:root{--bg:#f6f4ff;--card:#fff;--ink:#15102a;--muted:#6e6680;--line:#e7e1fb;--brand:#5b3df5;--brand-dark:#3b22b8;--accent:#ff7a59;--ok:#17b890;--bad:#e8485b;--shadow:0 1px 2px rgba(21,16,42,.05),0 8px 24px rgba(91,61,245,.07)}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--ink);line-height:1.5}
a{color:var(--brand)}

/* ---------- top bar (after login) ---------- */
header{position:sticky;top:0;z-index:5;display:flex;gap:12px;align-items:center;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);color:var(--ink);padding:10px 20px}
header .brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:700;font-size:18px;letter-spacing:.2px}
header .brand img{border-radius:9px;display:block;box-shadow:0 2px 8px rgba(91,61,245,.35)}
header .brand em{font-style:normal;font-size:11px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--brand);background:#ede8ff;border-radius:999px;padding:2px 9px}
header #who{flex:1;font-size:14px;color:var(--muted);text-align:right;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
body:has(#login-view:not([hidden])) header{display:none}

main{max-width:1100px;margin:0 auto;padding:20px 16px 40px}
nav{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px;padding:5px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow)}
nav button{border:0;background:transparent;border-radius:8px;color:var(--muted);font-weight:600;padding:7px 14px}
nav button:hover{background:#f1edff;color:var(--brand)}
nav button.on{background:var(--brand);color:#fff;box-shadow:0 2px 8px rgba(91,61,245,.35)}

/* ---------- controls ---------- */
button{font:inherit;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:9px;padding:7px 14px;cursor:pointer;transition:background .15s,box-shadow .15s,transform .05s}
button:hover{background:#f7f4ff}
button:active{transform:translateY(1px)}
button:disabled{opacity:.5;cursor:not-allowed}
button.primary,.login-card button[type=submit],#recovery-done{background:linear-gradient(135deg,var(--brand),var(--brand-dark));color:#fff;border-color:transparent;font-weight:600;box-shadow:0 4px 14px rgba(91,61,245,.35)}
button.primary:hover,.login-card button[type=submit]:hover,#recovery-done:hover{background:linear-gradient(135deg,#6a4ff7,#4529c8)}
button.danger{color:var(--bad);border-color:var(--bad);background:#fff}
button.danger:hover{background:#fff1f3}
input,select,textarea{font:inherit;padding:9px 11px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(91,61,245,.18)}
button:focus-visible,a:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
label{display:block;margin:12px 0;font-size:14px;font-weight:600;color:#3a3350}
label input{display:block;width:100%;max-width:340px;margin-top:5px;font-weight:400}

/* ---------- cards and tables ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px;margin:12px 0;box-shadow:var(--shadow)}
table{width:100%;border-collapse:separate;border-spacing:0;background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow)}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);font-size:14px;vertical-align:top}
tr:last-child td{border-bottom:0}
th{background:#faf8ff;color:var(--muted);font-size:12px;font-weight:700;letter-spacing:.05em;text-transform:uppercase}
tbody tr:hover td{background:#fcfbff}
.row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:8px 0}
.msg{min-height:1.2em;color:var(--bad);font-size:14px}
.msg.ok{color:var(--ok)}
.muted{color:var(--muted);font-size:13px}
.tag{display:inline-block;padding:1px 9px;border-radius:999px;background:#ede8ff;color:var(--brand-dark);font-size:12px;font-weight:600}
.scroll{overflow-x:auto}
.secret{font-size:1.15em;letter-spacing:.08em;word-break:break-all;background:#faf8ff;border:1px dashed #cfc5fb;border-radius:10px;padding:10px;display:block}
#qr{background:#fff;padding:8px;border-radius:12px;border:1px solid var(--line);max-width:100%;height:auto;image-rendering:pixelated}
#recovery-list{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:1.05em;letter-spacing:.06em;white-space:pre-wrap;columns:2;margin:8px 0}
.check{display:flex;gap:8px;align-items:center;margin:10px 0}
[hidden]{display:none!important}
label.check{display:inline-flex;width:auto;flex:0 1 auto}
label.check input{width:auto;margin:0}

/* ---------- login screen: one purple stage, brand on top, card below ---------- */
main#login-view{position:relative;overflow:hidden;max-width:none;margin:0;padding:0;min-height:100vh;display:flex;align-items:center;justify-content:center;color:#fff;background:radial-gradient(120% 90% at 0% 0%,#7458ff 0%,var(--brand) 40%,var(--brand-dark) 100%)}
main#login-view .orbit{position:absolute;border:2px solid rgba(255,255,255,.14);border-radius:50%;pointer-events:none}
main#login-view .o1{width:900px;height:380px;left:-260px;top:6%;transform:rotate(-24deg)}
main#login-view .o2{width:760px;height:320px;right:-240px;bottom:2%;transform:rotate(-24deg);border-color:rgba(255,255,255,.09)}
main#login-view .dot{position:absolute;width:14px;height:14px;border-radius:50%;background:var(--accent);right:18%;top:14%;box-shadow:0 0 0 8px rgba(255,122,89,.25),0 0 40px 10px rgba(255,122,89,.35);pointer-events:none}
.stage{position:relative;width:100%;max-width:460px;padding:32px 20px;display:flex;flex-direction:column;align-items:center;gap:22px}
.brand-top{text-align:center}
.brand-top img{display:block;margin:0 auto;border-radius:20px;box-shadow:0 0 0 3px rgba(255,255,255,.28),0 14px 40px rgba(10,5,60,.45)}
.brand-top h2{margin:14px 0 2px;font-size:34px;letter-spacing:.3px;line-height:1.1}
.tagline{margin:0;font-size:16px;font-weight:700;color:#e7e1ff}
.login-card{width:100%;color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:18px;padding:28px 26px;box-shadow:0 24px 60px rgba(10,5,60,.35)}
.login-card h1{margin:0 0 4px;font-size:24px}
.login-card .sub{margin:0 0 14px;color:var(--muted);font-size:14px}
.login-card label input{max-width:none}
.login-card button[type=submit]{width:100%;padding:11px 14px;margin-top:6px}
.login-card ol{padding-left:20px}
.login-card form p,.login-card section p{font-size:14px}
.foot{margin:0;font-size:12px;color:#cfc6ff;text-align:center}

@media (max-width:820px){
  .stage{padding:24px 16px;gap:18px}
  .brand-top img{width:64px;height:64px}
  .brand-top h2{font-size:28px}
  header{padding:8px 12px}
  header #who{display:none}
  header .brand{flex:1}
}
@media (prefers-reduced-motion:no-preference){
  .login-card,.brand-top{animation:rise .35s ease-out both}
  @keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
}

/* ---------- educators page additions ---------- */
.switch{display:flex;gap:4px;padding:4px;background:#f1edff;border-radius:11px;margin-bottom:14px}
.switch button{flex:1;border:0;background:transparent;border-radius:8px;font-weight:600;color:var(--muted)}
.switch button.on{background:#fff;color:var(--brand);box-shadow:0 1px 4px rgba(21,16,42,.12)}
.login-card textarea{width:100%;display:block;margin-top:5px}
label textarea{display:block;width:100%;max-width:560px;margin-top:5px;font-weight:400}
label select{display:block;margin-top:5px;font-weight:400}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:12px}
.steps{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}
.step{flex:1 1 150px;border:1px solid var(--line);border-radius:12px;padding:10px 12px;background:#fff;font-size:14px}
.step b{display:block;font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.step.done{border-color:var(--ok);background:#f2fcf9}
.step.now{border-color:var(--brand);box-shadow:0 0 0 3px rgba(91,61,245,.15)}
.tag.ok{background:#dcf7ef;color:#0b6b54}
.tag.warn{background:#fff1d6;color:#8a5a00}
.tag.bad{background:#ffe3e7;color:#a3263a}
.unit-row{display:grid;grid-template-columns:2fr 1fr 2fr 90px auto;gap:6px;align-items:center;margin:6px 0}
.unit-row input,.unit-row select{width:100%;max-width:none;margin:0}
.big{font-size:22px;font-weight:700}
.videos{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:8px;margin:10px 0}
.videos .tile{position:relative;background:#15102a;border-radius:12px;overflow:hidden;aspect-ratio:16/9}
.videos video{width:100%;height:100%;object-fit:cover;display:block}
.videos .name{position:absolute;left:8px;bottom:6px;color:#fff;font-size:12px;background:rgba(0,0,0,.45);border-radius:6px;padding:1px 7px}
.pill-row{display:flex;flex-wrap:wrap;gap:6px;margin:6px 0}
.pill{display:inline-flex;align-items:center;gap:6px;background:#ede8ff;color:var(--brand-dark);border-radius:999px;padding:3px 6px 3px 12px;font-size:13px;font-weight:600}
.pill button{border:0;background:transparent;padding:0 4px;color:var(--brand-dark);font-size:15px;line-height:1}
.hit{display:block;width:100%;text-align:left;margin:4px 0}
@media (max-width:720px){.unit-row{grid-template-columns:1fr 1fr}}

.avatar{width:64px;height:64px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-dark));color:#fff;display:flex;align-items:center;justify-content:center;font-size:26px;font-weight:700;overflow:hidden;flex:none}
.avatar img{width:100%;height:100%;object-fit:cover;display:block}
.docimg{max-width:100%;max-height:420px;border-radius:10px;border:1px solid var(--line);margin:8px 0;display:block}
h3{margin:22px 0 4px}
.forgot{margin:12px 0 0;text-align:center;font-size:14px}
.codes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px 18px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:1.05em;letter-spacing:.06em;background:#faf8ff;border:1px dashed #cfc5fb;border-radius:10px;padding:12px;margin:10px 0}