rg0{stop-color:var(--ca,var(--accent))}
.ring .rg1{stop-color:color-mix(in srgb,var(--ca,var(--accent)) 45%,#ffffff)}
/* the bright bead that rides the end of the arc */
.ring__tip{position:absolute;inset:0;transform:rotate(var(--a,0deg));opacity:0;transition:opacity .3s ease;pointer-events:none}
.ring__tip::before{
  content:"";position:absolute;left:50%;top:2px;width:var(--sw);height:var(--sw);margin-left:calc(var(--sw) / -2);
  border-radius:50%;background:color-mix(in srgb,var(--ca,var(--accent)) 30%,#ffffff);
  box-shadow:0 0 10px color-mix(in srgb,var(--ca,var(--accent)) 80%,transparent)
}
.ring__txt{position:absolute;inset:0;display:grid;place-items:center;text-align:center;line-height:1.1}
.ring__txt b{font-size:calc(var(--s) * .26);font-weight:900;line-height:1;letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.ring__txt b em{font-size:.52em;font-style:normal;font-weight:800;margin-left:1px;color:var(--muted)}
.ring__txt span{font-size:.62rem;opacity:.8;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.ring__sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ============================ COURSE / CHAPTERS ============================ */
.coursehead{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-bottom:8px}
.coursehead__ic{flex:none;width:62px;height:62px;border-radius:18px;display:grid;place-items:center;font-weight:900;font-size:1rem;color:var(--ca);background:color-mix(in srgb,var(--ca) 16%,transparent);border:1px solid color-mix(in srgb,var(--ca) 28%,transparent)}
.coursehead h1{font-size:clamp(1.4rem,3vw,2rem);font-weight:900}
.coursehead .code{color:var(--ca);font-weight:800;font-size:.82rem;letter-spacing:.06em}
.toolrow{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0 22px}

.chaplist{display:flex;flex-direction:column;gap:12px}
.chap{
  display:flex;align-items:center;gap:16px;background:var(--panel);border:1px solid var(--border);border-radius:var(--r-m);
  padding:16px 18px;box-shadow:var(--shadow-s);transition:.18s;text-align:left;width:100%
}
.chap:hover{transform:translateX(4px);border-color:color-mix(in srgb,var(--ca) 40%,var(--border));box-shadow:var(--shadow-m)}
.chap__no{flex:none;width:42px;height:42px;border-radius:12px;display:grid;place-items:center;font-weight:900;font-size:1rem;background:var(--accent-soft);color:var(--ca)}
.chap__no.done{background:var(--good);color:#fff}
.chap__body{flex:1;min-width:0}
.chap__title{font-weight:700;font-size:1rem}
.chap__sub{font-size:.78rem;color:var(--muted);font-weight:600;margin-top:2px;display:flex;gap:12px;flex-wrap:wrap}
.chap__sub .b{color:var(--good)}
.chap__go{flex:none;color:var(--muted);font-size:1.3rem;transition:.18s}
.chap:hover .chap__go{color:var(--ca);transform:translateX(3px)}

/* ============================ MODE SWITCH ============================ */
.modes{display:inline-flex;background:var(--panel);border:1px solid var(--border);border-radius:13px;padding:4px;gap:3px;box-shadow:var(--shadow-s)}
.mode{border:none;background:none;color:var(--text-2);padding:8px 16px;border-radius:9px;font-size:.84rem;font-weight:700;transition:.16s;display:flex;align-items:center;gap:7px}
.mode:hover{color:var(--text)}
.mode.active{background:var(--ca);color:#fff;box-shadow:0 4px 12px color-mix(in srgb,var(--ca) 40%,transparent)}

/* ============================ STUDY NOTES ============================ */
.notes{background:var(--panel);border:1px solid var(--border);border-radius:var(--r-l);padding:clamp(18px,3vw,30px);box-shadow:var(--shadow-s);max-width:820px}
.notes h3{font-size:1.12rem;font-weight:800;margin:22px 0 8px;padding-left:13px;border-left:4px solid var(--ca)}
.notes h3:first-child{margin-top:0}
.notes h4{font-size:.96rem;font-weight:700;color:var(--accent);margin:14px 0 4px}
.notes p{color:var(--text-2);margin:8px 0}
.notes ul,.notes ol{margin:8px 0;padding-left:22px;color:var(--text-2)}
.notes li{margin:5px 0}
.notes li strong,.notes p strong{color:var(--text)}
.notes code{font-family:var(--mono);font-size:.84em;background:var(--panel-3);border:1px solid var(--border);padding:.12em .4em;border-radius:6px;color:var(--accent)}
.notes pre{background:var(--panel-3);border:1px solid var(--border);border-radius:var(--r-s);padding:14px 16px;overflow-x:auto;margin:12px 0}
.notes pre code{background:none;border:none;padding:0;color:var(--text-2)}
.notes table{width:100%;border-collapse:collapse;margin:12px 0;font-size:.88rem}
.notes th,.notes td{border:1px solid var(--border);padding:8px 11px;text-align:left}
.notes th{background:var(--panel-3);font-weight:700}

.kp-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;margin-top:20px}
.kp{background:var(--panel);border:1px solid var(--border);border-radius:var(--r-m);padding:14px 16px;box-shadow:var(--shadow-s);transition:.16s}
.kp:hover{border-color:color-mix(in srgb,var(--ca) 40%,var(--border));transform:translateY(-2px)}
.kp b{display:block;font-size:.9rem;font-weight:800;color:var(--ca);margin-bottom:4px}
.kp span{font-size:.82rem;color:var(--text-2)}

/* ============================ QUIZ ============================ */
.quizwrap{max-width:760px;margin:0 auto}
.qbar{display:flex;align-items:center;gap:14px;margin-bottom:18px}
.qbar .track{flex:1;height:9px;border-radius:20px;background:var(--panel-3);overflow:hidden}
.qbar .track i{display:block;height:100%;border-radius:20px;background:var(--ca);width:0;transition:width .4s ease}
.qbar .meta{font-size:.8rem;font-weight:700;color:var(--text-2);white-space:nowrap}
.qbar .streak{display:flex;align-items:center;gap:5px;font-size:.8rem;font-weight:800;color:var(--warn)}

.qcard{background:var(--panel);border:1px solid var(--border);border-radius:var(--r-l);padding:clamp(20px,3vw,30px);box-shadow:var(--shadow-m);animation:pop .3s ease}
@keyframes pop{from{opacity:0;transform:scale(.985) translateY(6px)}to{opacity:1;transform:none}}
.qcard__tag{font-size:.7rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.qcard__q{font-size:clamp(1.05rem,2.2vw,1.32rem);font-weight:700;margin:8px 0 22px;line-height:1.4}
.opts{display:flex;flex-direction:column;gap:11px}
.opt{
  display:flex;align-items:center;gap:14px;width:100%;text-align:left;background:var(--panel-2);border:2px solid var(--border);
  color:var(--text);padding:15px 16px;border-radius:14px;font-size:.98rem;font-weight:500;transition:.15s;position:relative
}
.opt:hover:not(:disabled){border-color:var(--ca);background:var(--accent-soft);transform:translateY(-1px)}
.opt:disabled{cursor:default}
.opt .key{flex:none;width:30px;height:30px;border-radius:9px;display:grid;place-items:center;font-weight:800;font-size:.85rem;background:var(--panel);border:1px solid var(--border);color:var(--text-2);transition:.15s}
.opt .tx{flex:1}
.opt .rs{flex:none;font-weight:900;opacity:0;transition:.15s;font-size:1.1rem}
.opt.correct{border-color:var(--good);background:var(--good-soft)}
.opt.correct .key{background:var(--good);border-color:var(--good);color:#fff}
.opt.correct .rs{opacity:1;color:var(--good)}
.opt.wrong{border-color:var(--bad);background:var(--bad-soft)}
.opt.wrong .key{background:var(--bad);border-color:var(--bad);color:#fff}
.opt.wrong .rs{opacity:1;color:var(--bad)}
.opt.dim{opacity:.55}

.exp{margin-top:16px;border-radius:14px;padding:15px 17px;background:var(--panel-2);border:1px solid var(--border);border-left:4px solid var(--accent);font-size:.92rem;color:var(--text-2);display:none}
.exp.show{display:block;animation:pop .25s ease}
.exp .v{font-weight:800;margin-right:6px}
.exp .v.ok{color:var(--good)} .exp .v.no{color:var(--bad)}
.exp b{color:var(--text)}

.qfoot{display:flex;align-items:center;gap:12px;margin-top:20px}
.qfoot .grow{flex:1}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:12px;font-weight:700;font-size:.92rem;padding:12px 22px;transition:.16s}
.btn--p{background:var(--ca,var(--accent));color:#fff;box-shadow:0 6px 16px color-mix(in srgb,var(--ca,var(--accent)) 36%,transparent)}
.btn--p:hover{filter:brightness(1.06);transform:translateY(-2px)}
.btn--ghost{background:var(--panel);border-color:var(--border);color:var(--text)}
.btn--ghost:hover{border-color:var(--ca);color:var(--ca)}
.btn--sm{padding:9px 15px;font-size:.84rem;border-radius:10px}
.btn:disabled{opacity:.5;pointer-events:none}
.bookmark{margin-left:auto;background:none;border:1px solid var(--border);border-radius:10px;width:40px;height:40px;display:grid;place-items:center;color:var(--muted);font-size:1.1rem}
.bookmark.on{color:var(--warn);border-color:var(--warn)}

/* results */
.result{max-width:620px;margin:0 auto;text-align:center;background:var(--panel);border:1px solid var(--border);border-radius:var(--r-xl);padding:clamp(26px,5vw,46px);box-shadow:var(--shadow-l);animation:pop .4s ease}
.result .ring{--s:160px;margin:0 auto 14px}
.result .ind{stroke:var(--ca)}
.result h2{font-size:1.7rem;font-weight:900}
.result .grade{font-size:.9rem;font-weight:700;color:var(--text-2);margin-top:4px}
.result .msg{color:var(--text-2);margin:10px 0 22px}
.result__stats{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin-bottom:24px}
.rstat{background:var(--panel-2);border:1px solid var(--border);border-radius:14px;padding:12px 18px;min-width:92px}
.rstat b{display:block;font-size:1.4rem;font-weight:900}
.rstat span{font-size:.72rem;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.05em}
.result__btns{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}

/* ============================ FLASHCARDS ============================ */
.fcwrap{max-width:600px;margin:0 auto;text-align:center}
.fcmeta{font-size:.82rem;font-weight:700;color:var(--text-2);margin-bottom:14px}
.flash{perspective:1600px;height:340px;margin-bottom:18px;cursor:pointer}
.flash__in{position:relative;width:100%;height:100%;transition:transform .6s cubic-bezier(.4,.2,.2,1);transform-style:preserve-3d}
.flash.flip .flash__in{transform:rotateY(180deg)}
.flash__face{position:absolute;inset:0;backface-visibility:hidden;border-radius:var(--r-xl);padding:30px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;box-shadow:var(--shadow-m);border:1px solid var(--border)}
.flash__front{background:var(--panel)}
.flash__back{background:var(--ca);color:#fff;transform:rotateY(180deg)}
.flash__hint{font-size:.7rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;opacity:.7}
.flash__q{font-size:1.2rem;font-weight:700;line-height:1.4}
.flash__a{font-size:1.3rem;font-weight:800}
.flash__e{font-size:.88rem;opacity:.92;font-weight:500;line-height:1.5}
.fcbtns{display:flex;gap:10px;justify-content:center;align-items:center}

/* exam config */
.examcfg{max-width:560px;margin:0 auto;background:var(--panel);border:1px solid var(--border);border-radius:var(--r-xl);padding:clamp(22px,4vw,36px);box-shadow:var(--shadow-m);text-align:center}
.examcfg h2{font-size:1.5rem;font-weight:900;margin-bottom:6px}
.examcfg p{color:var(--text-2);margin-bottom:22px}
.optrow{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:14px}
.pillopt{border:2px solid var(--border);background:var(--panel-2);color:var(--text);border-radius:12px;padding:10px 18px;font-weight:700;font-size:.9rem;transition:.15s}
.pillopt.active{border-color:var(--ca);background:var(--accent-soft);color:var(--ca)}
.cfg-label{font-size:.74rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:18px 0 8px}
/* type-your-own time limit, styled as one of the pills */
.pillnum{display:inline-flex;align-items:center;gap:6px;padding:10px 14px;cursor:text}
.pillnum input{width:3.4em;border:0;background:transparent;color:inherit;font:inherit;font-weight:800;text-align:right;padding:0;-moz-appearance:textfield}
.pillnum input::-webkit-outer-spin-button,.pillnum input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.pillnum input:focus{outline:none}
.pillnum input::placeholder{color:var(--muted);font-weight:700}
.pillnum:focus-within{border-color:var(--ca)}

/* exam topic multi-select dropdown */
.tsel{position:relative;text-align:left;margin-bottom:6px}
.tsel__btn{display:flex;align-items:center;gap:10px;width:100%;border:2px solid var(--border);background:var(--panel-2);color:var(--text);border-radius:12px;padding:12px 16px;font-weight:700;font-size:.9rem;text-align:left;transition:.15s}
.tsel__btn:hover{border-color:var(--ca)}
.tsel.open .tsel__btn{border-color:var(--ca);background:var(--accent-soft);color:var(--ca)}
.tsel__btn .grow{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tsel__caret{transition:transform .18s}
.tsel.open .tsel__caret{transform:rotate(180deg)}
.tsel__menu{display:none;position:absolute;z-index:40;left:0;right:0;top:calc(100% + 6px);max-height:300px;overflow-y:auto;background:var(--panel);border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow-m);padding:6px}
.tsel.open .tsel__menu{display:block;animation:fade .15s ease}
.tsel__opt{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;cursor:pointer;font-size:.88rem;font-weight:600;line-height:1.35}
.tsel__opt:hover{background:var(--panel-2)}
.tsel__opt input{accent-color:var(--ca);width:16px;height:16px;flex:none;cursor:pointer}
.tsel__opt .n{margin-left:auto;flex:none;font-size:.76rem;font-weight:800;color:var(--muted)}
.tsel__opt--mix{font-weight:800}
.tsel__sep{height:1px;background:var(--border);margin:5px 8px}
.tsel__hint{font-size:.8rem;color:var(--muted);margin-bottom:6px}
.tsel__hint b{color:var(--bad)}

/* ============================ COMMAND PALETTE ============================ */
.palette{position:fixed;inset:0;z-index:90;display:none;align-items:flex-start;justify-content:center;padding:12vh 16px 16px;background:rgba(8,11,20,.5);backdrop-filter:blur(4px)}
.palette.open{display:flex;animation:fade .15s ease}
@keyframes fade{from{opacity:0}to{opacity:1}}
.palette__box{width:100%;max-width:620px;background:var(--panel);border:1px solid var(--border);border-radius:var(--r-l);box-shadow:var(--shadow-l);overflow:hidden;animation:pop .2s ease}
.palette__in{display:flex;align-items:center;gap:12px;padding:16px 18px;border-bottom:1px solid var(--border)}
.palette__in input{flex:1;border:none;background:none;color:var(--text);font-size:1.05rem;font-family:inherit;outline:none}
.palette__in .esc{font-size:.66rem;font-weight:700;color:var(--muted);border:1px solid var(--border);border-radius:6px;padding:3px 7px}
.palette__list{max-height:54vh;overflow-y:auto;padding:8px}
.presult{display:flex;align-items:center;gap:13px;width:100%;text-align:left;border:none;background:none;color:var(--text);padding:11px 12px;border-radius:11px;transition:.12s}
.presult:hover,.presult.cur{background:var(--accent-soft)}
.presult .pic{flex:none;width:34px;height:34px;border-radius:9px;display:grid;place-items:center;font-size:.62rem;font-weight:800;color:#fff;background:var(--ca,var(--accent))}
.presult .pt{flex:1;min-width:0}
.presult .pt b{display:block;font-size:.9rem;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.presult .pt span{font-size:.74rem;color:var(--muted)}
.presult .ptype{font-size:.66rem;font-weight:800;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);background:var(--panel-3);padding:3px 8px;border-radius:20px}
.palette__empty{padding:30px;text-align:center;color:var(--muted);font-size:.9rem}

/* ============================ TOPBAR RESPONSIVE ============================ */
@media (max-width:1180px){ .crumb{display:none} }
@media (max-width:980px){ .miniprog{display:none} }
@media (max-width:760px){
  .topbar{padding:0 12px;gap:8px}
  .brand__txt{display:none}
  .semchip{display:none}
}

/* utils */
.empty{text-align:center;color:var(--muted);padding:60px 20px;border:1px dashed var(--border);border-radius:var(--r-l)}
.hide{display:none!important}
[hidden]{display:none!important}
.spin{margin:80px auto;width:38px;height:38px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:rot .8s linear infinite}
@keyframes rot{to{transform:rotate(360deg)}}
.chiprow{display:flex;flex-wrap:wrap;gap:8px}
.chip{font-size:.78rem;font-weight:700;color:var(--text-2);background:var(--panel);border:1px solid var(--border);padding:6px 12px;border-radius:20px}
.fade-up{animation:viewin .45s ease both}

@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto}}

/* =========================================================================
   ATU AUTH · PROFILE · LOGO WATERMARK  (appended)
   ========================================================================= */

/* ---- logo in the sidebar brand ---- */
.brandmark--img{
  background:#fff;object-fit:contain;padding:3px;border-radius:11px;
  box-shadow:0 6px 16px rgba(29,78,137,.30);border:1px solid var(--border)
}

/* ---- account menu (topbar) ---- */
.acct-wrap{position:relative;flex:none}
.acctbtn{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--border);background:#1d4e89;color:#fff;
  font-weight:900;font-size:.95rem;display:grid;place-items:center;transition:.16s
}
.acctbtn:hover{transform:translateY(-1px);box-shadow:var(--shadow-m)}
.account{
  position:absolute;right:0;top:calc(100% + 10px);width:236px;padding:12px;z-index:80;
  background:var(--glass);backdrop-filter:blur(22px) saturate(180%);
  border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow-l);
  display:flex;flex-direction:column;gap:2px;animation:viewin .2s ease both
}
.account__txt{padding:4px 8px 10px;border-bottom:1px solid var(--border);margin-bottom:6px;line-height:1.25}
.account__txt b{display:block;font-size:.86rem;font-weight:800;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.account__txt small{font-size:.72rem;color:var(--muted);font-weight:600}
.account__row{
  display:flex;align-items:center;gap:9px;width:100%;border:none;background:none;color:var(--text-2);
  padding:9px 10px;border-radius:11px;font-size:.86rem;font-weight:600;text-align:left;transition:.14s
}
.account__row:hover{background:var(--panel-3);color:var(--text)}
.account__row--out:hover{background:var(--bad-soft);color:var(--bad)}

/* ---- logo watermark on learning pages ---- */
body.is-learning .view::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:url("../img/atu-logo.png") no-repeat center 46%;
  background-size:min(440px,58%);opacity:.05
}
[data-theme="dark"] body.is-learning .view::before,
body.is-learning [data-theme="dark"] .view::before{opacity:.06}
body.is-learning .view>*{position:relative;z-index:1}

/* ---- login screen ---- */
body.auth-locked .shell,body.auth-locked .dock,body.auth-locked #leafCanvas{display:none!important}
body.sem-locked .shell,body.sem-locked .dock{display:none!important}
#authScreen{position:fixed;inset:0;z-index:200;display:grid;place-items:center;padding:22px;overflow:auto}
.auth-bg{position:fixed;inset:0;z-index:-1;
  background:url("../img/atu-logo.png") no-repeat center 120%/520px, var(--bg)}
.auth-card{width:100%;max-width:410px;background:var(--panel);border:1px solid var(--border);border-radius:22px;
  padding:30px 28px 24px;box-shadow:0 30px 80px -30px rgba(10,20,40,.55);text-align:center;animation:viewin .4s ease both}
.auth-logo{width:78px;height:78px;object-fit:contain;background:#fff;border-radius:18px;padding:6px;border:1px solid var(--border);box-shadow:0 8px 22px rgba(29,78,137,.28)}
.auth-title{font-size:1.5rem;font-weight:900;margin:14px 0 2px}
.auth-sub{font-size:.74rem;color:var(--muted);font-weight:600;letter-spacing:.08em;text-transform:uppercase;margin:0 0 22px}
.auth-label{display:block;text-align:left;font-size:.74rem;font-weight:700;color:var(--text-2);margin:0 0 6px;letter-spacing:.02em}
.auth-input{width:100%;height:46px;padding:0 14px;border-radius:12px;border:1px solid var(--border-2);background:var(--panel-2);color:var(--text);font-size:1rem;font-weight:600;outline:none;transition:.15s;margin-bottom:14px}
.auth-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);background:var(--panel)}
.auth-field{text-align:left}
.auth-hint{font-size:.82rem;color:var(--text-2);line-height:1.45;text-align:left;background:var(--panel-2);border:1px solid var(--border);border-radius:12px;padding:10px 12px;margin:2px 0 16px}
.auth-hint.is-ok{color:var(--text);border-color:color-mix(in srgb,var(--good) 40%,var(--border));background:var(--good-soft)}
.auth-hint.is-bad{color:var(--text);border-color:color-mix(in srgb,var(--bad) 40%,var(--border));background:var(--bad-soft)}
.auth-remember{display:flex;align-items:center;gap:9px;font-size:.82rem;font-weight:600;color:var(--text-2);text-align:left;margin:0 2px 16px;cursor:pointer}
.auth-remember input{width:16px;height:16px;accent-color:var(--accent);cursor:pointer}
.auth-btn{width:100%;height:48px;border:none;border-radius:12px;background:var(--accent);color:var(--accent-ink,#fff);font-size:1rem;font-weight:800;cursor:pointer;transition:.15s}
.auth-btn:hover:not(:disabled){filter:brightness(1.06);transform:translateY(-1px)}
.auth-btn:disabled{opacity:.5;cursor:not-allowed}
.auth-foot{font-size:.74rem;color:var(--muted);margin-top:16px}

/* ---- profile page ---- */
.profilehead{display:flex;flex-wrap:wrap;align-items:center;gap:16px;background:var(--panel);border:1px solid var(--border);border-radius:var(--r-l,18px);padding:22px;margin-bottom:18px}
.profile__av{flex:none;width:66px;height:66px;border-radius:18px;display:grid;place-items:center;font-size:1.8rem;font-weight:900;color:#fff;background:#1d4e89;box-shadow:0 4px 14px rgba(29,78,137,.3)}
.profilehead h1{font-size:clamp(1.3rem,2.6vw,1.7rem);font-weight:900;margin:2px 0}
.pcard{max-width:520px;background:var(--panel);border:1px solid var(--border);border-radius:var(--r-l,18px);padding:22px}
.pcard__h{display:flex;align-items:center;gap:12px;margin-bottom:6px}
.pcard__h h2{font-size:1.15rem;font-weight:800;margin:0}
.pmut{font-size:.88rem;color:var(--text-2);line-height:1.5;margin:0 0 18px}
.pmsg{font-size:.84rem;font-weight:600;min-height:1.1em;margin:2px 0 14px}
.pmsg.is-ok{color:var(--good)}
.pmsg.is-bad{color:var(--bad)}
.pill{font-size:.7rem;font-weight:800;padding:4px 10px;border-radius:20px;letter-spacing:.02em}
.pill--ok{color:var(--good);background:var(--good-soft)}
.pill--warn{color:var(--warn);background:var(--warn-soft)}
.pill--bad{color:var(--bad);background:var(--bad-soft)}

/* ---- password nudge on dashboard ---- */
.nudge{display:flex;align-items:center;gap:14px;background:var(--accent-soft);border:1px solid color-mix(in srgb,var(--accent) 30%,var(--border));border-radius:16px;padding:14px 16px;margin:0 0 22px;animation:viewin .4s ease both}
.nudge__ic{font-size:1.5rem;flex:none}
.nudge__tx{flex:1;min-width:0;line-height:1.35}
.nudge__tx b{display:block;font-weight:800;font-size:.95rem}
.nudge__tx span{font-size:.82rem;color:var(--text-2)}
.nudge__x{flex:none;width:30px;height:30px;border-radius:9px;border:1px solid var(--border);background:var(--panel);color:var(--muted);cursor:pointer;transition:.15s}
.nudge__x:hover{color:var(--text);border-color:var(--accent)}
@media (max-width:560px){.nudge{flex-wrap:wrap}.nudge__tx{flex:1 1 100%;order:2}.nudge .btn{order:3}}

/* ---- resources & coursework ---- */
.res-tabs{flex-wrap:wrap;margin:18px 0}
.res-intro{font-size:.95rem;color:var(--text-2);line-height:1.55;background:var(--panel-2);border:1px solid var(--border);border-radius:14px;padding:14px 16px;margin-bottom:18px}
.res-body{position:relative;z-index:1}
.res-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--r-l,18px);padding:20px;margin-bottom:16px}
.res-card__h{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:8px}
.res-card__h h3{font-size:1.1rem;font-weight:800;margin:0}
.res-os{font-size:.74rem;font-weight:700;color:var(--muted);margin-bottom:8px}
.res-brief{font-size:.92rem;color:var(--text-2);line-height:1.55}
.res-brief p{margin:0 0 10px}
.res-tasks,.res-steps{margin:12px 0 14px;padding-left:22px;font-size:.9rem;color:var(--text);line-height:1.6}
.res-tasks li,.res-steps li{margin-bottom:6px}
.res-tasks{list-style:none;padding-left:4px}
.res-tasks li{position:relative;padding-left:26px}
.res-tasks li::before{content:"☐";position:absolute;left:0;color:var(--accent);font-weight:800}
.res-codetitle{font-size:.78rem;font-weight:700;color:var(--muted);margin:10px 0 6px}
.res-code{background:var(--panel-3);border:1px solid var(--border);border-radius:12px;padding:14px 16px;overflow-x:auto;font-size:.84rem;line-height:1.5;margin:6px 0}
.res-code code{font-family:ui-monospace,Consolas,"Courier New",monospace;white-space:pre;color:var(--text)}
.res-run{font-size:.84rem;color:var(--text-2);margin:6px 0 4px}
.res-run code{background:var(--panel-3);padding:2px 7px;border-radius:6px;font-family:ui-monospace,Consolas,monospace}
.res-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}
.res-link{display:inline-flex;align-items:center;gap:9px;font-size:.86rem;font-weight:700;color:var(--accent);
  background:var(--accent-soft);border:1px solid color-mix(in srgb,var(--accent) 28%,var(--border));border-radius:11px;padding:9px 14px;text-decoration:none;transition:.15s}
.res-link:hover{filter:brightness(1.05);transform:translateY(-1px)}
.res-link--vid{color:var(--bad);background:var(--bad-soft);border-color:color-mix(in srgb,var(--bad) 28%,var(--border))}
.res-link__ic{font-size:.95rem}

/* ---- admin analytics ---- */
.adm-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;margin-bottom:20px}
.adm-stat{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:16px}
.adm-stat b{display:block;font-size:1.9rem;font-weight:900;line-height:1;color:var(--text)}
.adm-stat span{display:block;font-size:.76rem;font-weight:700;color:var(--text-2);margin-top:6px}
.adm-stat small{display:block;font-size:.68rem;color:var(--muted);margin-top:2px}
.adm-stat--hot{border-color:color-mix(in srgb,var(--good) 45%,var(--border));background:var(--good-soft)}
.adm-stat--hot b{color:var(--good)}
.adm-panel{background:var(--panel);border:1px solid var(--border);border-radius:var(--r-l,18px);padding:18px 20px;margin-bottom:18px}
.adm-panel .section-title{margin-top:0}
.adm-chart{display:flex;align-items:flex-end;gap:6px;height:170px;padding-top:10px}
.adm-bar{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%;gap:4px;min-width:0}
.adm-bar__v{width:70%;max-width:34px;background:var(--accent);border-radius:6px 6px 0 0;transition:height .4s}
.adm-bar i{font-size:.66rem;font-weight:800;color:var(--text-2);font-style:normal}
.adm-bar em{font-size:.6rem;color:var(--muted);font-style:normal;white-space:nowrap;transform:rotate(-30deg);transform-origin:center;margin-top:2px}
.adm-cols{display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media (max-width:820px){.adm-cols{grid-template-columns:1fr}}
.adm-tablewrap{overflow-x:auto}
.adm-table{width:100%;border-collapse:collapse;font-size:.86rem}
.adm-table th{text-align:left;font-size:.7rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-weight:700;padding:8px 10px;border-bottom:1px solid var(--border)}
.adm-table td{padding:9px 10px;border-bottom:1px solid var(--border);color:var(--text-2)}
.adm-table tr:last-child td{border-bottom:none}
.adm-table .mono{font-family:ui-monospace,Consolas,monospace;font-size:.8rem}
.adm-none{text-align:center;color:var(--muted);padding:18px}

/* ---- notifications · tips · activity spark ---- */
.notif-dot{position:absolute;top:8px;right:8px;width:9px;height:9px;border-radius:50%;background:var(--bad);border:2px solid var(--panel)}
.notif-panel{position:fixed;top:calc(var(--topbar-h) + 8px);right:14px;width:min(360px,calc(100vw - 24px));z-index:120;background:var(--panel);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow-l);overflow:hidden;animation:viewin .25s ease}
.notif-head{display:flex;align-items:center;padding:12px 14px;border-bottom:1px solid var(--border);font-size:.9rem}
.notif-x{border:none;background:none;color:var(--muted);font-size:.9rem;padding:4px 6px;border-radius:8px}
.notif-x:hover{background:var(--panel-3);color:var(--text)}
.notif-item{display:flex;gap:11px;align-items:flex-start;width:100%;text-align:left;border:none;background:none;padding:12px 14px;color:var(--text-2);font-size:.85rem;line-height:1.45;border-bottom:1px solid var(--border);transition:.15s}
.notif-item:last-child{border-bottom:none}
.notif-item:hover{background:var(--panel-2);color:var(--text)}
.notif-ic{flex:none;font-size:1.1rem}
.tip-toast{position:fixed;bottom:76px;right:14px;z-index:110;display:flex;gap:10px;align-items:flex-start;max-width:min(340px,calc(100vw - 28px));background:var(--panel);border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow-l);padding:13px 14px;font-size:.84rem;color:var(--text-2);line-height:1.45;animation:tipin .35s ease}
.tip-toast.bye{opacity:0;transform:translateY(8px);transition:.4s}
@keyframes tipin{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.spark{display:flex;align-items:flex-end;gap:4px;height:38px;margin:14px 0 4px;max-width:340px}
.spark i{flex:1;min-width:6px;background:var(--border-2);border-radius:3px 3px 0 0}
.spark i.on{background:rgba(255,255,255,.85)}
.hero .spark i{background:rgba(255,255,255,.22)}
.hero .spark i.on{background:rgba(255,255,255,.9)}

/* ---- per-student traceability watermark (learning pages) ---- */
#userWm{position:fixed;bottom:78px;right:12px;z-index:59;font-size:.62rem;font-weight:600;color:var(--muted);opacity:0;pointer-events:none;user-select:none;letter-spacing:.04em;transition:opacity .3s}
body.is-learning #userWm{opacity:.5}

/* ---- labs (learning environments) ---- */
.lab-shell{background:var(--panel);border:1px solid var(--border);border-radius:var(--r-l,18px);padding:16px;margin-bottom:18px}
.lab-bar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:10px}
.lab-bar b{font-size:.95rem}
.lab-editor{width:100%;min-height:220px;resize:vertical;background:var(--panel-3);color:var(--text);border:1px solid var(--border-2);border-radius:12px;padding:14px;font-family:ui-monospace,Consolas,monospace;font-size:.88rem;line-height:1.5;outline:none;tab-size:4}
.lab-editor:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.lab-status{font-size:.8rem;font-weight:600;color:var(--muted);min-height:1.2em;margin:8px 2px}
.lab-out{background:#1b1b19;color:#d8f2d8;border-radius:12px;padding:14px;font-family:ui-monospace,Consolas,monospace;font-size:.85rem;line-height:1.5;min-height:70px;height:180px;max-height:80vh;overflow:auto;white-space:pre-wrap;margin:0;resize:vertical}
[data-theme="light"] .lab-out{background:#1f2937;color:#c9f0c9}
.lab-frame{border:1px solid var(--border);border-radius:var(--r-l,18px);overflow:auto;margin-bottom:14px;height:480px;min-height:220px;max-height:92vh;resize:vertical}
.lab-frame iframe{display:block;width:100%;height:100%;border:0;background:#fff}
.lab-imgs{display:flex;flex-wrap:wrap;gap:12px;margin-top:12px}
.lab-fig{max-width:100%;background:#fff;border:1px solid var(--border);border-radius:10px;padding:6px}
.lab-cols{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:18px}
@media (max-width:760px){.lab-cols{grid-template-columns:1fr}}
.lab-snip .res-code{max-height:220px;overflow:auto}
.lab-tools{margin:0 0 18px}
.lab-tool{position:relative;z-index:1}
.lab-toolbar{display:flex;justify-content:flex-end;margin-bottom:8px}
/* fullscreen / maximize — works for every lab engine */
body.lab-maxed{overflow:hidden}
.lab-tool.lab-max{position:fixed;inset:0;z-index:130;margin:0;padding:52px 16px 14px;background:var(--bg);overflow:auto}
.lab-tool.lab-max .lab-toolbar{position:fixed;top:8px;right:14px;z-index:135;margin:0}
.lab-tool.lab-max .lab-toolbar .btn{background:var(--panel);border:1px solid var(--border-2);box-shadow:var(--shadow-m)}
.lab-tool.lab-max .lab-frame{height:calc(100vh - 90px);max-height:none}
.lab-tool.lab-max .lab-editor{min-height:calc(100vh - 300px)}
.lab-tool.lab-max .lab-out,.lab-tool.lab-max .cli-out{max-height:52vh}
.lab-tool.lab-max .lab-cols{grid-template-columns:1fr 1fr;align-items:start}
select.auth-input{appearance:auto}
/* cisco cli terminal */
.lab-term{background:#0c0c0c;border:1px solid var(--border);border-radius:14px;overflow:hidden;margin-bottom:14px}
.cli-out{margin:0;padding:14px;min-height:230px;max-height:340px;overflow:auto;color:#e6e6e6;background:#0c0c0c;font-family:ui-monospace,Consolas,monospace;font-size:.84rem;line-height:1.45;white-space:pre-wrap}
.cli-input{display:flex;align-items:center;gap:8px;border-top:1px solid #222;padding:8px 12px;background:#141414}
.cli-prompt{color:#7fd67f;font-family:ui-monospace,Consolas,monospace;font-size:.84rem;white-space:nowrap}
.cli-in{flex:1;background:transparent;border:0;outline:0;color:#e6e6e6;font-family:ui-monospace,Consolas,monospace;font-size:.84rem}
/* lexer token stream */
.lex-stream{display:flex;flex-wrap:wrap;gap:6px;padding:4px 0}
.lex-tok{display:inline-block;padding:3px 8px;border-radius:7px;font-family:ui-monospace,Consolas,monospace;font-size:.8rem;font-weight:600;color:#fff}
.lex-keyword{background:#8250df}.lex-identifier{background:#0969da}.lex-number{background:#1a7f37}
.lex-string{background:#bc4c00}.lex-operator{background:#cf222e}.lex-delimiter{background:#57606a}

/* ---- practical guide ---- */
.pblurb{font-size:.92rem;color:var(--text-2);line-height:1.55;margin:8px 0 0;max-width:70ch}
.ptools{display:grid;gap:16px}
.ptool{background:var(--panel);border:1px solid var(--border);border-left:4px solid var(--ca,var(--accent));border-radius:var(--r-l,18px);padding:20px}
.ptool__head{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-start;margin-bottom:10px}
.ptool__head h3{font-size:1.12rem;font-weight:800;margin:0}
.ptool__meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
.ptag{font-size:.7rem;font-weight:800;color:var(--ca,var(--accent));background:color-mix(in srgb,var(--ca,var(--accent)) 14%,transparent);padding:3px 9px;border-radius:20px}
.pos{font-size:.7rem;font-weight:700;color:var(--muted);background:var(--panel-3);padding:3px 9px;border-radius:20px}
.ptool__why{font-size:.9rem;color:var(--text-2);line-height:1.5;margin:0 0 14px}
.pstep-h{font-size:.72rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin:0 0 8px}
.psteps{margin:0 0 14px;padding-left:20px;display:grid;gap:7px}
.psteps li{font-size:.9rem;color:var(--text);line-height:1.5}
.pverify{font-size:.84rem;color:var(--text-2);background:var(--good-soft);border:1px solid color-mix(in srgb,var(--good) 30%,var(--border));border-radius:10px;padding:9px 12px;margin-bottom:14px}
.pverify code,.pex__run code{font-family:var(--mono,ui-monospace,Consolas,monospace);font-size:.82rem;background:var(--panel-3);padding:2px 7px;border-radius:6px;color:var(--text)}
.pex{border:1px solid var(--border);border-radius:12px;overflow:hidden;background:var(--panel-2)}
.pex__h{font-size:.8rem;font-weight:700;color:var(--text-2);padding:10px 14px;border-bottom:1px solid var(--border);background:var(--panel-3)}
.pcode{margin:0;padding:14px;overflow-x:auto;font-family:var(--mono,ui-monospace,Consolas,monospace);font-size:.82rem;line-height:1.5;color:var(--text);white-space:pre;tab-size:2}
.pex__run{display:flex;align-items:center;gap:10px;padding:10px 14px;border-top:1px solid var(--border);flex-wrap:wrap}
.pex__run>span{font-size:.72rem;font-weight:800;color:var(--good);letter-spacing:.04em}
.pvids{display:grid;gap:10px;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.pvid{display:flex;align-items:center;gap:12px;padding:12px 14px;border:1px solid var(--border);border-radius:12px;background:var(--panel);text-decoration:none;color:var(--text);transition:.15s}
.pvid:hover{border-color:var(--accent);transform:translateY(-1px)}
.pvid__ic{flex:none;width:34px;height:34px;border-radius:9px;display:grid;place-items:center;color:#fff;background:#e23b3b;font-size:.8rem}
.pvid__t{flex:1;font-size:.88rem;font-weight:700;line-height:1.3}
.pvid__x{font-size:.68rem;font-weight:700;color:var(--muted);white-space:nowrap}

/* =========================================================================
   v31 — FALLING LEAVES · LIQUID DOCK · SEMESTER GATE · HOVER DASHBOARD
   ========================================================================= */

/* ---------------------------- falling leaves ---------------------------- */
#leafCanvas{
  position:fixed;inset:0;width:100%;height:100%;z-index:0;pointer-events:none;
  opacity:1;transition:opacity .7s ease
}
/* leaves fall on the dashboard only */
body:not(.is-home) #leafCanvas{display:none}

/* ------------------------------ liquid dock ------------------------------ */
:root{
  --dock-glass:rgba(255,255,255,.55);
  --dock-line:rgba(255,255,255,.65);
  --dock-shine:rgba(255,255,255,.9);
}
[data-theme="dark"]{
  --dock-glass:rgba(48,48,46,.5);
  --dock-line:rgba(255,255,255,.11);
  --dock-shine:rgba(255,255,255,.22);
}

.dock{
  position:fixed;left:50%;bottom:18px;transform:translateX(-50%);z-index:60;
  max-width:calc(100vw - 20px);
  padding:7px;border-radius:26px;
  background:var(--dock-glass);
  -webkit-backdrop-filter:blur(26px) saturate(190%);
  backdrop-filter:blur(26px) saturate(190%);
  border:1px solid var(--dock-line);
  box-shadow:0 20px 50px -18px rgba(10,14,25,.55),0 2px 10px rgba(10,14,25,.18),
             inset 0 1px 0 var(--dock-shine);
  animation:dockin .6s cubic-bezier(.22,1.2,.36,1) both
}
@keyframes dockin{from{opacity:0;transform:translate(-50%,26px)}to{opacity:1;transform:translate(-50%,0)}}

.dock__track{position:relative;display:flex;align-items:center;gap:2px;padding:0 2px}
.dock__courses{display:contents}
.dock__sep{flex:none;width:1px;height:26px;margin:0 6px;background:var(--border-2);opacity:.7;border-radius:2px}

/* the pill that glides between tabs */
.dock__pill{
  position:absolute;top:0;left:0;height:100%;width:var(--w,46px);
  border-radius:19px;pointer-events:none;opacity:0;
  background:color-mix(in srgb,var(--pill,var(--accent)) 20%,transparent);
  border:1px solid color-mix(in srgb,var(--pill,var(--accent)) 42%,transparent);
  box-shadow:0 6px 18px -6px color-mix(in srgb,var(--pill,var(--accent)) 55%,transparent),
             inset 0 1px 0 rgba(255,255,255,.28);
  transform:translateX(var(--x,0)) scaleX(var(--sx,1)) scaleY(var(--sy,1));
  transform-origin:center;
  transition:transform .52s cubic-bezier(.34,1.4,.5,1),width .52s cubic-bezier(.34,1.4,.5,1),
             opacity .25s ease,background .3s ease,border-color .3s ease,box-shadow .3s ease
}
.dock__pill.on{opacity:1}
.dock__pill.is-flying{--sx:1.18;--sy:.84}

.dock__i{
  position:relative;flex:none;width:46px;height:46px;border:none;background:none;border-radius:19px;
  display:grid;place-items:center;color:var(--text-2);
  transition:transform .28s cubic-bezier(.3,1.4,.5,1),color .2s ease;
  transform-origin:bottom center
}
.dock__ic{font-size:1.18rem;line-height:1}
.dock__ab{font-size:.66rem;font-weight:900;letter-spacing:-.02em;line-height:1}
/* course abbreviations stay neutral: white on dark, black on light */
.dock__i--course .dock__ab{color:#101010}
[data-theme="dark"] .dock__i--course .dock__ab{color:#ffffff}
.dock__i:hover{color:var(--text);transform:translateY(-9px) scale(1.24)}
.dock__i:hover + .dock__i{transform:translateY(-4px) scale(1.11)}
.dock__i:has(+ .dock__i:hover){transform:translateY(-4px) scale(1.11)}
.dock__i.active{color:var(--accent)}
.dock__i--course.active .dock__ab{color:#101010}
[data-theme="dark"] .dock__i--course.active .dock__ab{color:#ffffff}
.dock__i:active{transform:translateY(-4px) scale(1.04)}

/* badge */
.dbadge{
  position:absolute;top:3px;right:3px;min-width:16px;height:16px;padding:0 4px;border-radius:9px;
  background:var(--bad);color:#fff;font-size:.6rem;font-weight:900;font-style:normal;
  display:grid;place-items:center;box-shadow:0 2px 6px rgba(0,0,0,.3)
}
.dbadge:empty{display:none}

/* tooltip — full course name on hover */
.dock__i::after{
  content:attr(data-tip);position:absolute;bottom:calc(100% + 14px);left:50%;
  transform:translateX(-50%) translateY(6px) scale(.94);transform-origin:bottom center;
  background:var(--panel);color:var(--text);border:1px solid var(--border);
  padding:6px 11px;border-radius:10px;font-size:.76rem;font-weight:700;white-space:nowrap;
  box-shadow:var(--shadow-m);opacity:0;pointer-events:none;
  transition:opacity .18s ease,transform .24s cubic-bezier(.3,1.4,.5,1)
}
.dock__i::before{
  content:"";position:absolute;bottom:calc(100% + 8px);left:50%;width:8px;height:8px;
  transform:translateX(-50%) rotate(45deg) translateY(4px);
  background:var(--panel);border-right:1px solid var(--border);border-bottom:1px solid var(--border);
  opacity:0;pointer-events:none;transition:opacity .18s ease,transform .24s ease
}
.dock__i:hover::after{opacity:1;transform:translateX(-50%) translateY(0) scale(1)}
.dock__i:hover::before{opacity:1;transform:translateX(-50%) rotate(45deg) translateY(0)}

@media (max-width:900px){
  .dock{bottom:10px;padding:6px;border-radius:22px;overflow-x:auto;overflow-y:hidden;
        scrollbar-width:none;-ms-overflow-style:none}
  .dock::-webkit-scrollbar{display:none}
  .dock__i{width:42px;height:42px;border-radius:16px}
  .dock__pill{border-radius:16px}
  .dock__i:hover{transform:none}
  .dock__i:hover + .dock__i{transform:none}
  .dock__i:has(+ .dock__i:hover){transform:none}
  .dock__i::after,.dock__i::before{display:none}
  .view{padding-bottom:110px}
}

/* semester chip in the topbar */
.semchip{
  flex:none;height:34px;padding:0 13px;border-radius:20px;border:1px solid var(--border);
  background:var(--panel-2);color:var(--text-2);font-size:.74rem;font-weight:800;letter-spacing:.01em;transition:.16s
}
.semchip:hover{border-color:var(--accent);color:var(--accent)}

/* ---------------------------- semester gate ---------------------------- */
#semScreen{
  position:fixed;inset:0;z-index:150;overflow-y:auto;
  display:grid;place-items:center;padding:44px 20px 60px;
  background:radial-gradient(1100px 620px at 50% -10%,var(--accent-soft),transparent 70%),var(--bg);
  transition:transform .72s cubic-bezier(.7,0,.28,1),opacity .5s ease .18s
}
#semScreen.is-leaving{transform:translateY(-100%);opacity:0}
.sem-wrap{width:100%;max-width:940px;text-align:center;position:relative;z-index:1}
.sem-logo{width:64px;height:64px;object-fit:contain;background:#fff;border-radius:16px;padding:6px;border:1px solid var(--border);box-shadow:0 10px 26px -10px rgba(29,78,137,.5)}
.sem-eyebrow{font-size:.72rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin:16px 0 8px}
.sem-h1{font-size:clamp(1.6rem,4vw,2.5rem);font-weight:900;margin:0 0 10px}
.sem-sub{color:var(--text-2);font-size:.98rem;margin:0 auto 34px;max-width:52ch}
.sem-grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));text-align:left;max-width:760px;margin:0 auto}

.semcard{
  position:relative;overflow:hidden;padding:22px 20px 20px;border-radius:var(--r-xl);
  background:var(--panel);border:1px solid var(--border);box-shadow:var(--shadow-s);
  display:flex;flex-direction:column;gap:10px;min-height:196px;color:var(--text);
  transition:transform .4s cubic-bezier(.2,1.2,.4,1),box-shadow .35s ease,border-color .25s ease;
  animation:semin .55s cubic-bezier(.2,1.1,.4,1) both
}
@keyframes semin{from{opacity:0;transform:translateY(22px) scale(.97)}to{opacity:1;transform:none}}
.semcard::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:0;transition:opacity .35s ease;
  background:radial-gradient(420px 220px at var(--mx,50%) var(--my,0%),color-mix(in srgb,var(--accent) 20%,transparent),transparent 65%)
}
.semcard--ready:hover{transform:translateY(-8px) scale(1.015);box-shadow:var(--shadow-l);border-color:color-mix(in srgb,var(--accent) 45%,transparent)}
.semcard--ready:hover::after{opacity:1}
.semcard__lvl{font-size:.7rem;font-weight:900;letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
.semcard__h{font-size:1.32rem;font-weight:900;letter-spacing:-.02em}
.semcard__b{font-size:.82rem;color:var(--text-2);line-height:1.5;flex:1}
.semcard__foot{display:flex;align-items:center;gap:9px;font-size:.78rem;font-weight:800;color:var(--accent)}
.semcard__foot .grow{flex:1}
.semcard__foot .arrow{transition:transform .3s ease}
.semcard--ready:hover .semcard__foot .arrow{transform:translateX(5px)}
.semcard__n{font-size:.72rem;font-weight:800;color:var(--muted);background:var(--panel-3);padding:3px 9px;border-radius:20px}
.semcard--soon{opacity:.6;cursor:not-allowed}
.semcard--soon .semcard__lvl,.semcard--soon .semcard__foot{color:var(--muted)}
.semcard--current{border-color:color-mix(in srgb,var(--accent) 40%,transparent)}
.semcard.is-picked{transform:scale(1.04);box-shadow:0 30px 70px -20px color-mix(in srgb,var(--accent) 60%,transparent);border-color:var(--accent);z-index:2}
.sem-foot{margin-top:26px;font-size:.74rem;color:var(--muted)}
.sem-back{border:1px solid var(--border);background:var(--panel);color:var(--text-2);font-size:.74rem;font-weight:800;
  padding:6px 13px;border-radius:20px;margin-left:8px;transition:.15s}
.sem-back:hover{border-color:var(--accent);color:var(--accent)}

/* dashboard rises into place after the gate moves up */
.rise-in{animation:risein .66s cubic-bezier(.2,1,.3,1) both}
@keyframes risein{from{opacity:0;transform:translateY(46px)}to{opacity:1;transform:none}}

/* ------------------------- fine hover dashboard ------------------------- */
.ccard{transition:transform .38s cubic-bezier(.2,1.2,.4,1),box-shadow .35s ease,border-color .25s ease}
.ccard::after{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;opacity:0;transition:opacity .35s ease;
  background:radial-gradient(320px 180px at var(--mx,50%) var(--my,0%),color-mix(in srgb,var(--ca,var(--accent)) 22%,transparent),transparent 60%)
}
.ccard:hover{transform:translateY(-7px) scale(1.012);box-shadow:var(--shadow-l);border-color:color-mix(in srgb,var(--ca,var(--accent)) 50%,transparent)}
.ccard:hover::after{opacity:1}
.hstat{transition:transform .3s cubic-bezier(.2,1.3,.4,1)}
.hstat:hover{transform:translateY(-3px)}

/* =========================================================================
   v32 — LIQUID GLASS SURFACES · DASHBOARD · VIEW HEAD (back + window controls)
   ========================================================================= */

:root{
  --glass-bg:rgba(255,255,255,.58);
  --glass-2:rgba(255,255,255,.40);
  --glass-line:rgba(255,255,255,.75);
  --glass-shine:rgba(255,255,255,.95);
  --glass-shadow:0 22px 48px -26px rgba(12,18,32,.55);
}
[data-theme="dark"]{
  --glass-bg:rgba(48,48,46,.52);
  --glass-2:rgba(48,48,46,.36);
  --glass-line:rgba(255,255,255,.10);
  --glass-shine:rgba(255,255,255,.18);
  --glass-shadow:0 22px 48px -24px rgba(0,0,0,.75);
}

/* one surface language, shared with the dock */
.glasspane{
  position:relative;overflow:hidden;
  background:var(--glass-bg);
  -webkit-backdrop-filter:blur(24px) saturate(185%);
  backdrop-filter:blur(24px) saturate(185%);
  border:1px solid var(--glass-line);
  border-radius:var(--r-l);
  box-shadow:var(--glass-shadow),inset 0 1px 0 var(--glass-shine)
}
/* the wet edge along the top of every pane */
.glasspane::before{
  content:"";position:absolute;left:8%;right:8%;top:0;height:1px;pointer-events:none;
  background:linear-gradient(90deg,transparent,var(--glass-shine),transparent);opacity:.7
}

/* ------------------------------- hero ------------------------------- */
.ghero{
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:28px;align-items:center;
  padding:clamp(20px,3.4vw,34px);border-radius:var(--r-xl);margin-bottom:22px
}
.ghero__glow{
  position:absolute;inset:0;pointer-events:none;opacity:.9;
  background:
    radial-gradient(560px 300px at var(--mx,18%) var(--my,-10%),color-mix(in srgb,var(--accent) 26%,transparent),transparent 62%),
    radial-gradient(420px 260px at 92% 120%,color-mix(in srgb,var(--accent) 15%,transparent),transparent 60%)
}
.ghero__l,.ghero__r{position:relative;z-index:1}
.ghero__eyebrow{font-size:.7rem;font-weight:800;letter-spacing:.15em;text-transform:uppercase;color:var(--muted)}
.ghero h1{font-size:clamp(1.5rem,3.4vw,2.25rem);font-weight:900;margin:9px 0 6px}
.ghero p{color:var(--text-2);font-size:.95rem;margin:0 0 18px;max-width:52ch}
.ghero p b{color:var(--text)}
.ghero__stats{display:flex;flex-wrap:wrap;gap:22px 30px;margin-bottom:16px}
.ghero__stats .hstat b{display:block;font-size:1.5rem;font-weight:900;line-height:1;color:var(--text)}
.ghero__stats .hstat span{font-size:.72rem;font-weight:700;color:var(--muted);letter-spacing:.02em}
.ghero__r{position:relative;display:grid;place-items:center;gap:12px;min-width:186px;padding-left:6px}
.gbtn--sem{height:38px;padding:0 15px;font-size:.8rem;color:var(--accent);
  border-color:color-mix(in srgb,var(--accent) 35%,transparent);border-style:dashed}
.gbtn--sem:hover{background:var(--accent-soft);border-style:solid}
.ghero__avg{font-size:.76rem;font-weight:700;color:var(--muted)}
.ghero__avg b{color:var(--text)}
.ghero__cta{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}

.gbtn{
  display:inline-flex;align-items:center;gap:8px;height:42px;padding:0 17px;border-radius:22px;
  border:1px solid var(--glass-line);background:var(--glass-2);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  color:var(--text);font-size:.84rem;font-weight:800;transition:.18s;max-width:100%;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap
}
.gbtn:hover{transform:translateY(-2px);border-color:color-mix(in srgb,var(--accent) 55%,transparent);box-shadow:var(--shadow-m)}
.gbtn--p{background:var(--accent);border-color:transparent;color:var(--accent-ink,#fff)}
.gbtn--p:hover{filter:brightness(1.07)}

@media (max-width:820px){
  .ghero{grid-template-columns:1fr;gap:18px}
  .ghero__r{justify-items:start}
}

/* semester picker, opened in place on the dashboard */
.sempop{
  position:fixed;width:min(320px,calc(100vw - 32px));z-index:120;
  max-height:calc(100vh - 24px);overflow-y:auto;
  padding:12px;display:flex;flex-direction:column;gap:2px;text-align:left;
  animation:sempop .28s cubic-bezier(.2,1.2,.4,1) both
}
@keyframes sempop{from{opacity:0;transform:translateY(-8px) scale(.97)}to{opacity:1;transform:none}}
.sempop__h{font-size:.66rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);padding:4px 8px 10px}
.sempop__i{
  position:relative;display:flex;flex-direction:column;align-items:flex-start;gap:1px;width:100%;text-align:left;
  border:1px solid transparent;background:none;color:var(--text);padding:10px 12px;border-radius:13px;transition:.15s
}
.sempop__i b{font-size:.86rem;font-weight:800}
.sempop__i span{font-size:.72rem;font-weight:600;color:var(--muted)}
.sempop__i em{
  position:absolute;right:10px;top:50%;transform:translateY(-50%);font-style:normal;
  font-size:.62rem;font-weight:900;letter-spacing:.06em;text-transform:uppercase;color:var(--accent)
}
.sempop__i:not([disabled]):hover{background:var(--glass-2);border-color:var(--glass-line)}
.sempop__i.on{background:var(--accent-soft);border-color:color-mix(in srgb,var(--accent) 40%,transparent)}
.sempop__i[disabled]{opacity:.45;cursor:not-allowed}

/* ------------------------- view head: the way back ------------------------- */
.viewhead{
  position:sticky;top:var(--topbar-h);z-index:25;
  display:flex;align-items:center;gap:12px;
  width:100%;max-width:1180px;margin:0 auto;
  padding:12px clamp(16px,3.4vw,40px) 4px
}
.viewhead__sp{flex:1}
.backpill{
  display:inline-flex;align-items:center;gap:10px;height:44px;padding:0 18px 0 13px;border-radius:24px;
  background:var(--glass-bg);-webkit-backdrop-filter:blur(20px) saturate(180%);backdrop-filter:blur(20px) saturate(180%);
  border:1px solid var(--glass-line);box-shadow:var(--glass-shadow);color:var(--text);
  transition:transform .22s cubic-bezier(.3,1.3,.5,1),border-color .2s ease,box-shadow .2s ease;max-width:min(70vw,420px)
}
.backpill:hover{transform:translateX(-3px);border-color:color-mix(in srgb,var(--accent) 55%,transparent)}
.backpill__a{
  flex:none;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;font-size:.9rem;
  background:var(--accent);color:var(--accent-ink,#fff);transition:transform .22s ease
}
.backpill:hover .backpill__a{transform:translateX(-2px)}
.backpill__t{display:flex;flex-direction:column;line-height:1.15;min-width:0;font-size:.9rem;font-weight:800;text-align:left}
.backpill__t small{font-size:.62rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}

@media (max-width:560px){
  .backpill{height:40px;padding:0 14px 0 10px}
  .backpill__t{font-size:.82rem}
}

/* glass course cards on the dashboard */
.ccard.glasspane{background:var(--glass-bg)}
.nudge.glasspane{padding:14px 16px}

/* ------------------------- liquid glass login ------------------------- */
#authScreen{
  background:
    radial-gradient(760px 460px at 18% -8%,color-mix(in srgb,var(--accent) 26%,transparent),transparent 62%),
    radial-gradient(680px 420px at 88% 110%,color-mix(in srgb,var(--accent) 18%,transparent),transparent 60%),
    var(--bg)
}
.auth-bg{
  position:fixed;inset:0;z-index:-1;
  background:url("../img/atu-logo.png") no-repeat center 118%/460px;
  opacity:.5
}
.auth-card{
  background:var(--glass-bg);
  -webkit-backdrop-filter:blur(30px) saturate(190%);backdrop-filter:blur(30px) saturate(190%);
  border:1px solid var(--glass-line);border-radius:28px;
  box-shadow:var(--glass-shadow),inset 0 1px 0 var(--glass-shine);
  position:relative;overflow:hidden
}
.auth-card::before{
  content:"";position:absolute;left:10%;right:10%;top:0;height:1px;pointer-events:none;
  background:linear-gradient(90deg,transparent,var(--glass-shine),transparent);opacity:.8
}
.auth-logo{
  background:var(--glass-2);border:1px solid var(--glass-line);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  box-shadow:0 10px 26px -12px rgba(10,16,30,.6)
}
.auth-input{
  background:var(--glass-2);border:1px solid var(--glass-line);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)
}
.auth-input:focus{background:var(--glass-bg);border-color:color-mix(in srgb,var(--accent) 60%,transparent)}
.auth-hint{
  background:var(--glass-2);border:1px solid var(--glass-line);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)
}
.auth-btn{
  border-radius:14px;box-shadow:0 14px 30px -14px color-mix(in srgb,var(--accent) 75%,transparent);
  transition:transform .2s cubic-bezier(.3,1.3,.5,1),filter .2s ease,box-shadow .2s ease
}

/* =========================================================================
   v39 — UPLOAD ENGINE: kind badges · notes reader · admin convert editor
   ========================================================================= */
.dkind{display:inline-flex;align-items:center;gap:4px;font-size:.66rem;font-weight:800;letter-spacing:.01em;
  padding:3px 9px;border-radius:20px;background:var(--panel-3);color:var(--muted);white-space:nowrap}
.dkind--r{background:color-mix(in srgb,var(--good) 16%,transparent);color:var(--good)}
.dkind--s{background:color-mix(in srgb,var(--warn) 16%,transparent);color:var(--warn)}
.dkind--md{background:var(--accent-soft);color:var(--accent)}

/* overlay shared by the reader and the editor */
.mdover{position:fixed;inset:0;z-index:200;display:grid;place-items:center;padding:20px;
  background:rgba(10,14,25,.55);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
  animation:viewin .2s ease both}
.mdcard{width:100%;max-width:760px;max-height:88vh;display:flex;flex-direction:column;
  background:var(--panel);border:1px solid var(--border);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-l)}
.mdcard--wide{max-width:1040px}
.mdcard__h{display:flex;align-items:center;gap:10px;padding:14px 18px;border-bottom:1px solid var(--border);
  font-size:.98rem;font-weight:800;flex:none}
.mdclose{width:32px;height:32px;border-radius:9px;border:1px solid var(--border);background:var(--panel-2);
  color:var(--text-2);font-size:.9rem;transition:.15s}
.mdclose:hover{border-color:var(--bad);color:var(--bad)}
.mdcard__body{overflow:auto;padding:clamp(18px,3vw,30px)}
.mdcard__split{display:grid;grid-template-columns:1fr 1fr;gap:0;flex:1;min-height:0}
.mdedit{border:none;border-right:1px solid var(--border);background:var(--panel-2);color:var(--text);resize:none;
  padding:16px;font-family:var(--mono);font-size:.82rem;line-height:1.55;outline:none;width:100%;height:100%;min-height:52vh}
.mdprev{overflow:auto;padding:16px 20px;background:var(--panel)}
@media (max-width:720px){ .mdcard__split{grid-template-columns:1fr} .mdedit{border-right:none;border-bottom:1px solid var(--border);min-height:34vh} }


/* mistakes-mode badge on the dock course abbreviations */
.dbadge--mis{background:var(--accent);color:var(--accent-ink,#fff);top:2px;right:2px}
.dock__i--course.active .dbadge--mis{background:var(--ca,var(--accent))}