/* Design system ported from sources/curriculum-assignment-mockup.html. */
:root {
  --ink: #1a2a6e;
  --ink-soft: #44518c;
  --paper: #f7f8fa;
  --panel: #ffffff;
  --line: #e2e5eb;
  --line-strong: #c7ccd6;
  --accent: #d99a2b;
  --accent-soft: #faf0dc;
  --mand: #0f6e63;
  --mand-soft: #e1f0ec;
  --elec: #99622a;
  --elec-soft: #f7eee1;
  --muted: #6b7080;
  --unassigned: #b23a2f;
  --unassigned-soft: #fbeae7;
  font-family: -apple-system, "Segoe UI", Inter, Arial, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink); font-size: 14px; }
.code { font-family: "SFMono-Regular", Menlo, Consolas, monospace; font-size: 12px; }
.app { max-width: 1180px; margin: 0 auto; padding: 28px 24px 60px; }

.topbar { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 18px; flex-wrap: wrap; gap: 14px; }
.title { font-size: 19px; font-weight: 600; letter-spacing: -0.01em; }
.subtitle { color: var(--muted); font-size: 13px; margin-top: 3px; }
.badge-major { display: inline-block; background: var(--ink); color: #fff; font-size: 11px; padding: 2px 8px; border-radius: 3px; margin-right: 8px; letter-spacing: 0.02em; }

.controls { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.search { position: relative; }
.search input { width: 220px; padding: 8px 10px 8px 30px; border: 1px solid var(--line-strong); border-radius: 6px; background: #fff; font-size: 13px; }
.search svg { position: absolute; left: 9px; top: 9px; opacity: 0.45; }
select, .chip-btn { border: 1px solid var(--line-strong); background: #fff; border-radius: 6px; padding: 8px 10px; font-size: 13px; color: var(--ink); cursor: pointer; }
.chip-btn.active { background: var(--ink); color: #fff; border-color: var(--ink); }
.soat-input { width: 52px; padding: 4px 6px; border: 1px solid var(--line-strong); border-radius: 6px; font-size: 13px; text-align: center; color: var(--ink); background: #fff; }
.soat-input:focus { outline: none; border-color: var(--accent); }

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin: 16px 0 20px; }
.stats.wide { grid-template-columns: repeat(5, 1fr); }
.stat { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px; }
.stat .num { font-size: 20px; font-weight: 600; }
.stat .lbl { font-size: 11.5px; color: var(--muted); margin-top: 2px; }
.stat.warn .num { color: var(--unassigned); }
.stat.ok .num { color: var(--mand); }

.legend { display: flex; gap: 16px; align-items: center; font-size: 12px; color: var(--muted); margin: 2px 0 12px; flex-wrap: wrap; }
.legend span { display: inline-flex; align-items: center; gap: 5px; }
.dot { width: 8px; height: 8px; border-radius: 2px; display: inline-block; }

.table-wrap { border: 1px solid var(--line); border-radius: 8px; background: var(--panel); overflow: auto; max-height: 640px; }
table { border-collapse: collapse; width: 100%; }
.table-wrap table { min-width: 1080px; }
.table-wrap.narrow table { min-width: 0; }
thead th { position: sticky; top: 0; background: #eef0f4; z-index: 3; border-bottom: 1px solid var(--line-strong); font-weight: 600; font-size: 11px; color: var(--ink-soft); text-transform: uppercase; letter-spacing: 0.03em; padding: 9px 8px; text-align: left; white-space: nowrap; }
th.sem-h { text-align: center; width: 40px; }
td { padding: 12px 8px; border-bottom: 1px solid var(--line); vertical-align: middle; }
tbody tr:hover td { background: #f5f6f8; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }

/* Density: comfortable is the default above; compact restores the tight rhythm. */
:root[data-density="compact"] td { padding: 6px 8px; }
:root[data-density="compact"] thead th { padding: 7px 8px; }

.col-idx { width: 34px; color: var(--muted); font-size: 12px; }
.col-code { position: sticky; left: 0; background: var(--panel); z-index: 2; min-width: 96px; }
tbody tr:hover .col-code { background: #f5f6f8; }
.col-name { position: sticky; left: 96px; background: var(--panel); z-index: 2; min-width: 260px; box-shadow: 2px 0 0 0 var(--line); }
tbody tr:hover .col-name { background: #f5f6f8; }
thead .col-code, thead .col-name { background: #eef0f4; z-index: 4; }

.group-row td { background: #eceef2; font-weight: 600; padding: 8px; }
.group-row .toggle { cursor: pointer; display: inline-flex; align-items: center; gap: 6px; }
.group-row .toggle svg { transition: transform 0.15s; }
.group-row.collapsed .toggle svg { transform: rotate(-90deg); }
.group-count { color: var(--muted); font-weight: 400; font-size: 12px; }

.sem-cell { text-align: center; width: 40px; }
.sem-fill { width: 26px; height: 22px; margin: 0 auto; border-radius: 4px; display: flex; align-items: center; justify-content: center; font-size: 11px; font-weight: 600; background: var(--accent-soft); color: var(--accent); }
.sem-empty { width: 26px; height: 22px; margin: 0 auto; }

.tag { font-size: 10.5px; padding: 2px 6px; border-radius: 3px; font-weight: 600; letter-spacing: 0.02em; }
.tag-mand { background: var(--mand-soft); color: var(--mand); }
.tag-elec { background: var(--elec-soft); color: var(--elec); }

.credits { font-size: 12px; color: var(--muted); }

.assign-cell { min-width: 170px; }
.teacher-chip { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--line-strong); border-radius: 16px; padding: 4px 10px 4px 4px; background: #fff; cursor: pointer; font-size: 12.5px; width: 100%; }
.avatar { width: 20px; height: 20px; border-radius: 50%; background: var(--accent-soft); color: var(--accent); font-size: 10px; font-weight: 700; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.teacher-chip.empty { color: var(--unassigned); border-color: var(--unassigned-soft); background: var(--unassigned-soft); justify-content: center; padding: 5px 10px; }

.popover { position: absolute; background: #fff; border: 1px solid var(--line-strong); border-radius: 8px; box-shadow: 0 6px 18px rgba(20, 24, 40, 0.14); z-index: 20; width: 220px; padding: 6px; }
.popover input { width: 100%; padding: 6px 8px; border: 1px solid var(--line); border-radius: 5px; font-size: 12.5px; margin-bottom: 6px; }
.popover .opt { padding: 6px 8px; border-radius: 5px; font-size: 12.5px; cursor: pointer; display: flex; align-items: center; gap: 8px; width: 100%; border: 0; background: none; text-align: left; color: var(--ink); }
.popover .opt:hover { background: var(--accent-soft); }
.popover .opt.clear { color: var(--unassigned); border-top: 1px solid var(--line); margin-top: 4px; padding-top: 8px; border-radius: 0 0 5px 5px; }

.cell-relative { position: relative; }
.cell-relative .popover { right: 4px; top: calc(100% - 6px); }
[x-cloak] { display: none !important; }
.hint { font-size: 12px; color: var(--muted); margin-top: 10px; }

/* --- Components added for the app shell (same idiom as the mockup). --- */
.navbar { background: var(--ink); color: #fff; }
.navbar-inner { max-width: 1180px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; gap: 18px; min-height: 48px; flex-wrap: wrap; }
.navbar .brand { font-weight: 700; font-size: 14px; letter-spacing: 0.02em; color: #fff; text-decoration: none; margin-right: 6px; }
.navbar a.nav-link { color: #c5cbe0; text-decoration: none; font-size: 13px; padding: 14px 2px; border-bottom: 2px solid transparent; }
.navbar a.nav-link:hover { color: #fff; }
.navbar a.nav-link.active { color: #fff; border-bottom-color: var(--accent); }
.navbar .spacer { flex: 1; }
.navbar .user { color: #c5cbe0; font-size: 12.5px; }
.navbar form { margin: 0; }
.navbar .logout-btn { background: none; border: 1px solid #44518c; color: #c5cbe0; border-radius: 6px; padding: 5px 10px; font-size: 12.5px; cursor: pointer; }
.navbar .logout-btn:hover { color: #fff; border-color: #c5cbe0; }

/* Dev role switcher — the navbar avatar and its dropdown (DEBUG only). */
.user-menu { position: relative; display: flex; align-items: center; }
.user-avatar { width: 28px; height: 28px; border-radius: 50%; border: 1px solid #44518c; background: var(--accent-soft); color: var(--accent); font-size: 11px; font-weight: 700; letter-spacing: 0.02em; cursor: pointer; display: flex; align-items: center; justify-content: center; padding: 0; }
.user-avatar:hover { border-color: #c5cbe0; }
.menu-panel { position: absolute; right: 0; top: calc(100% + 8px); width: 300px; max-height: 70vh; overflow-y: auto; background: #fff; border: 1px solid var(--line-strong); border-radius: 8px; box-shadow: 0 6px 18px rgba(20, 24, 40, 0.18); z-index: 30; padding: 6px; color: var(--ink); }
.menu-bosh { padding: 6px 8px 8px; border-bottom: 1px solid var(--line); margin-bottom: 4px; }
.menu-ism { font-size: 13px; font-weight: 600; }
.menu-rol { font-size: 11.5px; color: var(--muted); margin-top: 1px; }
.menu-holat { padding: 10px 8px; font-size: 12.5px; color: var(--muted); }
.menu-group { padding-top: 4px; }
.menu-group-nomi { font-size: 10.5px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); padding: 6px 8px 3px; }
.menu-bosh-joy { padding: 4px 8px 6px; font-size: 12px; color: var(--muted); font-style: italic; }
.menu-panel form { margin: 0; }
.menu-item { display: flex; align-items: baseline; gap: 6px; width: 100%; border: 0; background: none; text-align: left; padding: 6px 8px; border-radius: 5px; font-size: 12.5px; color: var(--ink); cursor: pointer; }
.menu-item:hover { background: var(--accent-soft); }
.menu-item-ism { flex-shrink: 0; }
.menu-item-izoh { flex: 1; color: var(--muted); font-size: 11px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.menu-item.joriy { cursor: default; background: #eef0f4; }
.menu-belgi { font-size: 10.5px; font-weight: 600; color: var(--mand); }
.menu-soat { font-size: 10.5px; font-weight: 600; padding: 1px 5px; border-radius: 3px; font-variant-numeric: tabular-nums; white-space: nowrap; }
.menu-soat.ok { background: var(--mand-soft); color: var(--mand); }
.menu-soat.kam { background: var(--unassigned-soft); color: var(--unassigned); }
.menu-qaytish { border-bottom: 1px solid var(--line); padding-bottom: 4px; margin-bottom: 2px; }
.menu-qaytish .menu-item { color: var(--accent); font-weight: 600; }

/* Impersonation strip — warns you are not yourself, without reading as an error. */
.test-rejimi { display: flex; align-items: center; justify-content: center; gap: 12px; flex-wrap: wrap; padding: 7px 24px; background: var(--elec-soft); border-bottom: 1px solid var(--elec); color: var(--elec); font-size: 12.5px; }
.test-rejimi form { margin: 0; }
.test-rejimi button { background: none; border: 1px solid var(--elec); color: var(--elec); border-radius: 6px; padding: 3px 9px; font-size: 12px; cursor: pointer; }
.test-rejimi button:hover { background: var(--elec); color: #fff; }

.btn { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--line-strong); background: #fff; border-radius: 6px; padding: 8px 14px; font-size: 13px; color: var(--ink); cursor: pointer; text-decoration: none; }
.btn:hover { background: #f5f6f8; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: #b87f1e; }
.btn-danger { background: var(--unassigned); border-color: var(--unassigned); color: #fff; }
.btn-danger:hover { background: #963028; }

.card { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 16px 18px; margin-bottom: 16px; }
.card h2 { font-size: 15px; margin: 0 0 10px; }

.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 420px)); gap: 4px 24px; margin-bottom: 10px; }
.form-field { margin-bottom: 14px; max-width: 420px; }
.form-field-wide { grid-column: 1 / -1; max-width: none; }
.form-field input[type="file"] { max-width: 320px; }
.form-field label { display: block; font-size: 12.5px; font-weight: 600; color: var(--ink-soft); margin-bottom: 4px; }
.form-field input, .form-field select { width: 100%; padding: 8px 10px; border: 1px solid var(--line-strong); border-radius: 6px; font-size: 13px; background: #fff; }
.form-field .helptext { display: block; font-size: 11.5px; color: var(--muted); margin-top: 3px; }
.form-field .errorlist, .form-errors .errorlist { list-style: none; margin: 4px 0 0; padding: 0; color: var(--unassigned); font-size: 12.5px; }
.form-errors { background: var(--unassigned-soft); border: 1px solid var(--unassigned); border-radius: 6px; padding: 10px 12px; margin-bottom: 14px; max-width: 420px; }
@media (max-width: 640px) {
  .form-grid { grid-template-columns: 1fr; }
}
.form-section { margin-bottom: 18px; }
.form-section + .form-section { border-top: 1px solid var(--line); padding-top: 16px; }
.form-section-title { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); margin-bottom: 10px; }
.form-section .form-grid { margin-bottom: 0; }

.messages { list-style: none; margin: 0 0 16px; padding: 0; }
.messages li { border-radius: 6px; padding: 10px 12px; font-size: 13px; margin-bottom: 6px; border: 1px solid var(--line); background: var(--panel); }
.messages li.success { background: var(--mand-soft); border-color: var(--mand); color: var(--mand); }
.messages li.warning { background: var(--elec-soft); border-color: var(--elec); color: var(--elec); }
.messages li.error { background: var(--unassigned-soft); border-color: var(--unassigned); color: var(--unassigned); }

.progress { height: 6px; border-radius: 3px; background: var(--line); overflow: hidden; min-width: 80px; }
.progress .fill { height: 100%; border-radius: 3px; background: var(--mand); }
.progress .fill.warn { background: var(--unassigned); }

.qator-biriktirilmagan .col-code { box-shadow: inset 3px 0 0 var(--unassigned); }

.auth-card { max-width: 360px; margin: 80px auto; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 26px 28px; }
.auth-card h1 { font-size: 17px; margin: 0 0 16px; }
.auth-card .btn-primary { width: 100%; justify-content: center; }

.empty-state { text-align: center; color: var(--muted); padding: 48px 20px; font-size: 13.5px; }

/* Breadcrumbs — subtle trail above the topbar on hierarchy pages. */
.breadcrumb { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; font-size: 12.5px; color: var(--muted); margin-bottom: 12px; }
.breadcrumb a { color: var(--muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--ink); }
.breadcrumb .sep { color: var(--line-strong); }
.breadcrumb .current { color: var(--ink); font-weight: 600; }

/* Removable filter chip — shows active server-side filter state at a glance. */
.chip-removable { display: inline-flex; align-items: center; gap: 6px; background: var(--accent-soft); color: var(--accent); border: 1px solid var(--accent); border-radius: 16px; padding: 4px 6px 4px 12px; font-size: 12.5px; text-decoration: none; }
.chip-removable .x { display: inline-flex; align-items: center; justify-content: center; width: 16px; height: 16px; border-radius: 50%; background: rgba(217, 154, 43, 0.18); font-size: 13px; line-height: 1; }
.chip-removable:hover .x { background: var(--accent); color: #fff; }

/* Density toggle in the navbar. */
.density-toggle { background: none; border: 1px solid #44518c; color: #c5cbe0; border-radius: 6px; padding: 5px 9px; font-size: 12.5px; cursor: pointer; display: inline-flex; align-items: center; gap: 5px; }
.density-toggle:hover { color: #fff; border-color: #c5cbe0; }

/* Loading skeleton — mimics the table shape during HTMX swaps (shimmer, no spinner). */
.htmx-indicator { display: none; }
.htmx-request .htmx-indicator { display: block; }
.htmx-request.htmx-indicator { display: block; }
.skeleton-overlay { position: absolute; inset: 0; z-index: 5; background: var(--paper); }
.skeleton-table { border: 1px solid var(--line); border-radius: 8px; background: var(--panel); overflow: hidden; }
.skeleton-row { display: flex; gap: 14px; padding: 12px 14px; border-bottom: 1px solid var(--line); }
.skeleton-row:last-child { border-bottom: 0; }
.skeleton-row.head { background: #eef0f4; }
.skeleton-bar { height: 12px; border-radius: 4px; background: linear-gradient(90deg, var(--line) 25%, #eceef2 37%, var(--line) 63%); background-size: 400% 100%; animation: skeleton-shimmer 1.4s ease infinite; }
@keyframes skeleton-shimmer { 0% { background-position: 100% 50%; } 100% { background-position: 0 50%; } }

/* Responsive: below 640px, simple list tables (opt-in `.cards`) become stacked cards.
   Wide interactive tables keep horizontal scroll — card-collapse would break inline edit. */
@media (max-width: 640px) {
  .app { padding: 18px 14px 48px; }
  .navbar-inner { padding: 0 14px; }
  .stats, .stats.wide { grid-template-columns: repeat(2, 1fr); }
  .table-wrap.cards { border: 0; background: none; overflow: visible; max-height: none; }
  .table-wrap.cards table { min-width: 0; }
  .table-wrap.cards thead { display: none; }
  .table-wrap.cards tbody tr { display: block; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; margin-bottom: 10px; padding: 4px 0; }
  .table-wrap.cards tbody tr:hover td { background: none; }
  .table-wrap.cards td { display: flex; justify-content: space-between; align-items: center; gap: 14px; border-bottom: 1px solid var(--line); padding: 8px 14px; text-align: right; }
  .table-wrap.cards tr td:last-child { border-bottom: 0; }
  .table-wrap.cards td[data-label]::before { content: attr(data-label); color: var(--muted); font-size: 11.5px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.03em; text-align: left; flex-shrink: 0; }
  .table-wrap.cards td .empty-state { text-align: center; width: 100%; }
}