/* ===== Tokens ===== */
:root {
  --bg: #eef1f5;
  --surface: #ffffff;
  --surface-2: #f6f8fb;
  --ink: #1b2430;
  --muted: #5d6878;
  --line: #d7dde6;
  --blue: #1f5bb5;
  --blue-ink: #ffffff;
  --blue-soft: #e5edf9;
  --mark: #f2c230;          /* жёлтая разметка: ссылки на кодекс */
  --admin: #0f7a5c;
  --admin-soft: #e3f3ec;
  --danger: #b42318;
  --danger-soft: #fdecea;
  --warn-soft: #fff6d9;
  --radius-s: 6px;
  --radius-m: 10px;
  --radius-l: 16px;
  --font: "Rubik", "Segoe UI", "Arial Hebrew", Arial, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #11161d;
    --surface: #19202a;
    --surface-2: #1f2733;
    --ink: #e6ebf2;
    --muted: #9aa6b6;
    --line: #2c3644;
    --blue: #5b93e6;
    --blue-ink: #0d1520;
    --blue-soft: #1d2b40;
    --mark: #e2b92c;
    --admin: #4cc39b;
    --admin-soft: #15302a;
    --danger: #f27b70;
    --danger-soft: #3a1d1b;
    --warn-soft: #3a3218;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { line-height: 1.25; margin: 0; font-weight: 600; }
.muted { color: var(--muted); }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }

input, select, textarea, button { font: inherit; color: inherit; }
input, select, textarea {
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  background: var(--surface);
}
textarea { resize: vertical; }
label { display: grid; gap: 5px; font-size: 13px; color: var(--muted); }
label.check { display: flex; align-items: center; gap: 8px; color: var(--ink); font-size: 14px; }
label.check input { width: auto; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 9px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  background: var(--surface);
  cursor: pointer;
  font-weight: 500;
  white-space: nowrap;
}
.btn:hover { background: var(--surface-2); }
.btn-primary { background: var(--blue); border-color: var(--blue); color: var(--blue-ink); }
.btn-primary:hover { background: var(--blue); filter: brightness(1.08); }
.btn-danger { color: var(--danger); }
.btn-sm { padding: 5px 10px; font-size: 13px; }
.btn-block { width: 100%; }
.btn:disabled { opacity: .55; cursor: default; }
.link-btn {
  background: none; border: 0; padding: 4px 2px; cursor: pointer;
  color: var(--blue); text-decoration: none; font-size: 14px;
}
.link-btn:hover { text-decoration: underline; }
.icon-btn { background: none; border: 0; font-size: 20px; cursor: pointer; padding: 6px 10px; }

.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; }
.brand-mark {
  display: grid; place-items: center;
  width: 44px; height: 44px;
  border-radius: var(--radius-m);
  background: var(--blue); color: var(--blue-ink);
  font-weight: 700; font-size: 24px;
}
.brand-mark.sm { width: 30px; height: 30px; font-size: 16px; border-radius: 7px; }

.form-error { color: var(--danger); background: var(--danger-soft); padding: 8px 10px; border-radius: var(--radius-s); margin: 0; font-size: 14px; }
.notice { background: var(--admin-soft); color: var(--ink); padding: 8px 10px; border-radius: var(--radius-s); margin: 0; }

/* ===== Login ===== */
.login { min-height: 100%; display: grid; place-items: center; padding: 24px; }
.login-card {
  width: min(380px, 100%);
  display: grid; gap: 14px;
  padding: 32px 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
}
.login-card h1 { font-size: 24px; }
.login-card p { margin: 0; }
.login-card .link-btn { justify-self: center; }

/* ===== Chat layout ===== */
.page-chat { overflow: hidden; }
.chat-app { display: grid; grid-template-columns: 290px 1fr; height: 100dvh; }
.sidebar {
  display: flex; flex-direction: column; gap: 12px;
  padding: 16px 14px;
  padding-top: max(16px, env(safe-area-inset-top));
  padding-bottom: max(14px, env(safe-area-inset-bottom));
  background: var(--surface);
  border-inline-end: 1px solid var(--line);
  min-height: 0;
}
.sidebar-head { padding: 2px 4px 6px; }
.side-title { font-size: 13px; font-weight: 500; color: var(--muted); padding: 6px 4px 0; }
.conv-list { flex: 1; overflow-y: auto; display: grid; align-content: start; gap: 2px; margin-inline: -4px; }
.conv-item {
  display: grid; gap: 2px;
  text-align: start;
  padding: 8px 10px;
  border: 0; border-radius: var(--radius-s);
  background: none; cursor: pointer;
}
.conv-item:hover { background: var(--surface-2); }
.conv-item.active { background: var(--blue-soft); }
.conv-item .t { font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.conv-item .s { font-size: 12px; color: var(--muted); display: flex; gap: 6px; align-items: center; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--admin); flex: none; }
.side-empty { color: var(--muted); font-size: 13px; padding: 6px; }
.sidebar-foot { border-top: 1px solid var(--line); padding-top: 12px; display: grid; gap: 6px; }
.who { font-weight: 500; font-size: 14px; }
.foot-actions { display: flex; flex-wrap: wrap; gap: 10px; }

.chat { display: grid; grid-template-rows: auto 1fr auto; min-height: 0; min-width: 0; }
.chat-head {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 20px;
  padding-top: max(12px, env(safe-area-inset-top));
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}
#menu-btn { display: none; }
.chat-head-title { display: flex; align-items: center; gap: 10px; min-width: 0; }
.chat-head-title strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 500; }
.codex-tag {
  flex: none; font-size: 12px; padding: 2px 8px;
  border-radius: 999px; background: var(--blue-soft); color: var(--blue);
}

.messages { overflow-y: auto; padding: 24px 20px; display: flex; flex-direction: column; gap: 14px; }
.messages > * { width: 100%; max-width: 760px; margin-inline: auto; }

.empty { margin-block: auto; display: grid; gap: 10px; padding: 20px 0; }
.empty h1 { font-size: 28px; font-weight: 600; letter-spacing: -.01em; }
.empty p { margin: 0; max-width: 56ch; }
.codex-pick { max-width: 320px; margin-top: 8px; }

.msg { display: grid; gap: 6px; }
.msg .bubble { padding: 11px 14px; border-radius: var(--radius-m); white-space: pre-wrap; overflow-wrap: anywhere; }
.msg-user { justify-items: end; }
.msg-user .bubble { background: var(--blue); color: var(--blue-ink); max-width: 85%; border-end-end-radius: 3px; }
.msg-assistant .bubble {
  background: var(--surface);
  border: 1px solid var(--line);
  border-inline-start: 4px solid var(--mark);
}
.msg-admin .bubble {
  background: var(--admin-soft);
  border: 1px solid var(--admin);
  border-inline-start: 4px solid var(--admin);
}
.msg-label { font-size: 12px; font-weight: 600; color: var(--admin); }
.msg-error .bubble { background: var(--danger-soft); color: var(--danger); }
.msg-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; font-size: 12px; color: var(--muted); }
.badge {
  display: inline-block; font-size: 12px; padding: 1px 8px; border-radius: 999px;
  background: var(--warn-soft); color: var(--ink); border: 1px solid var(--mark);
}
.badge-ok { background: var(--admin-soft); border-color: var(--admin); }
.badge-off { background: var(--surface-2); border-color: var(--line); color: var(--muted); }
.badge-bad { background: var(--danger-soft); border-color: var(--danger); color: var(--danger); }

.thinking .bubble { color: var(--muted); }
.thinking .bubble::after { content: "…"; animation: blink 1.2s steps(4) infinite; display: inline-block; width: 1.2em; text-align: start; }
@keyframes blink { 0% { opacity: .2; } 50% { opacity: 1; } 100% { opacity: .2; } }
@media (prefers-reduced-motion: reduce) { .thinking .bubble::after { animation: none; } }

.feedback-box { display: grid; gap: 8px; padding: 10px; border: 1px dashed var(--line); border-radius: var(--radius-s); }

.composer {
  display: flex; gap: 10px; align-items: flex-end;
  padding: 12px 20px;
  padding-bottom: max(12px, env(safe-area-inset-bottom));
  border-top: 1px solid var(--line);
  background: var(--surface);
}
.composer textarea { max-height: 180px; min-height: 42px; resize: none; }
.composer { justify-content: center; }
.composer textarea { flex: 1; max-width: 660px; }

.scrim { display: none; }

@media (max-width: 820px) {
  .chat-app { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed; inset-block: 0; inset-inline-start: 0; z-index: 20;
    width: min(300px, 86vw);
    transform: translateX(-105%);
    transition: transform .2s ease;
  }
  [dir="rtl"] .sidebar { transform: translateX(105%); }
  .sidebar.open, [dir="rtl"] .sidebar.open { transform: none; }
  .scrim { display: block; position: fixed; inset: 0; background: rgb(0 0 0 / .35); z-index: 15; }
  #menu-btn { display: inline-block; }
  .chat-head, .messages, .composer { padding-inline: 12px; }
  .empty h1 { font-size: 23px; }
}

/* ===== Admin ===== */
.page-admin { min-height: 100%; }
.admin-top {
  position: sticky; top: 0; z-index: 10;
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px;
  padding: 12px 24px;
  padding-top: max(12px, env(safe-area-inset-top));
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.tabs { display: flex; gap: 2px; overflow-x: auto; flex: 1; min-width: 0; }
.tabs button {
  border: 0; background: none; cursor: pointer;
  padding: 8px 12px; border-radius: var(--radius-s);
  color: var(--muted); white-space: nowrap; font-weight: 500;
}
.tabs button:hover { color: var(--ink); background: var(--surface-2); }
.tabs button[aria-selected="true"] { color: var(--ink); background: var(--blue-soft); }
.count {
  display: inline-grid; place-items: center; min-width: 20px; height: 20px; padding: 0 6px;
  border-radius: 999px; background: var(--danger); color: #fff; font-size: 12px; margin-inline-start: 4px;
}
.top-actions { display: flex; gap: 14px; }

.admin-main { max-width: 1180px; margin: 0 auto; padding: 24px; display: grid; gap: 18px; }
.admin-main > *, #hist-table { min-width: 0; }
#hist-table { display: grid; gap: 12px; }
a.btn { text-decoration: none; color: inherit; }
.toolbar { display: flex; flex-wrap: wrap; align-items: end; gap: 10px; justify-content: space-between; }
.toolbar h2 { font-size: 20px; }
.filters {
  display: grid; gap: 10px; align-items: end;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  padding: 14px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-m);
}
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: var(--radius-s); overflow: hidden; }
.seg button { border: 0; background: var(--surface); padding: 7px 14px; cursor: pointer; color: var(--muted); }
.seg button + button { border-inline-start: 1px solid var(--line); }
.seg button.on { background: var(--blue-soft); color: var(--ink); }

.table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-m); }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 10px 12px; text-align: start; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-weight: 500; color: var(--muted); font-size: 13px; background: var(--surface-2); white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
td.num { font-variant-numeric: tabular-nums; }
td.actions { white-space: nowrap; text-align: end; }
td.actions .btn + .btn { margin-inline-start: 6px; }
.clip { max-width: 360px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.empty-row { padding: 28px; text-align: center; color: var(--muted); }

.stats { display: flex; flex-wrap: wrap; gap: 28px; padding: 4px 2px; }
.stat b { display: block; font-size: 26px; font-weight: 600; font-variant-numeric: tabular-nums; }
.stat span { font-size: 13px; color: var(--muted); }

.review-list { display: grid; gap: 12px; }
.review {
  display: grid; gap: 10px;
  padding: 16px; background: var(--surface);
  border: 1px solid var(--line); border-inline-start: 4px solid var(--mark);
  border-radius: var(--radius-m);
}
.review-head { display: flex; flex-wrap: wrap; gap: 8px 14px; align-items: center; font-size: 13px; color: var(--muted); }
.review-head strong { color: var(--ink); font-size: 14px; }
.review .q { font-weight: 500; white-space: pre-wrap; }
.review .a { white-space: pre-wrap; color: var(--muted); font-size: 14px; max-height: 8.5em; overflow: auto; }

.pager { display: flex; gap: 8px; justify-content: center; }

.settings-form { display: grid; gap: 16px; max-width: 640px; padding: 20px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-m); }
.settings-form h3 { font-size: 16px; padding-top: 6px; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 820px) {
  .admin-top { gap: 10px 16px; }
  .top-actions { margin-inline-start: auto; }
  .tabs { order: 3; flex-basis: 100%; margin-inline: -6px; }
}
@media (max-width: 600px) { .row2 { grid-template-columns: 1fr; } .admin-main { padding: 14px; } .admin-top { padding-inline: 14px; } }

/* Dialog */
.dlg {
  width: min(680px, calc(100vw - 24px));
  max-height: calc(100dvh - 40px);
  padding: 0; border: 1px solid var(--line); border-radius: var(--radius-l);
  background: var(--surface); color: var(--ink);
}
.dlg.wide { width: min(980px, calc(100vw - 24px)); }
.dlg::backdrop { background: rgb(10 15 22 / .45); }
.dlg form, .dlg .dlg-body { display: grid; gap: 14px; padding: 22px; }
.dlg h2 { font-size: 19px; }
.dlg-actions { display: flex; gap: 10px; justify-content: flex-end; flex-wrap: wrap; }
.dlg textarea.big { min-height: 46vh; font-size: 14px; line-height: 1.5; }
.hint { font-size: 13px; color: var(--muted); margin: 0; }
.pdf-progress { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; padding: 10px 12px;
  background: var(--blue-soft); border-radius: var(--radius-s); font-size: 14px; }
.pdf-status::before { content: ""; display: inline-block; width: 10px; height: 10px; margin-inline-end: 8px;
  border-radius: 50%; background: var(--blue); animation: blink 1.2s infinite; }
.conv-view { display: grid; gap: 12px; max-height: 65vh; overflow-y: auto; }

.toast {
  position: fixed; inset-inline: 0; bottom: max(20px, env(safe-area-inset-bottom)); margin: 0 auto;
  width: fit-content; max-width: 90vw;
  padding: 10px 18px; border-radius: var(--radius-m);
  background: var(--ink); color: var(--bg); z-index: 50; font-size: 14px;
}