/* SDC Learn — design system. Brand colours are injected from Settings → Appearance
   (--brand, --accent, --highlight, --radius); everything else derives from them. */

/* ---------- tokens ---------- */
:root {
  --brand: #0F3D6E; --accent: #0F766E; --highlight: #C9A227; --radius: 12px;
  --bg: #F5F7FA; --surface: #FFFFFF; --surface-2: #F1F4F8; --border: #E3E8EF; --border-strong: #CDD5E0;
  --text: #0E1726; --text-2: #3A4556; --muted: #667085;
  --primary: var(--brand); --primary-ink: #fff;
  --primary-soft: color-mix(in srgb, var(--brand) 9%, transparent);
  --accent-soft: color-mix(in srgb, var(--accent) 12%, transparent);
  --highlight-soft: color-mix(in srgb, var(--highlight) 16%, transparent);
  --success: #15803D; --success-soft: #E8F5EC; --warning: #B45309; --warning-soft: #FEF3E2; --danger: #C2410C; --danger-soft: #FDECE6; --info: #1D4ED8; --info-soft: #E8EEFD;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, .05); --shadow: 0 1px 3px rgba(16, 24, 40, .06), 0 8px 24px -12px rgba(16, 24, 40, .12); --shadow-lg: 0 24px 48px -16px rgba(16, 24, 40, .28);
  --r-sm: calc(var(--radius) * .66); --r-lg: calc(var(--radius) * 1.33);
  --sidebar: 256px; --topbar: 60px;
  --font: 'Plus Jakarta Sans', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #0A0F1A; --surface: #111827; --surface-2: #172033; --border: #222D41; --border-strong: #2F3B52;
  --text: #E7ECF3; --text-2: #C3CCD9; --muted: #8E9AAD;
  --primary: color-mix(in srgb, var(--brand) 55%, #9CC4F2); --primary-ink: #0A0F1A;
  --primary-soft: color-mix(in srgb, var(--primary) 16%, transparent);
  --accent-soft: color-mix(in srgb, var(--accent) 22%, transparent);
  --highlight-soft: color-mix(in srgb, var(--highlight) 20%, transparent);
  --success: #4ADE80; --success-soft: rgba(74, 222, 128, .12); --warning: #FBBF24; --warning-soft: rgba(251, 191, 36, .12); --danger: #FB923C; --danger-soft: rgba(251, 146, 60, .13); --info: #93B4FD; --info-soft: rgba(147, 180, 253, .13);
  --shadow-sm: none; --shadow: 0 0 0 1px var(--border); --shadow-lg: 0 24px 48px -12px rgba(0, 0, 0, .6);
  color-scheme: dark;
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--font); font-size: 14.5px; line-height: 1.55; color: var(--text); background: var(--bg); -webkit-font-smoothing: antialiased; }
h1, h2, h3, h4 { margin: 0; line-height: 1.25; letter-spacing: -.015em; color: var(--text); }
h1 { font-size: 1.6rem; font-weight: 800; } h2 { font-size: 1.2rem; font-weight: 700; } h3 { font-size: 1rem; font-weight: 700; }
p { margin: 0 0 .6em; } p:last-child { margin-bottom: 0; }
a { color: var(--primary); text-decoration: none; } a:hover { text-decoration: underline; }
img { max-width: 100%; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .88em; background: var(--surface-2); padding: .1em .4em; border-radius: 6px; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 6px; }
::selection { background: var(--primary-soft); }
.ic { flex: none; display: inline-block; vertical-align: middle; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link { position: absolute; left: -999px; top: 8px; z-index: 100; background: var(--surface); padding: 8px 12px; border-radius: 8px; }
.skip-link:focus { left: 8px; }
[hidden] { display: none !important; }

/* utilities */
.muted { color: var(--muted); } .small { font-size: .85em; } .strong { font-weight: 600; } .block { display: block; } .center { text-align: center; }
.grow { flex: 1 1 auto; min-width: 0; } .truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; display: block; max-width: 100%; }
.clamp-2 { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.row { display: flex; align-items: center; } .row.wrap { flex-wrap: wrap; } .gap { gap: 12px; } .gap-sm { gap: 8px; } .gap-xs { gap: 4px; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.stack { display: grid; gap: 16px; align-content: start; min-width: 0; } .stack-sm { display: grid; gap: 8px; }
.mt { margin-top: 16px; } .mb { margin-bottom: 14px; } .pad { padding: 12px 14px; } .span-all { grid-column: 1 / -1; }
.text-warning { color: var(--warning); } .text-danger { color: var(--danger); }
.plain { list-style: none; margin: 0; padding: 0; } .plain li { display: flex; gap: 6px; align-items: center; }
.w-80 { width: 80px; }
.section-title { font-size: 1.05rem; }
.eyebrow { display: inline-flex; gap: 8px; align-items: center; font-size: .78rem; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 6px; }

/* ---------- buttons ---------- */
.btn { --b: transparent; display: inline-flex; align-items: center; justify-content: center; gap: 7px; height: 38px; padding: 0 15px; border-radius: var(--r-sm); border: 1px solid var(--b); background: transparent; color: var(--text); font: 600 .9rem/1 var(--font); cursor: pointer; white-space: nowrap; text-decoration: none !important; transition: background .15s, border-color .15s, color .15s, box-shadow .15s, transform .05s; }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }
.btn-primary { background: var(--primary); color: var(--primary-ink); }
.btn-primary:hover:not(:disabled) { background: color-mix(in srgb, var(--primary) 88%, #000); }
.btn-secondary { background: var(--surface); --b: var(--border-strong); }
.btn-secondary:hover:not(:disabled) { background: var(--surface-2); }
.btn-ghost { color: var(--text-2); }
.btn-ghost:hover:not(:disabled) { background: var(--surface-2); color: var(--text); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover:not(:disabled) { background: color-mix(in srgb, var(--danger) 85%, #000); }
.btn-sm { height: 32px; padding: 0 11px; font-size: .84rem; border-radius: calc(var(--r-sm) * .85); }
.btn-lg { height: 46px; padding: 0 20px; font-size: .95rem; }
.btn-block { width: 100%; }
.icon-btn { display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: var(--r-sm); border: 0; background: transparent; color: var(--text-2); cursor: pointer; position: relative; text-decoration: none !important; transition: background .15s, color .15s; }
.icon-btn:hover:not(:disabled) { background: var(--surface-2); color: var(--text); }
.icon-btn:disabled { opacity: .35; cursor: default; }
.icon-btn-sm { width: 30px; height: 30px; }
.icon-btn.danger:hover { color: var(--danger); background: var(--danger-soft); }
.link-btn { background: none; border: 0; padding: 0; color: var(--primary); font: inherit; font-weight: 600; cursor: pointer; }
.file-btn { cursor: pointer; }
.spinner { width: 16px; height: 16px; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; display: inline-block; animation: spin .7s linear infinite; vertical-align: -3px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- badges, pills, chips ---------- */
.badge { --c: var(--muted); --bgc: var(--surface-2); display: inline-flex; align-items: center; height: 22px; padding: 0 9px; border-radius: 999px; font-size: .74rem; font-weight: 600; color: var(--c); background: var(--bgc); white-space: nowrap; letter-spacing: .01em; }
.badge-success { --c: var(--success); --bgc: var(--success-soft); }
.badge-info { --c: var(--info); --bgc: var(--info-soft); }
.badge-warning { --c: var(--warning); --bgc: var(--warning-soft); }
.badge-danger { --c: var(--danger); --bgc: var(--danger-soft); }
.badge-accent { --c: var(--accent); --bgc: var(--accent-soft); }
.badge-highlight { --c: color-mix(in srgb, var(--highlight) 75%, var(--text)); --bgc: var(--highlight-soft); }
:root[data-theme="dark"] .badge-accent { --c: color-mix(in srgb, var(--accent) 60%, #fff); }
.pill { display: inline-block; padding: 1px 8px; border-radius: 6px; background: var(--surface-2); font-size: .76rem; font-weight: 600; color: var(--text-2); margin: 1px 0; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip { height: 32px; padding: 0 13px; border-radius: 999px; border: 1px solid var(--border); background: var(--surface); color: var(--text-2); font: 600 .82rem var(--font); cursor: pointer; transition: all .15s; }
.chip:hover { border-color: var(--border-strong); color: var(--text); }
.chip.active { background: var(--text); color: var(--surface); border-color: var(--text); }

/* ---------- shell ---------- */
.boot { min-height: 100vh; display: grid; place-items: center; color: var(--muted); }
.shell { display: grid; grid-template-columns: var(--sidebar) minmax(0, 1fr); min-height: 100vh; }
.sidebar { position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; background: var(--surface); border-right: 1px solid var(--border); z-index: 40; }
.brand { display: flex; align-items: center; gap: 11px; height: var(--topbar); padding: 0 14px; border-bottom: 1px solid var(--border); flex: none; }
.brand-toggle { display: grid; place-items: center; padding: 0; border: 0; background: none; border-radius: 10px; cursor: pointer; flex: none; transition: transform .15s, box-shadow .15s; }
.brand-toggle:hover { transform: scale(1.06); box-shadow: 0 0 0 3px var(--brand-soft, var(--surface-2)); }
.brand-name { min-width: 0; color: var(--text); text-decoration: none !important; }
.brand-logo { width: 36px; height: 36px; border-radius: 10px; object-fit: contain; flex: none; }
.brand b { display: block; font-size: 1rem; font-weight: 800; letter-spacing: -.01em; }
.brand small { display: block; font-size: .74rem; color: var(--muted); font-weight: 500; }
.nav { flex: 1; overflow-y: auto; padding: 6px 12px 16px; scrollbar-width: thin; }
.nav-group { margin-top: 10px; }
.nav-label { display: flex; align-items: center; justify-content: space-between; width: 100%; border: 0; background: none; cursor: pointer; font: 700 .7rem var(--font); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); padding: 8px 10px 4px; border-radius: 6px; }
.nav-label:hover { color: var(--text); }
.nav-label .ic { transition: transform .2s; }
.nav-group.collapsed .nav-label .ic { transform: rotate(-90deg); }
.nav-group.collapsed .nav-items { display: none; }
@media (min-width: 1025px) {
  .shell { transition: grid-template-columns .22s ease; }
  .shell.nav-mini { grid-template-columns: 76px minmax(0, 1fr); }
  .nav-mini .brand { justify-content: center; padding: 0; }
  .topbar [data-menu] { display: none; }
  .nav-mini :is(.brand-name, .nav a > span:not(.nav-count), .nav-label, .me > div) { display: none; }
  .nav-mini .nav { padding: 6px 10px 16px; }
  .nav-mini .nav-group { margin-top: 6px; padding-top: 6px; border-top: 1px solid var(--border); }
  .nav-mini .nav-group:first-child { border-top: 0; }
  .nav-mini .nav-group.collapsed .nav-items { display: block; }
  .nav-mini .nav a { justify-content: center; padding: 0; position: relative; }
  .nav-mini .nav-count { position: absolute; top: 3px; right: 6px; min-width: 16px; height: 16px; font-size: .6rem; padding: 0 4px; }
  .nav-mini .sidebar-foot { flex-direction: column; padding: 12px 8px; }
  .nav-mini .me { flex: none; }
}
.nav a { display: flex; align-items: center; gap: 11px; padding: 0 10px; height: 38px; border-radius: var(--r-sm); color: var(--text-2); font-weight: 500; font-size: .9rem; text-decoration: none !important; transition: background .12s, color .12s; }
.nav a .ic { color: var(--muted); }
.nav a:hover { background: var(--surface-2); color: var(--text); }
.nav a.active { background: var(--primary-soft); color: var(--primary); font-weight: 650; }
.nav a.active .ic { color: var(--primary); }
.nav-count { margin-left: auto; min-width: 20px; height: 20px; padding: 0 6px; border-radius: 999px; background: var(--primary); color: var(--primary-ink); font-size: .7rem; font-weight: 700; display: grid; place-items: center; }
.sidebar-foot { display: flex; align-items: center; gap: 8px; padding: 12px 14px; border-top: 1px solid var(--border); }
.me { display: flex; align-items: center; gap: 10px; flex: 1; min-width: 0; }
.me b { display: block; font-size: .86rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.me small { display: block; font-size: .75rem; color: var(--muted); }
.avatar { display: inline-grid; place-items: center; border-radius: 50%; background: var(--primary-soft); color: var(--primary); font-weight: 700; flex: none; object-fit: cover; }
.main { display: flex; flex-direction: column; min-width: 0; }
.topbar { position: sticky; top: 0; z-index: 30; height: var(--topbar); display: flex; align-items: center; gap: 10px; padding: 0 24px; background: color-mix(in srgb, var(--bg) 82%, transparent); backdrop-filter: saturate(1.4) blur(10px); border-bottom: 1px solid var(--border); }
.crumbs { display: flex; align-items: center; gap: 6px; min-width: 0; flex: 1; font-size: .87rem; color: var(--muted); }
.crumbs a { color: var(--muted); white-space: nowrap; } .crumbs a:hover { color: var(--text); }
.crumbs span[aria-current] { color: var(--text); font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.crumbs .ic { opacity: .6; }
.top-actions { display: flex; align-items: center; gap: 4px; }
.course-tools { display: flex; gap: 4px; margin-right: 6px; }
.user-chip { display: flex; align-items: center; gap: 8px; height: 38px; padding: 0 8px 0 4px; border-radius: 999px; border: 1px solid var(--border); background: var(--surface); color: var(--text); font: 600 .86rem var(--font); cursor: pointer; }
.user-chip:hover { border-color: var(--border-strong); }
.dot-count { position: absolute; top: -2px; right: -4px; min-width: 18px; height: 18px; border-radius: 999px; background: var(--danger); color: #fff; font-size: .64rem; font-weight: 700; display: grid; place-items: center; padding: 0 4px; border: 2px solid var(--bg); }
.content { flex: 1; width: 100%; max-width: 1320px; margin: 0 auto; padding: 28px 28px 40px; outline: none; }
.fade-in { animation: fadeIn .22s ease-out; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }
.app-foot { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; padding: 16px 28px; border-top: 1px solid var(--border); color: var(--muted); font-size: .78rem; }
.app-foot a { color: var(--muted); } .app-foot a:hover { color: var(--text); }
.scrim { display: none; }
.only-mobile { display: none !important; }

/* popovers */
.pop-wrap { position: relative; }
.popover { position: absolute; right: 0; top: calc(100% + 8px); width: 300px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); box-shadow: var(--shadow-lg); z-index: 60; overflow: hidden; animation: pop .14s ease-out; }
@keyframes pop { from { opacity: 0; transform: translateY(-4px) scale(.98); } }
.popover-notes { width: 360px; } .popover-panel { width: 320px; }
.pop-head { padding: 14px 16px 10px; border-bottom: 1px solid var(--border); }
.pop-head b { display: block; } .pop-head small { display: block; color: var(--muted); font-size: .8rem; }
.popover-menu a, .popover-menu button { display: flex; align-items: center; gap: 10px; width: 100%; padding: 10px 16px; border: 0; background: none; color: var(--text); font: 500 .88rem var(--font); cursor: pointer; text-decoration: none !important; text-align: left; }
.popover-menu a:hover, .popover-menu button:hover { background: var(--surface-2); }
.popover-menu button { border-top: 1px solid var(--border); }
.pop-foot { display: block; text-align: center; padding: 10px; border-top: 1px solid var(--border); font-weight: 600; font-size: .85rem; }
.note-list { max-height: 360px; overflow-y: auto; }
.note { display: flex; gap: 10px; width: 100%; text-align: left; padding: 11px 16px; border: 0; background: none; color: var(--text); font: inherit; cursor: pointer; border-bottom: 1px solid var(--border); }
.note:hover { background: var(--surface-2); }
.note b { display: block; font-size: .86rem; } .note small { display: block; font-size: .8rem; color: var(--text-2); }
.note-dot { width: 8px; height: 8px; border-radius: 50%; background: transparent; margin-top: 6px; flex: none; }
.unread .note-dot { background: var(--primary); }
.copy-row { display: grid; grid-template-columns: 72px 1fr auto; align-items: center; gap: 8px; background: var(--surface-2); border-radius: var(--r-sm); padding: 4px 4px 4px 10px; }
.copy-row code { background: none; padding: 0; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mini-link { display: inline-flex; align-items: center; gap: 6px; font-size: .84rem; font-weight: 600; }

/* ---------- page scaffolding ---------- */
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 22px; }
.page-head p { color: var(--muted); margin: 4px 0 0; max-width: 720px; }
.page-actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.toolbar { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin-bottom: 18px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); padding: 20px; box-shadow: var(--shadow-sm); min-width: 0; }
.card > h3:first-child, .card > form > h3:first-child { margin-bottom: 12px; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 12px; }
.card-sub { padding: 0 0 8px; } .card-sub b { display: block; } .card-sub small { color: var(--muted); font-size: .82rem; }
.card-highlight { background: linear-gradient(135deg, var(--highlight-soft), transparent 70%), var(--surface); border-color: color-mix(in srgb, var(--highlight) 35%, var(--border)); }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-bottom: 16px; }
.layout-aside { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 20px; align-items: start; }
.layout-aside.reverse { grid-template-columns: 320px minmax(0, 1fr); }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; margin-bottom: 20px; }
.stats-2 { grid-template-columns: 1fr 1fr; margin: 0; }
.stat { display: flex; gap: 14px; align-items: center; min-height: 84px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); padding: 16px 18px; color: var(--text); text-decoration: none !important; transition: border-color .15s, transform .15s; }
a.stat:hover { border-color: var(--border-strong); transform: translateY(-1px); }
.stat-icon { width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; background: var(--primary-soft); color: var(--primary); flex: none; }
.stat-label { display: block; font-size: .8rem; color: var(--muted); font-weight: 500; }
.stat-value { display: block; font-size: 1.35rem; font-weight: 800; letter-spacing: -.02em; line-height: 1.25; }
.stat-hint { display: block; font-size: .76rem; color: var(--muted); margin-top: 2px; }
.empty { text-align: center; padding: 36px 16px; color: var(--muted); }
.empty-icon { width: 48px; height: 48px; margin: 0 auto 12px; border-radius: 14px; display: grid; place-items: center; background: var(--surface-2); color: var(--muted); }
.empty h3 { color: var(--text); margin-bottom: 4px; }
.empty p { max-width: 380px; margin: 0 auto 14px; font-size: .9rem; }
.progress { height: 6px; background: var(--surface-2); border-radius: 999px; overflow: hidden; flex: 1; min-width: 60px; }
.progress span { display: block; height: 100%; background: var(--c, var(--accent)); border-radius: inherit; transition: width .4s; }
.inline-progress { display: flex; align-items: center; gap: 8px; min-width: 110px; }

/* ---------- forms ---------- */
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 16px; }
.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field.full { grid-column: 1 / -1; }
.label { font-size: .82rem; font-weight: 600; color: var(--text-2); }
.req { color: var(--danger); }
.help { margin: 0; font-size: .78rem; color: var(--muted); }
.input { width: 100%; height: 40px; padding: 0 12px; border: 1px solid var(--border-strong); border-radius: var(--r-sm); background: var(--surface); color: var(--text); font: 500 .9rem var(--font); transition: border-color .15s, box-shadow .15s; }
textarea.input { height: auto; padding: 10px 12px; resize: vertical; line-height: 1.5; }
select.input { appearance: none; padding-right: 34px; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%23667085' stroke-width='2' viewBox='0 0 24 24'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 10px center; }
.input:hover { border-color: color-mix(in srgb, var(--border-strong) 60%, var(--text)); }
.input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.input::placeholder { color: color-mix(in srgb, var(--muted) 80%, transparent); }
.input[readonly] { background: var(--surface-2); }
.input-sm { height: 32px; font-size: .84rem; padding: 0 10px; }
select.input-sm { padding-right: 30px; }
.input-lg { height: 46px; font-size: .95rem; }
.input-wrap { position: relative; } .input-wrap .input { padding-right: 44px; }
.input-addon { position: absolute; right: 6px; top: 50%; transform: translateY(-50%); }
.check { display: inline-flex; gap: 9px; align-items: flex-start; cursor: pointer; font-size: .88rem; line-height: 1.4; }
.check input { width: 16px; height: 16px; margin: 2px 0 0; accent-color: var(--primary); flex: none; }
.check-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 8px 14px; padding: 12px; border: 1px solid var(--border); border-radius: var(--r-sm); max-height: 220px; overflow-y: auto; }
.switch { display: inline-flex; align-items: center; gap: 10px; cursor: pointer; font-size: .88rem; }
.switch input { position: absolute; opacity: 0; width: 0; height: 0; }
.switch-track { width: 38px; height: 22px; border-radius: 999px; background: var(--border-strong); position: relative; flex: none; transition: background .15s; }
.switch-track::after { content: ''; position: absolute; top: 3px; left: 3px; width: 16px; height: 16px; border-radius: 50%; background: #fff; box-shadow: 0 1px 2px rgba(0,0,0,.2); transition: transform .15s; }
.switch input:checked + .switch-track { background: var(--primary); }
.switch input:checked + .switch-track::after { transform: translateX(16px); }
.switch input:focus-visible + .switch-track { outline: 2px solid var(--primary); outline-offset: 2px; }
.color-field { display: flex; align-items: center; gap: 10px; }
.color-swatch { width: 44px; height: 40px; padding: 3px; border: 1px solid var(--border-strong); border-radius: var(--r-sm); background: var(--surface); cursor: pointer; }
.form-foot { display: flex; justify-content: flex-end; gap: 8px; margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--border); }
.alert { padding: 11px 14px; border-radius: var(--r-sm); font-size: .88rem; margin-bottom: 14px; }
.alert-danger { background: var(--danger-soft); color: var(--danger); }
.alert-warning { background: var(--warning-soft); color: var(--warning); }
.tc-codechecks ul { margin: 6px 0 8px 18px; padding: 0; }
.tc-codechecks li { margin: 3px 0; }
.note-box { padding: 12px 14px; border-radius: var(--r-sm); background: var(--surface-2); border: 1px solid var(--border); }
.note-box.warning { background: var(--warning-soft); border-color: transparent; }
.note-box.danger { background: var(--danger-soft); border-color: transparent; }
.sub-section { margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--border); display: grid; gap: 10px; }
.search-box { display: flex; align-items: center; gap: 8px; height: 40px; padding: 0 12px; border: 1px solid var(--border); border-radius: var(--r-sm); background: var(--surface); color: var(--muted); min-width: 200px; transition: border-color .15s, box-shadow .15s; }
.search-box:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.search-box input { border: 0; outline: none; background: none; color: var(--text); font: 500 .9rem var(--font); width: 100%; height: 100%; }
.search-sm { height: 34px; min-width: 180px; }

/* ---------- tables ---------- */
.table-tools { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 14px; }
.table-tools .search-box { flex: 1 1 220px; max-width: 360px; }
.table-tools select { width: auto; min-width: 150px; }
.table-count { margin-left: auto; }
.table-wrap { overflow-x: auto; margin: 0 -20px; padding: 0 20px; }
.table { width: 100%; border-collapse: collapse; font-size: .88rem; }
.table th { text-align: left; font-size: .74rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); padding: 10px 12px; border-bottom: 1px solid var(--border); white-space: nowrap; user-select: none; }
.table th[data-sort] { cursor: pointer; }
.table th[data-sort]:hover { color: var(--text); }
.sort-ind { display: inline-block; width: 10px; margin-left: 4px; }
.table th[data-dir="asc"] .sort-ind::after { content: '↑'; } .table th[data-dir="desc"] .sort-ind::after { content: '↓'; }
.table td { padding: 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.table tbody tr:last-child td { border-bottom: 0; }
.table tbody tr:not(.tr-empty):hover td { background: color-mix(in srgb, var(--surface-2) 55%, transparent); }
.ta-r { text-align: right !important; }
.ta-c { text-align: center !important; }
.perm-table td, .perm-table th { padding: 8px 10px; }
.perm-table input[type=checkbox] { width: 16px; height: 16px; accent-color: var(--primary); }
.td-actions { white-space: nowrap; } .td-actions > * { margin-left: 2px; }
.person { display: flex; align-items: center; gap: 10px; min-width: 0; }
.person b { font-weight: 650; }
.file-link { display: inline-flex; align-items: center; gap: 6px; max-width: 220px; font-weight: 600; }
.pagination { display: flex; align-items: center; justify-content: space-between; gap: 8px; flex-wrap: wrap; margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--border); }
.table tr[hidden] { display: none !important; }
.filter-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px 16px; align-items: end; }
.filter-row .field { margin: 0; }
.pagination:empty { display: none; }

/* ---------- modal & toast ---------- */
.modal-backdrop { position: fixed; inset: 0; z-index: 90; background: rgba(10, 15, 26, .5); backdrop-filter: blur(2px); display: grid; place-items: center; padding: 20px; animation: fadeBg .15s ease-out; }
.modal-backdrop.out { opacity: 0; transition: opacity .15s; }
@keyframes fadeBg { from { opacity: 0; } }
.modal { width: 100%; max-height: calc(100vh - 40px); display: flex; flex-direction: column; background: var(--surface); border-radius: var(--r-lg); box-shadow: var(--shadow-lg); outline: none; animation: modalIn .18s ease-out; border: 1px solid var(--border); }
@keyframes modalIn { from { opacity: 0; transform: translateY(10px) scale(.98); } }
.modal-sm { max-width: 420px; } .modal-md { max-width: 560px; } .modal-lg { max-width: 760px; } .modal-xl { max-width: 1040px; }
.modal-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 16px 20px; border-bottom: 1px solid var(--border); }
.modal-head h2 { font-size: 1.08rem; }
.modal-body { padding: 20px; overflow-y: auto; }
.modal-foot { display: flex; justify-content: flex-end; gap: 8px; padding: 14px 20px; border-top: 1px solid var(--border); }
.confirm-text { color: var(--text-2); white-space: pre-line; }
.toast-stack { position: fixed; bottom: 20px; right: 20px; z-index: 100; display: grid; gap: 8px; max-width: min(380px, calc(100vw - 40px)); }
.toast { display: flex; align-items: flex-start; gap: 10px; padding: 12px 14px; background: var(--text); color: var(--surface); border-radius: var(--r-sm); box-shadow: var(--shadow-lg); font-size: .88rem; font-weight: 500; animation: toastIn .2s ease-out; }
.toast .ic { margin-top: 1px; }
.toast-success .ic { color: #4ADE80; } .toast-error .ic { color: #FB923C; } .toast-warning .ic { color: #FBBF24; }
:root[data-theme="dark"] .toast-success .ic { color: var(--success); }
.toast.out { opacity: 0; transform: translateY(6px); transition: all .25s; }
@keyframes toastIn { from { opacity: 0; transform: translateY(8px); } }

/* ---------- dropzone ---------- */
.dropzone { display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 30px 20px; border: 1.5px dashed var(--border-strong); border-radius: var(--r-lg); background: var(--surface-2); cursor: pointer; text-align: center; transition: all .15s; }
.dropzone:hover, .dropzone.drag { border-color: var(--primary); background: var(--primary-soft); }
.dropzone.has-file { border-style: solid; border-color: var(--accent); background: var(--accent-soft); }
.dz-icon { width: 46px; height: 46px; border-radius: 50%; display: grid; place-items: center; background: var(--surface); color: var(--primary); box-shadow: var(--shadow-sm); }
.dz-title { font-weight: 700; } .dz-sub { font-size: .8rem; color: var(--muted); }
.dz-file { display: inline-flex; align-items: center; gap: 6px; margin-top: 8px; padding: 6px 12px; background: var(--surface); border-radius: 999px; font-size: .85rem; max-width: 100%; }
.dz-file b { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- learner: course cards ---------- */
.up-next { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 12px; margin-bottom: 22px; }
.up-card { display: flex; align-items: center; gap: 14px; padding: 14px 16px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); color: var(--text); text-decoration: none !important; transition: border-color .15s, transform .15s; }
.up-card:hover { border-color: var(--border-strong); transform: translateY(-1px); }
.up-card > div { flex: 1; min-width: 0; } .up-card small { display: block; color: var(--muted); font-size: .76rem; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
.up-card b { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.up-icon { width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; background: var(--primary-soft); color: var(--primary); flex: none; }
.up-icon.live { background: var(--accent-soft); color: var(--accent); position: relative; }
.up-icon.live::after { content: ''; position: absolute; top: -2px; right: -2px; width: 10px; height: 10px; border-radius: 50%; background: #EF4444; border: 2px solid var(--surface); animation: pulse 1.6s infinite; }
.up-icon.warn { background: var(--warning-soft); color: var(--warning); }
@keyframes pulse { 50% { transform: scale(1.25); opacity: .7; } }
.course-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); grid-auto-rows: 1fr; align-items: stretch; gap: 16px; }
.course-card { --c: var(--brand); position: relative; display: flex; flex-direction: column; gap: 10px; padding: 20px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); color: var(--text); text-decoration: none !important; overflow: hidden; transition: border-color .15s, box-shadow .2s, transform .2s; }
.course-card::before { content: ''; position: absolute; inset: 0 0 auto; height: 3px; background: var(--c); }
a.course-card:hover, .course-card.manage:hover { border-color: color-mix(in srgb, var(--c) 40%, var(--border)); box-shadow: var(--shadow); transform: translateY(-2px); }
.cc-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; }
.cc-icon { width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; color: var(--c); background: color-mix(in srgb, var(--c) 12%, transparent); }
:root[data-theme="dark"] .cc-icon { color: color-mix(in srgb, var(--c) 60%, #fff); }
.cc-tags { display: flex; gap: 4px; flex-wrap: wrap; justify-content: flex-end; }
.course-card h3 { font-size: 1.03rem; line-height: 1.35; }
.course-card h3 a { color: inherit; }
.cc-tagline { color: var(--muted); font-size: .87rem; margin: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.cc-meta { display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: .8rem; color: var(--text-2); }
.cc-meta span { display: inline-flex; align-items: center; gap: 5px; }
.cc-progress { display: flex; align-items: center; gap: 10px; margin-top: auto; padding-top: 4px; }
.cc-progress .progress span { background: var(--c); }
.cc-foot { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; color: var(--muted); padding-top: 10px; border-top: 1px solid var(--border); }
.course-card.manage .cc-foot { margin-top: auto; }
.cc-actions { display: flex; gap: 6px; align-items: center; margin-top: 4px; }
.cc-actions .icon-btn { margin-left: auto; }

/* course hero */
.course-hero { --c: var(--brand); position: relative; display: flex; gap: 24px; align-items: center; justify-content: space-between; padding: 26px 28px; margin-bottom: 24px; border-radius: var(--r-lg); background: linear-gradient(120deg, color-mix(in srgb, var(--c) 10%, var(--surface)), var(--surface) 65%); border: 1px solid var(--border); overflow: hidden; }
.course-hero::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background: var(--c); }
.hero-main { min-width: 0; }
.hero-tags { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; margin-bottom: 10px; }
.code { font-size: .76rem; font-weight: 700; color: var(--muted); letter-spacing: .05em; margin-right: 4px; }
.course-hero h1 { font-size: clamp(1.35rem, 2.6vw, 1.9rem); max-width: 820px; }
.lead { font-size: 1.02rem; color: var(--text-2); margin: 8px 0 14px; max-width: 760px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 8px 18px; font-size: .85rem; color: var(--text-2); align-items: center; }
.hero-meta span { display: inline-flex; align-items: center; gap: 6px; }
.hero-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 18px; }
.hero-progress { display: grid; justify-items: center; gap: 8px; text-align: center; flex: none; }
.hero-progress small { color: var(--muted); max-width: 130px; }
.ring { --p: 0; width: 96px; height: 96px; border-radius: 50%; display: grid; place-items: center; background: conic-gradient(var(--c) calc(var(--p) * 1%), var(--surface-2) 0); position: relative; }
.ring::before { content: ''; position: absolute; inset: 8px; border-radius: 50%; background: var(--surface); }
.ring span { position: relative; font-weight: 800; font-size: 1.2rem; }

/* session list */
.session-list { display: grid; gap: 8px; }
.module-head { font-size: .74rem; font-weight: 700; text-transform: uppercase; letter-spacing: .07em; color: var(--muted); padding: 12px 4px 2px; }
.session-row { display: flex; align-items: center; gap: 14px; padding: 14px 16px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); color: var(--text); text-decoration: none !important; transition: border-color .15s, background .15s; min-width: 0; }
a.session-row:hover { border-color: var(--border-strong); background: color-mix(in srgb, var(--surface-2) 40%, var(--surface)); }
.session-row.pinned { background: var(--surface-2); border-style: dashed; }
.session-row.is-today { border-color: color-mix(in srgb, var(--accent) 50%, var(--border)); box-shadow: 0 0 0 3px var(--accent-soft); }
.session-row.locked { opacity: .62; }
.session-row.muted-row, .pick-list .muted-row { opacity: .6; }
.s-num { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; background: var(--surface-2); color: var(--text-2); font-weight: 700; font-size: .85rem; flex: none; }
.pinned .s-num { background: var(--surface); color: var(--primary); }
.s-num.done { background: var(--success-soft); color: var(--success); }
.s-body { flex: 1; min-width: 0; display: grid; gap: 2px; }
.s-body b { font-weight: 650; }
.s-body small { color: var(--muted); font-size: .84rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.s-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 4px; font-size: .78rem; color: var(--muted); }
.builder .session-row { padding: 10px 12px; }

/* session page */
.session-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 20px; flex-wrap: wrap; }
.session-head h1 { margin-bottom: 10px; }
.video-frame { position: relative; aspect-ratio: 16 / 9; border-radius: var(--r-lg); overflow: hidden; background: #0B1220; box-shadow: var(--shadow); }
.video-frame iframe, .video-frame video { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; background: #000; }
.video-empty { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; text-align: center; padding: 24px; color: #CBD5E1; background: radial-gradient(circle at 30% 20%, color-mix(in srgb, var(--brand) 55%, #0B1220), #0B1220 70%); }
.video-empty b { color: #fff; font-size: 1.05rem; } .video-empty span { font-size: .88rem; max-width: 420px; }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.pager-link { display: flex; align-items: center; gap: 12px; padding: 14px 16px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); color: var(--text); text-decoration: none !important; min-width: 0; transition: border-color .15s; }
.pager-link:hover { border-color: var(--border-strong); }
.pager-link span { min-width: 0; } .pager-link small { display: block; color: var(--muted); font-size: .76rem; }
.pager-link b { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: .9rem; }
.pager-link.next { justify-content: flex-end; text-align: right; }
.resource-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.resource-list li { display: flex; align-items: center; gap: 12px; padding: 8px 8px 8px 10px; border-radius: var(--r-sm); background: var(--surface-2); min-width: 0; }
.resource-list b { display: block; font-size: .87rem; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.resource-list small { font-size: .75rem; }
.res-icon { width: 32px; height: 32px; border-radius: 8px; display: grid; place-items: center; background: var(--surface); color: var(--primary); flex: none; }
.layout-aside aside .resource-list .hide-sm { display: none; }
.res-add { display: grid; grid-template-columns: 1fr 1.3fr auto auto; gap: 8px; }
.mini-list { list-style: none; margin: 0 0 8px; padding: 0; display: grid; }
.mini-list li { display: flex; align-items: center; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--border); min-width: 0; }
.mini-list li:last-child { border-bottom: 0; }
.mini-list b { font-weight: 600; font-size: .88rem; }
.ann-mini { padding: 10px 0; border-bottom: 1px solid var(--border); } .ann-mini:last-child { border-bottom: 0; padding-bottom: 0; }
.person-card { display: flex; gap: 14px; align-items: flex-start; }
.person-card b { display: block; } .person-card small { display: block; }
.date-chip { width: 44px; text-align: center; border-radius: 10px; background: var(--surface-2); padding: 4px 0; flex: none; line-height: 1.15; }
.date-chip b { display: block; font-size: 1.05rem; } .date-chip small { font-size: .7rem; color: var(--muted); text-transform: uppercase; }
.date-chip.today { background: var(--accent-soft); color: var(--accent); }

/* outline */
.check-grid { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 20px; }
.check-grid li { display: flex; gap: 10px; align-items: flex-start; font-size: .9rem; }
.check-grid .ic { color: var(--accent); margin-top: 2px; }
.roadmap { list-style: none; padding: 0; margin: 0; position: relative; }
.road-module { display: flex; gap: 16px; padding-bottom: 22px; position: relative; }
.road-module:not(:last-child)::before { content: ''; position: absolute; left: 15px; top: 34px; bottom: 0; width: 2px; background: var(--border); }
.road-module > div { flex: 1; min-width: 0; }
.road-dot { width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; background: var(--primary); color: var(--primary-ink); font-weight: 700; font-size: .85rem; flex: none; position: relative; }
.road-sessions { list-style: none; padding: 0; margin: 10px 0 0; display: grid; gap: 6px; }
.road-sessions li { display: flex; align-items: center; gap: 10px; padding: 8px 12px; background: var(--surface-2); border-radius: var(--r-sm); }
.road-sessions a { flex: 1; display: flex; justify-content: space-between; gap: 10px; color: var(--text); font-size: .87rem; min-width: 0; }
.road-sessions a span:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.facts { margin: 0; display: grid; gap: 10px; }
.facts > div { display: grid; grid-template-columns: 120px 1fr; gap: 10px; font-size: .88rem; }
.facts dt { color: var(--muted); } .facts dd { margin: 0; font-weight: 600; min-width: 0; overflow-wrap: anywhere; }
.facts.cols-2 { grid-template-columns: 1fr 1fr; } .facts.cols-2 > div, .facts.cols-3 > div { grid-template-columns: 1fr; gap: 2px; }
.facts.cols-3 { grid-template-columns: repeat(3, 1fr); margin-top: 10px; }

/* submission */
.grade-box { display: flex; gap: 12px; align-items: center; padding: 12px; margin: 12px 0 8px; border-radius: var(--r-sm); background: var(--success-soft); }
.grade-box b { font-size: 1.3rem; color: var(--success); white-space: nowrap; } .grade-box span { font-size: .85rem; }
.success-card { text-align: center; max-width: 620px; margin: 0 auto; padding: 36px 28px; display: grid; gap: 16px; justify-items: center; }
.success-card .facts { width: 100%; text-align: left; }
.success-icon { width: 60px; height: 60px; border-radius: 50%; display: grid; place-items: center; background: var(--success-soft); color: var(--success); }
details summary { cursor: pointer; color: var(--muted); margin-top: 8px; }
.stars { display: flex; gap: 4px; margin: 6px 0 14px; }
.star { border: 0; background: none; color: var(--border-strong); cursor: pointer; padding: 2px; }
.star.on { color: var(--highlight); } .star.on svg { fill: currentColor; }
.stars-static { color: var(--highlight); letter-spacing: 1px; }

/* tabs */
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border); margin-bottom: 20px; overflow-x: auto; scrollbar-width: none; }
.tab { display: inline-flex; align-items: center; gap: 7px; padding: 10px 14px; border: 0; background: none; border-bottom: 2px solid transparent; margin-bottom: -1px; color: var(--muted); font: 600 .88rem var(--font); cursor: pointer; white-space: nowrap; text-decoration: none !important; }
.tab:hover { color: var(--text); }
.tab.active { color: var(--primary); border-bottom-color: var(--primary); }
.tabs-sm { margin: -8px -8px 8px; padding: 0 8px; } .tabs-sm .tab { padding: 8px 12px; }
.checklist { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.checklist li { display: flex; align-items: center; gap: 10px; font-size: .88rem; color: var(--muted); }
.checklist li .ic { color: var(--danger); } .checklist li.ok { color: var(--text); } .checklist li.ok .ic { color: var(--success); }
.checklist li a { margin-left: auto; }

/* calendar */
.month-label { min-width: 150px; text-align: center; }
.cal-card { padding: 0; overflow: hidden; }
.cal-grid { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); }
.cal-dow { padding: 10px; font-size: .74rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); border-bottom: 1px solid var(--border); }
.cal-cell { min-height: 112px; padding: 6px; border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.cal-cell:nth-child(7n) { border-right: 0; }
.pad-cell { background: var(--surface-2); opacity: .5; }
.cal-day { font-size: .8rem; font-weight: 600; color: var(--muted); width: 24px; height: 24px; display: grid; place-items: center; border-radius: 50%; }
.cal-cell.today .cal-day { background: var(--primary); color: var(--primary-ink); }
.cal-ev { --c: var(--brand); display: block; font-size: .74rem; padding: 3px 6px; border-radius: 6px; background: color-mix(in srgb, var(--c) 13%, transparent); color: var(--text); border-left: 3px solid var(--c); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; text-decoration: none !important; font-weight: 500; }
.cal-ev span { font-weight: 700; margin-right: 4px; }
.cal-ev.due { background: var(--warning-soft); border-left-color: var(--warning); }
.cal-more { font-size: .72rem; color: var(--muted); padding-left: 6px; }
.cal-agenda { display: none; }
.agenda-row { --c: var(--brand); display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--border); color: var(--text); text-decoration: none !important; }
.agenda-date { width: 44px; text-align: center; border-left: 3px solid var(--c); line-height: 1.15; flex: none; }
.agenda-date b { display: block; font-size: 1.1rem; } .agenda-date small { font-size: .7rem; color: var(--muted); text-transform: uppercase; }

/* dashboards & reports */
.bars { display: grid; gap: 10px; }
.bar-row { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(60px, 1fr) auto; gap: 12px; align-items: center; font-size: .86rem; }
.bar-chips { display: flex; gap: 6px; justify-content: flex-end; flex-wrap: wrap; }
.bar-chips .pill { display: inline-flex; align-items: center; gap: 4px; white-space: nowrap; }
@media (max-width: 720px) { .bar-row { grid-template-columns: 1fr 1fr; } .bar-chips { grid-column: 1 / -1; justify-content: flex-start; } }
.grade-file { margin-bottom: 20px; }
.grade-form { padding-top: 18px; border-top: 1px solid var(--border); }
.bar-track { height: 10px; background: var(--surface-2); border-radius: 999px; overflow: hidden; }
.bar-track span { display: block; height: 100%; background: var(--c, var(--accent)); border-radius: inherit; }
.export-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; }
.danger-zone { border-color: color-mix(in srgb, var(--danger) 30%, var(--border)); }
.logo-preview { width: 52px; height: 52px; object-fit: contain; border-radius: 10px; background: var(--surface-2); padding: 4px; }

/* attendance & results */
.roster { list-style: none; margin: 0; padding: 0; }
.roster li { display: grid; grid-template-columns: minmax(180px, 1fr) auto minmax(120px, 220px); gap: 14px; align-items: center; padding: 10px 0; border-bottom: 1px solid var(--border); }
.seg { display: inline-flex; background: var(--surface-2); border-radius: var(--r-sm); padding: 3px; gap: 2px; }
.seg-btn { border: 0; background: none; padding: 6px 11px; border-radius: calc(var(--r-sm) - 2px); font: 600 .8rem var(--font); color: var(--muted); cursor: pointer; }
.seg-btn:hover { color: var(--text); }
.seg-btn.on { background: var(--surface); box-shadow: var(--shadow-sm); }
.seg-btn.on.s-present { color: var(--success); } .seg-btn.on.s-late { color: var(--warning); } .seg-btn.on.s-absent { color: var(--danger); } .seg-btn.on.s-excused { color: var(--info); }
:root[data-theme="dark"] .seg-btn.on { background: var(--border-strong); }
.att-card, .result-card { --c: var(--brand); display: grid; gap: 10px; border-top: 3px solid var(--c); }
.big-num { font-size: 2rem; font-weight: 800; letter-spacing: -.03em; }
.grade-pill { min-width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; font-weight: 800; background: var(--success-soft); color: var(--success); }
.cert-card { display: grid; gap: 8px; justify-items: start; }
.cert-icon { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; background: var(--highlight-soft); color: color-mix(in srgb, var(--highlight) 75%, var(--text)); }
.cert-preview { background: #fff; border-radius: var(--r-sm); overflow: auto; }
.pick-list { list-style: none; padding: 0; margin: 12px 0 0; display: grid; gap: 6px; max-height: 420px; overflow-y: auto; }
.pick-list li { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 10px 12px; border: 1px solid var(--border); border-radius: var(--r-sm); }

/* announcements, messages, notifications */
.ann { display: grid; gap: 8px; }
.ann.pinned { border-color: color-mix(in srgb, var(--highlight) 40%, var(--border)); }
.mail { display: grid; grid-template-columns: 360px minmax(0, 1fr); gap: 16px; align-items: start; }
.mail-list { padding: 8px; }
.mail-item { display: flex; gap: 12px; width: 100%; text-align: left; padding: 12px; border: 0; border-radius: var(--r-sm); background: none; color: var(--text); font: inherit; cursor: pointer; min-width: 0; }
.mail-item:hover { background: var(--surface-2); }
.mail-item.active { background: var(--primary-soft); }
.mail-item.unread { background: color-mix(in srgb, var(--primary) 6%, transparent); box-shadow: inset 3px 0 0 var(--primary); }
.mail-item.unread.active { background: var(--primary-soft); }
.mail-item.unread b { color: var(--primary); }
.unread-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--primary); margin-right: 6px; vertical-align: middle; }
.nowrap { white-space: nowrap; }
.ann-banner { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 14px; color: var(--text); text-decoration: none !important; border-left: 3px solid var(--primary); }
.ann-banner > span { min-width: 0; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.mail-item.unread .truncate:first-of-type { font-weight: 700; }
.mail-view { min-height: 360px; }
.mail-subject { margin-bottom: 14px; }
.mail-body { padding: 16px; background: var(--surface-2); border-radius: var(--r-sm); line-height: 1.7; }
.note-page { list-style: none; margin: 0; padding: 0; }
.note-page li { display: flex; gap: 12px; align-items: flex-start; padding: 14px 0; border-bottom: 1px solid var(--border); }
.note-page li:last-child { border-bottom: 0; }
.note-page li.unread b { color: var(--primary); }

/* profile */
.profile-card { text-align: center; display: grid; gap: 4px; justify-items: center; }
.profile-card .facts { width: 100%; text-align: left; margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--border); }
.avatar-edit { position: relative; margin-bottom: 8px; }
.avatar-edit .icon-btn { position: absolute; right: -4px; bottom: -4px; background: var(--surface); border: 1px solid var(--border); width: 32px; height: 32px; }

/* ---------- auth ---------- */
.auth-page { background: var(--surface); }
.auth { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); min-height: 100vh; }
.auth-brand { position: relative; display: flex; flex-direction: column; justify-content: space-between; padding: 48px clamp(28px, 6vw, 80px); color: #fff; background: radial-gradient(800px 500px at 0% 0%, color-mix(in srgb, var(--accent) 55%, transparent), transparent 60%), radial-gradient(600px 500px at 100% 100%, color-mix(in srgb, var(--highlight) 22%, transparent), transparent 60%), var(--brand); overflow: hidden; }
.auth-brand::after { content: ''; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px); background-size: 44px 44px; mask-image: linear-gradient(180deg, transparent, #000 40%, transparent); pointer-events: none; }
.auth-brand-inner { position: relative; z-index: 1; max-width: 560px; margin: auto 0; }
.auth-logo { display: flex; align-items: center; gap: 14px; margin-bottom: 44px; }
.auth-logo b { display: block; font-size: 1.25rem; font-weight: 800; }
.auth-logo small { display: block; opacity: .75; font-size: .85rem; }
.auth-brand h1 { color: #fff; font-size: clamp(2rem, 3.6vw, 3rem); line-height: 1.08; letter-spacing: -.035em; margin-bottom: 16px; }
.auth-sub { font-size: 1.05rem; opacity: .82; max-width: 500px; margin-bottom: 28px; }
.auth-accred { font-size: .8rem; opacity: .65; max-width: 460px; }
.auth-contact { position: relative; z-index: 1; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: .85rem; opacity: .85; }
.auth-contact a { color: #fff; } .auth-contact span[data-icon]:not(:first-child) { margin-left: 12px; }
.auth-panel { position: relative; display: grid; place-items: center; padding: 40px 24px; background: var(--bg); }
.auth-theme { position: absolute; top: 18px; right: 18px; }
.auth-card { width: min(100%, 420px); display: grid; gap: 4px; }
.auth-card-logo { display: none; }
.auth-card h2 { font-size: 1.7rem; font-weight: 800; letter-spacing: -.025em; }
.auth-card > .muted { margin-bottom: 22px; }
.auth-card form { display: grid; gap: 16px; }
.divider { display: flex; align-items: center; gap: 12px; margin: 26px 0 14px; color: var(--muted); font-size: .76rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; }
.divider::before, .divider::after { content: ''; flex: 1; height: 1px; background: var(--border); }
.demo-grid { display: grid; gap: 8px; margin-bottom: 10px; }
.demo-btn { display: flex; align-items: center; gap: 12px; padding: 10px 14px; border: 1px solid var(--border); border-radius: var(--r-sm); background: var(--surface); color: var(--text); font: inherit; text-align: left; cursor: pointer; transition: border-color .15s, background .15s; }
.demo-btn:hover { border-color: var(--primary); background: var(--primary-soft); }
.demo-btn .ic { color: var(--primary); }
.auth-foot { margin-top: 22px; }

/* auth — motion & showcase */
@property --ring { syntax: '<number>'; inherits: false; initial-value: 0; }
.auth-brand { background: linear-gradient(150deg, color-mix(in srgb, var(--brand) 92%, #000), var(--brand) 55%, color-mix(in srgb, var(--brand) 70%, var(--accent))); }
.auth-blobs { position: absolute; inset: 0; overflow: hidden; pointer-events: none; filter: blur(60px); opacity: .75; }
.auth-blobs i { position: absolute; width: 46vmax; height: 46vmax; border-radius: 50%; animation: drift 22s ease-in-out infinite alternate; }
.auth-blobs i:nth-child(1) { background: color-mix(in srgb, var(--accent) 75%, transparent); top: -18vmax; left: -14vmax; }
.auth-blobs i:nth-child(2) { background: color-mix(in srgb, var(--highlight) 45%, transparent); bottom: -22vmax; right: -12vmax; width: 38vmax; height: 38vmax; animation-duration: 26s; animation-delay: -6s; }
.auth-blobs i:nth-child(3) { background: color-mix(in srgb, #60A5FA 40%, transparent); top: 35%; left: 40%; width: 26vmax; height: 26vmax; animation-duration: 18s; animation-delay: -10s; }
@keyframes drift { 0% { transform: translate(0, 0) scale(1); } 50% { transform: translate(6vmax, 4vmax) scale(1.12); } 100% { transform: translate(-4vmax, 7vmax) scale(.92); } }
.auth-brand-inner { margin: 0; padding-top: 4vh; }
.auth-logo { margin-bottom: 36px; }
.grad-text { background: linear-gradient(90deg, #fff, color-mix(in srgb, var(--highlight) 70%, #fff), color-mix(in srgb, var(--accent) 45%, #fff), #fff); background-size: 300% 100%; -webkit-background-clip: text; background-clip: text; color: transparent; animation: sheen 6s linear infinite; }
@keyframes sheen { to { background-position: -300% 0; } }
.auth-stats { display: flex; gap: 28px; margin: 4px 0 30px; }
.auth-stats b { display: block; font-size: 1.9rem; font-weight: 800; letter-spacing: -.03em; line-height: 1.1; font-variant-numeric: tabular-nums; }
.auth-stats span { font-size: .8rem; opacity: .7; text-transform: uppercase; letter-spacing: .08em; }
.auth-stats div + div { padding-left: 28px; border-left: 1px solid rgba(255,255,255,.18); }
.auth-stage { position: relative; height: 280px; max-width: 520px; margin-bottom: 26px; }
.fc { position: absolute; display: grid; gap: 4px; padding: 14px 16px; border-radius: 16px; color: #fff; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.18); backdrop-filter: blur(14px) saturate(1.3); -webkit-backdrop-filter: blur(14px) saturate(1.3); box-shadow: 0 18px 40px -18px rgba(0,0,0,.5); animation: rise .8s cubic-bezier(.2,.7,.2,1) both, bob 6s ease-in-out infinite; }
.fc b { font-size: .92rem; } .fc small { font-size: .76rem; } .fc-muted { opacity: .7; }
.fc-live { left: 0; top: 0; width: 300px; animation-delay: .5s, 1.3s; }
.fc-progress { right: 0; top: 132px; display: flex; align-items: center; gap: 12px; animation-delay: .7s, 2.1s; }
.fc-cert { left: 24px; bottom: 0; display: flex; align-items: center; gap: 12px; animation-delay: .9s, .4s; }
.fc-row { display: flex; align-items: center; gap: 8px; }
.fc-progress > div, .fc-cert > div { display: grid; gap: 2px; }
.fc-dot { width: 8px; height: 8px; border-radius: 50%; background: #93C5FD; }
.fc-dot.on { background: #F87171; box-shadow: 0 0 0 0 rgba(248,113,113,.7); animation: ping 1.6s infinite; }
@keyframes ping { 70% { box-shadow: 0 0 0 9px rgba(248,113,113,0); } 100% { box-shadow: 0 0 0 0 rgba(248,113,113,0); } }
.fc-avatars { display: flex; align-items: center; margin-top: 8px; }
.fc-avatars span { width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center; font-size: .62rem; font-weight: 700; background: color-mix(in srgb, var(--accent) 70%, #fff); color: var(--brand); border: 2px solid rgba(255,255,255,.6); margin-left: -6px; }
.fc-avatars span:first-child { margin-left: 0; }
.fc-avatars em { margin-left: auto; font-style: normal; font-size: .74rem; display: inline-flex; gap: 5px; align-items: center; padding: 3px 9px; border-radius: 999px; background: rgba(255,255,255,.14); }
.fc-ring { --ring: 0; width: 52px; height: 52px; border-radius: 50%; display: grid; place-items: center; background: conic-gradient(var(--highlight) calc(var(--ring) * 1%), rgba(255,255,255,.18) 0); animation: fill 1.6s 1.2s cubic-bezier(.3,.8,.3,1) forwards; position: relative; }
.fc-ring::before { content: ''; position: absolute; inset: 6px; border-radius: 50%; background: color-mix(in srgb, var(--brand) 85%, #000); }
.fc-ring span { position: relative; font-size: .78rem; font-weight: 800; }
@keyframes fill { to { --ring: 72; } }
.fc-award { width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center; background: color-mix(in srgb, var(--highlight) 85%, transparent); color: #1a1405; }
.fc-cert > .ic { color: #4ADE80; }
@keyframes bob { 0%, 100% { translate: 0 0; } 50% { translate: 0 -10px; } }
@keyframes rise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
.rise { animation: rise .7s cubic-bezier(.2,.7,.2,1) both; }
.auth-brand-inner > .rise:nth-child(2) { animation-delay: .08s; } .auth-brand-inner > .rise:nth-child(3) { animation-delay: .16s; } .auth-brand-inner > .rise:nth-child(4) { animation-delay: .24s; } .auth-brand-inner > .rise:last-child { animation-delay: 1s; }
/* sign-in card */
.auth-panel { background: radial-gradient(circle at 1px 1px, color-mix(in srgb, var(--text) 9%, transparent) 1px, transparent 0) 0 0 / 22px 22px, var(--bg); overflow: hidden; }
.auth-panel::before { content: ''; position: absolute; width: 420px; height: 420px; border-radius: 50%; right: -160px; top: -160px; background: radial-gradient(circle, var(--primary-soft), transparent 70%); animation: drift 20s ease-in-out infinite alternate; }
.auth-card { position: relative; padding: 34px 32px; border-radius: 24px; background: color-mix(in srgb, var(--surface) 88%, transparent); border: 1px solid var(--border); box-shadow: 0 30px 60px -30px rgba(16,24,40,.35); backdrop-filter: blur(10px); animation: rise .7s .1s cubic-bezier(.2,.7,.2,1) both; }
.auth-card > * { animation: rise .6s cubic-bezier(.2,.7,.2,1) both; }
.auth-card > :nth-child(2) { animation-delay: .2s; } .auth-card > :nth-child(3) { animation-delay: .26s; } .auth-card > :nth-child(5) { animation-delay: .32s; } .auth-card > :nth-child(6) { animation-delay: .4s; } .auth-card > :nth-child(7) { animation-delay: .48s; }
.auth-card .input { transition: border-color .2s, box-shadow .2s, transform .2s; }
.auth-card .input:focus { transform: translateY(-1px); box-shadow: 0 0 0 4px var(--primary-soft), 0 8px 18px -10px color-mix(in srgb, var(--primary) 60%, transparent); }
#loginBtn { position: relative; overflow: hidden; background: linear-gradient(135deg, var(--primary), color-mix(in srgb, var(--primary) 70%, var(--accent))); box-shadow: 0 12px 24px -12px color-mix(in srgb, var(--primary) 80%, transparent); transition: transform .15s, box-shadow .2s; }
#loginBtn:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 16px 28px -12px color-mix(in srgb, var(--primary) 85%, transparent); }
#loginBtn::after { content: ''; position: absolute; inset: 0; background: linear-gradient(110deg, transparent 30%, rgba(255,255,255,.35) 50%, transparent 70%); transform: translateX(-120%); }
#loginBtn:hover:not(:disabled)::after { transform: translateX(120%); transition: transform .7s ease; }
.demo-btn { transition: border-color .15s, background .15s, transform .15s; }
.auth-card.shake { animation: shake .4s; }
@keyframes shake { 20%, 60% { transform: translateX(-6px); } 40%, 80% { transform: translateX(6px); } }
@media (max-width: 860px) { .auth-card { padding: 26px 20px; } }

/* auth — official logo + fit to one screen */
.logo-plate { display: inline-flex; align-items: center; justify-content: center; background: #fff; border-radius: 14px; padding: 8px 14px; box-shadow: 0 10px 28px -12px rgba(0,0,0,.45); }
.logo-plate img { display: block; height: 52px; width: auto; }
.auth-card-logo.logo-plate { display: none; }
.auth-logo { gap: 16px; margin-bottom: clamp(16px, 4vh, 36px); }
.auth { height: 100vh; height: 100svh; min-height: 0; overflow: hidden; }
.auth-brand { padding: clamp(20px, 4.5vh, 48px) clamp(28px, 5vw, 72px); overflow: hidden; }
.auth-brand-inner { padding-top: 0; margin: auto 0; }
.auth-brand h1 { font-size: clamp(1.7rem, min(3.4vw, 5.2vh), 3rem); margin-bottom: clamp(8px, 1.6vh, 16px); }
.auth-sub { margin-bottom: clamp(12px, 2.6vh, 28px); }
.auth-stats { margin: 0 0 clamp(14px, 3vh, 30px); }
.auth-stage { height: clamp(150px, 30vh, 280px); margin-bottom: clamp(10px, 2.4vh, 26px); }
.auth-panel { padding: clamp(12px, 3vh, 40px) 24px; overflow-y: auto; }
.auth-card { padding: clamp(20px, 3.4vh, 32px) clamp(20px, 3vw, 32px); gap: 2px; }
.auth-card h2 { font-size: clamp(1.4rem, 3.4vh, 1.7rem); }
.auth-card > .muted { margin-bottom: clamp(10px, 2.2vh, 20px); }
.auth-card form { gap: clamp(10px, 1.8vh, 16px); }
.divider { margin: clamp(14px, 2.6vh, 24px) 0 10px; }
.demo-grid { grid-template-columns: repeat(3, 1fr); margin-bottom: 6px; }
.demo-btn { flex-direction: column; justify-content: center; gap: 4px; padding: 10px 6px; text-align: center; }
.demo-btn b { font-size: .8rem; font-weight: 700; }
.demo-btn:hover { transform: translateY(-2px); }
.demo-note { margin: 4px 0 0; }
.auth-foot { margin-top: clamp(10px, 2vh, 20px); }
.fc-progress { top: 46%; } .fc-live { width: min(300px, 62%); }
@media (max-height: 820px) { .auth-accred { display: none; } .fc-cert { display: none; } .logo-plate img { height: 44px; } }
@media (max-height: 680px) { .auth-stage { display: none; } .auth-sub { display: none; } }
@media (max-height: 700px) { .auth-card > .muted, .demo-note { display: none; } }
@media (max-height: 640px) { .auth-card-logo.logo-plate { display: none !important; } }
@media (max-width: 860px) { .auth-card-logo.logo-plate { display: inline-flex; justify-self: start; margin-bottom: clamp(8px, 2vh, 16px); padding: 6px 10px; } .auth-card-logo img { height: 40px; } }
.google-btn { gap: 10px; font-weight: 650; background: var(--surface); }
.google-btn:hover:not(:disabled) { border-color: var(--primary); background: var(--surface); box-shadow: 0 6px 16px -10px rgba(16,24,40,.35); }
.divider-tight { margin: clamp(10px, 2vh, 16px) 0 2px; }
.legal { max-width: 760px; }
.legal h2 { font-size: 1.05rem; margin-top: 10px; }
.legal ul { margin: 0; padding-left: 20px; display: grid; gap: 6px; }
.verify-plate { justify-self: center; } .verify-plate img { height: 64px; }

/* verify */
.verify-page { background: var(--bg); }
.verify { max-width: 620px; margin: 0 auto; padding: 48px 20px; display: grid; gap: 22px; }
.verify .brand { padding: 0; justify-self: center; }
.verify-card { padding: 30px; display: grid; gap: 14px; }
.verify-result { display: flex; gap: 14px; align-items: flex-start; padding: 16px; border-radius: var(--r-sm); margin-top: 6px; }
.verify-result.good { background: var(--success-soft); } .verify-result.good > .ic { color: var(--success); }
.verify-result.bad { background: var(--danger-soft); } .verify-result.bad > .ic { color: var(--danger); }
.verify-result .facts { margin-top: 10px; }

/* ---------- responsive ---------- */
@media (max-width: 1180px) {
  .layout-aside { grid-template-columns: minmax(0, 1fr) 300px; }
}
@media (max-width: 1024px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { position: fixed; left: 0; top: 0; bottom: 0; width: min(290px, 86vw); transform: translateX(-102%); transition: transform .22s ease; box-shadow: var(--shadow-lg); }
  .sidebar.open { transform: none; }
  .scrim { display: block; position: fixed; inset: 0; z-index: 35; background: rgba(10, 15, 26, .45); opacity: 0; pointer-events: none; transition: opacity .2s; }
  .scrim.show { opacity: 1; pointer-events: auto; }
  .only-mobile { display: inline-flex !important; }
  .layout-aside, .layout-aside.reverse { grid-template-columns: 1fr; }
  .mail { grid-template-columns: 1fr; }
  .mail .mail-view { display: none; } .mail.viewing .mail-view { display: block; } .mail.viewing .mail-list { display: none; }
}
@media (max-width: 860px) {
  .auth { grid-template-columns: 1fr; }
  .auth-brand { display: none; }

  .grid-2 { grid-template-columns: 1fr; }
  .check-grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  body { font-size: 14px; }
  .topbar { padding: 0 12px; gap: 6px; }
  .content { padding: 18px 16px 32px; }
  .app-foot { padding: 14px 16px; flex-direction: column; }
  .hide-sm { display: none !important; }
  .course-tools .btn { padding: 0 9px; }
  .crumbs a, .crumbs .ic { display: none; }
  h1 { font-size: 1.35rem; }
  .page-head { margin-bottom: 16px; align-items: flex-start; }
  .page-actions { width: 100%; } .page-actions .btn { flex: 1 1 auto; }
  .card { padding: 16px; } .table-wrap { margin: 0 -16px; padding: 0 16px; }
  .stats { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat { padding: 12px; gap: 10px; flex-direction: column; } .stat-value { font-size: 1.15rem; }
  .form-grid, .filter-row { grid-template-columns: 1fr; }
  .course-grid { grid-template-columns: 1fr; }
  .course-hero { flex-direction: column; align-items: stretch; padding: 20px 18px; }
  .hero-progress { flex-direction: row; display: flex; justify-content: flex-start; text-align: left; }
  .ring { width: 64px; height: 64px; } .ring span { font-size: .95rem; } .ring::before { inset: 6px; }
  .hero-actions .btn { flex: 1 1 auto; }
  .session-row { padding: 12px; gap: 10px; align-items: flex-start; flex-wrap: wrap; }
  .session-row .s-body { flex: 1 1 calc(100% - 50px); }
  .session-row > .badge { margin-left: 44px; }
  .session-row.pinned > .badge { margin-left: 44px; }
  .builder .session-row > .row { width: 100%; justify-content: flex-end; }
  .s-body small { white-space: normal; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
  .pager { grid-template-columns: 1fr; }
  .toolbar .search-box { min-width: 0; width: 100%; }
  .res-add { grid-template-columns: 1fr 1fr; }
  .roster li { grid-template-columns: 1fr; gap: 8px; }
  .seg { width: 100%; } .seg-btn { flex: 1; padding: 7px 4px; }
  .facts > div { grid-template-columns: 110px 1fr; }
  .facts.cols-2 { grid-template-columns: 1fr; }
  .cal-grid { display: none; } .cal-agenda { display: block; }
  .popover { position: fixed; left: 12px; right: 12px; top: calc(var(--topbar) + 4px); width: auto; }
  .modal-backdrop { padding: 0; align-items: end; }
  .modal { max-height: 92vh; border-radius: var(--r-lg) var(--r-lg) 0 0; }
  .modal-lg, .modal-xl, .modal-md { max-width: 100%; }
  .table-tools select { flex: 1 1 140px; }
  .table-count { width: 100%; margin: 0; }
  /* tables collapse to cards */
  .table thead { display: none; }
  .table, .table tbody, .table tr, .table td { display: block; width: 100%; }
  .table tr:not(.tr-empty) { padding: 12px 0; border-bottom: 1px solid var(--border); }
  .table tr:last-child { border-bottom: 0; }
  .table td { border: 0; padding: 3px 0; display: flex; justify-content: space-between; gap: 12px; text-align: right; }
  .table td::before { content: attr(data-label); font-size: .74rem; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; text-align: left; flex: none; padding-top: 2px; }
  .table td.td-primary { display: block; text-align: left; padding-bottom: 6px; }
  .table td.td-primary::before, .table td.td-actions::before, .tr-empty td::before { display: none; }
  .table td.td-actions { justify-content: flex-end; padding-top: 8px; }
  .table tbody tr:not(.tr-empty):hover td { background: none; }
  .table td > .person, .table td > .inline-progress { justify-content: flex-end; }
  .table td.td-primary > .person { justify-content: flex-start; }
  .w-80 { width: 100px; }
  /* the permission matrix stays a grid on phones (scrolls sideways) */
  .table.perm-table { display: table; min-width: 520px; } .perm-table thead { display: table-header-group; } .perm-table tbody { display: table-row-group; } .perm-table tr, .perm-table tr:not(.tr-empty) { display: table-row; padding: 0; } .perm-table td, .perm-table td.td-primary { display: table-cell; width: auto; text-align: center; padding: 8px 6px; border-bottom: 1px solid var(--border); } .perm-table td.td-primary { text-align: left; } .perm-table td::before { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}
@media print {
  .sidebar, .topbar, .app-foot, .page-actions, .toast-stack { display: none !important; }
  .shell { display: block; } .content { padding: 0; }
}

/* ---------- dark theme: depth, glow & interaction ---------- */
:root[data-theme="dark"] {
  --bg: #060A13; --surface: #0D1424; --surface-2: #131C31;
  --border: rgba(148, 163, 184, .13); --border-strong: rgba(148, 163, 184, .24);
  --text: #EAF0F8; --text-2: #C2CCDB; --muted: #8C99AE;
  --primary: color-mix(in srgb, var(--brand) 30%, #7CC0FF); --primary-ink: #04101F;
  --accent-bright: color-mix(in srgb, var(--accent) 45%, #5EEAD4);
  --glow: color-mix(in srgb, var(--primary) 45%, transparent);
  --glow-soft: color-mix(in srgb, var(--primary) 18%, transparent);
  --sheen: linear-gradient(180deg, rgba(255, 255, 255, .045), rgba(255, 255, 255, .01));
  --shadow: 0 1px 0 rgba(255, 255, 255, .04) inset, 0 10px 30px -18px rgba(0, 0, 0, .9);
}
:root[data-theme="dark"] body {
  background:
    radial-gradient(1000px 520px at 55% -12%, color-mix(in srgb, var(--brand) 55%, transparent), transparent 62%),
    radial-gradient(700px 500px at 105% 105%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 60%),
    var(--bg);
  background-attachment: fixed;
}
/* glass surfaces with an inner highlight */
:root[data-theme="dark"] :is(.card, .stat, .course-card, .session-row, .up-card, .pager-link, .modal, .popover, .search-box, .chip, .user-chip) {
  background: var(--sheen), var(--surface);
  border-color: var(--border);
  box-shadow: var(--shadow);
}
:root[data-theme="dark"] .course-hero { background: radial-gradient(600px 260px at 0% 0%, color-mix(in srgb, var(--c) 30%, transparent), transparent 70%), var(--sheen), var(--surface); border-color: var(--border); }
/* cursor spotlight + glowing lift */
:root[data-theme="dark"] :is(.card, .stat, .course-card, .session-row, .up-card, .pager-link) { position: relative; isolation: isolate; }
:root[data-theme="dark"] :is(.card, .stat, .course-card, .session-row, .up-card, .pager-link)::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; z-index: -1; opacity: 0; transition: opacity .25s;
  background: radial-gradient(320px circle at var(--mx, 50%) var(--my, 50%), color-mix(in srgb, var(--c, var(--primary)) 16%, transparent), transparent 65%);
}
:root[data-theme="dark"] :is(.card, .stat, .course-card, .session-row, .up-card, .pager-link):hover::after { opacity: 1; }
:root[data-theme="dark"] :is(a.stat, a.course-card, .course-card.manage, a.session-row, .up-card, .pager-link):hover {
  border-color: color-mix(in srgb, var(--c, var(--primary)) 55%, transparent);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--c, var(--primary)) 25%, transparent), 0 18px 40px -18px color-mix(in srgb, var(--c, var(--primary)) 55%, transparent);
  transform: translateY(-2px);
}
:root[data-theme="dark"] a.session-row:hover { transform: translateX(3px); }
/* shell */
:root[data-theme="dark"] .sidebar { background: linear-gradient(180deg, #0A1120, #070B15); border-right-color: var(--border); }
:root[data-theme="dark"] .topbar { background: color-mix(in srgb, var(--bg) 70%, transparent); }
:root[data-theme="dark"] .nav a.active { background: linear-gradient(90deg, var(--glow-soft), transparent); color: var(--text); box-shadow: inset 3px 0 0 var(--primary); }
:root[data-theme="dark"] .nav a.active .ic { color: var(--primary); filter: drop-shadow(0 0 6px var(--glow)); }
:root[data-theme="dark"] .nav-count { box-shadow: 0 0 10px var(--glow); }
/* headings, icons, data */
:root[data-theme="dark"] :is(.page-head h1, .course-hero h1, .session-head h1) {
  background: linear-gradient(90deg, #fff 30%, color-mix(in srgb, var(--primary) 70%, #fff)); -webkit-background-clip: text; background-clip: text; color: transparent;
}
:root[data-theme="dark"] :is(.stat-icon, .up-icon) { background: linear-gradient(135deg, var(--glow-soft), color-mix(in srgb, var(--accent) 18%, transparent)); color: var(--primary); box-shadow: inset 0 0 0 1px var(--glow-soft); }
:root[data-theme="dark"] .stat-value { text-shadow: 0 0 24px var(--glow-soft); }
:root[data-theme="dark"] :is(.progress span, .bar-track span) { background: linear-gradient(90deg, var(--c, var(--accent-bright)), color-mix(in srgb, var(--c, var(--accent-bright)) 55%, #fff)); box-shadow: 0 0 12px color-mix(in srgb, var(--c, var(--accent-bright)) 60%, transparent); }
:root[data-theme="dark"] :is(.s-num.done, .date-chip.today) { box-shadow: 0 0 14px color-mix(in srgb, var(--success) 35%, transparent); }
:root[data-theme="dark"] .session-row.is-today { box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent-bright) 50%, transparent), 0 0 28px -6px color-mix(in srgb, var(--accent-bright) 45%, transparent); }
/* controls */
:root[data-theme="dark"] .btn-primary { background: linear-gradient(135deg, var(--primary), color-mix(in srgb, var(--primary) 55%, var(--accent-bright))); box-shadow: 0 8px 24px -10px var(--glow), inset 0 1px 0 rgba(255, 255, 255, .25); }
:root[data-theme="dark"] .btn-primary:hover:not(:disabled) { background: linear-gradient(135deg, var(--primary), color-mix(in srgb, var(--primary) 55%, var(--accent-bright))); box-shadow: 0 10px 30px -8px var(--glow), 0 0 0 3px var(--glow-soft), inset 0 1px 0 rgba(255, 255, 255, .3); filter: brightness(1.08); }
:root[data-theme="dark"] .btn-secondary { background: rgba(255, 255, 255, .03); }
:root[data-theme="dark"] :is(.btn-secondary, .btn-ghost, .icon-btn):hover:not(:disabled) { background: rgba(255, 255, 255, .06); }
:root[data-theme="dark"] .input { background: rgba(255, 255, 255, .03); border-color: var(--border-strong); }
:root[data-theme="dark"] :is(.input:focus, .search-box:focus-within) { border-color: var(--primary); box-shadow: 0 0 0 3px var(--glow-soft), 0 0 18px -4px var(--glow); }
:root[data-theme="dark"] .chip.active { background: var(--primary); color: var(--primary-ink); border-color: var(--primary); box-shadow: 0 0 16px -2px var(--glow); }
:root[data-theme="dark"] .tab.active { text-shadow: 0 0 12px var(--glow); }
:root[data-theme="dark"] .switch input:checked + .switch-track { box-shadow: 0 0 12px var(--glow); }
:root[data-theme="dark"] .badge { box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--c) 25%, transparent); }
:root[data-theme="dark"] .table tbody tr:not(.tr-empty):hover td { background: rgba(255, 255, 255, .025); }
:root[data-theme="dark"] .modal-backdrop { background: rgba(2, 6, 14, .7); }
/* sign-in page in dark */
:root[data-theme="dark"] .auth-panel { background: radial-gradient(circle at 1px 1px, rgba(255, 255, 255, .06) 1px, transparent 0) 0 0 / 22px 22px, var(--bg); }
:root[data-theme="dark"] .auth-card { background: var(--sheen), color-mix(in srgb, var(--surface) 85%, transparent); box-shadow: 0 30px 70px -30px rgba(0, 0, 0, .9), 0 0 0 1px var(--border), 0 0 60px -30px var(--glow); }
:root[data-theme="dark"] .google-btn { background: rgba(255, 255, 255, .04); }
/* smooth colour change + circular reveal when switching theme */
body, .sidebar, .topbar, .card, .stat, .course-card, .session-row, .input { transition: background-color .3s, border-color .3s, color .3s, box-shadow .25s, transform .2s; }
::view-transition-old(root), ::view-transition-new(root) { animation: none; mix-blend-mode: normal; }
::view-transition-new(root) { animation: theme-reveal .55s cubic-bezier(.4, 0, .2, 1); }
@keyframes theme-reveal { from { clip-path: circle(0 at var(--vt-x, 50%) var(--vt-y, 0)); } to { clip-path: circle(150vmax at var(--vt-x, 50%) var(--vt-y, 0)); } }

/* ---------- SDC Learn AI ---------- */
.ai-badge { display: inline-flex; align-items: center; gap: 6px; font-size: .72rem; font-weight: 700; letter-spacing: .02em; color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent); border: 1px solid color-mix(in srgb, var(--accent) 28%, transparent); padding: 3px 8px; border-radius: 999px; vertical-align: middle; }
.ai-provider-layout { display: grid; grid-template-columns: 240px minmax(0, 1fr); background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); box-shadow: var(--shadow-sm); }
.ai-provider-sidebar { padding: 24px 16px; background: var(--surface-2); border-right: 1px solid var(--border); border-radius: var(--r-lg) 0 0 var(--r-lg); }
.ai-provider-nav-head { padding: 0 12px 20px; }
.ai-provider-nav-head h3 { font-size: .9rem; margin-bottom: 6px; }
.ai-provider-tabs { display: flex; flex-direction: column; gap: 6px; }
.ai-provider-tab { display: flex; align-items: center; justify-content: space-between; gap: 10px; width: 100%; padding: 12px; border: 1px solid transparent; border-radius: var(--r-sm); background: transparent; color: var(--text-2); font: inherit; font-size: .88rem; font-weight: 600; text-align: left; cursor: pointer; }
.ai-provider-tab-copy { display: grid; gap: 5px; }
.ai-provider-state { display: flex; align-items: center; gap: 6px; font-size: .73rem; font-weight: 400; color: var(--muted); }
.ai-provider-state::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--muted); }
.ai-provider-state.configured { color: var(--success); }
.ai-provider-state.configured::before { background: var(--success); }
.ai-provider-tab-arrow { font-size: 1.25rem; opacity: 0; }
.ai-provider-tab:hover { background: var(--surface); }
.ai-provider-tab[aria-selected="true"] { background: var(--primary-soft); color: var(--primary); border-color: color-mix(in srgb, var(--primary) 25%, var(--border)); }
.ai-provider-tab[aria-selected="true"] .ai-provider-tab-arrow { opacity: 1; }
.ai-provider-panels { display: flex; min-width: 0; }
.ai-provider { display: flex; flex-direction: column; width: 100%; min-width: 0; padding: 28px 32px; }
.ai-provider-heading { padding-bottom: 20px; border-bottom: 1px solid var(--border); }
.ai-provider-heading h3 { font-size: 1.1rem; }
.ai-provider-heading p { margin-top: 6px; }
.ai-provider [data-prov-status] { margin-top: 14px; overflow-wrap: anywhere; }
.ai-provider .form-grid.tight { gap: 20px; margin-top: 24px; margin-bottom: 24px; }
.ai-provider-models { display: flex; align-items: flex-start; flex-direction: column; gap: 10px; }
.ai-provider .ai-provider-actions { margin-top: auto; padding-top: 20px; border-top: 1px solid var(--border); }
@media (max-width: 760px) {
  .ai-provider-layout { grid-template-columns: 1fr; }
  .ai-provider-sidebar { padding: 16px; border-right: 0; border-bottom: 1px solid var(--border); border-radius: var(--r-lg) var(--r-lg) 0 0; }
  .ai-provider-nav-head { padding: 0 4px 14px; }
  .ai-provider-tabs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ai-provider-tab { padding: 10px; }
  .ai-provider { padding: 22px 20px; }
}
.ai-drawer { position: fixed; inset: 0; z-index: 80; pointer-events: none; opacity: 0; transition: opacity .2s; }
.ai-drawer.open { pointer-events: auto; opacity: 1; }
.ai-drawer-backdrop { position: absolute; inset: 0; background: rgba(8, 16, 32, .45); backdrop-filter: blur(2px); }
.ai-drawer-panel { position: absolute; top: 0; right: 0; height: 100%; width: min(420px, 100%); background: var(--surface); border-left: 1px solid var(--border); box-shadow: -20px 0 50px -30px rgba(0,0,0,.45); display: flex; flex-direction: column; transform: translateX(12px); transition: transform .22s ease; }
.ai-drawer.open .ai-drawer-panel { transform: none; }
.ai-drawer-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; padding: 16px 18px; border-bottom: 1px solid var(--border); }
.ai-drawer-head h2 { margin: 6px 0 0; font-size: 1.1rem; }
.ai-drawer-body { flex: 1; overflow: auto; display: flex; flex-direction: column; min-height: 0; }
.ai-chat { flex: 1; overflow: auto; padding: 14px; display: flex; flex-direction: column; gap: 10px; }
.ai-bubble { max-width: 92%; padding: 10px 12px; border-radius: 14px; background: var(--bg); border: 1px solid var(--border); }
.ai-bubble.user { align-self: flex-end; background: color-mix(in srgb, var(--brand) 12%, var(--surface)); border-color: color-mix(in srgb, var(--brand) 30%, var(--border)); }
.ai-bubble.assistant { align-self: flex-start; }
.ai-bubble-text { font-size: .92rem; line-height: 1.45; }
.ai-bubble-meta { margin-top: 8px; display: flex; flex-direction: column; gap: 6px; }
.ai-compose { display: flex; gap: 8px; padding: 12px; border-top: 1px solid var(--border); background: var(--surface); }
.ai-compose .input { flex: 1; resize: none; }
.ai-summary .prose, .prose { font-size: .92rem; line-height: 1.5; }
.quiz-attempt .quiz-q { margin: 0 0 14px; padding: 14px; border: 1px solid var(--border); border-radius: var(--radius, 12px); }
.quiz-attempt .sticky-foot { position: sticky; bottom: 0; background: color-mix(in srgb, var(--surface) 92%, transparent); backdrop-filter: blur(8px); padding: 12px 0; z-index: 2; }
.card.tight { padding: 12px; }
.form-grid.tight { margin-top: 8px; }
.mt-sm { margin-top: 8px; }
.danger { color: var(--danger, #b42318); }
@media (max-width: 640px) {
  .ai-drawer-panel { width: 100%; }
  .ai-compose { flex-direction: column; }
}

/* Quiz editor */
.row-end { display: flex; justify-content: flex-end; margin-top: 8px; }
.opt-row { display: flex; align-items: center; gap: 8px; }
.opt-row .input { flex: 1; }
.opt-row input[type=radio], .opt-row input[type=checkbox] { width: 16px; height: 16px; flex: none; accent-color: var(--primary); }
/* AI drawer text and quiz answers: padded, one option per line */
.ai-drawer-body > .help { margin: 0; padding: 12px 18px 0; }
.quiz-q legend, .ai-drawer fieldset legend { padding: 0 6px; font-weight: 600; line-height: 1.45; }
.quiz-q .check, .ai-drawer fieldset .check { display: flex; width: 100%; padding: 8px 10px; margin-top: 4px; border-radius: var(--r-sm); transition: background .12s; }
.quiz-q .check:hover, .ai-drawer fieldset .check:hover { background: var(--surface-2); }
.ai-drawer fieldset.card { margin: 0 0 10px; }
.result-card .facts.cols-2 { margin-top: 10px; }
/* Side-column resources: file name gets the full width, actions sit on their own row */
.layout-aside aside .resource-list li { flex-wrap: wrap; }
.layout-aside aside .resource-list li > .grow { flex: 1 1 calc(100% - 52px); }
.layout-aside aside .resource-list li > [data-summarize] { margin-left: 42px; }

/* ---------- AI course generator (js/pages-coursegen.js) ---------- */
.cg-steps { display: flex; gap: 8px; flex-wrap: wrap; list-style: none; margin: 0 0 16px; padding: 0; font-size: .84rem; font-weight: 600; }
.cg-steps li { padding: 6px 12px; border-radius: 999px; background: var(--surface-2); color: var(--muted); border: 1px solid var(--border); }
.cg-steps li.on { background: var(--primary-soft); color: var(--primary); border-color: color-mix(in srgb, var(--primary) 35%, var(--border)); }
.cg-steps li.done { color: var(--success); }
.cg-brief .form-foot, .cg-section + .form-foot, .cg-review ~ .form-foot, .form-foot.cg-foot { margin-top: 18px; }
.cg-total-field .cg-total { min-height: 40px; display: flex; align-items: center; gap: 6px; padding: 0 12px; border: 1px dashed var(--border-strong); border-radius: var(--r-sm); background: var(--surface-2); }
.cg-total.over { border-color: var(--danger); background: var(--danger-soft); }
.cg-wait { display: flex; align-items: center; gap: 16px; }
.cg-wait p { margin: 4px 0 0; }
.cg-note, .cg-ok { background: var(--info-soft); color: var(--info); }
.cg-demo { background: var(--warning-soft); color: var(--warning); border: 1px solid color-mix(in srgb, var(--warning) 35%, transparent); }
.cg-warn { background: var(--warning-soft); color: var(--text-2); border: 1px solid color-mix(in srgb, var(--warning) 30%, transparent); }
.cg-warn ul { margin: 6px 0 0; padding-left: 20px; }
.cg-warn li.block { color: var(--danger); font-weight: 600; }
.cg-summary { margin-bottom: 14px; padding: 12px 16px; }
.cg-section { margin-bottom: 16px; }
.cg-list { list-style: none; margin: 8px 0 0; padding: 0; display: grid; gap: 8px; }
.cg-row { display: flex; align-items: flex-start; gap: 8px; }
.cg-row > .input { flex: 1 1 auto; min-width: 0; }
.cg-sbody { flex: 1 1 auto; min-width: 0; display: grid; gap: 6px; }
.cg-refs { flex: 0 0 96px; }
.cg-btns { display: inline-flex; gap: 2px; flex: none; }
.cg-module { margin-bottom: 14px; padding: 16px; }
.cg-mhead { align-items: center; margin-bottom: 8px; }
.cg-mhead .pill { white-space: nowrap; flex: none; }
.cg-msum { margin-bottom: 8px; }
.cg-mark { display: block; margin: 4px 0 0 34px; font-size: .78rem; color: var(--warning); }
.has-mark > .cg-row .input, .field.has-mark > .input { border-color: var(--warning); }
.cg-review h3 { margin: 16px 0 6px; }
.cg-ro { margin: 0; padding-left: 22px; }
.cg-rmod { margin-bottom: 10px; }
.cg-rmod .plain li { align-items: flex-start; }
.cg-rsess { display: flex; flex-direction: column; gap: 6px; min-width: 0; flex: 1; }
.cg-vidbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px; margin: 4px 0 6px; }
.cg-video { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; padding: 6px 8px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface-2, transparent); }
.cg-video img { width: 96px; height: 54px; object-fit: cover; border-radius: 6px; flex: none; }
.cg-video .cg-vbody { display: flex; flex-direction: column; min-width: 0; flex: 1 1 180px; }
.cg-video .cg-vbody a { font-weight: 600; overflow-wrap: anywhere; }
.cg-video.none { border-style: dashed; }
.video-credit { margin: 6px 0 0; overflow-wrap: anywhere; }
.cg-confirm { margin-top: 14px; }
@media (max-width: 640px) { .cg-row { flex-wrap: wrap; } .cg-refs { flex-basis: 100%; } .cg-mark { margin-left: 0; } }

/* AI course content builder (Course Builder → Content, session pages) */
.tc-head, .tc-complete, .tc-review { margin-bottom: 16px; }
.tc-head h3, .tc-review h3, .tc-complete h3 { margin: 0; display: flex; align-items: center; gap: 6px; }
.tc-review h4 { margin: 16px 0 6px; font-size: .92rem; }
.tc-usage { margin-top: 10px; }
.tc-run { margin-top: 12px; padding: 12px 14px; border: 1px solid var(--border); border-radius: var(--r-sm); background: var(--surface-2); display: grid; gap: 8px; }
.tc-run.on { border-color: color-mix(in srgb, var(--primary) 35%, var(--border)); background: var(--primary-soft); }
.tc-complete .progress { margin: 10px 0 8px; }
/* Course Builder: which AI provider writes, and the panel shown when that provider stops */
.tc-routeline { margin-top: 10px; font-size: .86rem; }
.tc-routeline:empty { display: none; }
.ap-line { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 8px; }
.tc-writers { margin-top: 6px; }
.tc-by { margin: 0; }
.tc-pause { margin-bottom: 16px; display: grid; gap: 10px; border-color: color-mix(in srgb, var(--warning) 45%, var(--border)); background: var(--warning-soft); }
.tc-pause h3 { margin: 0; display: flex; align-items: center; gap: 6px; font-size: 1rem; }
.tc-pause h4 { margin: 4px 0 0; font-size: .92rem; }
.tc-pause p { margin: 0; }
.tc-pause.compact { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 12px; padding: 12px 14px; }
.ap-picker-intro { display: grid; gap: 8px; }
.ap-picker-intro p { margin: 0; }
.ap-list { display: grid; gap: 10px; margin-top: 18px; }
.ap-opt { display: grid; grid-template-columns: 18px minmax(0, 1fr); gap: 12px; align-items: start; padding: 14px 16px; border: 1px solid var(--border); border-radius: var(--r-sm); background: var(--surface); cursor: pointer; }
.ap-opt-body { display: grid; gap: 5px; min-width: 0; overflow-wrap: anywhere; }
.ap-opt-head { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 6px 12px; }
.ap-opt-model { color: var(--text-2); }
.ap-opt-reason { line-height: 1.5; }
.ap-opt:not(.off):hover { border-color: var(--primary); }
.ap-opt:focus-within { outline: 2px solid var(--primary); outline-offset: 2px; }
.ap-opt.off { cursor: not-allowed; background: var(--surface-2); }
.ap-opt.off b { color: var(--muted); }
.ap-opt input { width: 16px; height: 16px; margin: 3px 0 0; accent-color: var(--primary); }
.ap-opt:has(input:checked) { border-color: var(--primary); background: var(--primary-soft); }
.tc-more summary { cursor: pointer; font-weight: 600; font-size: .86rem; }
.tc-more ul { margin: 6px 0 0; padding-left: 20px; }
.tc-rows { display: grid; gap: 2px; }
.tc-row { display: flex; gap: 12px; align-items: flex-start; padding: 12px 0; border-top: 1px solid var(--border); }
.tc-row:first-child { border-top: 0; }
.tc-rbody { flex: 1 1 auto; min-width: 0; display: grid; gap: 4px; }
.tc-rbody p { margin: 0; }
.tc-ractions { display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; flex: 0 1 auto; }
.tc-chips { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.tc-chip { display: inline-flex; align-items: center; gap: 4px; font-size: .74rem; font-weight: 600; padding: 2px 8px; border-radius: 999px; border: 1px solid var(--border); color: var(--muted); background: var(--surface); }
.tc-chip.ok { color: var(--success); border-color: color-mix(in srgb, var(--success) 35%, var(--border)); background: var(--success-soft); }
.tc-chip.bad { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 35%, var(--border)); background: var(--danger-soft); }
.tc-chip.warn { color: var(--warning); border-color: color-mix(in srgb, var(--warning) 35%, var(--border)); background: var(--warning-soft); }
.tc-chip.run { color: var(--primary); border-color: color-mix(in srgb, var(--primary) 35%, var(--border)); background: var(--primary-soft); }
.tc-chip.queued { border-style: dashed; }
.tc-chip .spinner { width: 10px; height: 10px; border-width: 2px; }
.tc-cov { width: 100%; border-collapse: collapse; font-size: .86rem; }
.tc-cov td { padding: 6px 8px; border-top: 1px solid var(--border); vertical-align: top; }
.tc-cov td:first-child { width: 28px; color: var(--muted); font-weight: 700; }
.tc-cov td:last-child { white-space: nowrap; text-align: right; }
.tc-findings { margin: 0; padding-left: 18px; display: grid; gap: 6px; font-size: .9rem; }
.tc-props { display: grid; gap: 10px; }
.tc-prop { padding: 12px 14px; border: 1px solid var(--border); border-radius: var(--r-sm); background: var(--surface-2); }
.tc-prop p { margin: 6px 0 0; }
.tc-prop.dismissed { opacity: .65; }
.tc-card { display: grid; grid-template-columns: minmax(0, 1fr); gap: 4px; }
.tc-view-toolbar { display: grid; gap: 16px; padding-bottom: 20px; margin-bottom: 20px; border-bottom: 1px solid var(--border); }
.tc-view-status { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; }
.tc-view-edits { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.tc-view-edits .btn { min-width: 0; }
@media (max-width: 480px) {
  .tc-view-edits { grid-template-columns: 1fr; gap: 8px; }
  .tc-view-edits .btn { justify-content: flex-start; }
}
.tc-sec { padding: 14px 0; border-top: 1px solid var(--border); }
.tc-sec:first-of-type { border-top: 0; }
.tc-sec > h3 { margin: 0 0 8px; font-size: 1rem; }
.tc-sec ul, .tc-sec ol { margin: 4px 0; padding-left: 22px; }
.tc-sec li + li { margin-top: 4px; }
.tc-sec p { margin: 6px 0; }
.tc-lesson + .tc-lesson, .tc-item + .tc-item { margin-top: 16px; }
.tc-lesson h4, .tc-item h4 { margin: 0 0 6px; font-size: .95rem; }
.tc-example { margin-top: 8px; padding: 10px 12px; border-left: 3px solid var(--accent); background: var(--accent-soft); border-radius: 0 var(--r-sm) var(--r-sm) 0; }
.tc-label { display: block; font-size: .72rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); margin: 8px 0 4px; }
.tc-example > .tc-label:first-child, .tc-blueprint > .tc-label:first-child { margin-top: 0; }
.tc-blueprint { padding: 12px 14px; border: 1px dashed var(--border-strong); border-radius: var(--r-sm); }
.tc-code { margin: 8px 0; border: 1px solid var(--border); border-radius: var(--r-sm); overflow: hidden; background: #0B1220; }
.tc-code-head { display: flex; justify-content: space-between; align-items: center; padding: 4px 6px 4px 12px; font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: #9AA7BA; background: #111A2B; }
.tc-code-head .btn { color: #C9D3E1; }
.tc-code pre { margin: 0; padding: 12px 14px; overflow-x: auto; max-width: 100%; }
.tc-code code { background: none; padding: 0; color: #E3E9F2; font-size: .82rem; line-height: 1.5; white-space: pre; }
.tc-steps li::marker { font-weight: 700; color: var(--primary); }
.tc-time { border-collapse: collapse; font-size: .88rem; margin: 6px 0; }
.tc-time td { padding: 4px 12px 4px 0; border-top: 1px solid var(--border); vertical-align: top; }
.tc-time td:first-child { white-space: nowrap; color: var(--text-2); font-weight: 600; }
.tc-terms { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 8px 16px; margin: 0; }
.tc-terms dt { font-weight: 700; font-size: .88rem; }
.tc-terms dd { margin: 2px 0 0; font-size: .86rem; color: var(--text-2); }
.tc-quiz > li + li { margin-top: 12px; }
.tc-opts { margin: 4px 0; }
.tc-opts li.ok { color: var(--success); font-weight: 600; }
.tc-group { display: grid; gap: 8px; padding: 10px 12px; margin: 0 0 8px; border: 1px solid var(--border); border-radius: var(--r-sm); }
.tc-parts { border: 0; padding: 0; margin: 0; display: grid; gap: 6px; }
.tc-mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .82rem; }
/* Repair with AI: proposal review (current text beside the AI's), history */
.tc-rp { border: 1px solid var(--border); border-radius: var(--r-sm); padding: 10px 12px; margin: 10px 0; background: var(--surface); }
.tc-rp.conflict { border-color: color-mix(in srgb, var(--danger) 45%, var(--border)); }
.tc-rp-head { display: flex; flex-wrap: wrap; gap: 6px 10px; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.tc-rp-head .row { gap: 6px; flex-wrap: wrap; }
.tc-d-choice { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 8px; }
.tc-diff { width: 100%; border-collapse: collapse; table-layout: fixed; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .78rem; line-height: 1.45; }
.tc-diff th { text-align: left; font: 700 .7rem/1.2 var(--font, inherit); text-transform: uppercase; letter-spacing: .05em; color: var(--muted); padding: 4px 8px; border-bottom: 1px solid var(--border); }
.tc-diff td { vertical-align: top; padding: 1px 8px; white-space: pre-wrap; overflow-wrap: anywhere; width: 50%; border-left: 1px solid var(--border); }
.tc-diff td:first-child { border-left: 0; }
.tc-diff td.del { background: var(--danger-soft); color: var(--danger); }
.tc-diff td.add { background: var(--success-soft); color: var(--success); }
.tc-diff tr.gap td { text-align: center; color: var(--muted); font-style: italic; background: var(--surface-2); border-left: 0; }
.tc-diff-wrap { max-height: 340px; overflow: auto; border: 1px solid var(--border); border-radius: var(--r-sm); }
.tc-hist { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.tc-hist li { padding: 8px 10px; border: 1px solid var(--border); border-radius: var(--r-sm); background: var(--surface-2); display: flex; gap: 10px; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; }
.tc-hist .dim { opacity: .65; }
@media (max-width: 640px) { .tc-row { flex-wrap: wrap; } .tc-ractions { justify-content: flex-start; flex-basis: 100%; } .tc-cov td:last-child { white-space: normal; } }

/* Saving status: the chip in the top bar and the banner shown when work is not safely saved */
.sync-chip { font: inherit; font-size: .74rem; font-weight: 600; padding: 4px 10px; border-radius: 999px; border: 1px solid transparent; background: var(--surface-2, var(--surface)); color: var(--muted); cursor: default; white-space: nowrap; }
.sync-chip[hidden] { display: none; }
.sync-success { color: var(--success); background: var(--success-soft); }
.sync-info { color: var(--info); background: var(--info-soft); }
.sync-warning { color: var(--warning); background: var(--warning-soft); }
.sync-danger { color: var(--danger); background: var(--danger-soft); }
.sync-banner { position: sticky; top: 0; z-index: 95; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 16px; padding: 10px 20px; font-size: .88rem; border-bottom: 1px solid var(--border); }
.sync-banner-danger { background: var(--danger-soft); color: var(--text); border-bottom-color: var(--danger); }
.sync-banner-warning { background: var(--warning-soft); color: var(--text); border-bottom-color: var(--warning); }
.sync-btns { display: flex; flex-wrap: wrap; gap: 8px; }
.sync-conf-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.sync-conf { display: flex; flex-wrap: wrap; gap: 8px 14px; justify-content: space-between; align-items: center; padding: 10px 12px; border: 1px solid var(--border); border-radius: var(--r-sm); }
.sync-conf-btns { display: flex; gap: 8px; }
@media print { .sync-banner, .sync-chip { display: none !important; } }

/* Settings: grouped forms, unsaved-changes note, YouTube card, feature map on phones */
.form-section { margin-top: 10px; padding-top: 16px; border-top: 1px solid var(--border); }
.form-grid > .form-section:first-child { margin-top: 0; padding-top: 0; border-top: 0; }
.form-section h3 { margin: 0 0 2px; font-size: 1rem; }
.form-section .help { margin: 0; }
.form-foot { flex-wrap: wrap; align-items: center; }
.dirty-note { display: inline-flex; align-items: center; gap: 6px; margin-right: auto; color: var(--warning); font-size: .85rem; font-weight: 600; }
.form-foot > .grow { margin-right: auto; }
.switch.nowrap { white-space: nowrap; }
.field.is-off { opacity: .55; }
.yt-row { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 10px 12px; margin-top: 12px; }
.yt-row > .field { flex: 1 1 280px; margin: 0; }
.yt-row > .row { padding-bottom: 2px; }
.yt-help { margin-top: 12px; }
.yt-help summary { cursor: pointer; color: var(--primary); font-weight: 600; width: fit-content; }
.yt-help ol { margin: 8px 0 6px; padding-left: 20px; display: grid; gap: 4px; }
@media (max-width: 720px) {
  .cap-table td[data-label] { align-items: center; }
  .cap-table td[data-label] > .input { flex: 1 1 auto; min-width: 0; max-width: 70%; text-align: left; }
  .cap-table td.td-primary { padding-top: 4px; }
}
.weights-share { grid-column: 1 / -1; margin: 0 0 10px; padding: 10px 12px; border-radius: 10px; background: var(--surface-2); color: var(--text); }