/* AIBS panel. Dizayn: yon menyu + kartalar; yorug' va qorong'u rejim; mobil uchun moslashgan. */
:root {
  --bg: #f3f5f8;
  --card: #ffffff;
  --text: #1b2430;
  --muted: #67727f;
  --line: #e2e7ee;
  --line-soft: #eef1f5;
  --primary: #1f3a5f;
  --accent: #2d5c91;
  --accent-soft: #e3ecfa;
  --ok: #1e8a4c;
  --ok-soft: #dff3e6;
  --warn: #a8690f;
  --warn-soft: #fdf0d3;
  --err: #c43c3c;
  --err-soft: #fbe0e0;
  --info: #24508a;
  --side-bg: #17273d;
  --side-text: #c9d5e5;
  --side-active: rgba(255, 255, 255, 0.12);
  --radius: 10px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.05);
  --sidebar-w: 236px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1620;
    --card: #16202c;
    --text: #e6ebf2;
    --muted: #94a0ae;
    --line: #273445;
    --line-soft: #1f2a38;
    --primary: #9cc0ea;
    --accent: #6fa3e0;
    --accent-soft: #1d2f45;
    --ok: #4fc47f;
    --ok-soft: #173224;
    --warn: #e2b05a;
    --warn-soft: #3a2e14;
    --err: #ef7a7a;
    --err-soft: #3d1d1d;
    --info: #9cc0ea;
    --side-bg: #0b121b;
    --side-text: #b8c5d6;
    --shadow: none;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg); color: var(--text); font-size: 14.5px; line-height: 1.45;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
a.plain { color: inherit; }
h1 { font-size: 20px; margin: 0; font-weight: 700; }
h2 { font-size: 15.5px; margin: 0 0 10px; font-weight: 700; }
h3 { font-size: 14px; margin: 14px 0 6px; color: var(--muted); text-transform: uppercase; letter-spacing: .03em; font-weight: 600; }
code { font-family: ui-monospace, Consolas, "SF Mono", monospace; font-size: 13px; background: var(--line-soft); padding: 1px 5px; border-radius: 4px; }
.code-pill { font-size: 14px; letter-spacing: .06em; padding: 3px 8px; }

/* ---------- Layout ---------- */
.layout { display: flex; min-height: 100vh; }
.sidebar {
  width: var(--sidebar-w); flex: none; background: var(--side-bg); color: var(--side-text);
  position: sticky; top: 0; height: 100vh; overflow-y: auto; display: flex; flex-direction: column;
}
.brand { display: flex; align-items: center; gap: 10px; padding: 18px 18px 12px; color: #fff; }
.brand .logo {
  width: 36px; height: 36px; border-radius: 10px; background: linear-gradient(135deg, #3b7dd8, #1f3a5f);
  display: inline-flex; align-items: center; justify-content: center; font-weight: 800; font-size: 18px; color: #fff; flex: none;
}
.brand b { display: block; font-size: 16px; line-height: 1.1; }
.brand small { display: block; font-size: 11.5px; opacity: .7; }
.sidebar nav { padding: 6px 10px; flex: 1; }
.nav-group { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; opacity: .55; padding: 14px 10px 4px; }
.sidebar nav a {
  display: flex; align-items: center; gap: 9px; color: var(--side-text); padding: 8px 10px; border-radius: 8px;
  font-size: 14px; margin: 1px 0;
}
.sidebar nav a:hover { background: rgba(255, 255, 255, .07); text-decoration: none; color: #fff; }
.sidebar nav a.active { background: var(--side-active); color: #fff; font-weight: 600; }
.sidebar nav .ic { width: 20px; text-align: center; font-size: 15px; flex: none; }
.sidebar nav .count {
  margin-left: auto; min-width: 22px; padding: 1px 7px; border-radius: 999px; font-size: 12px; font-weight: 700;
  text-align: center; background: rgba(255, 255, 255, .18); color: #fff;
}
.sidebar nav .count.warn { background: #d99a2b; color: #1b1b1b; }
.sidebar nav .count.err { background: #e05252; }
.sidebar nav .count.info { background: #3b7dd8; }
.sidebar-foot { padding: 12px 16px; border-top: 1px solid rgba(255, 255, 255, .1); display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.sidebar-foot .who b { display: block; font-size: 13.5px; color: #fff; }
.sidebar-foot .who small { display: block; font-size: 11.5px; opacity: .7; }
.sidebar-foot .btn.ghost { color: #fff; border-color: rgba(255, 255, 255, .3); }
.content { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.topbar {
  position: sticky; top: 0; z-index: 20; background: var(--card); border-bottom: 1px solid var(--line);
  padding: 0 24px; min-height: 56px; display: flex; align-items: center; gap: 14px;
}
.topbar h1 { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.topbar-actions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.burger { display: none; font-size: 22px; cursor: pointer; padding: 4px 8px; border-radius: 8px; }
.burger:hover { background: var(--line-soft); }
.nav-toggle, .nav-backdrop { display: none; }
main { padding: 20px 24px 40px; max-width: 1320px; width: 100%; }
main.bare { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px; max-width: none; }

@media (max-width: 900px) {
  .sidebar { position: fixed; left: 0; top: 0; z-index: 40; transform: translateX(-100%); transition: transform .2s ease; box-shadow: 0 0 30px rgba(0, 0, 0, .3); }
  .nav-toggle:checked ~ .layout .sidebar { transform: translateX(0); }
  .nav-toggle:checked ~ .nav-backdrop { display: block; position: fixed; inset: 0; background: rgba(0, 0, 0, .45); z-index: 30; }
  .burger { display: inline-block; }
  .topbar { padding: 0 12px; }
  main { padding: 14px 12px 40px; }
  .topbar-actions .btn { padding: 5px 9px; font-size: 13px; }
}

/* ---------- Cards, grid, tiles ---------- */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; margin-bottom: 16px; box-shadow: var(--shadow); }
.card.compact { padding: 12px 14px; }
.grid { display: grid; gap: 16px; }
.grid.cols-2 { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); }
.grid.cols-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid.cols-3-1 { grid-template-columns: minmax(0, 2fr) minmax(260px, 1fr); }
.grid.review { grid-template-columns: minmax(0, 2fr) minmax(260px, 1fr); align-items: start; }
.grid > .card { margin-bottom: 0; }
.grid.cols-2 { margin-bottom: 16px; }
.grid.cols-3-1 { margin-bottom: 16px; }
@media (max-width: 900px) { .grid.cols-3-1, .grid.review { grid-template-columns: 1fr; } }
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 16px; }
.tile { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px; color: inherit; display: block; box-shadow: var(--shadow); }
a.tile:hover { text-decoration: none; border-color: var(--accent); }
.tile .n { font-size: 26px; font-weight: 700; color: var(--primary); line-height: 1.1; }
.tile .n small { font-size: 14px; font-weight: 600; margin-left: 2px; }
.tile .l { color: var(--text); font-size: 13.5px; margin-top: 2px; }
.tile .s { color: var(--muted); font-size: 12px; margin-top: 3px; }
.tile.warn .n { color: var(--warn); }
.tile.err .n { color: var(--err); }

/* ---------- Text helpers ---------- */
.muted { color: var(--muted); }
.small { font-size: 13px; }
.hint { font-size: 12.5px; color: var(--muted); margin: 6px 0 0; }
.late { color: var(--err); font-weight: 600; }
.ok { color: var(--ok); } .warn { color: var(--warn); } .err { color: var(--err); }
.nowrap { white-space: nowrap; }
.ta-r { text-align: right; }
.mt-4 { margin-top: 4px; } .mt-16 { margin-top: 16px; } .ml-24 { margin-left: 24px; }
.w-60 { width: 60px; } .w-70 { width: 70px; } .w-90 { width: 90px; } .w-120 { width: 120px; } .w-150 { width: 150px; }
.w-200 { width: 200px; } .w-260 { width: 260px; }
.grow { flex: 1 1 160px; min-width: 120px; }
.clamp { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ---------- Flash, badges, chips ---------- */
.flash { padding: 10px 14px; border-radius: var(--radius); margin-bottom: 14px; display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.flash.ok { background: var(--ok-soft); color: var(--ok); border: 1px solid rgba(30, 138, 76, .25); }
.flash.err { background: var(--err-soft); color: var(--err); border: 1px solid rgba(196, 60, 60, .25); }
.flash.warn { background: var(--warn-soft); color: var(--warn); border: 1px solid rgba(168, 105, 15, .25); }
.flash-close { background: none; border: none; color: inherit; font-size: 20px; line-height: 1; padding: 0 4px; cursor: pointer; }
.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; background: var(--line-soft); color: var(--muted); white-space: nowrap; vertical-align: middle; }
.badge.ok { background: var(--ok-soft); color: var(--ok); }
.badge.warn { background: var(--warn-soft); color: var(--warn); }
.badge.err { background: var(--err-soft); color: var(--err); }
.badge.info { background: var(--accent-soft); color: var(--info); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.chip { padding: 5px 12px; border-radius: 999px; border: 1px solid var(--line); background: var(--card); color: var(--text); font-size: 13.5px; }
.chip:hover { text-decoration: none; border-color: var(--accent); }
.chip.active { background: var(--side-bg); color: #fff; border-color: var(--side-bg); }
.chip b { font-weight: 600; opacity: .75; margin-left: 2px; }
.callout { background: var(--accent-soft); border-left: 3px solid var(--accent); padding: 8px 12px; border-radius: 6px; margin: 10px 0; }
.callout.ok { background: var(--ok-soft); border-color: var(--ok); }
.callout.err { background: var(--err-soft); border-color: var(--err); }
.empty { text-align: center; color: var(--muted); padding: 18px 10px; }
.empty-icon { width: 34px; height: 34px; border-radius: 50%; background: var(--ok-soft); color: var(--ok); display: inline-flex; align-items: center; justify-content: center; font-weight: 700; margin-bottom: 6px; }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); }
table { width: 100%; border-collapse: collapse; background: var(--card); font-size: 14px; }
td.ta-r, th.ta-r { text-align: right; white-space: nowrap; }
th, td { padding: 8px 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: var(--line-soft); color: var(--muted); font-weight: 600; font-size: 12.5px; white-space: nowrap; }
tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--line-soft); }
table.bars td { border: none; padding: 3px 6px; }
table.bars .w-no { width: 28px; color: var(--muted); }
table.bars .w-title { max-width: 240px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
table.bars .w-bar { width: 45%; }
table.bars .w-n { width: 50px; text-align: right; font-weight: 600; }
table.editor th { font-size: 12px; }
table.editor td:first-child { min-width: 220px; }
table.editor td { padding: 4px 6px; vertical-align: top; }
table.editor input, table.editor select { padding: 6px 8px; }
.bar { height: 8px; background: var(--line-soft); border-radius: 4px; overflow: hidden; min-width: 60px; }
.bar span { display: block; height: 100%; background: var(--accent); border-radius: 4px; }
.bar.ok span { background: var(--ok); }
.bar.warn span { background: var(--warn); }
.pager { display: flex; gap: 8px; align-items: center; margin: 12px 0; }

/* ---------- Forms, buttons ---------- */
button, .btn {
  display: inline-block; border: 1px solid var(--accent); background: var(--accent); color: #fff;
  padding: 8px 14px; border-radius: 8px; font-size: 14px; cursor: pointer; text-decoration: none; line-height: 1.2; font-family: inherit;
}
button:hover, .btn:hover { filter: brightness(.93); text-decoration: none; }
button:disabled { opacity: .5; cursor: not-allowed; }
.btn.ok, button.ok { background: var(--ok); border-color: var(--ok); color: #fff; }
.btn.err, button.err { background: var(--err); border-color: var(--err); color: #fff; }
.btn.warn, button.warn { background: var(--warn); border-color: var(--warn); color: #fff; }
.btn.ghost, button.ghost { background: transparent; color: var(--accent); border-color: var(--line); }
.btn.ghost.err, button.ghost.err { color: var(--err); }
.btn.sm, button.sm { padding: 5px 10px; font-size: 13px; }
button.link { background: none; border: none; color: var(--accent); padding: 0; font-size: 13px; cursor: pointer; text-decoration: underline dotted; }
input[type=text], input[type=number], input[type=password], input[type=datetime-local], input[type=date], input[type=time],
input[type=url], input[type=search], select, textarea {
  width: 100%; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; font-size: 14px; font-family: inherit;
  background: var(--card); color: var(--text);
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
textarea { min-height: 80px; resize: vertical; }
textarea.code { font-family: ui-monospace, Consolas, monospace; font-size: 12.5px; min-height: 220px; }
label { display: block; font-size: 12.5px; color: var(--muted); margin: 10px 0 4px; }
label.check, label.radio { display: inline-flex; align-items: center; gap: 6px; color: var(--text); font-size: 14px; margin: 6px 14px 0 0; cursor: pointer; }
label.check input, label.radio input { width: auto; margin: 0; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row.tight { gap: 6px; }
.row > * { margin: 0; }
.row input, .row select, .filters input, .filters select { width: auto; }
.filters { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 14px; }
.filters .check { margin: 0; }
form.inline { display: inline; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; align-items: center; }
.sticky-actions { position: sticky; bottom: 0; background: var(--card); padding: 10px 14px; border: 1px solid var(--line); border-radius: var(--radius); margin: 12px 0; box-shadow: 0 -4px 16px rgba(0, 0, 0, .06); z-index: 5; }
fieldset.plain { border: none; padding: 0; margin: 0; min-width: 0; }
fieldset:disabled input, fieldset:disabled textarea, fieldset:disabled select { background: var(--line-soft); }
.radios { display: flex; flex-wrap: wrap; gap: 4px 14px; }
.radios.col { flex-direction: column; align-items: flex-start; }
.radios .radio { margin: 4px 0; }
.quick { display: flex; flex-wrap: wrap; gap: 6px 12px; margin-top: 6px; }
.kv > div { display: flex; justify-content: space-between; gap: 12px; padding: 6px 0; border-bottom: 1px dashed var(--line); font-size: 14px; }
.kv > div:last-child { border-bottom: none; }
.kv span { color: var(--muted); flex: none; }
.kv b { font-weight: 600; text-align: right; word-break: break-word; }

/* ---------- Dashboard ---------- */
.tasks { list-style: none; padding: 0; margin: 0; }
.task { padding: 8px 12px; border-left: 3px solid var(--line); margin-bottom: 6px; background: var(--line-soft); border-radius: 0 8px 8px 0; display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; align-items: baseline; }
.task a { color: var(--text); }
.task b { font-size: 16px; }
.task.err { border-color: var(--err); } .task.err b { color: var(--err); }
.task.warn { border-color: var(--warn); } .task.warn b { color: var(--warn); }
.task.info { border-color: var(--accent); } .task.info b { color: var(--accent); }
.task .hint { margin: 0; }
.chart { display: flex; align-items: stretch; gap: 4px; height: 170px; padding-top: 6px; }
.chart .col { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.chart .col-v { order: 0; font-size: 11px; color: var(--muted); text-align: center; height: 14px; }
.chart .col-bar { order: 1; flex: 1; display: flex; align-items: flex-end; }
.chart .col-bar span { display: block; width: 100%; background: var(--accent); border-radius: 4px 4px 0 0; min-height: 2px; opacity: .9; }
.chart .col:hover .col-bar span { opacity: 1; filter: brightness(1.1); }
.chart .col-l { order: 2; font-size: 11px; color: var(--muted); text-align: center; height: 16px; border-top: 1px solid var(--line); padding-top: 3px; white-space: nowrap; }
.status-card .kv b { font-weight: 600; }

/* ---------- Submission card ---------- */
.sub-card { border-left: 4px solid var(--warn); }
.sub-card:has(.badge.ok) { border-left-color: var(--line); }
.sub-head { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; align-items: flex-start; }
.sub-badges { display: flex; gap: 6px; flex-wrap: wrap; }
.meta { display: flex; flex-wrap: wrap; gap: 10px 22px; margin: 10px 0; }
.meta > div { display: flex; flex-direction: column; }
.meta span { font-size: 12px; color: var(--muted); }
.meta small { font-size: 12px; color: var(--muted); }
.checklist { list-style: none; padding: 0; margin: 10px 0; }
.checklist li { display: flex; gap: 8px; align-items: flex-start; padding: 6px 0; border-bottom: 1px dashed var(--line); }
.checklist li:last-child { border-bottom: none; }
.checklist .mark { width: 20px; height: 20px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700; flex: none; margin-top: 1px; }
.checklist .ok .mark { background: var(--ok-soft); color: var(--ok); }
.checklist .miss .mark { background: var(--warn-soft); color: var(--warn); }
.checklist .answer { white-space: pre-wrap; margin-top: 2px; }
.checklist li > b { margin-right: 4px; }
.files { display: flex; gap: 12px; flex-wrap: wrap; margin: 10px 0; }
.thumb { display: flex; flex-direction: column; gap: 4px; width: 200px; color: var(--muted); font-size: 12px; }
.thumb img { width: 100%; height: 150px; object-fit: cover; border-radius: 8px; border: 1px solid var(--line); background: var(--line-soft); }
.thumb:hover img { border-color: var(--accent); }
.video-box { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--muted); }
.video-box video { width: 320px; max-width: 100%; border-radius: 8px; background: #000; }
.files .doc { display: inline-block; padding: 10px 12px; border: 1px dashed var(--line); border-radius: 8px; align-self: flex-start; }
.prev summary { cursor: pointer; color: var(--accent); }
.prev ul { margin: 6px 0 0; padding-left: 18px; font-size: 13.5px; }
.decision { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--line); }
.decide { padding-left: 12px; border-left: 3px solid var(--line); }
.decide.accept { border-color: var(--ok); }
.decide.reject { border-color: var(--err); }
.decide label:first-child { margin-top: 0; }
@media (max-width: 700px) { .decision { grid-template-columns: 1fr; } }
.progress-dots { display: flex; flex-wrap: wrap; gap: 4px; margin: 8px 0; }
.progress-dots span { display: inline-block; min-width: 28px; text-align: center; padding: 3px 4px; border-radius: 6px; font-size: 12.5px; background: var(--line-soft); color: var(--muted); font-weight: 600; }
.progress-dots .accepted { background: var(--ok-soft); color: var(--ok); }
.progress-dots .open, .progress-dots .open_pending { background: var(--accent-soft); color: var(--info); }
.progress-dots .submitted { background: var(--warn-soft); color: var(--warn); }
.dot { padding: 0 6px; border-radius: 4px; }
.dot.ok { background: var(--ok-soft); color: var(--ok); } .dot.warn { background: var(--warn-soft); color: var(--warn); } .dot.info { background: var(--accent-soft); color: var(--info); }
.rules { padding-left: 18px; margin: 0; } .rules li { margin-bottom: 4px; }

/* ---------- Student ---------- */
.student-head { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 14px; }
.stat-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin-bottom: 12px; }
.stat-row > div > span { font-size: 12px; color: var(--muted); display: block; }
.stat-row b { display: block; font-size: 18px; margin: 2px 0 6px; }
.stat-row small { display: block; margin-top: 4px; font-size: 12px; }
.action-block { padding: 10px 0; border-bottom: 1px dashed var(--line); }
.action-block:last-child { border-bottom: none; }
.action-block > label:first-child { margin-top: 0; }
.owner-tools { background: var(--line-soft); margin: 10px -8px 0; padding: 10px 8px; border-radius: 8px; }

/* ---------- Threads ---------- */
.thread { margin: 8px 0; }
.thread-head { font-size: 13px; margin-bottom: 4px; }
.msg { padding: 8px 12px; border-radius: 10px; margin: 6px 0; background: var(--line-soft); white-space: pre-wrap; max-width: 760px; }
.msg.student { background: var(--accent-soft); }
.msg.admin, .msg.owner { background: var(--ok-soft); }
.msg .who { display: block; font-size: 12px; color: var(--muted); margin-bottom: 2px; white-space: normal; }

/* ---------- Telegram preview ---------- */
.tg-preview .tg-msg { background: var(--accent-soft); border-radius: 12px 12px 12px 2px; padding: 12px 14px; font-size: 14px; max-width: 560px; line-height: 1.5; }

/* ---------- Login, error, dialogs ---------- */
.login { width: 100%; max-width: 440px; }
.login-brand { padding: 0 0 10px; color: var(--text); }
.login-brand b, .login-brand small { color: inherit; }
.login p { margin: 8px 0; }
.error-card { max-width: 520px; margin: 40px auto; text-align: center; }
.error-code { font-size: 48px; font-weight: 800; color: var(--accent); line-height: 1; margin-bottom: 8px; }
dialog.lightbox { border: none; padding: 0; background: transparent; max-width: 96vw; }
dialog.lightbox::backdrop { background: rgba(0, 0, 0, .78); }
.lightbox img { max-width: 96vw; max-height: 86vh; border-radius: 8px; display: block; }
.lightbox form { text-align: center; margin-top: 8px; }
details > summary { cursor: pointer; color: var(--accent); margin: 8px 0; }
pre { white-space: pre-wrap; word-break: break-word; background: var(--line-soft); padding: 10px; border-radius: 8px; font-size: 13px; }

@media (max-width: 700px) {
  th, td { padding: 6px 8px; font-size: 13px; }
  .stat-row { grid-template-columns: 1fr; }
  .tiles { grid-template-columns: repeat(2, 1fr); }
  .tile .n { font-size: 22px; }
}
@media print {
  .sidebar, .topbar, .burger, .sticky-actions, .decision { display: none !important; }
  main { padding: 0; }
  .card { break-inside: avoid; }
}