/* =========================================================================
   Teacher Grader — design system (self-contained, no framework, no build)
   Light + dark themes via CSS custom properties.
   ========================================================================= */

/* ---- Tokens: light (default) ---------------------------------------- */
:root {
  --bg: #f5f7fa;
  --bg-grad: radial-gradient(1200px 600px at 100% -10%, #eef2fb 0%, transparent 55%);
  --surface: #ffffff;
  --surface-2: #f6f8fb;
  --surface-3: #eef2f7;
  --border: #e3e8ef;
  --border-soft: #eef1f6;
  --border-strong: #d3dbe6;

  --text: #1a2333;
  --text-strong: #0c1524;
  --muted: #62708a;
  --faint: #8a96a9;

  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --accent-contrast: #ffffff;
  --accent-soft: #eef0fe;
  --accent-soft-text: #4338ca;
  --accent-ring: rgba(79, 70, 229, 0.35);

  --success: #067647;
  --success-soft: #ecfdf3;
  --success-border: #abefc6;
  --danger: #d92d20;
  --danger-soft: #fef3f2;
  --danger-border: #fecdca;
  --warning: #b54708;
  --warning-soft: #fffaeb;
  --warning-border: #fedf89;
  --info: #175cd3;
  --info-soft: #eff4ff;
  --info-border: #b2ccff;

  --radius: 12px;
  --radius-sm: 8px;
  --radius-xs: 6px;
  --radius-pill: 999px;

  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 6px 20px rgba(15, 23, 42, 0.10), 0 2px 6px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 20px 48px rgba(13, 20, 36, 0.20);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu,
    "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-mono: "SFMono-Regular", ui-monospace, "JetBrains Mono", Menlo,
    Consolas, "Liberation Mono", monospace;

  --sidebar-w: 248px;
  --topbar-h: 68px;

  color-scheme: light;
}

/* ---- Tokens: dark --------------------------------------------------- */
:root[data-theme="dark"] {
  --bg: #0c1017;
  --bg-grad: radial-gradient(1200px 600px at 100% -10%, #141b2b 0%, transparent 55%);
  --surface: #141a23;
  --surface-2: #1a212c;
  --surface-3: #212a37;
  --border: #262f3d;
  --border-soft: #1e2530;
  --border-strong: #313c4d;

  --text: #d9e0ea;
  --text-strong: #f2f6fb;
  --muted: #8b98ab;
  --faint: #667186;

  --accent: #818cf8;
  --accent-hover: #a5b0ff;
  --accent-contrast: #0c1017;
  --accent-soft: rgba(129, 140, 248, 0.15);
  --accent-soft-text: #a9b3ff;
  --accent-ring: rgba(129, 140, 248, 0.45);

  --success: #4ade80;
  --success-soft: rgba(45, 175, 96, 0.16);
  --success-border: rgba(74, 222, 128, 0.30);
  --danger: #f87171;
  --danger-soft: rgba(248, 81, 73, 0.15);
  --danger-border: rgba(248, 113, 113, 0.32);
  --warning: #fbbf24;
  --warning-soft: rgba(210, 153, 34, 0.16);
  --warning-border: rgba(251, 191, 36, 0.30);
  --info: #7ca8ff;
  --info-soft: rgba(124, 168, 255, 0.14);
  --info-border: rgba(124, 168, 255, 0.32);

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 24px 56px rgba(0, 0, 0, 0.6);

  color-scheme: dark;
}

/* System preference when no explicit choice stored */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="dark"]) {
    --bg: #0c1017;
    --bg-grad: radial-gradient(1200px 600px at 100% -10%, #141b2b 0%, transparent 55%);
    --surface: #141a23;
    --surface-2: #1a212c;
    --surface-3: #212a37;
    --border: #262f3d;
    --border-soft: #1e2530;
    --border-strong: #313c4d;
    --text: #d9e0ea;
    --text-strong: #f2f6fb;
    --muted: #8b98ab;
    --faint: #667186;
    --accent: #818cf8;
    --accent-hover: #a5b0ff;
    --accent-contrast: #0c1017;
    --accent-soft: rgba(129, 140, 248, 0.15);
    --accent-soft-text: #a9b3ff;
    --accent-ring: rgba(129, 140, 248, 0.45);
    --success: #4ade80;
    --success-soft: rgba(45, 175, 96, 0.16);
    --success-border: rgba(74, 222, 128, 0.30);
    --danger: #f87171;
    --danger-soft: rgba(248, 81, 73, 0.15);
    --danger-border: rgba(248, 113, 113, 0.32);
    --warning: #fbbf24;
    --warning-soft: rgba(210, 153, 34, 0.16);
    --warning-border: rgba(251, 191, 36, 0.30);
    --info: #7ca8ff;
    --info-soft: rgba(124, 168, 255, 0.14);
    --info-border: rgba(124, 168, 255, 0.32);
    color-scheme: dark;
  }
}

/* ---- Reset ---------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  background-image: var(--bg-grad);
  background-attachment: fixed;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  margin: 0;
  color: var(--text-strong);
  font-weight: 700;
  line-height: 1.25;
}

p {
  margin: 0;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
  text-underline-offset: 2px;
}

code {
  padding: 0.1em 0.4em;
  border-radius: var(--radius-xs);
  background: var(--surface-3);
  color: var(--text-strong);
  font-family: var(--font-mono);
  font-size: 0.86em;
}

small {
  font-size: 0.82rem;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--radius-xs);
}

svg.icon {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  stroke: currentColor;
  stroke-width: 1.9;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ---- App shell ------------------------------------------------------ */
.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  display: flex;
  flex-direction: column;
  height: 100vh;
  padding: 16px 14px;
  border-right: 1px solid var(--border);
  background: var(--surface);
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 6px 8px 16px;
  color: var(--text-strong);
}
.brand:hover {
  text-decoration: none;
  color: var(--text-strong);
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #7c3aed);
  color: #fff;
  box-shadow: var(--shadow-sm), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}
.brand-mark svg { width: 20px; height: 20px; stroke: #fff; }
.brand strong { display: block; font-size: 0.98rem; letter-spacing: -0.01em; }
.brand small { display: block; color: var(--muted); font-size: 0.76rem; }

.nav-label {
  margin: 6px 0 6px;
  padding: 0 10px;
  color: var(--faint);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.side-nav {
  display: grid;
  gap: 2px;
}
.side-nav a {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 9px 11px;
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 550;
}
.side-nav a:hover {
  background: var(--surface-2);
  color: var(--text-strong);
  text-decoration: none;
}
.side-nav a svg { color: var(--faint); }
.side-nav a[aria-current="page"] {
  background: var(--accent-soft);
  color: var(--accent-soft-text);
  font-weight: 650;
}
.side-nav a[aria-current="page"] svg { color: var(--accent); }

.sidebar-foot {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: auto;
  padding: 11px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
}
.sidebar-foot .dot {
  width: 8px; height: 8px; flex: 0 0 auto;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 3px var(--success-soft);
}
.sidebar-foot small { display: block; color: var(--faint); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.05em; font-weight: 700; }
.sidebar-foot strong { display: block; color: var(--text-strong); font-size: 0.86rem; }

.workspace { min-width: 0; display: flex; flex-direction: column; }

/* ---- Topbar --------------------------------------------------------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: var(--topbar-h);
  padding: 12px 28px;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 85%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.topbar .eyebrow {
  color: var(--faint);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.topbar h1 { font-size: 1.28rem; letter-spacing: -0.02em; }
.topbar-actions { display: flex; align-items: center; gap: 10px; }

.icon-btn {
  display: grid;
  place-items: center;
  width: 38px; height: 38px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
}
.icon-btn:hover { background: var(--surface-2); color: var(--text-strong); border-color: var(--border-strong); }
.icon-btn .icon-moon { display: none; }
:root[data-theme="dark"] .icon-btn .icon-sun { display: none; }
:root[data-theme="dark"] .icon-btn .icon-moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .icon-btn .icon-sun { display: none; }
  :root:not([data-theme="light"]) .icon-btn .icon-moon { display: block; }
}

.content {
  display: grid;
  gap: 18px;
  align-content: start;
  padding: 24px 28px 56px;
}

/* ---- Live status pill (SSE) ---------------------------------------- */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: var(--surface);
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 650;
}
.status-pill::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--faint);
}
.status-pill.status-live {
  border-color: var(--success-border);
  background: var(--success-soft);
  color: var(--success);
}
.status-pill.status-live::before { background: var(--success); animation: pulse 1.6s ease-in-out infinite; }
.status-pill.status-error {
  border-color: var(--warning-border);
  background: var(--warning-soft);
  color: var(--warning);
}
.status-pill.status-error::before { background: var(--warning); }
@keyframes pulse { 0%,100% { opacity: 1; box-shadow: 0 0 0 0 currentColor; } 50% { opacity: .55; box-shadow: 0 0 0 3px transparent; } }

/* ---- Layout grids --------------------------------------------------- */
.panel-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.dashboard-grid { grid-template-columns: minmax(0, 1fr); }
.panel-wide { grid-column: 1 / -1; }

/* ---- Panel / card --------------------------------------------------- */
.panel {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}
.panel-action { border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 18px;
  border-bottom: 1px solid var(--border-soft);
}
.panel-header h2, .section-title {
  font-size: 0.98rem;
  letter-spacing: -0.01em;
}
.panel-header p { margin-top: 3px; color: var(--muted); font-size: 0.84rem; }
.panel-body { padding: 18px; }
.panel-body.scroll-x { overflow-x: auto; }
footer.panel-body { border-top: 1px solid var(--border-soft); background: var(--surface-2); }

.page-intro { max-width: 780px; color: var(--muted); }
.eyebrow { color: var(--faint); font-size: 0.68rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; }
.mini-label { color: var(--faint); font-size: 0.68rem; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; }

/* ---- Buttons (own system + Pico-class compatibility) --------------- */
button,
.btn,
[role="button"],
input[type="submit"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 8px 14px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: var(--accent-contrast);
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  text-decoration: none;
  transition: background .15s, border-color .15s, color .15s, box-shadow .15s, transform .05s;
  box-shadow: var(--shadow-xs);
}
button:hover,
.btn:hover,
[role="button"]:hover,
input[type="submit"]:hover {
  background: var(--accent-hover);
  color: var(--accent-contrast);
  text-decoration: none;
}
button:active, .btn:active, [role="button"]:active { transform: translateY(1px); }
button:disabled,
button[disabled],
.btn:disabled,
[role="button"][disabled] {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

/* secondary / outline / contrast — map Pico class names to the system */
.secondary,
button.secondary,
[role="button"].secondary {
  background: var(--surface);
  border-color: var(--border-strong);
  color: var(--text-strong);
}
.secondary:hover,
button.secondary:hover,
[role="button"].secondary:hover {
  background: var(--surface-2);
  border-color: var(--faint);
  color: var(--text-strong);
}
.outline,
button.outline,
[role="button"].outline {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text);
  box-shadow: none;
}
.outline:hover,
button.outline:hover,
[role="button"].outline:hover {
  background: var(--surface-2);
  border-color: var(--faint);
  color: var(--text-strong);
}
.contrast,
button.contrast,
[role="button"].contrast {
  background: var(--text-strong);
  color: var(--surface);
}
.contrast.outline,
button.contrast.outline {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text-strong);
}
.btn-primary { background: var(--accent); color: var(--accent-contrast); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: color-mix(in srgb, var(--danger) 85%, #000); color: #fff; }
.btn-sm { padding: 5px 11px; font-size: 0.82rem; }
.btn-block { width: 100%; }

/* ---- Toolbars ------------------------------------------------------- */
.toolbar,
.table-actions,
.publish-bar,
.form-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.table-actions { margin-top: 16px; }
.publish-bar { justify-content: space-between; }

.bulk-action-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
}
.bulk-action-bar .toolbar { margin-left: auto; }
.bulk-action-bar .helper { color: var(--muted); font-size: 0.82rem; }

.check-control {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  color: var(--text);
  font-size: 0.86rem;
  font-weight: 600;
  cursor: pointer;
}

/* ---- Tabs ----------------------------------------------------------- */
.tabs {
  display: inline-flex;
  gap: 3px;
  padding: 4px;
  margin: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  box-shadow: var(--shadow-xs);
}
.tabs a {
  padding: 6px 14px;
  border-radius: var(--radius-xs);
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 600;
}
.tabs a:hover { background: var(--surface-2); color: var(--text-strong); text-decoration: none; }
.tabs a[aria-current="page"] { background: var(--accent-soft); color: var(--accent-soft-text); }

/* ---- Tables --------------------------------------------------------- */
table, .data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 0.9rem;
}
thead th {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-align: left;
  white-space: nowrap;
}
tbody td { padding: 12px 14px; vertical-align: middle; }
tbody tr + tr td { border-top: 1px solid var(--border-soft); }
tbody tr { transition: background .12s; }
tbody tr:hover { background: var(--surface-2); }
.numeric { font-variant-numeric: tabular-nums; text-align: right; white-space: nowrap; }
.action-col { width: 1%; text-align: right; white-space: nowrap; }
.row-link { color: var(--text-strong); font-weight: 650; }
.row-link:hover { color: var(--accent); }
.row-meta { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 5px; }
.row-meta span {
  display: inline-flex;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  background: var(--surface-3);
  color: var(--muted);
  font-size: 0.71rem;
  font-weight: 600;
}

input[type="checkbox"] {
  width: 16px; height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
}

/* ---- Badges / chips / statuses ------------------------------------- */
.badge, .chip, .flag, .status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: var(--radius-pill);
  padding: 3px 10px;
  font-size: 0.72rem;
  font-weight: 650;
  line-height: 1.3;
  white-space: nowrap;
}
.badge { background: var(--accent-soft); color: var(--accent-soft-text); }
.badge-neutral, .chip { background: var(--surface-3); color: var(--muted); }
.chip { margin: 2px 4px 2px 0; }

.status-ok { color: var(--success); font-weight: 650; }
.status-bad { color: var(--danger); font-weight: 650; }
.status-neutral { color: var(--muted); }
.helper { color: var(--muted); font-size: 0.84rem; }

.status-badge.success, .status-badge.status-live { background: var(--success-soft); color: var(--success); }
.status-badge.info { background: var(--info-soft); color: var(--info); }
.status-badge.warning { background: var(--warning-soft); color: var(--warning); }
.status-badge.error { background: var(--danger-soft); color: var(--danger); }
.status-badge.muted { background: var(--surface-3); color: var(--muted); }

.flag,
.flag.flag-alert {
  border: 1px solid var(--warning-border);
  background: var(--warning-soft);
  color: var(--warning);
}
.flag.flag-info {
  border-color: var(--info-border);
  background: var(--info-soft);
  color: var(--info);
}
.flag.flag-positive {
  border-color: var(--success-border);
  background: var(--success-soft);
  color: var(--success);
}
.flag-list { display: flex; flex-wrap: wrap; gap: 6px; }

.confidence {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 66px;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-size: 0.72rem;
  font-weight: 700;
}
.confidence-high { background: var(--success-soft); color: var(--success); }
.confidence-medium { background: var(--warning-soft); color: var(--warning); }
.confidence-low { background: var(--danger-soft); color: var(--danger); }
.confidence-unknown { background: var(--surface-3); color: var(--muted); }

/* ---- Course chips --------------------------------------------------- */
.course-chip-list { display: flex; flex-wrap: wrap; gap: 7px; max-width: 560px; }
.course-chip {
  display: inline-grid;
  gap: 1px;
  max-width: 220px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
}
.course-chip strong { overflow: hidden; color: var(--text-strong); font-size: 0.78rem; text-overflow: ellipsis; white-space: nowrap; }
.course-chip small { color: var(--muted); font-size: 0.68rem; }
.course-chip.more { display: inline-flex; align-items: center; color: var(--muted); font-weight: 700; }

/* ---- Course disclosure (monitoring table cell) --------------------- */
.course-disclosure { display: inline-block; }
.course-disclosure > summary {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  cursor: pointer;
  list-style: none;
  user-select: none;
}
.course-disclosure > summary::-webkit-details-marker { display: none; }
.course-disclosure > summary .badge-neutral { transition: background .12s; }
.course-disclosure > summary:hover .badge-neutral { background: var(--accent-soft); color: var(--accent-soft-text); }
.course-disclosure > summary .chev {
  width: 14px; height: 14px; color: var(--faint);
  transition: transform .15s;
}
.course-disclosure[open] > summary .chev { transform: rotate(180deg); }
.course-disclosure[open] > summary .lead { display: none; }
.course-disclosure .lead { color: var(--muted); font-size: 0.82rem; max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.course-list {
  display: grid;
  gap: 4px;
  margin: 10px 0 2px;
  padding: 0;
  list-style: none;
  max-width: 460px;
}
.course-list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 10px;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-xs);
  background: var(--surface-2);
}
.course-list li strong { color: var(--text-strong); font-size: 0.82rem; font-weight: 600; }
.course-list li small { color: var(--faint); font-family: var(--font-mono); font-size: 0.72rem; white-space: nowrap; }

/* ---- Course picker (settings) -------------------------------------- */
.course-picker { display: grid; gap: 10px; }
.course-picker-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.course-picker-list {
  display: grid;
  gap: 6px;
  max-height: 260px;
  overflow-y: auto;
  padding: 4px;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
}
.course-check {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 9px 11px;
  border: 1px solid transparent;
  border-radius: var(--radius-xs);
  background: var(--surface);
  cursor: pointer;
  margin: 0;
  transition: border-color .12s, background .12s;
}
.course-check:hover { border-color: var(--border-strong); }
.course-check input:checked ~ .course-check-body strong { color: var(--text-strong); }
.course-check-body { display: grid; gap: 1px; min-width: 0; }
.course-check-body strong { color: var(--text); font-size: 0.86rem; font-weight: 600; text-transform: none; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.course-check-body small { color: var(--faint); font-family: var(--font-mono); font-size: 0.72rem; }
.course-check .course-tag { margin-left: auto; }
.course-picker-empty { padding: 14px; text-align: center; color: var(--muted); font-size: 0.84rem; }
.course-add-row { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 8px; align-items: center; }
.course-picker.all-on .course-picker-list,
.course-picker.all-on .course-add-row { display: none; }

/* ---- Provider cards (settings) ------------------------------------- */
.provider-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
}
.provider-card > form:first-child { padding: 14px; display: grid; gap: 14px; }
.provider-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.provider-title { display: flex; align-items: center; gap: 8px; }
.provider-title strong { color: var(--text-strong); font-size: 0.98rem; }

/* ---- Grading instructions selectors -------------------------------- */
.grading-block {
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
}
.focus-grid { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.focus-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 7px 12px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-pill);
  background: var(--surface);
  color: var(--text);
  font-size: 0.82rem;
  font-weight: 550;
  cursor: pointer;
  transition: border-color .12s, background .12s, color .12s;
}
.focus-chip:hover { border-color: var(--faint); }
.focus-chip input { width: 15px; height: 15px; }
.focus-chip:has(input:checked) {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  background: var(--accent-soft);
  color: var(--accent-soft-text);
}
.instr-preview-wrap { margin-top: 16px; }
.instr-preview {
  margin-top: 6px;
  min-height: 44px;
}
.instr-preview-text {
  margin: 0;
  padding: 12px 14px;
  border: 1px solid var(--info-border);
  border-radius: var(--radius-sm);
  background: var(--info-soft);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 0.84rem;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
}
.instr-preview-empty {
  margin: 0;
  padding: 12px 14px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-size: 0.84rem;
}
.instr-preview-forum { margin-top: 10px; }
.instr-preview-forum .mini-label { display: block; margin-bottom: 4px; }

/* ---- Institution tabs (settings) ----------------------------------- */
.inst-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 3px;
  width: fit-content;
  max-width: 100%;
  margin-bottom: 18px;
  padding: 4px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  box-shadow: var(--shadow-xs);
  overflow-x: auto;
}
.inst-tab {
  padding: 7px 15px;
  border: 0;
  border-radius: var(--radius-xs);
  background: transparent;
  box-shadow: none;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
}
.inst-tab:hover { background: var(--surface-2); color: var(--text-strong); }
.inst-tab.active { background: var(--accent-soft); color: var(--accent-soft-text); }
.inst-panel { display: none; }
.inst-panel.active { display: block; }

/* ---- Grouped config sections (settings) ---------------------------- */
.config-group {
  margin-bottom: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  overflow: hidden;
}
.config-group > summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  cursor: pointer;
  list-style: none;
  background: var(--surface-2);
  color: var(--text-strong);
  font-size: 0.92rem;
  font-weight: 650;
}
.config-group > summary::-webkit-details-marker { display: none; }
.config-group > summary svg { color: var(--muted); }
.config-group > summary::after {
  content: "";
  margin-left: auto;
  width: 8px; height: 8px;
  border-right: 2px solid var(--faint);
  border-bottom: 2px solid var(--faint);
  transform: rotate(45deg);
  transition: transform .15s;
}
.config-group[open] > summary::after { transform: rotate(225deg); }
.config-group[open] > summary { border-bottom: 1px solid var(--border-soft); }
.config-group-body { padding: 16px; display: grid; gap: 14px; }
.config-group-body.grading-block { border: 0; background: transparent; }

/* credential box + forum override */
.cred-box {
  padding: 12px;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
}
.forum-override {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  overflow: hidden;
}
.forum-override > summary {
  padding: 11px 14px;
  cursor: pointer;
  list-style: none;
  background: var(--surface-2);
}
.forum-override > summary::-webkit-details-marker { display: none; }
.forum-override-body { padding: 14px; display: grid; gap: 6px; }
.provider-key { padding: 12px 14px !important; border-top: 1px solid var(--border-soft); background: var(--surface); }
.provider-key label { color: var(--text-strong); font-size: 0.82rem; font-weight: 600; }

/* ---- Notices / empty states / alert strip --------------------------- */
.notice {
  display: flex;
  gap: 10px;
  padding: 13px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
}
.notice.success { border-color: var(--success-border); background: var(--success-soft); color: var(--success); }
.notice.error { border-color: var(--danger-border); background: var(--danger-soft); color: var(--danger); }

.empty-state {
  padding: 22px 18px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  color: var(--muted);
  text-align: center;
}
.empty-state.compact { padding: 14px; text-align: left; }

.alert-strip {
  display: grid;
  gap: 8px;
  margin-bottom: 14px;
  padding: 12px 14px;
  border: 1px solid var(--warning-border);
  border-radius: var(--radius-sm);
  background: var(--warning-soft);
}

/* ---- Stat / summary grids ------------------------------------------ */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}
.stat-card {
  display: grid;
  gap: 4px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-xs);
}
.stat-card small { color: var(--muted); font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; }
.stat-card strong { color: var(--text-strong); font-size: 1.5rem; font-weight: 750; letter-spacing: -0.02em; }
.stat-card.accent { border-color: color-mix(in srgb, var(--accent) 35%, var(--border)); }
.stat-card.accent strong { color: var(--accent); }
.stat-icon { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 9px; background: var(--accent-soft); color: var(--accent); }

.run-summary-grid, .review-summary-grid, .context-strip {
  display: grid;
  gap: 10px;
}
.run-summary-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.review-summary-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); margin-top: 12px; }
.context-strip { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.run-summary-grid span, .review-summary-grid span, .context-strip span {
  display: grid;
  gap: 3px;
  min-width: 0;
  padding: 11px 13px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
}
.run-summary-grid strong, .review-summary-grid strong { color: var(--text-strong); font-size: 1.15rem; font-weight: 700; }
.run-summary-grid small, .review-summary-grid small, .context-strip strong {
  color: var(--muted); font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.03em;
}
.context-strip span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.context-strip strong { display: block; }

.summary-success { border-color: var(--success-border); background: var(--success-soft); }
.summary-warning { border-color: var(--warning-border); background: var(--warning-soft); }
.summary-info { border-color: var(--info-border); background: var(--info-soft); }

/* ---- Dashboard: funnel / attention / health / cost ----------------- */
.funnel { display: flex; align-items: stretch; flex-wrap: wrap; gap: 10px; }
.funnel-stage {
  flex: 1 1 0;
  min-width: 120px;
  display: grid;
  gap: 3px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-2);
  text-align: center;
}
.funnel-stage strong { color: var(--text-strong); font-size: 1.6rem; font-weight: 750; letter-spacing: -0.02em; }
.funnel-stage small { color: var(--muted); font-size: 0.74rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.03em; }
.funnel-stage.graded { border-color: var(--info-border); background: var(--info-soft); }
.funnel-stage.graded strong { color: var(--info); }
.funnel-stage.approved { border-color: var(--warning-border); background: var(--warning-soft); }
.funnel-stage.approved strong { color: var(--warning); }
.funnel-stage.published { border-color: var(--success-border); background: var(--success-soft); }
.funnel-stage.published strong { color: var(--success); }
.funnel-arrow { align-self: center; width: 20px; height: 20px; color: var(--faint); transform: rotate(-90deg); flex: 0 0 auto; }

.attention-list, .health-list { display: grid; gap: 2px; margin: 0; padding: 0; list-style: none; }
.attention-list li { display: grid; gap: 6px; padding: 11px 4px; border-bottom: 1px solid var(--border-soft); }
.attention-list li:last-child { border-bottom: none; }
.attention-title { font-size: 0.92rem; }
.attention-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }

.health-list li { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 4px; border-bottom: 1px solid var(--border-soft); }
.health-list li:last-child { border-bottom: none; }
.health-list strong { color: var(--text-strong); font-size: 0.9rem; }
.health-status { display: flex; flex-direction: column; align-items: flex-end; gap: 4px; text-align: right; }

.cost-bars { display: grid; gap: 12px; }
.cost-row { display: grid; grid-template-columns: minmax(120px, 0.4fr) minmax(0, 1fr) auto; align-items: center; gap: 12px; }
.cost-name { color: var(--text-strong); font-size: 0.86rem; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cost-track { height: 10px; border-radius: var(--radius-pill); background: var(--surface-3); overflow: hidden; }
.cost-fill { height: 100%; border-radius: var(--radius-pill); background: linear-gradient(90deg, var(--accent), #7c3aed); min-width: 3px; }
.cost-value { color: var(--text-strong); font-size: 0.86rem; font-weight: 600; }
@media (max-width: 620px) {
  .cost-row { grid-template-columns: 1fr auto; }
  .cost-track { display: none; }
}

/* ---- Metric chips (runs) ------------------------------------------- */
.metric-list { display: flex; flex-wrap: wrap; gap: 6px; }
.metric-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: var(--surface-3);
  color: var(--muted);
  font-size: 0.73rem;
  font-weight: 600;
}
.metric-chip strong { color: var(--text-strong); }
.metric-chip.success, .metric-chip.done { background: var(--success-soft); color: var(--success); }
.metric-chip.error, .metric-chip.failed { background: var(--danger-soft); color: var(--danger); }
.metric-chip.grading, .metric-chip.downloading, .metric-chip.extracting, .metric-chip.writing_draft {
  background: var(--accent-soft); color: var(--accent-soft-text);
}

/* ---- Progress ------------------------------------------------------- */
progress {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 8px;
  border: none;
  border-radius: var(--radius-pill);
  background: var(--surface-3);
  overflow: hidden;
}
progress::-webkit-progress-bar { background: var(--surface-3); border-radius: var(--radius-pill); }
progress::-webkit-progress-value { background: var(--accent); border-radius: var(--radius-pill); }
progress::-moz-progress-bar { background: var(--accent); border-radius: var(--radius-pill); }
progress:indeterminate { background: linear-gradient(90deg, var(--surface-3) 30%, var(--accent-soft) 50%, var(--surface-3) 70%); background-size: 200% 100%; animation: indet 1.1s linear infinite; }
@keyframes indet { from { background-position: 200% 0; } to { background-position: -200% 0; } }
.progress-cell { display: grid; gap: 6px; min-width: 170px; }
.run-progress { width: 60px; margin: 0 0 0 8px; }

/* htmx indicator */
.htmx-indicator { opacity: 0; transition: opacity .2s; }
.htmx-request .htmx-indicator, .htmx-request.htmx-indicator { opacity: 1; }

/* Spinner + busy button state (feedback for slow live-LMS calls) */
.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
button.htmx-request { pointer-events: none; opacity: 0.9; }
.btn-busy { display: none; }
button.htmx-request .btn-idle { display: none; }
button.htmx-request .btn-busy { display: inline-flex; align-items: center; gap: 7px; }

/* ---- Runs stack ----------------------------------------------------- */
.runs-stack { display: grid; gap: 20px; }
.run-section { display: grid; gap: 10px; }
.run-section-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.run-section-header h3 { font-size: 0.9rem; }
.run-filter-bar {
  display: grid;
  grid-template-columns: minmax(160px, 1fr) minmax(180px, 1fr) minmax(130px, 0.5fr) auto auto;
  align-items: end;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
}
.run-filter-bar label { margin: 0; color: var(--muted); font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.03em; }
.fail-reason {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  margin-top: 6px;
  padding: 6px 9px;
  border: 1px solid var(--warning-border);
  border-radius: var(--radius-xs);
  background: var(--warning-soft);
  color: var(--warning);
  font-size: 0.76rem;
  line-height: 1.35;
  max-width: 460px;
}
.fail-reason svg { width: 14px; height: 14px; flex: 0 0 auto; margin-top: 1px; }
.run-filter-bar input, .run-filter-bar select { margin: 5px 0 0; }
.pagination-bar { display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 8px; }

/* ---- Event log ------------------------------------------------------ */
#eventlog {
  max-height: 360px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
}
#eventlog .status-neutral { padding: 16px; }
.event-row {
  display: grid;
  gap: 6px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--border-soft);
}
.event-row:last-child { border-bottom: none; }
.event-row > div:first-child { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.event-row strong { color: var(--text-strong); font-size: 0.84rem; }
.event-row small, .event-row p { color: var(--muted); font-size: 0.76rem; }
.event-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.event-tags span {
  max-width: 100%;
  overflow: hidden;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  background: var(--surface-3);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---- Forms ---------------------------------------------------------- */
label { display: block; }
input:not([type="checkbox"]):not([type="submit"]),
select,
textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font-family: inherit;
  font-size: 0.9rem;
  line-height: 1.4;
  transition: border-color .15s, box-shadow .15s;
}
textarea { resize: vertical; min-height: 80px; }
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ring);
}
input::placeholder, textarea::placeholder { color: var(--faint); }
select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2362708a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 34px;
}

.breadcrumb ul { display: flex; gap: 8px; margin: 0 0 4px; padding: 0; list-style: none; color: var(--muted); font-size: 0.86rem; }
.breadcrumb li + li::before { content: "/"; margin-right: 8px; color: var(--faint); }

.meta-row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 8px; }

/* ---- Review layout -------------------------------------------------- */
.review-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(380px, 0.9fr);
  align-items: start;
  gap: 18px;
}
.review-layout > .panel:last-child { position: sticky; top: calc(var(--topbar-h) + 24px); }

pre.submission-preview {
  max-height: 70vh;
  overflow-y: auto;
  margin: 0;
  padding: 15px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}
.submission-panel > p:first-child, .grade-panel > *:first-child { margin-top: 0; }

.grade-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 14px;
}
.grade-summary > div {
  display: grid;
  gap: 5px;
  min-width: 0;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
}
.grade-summary strong { overflow: hidden; color: var(--text-strong); font-size: 1.15rem; font-weight: 700; text-overflow: ellipsis; white-space: nowrap; }

.grade-panel form { margin-bottom: 14px; }
.grade-panel label { margin-bottom: 12px; color: var(--text-strong); font-size: 0.86rem; font-weight: 600; }
.grade-panel label input, .grade-panel label textarea { margin-top: 6px; }
.grade-panel details { margin-bottom: 14px; }
.grade-panel details summary { cursor: pointer; color: var(--text-strong); font-weight: 600; font-size: 0.88rem; padding: 4px 0; }
.grade-panel details ul { margin: 8px 0 0; padding-left: 18px; color: var(--text); }
.grade-panel details li { margin-bottom: 6px; }

/* ---- Prompt panel --------------------------------------------------- */
.prompt-panel {
  margin-bottom: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  overflow: hidden;
}
.prompt-panel summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 14px;
  cursor: pointer;
  color: var(--text-strong);
  font-size: 0.88rem;
  font-weight: 650;
  list-style: none;
}
.prompt-panel summary::-webkit-details-marker { display: none; }
.prompt-panel summary small { color: var(--muted); font-weight: 600; }
.prompt-panel[open] summary { border-bottom: 1px solid var(--border-soft); }
.prompt-meta { display: flex; flex-wrap: wrap; gap: 8px; padding: 12px 14px 0; }
.prompt-meta span { padding: 6px 10px; border: 1px solid var(--border-soft); border-radius: var(--radius-xs); background: var(--surface); font-size: 0.78rem; }
.prompt-meta strong { display: block; color: var(--muted); font-size: 0.66rem; text-transform: uppercase; letter-spacing: 0.03em; }
.prompt-grid { display: grid; gap: 12px; padding: 14px; }
.prompt-grid h3 { margin-bottom: 6px; color: var(--muted); font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.03em; }
.prompt-grid pre {
  max-height: 260px;
  margin: 0;
  overflow: auto;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--surface);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.5;
  white-space: pre-wrap;
}

/* ---- Settings ------------------------------------------------------- */
.settings-stack { display: grid; gap: 18px; }
.settings-form { display: grid; gap: 16px; }
.settings-form label { color: var(--text-strong); font-size: 0.82rem; font-weight: 600; }
.settings-form label > input, .settings-form label > select, .settings-form label > textarea { margin-top: 6px; }
.settings-form small { display: block; margin-top: 5px; color: var(--muted); font-size: 0.78rem; font-weight: 400; }
.settings-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.settings-toggles {
  display: grid;
  gap: 4px;
  padding: 8px 12px;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
}
.settings-toggles .toggle-row {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 38px;
  margin: 0;
  cursor: pointer;
  color: var(--text);
  font-size: 0.88rem;
  font-weight: 550;
}
.settings-toggles input[type="checkbox"] { width: 17px; height: 17px; }

.credential-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: start;
  margin-top: 14px;
}
.step-list { display: grid; gap: 10px; margin: 0; padding-left: 20px; color: var(--text); }
.step-list li { padding-left: 4px; }
.external-link { font-weight: 600; }

/* ---- Toasts --------------------------------------------------------- */
.toast-host {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: min(380px, calc(100vw - 40px));
  pointer-events: none;
}
.toast {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  padding: 13px 15px;
  border: 1px solid var(--border);
  border-left-width: 3px;
  border-radius: var(--radius-sm);
  background: var(--surface);
  box-shadow: var(--shadow-md);
  color: var(--text);
  pointer-events: auto;
  animation: toast-in .22s cubic-bezier(.2,.8,.2,1);
}
.toast.leaving { animation: toast-out .18s ease forwards; }
.toast .icon { margin-top: 1px; }
.toast-title { font-weight: 650; font-size: 0.88rem; color: var(--text-strong); }
.toast-msg { font-size: 0.82rem; color: var(--muted); margin-top: 2px; }
.toast.success { border-left-color: var(--success); }
.toast.success .icon { color: var(--success); }
.toast.error { border-left-color: var(--danger); }
.toast.error .icon { color: var(--danger); }
.toast.info { border-left-color: var(--accent); }
.toast.info .icon { color: var(--accent); }
.toast-close { margin-left: auto; padding: 0; width: 22px; height: 22px; border: none; background: transparent; color: var(--faint); box-shadow: none; cursor: pointer; }
.toast-close:hover { background: var(--surface-2); color: var(--text); }
@keyframes toast-in { from { opacity: 0; transform: translateX(16px); } to { opacity: 1; transform: none; } }
@keyframes toast-out { to { opacity: 0; transform: translateX(16px); } }

/* ---- Confirm modal -------------------------------------------------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 210;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(9, 14, 24, 0.55);
  backdrop-filter: blur(2px);
  animation: fade-in .15s ease;
}
.modal-card {
  width: min(440px, 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: modal-in .2s cubic-bezier(.2,.8,.2,1);
}
.modal-body { display: flex; gap: 14px; padding: 20px; }
.modal-icon { display: grid; place-items: center; width: 40px; height: 40px; flex: 0 0 auto; border-radius: 10px; background: var(--warning-soft); color: var(--warning); }
.modal-icon.danger { background: var(--danger-soft); color: var(--danger); }
.modal-title { font-size: 1.02rem; color: var(--text-strong); }
.modal-text { margin-top: 6px; color: var(--muted); font-size: 0.88rem; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; padding: 14px 20px; border-top: 1px solid var(--border-soft); background: var(--surface-2); }
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes modal-in { from { opacity: 0; transform: translateY(8px) scale(.98); } to { opacity: 1; transform: none; } }

/* ---- Responsive ----------------------------------------------------- */
@media (max-width: 1180px) {
  .panel-grid { grid-template-columns: 1fr; }
  .panel-wide { grid-column: auto; }
}
@media (max-width: 900px) {
  :root { --sidebar-w: 0px; }
  .app-shell { grid-template-columns: 1fr; }
  .sidebar {
    position: static;
    height: auto;
    flex-direction: row;
    align-items: center;
    flex-wrap: wrap;
    gap: 4px 2px;
  }
  .brand { padding: 6px 8px; }
  .nav-label, .sidebar-foot { display: none; }
  .side-nav { grid-auto-flow: column; grid-template-columns: none; margin-left: auto; }
  .side-nav a span.nav-text { display: none; }
  .topbar { position: static; padding: 12px 16px; }
  .content { padding: 18px 16px 44px; }
  .review-layout { grid-template-columns: 1fr; }
  .review-layout > .panel:last-child { position: static; }
  .context-strip, .run-filter-bar, .run-summary-grid, .review-summary-grid, .stat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 620px) {
  .topbar { flex-direction: column; align-items: flex-start; }
  .topbar-actions { width: 100%; justify-content: space-between; }
  .panel-header, .publish-bar, .bulk-action-bar, .credential-form { flex-direction: column; align-items: stretch; grid-template-columns: 1fr; }
  .bulk-action-bar .toolbar { margin-left: 0; }
  .tabs { display: flex; }
  .tabs a { flex: 1; text-align: center; }
  .grade-summary, .context-strip, .review-summary-grid, .settings-grid, .run-filter-bar, .run-summary-grid, .stat-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

/* ---- Panel de código de GitHub evaluado --------------------------- */
.github-panel {
  margin-top: 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 12px;
  background: var(--surface-2);
}
.github-panel > summary {
  cursor: pointer;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  font-size: 14px;
}
.github-panel .icon { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 2; }
.code-review-note {
  margin: 8px 0;
  padding: 8px 12px;
  background: var(--accent-soft);
  border-radius: 8px;
  font-size: 14px;
}
.code-review-note p { margin: 4px 0 0; }

/* ---- Banner de filtro por corrida --------------------------------- */
.run-filter-banner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  justify-content: space-between;
  padding: 10px 14px;
  margin-bottom: 16px;
  background: var(--accent-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
}

/* ---- Referencia de nota / enlaces manuales / outlier -------------- */
.grade-max { color: var(--muted); font-weight: 500; font-size: 0.8em; }
.manual-review-hint {
  margin: -6px 0 14px;
  font-size: 13px;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.manual-review-hint a { color: var(--accent); }
.outlier-note {
  margin: 8px 0 0;
  padding: 8px 12px;
  background: var(--accent-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13px;
}
.outlier-note .icon { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 2; }

/* ---- Descartar actividad (calificar a mano) ----------------------- */
.discard-activity {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  padding-left: 12px;
  border-left: 1px solid var(--border);
}

/* ---- Cumplimiento de la consigna (requisitos con cita) ------------ */
.requirements-panel { margin: 14px 0; }
.requirements-panel h3 { font-size: 14px; margin: 0 0 8px; color: var(--text-strong); }
.requirements-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.req { display: flex; gap: 10px; padding: 8px 10px; border: 1px solid var(--border); border-left: 3px solid var(--border-strong); border-radius: 8px; background: var(--surface); }
.req-cumple { border-left-color: #2e9e5b; }
.req-parcial { border-left-color: var(--warning, #d99a00); }
.req-no_cumple { border-left-color: var(--danger); }
.req-status { font-weight: 700; width: 1.1em; text-align: center; }
.req-cumple .req-status { color: #2e9e5b; }
.req-parcial .req-status { color: var(--warning, #d99a00); }
.req-no_cumple .req-status { color: var(--danger); }
.req-body { display: flex; flex-direction: column; gap: 3px; font-size: 14px; }
.req-note { color: var(--muted); }
.req-evidence { margin: 2px 0 0; padding: 4px 10px; border-left: 2px solid var(--border-strong); color: var(--muted); font-size: 12px; font-style: italic; }

/* ---- Alerta de plagio (revisión) ---------------------------------- */
.plagiarism-alert {
  border: 1px solid var(--danger-border);
  background: var(--danger-soft);
  border-radius: 14px;
  padding: 16px 18px;
  margin-bottom: 18px;
}
.plagiarism-alert h2 {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--danger);
  font-size: 16px;
  margin: 0 0 4px;
}
.plagiarism-alert h2 .icon { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; }
.plagiarism-alert .muted { margin: 0 0 12px; font-size: 13px; }
.plagiarism-pair {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--danger);
  border-radius: 10px;
  padding: 10px 12px;
  margin-top: 8px;
}
.plagiarism-pair.plagiarism-revisar { border-left-color: var(--warning, #d99a00); }
.plagiarism-head { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 14px; }
.plagiarism-evidence {
  margin: 8px 0 0;
  padding: 8px 10px;
  background: var(--surface-2);
  border-radius: 8px;
  font-size: 12px;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 140px;
  overflow: auto;
}

/* ---- Autenticación (login / avisos) ------------------------------- */
.auth-body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: var(--bg);
  background-image: var(--bg-grad);
  padding: 24px;
}
.auth-card {
  width: 100%;
  max-width: 400px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  box-shadow: 0 10px 40px rgba(12, 21, 36, 0.08);
}
.auth-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}
.auth-brand .brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
}
.auth-brand .icon { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 2; }
.auth-brand strong { display: block; color: var(--text-strong); }
.auth-brand small { color: var(--muted); }
.auth-form { display: flex; flex-direction: column; gap: 14px; }
.auth-form label { display: flex; flex-direction: column; gap: 6px; font-size: 14px; color: var(--muted); }
.auth-form input {
  padding: 10px 12px;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  background: var(--surface-2);
  color: var(--text);
  font-size: 15px;
}
.auth-form input:focus { outline: 2px solid var(--accent-ring); border-color: var(--accent); }
.auth-form .primary { margin-top: 4px; }
.auth-error {
  background: var(--danger-soft);
  border: 1px solid var(--danger-border);
  color: var(--danger);
  padding: 10px 12px;
  border-radius: 10px;
  margin-bottom: 16px;
  font-size: 14px;
}
.auth-note {
  background: var(--accent-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  margin-bottom: 18px;
  font-size: 14px;
}
.auth-note p { margin: 6px 0; color: var(--muted); }
.auth-note code {
  display: inline-block;
  margin-top: 4px;
  padding: 4px 8px;
  background: var(--surface-3);
  border-radius: 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  user-select: all;
}

/* ---- Chip de usuario en el topbar -------------------------------- */
.user-menu { display: flex; align-items: center; gap: 6px; }
.user-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
  font-size: 13px;
}
.user-chip:hover { background: var(--surface-3); }
.user-chip .user-name { max-width: 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }