:root{
  --bg:#061421;
  --bg-2:#0b1b2b;
  --panel:rgba(255,255,255,.08);
  --panel-2:rgba(255,255,255,.12);
  --panel-3:rgba(255,255,255,.16);
  --stroke:rgba(255,255,255,.14);
  --text:#f4f8fb;
  --muted:#a9bbc9;
  --muted-2:#7890a3;
  --primary:#40e0d0;
  --primary-2:#7c5cff;
  --danger:#ff647c;
  --success:#62e38f;
  --warning:#ffd166;
  --shadow:0 24px 80px rgba(0,0,0,.35);
  --radius:24px;
  --radius-sm:16px;
  --font:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  color:var(--text);
  min-height:100vh;
  background:
    radial-gradient(circle at top left, rgba(64,224,208,.22), transparent 36rem),
    radial-gradient(circle at bottom right, rgba(124,92,255,.22), transparent 32rem),
    linear-gradient(135deg,#061421,#091827 45%,#07111d);
}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
a{color:var(--primary)}
.app-shell{display:grid;grid-template-columns:292px 1fr;min-height:100vh}
.sidebar{
  position:sticky;top:0;height:100vh;padding:24px 18px;
  border-right:1px solid var(--stroke);
  background:rgba(4,13,23,.78);backdrop-filter:blur(24px);
  display:flex;flex-direction:column;gap:22px;z-index:30;
}
.brand{display:flex;align-items:center;gap:14px;padding:10px}
.brand-mark{
  width:48px;height:48px;border-radius:16px;
  display:grid;place-items:center;font-weight:900;letter-spacing:-.08em;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  color:#04121f;box-shadow:0 16px 40px rgba(64,224,208,.24)
}
.brand strong{display:block;font-size:1.04rem}
.brand span{display:block;color:var(--muted);font-size:.82rem;margin-top:2px}
.nav{display:grid;gap:8px}
.nav-item{
  width:100%;border:0;border-radius:16px;padding:13px 14px;
  text-align:left;color:var(--muted);background:transparent;
  transition:.2s ease;position:relative;
}
.nav-item:hover{background:var(--panel);color:var(--text);transform:translateX(3px)}
.nav-item.active{
  color:var(--text);background:linear-gradient(90deg,rgba(64,224,208,.20),rgba(124,92,255,.13));
  box-shadow:inset 0 0 0 1px rgba(64,224,208,.18)
}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:999px;background:var(--primary)
}
.sidebar-footer{margin-top:auto;padding:12px;color:var(--muted);font-size:.86rem}
.mini-progress{height:7px;border-radius:999px;background:rgba(255,255,255,.10);overflow:hidden;margin-bottom:10px}
.mini-progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--primary),var(--primary-2));transition:.4s ease}
.main{min-width:0;padding:24px 28px 46px}
.topbar{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:10px 0 28px;
}
.topbar h1{margin:0;font-size:clamp(1.7rem,2.5vw,2.8rem);letter-spacing:-.06em}
.topbar p{margin:.35rem 0 0;color:var(--muted)}
.top-actions{display:flex;align-items:center;gap:12px}
.exam-pill,.chip{
  border:1px solid var(--stroke);background:var(--panel);
  color:var(--text);border-radius:999px;padding:10px 14px;font-size:.9rem;
  backdrop-filter:blur(14px)
}
.avatar{
  width:48px;height:48px;border-radius:50%;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(64,224,208,.9),rgba(124,92,255,.9));
  color:#04121f;font-weight:900;overflow:hidden;border:1px solid rgba(255,255,255,.24)
}
.avatar img{width:100%;height:100%;object-fit:cover}
.hamburger{display:none;border:1px solid var(--stroke);background:var(--panel);color:var(--text);border-radius:14px;padding:10px 12px}
.view{animation:fade .28s ease both}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.grid{display:grid;gap:18px}
.grid.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{
  border:1px solid var(--stroke);border-radius:var(--radius);background:linear-gradient(180deg,rgba(255,255,255,.10),rgba(255,255,255,.055));
  box-shadow:var(--shadow);backdrop-filter:blur(24px);padding:22px;position:relative;overflow:hidden;
}
.card::after{content:"";position:absolute;inset:-1px;pointer-events:none;border-radius:inherit;background:linear-gradient(135deg,rgba(255,255,255,.18),transparent 35%,rgba(64,224,208,.12));mask:linear-gradient(#000,#000) content-box,linear-gradient(#000,#000);-webkit-mask-composite:xor;mask-composite:exclude;padding:1px}
.card.flat{box-shadow:none;background:rgba(255,255,255,.065)}
.card-title{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:16px}
.card-title h2,.card-title h3{margin:0;letter-spacing:-.04em}
.card-title p{margin:.35rem 0 0;color:var(--muted);font-size:.92rem}
.kpi{padding:18px}
.kpi .label{color:var(--muted);font-size:.86rem}
.kpi .value{font-size:2.2rem;font-weight:900;letter-spacing:-.08em;margin-top:6px}
.kpi .hint{font-size:.85rem;color:var(--muted);margin-top:5px}
.hero{
  display:grid;grid-template-columns:1.4fr .9fr;gap:18px;align-items:stretch;
}
.hero-main{min-height:240px;display:flex;flex-direction:column;justify-content:space-between}
.hero-main h2{font-size:clamp(1.8rem,3vw,3.4rem);line-height:.98;margin:0 0 14px;letter-spacing:-.08em}
.hero-main p{color:var(--muted);max-width:66ch;line-height:1.65}
.gradient-text{background:linear-gradient(90deg,var(--primary),#fff,var(--primary-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.btn{
  border:1px solid rgba(255,255,255,.16);border-radius:14px;padding:11px 14px;
  color:var(--text);background:var(--panel-2);transition:.18s ease;text-decoration:none;display:inline-flex;align-items:center;gap:8px;
}
.btn:hover{transform:translateY(-1px);background:var(--panel-3)}
.btn.primary{background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#04121f;font-weight:800;border-color:transparent}
.btn.success{background:rgba(98,227,143,.16);border-color:rgba(98,227,143,.35);color:#d8ffe4}
.btn.danger{background:rgba(255,100,124,.16);border-color:rgba(255,100,124,.35);color:#ffdbe1}
.btn.warning{background:rgba(255,209,102,.15);border-color:rgba(255,209,102,.35);color:#fff2c2}
.btn.ghost{background:transparent}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.field{display:grid;gap:7px}
.field label{font-size:.86rem;color:var(--muted)}
.input,select,textarea{
  width:100%;border:1px solid var(--stroke);border-radius:14px;padding:12px 13px;color:var(--text);
  background:rgba(0,0,0,.16);outline:none;transition:.18s ease;
}
textarea{min-height:110px;resize:vertical}
.input:focus,select:focus,textarea:focus{border-color:rgba(64,224,208,.55);box-shadow:0 0 0 4px rgba(64,224,208,.10)}
.toolbar{display:flex;gap:10px;align-items:center;justify-content:space-between;flex-wrap:wrap;margin-bottom:16px}
.filters{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.question-card{display:grid;gap:16px}
.question-meta{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.badge{border:1px solid var(--stroke);background:rgba(255,255,255,.08);border-radius:999px;padding:6px 9px;color:var(--muted);font-size:.78rem}
.badge.good{background:rgba(98,227,143,.13);border-color:rgba(98,227,143,.28);color:#bffbd2}
.badge.bad{background:rgba(255,100,124,.13);border-color:rgba(255,100,124,.28);color:#ffd0d8}
.badge.warn{background:rgba(255,209,102,.13);border-color:rgba(255,209,102,.28);color:#ffedb0}
.stem{font-size:1.15rem;line-height:1.55;font-weight:700}
.options{display:grid;gap:10px}
.option{
  display:grid;grid-template-columns:22px 34px minmax(0,1fr);align-items:start;gap:10px;
  border:1px solid var(--stroke);background:rgba(255,255,255,.06);border-radius:16px;padding:13px;transition:.18s ease;
  cursor:pointer;
}
.option:hover{background:rgba(255,255,255,.10);transform:translateY(-1px)}
.option input{accent-color:var(--primary);width:18px;height:18px;margin-top:5px;justify-self:center}
.option .key{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.10);font-weight:800;color:var(--primary);text-transform:uppercase}
.option .option-text{min-width:0;line-height:1.42;padding-top:3px;overflow-wrap:break-word;word-break:normal}
.option input:disabled{cursor:not-allowed}
.option.correct{border-color:rgba(98,227,143,.7);background:rgba(98,227,143,.12)}
.option.wrong{border-color:rgba(255,100,124,.7);background:rgba(255,100,124,.12)}
.feedback{display:grid;gap:12px;margin-top:10px}
.feedback-block{border:1px solid var(--stroke);border-radius:18px;background:rgba(0,0,0,.16);padding:16px;line-height:1.55}
.feedback-block h4{margin:0 0 8px;color:var(--primary)}
.feedback-block.warning h4{color:var(--warning)}
.feedback-block.danger h4{color:var(--danger)}
.progress-ring{
  width:160px;height:160px;border-radius:50%;display:grid;place-items:center;margin:auto;
  background:conic-gradient(var(--primary) var(--pct,0%),rgba(255,255,255,.10) 0);
  position:relative;
}
.progress-ring::before{content:"";position:absolute;inset:13px;border-radius:50%;background:#071625;border:1px solid var(--stroke)}
.progress-ring strong{position:relative;font-size:2rem;letter-spacing:-.06em}
.table-wrap{overflow:auto;border-radius:18px;border:1px solid var(--stroke)}
table{width:100%;border-collapse:collapse;min-width:760px;background:rgba(255,255,255,.045)}
th,td{text-align:left;padding:13px 14px;border-bottom:1px solid rgba(255,255,255,.09);vertical-align:top}
th{color:#d8f5f2;font-size:.86rem;background:rgba(64,224,208,.09);position:sticky;top:0}
td{color:#dbe7ef;font-size:.92rem;line-height:1.45}
tr:last-child td{border-bottom:0}
.flashcard{
  min-height:260px;display:grid;place-items:center;text-align:center;perspective:1000px;
}
.flash-inner{
  width:100%;min-height:240px;border-radius:24px;border:1px solid var(--stroke);
  background:linear-gradient(135deg,rgba(64,224,208,.11),rgba(124,92,255,.11));
  padding:26px;display:grid;place-items:center;transition:.35s ease;transform-style:preserve-3d;position:relative;
}
.flash-inner.flipped{transform:rotateY(180deg)}
.flash-face{position:absolute;inset:0;display:grid;place-items:center;padding:26px;backface-visibility:hidden;line-height:1.6}
.flash-back{transform:rotateY(180deg)}
.chart-row{display:grid;grid-template-columns:190px 1fr 58px;gap:12px;align-items:center;margin:12px 0}
.bar{height:12px;border-radius:999px;background:rgba(255,255,255,.10);overflow:hidden}
.bar span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--danger),var(--warning),var(--success));transition:.4s ease}
.small{font-size:.86rem;color:var(--muted)}
.empty-state{text-align:center;padding:50px 18px;color:var(--muted)}
.empty-icon{font-size:3rem;margin-bottom:10px}.empty-state h3{color:var(--text);margin:.2rem 0}
.split{display:grid;grid-template-columns:1fr 360px;gap:18px;align-items:start}
.list{display:grid;gap:10px}.list-item{padding:14px;border:1px solid var(--stroke);background:rgba(255,255,255,.055);border-radius:16px}.list-item strong{display:block;margin-bottom:4px}.list-item p{margin:0;color:var(--muted);line-height:1.5}
.status-dot{width:10px;height:10px;border-radius:50%;display:inline-block;margin-right:8px;background:var(--muted)}.status-dot.good{background:var(--success)}.status-dot.bad{background:var(--danger)}.status-dot.warn{background:var(--warning)}
.toast{
  position:fixed;right:22px;bottom:22px;z-index:80;background:#0d2335;color:var(--text);
  border:1px solid var(--stroke);box-shadow:var(--shadow);border-radius:16px;padding:14px 16px;max-width:min(420px,calc(100vw - 32px));animation:toast .25s ease both;
}
@keyframes toast{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.hidden{display:none!important}.center{text-align:center}.mt{margin-top:18px}.muted{color:var(--muted)}.nowrap{white-space:nowrap}.danger-text{color:var(--danger)}.success-text{color:var(--success)}.warning-text{color:var(--warning)}
@media(max-width:1100px){.grid.cols-4{grid-template-columns:repeat(2,1fr)}.hero,.split{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}}
@media(max-width:860px){
  .app-shell{grid-template-columns:1fr}.sidebar{position:fixed;left:-310px;transition:.25s ease;width:292px}.sidebar.open{left:0}.hamburger{display:inline-flex}.main{padding:18px}.topbar{align-items:flex-start}.top-actions{display:none}.grid.cols-2,.grid.cols-3,.grid.cols-4{grid-template-columns:1fr}.toolbar{align-items:stretch}.filters{width:100%}.filters .input,.filters select{flex:1;min-width:160px}
}


/* ECOE / OSCE */
.ecoe-hero .hero-main p{max-width:900px}
.ecoe-split{grid-template-columns:minmax(0,1fr) 390px}
.ecoe-list{max-height:760px;overflow:auto;padding-right:4px}
.timer-box h2{font-size:2.8rem;letter-spacing:-.07em;margin:.5rem 0}
.ecoe-station h2{margin:.7rem 0 1rem;font-size:1.65rem}
.case-body{display:grid;gap:12px;margin:14px 0}
.case-section{border:1px solid var(--stroke);border-radius:18px;background:rgba(255,255,255,.045);padding:15px;line-height:1.55}
.case-section h4{margin:0 0 8px;color:#d8f5f2}
.case-section p{margin:0;white-space:pre-wrap;color:#eaf2f7}
.ecoe-tasks{display:grid;gap:14px;margin-top:16px}
.prompt-card{border:1px solid var(--stroke);border-radius:20px;background:rgba(0,0,0,.16);padding:15px;display:grid;gap:12px}
.prompt-head{display:flex;justify-content:space-between;gap:12px;align-items:flex-start;flex-wrap:wrap}
.ecoe-answer{min-height:112px}
.rubric-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;align-items:start}
.rubric-grid ul,.feedback-block ul{margin:8px 0 0 18px;padding:0;line-height:1.55;color:#dbe7ef}
.ecoe-score{margin-top:8px;max-width:140px}
@media(max-width:1100px){.ecoe-split,.rubric-grid{grid-template-columns:1fr}}