:root{
  --bg:#F6F4EF; --paper:#FFFFFF; --ink:#1D1B2E; --ink-soft:#615F72; --ink-faint:#9997A6;
  --primary:#463A8C; --primary-dark:#302559; --primary-tint:#EEEAFB; --line:#E4E0D8;
  --success:#1E8E5A; --success-tint:#E5F5EC; --danger:#C4432F; --danger-tint:#FBEAE6;
  --warning:#B9821F; --warning-tint:#FBF1DE; --radius:12px;
  --shadow:0 1px 2px rgba(29,27,46,0.06), 0 8px 24px rgba(29,27,46,0.06);
}
*{box-sizing:border-box;}
body{ margin:0; background:var(--bg); color:var(--ink); font-family:'Inter',system-ui,sans-serif; font-size:15px; line-height:1.5; }
h1,h2,h3{ font-family:'Fraunces',Georgia,serif; letter-spacing:-0.01em; margin:0 0 6px; }
h1{ font-size:32px; font-weight:600; } h2{ font-size:22px; font-weight:600; } h3{ font-size:17px; font-weight:600; margin:0;}
a{ color:inherit; }
label{ display:block; font-size:12.5px; font-weight:600; color:var(--ink-soft); margin-bottom:6px; }
input,select,textarea{
  width:100%; padding:10px 12px; border:1px solid var(--line); border-radius:8px; background:var(--paper);
  color:var(--ink); font-family:inherit; font-size:14px;
}
textarea{ resize:vertical; min-height:70px; }
.field{ margin-bottom:14px; }
.field-row{ display:grid; grid-template-columns:1fr 1fr; gap:14px; }
@media(max-width:640px){ .field-row{ grid-template-columns:1fr; } }
.hint{ font-size:12px; color:var(--ink-faint); margin-top:4px; }
.checkbox-row{ display:flex; align-items:center; gap:8px; }
.checkbox-row input{ width:auto; }

.btn{ display:inline-flex; align-items:center; justify-content:center; gap:6px; padding:9px 16px; border-radius:9px;
  border:1px solid transparent; font-weight:600; cursor:pointer; text-decoration:none; font-size:14px; }
.btn-primary{ background:var(--primary); color:#fff; }
.btn-primary:hover{ background:var(--primary-dark); }
.btn-outline{ background:var(--paper); border:1px solid var(--line); color:var(--ink); }
.btn-outline:hover{ border-color:var(--primary); color:var(--primary-dark); }
.btn-danger{ background:var(--paper); border:1px solid var(--danger); color:var(--danger); }
.btn-sm{ padding:6px 11px; font-size:12.5px; border-radius:7px; }
.btn-block{ width:100%; }

.card{ background:var(--paper); border:1px solid var(--line); border-radius:var(--radius); padding:20px; }
.card + .card{ margin-top:16px; }
.grid{ display:grid; gap:16px; }
.grid.cols-2{ grid-template-columns:repeat(2,1fr); }
.grid.cols-3{ grid-template-columns:repeat(3,1fr); }
.grid.cols-4{ grid-template-columns:repeat(4,1fr); }
@media(max-width:900px){ .grid.cols-4,.grid.cols-3{ grid-template-columns:repeat(2,1fr); } }
@media(max-width:600px){ .grid.cols-4,.grid.cols-3,.grid.cols-2{ grid-template-columns:1fr; } }

.stat-card{ background:var(--paper); border:1px solid var(--line); border-radius:var(--radius); padding:18px; }
.stat-num{ font-family:'Fraunces',serif; font-size:28px; font-weight:600; }
.stat-label{ font-size:12.5px; color:var(--ink-soft); margin-top:4px; }

table{ width:100%; border-collapse:collapse; font-size:13.5px; }
th{ text-align:left; color:var(--ink-soft); font-weight:600; font-size:12px; text-transform:uppercase; letter-spacing:.04em; padding:8px 10px; border-bottom:1px solid var(--line); }
td{ padding:10px; border-bottom:1px solid var(--line); vertical-align:middle; }
tr:last-child td{ border-bottom:none; }
.table-wrap{ overflow-x:auto; }

.badge{ display:inline-flex; align-items:center; gap:5px; padding:3px 9px; border-radius:100px; font-size:11.5px; font-weight:600; }
.badge.success{ background:var(--success-tint); color:var(--success); }
.badge.danger{ background:var(--danger-tint); color:var(--danger); }
.badge.warning{ background:var(--warning-tint); color:var(--warning); }
.badge.neutral{ background:var(--primary-tint); color:var(--primary-dark); }

.alert{ padding:11px 16px; border-radius:9px; font-size:13.5px; margin-bottom:16px; }
.alert-success{ background:var(--success-tint); color:var(--success); }
.alert-error{ background:var(--danger-tint); color:var(--danger); }

.topbar{ display:flex; align-items:center; justify-content:space-between; padding:14px 28px; background:var(--paper); border-bottom:1px solid var(--line); }
.brand{ display:flex; align-items:center; gap:10px; font-family:'Fraunces',serif; font-weight:600; font-size:19px; }
.brand-mark{ width:32px; height:32px; border-radius:8px; background:var(--primary); color:#fff; display:flex; align-items:center; justify-content:center; font-family:'Fraunces',serif; font-weight:600; }
.nav-links a{ padding:8px 14px; border-radius:8px; color:var(--ink-soft); font-weight:500; text-decoration:none; margin-right:2px; }
.nav-links a.active{ background:var(--primary-tint); color:var(--primary-dark); }
.topbar-right{ display:flex; align-items:center; gap:14px; }
.avatar{ width:28px; height:28px; border-radius:50%; background:var(--primary-tint); color:var(--primary-dark); display:flex; align-items:center; justify-content:center; font-weight:600; font-size:12px; }

main{ max-width:1100px; margin:0 auto; padding:28px; }
main.narrow{ max-width:640px; }

.photo-circle{ width:80px; height:80px; border-radius:50%; background:var(--bg); border:1px dashed var(--ink-faint);
  display:flex; align-items:center; justify-content:center; overflow:hidden; color:var(--ink-faint); font-size:10.5px; text-align:center; flex-shrink:0; }
.photo-circle img{ width:100%; height:100%; object-fit:cover; }
.photo-upload{ display:flex; align-items:center; gap:14px; }

.profile-grid{ display:grid; grid-template-columns:90px 1fr; gap:18px; }
.profile-fact{ font-size:13px; padding:6px 0; border-bottom:1px solid var(--line); display:flex; justify-content:space-between; gap:10px; }
.profile-fact span:first-child{ color:var(--ink-soft); }

.login-wrap{ min-height:100vh; display:flex; align-items:center; justify-content:center; padding:24px; }
.login-shell{ display:flex; max-width:900px; width:100%; background:var(--paper); border-radius:20px; overflow:hidden; box-shadow:var(--shadow); border:1px solid var(--line); }
.login-intro{ flex:1; background:var(--primary-dark); color:#fff; padding:40px 36px; }
.login-intro h1{ color:#fff; }
.login-form-side{ flex:1; padding:40px 36px; }
.role-tabs{ display:flex; background:var(--bg); border-radius:10px; padding:4px; margin-bottom:22px; }
.role-tab{ flex:1; text-align:center; padding:9px; border-radius:8px; text-decoration:none; font-weight:600; color:var(--ink-soft); }
.role-tab.active{ background:var(--paper); color:var(--primary-dark); box-shadow:0 1px 3px rgba(0,0,0,0.08); }
@media(max-width:760px){ .login-shell{ flex-direction:column; } }
.fee-row{ display:flex; justify-content:space-between; align-items:center; padding:14px 0; border-top:1px dashed var(--line); border-bottom:1px dashed var(--line); margin:16px 0; }
.fee-amount{ font-family:'Fraunces',serif; font-size:26px; font-weight:600; }
.pay-methods{ display:flex; gap:8px; margin-bottom:16px; }
.pay-method{ flex:1; padding:10px; border-radius:9px; border:1px solid var(--line); text-align:center; font-weight:600; font-size:13px; }

/* Exam-taking screen */
.exam-shell{ display:flex; flex-direction:column; min-height:100vh; background:#FBFAF7; }
.exam-topbar{ display:flex; align-items:center; justify-content:space-between; padding:14px 24px; background:var(--paper); border-bottom:1px solid var(--line); flex-wrap:wrap; gap:10px; }
.exam-meta{ font-size:13px; color:var(--ink-soft); }
.timer{ font-family:'Fraunces',serif; font-variant-numeric:tabular-nums; font-size:22px; font-weight:600; padding:6px 16px; border-radius:8px; background:var(--primary-tint); color:var(--primary-dark); }
.timer.low{ background:var(--danger-tint); color:var(--danger); }
.exam-body{ flex:1; display:flex; }
.exam-main{ flex:1; padding:28px 32px; max-width:760px; }
.q-text{ font-size:18px; font-weight:500; line-height:1.55; margin:14px 0 22px; }
.option-row{ display:flex; align-items:flex-start; gap:12px; padding:13px 14px; border:1px solid var(--line); border-radius:10px; margin-bottom:10px; cursor:pointer; }
.option-row:hover{ border-color:var(--primary); }
.option-row.selected{ border-color:var(--primary); background:var(--primary-tint); }
.option-row input{ margin-top:2px; width:auto; }
.exam-actions{ display:flex; gap:10px; margin-top:24px; flex-wrap:wrap; }
.exam-sidebar{ width:280px; border-left:1px solid var(--line); background:var(--paper); padding:22px; flex-shrink:0; }
@media(max-width:900px){ .exam-body{flex-direction:column;} .exam-sidebar{width:auto; border-left:none; border-top:1px solid var(--line);} }
.qgrid{ display:grid; grid-template-columns:repeat(5,1fr); gap:8px; margin:14px 0 18px; }
.qcell{ aspect-ratio:1; border-radius:7px; border:1px solid var(--line); background:var(--paper); font-size:12.5px; font-weight:600; display:flex; align-items:center; justify-content:center; color:var(--ink-soft); cursor:pointer; }
.qcell.answered{ background:var(--success); border-color:var(--success); color:#fff; }
.qcell.notanswered{ background:var(--danger-tint); border-color:var(--danger); color:var(--danger); }
.qcell.review{ background:var(--primary); border-color:var(--primary); color:#fff; }
.qcell.review-answered{ background:var(--primary); border-color:var(--success); color:#fff; box-shadow:inset 0 0 0 2px var(--success); }
.qcell.locked{ opacity:.55; }
.qcell.current{ outline:2px solid var(--ink); outline-offset:2px; }
.legend{ font-size:11.5px; color:var(--ink-soft); display:flex; align-items:center; gap:6px; margin-bottom:5px;}
.legend .dot{ width:10px; height:10px; border-radius:3px; display:inline-block; }