:root {
  --ink: #17201e;
  --muted: #68736f;
  --line: #dfe5e2;
  --surface: #ffffff;
  --canvas: #f4f7f5;
  --nav: #142b27;
  --green: #087f5b;
  --green-dark: #066446;
  --blue: #2d62c8;
  --red: #bd3b37;
  --amber: #a86505;
  --shadow: 0 8px 24px rgba(20, 43, 39, .08);
}

* { box-sizing: border-box; }
html { font-family: "Segoe UI", Tahoma, Arial, sans-serif; color: var(--ink); background: var(--canvas); }
body { margin: 0; min-width: 320px; }
button, input, select, textarea { font: inherit; letter-spacing: 0; }
button { cursor: pointer; }
[hidden] { display: none !important; }

.login-view { min-height: 100vh; display: grid; place-items: center; padding: 24px; background: var(--canvas); }
.login-panel { width: min(420px, 100%); background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow); padding: 30px; border-radius: 8px; display: grid; gap: 16px; }
.login-panel h1 { margin: 0; font-size: 24px; }
.login-panel p { margin: -8px 0 8px; color: var(--muted); }
.brand-mark { width: 42px; height: 42px; display: grid; place-items: center; background: var(--green); color: white; font-weight: 800; border-radius: 6px; }

.app { min-height: 100vh; display: grid; grid-template-columns: 244px minmax(0, 1fr); }
.sidebar { position: sticky; top: 0; height: 100vh; background: var(--nav); color: white; display: flex; flex-direction: column; padding: 18px 14px; }
.brand { display: flex; align-items: center; gap: 11px; padding: 2px 8px 18px; border-bottom: 1px solid rgba(255,255,255,.12); }
.brand strong, .brand small { display: block; }
.brand small { color: #a9bdb7; margin-top: 2px; }
.sidebar nav { display: grid; gap: 4px; padding-top: 18px; overflow-y: auto; scrollbar-width: thin; }
.sidebar nav .unified-link { display: block; color: #dbeafe; text-decoration: none; border: 1px solid rgba(255,255,255,.16); border-radius: 8px; padding: 10px 12px; margin-bottom: 3px; font-size: 13px; }
.sidebar nav .unified-link:hover { background: rgba(255,255,255,.08); }
.sidebar nav button { border: 0; color: #c8d7d2; background: transparent; text-align: right; padding: 11px 12px; border-radius: 6px; display: flex; gap: 10px; align-items: center; }
.sidebar nav button:hover, .sidebar nav button.active { background: rgba(255,255,255,.1); color: white; }
.sidebar nav button span { width: 20px; text-align: center; font-size: 18px; }
.sidebar-footer { margin-top: auto; border-top: 1px solid rgba(255,255,255,.12); padding: 15px 8px 0; display: flex; align-items: center; gap: 8px; color: #c8d7d2; font-size: 13px; }
.status-dot { width: 9px; height: 9px; border-radius: 50%; background: #d39a39; }
.status-dot.online { background: #3bc58b; }
.sidebar-footer .icon-button { margin-right: auto; color: white; }

.workspace { min-width: 0; padding: 0 28px 40px; }
.topbar { min-height: 92px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border-bottom: 1px solid var(--line); margin-bottom: 24px; }
.topbar h1 { margin: 0; font-size: 24px; }
.topbar p { margin: 5px 0 0; color: var(--muted); }
.top-actions { display: flex; align-items: center; gap: 12px; }
.view { display: none; }
.view.active { display: block; }

.metrics { display: grid; grid-template-columns: repeat(5, minmax(140px, 1fr)); gap: 14px; margin-bottom: 26px; }
.metrics article { background: var(--surface); border: 1px solid var(--line); border-radius: 7px; padding: 18px; min-height: 128px; }
.metrics span, .metrics small { display: block; color: var(--muted); }
.metrics strong { display: block; font-size: 30px; margin: 12px 0 6px; }
.section-head, .toolbar { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 14px; }
.section-head h2 { margin: 0; font-size: 18px; }
.section-head p { margin: 4px 0 0; color: var(--muted); }
.toolbar { background: var(--surface); padding: 12px; border: 1px solid var(--line); border-radius: 7px; }
.toolbar-actions { display: flex; align-items: center; gap: 8px; }
.search-group { display: flex; min-width: min(640px, 100%); }
.search-group input { flex: 1; }
.search-group.user-search { flex: 1 1 860px; min-width: min(860px, 100%); }
.search-group.user-search select { flex: 0 0 155px; }
.search-group.user-search input { min-height: 46px; font-size: 15px; }
.search-group > * { border-radius: 0; }
.search-group > :first-child { border-radius: 0 6px 6px 0; }
.search-group > :last-child { border-radius: 6px 0 0 6px; }

input, select, textarea { width: 100%; border: 1px solid #cfd8d4; background: white; color: var(--ink); padding: 10px 11px; border-radius: 6px; outline: none; }
input:focus, select:focus, textarea:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(8,127,91,.12); }
label { display: grid; gap: 6px; font-size: 13px; font-weight: 600; }
label small { color: var(--muted); font-weight: 400; }
.field-label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
button.primary, button.secondary, button.danger { border: 1px solid transparent; border-radius: 6px; padding: 9px 14px; font-weight: 700; white-space: nowrap; }
button.primary { background: var(--green); color: white; }
button.primary:hover { background: var(--green-dark); }
button.secondary { background: white; border-color: #cfd8d4; color: var(--ink); }
button.danger { background: var(--red); color: white; }
button:disabled { opacity: .48; cursor: not-allowed; }
.icon-button { width: 34px; height: 34px; padding: 0; display: grid; place-items: center; border: 0; background: transparent; border-radius: 6px; font-size: 20px; }

.table-shell { overflow: auto; border: 1px solid var(--line); border-radius: 7px; background: var(--surface); }
table { width: 100%; border-collapse: collapse; min-width: 780px; }
th, td { text-align: right; padding: 11px 13px; border-bottom: 1px solid #edf0ee; font-size: 13px; vertical-align: middle; }
th { position: sticky; top: 0; z-index: 1; background: #f8faf9; color: #52605c; font-weight: 700; }
tbody tr:hover { background: #fafcfb; }
tbody tr:last-child td { border-bottom: 0; }
.empty-row { text-align: center; color: var(--muted); padding: 32px; }
.list-panel { min-width: 0; }
.list-meta { display: flex; justify-content: space-between; gap: 12px; color: var(--muted); font-size: 13px; margin: 0 2px 8px; }
.pagination { display: flex; align-items: center; justify-content: center; gap: 10px; margin-top: 12px; }
.pagination select { width: 76px; padding: 8px; }
.progress-track { width: 120px; height: 7px; background: #e4e9e7; border-radius: 4px; overflow: hidden; }
.progress-track span { display: block; height: 100%; background: var(--green); }
.badge { display: inline-flex; align-items: center; min-height: 24px; padding: 3px 8px; border-radius: 5px; font-size: 12px; font-weight: 700; background: #e9f5f0; color: var(--green-dark); }
.badge.high, .badge.conflict { background: #fbeaea; color: #9e302d; }
.badge.medium { background: #fff3df; color: var(--amber); }
.badge.create { background: #e8f0ff; color: var(--blue); }

.split-layout { display: grid; grid-template-columns: minmax(0, 1fr) 0; gap: 0; transition: grid-template-columns .2s ease; }
.split-layout:has(.editor-panel:not([hidden])) { grid-template-columns: minmax(0, 1fr) minmax(320px, 390px); gap: 16px; }
.editor-panel { background: var(--surface); border: 1px solid var(--line); border-radius: 7px; box-shadow: var(--shadow); padding: 16px; align-self: start; }
.editor-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.editor-head h2 { margin: 0; font-size: 18px; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 13px; }
.form-grid .wide { grid-column: 1 / -1; }
.toggle-label { display: flex; align-items: center; gap: 8px; padding-top: 26px; }
.toggle-label input { width: auto; }
.form-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }

.bulk-layout { display: grid; grid-template-columns: minmax(300px, .75fr) minmax(0, 1.25fr); gap: 16px; }
.import-panel, .preview-panel { background: white; border: 1px solid var(--line); border-radius: 7px; padding: 16px; }
.file-picker { display: inline-flex; width: auto; background: #edf5f2; color: var(--green-dark); padding: 9px 13px; border-radius: 6px; cursor: pointer; margin-bottom: 12px; }
.file-picker input { display: none; }
#bulk-input { min-height: 360px; resize: vertical; direction: ltr; text-align: left; font-family: Consolas, monospace; font-size: 12px; }
.preview-summary { min-height: 48px; display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 12px; color: var(--muted); }
.segmented { display: inline-flex; border: 1px solid #cfd8d4; border-radius: 6px; overflow: hidden; }
.segmented button { border: 0; border-left: 1px solid #cfd8d4; background: white; padding: 7px 13px; }
.segmented button:last-child { border-left: 0; }
.segmented button.active { background: var(--green); color: white; }
.analysis-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.analysis-grid article { background: white; border: 1px solid var(--line); border-radius: 7px; padding: 18px; }
.analysis-grid h3 { font-size: 14px; color: var(--muted); margin: 0 0 12px; }
.analysis-grid strong { font-size: 28px; }

.category-grid { display: grid; grid-template-columns: repeat(3, minmax(230px, 1fr)); gap: 12px; margin-bottom: 16px; }
.category-grid article { background: white; border: 1px solid var(--line); border-radius: 7px; padding: 12px; display: grid; gap: 10px; min-width: 0; }
.category-card-head { border: 0; background: transparent; padding: 2px; display: flex; align-items: center; justify-content: space-between; gap: 10px; text-align: right; color: var(--ink); }
.category-card-head strong { overflow-wrap: anywhere; }
.category-browser { display: flex; align-items: end; justify-content: space-between; gap: 20px; padding: 14px 2px; border-top: 1px solid var(--line); }
.category-browser p, .path-line { margin: 5px 0 0; color: var(--muted); overflow-wrap: anywhere; }
.category-picker { display: flex; flex-wrap: wrap; gap: 8px; }
.category-picker select { width: auto; min-width: 190px; max-width: 320px; }
.compact { margin-top: 16px; }

.enrol-toolbar { display: grid; grid-template-columns: minmax(220px, .7fr) minmax(300px, 1.3fr) auto auto; align-items: end; gap: 12px; background: white; border: 1px solid var(--line); padding: 14px; border-radius: 7px; }
.assignment-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 16px; }
.assignment-pane { background: white; border: 1px solid var(--line); border-radius: 7px; padding: 15px; min-width: 0; }
.pane-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 12px; }
.pane-head h3, .analytics-panel h3 { margin: 0; font-size: 16px; }
.pane-head p { color: var(--muted); margin: 4px 0 0; }
.inline-check { display: flex; align-items: center; gap: 6px; }
.inline-check input, .selection-row input { width: auto; }
.selection-list { min-height: 280px; max-height: 460px; overflow: auto; border: 1px solid var(--line); border-radius: 6px; margin: 12px 0; }
.selection-row { display: flex; grid-template-columns: none; flex-direction: row; align-items: center; gap: 10px; padding: 10px 12px; border-bottom: 1px solid #edf0ee; font-weight: 500; cursor: pointer; }
.selection-row:last-child { border-bottom: 0; }
.selection-row:hover { background: #f8faf9; }
.wide-command { width: 100%; min-height: 42px; }

.analytics-metrics { margin-bottom: 16px; }
.analytics-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.analytics-panel { background: white; border: 1px solid var(--line); border-radius: 7px; padding: 16px; }
.bar-list { display: grid; gap: 12px; margin-top: 16px; }
.bar-row { display: grid; grid-template-columns: minmax(140px, 1fr) auto; gap: 6px 10px; font-size: 13px; }
.bar-row > span { overflow-wrap: anywhere; }
.bar-row i { grid-column: 1 / -1; display: block; height: 7px; border-radius: 4px; background: #e5ebe8; overflow: hidden; }
.bar-row b { display: block; height: 100%; background: var(--green); }
.course-drilldown { margin-bottom: 16px; }
.course-drilldown select { min-width: 330px; }
.course-analysis-tools input { width: 220px; }
.coverage-note { border-right: 4px solid var(--amber); padding: 13px 15px; background: #fffaf0; display: grid; gap: 5px; color: #554b3c; }
.coverage-note p { margin: 0; }

.settings-grid { display: grid; gap: 24px; }
.settings-section { min-width: 0; }
.org-actions { display: grid; grid-template-columns: .8fr 1.2fr; gap: 12px; margin-bottom: 14px; }
.org-actions form { display: flex; align-items: end; gap: 8px; background: white; border: 1px solid var(--line); padding: 13px; border-radius: 7px; }
.org-actions label { flex: 1; }
.organization-list { display: grid; grid-template-columns: repeat(3, minmax(220px, 1fr)); gap: 10px; }
.organization-list section { background: white; border-right: 3px solid var(--green); padding: 12px 14px; }
.organization-list p { margin: 6px 0 0; color: var(--muted); font-size: 13px; line-height: 1.7; }
.floating-editor { position: fixed; z-index: 18; top: 100px; left: 28px; width: min(430px, calc(100vw - 40px)); }

.dialog-overlay { position: fixed; z-index: 30; inset: 0; background: rgba(11, 24, 21, .48); display: grid; place-items: center; padding: 20px; }
.dialog-panel { width: min(650px, 100%); background: white; border-radius: 8px; box-shadow: 0 20px 60px rgba(0,0,0,.22); padding: 20px; }
.dialog-panel h2 { margin: 0 0 18px; font-size: 19px; }

.toast { position: fixed; z-index: 20; left: 22px; bottom: 22px; max-width: 420px; background: #182622; color: white; padding: 12px 15px; border-radius: 7px; box-shadow: var(--shadow); opacity: 0; transform: translateY(10px); pointer-events: none; transition: .2s; }
.toast.show { opacity: 1; transform: translateY(0); }
.toast.error { background: #8f2f2c; }
.form-error { color: var(--red); min-height: 20px; font-size: 13px; }

@media (max-width: 980px) {
  .app { grid-template-columns: 78px minmax(0, 1fr); }
  .brand > div:last-child, .sidebar nav button:not(.active) { font-size: 0; }
  .sidebar nav button { justify-content: center; }
  .sidebar nav button.active { font-size: 0; }
  .sidebar nav button span { font-size: 18px; }
  .sidebar-footer span:not(.status-dot) { display: none; }
  .metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bulk-layout { grid-template-columns: 1fr; }
  .category-grid, .organization-list { grid-template-columns: repeat(2, minmax(220px, 1fr)); }
  .assignment-grid, .analytics-layout { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .app { display: block; padding-bottom: 68px; }
  .sidebar { position: fixed; z-index: 10; inset: auto 0 0; width: 100%; height: 64px; padding: 7px; }
  .brand, .sidebar-footer { display: none; }
  .sidebar nav { display: flex; justify-content: flex-start; padding: 0; overflow-x: auto; scrollbar-width: none; }
  .sidebar nav::-webkit-scrollbar { display: none; }
  .sidebar nav button { flex: 0 0 56px; min-width: 56px; height: 50px; padding: 6px; }
  .sidebar nav button span { font-size: 20px; }
  .workspace { padding: 0 12px 24px; }
  .topbar { min-height: 82px; }
  .topbar p, #operator-name { display: none; }
  .metrics { grid-template-columns: 1fr 1fr; gap: 8px; }
  .metrics article { min-height: 112px; padding: 14px; }
  .metrics strong { font-size: 25px; }
  .toolbar, .section-head { align-items: stretch; flex-direction: column; }
  .toolbar-actions { justify-content: stretch; }
  .toolbar-actions button { flex: 1; }
  .search-group { min-width: 0; }
  .search-group.user-search { min-width: 0; flex-basis: auto; }
  .search-group.user-search select { flex-basis: 120px; }
  .split-layout:has(.editor-panel:not([hidden])) { grid-template-columns: 1fr; }
  .form-grid, .analysis-grid { grid-template-columns: 1fr; }
  .category-grid, .organization-list { grid-template-columns: 1fr; }
  .category-browser, .enrol-toolbar, .org-actions { display: grid; grid-template-columns: 1fr; align-items: stretch; }
  .category-picker { display: grid; }
  .category-picker select, .course-drilldown select { width: 100%; min-width: 0; max-width: none; }
  .org-actions form { display: grid; }
  .assignment-pane { padding: 12px; }
}