:root {
  --bg: #0f1115; --panel: #171a21; --border: #262b36; --text: #e6e9ef;
  --muted: #8b93a7; --accent: #5b8def; --good: #3ecf8e; --bad: #ef5b5b;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); }
.topbar { display: flex; justify-content: space-between; align-items: center; padding: 14px 24px; border-bottom: 1px solid var(--border); background: var(--panel); }
.brand { color: var(--text); text-decoration: none; font-weight: 600; }
.brand-iq { color: #2563eb; }
.login-page { min-height: calc(100vh - 110px); display: flex; align-items: center; justify-content: center; padding: 24px 0; }
.login-card { width: min(100%, 420px); background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 28px; box-shadow: 0 16px 40px rgba(0,0,0,.22); }
.login-brand { text-align: center; color: var(--text); font-size: 28px; font-weight: 700; letter-spacing: -.03em; margin-bottom: 22px; }
.login-card h1 { margin: 0 0 8px; text-align: center; font-size: 24px; }
.login-card > .muted { display: block; text-align: center; line-height: 1.5; margin: 0 0 22px; }
.login-card form { margin: 0; }
.login-card button { width: 100%; margin-top: 4px; }
.login-error { color: var(--bad); margin: 14px 0 0; font-size: 13px; }
.container { max-width: 1100px; margin: 0 auto; padding: 24px; }
h1, h2, h3 { font-weight: 600; }
a { color: var(--accent); }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 18px 20px; margin-bottom: 16px; }
.ai-panel { border-color: var(--accent); background: rgba(91,141,239,0.08); }
.score { display: inline-block; background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 10px 16px; margin-bottom: 16px; }
.score b { color: var(--good); }
.dashboard-hero { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 20px; margin-bottom: 16px; border: 1px solid var(--border); border-radius: 12px; background: linear-gradient(135deg, rgba(91,141,239,.18), rgba(62,207,142,.08)); }
.dashboard-hero div { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.dashboard-hero strong { font-size: 34px; color: var(--good); }
.eyebrow { color: var(--accent); font-size: 13px; text-transform: uppercase; letter-spacing: .08em; }
.history-title { font-weight: 600; }
.pagination { display: flex; align-items: center; justify-content: center; gap: 16px; margin-top: 18px; }
.badge { display: inline-block; font-size: 12px; padding: 2px 8px; border-radius: 999px; border: 1px solid var(--border); color: var(--muted); }
.badge.pass { color: var(--good); border-color: var(--good); }
.badge.locked { color: var(--bad); border-color: var(--bad); }
.task-list { list-style: none; padding: 0; margin: 0; }
.task-list li { padding: 10px 0; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }
.task-list li:last-child { border-bottom: none; }
textarea.code { width: 100%; min-height: 320px; background: #0b0d12; color: #d7e0f0; border: 1px solid var(--border); border-radius: 8px; padding: 12px; font-family: "SFMono-Regular", Consolas, Menlo, monospace; font-size: 14px; tab-size: 4; }
.CodeMirror { min-height: 320px; border: 1px solid var(--border); border-radius: 8px; font-family: "SFMono-Regular", Consolas, Menlo, monospace; font-size: 14px; }
.CodeMirror-scroll { min-height: 320px; }
.test-results { margin: 16px 0; }
.test-result { border: 1px solid var(--border); border-radius: 8px; padding: 12px; margin-top: 8px; }
.test-pass { border-color: var(--good); }
.test-fail { border-color: var(--bad); }
.test-result-heading { display: flex; justify-content: space-between; margin-bottom: 10px; }
.test-pass .test-result-heading span { color: var(--good); }
.test-fail .test-result-heading span { color: var(--bad); }
.output-value { background: #0b0d12; padding: 8px; border-radius: 6px; white-space: pre-wrap; overflow-x: auto; font: 13px/1.45 monospace; margin: 4px 0 10px; }
button, .btn { background: var(--accent); color: white; border: none; border-radius: 8px; padding: 9px 16px; font-size: 14px; cursor: pointer; text-decoration: none; display: inline-block; }
button.secondary, .btn.secondary { background: transparent; border: 1px solid var(--border); color: var(--text); }
button.danger { background: var(--bad); }
input, textarea, select { width: 100%; padding: 8px 10px; border-radius: 6px; border: 1px solid var(--border); background: #0b0d12; color: var(--text); font-size: 14px; margin-bottom: 10px; }
label { font-size: 13px; color: var(--muted); display: block; margin-bottom: 4px; }
form.inline { display: inline; }
.result-box { padding: 14px; border-radius: 8px; margin-top: 14px; border: 1px solid var(--border); }
.result-box.pass { border-color: var(--good); background: rgba(62,207,142,0.08); }
.result-box.fail { border-color: var(--bad); background: rgba(239,91,91,0.08); }
.muted { color: var(--muted); font-size: 13px; }
.error-output { background: #0b0d12; padding: 10px; border-radius: 6px; font-family: monospace; white-space: pre-wrap; font-size: 13px; margin-top: 8px; }
.rich-editor { min-height: 180px; background: #11161f; color: var(--text); margin-bottom: 10px; border: 1px solid var(--border); }
.rich-editor .ql-toolbar.ql-snow, .rich-editor + .ql-container.ql-snow { border-color: var(--border); }
.ql-snow .ql-stroke { stroke: var(--text); }
.ql-snow .ql-fill { fill: var(--text); }
.ql-snow .ql-picker { color: var(--text); }
.ql-snow .ql-picker-options { background: var(--panel); border-color: var(--border); }
.ql-editor { min-height: 130px; color: var(--text); }
.ql-container.ql-snow { background: #11161f; border-color: var(--border); }
.ql-editor.ql-blank::before { color: var(--muted); }
.ql-snow .ql-picker-options .ql-picker-item { color: var(--text); }
.rich-content { line-height: 1.65; }
.rich-content a { color: var(--accent); }
.resource-grid { display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.resource-card { display: flex; flex-direction: column; gap: 6px; padding: 12px; border: 1px solid var(--border); border-radius: 8px; text-decoration: none; background: rgba(91,141,239,0.06); }
.resource-card span { color: var(--muted); font-size: 13px; line-height: 1.4; }
.course-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px; }
.course-card { padding: 14px; border: 1px solid var(--border); border-radius: 8px; background: rgba(91,141,239,0.05); }
.course-card h3 { margin-top: 0; }
.enrollment-form { min-width: 240px; margin: 0; }
.course-checkboxes { display: grid; gap: 4px; margin-bottom: 8px; }
.help-prompt { padding: 12px; border-left: 3px solid var(--accent); background: rgba(91,141,239,0.08); }
.help-options { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 14px; }
.help-option.selected { border-color: var(--accent); color: var(--accent); }
.help-choice { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--border); }
.ai-help-response { border-color: var(--accent); }
.audit-table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px; border-bottom: 1px solid var(--border); font-size: 14px; }
input[type="checkbox"], input[type="radio"] { width: auto; margin: 0 8px 0 0; accent-color: var(--accent); vertical-align: middle; }
label.check { display: flex; align-items: center; gap: 6px; width: fit-content; margin: 8px 0; color: var(--text); }
.staff-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 0; border-top: 1px solid var(--border); }

@media (max-width: 700px) {
  .topbar { padding: 12px 16px; align-items: flex-start; gap: 12px; }
  .topbar .btn, .topbar a.btn { padding: 7px 10px; font-size: 12px; }
  .container { padding: 16px 12px; }
  h1 { font-size: 26px; }
  h2 { font-size: 21px; }
  .dashboard-hero { align-items: flex-start; flex-direction: column; padding: 16px; }
  .dashboard-hero strong { font-size: 28px; }
  .card { padding: 14px; border-radius: 8px; }
  .task-list li { align-items: flex-start; gap: 10px; }
  .task-list li > span:last-child { display: flex; align-items: center; flex-wrap: wrap; justify-content: flex-end; gap: 6px; }
  table { display: block; overflow-x: auto; white-space: nowrap; }
  th, td { font-size: 13px; }
  .resource-grid { grid-template-columns: 1fr; }
  .help-options { flex-direction: column; }
  .help-option { width: 100%; text-align: left; }
  button, .btn { min-height: 42px; }
  .inline { margin: 4px 4px 4px 0; }
  .staff-row { align-items: flex-start; flex-direction: column; }
  .CodeMirror, .CodeMirror-scroll, textarea.code { min-height: 260px; }
  .ql-toolbar.ql-snow { display: flex; flex-wrap: wrap; }
}