:root {
  --bg: #f4f0e8;
  --ink: #18232f;
  --muted: #697386;
  --panel: #fffaf1;
  --line: #eadfce;
  --blue: #315cfe;
  --green: #138a5b;
  --orange: #d96c1f;
  --purple: #6c4fc7;
  --shadow: 0 24px 80px rgba(41, 34, 25, 0.12);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: #fff;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
a { color: var(--blue); text-decoration: none; }
code { background: #f0e8da; border-radius: 0.4rem; padding: 0.1rem 0.35rem; }

.shell { max-width: 1220px; margin: 0 auto; padding: 1.2rem; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1.5rem; }
.brand { display: inline-flex; align-items: center; gap: 0.75rem; color: var(--ink); }
.brand-mark { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 14px; background: var(--ink); color: #fff; font-weight: 800; }
.brand small, .muted, .signed-in { display: block; color: var(--muted); }
.nav-actions { display: flex; align-items: center; gap: 1rem; }
.link-button { border: 0; background: transparent; color: var(--blue); cursor: pointer; font: inherit; }
.ghost-link { color: var(--ink); border: 1px solid var(--line); border-radius: 999px; padding: 0.55rem 0.85rem; background: rgba(255,255,255,0.6); }

.messages { display: grid; gap: 0.6rem; margin-bottom: 1rem; }
.message { padding: 0.8rem 1rem; border-radius: 14px; background: #eef4ff; border: 1px solid #d8e5ff; }
.message.success { background: #e9f8f0; border-color: #bee9d2; }
.message.error, .error-text { background: #fff0ed; border-color: #ffc9bd; color: #9e2f1a; }

.login-layout { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr); gap: 1.2rem; min-height: 78vh; align-items: center; }
.hero-card, .login-card, .panel, .stat-card { background: rgba(255, 250, 241, 0.88); border: 1px solid var(--line); box-shadow: var(--shadow); border-radius: 28px; }
.hero-card { padding: clamp(2rem, 5vw, 4rem); overflow: hidden; position: relative; }
.hero-card:after { content: ""; position: absolute; right: -8rem; bottom: -8rem; width: 22rem; height: 22rem; border-radius: 999px; background: rgba(49, 92, 254, 0.12); }
.hero-card h1, .page-heading h1 { font-size: clamp(2.2rem, 5vw, 4.7rem); line-height: 0.95; letter-spacing: -0.06em; margin: 0.4rem 0 1rem; }
.hero-copy, .page-heading p { max-width: 62ch; color: var(--muted); font-size: 1.05rem; }
.eyebrow { margin: 0 0 0.4rem; color: var(--orange); font-weight: 800; text-transform: uppercase; letter-spacing: 0.14em; font-size: 0.75rem; }
.hero-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.8rem; margin-top: 2rem; position: relative; z-index: 1; }
.hero-grid div { background: #fff; border-radius: 18px; padding: 1rem; border: 1px solid var(--line); }
.hero-grid span { display: block; color: var(--muted); margin-top: 0.2rem; }
.login-card { padding: 2rem; }
.stacked-form { display: grid; gap: 0.75rem; }
.stacked-form input, .input, .textarea { width: 100%; border: 1px solid var(--line); border-radius: 14px; padding: 0.85rem 1rem; background: #fff; font: inherit; }
.textarea { resize: vertical; }
.primary-button { display: inline-flex; justify-content: center; align-items: center; border: 0; border-radius: 999px; padding: 0.8rem 1.15rem; background: var(--ink); color: #fff; font-weight: 800; cursor: pointer; box-shadow: 0 12px 30px rgba(24,35,47,0.18); }
.primary-button.subtle { background: #fff; color: var(--ink); border: 1px solid var(--line); box-shadow: none; margin-right: 0.4rem; }
.primary-button.release { background: var(--green); margin-top: 1rem; }
.demo-creds { margin-top: 1rem; padding: 1rem; border-radius: 18px; background: #f6efe3; color: var(--muted); }
.demo-creds p { margin: 0.25rem 0; }

.page-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 1rem; }
.page-heading, .wide-panel { grid-column: 1 / -1; }
.stats-grid { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(5, 1fr); gap: 1rem; }
.stat-card { padding: 1.1rem; min-height: 128px; display: flex; flex-direction: column; justify-content: space-between; }
.stat-card span { color: var(--muted); font-weight: 700; }
.stat-card strong { font-size: 2.35rem; letter-spacing: -0.05em; }
.accent-blue { border-top: 5px solid var(--blue); }
.accent-orange { border-top: 5px solid var(--orange); }
.accent-green { border-top: 5px solid var(--green); }
.accent-purple { border-top: 5px solid var(--purple); }
.accent-dark { border-top: 5px solid var(--ink); }
.panel { padding: 1.25rem; }
.panel-header { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-bottom: 1rem; }
.panel h2 { margin: 0.1rem 0 0.8rem; font-size: 1.35rem; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th { text-align: left; color: var(--muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; }
td, th { padding: 0.85rem 0.65rem; border-bottom: 1px solid var(--line); }
.status { display: inline-flex; border-radius: 999px; padding: 0.25rem 0.55rem; font-weight: 800; font-size: 0.78rem; background: #eee; }
.status-uploaded, .status-processing { background: #fff1d8; color: #875110; }
.status-marked { background: #e9f8f0; color: #106841; }
.status-needs_review { background: #fff0ed; color: #9e2f1a; }
.status-released { background: #e8edff; color: #263fac; }
.status-failed { background: #ffe2df; color: #a02014; }
.status-published { background: #e9f8f0; color: #106841; }
.status-unpublished { background: #f0e8da; color: #6b5d4a; }
.table-action { font-weight: 800; }
.table-actions { display: flex; flex-wrap: wrap; gap: 0.6rem; align-items: center; }
.inline-form { display: inline; margin: 0; }
.danger-link, .danger-button { color: #9e2f1a; }
.danger-button { background: #9e2f1a; color: #fff; }
.roster-list, .feedback-list { display: grid; gap: 0.7rem; }
.roster-row, .feedback-card { display: flex; justify-content: space-between; gap: 1rem; padding: 1rem; border-radius: 18px; background: #fff; border: 1px solid var(--line); }
.roster-row small { color: var(--muted); }
.api-panel p { color: var(--muted); }
.meta-list { display: grid; gap: 0.75rem; margin: 1rem 0; }
.meta-list div { display: flex; justify-content: space-between; gap: 1rem; border-bottom: 1px solid var(--line); padding-bottom: 0.55rem; }
.meta-list dt { color: var(--muted); font-weight: 800; }
.meta-list dd { margin: 0; }
.meta-list.compact { font-size: 0.95rem; }
.suggestion-score { font-size: 2.2rem; font-weight: 900; letter-spacing: -0.05em; }
.suggestion-score span { color: var(--muted); font-size: 1rem; }
.decision-form { display: grid; gap: 1rem; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.button-row { display: flex; gap: 0.7rem; flex-wrap: wrap; }
.decision-summary, .empty-state { margin-top: 1rem; padding: 1rem; border-radius: 18px; background: #fff; border: 1px solid var(--line); }
.checkbox-row { display: flex; align-items: center; gap: 0.65rem; font-weight: 800; }
.checkbox-row input { width: 1.15rem; height: 1.15rem; }
.code-block { white-space: pre-wrap; overflow-x: auto; border-radius: 18px; background: #18232f; color: #f8f1e7; padding: 1rem; line-height: 1.55; }
.compact-list .roster-row { align-items: flex-start; flex-direction: column; }
.compact-list small { word-break: break-all; }
.question-results { margin-top: 1.2rem; }
.question-results h3 { margin: 0 0 0.6rem; }
.detail-page { grid-template-columns: 1fr; }
.detail-page > .panel { grid-column: 1 / -1; }
.marking-sections { display: grid; gap: 1rem; }
.marking-section-card { border: 1px solid var(--line); border-radius: 22px; background: #fff; padding: 1rem; }
.section-title-row { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-bottom: 0.8rem; }
.section-title-row h4 { margin: 0; font-size: 1.05rem; }
.section-title-row a { font-weight: 800; }
.section-review-grid { display: grid; grid-template-columns: minmax(280px, 0.95fr) minmax(320px, 1.05fr); gap: 1rem; align-items: start; }
.crop-preview { overflow: hidden; border-radius: 18px; border: 1px solid var(--line); background: #f8f4ec; }
.crop-preview img { display: block; width: 100%; height: auto; }
.section-comments { display: grid; gap: 0.75rem; }
.subquestion-comment { border: 1px solid var(--line); border-radius: 18px; padding: 0.85rem; background: #fffaf1; }
.subquestion-comment p { margin: 0.65rem 0 0; color: var(--ink); line-height: 1.45; }
.subquestion-comment label { display: grid; gap: 0.35rem; color: var(--muted); font-weight: 800; }
.subquestion-meta { display: flex; align-items: center; gap: 0.55rem; flex-wrap: wrap; }
.subquestion-meta strong { font-size: 1rem; }
.subquestion-meta > span:not(.status) { color: var(--muted); font-weight: 800; }
.subquestion-edit-grid { display: grid; grid-template-columns: minmax(110px, 0.45fr) minmax(150px, 0.55fr); gap: 0.7rem; margin: 0.75rem 0; }
.compact-input { padding: 0.65rem 0.75rem; }
.compact-textarea { min-height: 5.4rem; padding: 0.7rem 0.8rem; }
.marking-edit-form { display: grid; gap: 1rem; }
.marking-edit-actions { display: flex; align-items: center; gap: 0.8rem; flex-wrap: wrap; position: sticky; bottom: 1rem; padding: 0.9rem; border: 1px solid var(--line); border-radius: 20px; background: rgba(255, 250, 241, 0.95); box-shadow: 0 16px 40px rgba(41, 34, 25, 0.12); }
.question-feedback { margin: 0.8rem 0; }
.question-feedback summary { cursor: pointer; font-weight: 800; }
.question-feedback ul { margin: 0.6rem 0 0; padding-left: 1.2rem; color: var(--muted); }
.score-pill { min-width: 110px; height: 110px; border-radius: 28px; display: grid; place-items: center; background: var(--ink); color: #fff; text-align: center; }
.score-pill strong, .score-pill span { display: block; }
.score-pill span { color: #cbd5e1; }
.insight-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin: 1rem 0; }
.insight-stat { min-height: 104px; box-shadow: none; }
.insight-stat strong { font-size: 1.8rem; }
.insight-note { padding: 1rem; border-radius: 18px; background: #fff; border: 1px solid var(--line); color: var(--muted); }
.insight-note p { margin: 0.25rem 0; }
.takeaway-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr); gap: 1rem; margin: 1rem 0; }
.takeaway-card, .spotlight-card { border: 1px solid var(--line); border-radius: 22px; background: #fff; padding: 1rem; }
.takeaway-card h3 { margin: 0 0 0.7rem; }
.takeaway-card p { color: var(--muted); line-height: 1.45; }
.takeaway-primary { background: #fffaf1; border-top: 5px solid var(--orange); }
.review-focus-row { display: grid; gap: 0.2rem; padding: 0.75rem 0; border-top: 1px solid var(--line); }
.review-focus-row:first-of-type { border-top: 0; }
.review-focus-row span, .spotlight-card span, .spotlight-card p { color: var(--muted); }
.insight-spotlight-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin: 1rem 0; }
.spotlight-card strong { display: block; margin: 0.35rem 0; font-size: 1.35rem; }
.bar-meter { min-width: 140px; height: 0.75rem; border-radius: 999px; overflow: hidden; background: #efe5d5; border: 1px solid var(--line); }
.bar-meter span { display: block; height: 100%; border-radius: inherit; background: var(--blue); }
.teaching-summary { font-size: 1.15rem; line-height: 1.55; max-width: 80ch; }
.teaching-actions { display: grid; gap: 1rem; margin: 1rem 0; }
.teaching-actions .takeaway-card { border-left: 5px solid var(--orange); }
.teaching-actions blockquote { margin: 1rem 0; padding: 0.8rem 1rem; border-left: 3px solid var(--line); background: var(--panel); }
.teaching-actions .teaching-prompt { color: var(--ink); }
.supporting-evidence > summary { font-weight: 800; font-size: 1.1rem; cursor: pointer; }
.supporting-evidence .panel { box-shadow: none; margin-top: 1rem; }
.marking-section-card { scroll-margin-top: 1rem; }

@media (max-width: 900px) {
  .login-layout, .page-grid { grid-template-columns: 1fr; }
  .section-review-grid { grid-template-columns: 1fr; }
  .subquestion-edit-grid { grid-template-columns: 1fr; }
  .stats-grid, .hero-grid, .insight-grid, .takeaway-grid, .insight-spotlight-grid { grid-template-columns: 1fr; }
  .topbar, .nav-actions, .panel-header { align-items: flex-start; flex-direction: column; }
  .form-grid { grid-template-columns: 1fr; }
}