/* ===== Examination Portal styles ===== */
:root{
  --bg:#0f172a; --panel:#1e293b; --panel2:#273449; --line:#334155;
  --text:#e2e8f0; --muted:#94a3b8; --primary:#6366f1; --primary-d:#4f46e5;
  --green:#22c55e; --red:#ef4444; --amber:#f59e0b;
}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,"Segoe UI",Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}
a{color:var(--primary)}
h1,h2,h3{line-height:1.2}

/* ---- Buttons / inputs ---- */
.btn-primary{background:var(--primary);color:#fff;border:0;padding:12px 20px;border-radius:10px;font-size:16px;font-weight:600;cursor:pointer;transition:.15s}
.btn-primary:hover{background:var(--primary-d)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--line);padding:12px 20px;border-radius:10px;font-size:15px;cursor:pointer}
.btn-sm{padding:7px 12px;font-size:13px;border-radius:8px}
.btn-danger{background:var(--red);color:#fff;border:0;padding:8px 14px;border-radius:8px;cursor:pointer}
input[type=text],input[type=password],input[type=number],select,textarea{
  width:100%;padding:11px 12px;margin-top:6px;background:#0f172a;border:1px solid var(--line);
  border-radius:8px;color:var(--text);font-size:15px}
input:focus,select:focus,textarea:focus{outline:2px solid var(--primary);border-color:var(--primary)}
label{display:block;margin:14px 0;font-weight:600;font-size:14px;color:var(--muted)}
label input,label select{font-weight:400;color:var(--text)}

/* ---- Entry / result pages ---- */
.entry-page{min-height:100vh;display:flex;align-items:center;justify-content:center;
  background:radial-gradient(1200px 600px at 50% -10%,#1e293b, #0f172a)}
.entry-wrap{width:100%;max-width:460px;padding:20px}
.entry-card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:30px;box-shadow:0 20px 60px rgba(0,0,0,.4)}
.entry-card h1{margin:.2em 0;font-size:24px}
.subject{color:var(--muted);margin-top:0}
.badge{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.5px;padding:5px 10px;border-radius:20px}
.badge.practice{background:#0e7490;color:#e0f2fe}
.badge.main{background:#7c3aed;color:#ede9fe}
.meta-list{list-style:none;padding:0;margin:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.meta-list li{padding:9px 0;border-bottom:1px dashed var(--line);color:var(--muted);font-size:14px}
.meta-list li:last-child{border-bottom:0}
.closed-note{background:#3f1d1d;border:1px solid #7f1d1d;color:#fecaca;padding:14px;border-radius:10px;margin:14px 0}
.footer-note{color:var(--muted);font-size:12px;margin-top:18px;text-align:center}
.result-card{text-align:center}
.result-icon{font-size:54px;margin-bottom:6px}
.score-big{font-size:44px;font-weight:800;margin:14px 0 4px}
.score-pct{font-weight:700;font-size:18px}
.score-pct.pass{color:var(--green)}.score-pct.fail{color:var(--amber)}

/* ---- Modal ---- */
.modal-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.65);display:flex;align-items:center;justify-content:center;z-index:50;padding:20px}
.modal-backdrop[hidden]{display:none}
.modal{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:26px;max-width:440px;width:100%}
.modal.danger{border-color:#7f1d1d}
.modal h2{margin-top:0}
.confirm-row{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px dashed var(--line)}
.confirm-row span{color:var(--muted)}
.modal-actions{display:flex;gap:10px;margin-top:20px;justify-content:flex-end;flex-wrap:wrap}

/* ---- Exam page ---- */
.no-select{user-select:none;-webkit-user-select:none;-ms-user-select:none}
.exam-page{background:#0b1220}
.fs-gate{position:fixed;inset:0;background:#0b1220;display:flex;align-items:center;justify-content:center;z-index:100;padding:20px}
.fs-box{max-width:520px;background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:32px}
.fs-box ul{padding-left:18px;color:var(--muted)}
.fs-box li{margin:8px 0}
.warn{color:var(--amber)}
.exam-bar{position:sticky;top:0;z-index:20;display:flex;justify-content:space-between;align-items:center;gap:12px;
  padding:12px 20px;background:#111c30;border-bottom:1px solid var(--line);flex-wrap:wrap}
.exam-title{font-weight:700}
.exam-stats{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.pill{background:var(--panel2);border:1px solid var(--line);padding:7px 12px;border-radius:20px;font-size:13px}
.pill.timer{font-variant-numeric:tabular-nums;font-weight:700;font-size:16px;background:#0e7490;border-color:#0e7490}
.pill.timer.low{background:var(--red);border-color:var(--red);animation:pulse 1s infinite}
@keyframes pulse{50%{opacity:.55}}
.exam-main{max-width:760px;margin:0 auto;padding:26px 18px 40px}
.exam-page .q-card{display:none}
.exam-page .q-card.active{display:block;animation:fadeIn .18s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.q-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:24px;min-height:220px}
.q-card.answered{border-color:#3b5bdb}
.q-head{font-size:16px;font-weight:600;margin-bottom:14px;display:flex;gap:10px}
.q-num{background:var(--primary);color:#fff;min-width:28px;height:28px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;font-size:13px;flex:0 0 auto}
.opt{display:flex;align-items:center;gap:12px;padding:11px 12px;border:1px solid var(--line);border-radius:10px;margin:8px 0;cursor:pointer;transition:.12s}
.opt:hover{background:var(--panel2)}
.opt input{accent-color:var(--primary);width:18px;height:18px}
.opt-letter{font-weight:700;color:var(--muted);min-width:18px}
.opt.chosen{border-color:var(--primary);background:#1b2547}

/* One-per-page navigation */
.pager{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:20px}
.pager-info{color:var(--muted);font-size:14px;font-variant-numeric:tabular-nums}
.q-nav{display:flex;flex-wrap:wrap;gap:7px;margin-top:22px;justify-content:center}
.q-dot{width:34px;height:34px;border-radius:8px;border:1px solid var(--line);background:var(--panel2);
  color:var(--text);font-size:13px;font-weight:600;cursor:pointer;transition:.12s}
.q-dot:hover{border-color:var(--primary)}
.q-dot.done{background:#064e3b;border-color:#065f46;color:#a7f3d0}
.q-dot.current{outline:2px solid var(--primary);outline-offset:1px}

/* ---- Admin ---- */
.admin-body{background:var(--bg)}
.admin-top{background:#111c30;border-bottom:1px solid var(--line);padding:14px 22px;display:flex;justify-content:space-between;align-items:center}
.admin-top .brand{font-weight:800;font-size:18px}
.admin-nav{display:flex;gap:6px;flex-wrap:wrap}
.admin-nav a{padding:8px 14px;border-radius:8px;color:var(--text);text-decoration:none;font-size:14px}
.admin-nav a.active,.admin-nav a:hover{background:var(--panel2)}
.admin-wrap{max-width:1100px;margin:26px auto;padding:0 20px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:22px;margin-bottom:20px}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;margin-bottom:20px}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:18px}
.stat .n{font-size:30px;font-weight:800}
.stat .l{color:var(--muted);font-size:13px}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}
th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.4px}
tr:hover td{background:#1b283d}
.tag{display:inline-block;padding:3px 9px;border-radius:20px;font-size:12px;font-weight:600}
.tag.in_progress{background:#78350f;color:#fde68a}
.tag.completed{background:#064e3b;color:#a7f3d0}
.tag.terminated{background:#7f1d1d;color:#fecaca}
.toolbar{display:flex;gap:10px;justify-content:space-between;align-items:center;margin-bottom:16px;flex-wrap:wrap}
.flash{background:#064e3b;border:1px solid #065f46;color:#a7f3d0;padding:12px 14px;border-radius:10px;margin-bottom:16px}
.flash.err{background:#3f1d1d;border-color:#7f1d1d;color:#fecaca}
.login-wrap{max-width:380px;margin:9vh auto}
.muted{color:var(--muted)}
.right{text-align:right}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:640px){.grid2{grid-template-columns:1fr}}
.q-admin{border:1px solid var(--line);border-radius:10px;padding:14px;margin-bottom:10px;background:var(--panel2)}
.q-admin .correct{color:var(--green);font-weight:700}
.bar{height:8px;background:#0f172a;border-radius:6px;overflow:hidden;margin-top:6px}
.bar>i{display:block;height:100%;background:var(--primary)}