/* Scaletech Secure Assessment — proctoring UI */
:root{
  --navy:#0b1f3a; --navy-2:#0e2748; --blue:#0b57d0; --blue-d:#0842a0;
  --ink:#1b2733; --muted:#5b6b7b; --line:#e2e8f0; --bg:#f4f6fb;
  --card:#ffffff; --ok:#137333; --warn:#c5221f; --amber:#e8a400;
  --radius:14px; --shadow:0 10px 40px rgba(11,31,58,.10),0 2px 8px rgba(11,31,58,.06);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; background:linear-gradient(180deg,#eef2fb 0%,#f4f6fb 40%,#eef1f7 100%);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,"Apple Color Emoji","Segoe UI Emoji",sans-serif;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  display:flex; flex-direction:column; min-height:100vh;
}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}

/* top bar */
.topbar{
  display:flex; align-items:center; justify-content:space-between;
  background:linear-gradient(90deg,var(--navy),var(--navy-2));
  color:#fff; padding:10px 18px; box-shadow:0 2px 12px rgba(0,0,0,.18);
  position:sticky; top:0; z-index:20;
}
.tb-left{display:flex; align-items:center; gap:10px; font-size:14px}
.tb-brand b{font-weight:700}
.logo-full{height:30px; width:auto; display:block; flex:0 0 auto; fill:#12233b}
.tb-logo{height:22px}
.topbar .logo-full{fill:#fff}
.tb-right{display:flex; align-items:center; gap:16px; font-size:13px}
.tb-sid code{background:rgba(255,255,255,.12); padding:2px 8px; border-radius:6px; color:#dbe7ff}
.rec-pill{display:inline-flex; align-items:center; gap:7px; background:rgba(197,34,31,.16);
  border:1px solid rgba(255,120,116,.4); color:#ffdad8; padding:3px 10px; border-radius:20px; font-weight:600; letter-spacing:.4px}
.rec-dot{width:9px; height:9px; border-radius:50%; background:#ff4d47; box-shadow:0 0 0 0 rgba(255,77,71,.7); animation:pulse 1.4s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(255,77,71,.6)}70%{box-shadow:0 0 0 7px rgba(255,77,71,0)}100%{box-shadow:0 0 0 0 rgba(255,77,71,0)}}

/* stage / cards */
.stage{flex:1; display:flex; align-items:center; justify-content:center; padding:32px 18px}
.screen{width:100%; display:flex; justify-content:center; animation:fade .35s ease}
@keyframes fade{from{opacity:0; transform:translateY(6px)}to{opacity:1; transform:none}}
.card{
  background:var(--card); border:1px solid var(--line); border-radius:var(--radius);
  box-shadow:var(--shadow); padding:34px 34px 30px; width:100%; max-width:520px;
}
.card.wide{max-width:860px}
.card.center{text-align:center; max-width:560px}
.brandline{display:flex; flex-direction:column; align-items:center; gap:10px; font-size:20px; font-weight:700; color:var(--navy); margin-bottom:20px}
.brandline .sub{font-weight:500; color:var(--muted); font-size:14px; letter-spacing:.06em; text-transform:uppercase}
h1{font-size:23px; line-height:1.25; margin:.2em 0 .35em; letter-spacing:-.01em}
.muted{color:var(--muted); font-size:14.5px; line-height:1.55; margin:.2em 0 1.1em}
.muted.small{font-size:13px}

/* form */
.fld{display:block; margin-bottom:15px}
.fld span{display:block; font-size:13px; font-weight:600; color:#39485a; margin-bottom:6px}
.fld input{
  width:100%; padding:12px 13px; border:1px solid #cdd7e3; border-radius:9px; font-size:15px;
  background:#fbfdff; transition:border .15s,box-shadow .15s;
}
.fld input:focus{outline:none; border-color:var(--blue); box-shadow:0 0 0 3px rgba(11,87,208,.15)}
.consent{display:flex; gap:10px; align-items:flex-start; font-size:13px; color:#455467; line-height:1.5; margin:6px 0 20px}
.consent input{margin-top:2px; width:16px; height:16px; flex:0 0 auto; accent-color:var(--blue)}
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px; width:100%;
  padding:13px 18px; border-radius:10px; border:1px solid transparent; font-size:15px; font-weight:600;
  cursor:pointer; transition:background .15s,transform .05s,box-shadow .15s;
}
.btn.primary{background:var(--blue); color:#fff; box-shadow:0 4px 14px rgba(11,87,208,.28)}
.btn.primary:hover{background:var(--blue-d)}
.btn.primary:active{transform:translateY(1px)}
.btn:disabled{background:#c3ccd8; box-shadow:none; cursor:not-allowed}
.legal{font-size:11.5px; color:#8493a4; line-height:1.5; margin:14px 0 0; text-align:center}

/* countdown */
.countdown{display:flex; gap:12px; justify-content:center; margin:22px 0 14px}
.cd-cell{background:var(--navy); color:#fff; border-radius:12px; padding:14px 8px; min-width:74px}
.cd-cell span{display:block; font-size:30px; font-weight:700; font-variant-numeric:tabular-nums; letter-spacing:1px}
.cd-cell small{display:block; font-size:11px; text-transform:uppercase; letter-spacing:1px; color:#9db6de; margin-top:3px}

/* checklist */
.check-grid{display:grid; grid-template-columns:1fr 320px; gap:26px; margin-top:8px}
@media(max-width:720px){.check-grid{grid-template-columns:1fr}}
.checklist{list-style:none; margin:0; padding:0}
.ck{display:flex; align-items:center; gap:14px; padding:14px 4px; border-bottom:1px solid var(--line)}
.ck:last-child{border-bottom:none}
.ck-txt b{display:block; font-size:15px}
.ck-txt small{color:var(--muted); font-size:12.5px}
.ck-ic{width:24px; height:24px; flex:0 0 auto; border-radius:50%; position:relative}
.ck-ic[data-spin]{border:2.5px solid #d7deea; border-top-color:var(--blue); animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.ck.done .ck-ic{border:none; background:var(--ok); animation:none}
.ck.done .ck-ic::after{content:""; position:absolute; left:8px; top:4px; width:5px; height:10px; border:solid #fff; border-width:0 2.5px 2.5px 0; transform:rotate(45deg)}
.ck.fail .ck-ic{border:none; background:var(--warn); animation:none}
.ck.fail .ck-ic::after{content:"!"; position:absolute; inset:0; color:#fff; font-weight:700; font-size:15px; text-align:center; line-height:24px}
.ck.active .ck-txt b{color:var(--blue)}

/* camera preview */
.preview-wrap{position:relative}
.cam{width:100%; aspect-ratio:4/3; background:#0c1420; border-radius:12px; object-fit:cover; transform:scaleX(-1); border:1px solid #cfd8e6}
.cam-tag{position:absolute; top:10px; left:10px; display:flex; align-items:center; gap:6px; background:rgba(0,0,0,.55); color:#fff; font-size:11px; font-weight:700; letter-spacing:1px; padding:4px 9px; border-radius:20px}
.prev-badges{margin-top:12px; display:flex; flex-wrap:wrap; gap:8px}
.meter{display:flex; align-items:center; gap:10px; margin-top:14px; font-size:11px; font-weight:700; color:var(--muted); letter-spacing:1px}
.meter-track{flex:1; height:8px; background:#e6ebf2; border-radius:6px; overflow:hidden}
.meter-track i{display:block; height:100%; width:0%; background:linear-gradient(90deg,#3ea55f,#e8a400,#c5221f); border-radius:6px; transition:width .08s linear}

.badge{font-size:12px; font-weight:600; padding:5px 11px; border-radius:20px; background:#eef1f6; color:#63748a; border:1px solid var(--line)}
.badge.on{background:rgba(19,115,51,.1); color:var(--ok); border-color:rgba(19,115,51,.25)}
.badge[data-off]{background:#f3f0ea; color:#9a7b2f}

/* gate */
.gate .gate-ic{margin-bottom:6px}
.gate h1{color:var(--warn)}

/* session */
.card.session{max-width:900px}
.sess-head{display:flex; align-items:flex-start; justify-content:space-between; gap:20px; margin-bottom:20px}
.status-chips{display:flex; flex-direction:column; gap:8px; flex:0 0 auto}
.chip{display:inline-flex; align-items:center; gap:8px; font-size:12.5px; font-weight:600; padding:6px 12px; border-radius:20px; background:#eef1f6; color:#63748a}
.chip.on{background:rgba(19,115,51,.1); color:var(--ok)}
.chip .dot{width:8px; height:8px; border-radius:50%; background:currentColor; box-shadow:0 0 0 0 currentColor; animation:pulse 1.6s infinite}
.sess-grid{display:grid; grid-template-columns:360px 1fr; gap:26px; align-items:start}
@media(max-width:720px){.sess-grid{grid-template-columns:1fr}.sess-head{flex-direction:column}.status-chips{flex-direction:row}}
.sess-info .kv{display:flex; justify-content:space-between; align-items:center; padding:10px 0; border-bottom:1px solid var(--line); font-size:14px}
.kv span{color:var(--muted)}
.kv b,.kv code{font-weight:600; font-variant-numeric:tabular-nums}
.kv code{background:#f0f3f8; padding:2px 8px; border-radius:6px}
.sig-list{display:flex; flex-wrap:wrap; gap:8px; margin-top:16px}
.notice{margin-top:22px; background:#fff8e6; border:1px solid #f2dfa3; color:#7a5c12; border-radius:10px; padding:14px 16px; font-size:13.5px; line-height:1.55}
.notice b{display:block; margin-bottom:2px; color:#5c4409}

/* admin link generator */
.admin-grid{display:grid; grid-template-columns:1fr 1fr; gap:6px 20px; margin-top:6px}
@media(max-width:640px){.admin-grid{grid-template-columns:1fr}}
.fld em{font-style:normal; color:#8493a4; font-weight:400}
.fld.out input{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace; font-size:13px; background:#f0f3f8}
#adResult{margin-top:18px; border-top:1px solid var(--line); padding-top:16px}
.admin-actions{display:flex; gap:10px; margin-top:4px}
.btn.ghost{width:auto; background:#eef2fb; color:var(--blue); border:1px solid #cdd9f0; box-shadow:none; text-decoration:none}
.btn.ghost:hover{background:#e2ebfb}

/* integrity guard overlay */
.devguard{position:fixed; inset:0; z-index:9999; display:flex; align-items:center; justify-content:center; padding:24px; text-align:center;
  background:rgba(9,13,22,.88); backdrop-filter:blur(7px); -webkit-backdrop-filter:blur(7px); animation:fade .2s ease}
.dg-box{max-width:470px; background:#1a212e; border:1px solid #7f1d1a; border-radius:16px; padding:36px 34px;
  box-shadow:0 24px 70px rgba(0,0,0,.55); animation:dgpulse 1.8s ease-in-out infinite}
@keyframes dgpulse{0%,100%{box-shadow:0 24px 70px rgba(0,0,0,.55),0 0 0 0 rgba(255,90,84,.0)}50%{box-shadow:0 24px 70px rgba(0,0,0,.55),0 0 0 4px rgba(255,90,84,.25)}}
.dg-ic{color:#ff5a54; margin-bottom:6px}
.dg-box h2{color:#ff6b64; margin:.2em 0 .5em; font-size:22px; letter-spacing:-.01em}
.dg-box p{color:#c9d2de; font-size:14.5px; line-height:1.6; margin:.5em 0}
.dg-box .dg-sub{color:#ffcf87; font-weight:600}
.dg-box .dg-sid{margin-top:18px; font-size:12px; color:#8b97a6}
.dg-sid code{background:rgba(255,255,255,.1); padding:2px 8px; border-radius:6px; color:#d7dee8}

/* footer */
.foot{display:flex; align-items:center; justify-content:center; gap:10px; flex-wrap:wrap;
  padding:14px; font-size:12px; color:#8493a4; border-top:1px solid var(--line); background:rgba(255,255,255,.5)}
.foot code{background:#eef1f6; padding:1px 6px; border-radius:5px}
.foot-sep{opacity:.5}
[hidden]{display:none !important}