:root,
html[data-theme="dark"] {
  --bg: #0f1419;
  --bg-elev: #151c24;
  --bg-soft: #1a2330;
  --fg: #e8eef4;
  --muted: #8b9aab;
  --line: color-mix(in srgb, #8b9aab 28%, transparent);
  --accent: #3dd6c6;
  --accent-dim: color-mix(in srgb, var(--accent) 28%, transparent);
  --warn: #e2b15a;
  --danger: #e07a7a;
  --ok: #6dcc8a;
  --tile: color-mix(in srgb, var(--bg-elev) 88%, transparent);
  --radius: 0.65rem;
  --font: "Manrope", system-ui, sans-serif;
  --serif: "Source Serif 4", Georgia, serif;
  --nav-w: 15rem;
  --base-size: 15px;
  --resize-line: var(--line);
  --resize-line-hot: var(--accent);
  --resize-line-size: 1px;
  --resize-hit: 10px;
}

html[data-theme="light"] {
  --bg: #f3f6f8;
  --bg-elev: #ffffff;
  --bg-soft: #e8eef3;
  --fg: #1a2430;
  --muted: #5d6b7a;
  --line: color-mix(in srgb, #5d6b7a 22%, transparent);
  --accent: #0f9e90;
  --accent-dim: color-mix(in srgb, var(--accent) 22%, transparent);
  --warn: #b07a20;
  --danger: #c44d4d;
  --ok: #2f9a55;
  --tile: #ffffff;
}

html[data-font="sm"] { --base-size: 13.5px; }
html[data-font="md"] { --base-size: 15px; }
html[data-font="lg"] { --base-size: 17px; }
html[data-density="compact"] .result-item,
html[data-density="compact"] .wiki-item,
html[data-density="compact"] .setting-row,
html[data-density="compact"] .tile {
  padding-top: 0.55rem;
  padding-bottom: 0.55rem;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
html { overflow-x: hidden; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--fg);
  background:
    radial-gradient(ellipse 70% 50% at 0% 0%, color-mix(in srgb, var(--accent) 18%, transparent) 0%, transparent 55%),
    radial-gradient(ellipse 55% 45% at 100% 100%, color-mix(in srgb, #3a5a8c 22%, transparent) 0%, transparent 50%),
    var(--bg);
  font-size: var(--base-size);
  line-height: 1.45;
  max-width: 100vw;
  overflow-x: hidden;
}

button, input, textarea, select {
  font: inherit;
  color: inherit;
}

#app { min-height: 100%; max-width: 100%; }

.view-login {
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 1.25rem;
}
.login-stage {
  width: min(26rem, 100%);
  text-align: center;
  animation: rise 0.55s ease-out both;
}
.brand {
  margin: 0;
  font-weight: 750;
  letter-spacing: -0.03em;
  line-height: 1;
}
.brand span { color: var(--accent); }
.brand-lg { font-size: clamp(1.8rem, 7vw, 3rem); margin-bottom: 1rem; }
.login-title {
  margin: 0 0 0.65rem;
  font-size: clamp(1.1rem, 4vw, 1.25rem);
  font-weight: 650;
}
.login-lead {
  margin: 0 auto 1.5rem;
  color: var(--muted);
  max-width: 24rem;
}
.login-form {
  display: grid;
  gap: 0.85rem;
  text-align: left;
}
.login-form label { display: grid; gap: 0.35rem; }
.login-form span { color: var(--muted); font-size: 0.85rem; }
.login-form input,
.search-bar input,
.composer textarea,
.setting-row select {
  width: 100%;
  max-width: 100%;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg-elev) 80%, transparent);
  border-radius: var(--radius);
  padding: 0.7rem 0.85rem;
  outline: none;
}
.login-form input:focus,
.search-bar input:focus,
.composer textarea:focus,
.setting-row select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.proto-note {
  margin: 1.25rem 0 0;
  color: var(--muted);
  font-size: 0.8rem;
}

.shell {
  display: grid;
  grid-template-columns: var(--nav-w) minmax(0, 1fr);
  height: 100vh;
  height: 100dvh;
  min-height: 100dvh;
  max-height: 100dvh;
  width: 100%;
  max-width: 100vw;
  overflow: hidden;
  transition: grid-template-columns 0.2s ease;
}
.shell[hidden] { display: none !important; }
.shell.nav-collapsed { --nav-w: 4.4rem; }

.nav {
  border-right: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg-elev) 72%, transparent);
  backdrop-filter: blur(10px);
  padding: 1rem 0.85rem;
  display: flex;
  flex-direction: column;
  height: 100%;
  max-height: 100dvh;
  position: sticky;
  top: 0;
  align-self: stretch;
  overflow: hidden;
  animation: slide-in 0.45s ease-out both;
  min-width: 0;
  /* Боковое (левое) меню: не уезжает вниз при длинном контенте справа */
}
.nav-top {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 0.55rem;
  padding: 0 0.35rem 0.85rem;
}
.nav-brand {
  font-weight: 750;
  font-size: 1.15rem;
  letter-spacing: -0.03em;
  white-space: nowrap;
  overflow: hidden;
  min-width: 0;
}
.nav-brand span { color: var(--accent); }
.nav-collapse,
.nav-burger,
.icon-btn {
  border: 1px solid var(--line);
  background: transparent;
  border-radius: 0.45rem;
  width: 2.4rem;
  height: 2.4rem;
  cursor: pointer;
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  color: var(--fg);
}
.burger-icon {
  display: block;
  width: 1rem;
  height: 0.11rem;
  background: currentColor;
  border-radius: 1px;
  box-shadow: 0 -0.35rem 0 currentColor, 0 0.35rem 0 currentColor;
}
.session-rail-btn {
  border: 1px solid var(--line);
  background: var(--bg);
  border-radius: 0.3rem;
  width: 1.25rem;
  height: 1.25rem;
  min-width: 1.25rem;
  padding: 0;
  cursor: pointer;
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  color: var(--fg);
  font-size: 0.72rem;
  line-height: 1;
  z-index: 2;
  position: sticky;
  top: 0;
  touch-action: manipulation;
}
.nav-burger { display: none; }
.nav-ico {
  display: none;
  font-weight: 750;
  color: var(--accent);
}
.shell.nav-collapsed .nav {
  padding-inline: 0.45rem;
  align-items: stretch;
}
.shell.nav-collapsed .nav-brand,
.shell.nav-collapsed .nav-text { display: none; }
.shell.nav-collapsed .nav-ico { display: inline; }
.shell.nav-collapsed .nav-item {
  justify-content: center;
  padding-inline: 0.35rem;
}
.shell.nav-collapsed .nav-chevron { display: none; }
.shell.nav-collapsed .nav-sub {
  margin-left: 0;
  padding-left: 0;
  border-left: 0;
}
.shell.nav-collapsed .nav-top {
  justify-content: center;
  padding-inline: 0;
}
.nav-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  gap: 0.35rem;
  overflow: hidden;
}
.nav-list { display: grid; gap: 0.2rem; }
.nav-list:not(.nav-list-bottom) {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  align-content: start;
}
.nav-spacer { display: none; }
.nav-list-bottom,
.nav-foot {
  flex: 0 0 auto;
}
.nav-group {
  display: grid;
  gap: 0.15rem;
}
.nav-group-toggle {
  justify-content: flex-start;
}
.nav-chevron {
  margin-left: auto;
  width: 0.45rem;
  height: 0.45rem;
  border-right: 1.6px solid currentColor;
  border-bottom: 1.6px solid currentColor;
  transform: rotate(-45deg);
  transition: transform 0.15s ease;
  opacity: 0.75;
  flex: 0 0 auto;
}
.nav-group.is-open > .nav-group-toggle .nav-chevron {
  transform: rotate(45deg);
}
.nav-group.is-open > .nav-group-toggle,
.nav-group.has-active > .nav-group-toggle {
  color: var(--fg);
}
.nav-sub {
  display: grid;
  gap: 0.1rem;
  padding: 0.1rem 0 0.15rem 0.55rem;
  margin-left: 0.35rem;
  border-left: 1px solid var(--line);
}
.nav-sub[hidden] { display: none !important; }
.nav-sub-item {
  padding-top: 0.45rem;
  padding-bottom: 0.45rem;
  font-size: 0.92em;
}
.nav-item {
  text-align: left;
  border: 0;
  background: transparent;
  padding: 0.55rem 0.7rem;
  border-radius: 0.5rem;
  color: var(--muted);
  cursor: pointer;
  position: relative;
  transition: color 0.15s ease, background 0.15s ease;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0.55rem;
}
.nav-item:hover { color: var(--fg); background: color-mix(in srgb, var(--accent) 8%, transparent); }
.nav-item.is-active {
  color: var(--fg);
  background: color-mix(in srgb, var(--accent) 14%, transparent);
}
.nav-item.is-active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20%;
  bottom: 20%;
  width: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.nav-sub-item.is-active::before {
  left: -0.55rem;
}
.nav-foot {
  display: grid;
  gap: 0.65rem;
  padding: 0.85rem 0.55rem 0.25rem;
  border-top: 1px solid var(--line);
  margin-top: 0.5rem;
}
.pill {
  display: inline-flex;
  width: fit-content;
  max-width: 100%;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  font-size: 0.75rem;
  border: 1px solid var(--line);
  color: var(--muted);
}
.pill.warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 45%, transparent); }
.linkish {
  border: 0;
  background: none;
  color: var(--muted);
  cursor: pointer;
  text-align: left;
  padding: 0;
}
.linkish:hover { color: var(--accent); }

.main {
  padding: 0 clamp(0.85rem, 2.5vw, 1.5rem) 2rem;
  min-width: 0;
  max-width: 100%;
  min-height: 0;
  height: 100%;
  overflow-x: hidden;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  animation: rise 0.4s ease-out both;
  background: var(--bg);
}
.view[hidden] { display: none !important; }
.view[data-screen="chat"] {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
}
.view[data-screen="chat"][hidden] { display: none !important; }
.view[data-screen="chat"] .top-menu {
  position: static;
  flex: 0 0 auto;
}
.view[data-screen="chat"] .chat-layout {
  flex: 1 1 auto;
  min-height: 0;
  height: auto;
}
.top-menu {
  position: sticky;
  top: 0;
  z-index: 6;
  margin: 0 0 1rem;
  padding: 1.15rem 0 0.85rem;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}
.page-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.85rem;
  margin-bottom: 0;
  flex-wrap: wrap;
}
.page-head-lead { min-width: 0; flex: 1 1 auto; }
.page-head h2 {
  margin: 0;
  font-size: clamp(1.2rem, 3.5vw, 1.45rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}
.top-menu-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-left: auto;
  align-self: flex-start;
}
.sub { margin: 0.3rem 0 0; color: var(--muted); font-size: 0.92rem; }

label.btn { display: inline-flex; align-items: center; }

.btn {
  border: 1px solid var(--line);
  background: transparent;
  border-radius: var(--radius);
  padding: 0.55rem 0.95rem;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, opacity 0.15s ease;
  white-space: nowrap;
}
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn.primary {
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  border-color: var(--accent-dim);
  color: var(--accent);
}
.btn.primary:hover:not(:disabled) {
  background: color-mix(in srgb, var(--accent) 28%, transparent);
  border-color: var(--accent);
}
.btn.ghost:hover:not(:disabled) {
  border-color: var(--accent-dim);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

.chat-layout {
  display: grid;
  grid-template-columns: var(--session-col, 15rem) minmax(0, 1fr);
  gap: 0.85rem;
  align-items: stretch;
  min-height: 0;
}
.chat-layout.is-resizing-session,
.chat-layout.is-resizing-composer {
  user-select: none;
}
.chat-layout > .session-panel { grid-column: 1; grid-row: 1; min-width: 0; min-height: 0; }
.chat-layout > .chat-pane { grid-column: 2; grid-row: 1; min-width: 0; min-height: 0; }
.chat-layout.sessions-collapsed {
  grid-template-columns: 1.5rem minmax(0, 1fr);
  gap: 0.7rem;
}
.chat-layout.sessions-collapsed > .session-panel {
  grid-template-columns: 1.5rem;
  width: 1.5rem;
  min-width: 1.5rem;
  gap: 0;
}
.chat-layout.sessions-collapsed .session-body {
  display: none;
}
.chat-layout.sessions-collapsed #session-collapse {
  display: none;
}
.chat-layout.sessions-collapsed #session-expand {
  display: inline-grid;
}
.chat-layout.sessions-collapsed > .chat-pane { grid-column: 2; }
.session-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 1.5rem;
  gap: 0.45rem;
  align-items: stretch;
  border-right: 0;
  padding-right: 0;
  min-width: 0;
  min-height: 0;
  height: 100%;
  max-height: none;
}
.session-body {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 0.55rem;
  min-width: 0;
  min-height: 0;
  padding-right: 0.15rem;
}
.session-rail {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 0.4rem;
  min-height: 0;
  height: 100%;
  padding-top: 0.1rem;
  cursor: col-resize;
  touch-action: none;
}
.chat-layout.sessions-collapsed .session-rail {
  cursor: default;
}
.session-rail::after {
  content: "";
  flex: 1 1 auto;
  width: 0;
  min-height: 2rem;
  border-left: var(--resize-line-size) solid var(--resize-line);
  pointer-events: none;
}
.chat-layout:not(.sessions-collapsed) .session-rail:hover::after,
.chat-layout.is-resizing-session .session-rail::after {
  border-left-color: var(--resize-line-hot);
}
.session-panel #session-expand {
  display: none;
}
.session-panel #session-collapse {
  display: inline-grid;
}
.session-toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.4rem;
  align-items: center;
  position: relative;
  z-index: 5;
}
.session-search-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.35rem;
  align-items: center;
  position: relative;
}
.session-toolbar #session-search,
.session-date-field input {
  width: 100%;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg-elev) 80%, transparent);
  border-radius: var(--radius);
  padding: 0.5rem 0.65rem;
  outline: none;
  color: inherit;
  font: inherit;
}
.session-toolbar #session-search:focus,
.session-date-field input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.session-date-btn {
  border: 1px solid var(--line);
  background: transparent;
  border-radius: 0.45rem;
  width: 2.45rem;
  height: 2.45rem;
  padding: 0;
  cursor: pointer;
  display: inline-grid;
  place-items: center;
  color: var(--muted);
  flex: 0 0 auto;
}
.session-date-btn:hover,
.session-date-btn[aria-expanded="true"] {
  color: var(--fg);
  border-color: var(--accent-dim);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}
.session-date-btn.is-active {
  color: var(--accent);
  border-color: var(--accent-dim);
  background: color-mix(in srgb, var(--accent) 14%, transparent);
}
.session-date-pop {
  position: absolute;
  top: calc(100% + 0.4rem);
  left: 0;
  right: 0;
  z-index: 20;
  display: grid;
  gap: 0.55rem;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 0.1rem);
  background: var(--bg-elev);
  box-shadow: 0 12px 32px color-mix(in srgb, #000 28%, transparent);
}
.session-date-pop[hidden] { display: none !important; }
.session-date-pop-title {
  margin: 0;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  font-weight: 650;
}
.session-date-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}
.session-date-preset {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  border-radius: 999px;
  padding: 0.22rem 0.55rem;
  font-size: 0.78rem;
  cursor: pointer;
}
.session-date-preset:hover,
.session-date-preset.is-active {
  color: var(--accent);
  border-color: var(--accent-dim);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}
.session-date-field {
  display: grid;
  grid-template-columns: 1.6rem minmax(0, 1fr);
  gap: 0.45rem;
  align-items: center;
  color: var(--muted);
  font-size: 0.85rem;
}
.session-date-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-top: 0.15rem;
}
.session-date-actions .btn {
  padding: 0.4rem 0.7rem;
  font-size: 0.85rem;
}
.session-date-chip {
  margin: 0;
  font-size: 0.78rem;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: wrap;
}
.session-date-chip[hidden] { display: none !important; }
.session-date-chip button {
  border: 0;
  background: none;
  color: var(--muted);
  cursor: pointer;
  padding: 0;
  font: inherit;
}
.session-date-chip button:hover { color: var(--danger); }
.session-list {
  display: grid;
  align-content: start;
  gap: 0.35rem;
  min-width: 0;
  overflow: auto;
}
.session-btn {
  text-align: left;
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 0.55rem 0.5rem;
  border-radius: 0.45rem;
  cursor: pointer;
  width: 100%;
}
.session-btn.is-active,
.session-btn:hover {
  color: var(--fg);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}
.session-btn small { display: block; color: var(--muted); font-size: 0.75rem; margin-top: 0.15rem; }
.chat-pane {
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  gap: 0.85rem;
  min-width: 0;
  min-height: 0;
  height: 100%;
}
.messages {
  overflow: auto;
  display: grid;
  align-content: start;
  gap: 1rem;
  padding-right: 0.35rem;
  max-width: 100%;
  scrollbar-width: thin;
  scrollbar-color: color-mix(in srgb, var(--accent) 70%, #8b9aab) color-mix(in srgb, var(--bg-soft) 80%, #000);
}
.messages::-webkit-scrollbar {
  width: 10px;
}
.messages::-webkit-scrollbar-track {
  background: color-mix(in srgb, var(--bg-soft) 85%, #000);
  border-radius: 999px;
}
.messages::-webkit-scrollbar-thumb {
  background: color-mix(in srgb, var(--accent) 55%, #7a8a9a);
  border-radius: 999px;
  border: 2px solid color-mix(in srgb, var(--bg-soft) 85%, #000);
}
.messages::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}
.msg {
  max-width: min(46rem, 100%);
  animation: rise 0.35s ease-out both;
}
.msg.user .bubble {
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  border: 1px solid var(--accent-dim);
}
.msg.assistant .bubble {
  background: var(--bg-soft);
  border: 1px solid var(--line);
}
.msg .who {
  font-size: 0.75rem;
  color: var(--muted);
  margin-bottom: 0.3rem;
}
.bubble {
  padding: 0.85rem 1rem;
  border-radius: 0.85rem;
  font-family: var(--serif);
  font-size: 1.02rem;
  line-height: 1.55;
  overflow-wrap: anywhere;
}
.msg.is-typing .typing-bubble {
  display: inline-flex;
  align-items: center;
  min-height: 1.35rem;
  padding-block: 0.95rem;
  width: fit-content;
}
.typing-dots {
  display: inline-flex;
  align-items: center;
  gap: 0.28rem;
}
.typing-dots i {
  width: 0.35rem;
  height: 0.35rem;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.35;
  animation: typing-dot 1.05s ease-in-out infinite;
}
.typing-dots i:nth-child(2) { animation-delay: 0.15s; }
.typing-dots i:nth-child(3) { animation-delay: 0.3s; }
@keyframes typing-dot {
  0%, 80%, 100% { opacity: 0.28; transform: translateY(0); }
  40% { opacity: 1; transform: translateY(-2px); }
}
.citations {
  margin: 0.65rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.35rem;
}
.citations li {
  font-family: var(--font);
  font-size: 0.82rem;
  color: var(--muted);
  border-left: 2px solid var(--accent);
  padding-left: 0.55rem;
}
.citations a {
  color: var(--accent);
  text-decoration: none;
  overflow-wrap: anywhere;
}
.composer {
  display: grid;
  gap: 0.55rem;
  border-top: var(--resize-line-size) solid var(--resize-line);
  padding-top: 0.85rem;
  min-height: 0;
  position: relative;
}
/* зона захвата верхней границы — как у вертикального рельса */
.composer::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: calc(var(--resize-hit) / -2);
  height: var(--resize-hit);
  cursor: ns-resize;
  z-index: 3;
}
.composer.is-resize-hot,
.chat-layout.is-resizing-composer .composer {
  border-top-color: var(--resize-line-hot);
  cursor: ns-resize;
}
.composer textarea {
  height: var(--composer-h, 4.5rem);
  min-height: 2.75rem;
  max-height: min(45vh, 18rem);
  resize: none;
  cursor: text;
}
.composer-actions { display: flex; justify-content: flex-end; gap: 0.5rem; flex-wrap: wrap; }

.search-bar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.55rem;
  margin-bottom: 1.25rem;
}
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--resize-hit) var(--wiki-side, 34%);
  gap: 0;
  align-items: start;
  min-width: 0;
}
.split-main, .split-side {
  min-width: 0;
  padding-right: 0.75rem;
}
.split-side { padding-left: 0.75rem; padding-right: 0; }
.split-resizer {
  width: var(--resize-hit);
  cursor: col-resize;
  position: relative;
  align-self: stretch;
  min-height: 12rem;
  touch-action: none;
}
.split-resizer::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 0;
  border-left: var(--resize-line-size) solid var(--resize-line);
  transform: translateX(-50%);
  pointer-events: none;
}
.split-resizer:hover::before,
.split-resizer:focus-visible::before,
.split.is-resizing .split-resizer::before {
  border-left-color: var(--resize-line-hot);
}
.split.is-resizing { user-select: none; cursor: col-resize; }
.block-title {
  margin: 0 0 0.7rem;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  font-weight: 650;
}
.result-list, .wiki-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}
.result-item, .wiki-item {
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
  animation: rise 0.35s ease-out both;
}
.result-item:hover .title, .wiki-item:hover .title { color: var(--accent); }
.title { font-weight: 650; margin: 0 0 0.25rem; overflow-wrap: anywhere; }
.meta { color: var(--muted); font-size: 0.85rem; overflow-wrap: anywhere; }
.snippet { margin: 0.35rem 0 0; color: color-mix(in srgb, var(--fg) 82%, var(--muted)); overflow-wrap: anywhere; }

.object-card {
  max-width: 44rem;
  display: grid;
  gap: 1rem;
  animation: rise 0.4s ease-out both;
}
.object-card h3 { margin: 0; font-size: 1.35rem; letter-spacing: -0.02em; }
.kv {
  display: grid;
  grid-template-columns: minmax(6rem, 9rem) minmax(0, 1fr);
  gap: 0.45rem 1rem;
  color: var(--muted);
}
.kv strong { color: var(--fg); font-weight: 550; overflow-wrap: anywhere; }
.version-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.45rem;
}
.version-list li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}

.table-wrap {
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.queue {
  width: 100%;
  min-width: 28rem;
  border-collapse: collapse;
}
.queue th, .queue td {
  text-align: left;
  padding: 0.7rem 0.4rem;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}
.queue th { color: var(--muted); font-weight: 550; font-size: 0.85rem; }
.status-chip {
  display: inline-block;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  font-size: 0.78rem;
  border: 1px solid var(--line);
}
.status-chip.ready { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 40%, transparent); }
.status-chip.processing { color: var(--accent); border-color: var(--accent-dim); }
.status-chip.quarantine { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, transparent); }
.status-chip.error { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 40%, transparent); }
.status-chip.accepted { color: var(--muted); }

.tile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 11.5rem), 1fr));
  gap: 0.85rem;
}
.tile {
  display: grid;
  gap: 0.55rem;
  text-align: left;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 0.15rem);
  background: var(--tile);
  cursor: pointer;
  transition: border-color 0.15s ease, transform 0.15s ease, background 0.15s ease;
  animation: rise 0.35s ease-out both;
  min-width: 0;
}
.tile:hover {
  border-color: var(--accent-dim);
  transform: translateY(-1px);
}
.tile:disabled,
.tile.is-off {
  opacity: 0.62;
  cursor: default;
}
.tile-logo {
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 0.7rem;
  display: grid;
  place-items: center;
  font-weight: 750;
  font-size: 0.85rem;
  letter-spacing: -0.02em;
  color: #fff;
}
.tile-logo.b24 { background: linear-gradient(135deg, #2fc6f6, #086ce6); }
.tile-logo.oneс, .tile-logo.onec { background: linear-gradient(135deg, #ffb347, #ff6a00); }
.tile-logo.files { background: linear-gradient(135deg, #57c5b6, #159895); }
.tile-logo.mail { background: linear-gradient(135deg, #9b8cff, #6a5acd); }
.tile-logo.report { background: linear-gradient(135deg, #5ad1a6, #2a9d8f); }
.tile-logo.mcp { background: linear-gradient(135deg, #3dd6c6, #1a8f9e); }
.tile-logo.runtime { background: linear-gradient(135deg, #6aa8ff, #3a5a8c); }
.tile-logo.desktop { background: linear-gradient(135deg, #b8a08a, #7a6555); }
.tile-logo.apitoken { background: linear-gradient(135deg, #7d8cff, #4a56c8); }
.tile-logo.webhook { background: linear-gradient(135deg, #8b9aab, #5d6b7a); }
.tile .title { margin: 0; }
.tile .meta { margin: 0; }
.providers-layout { display: grid; gap: 1rem; padding: 0 1.25rem 1.5rem; }
.provider-models { list-style: none; margin: 0.6rem 0 0; padding: 0; display: grid; gap: 0.35rem; }
.provider-model-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.9rem;
}
.btn.small { padding: 0.25rem 0.55rem; font-size: 0.8rem; }

.report-body {
  display: grid;
  gap: 1rem;
  max-width: 52rem;
}
.report-kpis {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(8.5rem, 1fr));
  gap: 0.75rem;
}
.report-kpi {
  padding: 0.9rem 0;
  border-top: 1px solid var(--line);
}
.report-kpi .label { color: var(--muted); font-size: 0.82rem; }
.report-kpi .value { font-size: 1.35rem; font-weight: 700; letter-spacing: -0.02em; }
.report-table {
  width: 100%;
  border-collapse: collapse;
}
.report-table th, .report-table td {
  text-align: left;
  padding: 0.65rem 0.35rem;
  border-bottom: 1px solid var(--line);
  overflow-wrap: anywhere;
}
.report-table th { color: var(--muted); font-weight: 550; font-size: 0.85rem; }

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  gap: 1rem;
}
.stat {
  padding: 1rem 0;
  border-top: 1px solid var(--line);
  animation: rise 0.35s ease-out both;
  min-width: 0;
}
.stat .label { color: var(--muted); font-size: 0.85rem; margin-bottom: 0.35rem; }
.stat .value { font-size: clamp(1.1rem, 3vw, 1.35rem); font-weight: 700; letter-spacing: -0.02em; overflow-wrap: anywhere; }

.tariff-layout {
  display: grid;
  gap: 1.5rem;
  max-width: 52rem;
}
.tariff-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  gap: 0.85rem;
}
.tariff-card {
  padding: 0.95rem 0;
  border-top: 1px solid var(--line);
}
.tariff-card .label { color: var(--muted); font-size: 0.82rem; margin-bottom: 0.3rem; }
.tariff-card .value {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  overflow-wrap: anywhere;
}
.tariff-card .value.warn { color: var(--warn); }
.tariff-block { display: grid; gap: 0.55rem; }
.support-layout {
  display: grid;
  gap: 1.5rem;
  max-width: 52rem;
}
.support-compose,
.support-history {
  display: grid;
  gap: 0.7rem;
}
.support-field {
  display: grid;
  gap: 0.35rem;
}
.support-field > span { color: var(--muted); font-size: 0.85rem; }
.support-field input,
.support-field textarea,
.support-history-head input {
  width: 100%;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg-elev) 80%, transparent);
  border-radius: var(--radius);
  padding: 0.65rem 0.8rem;
  outline: none;
  color: inherit;
  font: inherit;
}
.support-field textarea { resize: vertical; min-height: 6rem; }
.support-field input:focus,
.support-field textarea:focus,
.support-history-head input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.support-compose-actions {
  display: flex;
  justify-content: flex-end;
}
.support-history-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(10rem, 14rem);
  gap: 0.75rem;
  align-items: end;
}
.support-history-head .block-title { margin: 0; }
@media (max-width: 700px) {
  .support-history-head { grid-template-columns: 1fr; }
}

.settings-list { display: grid; gap: 1.35rem; max-width: 36rem; }
.settings-block {
  display: grid;
  gap: 0.35rem;
  padding-top: 0.25rem;
}
.setting-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(8rem, 11rem);
  gap: 0.75rem;
  align-items: center;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--line);
}
.setting-row.switch-row {
  grid-template-columns: minmax(0, 1fr) auto;
}
.setting-label { color: var(--fg); }
.admin-actions { display: flex; flex-wrap: wrap; gap: 0.55rem; margin: 0.35rem 0 0.75rem; }
.admin-log {
  margin: 0;
  padding: 1rem;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  white-space: pre-wrap;
  min-height: 6rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.85rem;
  overflow-wrap: anywhere;
}

.modal[hidden] { display: none !important; }
.modal {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: grid;
  place-items: center;
  padding: 1rem;
}
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: color-mix(in srgb, #000 45%, transparent);
}
.modal-card {
  position: relative;
  width: min(34rem, 100%);
  max-height: min(90dvh, 40rem);
  overflow: auto;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 0.2rem);
  padding: 1rem 1.1rem 1.15rem;
  box-shadow: 0 18px 50px color-mix(in srgb, #000 35%, transparent);
  animation: rise 0.25s ease-out both;
}
.modal-head {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: flex-start;
  margin-bottom: 1rem;
}
.modal-head h2 { margin: 0; font-size: 1.2rem; }
.modal-form { display: grid; gap: 0.85rem; }
.modal-form label { display: grid; gap: 0.35rem; }
.modal-form label > span { color: var(--muted); font-size: 0.85rem; }
.modal-form textarea,
.modal-form select {
  width: 100%;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 70%, transparent);
  border-radius: var(--radius);
  padding: 0.7rem 0.85rem;
  outline: none;
  resize: vertical;
}
.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  flex-wrap: wrap;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes slide-in {
  from { opacity: 0; transform: translateX(-8px); }
  to { opacity: 1; transform: translateX(0); }
}

@media (max-width: 900px) {
  .shell,
  .shell.nav-collapsed {
    grid-template-columns: 1fr;
    grid-template-rows: auto minmax(0, 1fr);
    height: 100dvh;
    max-height: 100dvh;
    min-height: 100dvh;
    --nav-w: 100%;
  }
  .desktop-only { display: none !important; }
  .nav {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    min-height: 0;
    max-height: none;
    height: auto;
    position: sticky;
    top: 0;
    z-index: 20;
    padding: 0.65rem 0.75rem;
    overflow: visible;
  }
  .shell.nav-collapsed .nav-brand,
  .shell.nav-collapsed .nav-text { display: initial; }
  .shell.nav-collapsed .nav-ico { display: none; }
  .nav-burger { display: inline-grid; place-items: center; margin-left: auto; }
  .nav-body {
    display: none;
    padding-bottom: 0.35rem;
  }
  .nav.is-open .nav-body {
    display: flex;
  }
  .nav-spacer { display: none; }
  .nav-list-bottom { margin-top: 0.35rem; padding-top: 0.35rem; border-top: 1px solid var(--line); }
  .nav-item.is-active::before { display: none; }
  .chat-layout,
  .chat-layout.sessions-collapsed {
    grid-template-columns: 1fr;
    min-height: 0;
    gap: 0.85rem;
  }
  .chat-layout > .session-panel,
  .chat-layout > .chat-pane,
  .chat-layout.sessions-collapsed > .chat-pane {
    grid-column: 1;
    grid-row: auto;
  }
  .session-panel,
  .chat-layout.sessions-collapsed > .session-panel {
    display: grid;
    grid-template-columns: 1fr;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 0 0 0.75rem;
    max-height: none;
    min-width: 0;
    width: auto;
    height: auto;
    box-shadow: none;
    background: transparent;
    gap: 0.55rem;
  }
  .chat-layout.sessions-collapsed .session-body {
    display: grid;
  }
  .session-rail {
    display: none !important;
  }
  .top-menu-actions { width: 100%; }
  .top-menu-actions .btn { width: 100%; }
  .session-list {
    grid-auto-flow: column;
    grid-auto-columns: max-content;
    overflow-x: auto;
    max-width: 100%;
  }
  .split {
    grid-template-columns: 1fr;
  }
  .split-resizer { display: none; }
  .split-main, .split-side { padding: 0; }
  .kv { grid-template-columns: 1fr; }
  .search-bar { grid-template-columns: 1fr; }
  .setting-row { grid-template-columns: 1fr; }
  .composer-actions .btn { flex: 1; }
}

@media (max-width: 480px) {
  .main { padding-inline: 0.75rem; }
  .tile-grid { grid-template-columns: 1fr; }
  .brand-lg { font-size: clamp(1.65rem, 9vw, 2.2rem); }
}