:root {
  --fg: #1f2328;
  --muted: #8b949e;
  --accent: #2563eb;
  --accent-soft: #eff6ff;
  --hover: #f5f6f8;
  --line: #ececf0;
  --surface: #f6f7f9;
  --card-bg: #fff;
  --card-shadow: 0 1px 2px rgba(16, 24, 40, 0.06), 0 1px 3px rgba(16, 24, 40, 0.1);
  --success: #166534;
  --success-soft: #ecfdf5;
  --warn: #92400e;
  --warn-soft: #fef3c7;
  --error: #991b1b;
  --error-soft: #fee2e2;
  --space-2xs: clamp(3px, 0.25vw, 5px);
  --space-xs: clamp(5px, 0.45vw, 8px);
  --space-sm: clamp(8px, 0.75vw, 12px);
  --space: clamp(12px, 1.35vw, 20px);
  --space-md: clamp(16px, 2vw, 28px);
  --space-lg: clamp(28px, 4vw, 56px);
  --radius-sm: clamp(6px, 0.65vw, 9px);
  --radius: clamp(9px, 0.9vw, 14px);
  --font-body: clamp(0.875rem, 0.82rem + 0.24vw, 1rem);
  --font-small: clamp(0.75rem, 0.7rem + 0.2vw, 0.875rem);
  --font-title: clamp(1.35rem, 1.08rem + 1.15vw, 1.85rem);
  --font-feedback: clamp(0.75rem, 0.68rem + 0.25vw, 0.9rem);
  --icon: 1em;
  --title-icon: clamp(20px, 1.9vw, 28px);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: var(--font-body)/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--fg);
  background: var(--surface);
  text-size-adjust: 100%;
}

.page {
  width: min(100% - clamp(24px, 5vw, 56px), 920px);
  max-width: 100%;
  margin: 0 auto;
  padding: var(--space-lg) 0 calc(var(--space-lg) * 1.5);
}

.page.page-courses-scheduled {
  width: min(100% - clamp(24px, 5vw, 56px), 1040px);
}

.page.page-errors {
  width: min(100% - clamp(24px, 5vw, 56px), 1040px);
}

.page.page-grades {
  width: min(100% - clamp(24px, 5vw, 56px), 1160px);
}

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

.page-head { display: flex; align-items: center; justify-content: space-between; gap: var(--space); margin-bottom: var(--space); }
.head-actions { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-sm); justify-content: flex-end; }
.title { display: flex; align-items: center; gap: var(--space-sm); font-size: var(--font-title); line-height: 1.18; font-weight: 600; margin: 0; }
.muted { color: var(--muted); }
.notice { background: var(--accent-soft); color: var(--accent); padding: var(--space-sm) var(--space); border-radius: var(--radius); margin: 0 0 var(--space); border: 1px solid rgba(37, 99, 235, .15); }
.notice-error { background: var(--error-soft); color: var(--error); border-color: rgba(153, 27, 27, .15); }
.back { display: inline-flex; align-items: center; gap: var(--space-xs); color: var(--muted); margin-bottom: var(--space-md); }
.back:hover { color: var(--accent); }

.login-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin: clamp(24px, 8vw, 96px) auto 0;
  max-width: 420px;
  padding: var(--space-md);
  background: var(--card-bg);
  box-shadow: var(--card-shadow);
}
.login-card .title { margin-bottom: var(--space-xs); }
.login-form { display: grid; gap: var(--space); margin-top: var(--space-md); }
.field { display: grid; gap: var(--space-xs); font-weight: 500; }
.field input {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font: inherit;
  padding: var(--space-sm);
}
.field select {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font: inherit;
  padding: var(--space-sm);
  background: var(--card-bg);
}
.field input:focus {
  border-color: var(--accent);
  outline: 2px solid var(--accent-soft);
}
.field select:focus {
  border-color: var(--accent);
  outline: 2px solid var(--accent-soft);
}

.tabs {
  display: flex;
  gap: var(--space-2xs);
  overflow-x: auto;
  margin: 0 0 var(--space-md);
  padding: var(--space-2xs);
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }
.tab {
  flex: 1 1 auto;
  color: var(--muted);
  padding: var(--space-sm) var(--space);
  border-radius: calc(var(--radius) - 2px);
  font-weight: 500;
  text-align: center;
  transition: color .15s ease, background .15s ease, box-shadow .15s ease;
}
.tab:hover { color: var(--accent); text-decoration: none; background: var(--hover); }
.tab.active {
  color: var(--accent);
  background: var(--accent-soft);
  box-shadow: inset 0 0 0 1px rgba(37, 99, 235, .18);
}

.empty-state {
  margin-top: var(--space-md);
  padding: clamp(28px, 5vw, 48px) var(--space-md);
  text-align: center;
  background: var(--card-bg);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
}
.empty-state-title {
  margin: 0 0 var(--space-xs);
  font-size: clamp(1rem, 0.95rem + 0.3vw, 1.125rem);
  font-weight: 600;
}
.empty-state-text {
  margin: 0 auto var(--space);
  max-width: 36ch;
  color: var(--muted);
}
.empty-state-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
}

.ui-icon { width: var(--icon); height: var(--icon); flex: 0 0 var(--icon); color: currentColor; }
.title-icon { width: var(--title-icon); height: var(--title-icon); flex: 0 0 var(--title-icon); color: var(--accent); }
.metric { display: inline-flex; align-items: center; gap: var(--space-2xs); white-space: nowrap; }

/* stats */
.stats { display: flex; flex-wrap: wrap; gap: var(--space); color: var(--muted); margin: 0; padding: 0; list-style: none; }
.stats-grid { gap: var(--space); margin: var(--space) 0 var(--space-md); }
.stats li, .stats span { white-space: nowrap; }

/* course list */
.course-list {
  display: grid;
  gap: var(--space);
  list-style: none;
  padding: 0;
  margin: 0;
}
.course-item {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  overflow: hidden;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.course-item:hover {
  border-color: #d8dee8;
  box-shadow: 0 4px 12px rgba(16, 24, 40, 0.08);
}
.course-item:target {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.course-row {
  display: grid;
  align-items: center;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-sm) var(--space);
  padding: var(--space);
}
.course-link { display: flex; align-items: center; gap: var(--space-sm); color: var(--fg); min-width: 0; }
.course-link:hover { text-decoration: none; color: var(--accent); }
.course-cover {
  width: clamp(40px, 5vw, 52px);
  height: clamp(40px, 5vw, 52px);
  object-fit: cover;
  border-radius: var(--radius-sm);
  box-shadow: 0 1px 2px rgba(16, 24, 40, 0.12);
}
.course-name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; }
.course-actions { display: flex; align-items: center; flex: 0 0 auto; flex-wrap: wrap; gap: var(--space-sm); justify-content: flex-end; }
.course-schedule-summary {
  display: grid;
  gap: var(--space-sm);
  grid-column: 1 / -1;
  padding-top: var(--space-xs);
  border-top: 1px solid var(--line);
}

.collection-status {
  display: grid;
  gap: var(--space-xs);
}
.collection-status-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-sm);
}
.collection-status-label {
  color: var(--muted);
  font-size: var(--font-small);
  font-weight: 600;
  letter-spacing: .02em;
  text-transform: uppercase;
}
.collection-status-value {
  font-size: var(--font-small);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}
.collection-progress {
  height: 6px;
  overflow: hidden;
  background: var(--hover);
  border-radius: 999px;
}
.collection-progress-fill {
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #22c55e, #16a34a);
  transition: width .35s ease;
}
.collection-progress-fill-warn {
  background: linear-gradient(90deg, #fbbf24, #f59e0b);
}

.schedule-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.schedule-badge,
.schedule-empty,
.collection-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  border-radius: 999px;
  font-size: var(--font-small);
  padding: var(--space-2xs) var(--space-sm);
  line-height: 1.35;
}
.collection-badge {
  width: fit-content;
  background: var(--success-soft);
  color: var(--success);
  font-weight: 500;
}
.collection-badge-warn {
  background: var(--warn-soft);
  color: var(--warn);
}
.collection-badge-error {
  background: var(--error-soft);
  color: var(--error);
}
.schedule-badge {
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid rgba(37, 99, 235, .12);
}
.schedule-badge-dot {
  width: 7px;
  height: 7px;
  flex: 0 0 7px;
  border-radius: 50%;
  background: currentColor;
  opacity: .55;
}
.schedule-badge-entity {
  font-weight: 600;
}
.schedule-badge-detail {
  color: inherit;
  opacity: .85;
}
.schedule-badge-ok {
  background: var(--success-soft);
  color: var(--success);
  border-color: rgba(22, 101, 52, .15);
}
.schedule-badge-running {
  background: #fff7ed;
  color: #c2410c;
  border-color: rgba(194, 65, 12, .18);
}
.schedule-badge-running .schedule-badge-dot {
  opacity: 1;
  animation: schedule-pulse 1.4s ease-in-out infinite;
}
.schedule-badge-error {
  background: var(--error-soft);
  color: var(--error);
  border-color: rgba(153, 27, 27, .15);
}
.schedule-empty {
  background: var(--hover);
  color: var(--muted);
  border: 1px dashed var(--line);
}

@keyframes schedule-pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.35); opacity: .55; }
}

.scheduler-card,
.collection-card {
  border-top: 1px solid var(--line);
  margin: 0;
  background: #fafbfc;
}
.scheduler-card > summary,
.collection-card > summary {
  color: var(--muted);
  font-size: var(--font-small);
  font-weight: 600;
  padding: var(--space-sm) var(--space);
  user-select: none;
}
.scheduler-card[open] > summary,
.collection-card[open] > summary {
  color: var(--fg);
  background: var(--card-bg);
  border-bottom: 1px solid var(--line);
}
.scheduler-form {
  display: grid;
  gap: var(--space-sm);
  padding: var(--space);
  background: var(--card-bg);
}
.scheduler-row {
  align-items: end;
  display: grid;
  gap: var(--space-sm);
  grid-template-columns: minmax(110px, 0.9fr) minmax(110px, 0.8fr) minmax(180px, 1fr) minmax(160px, 1fr);
  padding: var(--space-sm);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  transition: border-color .15s ease, background .15s ease;
}
.scheduler-row:has(.scheduler-enabled input:checked) {
  background: var(--accent-soft);
  border-color: rgba(37, 99, 235, .22);
}
.scheduler-enabled,
.scheduler-field { display: grid; gap: var(--space-2xs); font-size: var(--font-small); font-weight: 500; }
.scheduler-enabled {
  align-items: center;
  display: flex;
  gap: var(--space-xs);
}
.scheduler-enabled input {
  margin: 0;
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}
.scheduler-field input {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font: inherit;
  padding: var(--space-xs) var(--space-sm);
  background: var(--card-bg);
  transition: border-color .15s ease, box-shadow .15s ease;
}
.scheduler-field input:focus {
  border-color: var(--accent);
  outline: 2px solid var(--accent-soft);
}
.scheduler-meta {
  color: var(--muted);
  font-size: var(--font-small);
  line-height: 1.45;
  padding: var(--space-xs);
  background: var(--card-bg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
}
.scheduler-error { color: var(--error); font-weight: 500; }

.collection-card > summary {
  color: var(--warn);
}
.collection-errors-card > summary {
  color: var(--error);
}
.missing-step-list {
  display: grid;
  gap: var(--space-xs);
  list-style: none;
  margin: 0;
  padding: var(--space-sm);
}
.missing-step-list li {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.table-wrap { overflow-x: auto; }
.errors-lead {
  margin: 0 0 var(--space);
}
.errors-lead code {
  font-size: var(--font-small);
}
.errors-panel {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  overflow: hidden;
}
.errors-panel .errors-table {
  margin: 0;
}
.error-tag {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  font-size: var(--font-small);
  font-weight: 500;
  line-height: 1.35;
  padding: var(--space-2xs) var(--space-sm);
  background: var(--warn-soft);
  color: var(--warn);
}
.error-tag-muted {
  background: var(--hover);
  color: var(--muted);
}
.errors-table {
  border-collapse: collapse;
  min-width: 860px;
  width: 100%;
}
.errors-table th,
.errors-table td {
  border-bottom: 1px solid var(--line);
  padding: var(--space-sm) var(--space);
  text-align: left;
  vertical-align: top;
}
.errors-table tbody tr:last-child td {
  border-bottom: 0;
}
.errors-table tbody tr:hover {
  background: var(--hover);
}
.errors-table th {
  background: #fafbfc;
  color: var(--muted);
  font-size: var(--font-small);
  font-weight: 600;
}
.errors-table code {
  font-size: var(--font-small);
  white-space: nowrap;
}
.error-message {
  max-width: 360px;
  overflow-wrap: anywhere;
}

.grades-dashboard {
  display: grid;
  gap: var(--space);
}
.grades-filter {
  align-items: center;
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  display: grid;
  gap: var(--space-sm);
  grid-template-columns: minmax(220px, 1fr) auto;
  padding: var(--space);
}
.grades-filter-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: flex-end;
}
.grades-course-title {
  font-size: clamp(1rem, 0.95rem + 0.3vw, 1.125rem);
  font-weight: 600;
  line-height: 1.35;
}
.grades-course-picker {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.grades-course-icon {
  align-items: center;
  background: #f8fafc;
  border: 2px solid transparent;
  border-radius: 14px;
  box-shadow: 0 1px 3px rgba(15, 23, 42, .08);
  color: #7c3aed;
  display: inline-flex;
  flex: 0 0 52px;
  font-size: 18px;
  font-weight: 700;
  height: 52px;
  justify-content: center;
  overflow: hidden;
  text-decoration: none;
  transition: border-color .15s ease, box-shadow .15s ease, transform .15s ease;
  width: 52px;
}
.grades-course-icon:hover {
  border-color: #ddd6fe;
  box-shadow: 0 8px 18px rgba(124, 58, 237, .14);
  transform: translateY(-1px);
}
.grades-course-icon-active {
  border-color: #7c3aed;
  box-shadow: 0 0 0 4px rgba(124, 58, 237, .12);
}
.grades-course-icon img {
  display: block;
  height: 100%;
  object-fit: cover;
  width: 100%;
}
.grades-panel {
  background: var(--card-bg);
  border: 1px solid #ede9fe;
  border-radius: 16px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  padding: 12px 14px;
  position: relative;
}
.grades-chart-controls {
  display: flex;
  gap: 4px;
  flex-direction: column;
  margin: 0;
  width: fit-content;
}
.grades-segmented {
  display: flex;
  gap: 4px;
  width: fit-content;
  padding: 3px;
  border-radius: 9px;
  background: #f5f3ff;
}
.grades-period-btn {
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: #666;
  cursor: pointer;
  font: inherit;
  font-size: 12px;
  font-weight: 500;
  padding: 5px 10px;
  transition: all .2s ease;
  white-space: nowrap;
}
.grades-period-btn:hover {
  color: #7c3aed;
  background: rgba(124, 58, 237, .08);
}
.grades-period-btn-active {
  color: #7c3aed;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, .08);
  font-weight: 600;
}
.grades-chart-type-btn {
  align-items: center;
  display: inline-flex;
  justify-content: center;
  padding: 5px 8px;
}
.grades-chart-type-btn .ui-icon {
  width: 16px;
  height: 16px;
}
.grades-legend {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: flex-end;
  margin: -28px 0 4px 0;
  min-height: 28px;
}
.grades-legend-item {
  align-items: center;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: #666;
  cursor: pointer;
  display: inline-flex;
  font: inherit;
  font-size: 12px;
  font-weight: 500;
  gap: 5px;
  min-height: 26px;
  padding: 3px 6px;
  transition: color .15s ease, opacity .15s ease, transform .15s ease;
}
.grades-legend-item:hover {
  color: #333;
  transform: translateY(-1px);
}
.grades-legend-dot {
  background: #7c3aed;
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(124, 58, 237, .12);
  display: inline-flex;
  flex: 0 0 14px;
  height: 14px;
  width: 14px;
}
.grades-legend-icon-wrap {
  align-items: center;
  background: color-mix(in srgb, var(--legend-color) 15%, white);
  box-shadow: 0 0 10px color-mix(in srgb, var(--legend-color) 28%, transparent);
  display: inline-flex;
  height: 26px;
  justify-content: center;
  min-width: 28px;
  padding: 0 5px;
}
.grades-legend-icon {
  display: block;
  height: 18px;
  width: 18px;
}
.grades-legend-item-disabled {
  color: #94a3b8;
  opacity: .72;
}
.grades-legend-item-disabled .grades-legend-dot {
  background: #94a3b8;
  box-shadow: 0 0 0 3px rgba(148, 163, 184, .12);
}
.grades-legend-item-disabled .grades-legend-icon-wrap {
  background: rgba(148, 163, 184, .15);
  box-shadow: 0 0 10px rgba(148, 163, 184, .22);
}
.grades-legend-item-disabled .grades-legend-icon {
  filter: grayscale(1);
  opacity: .45;
}
.grades-chart-wrap {
  height: 42vh;
  max-height: 500px;
  min-height: 280px;
  position: relative;
}
.grades-chart-wrap canvas {
  height: 100% !important;
  width: 100% !important;
}
.embed-grades-body {
  background: transparent;
  margin: 0;
  padding: 0;
}
.grades-dashboard-embed {
  gap: 0;
  padding: 0;
}
.grades-panel-embed {
  border-radius: 0;
  border: 0;
  box-shadow: none;
  min-height: 100vh;
}
.btn.copied {
  background: var(--success-soft);
  color: var(--success);
}
.btn.copy-failed {
  background: var(--error-soft);
  color: var(--error);
}
.grades-help {
  margin: var(--space-sm) 0 0;
}
.grades-detail-summary {
  margin: 0 0 var(--space);
}
.grades-step-list {
  display: grid;
  gap: var(--space-xs);
  list-style: none;
  margin: 0;
  padding: 0;
}
.grades-step-item {
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  display: grid;
  gap: var(--space-sm);
  grid-template-columns: minmax(0, 1fr) auto;
  padding: var(--space-sm);
}
.grades-step-main {
  display: grid;
  gap: var(--space-2xs);
  min-width: 0;
}
.grades-step-main .muted {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.grades-step-delta {
  background: var(--accent-soft);
  border-radius: 999px;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  padding: var(--space-2xs) var(--space-sm);
}

/* course card */
.course .cover { width: 100%; max-height: clamp(180px, 28vw, 300px); object-fit: cover; border-radius: var(--radius); margin-bottom: var(--space-md); }
.summary { color: #444; margin: 0 0 var(--space-sm); }
.actions { display: flex; flex-wrap: wrap; gap: var(--space-sm); margin-top: var(--space-md); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-xs); background: var(--accent); color: #fff; padding: var(--space-sm) var(--space); border: 0; border-radius: var(--radius); font: inherit; font-weight: 500; cursor: pointer; }
.btn:hover { text-decoration: none; opacity: .92; }
.btn.ghost { background: var(--hover); color: var(--fg); }

/* tree */
.tree { margin-top: var(--space-sm); }
details { margin: var(--space-2xs) 0; }
summary { cursor: pointer; list-style: none; border-radius: var(--radius); padding: var(--space-sm); display: flex; align-items: center; gap: var(--space-sm); }
summary::-webkit-details-marker { display: none; }
summary:hover { background: var(--hover); }

.section > summary { font-weight: 600; }
.sec-num { color: var(--muted); font-variant-numeric: tabular-nums; min-width: 1.4em; text-align: right; }
.sec-title { flex: 1; }
.sec-meta { display: flex; flex-wrap: wrap; gap: var(--space-sm); color: var(--muted); font-weight: 400; font-size: var(--font-small); }

.lesson { margin-left: clamp(10px, 2.2vw, 24px); }
.lesson > summary { color: #333; }
.les-title { flex: 1; }

/* steps */
.steps { list-style: none; margin: var(--space-2xs) 0 var(--space-sm); padding: 0 0 0 clamp(14px, 3vw, 32px); }
.step { padding: var(--space-xs) var(--space-sm); border-radius: var(--radius); scroll-margin-top: var(--space-md); }
.step:hover { background: var(--hover); }
.step-row { display: flex; align-items: center; gap: var(--space-sm); min-width: 0; }
.type-icon { width: clamp(16px, 1.4em, 22px); height: clamp(16px, 1.4em, 22px); object-fit: contain; }
.type-svg { width: clamp(16px, 1.4em, 22px); height: clamp(16px, 1.4em, 22px); flex: 0 0 clamp(16px, 1.4em, 22px); color: var(--accent); background: var(--accent-soft); border-radius: var(--radius-sm); padding: 2px; }
.step-pos { color: var(--muted); font-variant-numeric: tabular-nums; min-width: 1.6em; text-align: right; font-size: var(--font-small); }
.step-type {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-align: left;
  text-overflow: ellipsis;
  white-space: nowrap;
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
  font: inherit;
  padding: 0;
}
.step-type:hover,
.step-type:focus-visible { color: var(--accent); }
.step-refreshed { background: var(--accent-soft); }

/* оценки (num_grades) */
.feedback-line { display: flex; align-items: center; gap: var(--space-xs); margin: var(--space-xs) 0 var(--space-2xs) clamp(20px, 3.5vw, 34px); min-width: 0; }
.step:not(.step-open) > .feedback-line { display: none; }
.feedback {
  display: inline-flex; align-items: center; gap: var(--space-sm);
  max-width: 100%; padding: var(--space-xs) var(--space-sm);
  border: 1px solid var(--line); border-radius: 999px;
  background: #fff; font-size: var(--font-feedback); color: var(--muted);
}
.feedback-summary {
  display: inline-flex; align-items: center; gap: var(--space-xs);
  padding: var(--space-2xs) var(--space-sm); border-radius: 999px;
  border: 1px solid transparent;
}
.rating-stars { display: inline-flex; align-items: center; gap: 1px; }
.rating-stars__star {
  position: relative; display: inline-flex;
  width: 1em; height: 1em; color: #d1d5db;
}
.star-fill {
  position: absolute; inset: 0; width: var(--star-fill);
  overflow: hidden; color: #f59e0b;
}
.star-icon { width: 1em; height: 1em; flex: 0 0 1em; }
.feedback-score { color: inherit; font-weight: 600; font-variant-numeric: tabular-nums; }
.feedback-total { white-space: nowrap; }
.feedback-grades { display: inline-flex; align-items: center; gap: var(--space-xs); }
.feedback-queued {
  border-color: rgba(37, 99, 235, .35);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.feedback-score-empty { background: var(--hover); color: var(--muted); border-color: var(--line); }
.feedback-summary:not(.feedback-score-empty)[class*="feedback-score-"] {
  background: hsl(var(--score-hue) 82% 92%);
  color: hsl(var(--score-hue) 72% 25%);
  border-color: hsl(var(--score-hue) 72% 76%);
}
.feedback-score-100 { --score-hue: 0; }
.feedback-score-125 { --score-hue: 8; }
.feedback-score-150 { --score-hue: 16; }
.feedback-score-175 { --score-hue: 24; }
.feedback-score-200 { --score-hue: 32; }
.feedback-score-225 { --score-hue: 40; }
.feedback-score-250 { --score-hue: 48; }
.feedback-score-275 { --score-hue: 56; }
.feedback-score-300 { --score-hue: 64; }
.feedback-score-325 { --score-hue: 72; }
.feedback-score-350 { --score-hue: 80; }
.feedback-score-375 { --score-hue: 88; }
.feedback-score-400 { --score-hue: 96; }
.feedback-score-425 { --score-hue: 104; }
.feedback-score-450 { --score-hue: 112; }
.feedback-score-475 { --score-hue: 120; }
.feedback-score-500 { --score-hue: 128; }
.grade { display: inline-flex; align-items: center; gap: var(--space-2xs); font-variant-numeric: tabular-nums; }
.grade-zero { opacity: .32; }
.grade-count { min-width: 1ch; }
.face { width: 1.15em; height: 1.15em; vertical-align: middle; }
.feedback-refresh { margin: 0; padding-left: var(--space-2xs); border-left: 1px solid var(--line); }
.icon-btn {
  position: relative; display: inline-flex; align-items: center; justify-content: center;
  width: clamp(26px, 2.4em, 34px); height: clamp(26px, 2.4em, 34px); border: 0; background: transparent;
  color: var(--muted); border-radius: 999px; padding: 0; cursor: pointer; overflow: hidden;
}
.icon-btn:hover { color: var(--accent); background: var(--accent-soft); }
.icon-btn .ui-icon { position: relative; z-index: 1; }
.icon-btn.is-loading {
  color: #15803d;
  cursor: wait;
  background: conic-gradient(#22c55e var(--refresh-progress), #e5e7eb 0);
}
.icon-btn.is-loading::before {
  content: "";
  position: absolute;
  inset: 3px;
  background: #fff;
  border-radius: 999px;
}
.icon-btn:disabled { opacity: .85; }
.icon-btn.refresh-failed { color: #991b1b; background: #fee2e2; }
.copy-iframe-btn {
  display: inline-flex; align-items: center; justify-content: center;
  flex: 0 0 auto; width: clamp(22px, 2em, 28px); height: clamp(22px, 2em, 28px); border: 0; background: transparent;
  color: var(--muted); border-radius: 7px; padding: 0; cursor: pointer;
  opacity: .32; transition: opacity .15s ease, color .15s ease, background .15s ease;
}
.feedback-line:hover .copy-iframe-btn,
.copy-iframe-btn:focus-visible { opacity: .8; }
.copy-iframe-btn:hover { color: var(--accent); background: var(--accent-soft); }
.copy-iframe-btn.copied { color: #15803d; background: #dcfce7; opacity: 1; }
.copy-iframe-btn.copy-failed { color: #991b1b; background: #fee2e2; opacity: 1; }
.feedback-updated {
  animation: feedback-flash 1.4s ease-out;
}
.feedback-updated .icon-btn .ui-icon {
  animation: refresh-spin .7s ease-out;
}

@keyframes feedback-flash {
  0% { box-shadow: 0 0 0 0 rgba(37, 99, 235, .45); border-color: var(--accent); }
  60% { box-shadow: 0 0 0 8px rgba(37, 99, 235, 0); border-color: var(--accent); }
  100% { box-shadow: none; border-color: var(--line); }
}

@keyframes refresh-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.embed-body {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  margin: 0;
  padding: 0;
  width: 100%;
  background: transparent;
}

@media (max-width: 720px) {
  .page-head { align-items: flex-start; flex-direction: column; }
  .head-actions { align-items: stretch; flex-direction: column; width: 100%; }
  .head-actions .btn,
  .head-actions form { width: 100%; }
  .course-row { grid-template-columns: 1fr; }
  .course-actions { align-items: stretch; flex-direction: column; width: 100%; }
  .course-actions .btn,
  .course-actions form { width: 100%; }
  .course-row .stats { padding-left: calc(clamp(40px, 5vw, 52px) + var(--space-sm)); }
  .scheduler-row { grid-template-columns: 1fr; }
  .grades-filter { grid-template-columns: 1fr; }
  .grades-filter-actions { justify-content: stretch; }
  .grades-filter-actions .btn { width: 100%; }
  .grades-filter .btn { width: 100%; }
  .grades-course-picker { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 2px; scrollbar-width: none; }
  .grades-course-picker::-webkit-scrollbar { display: none; }
  .grades-course-icon { flex-basis: 46px; height: 46px; width: 46px; }
  .grades-panel { border-radius: 12px; padding: 10px; }
  .grades-chart-wrap { height: 35vh; min-height: 220px; }
  .grades-chart-controls { overflow-x: auto; scrollbar-width: none; width: 100%; }
  .grades-chart-controls::-webkit-scrollbar { display: none; }
  .grades-segmented { flex: 0 0 auto; }
  .grades-period-btn { font-size: 12px; padding: 5px 10px; }
  .grades-legend { justify-content: flex-start; margin: var(--space-xs) 0 0; }
  .schedule-badge { flex-wrap: wrap; }
  .actions { flex-direction: column; align-items: stretch; }
  .actions .btn,
  .actions form,
  .actions button { width: 100%; }
  .sec-meta { width: 100%; padding-left: 2.2em; }
  summary { align-items: flex-start; flex-wrap: wrap; }
}

@media (max-width: 520px) {
  .steps { padding-left: var(--space-sm); }
  .grades-chart-wrap { height: 30vh; min-height: 180px; }
  .step-row { align-items: flex-start; gap: var(--space-xs); }
  .step-type { white-space: normal; overflow: visible; text-overflow: clip; }
  .feedback-line { align-items: flex-start; margin-left: 0; }
  .feedback {
    align-items: stretch;
    border-radius: var(--radius);
    flex: 1 1 auto;
    flex-direction: column;
    gap: var(--space-xs);
    min-width: 0;
  }
  .feedback-summary { justify-content: center; width: 100%; }
  .feedback-grades { justify-content: space-between; width: 100%; }
  .feedback-refresh { border-left: 0; border-top: 1px solid var(--line); display: flex; justify-content: center; padding: var(--space-xs) 0 0; }
}