:root {
  --bg: #f6f4f1;
  --surface: #ffffff;
  --border: #e0dbd3;
  --text: #1e1e1e;
  --muted: #6b6b6b;
  --accent: #c26a3a;
  --examiner: #ece7df;
  --student: #dcebe4;
  --flag: #c0392b;
  --ok: #2e7d52;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 15px/1.5 system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
}
header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px; background: var(--surface); border-bottom: 1px solid var(--border);
}
h1 { font-size: 18px; margin: 0; }
h2 { font-size: 15px; margin: 0 0 10px; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }
.tag { font-size: 11px; background: var(--accent); color: #fff; padding: 2px 7px; border-radius: 10px; vertical-align: middle; }
.provider { font-size: 12px; color: var(--muted); }
.back { font-size: 13px; color: var(--accent); text-decoration: none; }
.back:hover { text-decoration: underline; }
main { max-width: 820px; margin: 0 auto; padding: 24px; display: grid; gap: 20px; }

/* ---- examiner console layout ---- */
.layout { display: grid; grid-template-columns: 280px 1fr; gap: 20px; max-width: 1100px; margin: 0 auto; padding: 24px; align-items: start; }
.sidebar { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 14px; position: sticky; top: 24px; }
.editor { min-width: 0; }
.exam-list { list-style: none; margin: 10px 0 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.exam-list .muted { color: var(--muted); font-size: 13px; padding: 6px; }
.exam-item { display: flex; justify-content: space-between; align-items: center; gap: 8px; padding: 8px; border: 1px solid var(--border); border-radius: 8px; }
.exam-item.active { border-color: var(--accent); background: #fbf4ef; }
.exam-title { font-weight: 600; font-size: 13px; }
.exam-sub { font-size: 11px; color: var(--muted); }
.exam-actions { display: flex; gap: 4px; flex-shrink: 0; }

/* ---- form ---- */
.form-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.form-head > div { display: flex; gap: 8px; }
label { display: block; margin: 15px 0 4px; font-size: 14px; font-weight: 600; }
label .sub, .sub { font-weight: 400; color: var(--muted); font-size: 12px; }
input[type=text], input[type=number] { width: 100%; border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; font-size: 14px; background: #fff; color: var(--text); }
.section-head { display: flex; justify-content: space-between; align-items: center; margin-top: 28px; border-top: 2px solid var(--border); padding-top: 16px; }
.section-head h3 { margin: 0; font-size: 17px; font-weight: 700; }
.card { border: 1px solid var(--border); border-radius: 8px; padding: 12px; margin-top: 10px; background: #fcfbfa; }
.card-head { display: flex; justify-content: space-between; align-items: center; }
.card-tag { font-size: 11px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); font-weight: 700; }
.row2 { display: flex; gap: 12px; }
.row2 > div { flex: 1; }
.row2 .narrow { max-width: 110px; }
.radio-row { display: flex; gap: 20px; flex-wrap: wrap; margin-top: 4px; }
.radio-row .radio { display: flex; align-items: center; gap: 6px; margin: 0; font-weight: 400; cursor: pointer; }
.card-foot { margin-top: 10px; text-align: center; border-top: 1px dashed var(--border); padding-top: 10px; }
.upload-row { display: flex; align-items: center; gap: 10px; margin-top: 8px; flex-wrap: wrap; }
.upload-note { font-size: 12px; color: var(--muted); }
.status { font-size: 13px; color: var(--ok); min-height: 1em; margin: 6px 0 0; }
.status.error { color: var(--flag); }

button.ghost { background: none; color: var(--accent); border: 1px solid var(--accent); }
button.mini { margin: 0; padding: 4px 8px; font-size: 12px; background: #eee; color: var(--text); }
button.mini.danger { background: none; color: var(--flag); }
code { background: #eee; padding: 1px 4px; border-radius: 3px; font-size: 12px; }
@media (max-width: 760px) { .layout { grid-template-columns: 1fr; } .sidebar { position: static; } }
.panel { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 18px; }
.hidden { display: none !important; }
.hint { color: var(--muted); font-size: 13px; margin: 0 0 10px; }
textarea {
  width: 100%; border: 1px solid var(--border); border-radius: 8px; padding: 10px;
  font: 13px/1.5 ui-monospace, "SF Mono", Consolas, monospace; resize: vertical; background: #fff; color: var(--text);
}
#spec { height: 260px; }
button {
  margin-top: 12px; background: var(--accent); color: #fff; border: 0; border-radius: 8px;
  padding: 9px 16px; font-size: 14px; font-weight: 600; cursor: pointer;
}
button:disabled { opacity: .5; cursor: default; }
button.secondary { background: #4a4a4a; }
.error { color: var(--flag); font-size: 13px; min-height: 1em; }

.chat { display: flex; flex-direction: column; gap: 10px; margin-bottom: 12px; }
.bubble { padding: 10px 14px; border-radius: 10px; max-width: 88%; white-space: pre-wrap; }
.examiner { background: var(--examiner); align-self: flex-start; border-bottom-left-radius: 2px; }
.student { background: var(--student); align-self: flex-end; border-bottom-right-radius: 2px; }
.who { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; margin-bottom: 3px; }
.answer-row { display: flex; gap: 8px; align-items: flex-end; }
.answer-row textarea { flex: 1; }
.answer-row button { margin-top: 0; }
.thinking { color: var(--muted); font-style: italic; font-size: 13px; }
/* oral delivery */
#oral-area { border: 1px solid var(--border); border-radius: 10px; padding: 14px; margin-top: 8px; background: #fcfbfa; }
.oral-status { font-size: 13px; color: var(--muted); font-weight: 600; }
.oral-interim { min-height: 2.4em; margin: 10px 0; padding: 8px 10px; border-radius: 8px; background: #fff; border: 1px solid var(--border); font-size: 14px; color: var(--text); }
.oral-controls { display: flex; gap: 8px; }
#oral-done { background: var(--accent); }
#oral-confirm { margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--border); }
#oral-confirm button { margin-right: 8px; }
.sysnote { align-self: center; background: #fbe6e2; color: var(--flag); font-size: 13px; padding: 6px 12px; border-radius: 8px; }
.sysnote .retry { margin: 0 0 0 8px; padding: 3px 10px; font-size: 12px; background: var(--flag); }

/* grade */
.score-big { font-size: 40px; font-weight: 700; }
.marks-line { font-size: 15px; color: var(--muted); margin-left: 10px; }
.review-badge { display: inline-block; padding: 3px 10px; border-radius: 12px; font-size: 12px; font-weight: 600; margin-left: 12px; }
.review-badge.flag { background: #fbe6e2; color: var(--flag); }
.review-badge.ok { background: #e2f3ea; color: var(--ok); }
.results-controls { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
.results-controls .inline { display: flex; align-items: center; gap: 6px; margin: 0; font-weight: 600; font-size: 13px; }
.results-controls select { border: 1px solid var(--border); border-radius: 6px; padding: 5px 8px; font-size: 13px; background: #fff; color: var(--text); }
.results-controls button { margin: 0; }
.results-sub { font-size: 14px; margin: 18px 0 4px; color: var(--muted); }
table { width: 100%; border-collapse: collapse; margin-top: 14px; font-size: 13px; }
th, td { text-align: left; padding: 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; }
.spread-flag { color: var(--flag); font-weight: 600; }
.crit-name { font-weight: 600; }
details { margin-top: 14px; }
summary { cursor: pointer; color: var(--muted); font-size: 13px; }
.grader-card { border: 1px solid var(--border); border-radius: 8px; padding: 10px; margin-top: 8px; font-size: 13px; }

/* "What students see" checkboxes */
.check-col { display: flex; flex-direction: column; gap: 8px; margin: 6px 0 4px; }
.check { display: flex; align-items: baseline; gap: 8px; font-size: 14px; cursor: pointer; }
.check input { margin: 0; }

/* student result / submission receipt */
.submitted-note { background: #e2f3ea; color: var(--ok); border: 1px solid #bfe3cf; border-radius: 8px; padding: 14px 16px; font-size: 14px; }
.overall-comment { margin-top: 14px; padding: 10px 12px; background: var(--examiner); border-radius: 8px; font-size: 14px; }
.fb-cell { white-space: pre-wrap; }

/* examiner: clickable attempt rows + transcript modal */
tr.attempt-row { cursor: pointer; }
tr.attempt-row:hover { background: #faf7f3; }
.row-open { color: var(--accent); font-size: 12px; white-space: nowrap; }
.modal { position: fixed; inset: 0; background: rgba(30,28,25,.5); display: flex; align-items: flex-start; justify-content: center; padding: 40px 16px; overflow-y: auto; z-index: 50; }
.modal-box { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 20px 24px; max-width: 760px; width: 100%; box-shadow: 0 10px 40px rgba(0,0,0,.2); }
.modal-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 6px; }
.modal-head h2 { margin: 0; text-transform: none; letter-spacing: 0; font-size: 16px; color: var(--text); }
.transcript { display: flex; flex-direction: column; gap: 8px; margin-top: 4px; }
.transcript .bubble { max-width: 100%; font-size: 14px; }
.bubble-who { display: block; font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; margin-bottom: 3px; }

/* billing: credits button + packs */
.header-right { display: flex; align-items: center; gap: 14px; }
.credits-btn { margin: 0; font-size: 13px; padding: 5px 12px; border-radius: 14px; }
.credits-btn.low { background: #fbe6e2; color: var(--flag); border-color: #f0c8c0; }
.pack-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px; margin-top: 8px; }
.pack-card { display: flex; flex-direction: column; gap: 3px; align-items: flex-start; text-align: left; padding: 12px 14px; border: 1px solid var(--border); border-radius: 10px; background: #fff; cursor: pointer; margin: 0; }
.pack-card:hover { border-color: var(--accent); }
.pack-card:disabled { opacity: .5; cursor: default; }
.pack-credits { font-weight: 700; font-size: 15px; color: var(--text); }
.pack-price { font-size: 14px; color: var(--accent); font-weight: 600; }
.pack-unit { font-size: 12px; color: var(--muted); }

/* auth: header identity + login page */
.whoami { font-size: 12px; color: var(--muted); }
.whoami-logout { font-size: 12px; color: var(--accent); text-decoration: none; }
.whoami-logout:hover { text-decoration: underline; }
.login-panel { max-width: 440px; margin: 8vh auto 0; text-align: center; }
.login-panel h2 { color: var(--text); text-transform: none; letter-spacing: 0; font-size: 20px; }
.google-btn { display: inline-flex; align-items: center; gap: 10px; margin-top: 8px; padding: 11px 20px; border: 1px solid var(--border); border-radius: 8px; background: #fff; color: var(--text); text-decoration: none; font-weight: 600; font-size: 15px; }
.google-btn:hover { border-color: var(--accent); }
.google-btn .g { display: inline-flex; align-items: center; justify-content: center; width: 22px; height: 22px; border-radius: 50%; background: #4285f4; color: #fff; font-weight: 700; }

/* footer with legal links */
.site-footer { text-align: center; padding: 20px; color: var(--muted); font-size: 12px; }
.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--accent); text-decoration: underline; }