:root {
  --bg: #f4f1ea;
  --bg-elev: #fffcf7;
  --text: #1a2332;
  --muted: #5c6b7a;
  --accent: #1a4d8f;
  --accent-soft: #e8f0fa;
  --border: #d9e0ea;
  --danger: #b42318;
  --shadow: 0 12px 40px rgba(26, 35, 50, 0.08);
  --radius: 18px;
  --font: "Segoe UI", "PT Root UI", system-ui, sans-serif;
}

[data-theme="dark"] {
  --bg: #0f1419;
  --bg-elev: #1a2332;
  --text: #e8eef5;
  --muted: #9aabbd;
  --accent: #6db3ff;
  --accent-soft: #1c2f4a;
  --border: #2a3a4d;
  --danger: #ff8a7a;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
}
a { color: var(--accent); }
button, input, select {
  font: inherit;
}

.login-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(ellipse at 20% 10%, rgba(26, 77, 143, 0.18), transparent 50%),
    radial-gradient(ellipse at 80% 90%, rgba(26, 77, 143, 0.12), transparent 45%),
    var(--bg);
}

.card {
  width: min(420px, 100%);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px 28px 24px;
}

.brand {
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 4px;
}
.tagline {
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 0.95rem;
}

label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0 0 6px;
}
.field { margin-bottom: 14px; }
.field input[type="text"],
.field input[type="password"],
.field input[type="number"] {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
}
.pw-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}
.btn {
  appearance: none;
  border: none;
  border-radius: 12px;
  padding: 11px 16px;
  cursor: pointer;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}
.btn.secondary {
  background: var(--accent-soft);
  color: var(--accent);
}
.btn.ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
}
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: 12px;
}
.theme-toggle .theme-icon {
  display: none;
  line-height: 0;
}
/* Светлая тема: показать луну (переключить на тёмную) */
html[data-theme="light"] .theme-toggle .theme-icon-moon { display: block; }
/* Тёмная тема: показать солнце (переключить на светлую) */
html[data-theme="dark"] .theme-toggle .theme-icon-sun { display: block; }
.btn:disabled {
  opacity: 0.55;
  cursor: wait;
}
.btn-block { width: 100%; margin-top: 8px; }
.error {
  background: rgba(180, 35, 24, 0.1);
  color: var(--danger);
  border-radius: 10px;
  padding: 10px 12px;
  margin-bottom: 12px;
  font-size: 0.9rem;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-elev) 92%, transparent);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 5;
}
.topbar-left { display: flex; align-items: baseline; gap: 10px; }
.topbar .brand { font-size: 1.15rem; margin: 0; }
.topbar .sub { color: var(--muted); font-size: 0.85rem; }
.top-actions { display: flex; gap: 8px; align-items: center; }

.workspace {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 0;
  min-height: 0;
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
}

.sources-panel {
  padding: 22px 16px 120px 20px;
  border-right: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-elev) 70%, transparent);
}
.sources-title {
  margin: 0 0 6px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.sources-note {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.35;
}
.sources-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.sources-list li {
  display: block;
}
.src-chk {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin: 0;
  cursor: pointer;
  color: var(--text);
}
.src-chk input {
  margin-top: 4px;
  flex-shrink: 0;
  accent-color: var(--accent);
}
.src-dot {
  width: 8px;
  height: 8px;
  margin-top: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
  display: none;
}
.src-name {
  font-weight: 600;
  font-size: 0.92rem;
  display: block;
}
.src-desc {
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.35;
  margin-top: 2px;
  display: block;
}
.sources-foot {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 0.75rem;
  line-height: 1.4;
}

.chat {
  max-width: 880px;
  width: 100%;
  margin: 0 auto;
  padding: 20px 16px 140px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.bubble.welcome {
  white-space: normal;
}
.welcome-hi {
  margin: 0 0 8px;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.bubble.welcome p {
  margin: 0 0 8px;
}
.welcome-hint {
  color: var(--muted);
  font-size: 0.92rem;
}

.bubble {
  border-radius: 16px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  box-shadow: var(--shadow);
  white-space: pre-wrap;
  line-height: 1.45;
  font-size: 0.95rem;
}
.bubble.user {
  align-self: flex-end;
  max-width: 85%;
  background: var(--accent-soft);
  border-color: transparent;
}
.bubble.assistant {
  align-self: stretch;
}
.bubble .meta {
  color: var(--muted);
  font-size: 0.8rem;
  margin-bottom: 8px;
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.composer {
  position: sticky;
  bottom: 0;
  border-top: 1px solid var(--border);
  background: var(--bg-elev);
  padding: 12px 16px 16px;
}
.composer-inner {
  max-width: 880px;
  margin: 0 auto;
}
.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 16px;
  align-items: center;
  margin-bottom: 10px;
  font-size: 0.9rem;
  color: var(--muted);
}
.controls label.chk {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 0;
  color: var(--text);
}
.controls input[type="number"] {
  width: 72px;
  padding: 6px 8px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
}
.report-mods {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  align-items: center;
  margin-bottom: 10px;
  padding: 8px 10px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg);
  font-size: 0.88rem;
}
.report-mods-label {
  font-weight: 600;
  color: var(--text);
  margin-right: 4px;
}
.report-mods .chk {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text);
  margin: 0;
}
.report-mods-hint {
  flex-basis: 100%;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.35;
}
.topic-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}
.topic-row textarea {
  width: 100%;
  min-height: 56px;
  resize: vertical;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
}
.status {
  margin-top: 8px;
  font-size: 0.85rem;
  color: var(--muted);
  min-height: 1.2em;
}

.md-body h1, .md-body h2, .md-body h3 {
  margin: 0.6em 0 0.35em;
  line-height: 1.25;
}
.md-body p, .md-body li { margin: 0.25em 0; }
.md-body a { word-break: break-all; }
.md-body ul { padding-left: 1.2em; }

@media (max-width: 860px) {
  .workspace {
    grid-template-columns: 1fr;
  }
  .sources-panel {
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 16px 16px 12px;
  }
  .sources-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 10px 18px;
  }
  .sources-foot { display: none; }
}

@media (max-width: 640px) {
  .topic-row { grid-template-columns: 1fr; }
  .topbar { flex-wrap: wrap; }
}