/* Norius AI — Material You: каркас, поток сообщений, морфинг-анимации рассуждений */

*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: var(--font-sans);
  background: var(--c-surface);
  color: var(--c-on-surface);
  -webkit-font-smoothing: antialiased;
}

body.app {
  overflow: hidden;
  transition: background var(--dur-medium-2) var(--ease-standard), color var(--dur-medium-2) var(--ease-standard);
}

button, input, textarea, select { font: inherit; color: inherit; }
[hidden] { display: none !important; }

::selection { background: var(--c-primary-container); color: var(--c-on-primary-container); }

*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-thumb {
  background: color-mix(in srgb, var(--c-on-surface-variant) 26%, transparent);
  border: 3px solid transparent;
  border-radius: var(--shape-full);
  background-clip: content-box;
}
*::-webkit-scrollbar-thumb:hover { background: color-mix(in srgb, var(--c-on-surface-variant) 44%, transparent); background-clip: content-box; }
*::-webkit-scrollbar-track { background: transparent; }

/* ——— морфящиеся кляксы логотипа ——— */
.blob {
  position: absolute;
  inset: 0;
  border-radius: 42% 58% 61% 39% / 46% 41% 59% 54%;
  filter: blur(0.2px);
  animation: blob-morph 5.2s var(--ease-emphasized) infinite;
  will-change: border-radius, transform;
}
.blob--1 { background: linear-gradient(135deg, var(--c-primary), var(--c-tertiary)); opacity: .95; }
.blob--2 { background: linear-gradient(220deg, var(--c-secondary), var(--c-primary-fixed-dim)); opacity: .7; animation-delay: -1.7s; transform: scale(.82); }
.blob--3 { background: linear-gradient(300deg, var(--c-tertiary-container), var(--c-primary-container)); opacity: .55; animation-delay: -3.1s; transform: scale(.64); }

@keyframes blob-morph {
  0%   { border-radius: 42% 58% 61% 39% / 46% 41% 59% 54%; transform: rotate(0deg) scale(1); }
  33%  { border-radius: 62% 38% 34% 66% / 58% 63% 37% 42%; transform: rotate(52deg) scale(1.06); }
  66%  { border-radius: 34% 66% 57% 43% / 37% 52% 48% 63%; transform: rotate(168deg) scale(.94); }
  100% { border-radius: 42% 58% 61% 39% / 46% 41% 59% 54%; transform: rotate(360deg) scale(1); }
}

/* ——— загрузочный экран ——— */
.boot {
  position: fixed;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: var(--sp-4);
  background: var(--c-surface);
  z-index: 90;
  animation: fade-in var(--dur-medium-2) var(--ease-standard);
}
.boot--out { animation: fade-out var(--dur-medium-2) var(--ease-emphasized-accel) forwards; }
.boot__logo { position: relative; width: 84px; height: 84px; }
.boot__text { color: var(--c-on-surface-variant); letter-spacing: .4px; }

@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes fade-out { from { opacity: 1; } to { opacity: 0; visibility: hidden; } }

/* ——— вход ——— */
.auth {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: var(--sp-4);
  background:
    radial-gradient(120% 90% at 12% 4%, color-mix(in srgb, var(--c-primary) 22%, transparent), transparent 60%),
    radial-gradient(100% 80% at 92% 96%, color-mix(in srgb, var(--c-tertiary) 20%, transparent), transparent 62%),
    var(--c-surface);
  z-index: 80;
}
.auth__card {
  width: min(400px, 100%);
  display: grid;
  gap: var(--sp-3);
  padding: var(--sp-7) var(--sp-6) var(--sp-6);
  border-radius: var(--shape-xl);
  background: var(--c-surface-lowest);
  box-shadow: var(--elev-3);
  animation: card-in var(--dur-long-2) var(--ease-emphasized-decel);
}
@keyframes card-in {
  from { opacity: 0; transform: translateY(28px) scale(.96); border-radius: var(--shape-2xl); }
  to   { opacity: 1; transform: none; border-radius: var(--shape-xl); }
}
.auth__mark {
  width: 60px; height: 60px;
  display: grid; place-items: center;
  border-radius: var(--shape-lg);
  background: var(--c-primary-container);
  color: var(--c-on-primary-container);
  animation: mark-morph 6s var(--ease-emphasized) infinite;
}
.auth__mark .msr { font-size: 32px; --icon-opsz: 32; --icon-fill: 1; }
@keyframes mark-morph {
  0%, 100% { border-radius: var(--shape-lg); transform: rotate(0deg); }
  50%      { border-radius: 50% 40% 46% 54% / 44% 52% 48% 56%; transform: rotate(8deg); }
}
.auth__card h1 { margin: 0; }
.auth__hint, .auth__foot { margin: 0; color: var(--c-on-surface-variant); }
.auth__foot { margin-top: var(--sp-1); text-align: center; }
.auth__error {
  margin: 0;
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--shape-sm);
  background: var(--c-error-container);
  color: var(--c-on-error-container);
  font-size: 13px;
  animation: shake var(--dur-medium-2) var(--ease-standard);
}
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}
.auth__submit { margin-top: var(--sp-2); height: 52px; }

/* ——— поля ввода ——— */
.field { position: relative; display: block; }
.field input {
  width: 100%;
  height: 56px;
  padding: var(--sp-5) var(--sp-4) var(--sp-2);
  border: 1px solid var(--c-outline);
  border-radius: var(--shape-sm);
  background: transparent;
  outline: none;
  transition: border-color var(--dur-short-4) var(--ease-standard), box-shadow var(--dur-short-4) var(--ease-standard);
}
.field input:focus { border-color: var(--c-primary); box-shadow: inset 0 0 0 1px var(--c-primary); }
.field__label {
  position: absolute;
  left: var(--sp-4);
  top: 50%;
  transform: translateY(-50%);
  padding: 0 var(--sp-1);
  color: var(--c-on-surface-variant);
  background: var(--c-surface-lowest);
  pointer-events: none;
  transition: transform var(--dur-short-4) var(--ease-emphasized), font-size var(--dur-short-4) var(--ease-emphasized), color var(--dur-short-4) var(--ease-standard);
}
.field input:focus + .field__label,
.field input:not(:placeholder-shown) + .field__label {
  transform: translateY(-190%) scale(.86);
  font-size: 13px;
}
.field input:focus + .field__label { color: var(--c-primary); }

/* ——— кнопки ——— */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  min-height: 40px;
  padding: 0 var(--sp-5);
  border: none;
  border-radius: var(--shape-full);
  background: transparent;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .1px;
  overflow: hidden;
  transition: background var(--dur-short-4) var(--ease-standard), box-shadow var(--dur-short-4) var(--ease-standard), transform var(--dur-short-3) var(--ease-spring), border-radius var(--dur-medium-2) var(--ease-emphasized);
}
.btn:active { transform: scale(.97); border-radius: var(--shape-md); }
.btn--filled { background: var(--c-primary); color: var(--c-on-primary); }
.btn--filled:hover { box-shadow: var(--elev-1); background: color-mix(in srgb, var(--c-primary) 92%, var(--c-on-primary)); }
.btn--tonal { background: var(--c-secondary-container); color: var(--c-on-secondary-container); }
.btn--text { color: var(--c-primary); padding: 0 var(--sp-3); }
.btn--text:hover { background: color-mix(in srgb, var(--c-primary) 10%, transparent); }
.btn--danger { color: var(--c-error); }
.btn--danger:hover { background: color-mix(in srgb, var(--c-error) 10%, transparent); }
.btn:disabled { opacity: .5; cursor: default; }
.btn__spinner {
  display: none;
  width: 18px; height: 18px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: var(--shape-full);
  animation: spin 700ms linear infinite;
}
.btn--busy .btn__label { opacity: .35; }
.btn--busy .btn__spinner { display: block; position: absolute; }
@keyframes spin { to { transform: rotate(360deg); } }

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 40px; height: 40px;
  border: none;
  border-radius: var(--shape-full);
  background: transparent;
  color: var(--c-on-surface-variant);
  cursor: pointer;
  transition: background var(--dur-short-4) var(--ease-standard), color var(--dur-short-4) var(--ease-standard), border-radius var(--dur-medium-2) var(--ease-emphasized), transform var(--dur-short-3) var(--ease-spring);
}
.icon-btn:hover { background: color-mix(in srgb, var(--c-on-surface) 8%, transparent); color: var(--c-on-surface); }
.icon-btn:active { transform: scale(.92); border-radius: var(--shape-md); }
.icon-btn--small { width: 32px; height: 32px; }
.icon-btn--small .msr { font-size: 18px; --icon-opsz: 20; }
.icon-btn--active { background: var(--c-primary-container); color: var(--c-on-primary-container); }

.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  height: 36px;
  max-width: 240px;
  padding: 0 var(--sp-3);
  border: 1px solid var(--c-outline-variant);
  border-radius: var(--shape-sm);
  background: var(--c-surface-lowest);
  color: var(--c-on-surface);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--dur-short-4) var(--ease-standard), border-color var(--dur-short-4) var(--ease-standard), border-radius var(--dur-medium-2) var(--ease-emphasized), transform var(--dur-short-3) var(--ease-spring);
}
.chip .msr { font-size: 18px; --icon-opsz: 20; color: var(--c-primary); }
.chip__text { overflow: hidden; text-overflow: ellipsis; }
.chip__caret { color: var(--c-on-surface-variant) !important; transition: transform var(--dur-medium-2) var(--ease-emphasized); }
.chip:hover { background: var(--c-surface-container); border-radius: var(--shape-md); }
.chip:active { transform: scale(.96); }
.chip--open .chip__caret { transform: rotate(180deg); }
.chip--suggest {
  height: auto;
  max-width: 100%;
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--shape-lg);
  background: var(--c-surface-container);
  border-color: transparent;
  text-align: left;
  white-space: normal;
}
.chip--suggest:hover { background: var(--c-surface-high); transform: translateY(-2px); box-shadow: var(--elev-1); }

.fab {
  display: inline-grid;
  place-items: center;
  width: 48px; height: 48px;
  flex: 0 0 auto;
  border: none;
  border-radius: var(--shape-lg);
  background: var(--c-primary);
  color: var(--c-on-primary);
  cursor: pointer;
  box-shadow: var(--elev-1);
  transition: background var(--dur-medium-2) var(--ease-standard), border-radius var(--dur-medium-2) var(--ease-emphasized), transform var(--dur-short-3) var(--ease-spring), box-shadow var(--dur-short-4) var(--ease-standard);
}
.fab:hover { box-shadow: var(--elev-2); border-radius: var(--shape-xl); }
.fab:active { transform: scale(.92); }
.fab:disabled { background: var(--c-surface-highest); color: var(--c-on-surface-variant); box-shadow: none; cursor: default; }
.fab--stop { background: var(--c-error); color: var(--c-on-error); border-radius: var(--shape-full); animation: stop-pulse 1.6s var(--ease-standard) infinite; }
@keyframes stop-pulse {
  0%, 100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--c-error) 45%, transparent); }
  50%      { box-shadow: 0 0 0 10px color-mix(in srgb, var(--c-error) 0%, transparent); }
}

/* ——— каркас ——— */
.shell {
  display: grid;
  grid-template-columns: var(--nav-w) minmax(0, 1fr);
  grid-template-rows: var(--topbar-h) minmax(0, 1fr) auto;
  grid-template-areas:
    "topbar topbar"
    "nav thread"
    "nav composer";
  height: 100vh;
  height: 100dvh;
  animation: fade-in var(--dur-medium-4) var(--ease-standard);
}

.topbar {
  grid-area: topbar;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0 var(--sp-3);
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-outline-variant);
  z-index: 20;
}
.topbar__menu { display: none; }
.topbar__brand { display: flex; align-items: center; gap: var(--sp-2); min-width: 0; }
.topbar__mark { color: var(--c-primary); --icon-fill: 1; animation: mark-spin 12s linear infinite; }
@keyframes mark-spin { to { transform: rotate(360deg); } }
.topbar__title {
  max-width: 34vw;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.topbar__spacer { flex: 1 1 auto; }

/* ——— навигация ——— */
.nav {
  grid-area: nav;
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  padding: var(--sp-3);
  background: var(--c-surface-low);
  border-right: 1px solid var(--c-outline-variant);
  min-height: 0;
  z-index: 15;
}
.nav__new { height: 48px; border-radius: var(--shape-lg); }
.nav__search {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  height: 44px;
  padding: 0 var(--sp-3);
  border-radius: var(--shape-full);
  background: var(--c-surface-container);
  color: var(--c-on-surface-variant);
  transition: background var(--dur-short-4) var(--ease-standard);
}
.nav__search:focus-within { background: var(--c-surface-high); }
.nav__search input, .sheet__search input {
  flex: 1 1 auto;
  min-width: 0;
  border: none;
  background: transparent;
  outline: none;
  font-size: 14px;
}
.nav__list { flex: 1 1 auto; overflow-y: auto; display: flex; flex-direction: column; gap: 2px; }
.nav__foot { display: grid; gap: var(--sp-2); padding-top: var(--sp-2); border-top: 1px solid var(--c-outline-variant); }
.nav__note { margin: 0; color: var(--c-on-surface-variant); }
.quota { display: grid; gap: 6px; }
.quota__bar { height: 6px; border-radius: var(--shape-full); background: var(--c-surface-highest); overflow: hidden; }
.quota__bar span {
  display: block;
  height: 100%;
  width: 0;
  border-radius: var(--shape-full);
  background: linear-gradient(90deg, var(--c-primary), var(--c-tertiary));
  transition: width var(--dur-long-2) var(--ease-emphasized-decel);
}

.chat-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
  border: none;
  border-radius: var(--shape-md);
  background: transparent;
  text-align: left;
  cursor: pointer;
  animation: row-in var(--dur-medium-2) var(--ease-emphasized-decel);
  transition: background var(--dur-short-4) var(--ease-standard), border-radius var(--dur-medium-2) var(--ease-emphasized), padding var(--dur-medium-2) var(--ease-emphasized);
}
@keyframes row-in { from { opacity: 0; transform: translateX(-8px); } to { opacity: 1; transform: none; } }
.chat-row:hover { background: var(--c-surface-container); }
.chat-row--active { background: var(--c-secondary-container); color: var(--c-on-secondary-container); border-radius: var(--shape-full); padding-left: var(--sp-4); }
.chat-row__title { font-size: 14px; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chat-row__meta { font-size: 11px; color: var(--c-on-surface-variant); display: flex; gap: 6px; align-items: center; }
.chat-row--active .chat-row__meta { color: inherit; opacity: .8; }
.chat-row__del { opacity: 0; transition: opacity var(--dur-short-4) var(--ease-standard); }
.chat-row:hover .chat-row__del, .chat-row--active .chat-row__del { opacity: 1; }
.chat-row--leaving { animation: row-out var(--dur-medium-2) var(--ease-emphasized-accel) forwards; }
@keyframes row-out { to { opacity: 0; transform: translateX(-24px); max-height: 0; padding-top: 0; padding-bottom: 0; } }

.scrim {
  position: fixed;
  inset: 0;
  background: rgb(var(--c-scrim) / .4);
  backdrop-filter: blur(2px);
  z-index: 14;
  animation: fade-in var(--dur-short-4) var(--ease-standard);
}

/* ——— поток сообщений ——— */
.thread { grid-area: thread; overflow-y: auto; scroll-behavior: smooth; padding: var(--sp-5) var(--sp-4) var(--sp-6); }
.thread__inner { max-width: 880px; margin: 0 auto; display: flex; flex-direction: column; gap: var(--sp-5); }

.empty { display: grid; justify-items: center; gap: var(--sp-3); padding: var(--sp-8) 0; text-align: center; animation: card-in var(--dur-long-1) var(--ease-emphasized-decel); }
.empty__logo { position: relative; width: 96px; height: 96px; }
.empty h2 { margin: var(--sp-2) 0 0; }
.empty__hint { margin: 0; max-width: 560px; color: var(--c-on-surface-variant); }
.empty__chips { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: var(--sp-2); width: 100%; margin-top: var(--sp-3); }

.msg { display: grid; gap: var(--sp-2); animation: msg-in var(--dur-medium-4) var(--ease-emphasized-decel); }
@keyframes msg-in { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
.msg__head { display: flex; align-items: center; gap: var(--sp-2); }
.msg__avatar {
  display: grid; place-items: center;
  width: 30px; height: 30px;
  border-radius: var(--shape-full);
  background: var(--c-primary-container);
  color: var(--c-on-primary-container);
}
.msg__avatar .msr { font-size: 18px; --icon-opsz: 20; --icon-fill: 1; }
.msg__meta { font-size: 12px; color: var(--c-on-surface-variant); display: flex; gap: var(--sp-2); align-items: center; flex-wrap: wrap; }
.msg__parts { display: grid; gap: var(--sp-3); }
.msg--user { justify-items: end; }
.msg--user .msg__parts { justify-items: end; max-width: 100%; }
.bubble {
  max-width: min(680px, 100%);
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--shape-xl) var(--shape-xs) var(--shape-xl) var(--shape-xl);
  background: var(--c-primary-container);
  color: var(--c-on-primary-container);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  box-shadow: var(--elev-1);
  animation: bubble-in var(--dur-medium-3) var(--ease-spring);
}
@keyframes bubble-in { from { opacity: 0; transform: scale(.94) translateY(8px); border-radius: var(--shape-2xl); } to { opacity: 1; transform: none; } }

/* ——— рассуждения ——— */
.think {
  border: 1px solid var(--c-outline-variant);
  border-radius: var(--shape-lg);
  background: color-mix(in srgb, var(--c-surface-container) 72%, transparent);
  overflow: hidden;
  transition: border-radius var(--dur-medium-2) var(--ease-emphasized), background var(--dur-medium-2) var(--ease-standard), box-shadow var(--dur-short-4) var(--ease-standard);
}
.think:hover { background: var(--c-surface-container); }
.think--live { border-color: color-mix(in srgb, var(--c-primary) 45%, transparent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--c-primary) 12%, transparent); }
.think--open { border-radius: var(--shape-xl); }
.think__head {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 5px 10px;
  border: none;
  background: transparent;
  cursor: pointer;
  text-align: left;
}
.think__label { font-size: 12px; font-weight: 600; letter-spacing: .2px; color: var(--c-on-surface); }
.think__sub { font-size: 11px; color: var(--c-on-surface-variant); }
.think__text { display: grid; gap: 2px; min-width: 0; flex: 1 1 auto; }
.think__caret { color: var(--c-on-surface-variant); transition: transform var(--dur-medium-2) var(--ease-emphasized); }
.think--open .think__caret { transform: rotate(180deg); }
.think__body { display: grid; grid-template-rows: 0fr; transition: grid-template-rows var(--dur-medium-4) var(--ease-emphasized); }
.think--open .think__body { grid-template-rows: 1fr; }
.think__inner { overflow: hidden; }
.think__pre {
  margin: 0;
  padding: 0 12px 8px 44px;
  font-family: var(--font-sans);
  font-size: 12.5px;
  line-height: 18px;
  max-height: 260px;
  overflow-y: auto;
  color: var(--c-on-surface-variant);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

/* анимированный логотип рассуждения */
.glyph {
  position: relative;
  display: grid;
  place-items: center;
  width: 36px; height: 36px;
  flex: 0 0 auto;
  border-radius: var(--shape-md);
  background: var(--c-primary-container);
  color: var(--c-on-primary-container);
  transition: background var(--dur-medium-2) var(--ease-standard), color var(--dur-medium-2) var(--ease-standard), border-radius var(--dur-medium-4) var(--ease-emphasized);
}
.glyph::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: inherit;
  border: 2px solid color-mix(in srgb, var(--c-primary) 40%, transparent);
  opacity: 0;
}
.glyph--live::after { animation: halo 1.9s var(--ease-standard) infinite; }
.glyph--live { animation: glyph-morph 4.4s var(--ease-emphasized) infinite; }
@keyframes halo {
  0% { opacity: .8; transform: scale(.86); }
  70% { opacity: 0; transform: scale(1.18); }
  100% { opacity: 0; transform: scale(1.18); }
}
@keyframes glyph-morph {
  0%, 100% { border-radius: var(--shape-md); }
  50% { border-radius: 52% 46% 44% 56% / 48% 54% 46% 52%; }
}
.glyph .msr { font-size: 20px; --icon-opsz: 20; --icon-fill: 1; }
.glyph--done { background: var(--c-surface-highest); color: var(--c-on-surface-variant); }

.glyph--live[data-motion="pulse"] .msr { animation: m-pulse 1.5s var(--ease-standard) infinite; }
@keyframes m-pulse { 0%,100% { transform: scale(1); --icon-wght: 400; } 50% { transform: scale(1.18); --icon-wght: 700; } }

.glyph--live[data-motion="branch"] .msr { animation: m-branch 2s var(--ease-emphasized) infinite; }
@keyframes m-branch { 0%,100% { transform: translateY(0) scale(1); } 40% { transform: translateY(-3px) scale(1.1); } 70% { transform: translateY(2px) scale(.95); } }

.glyph--live[data-motion="wrench"] .msr { animation: m-wrench 1.4s var(--ease-spring) infinite; }
@keyframes m-wrench { 0%,100% { transform: rotate(-18deg); } 50% { transform: rotate(24deg); } }

.glyph--live[data-motion="orbit"] .msr { animation: m-orbit 2.6s linear infinite; }
@keyframes m-orbit { to { transform: rotate(360deg); } }

.glyph--live[data-motion="flip"] .msr { animation: m-flip 2.2s var(--ease-emphasized) infinite; }
@keyframes m-flip { 0%,100% { transform: rotateY(0deg); } 50% { transform: rotateY(180deg); } }

.glyph--live[data-motion="tick"] .msr { animation: m-tick 1.1s steps(4, end) infinite; }
@keyframes m-tick { 0% { transform: translateY(0); } 50% { transform: translateY(-3px); } 100% { transform: translateY(0); } }

.glyph--live[data-motion="caret"] .msr { animation: m-caret 1.2s var(--ease-standard) infinite; }
@keyframes m-caret { 0%,100% { opacity: 1; transform: translateX(0); } 50% { opacity: .45; transform: translateX(3px); } }

.glyph--live[data-motion="sweep"] .msr { animation: m-sweep 1.8s var(--ease-emphasized) infinite; }
@keyframes m-sweep { 0% { transform: translateX(-4px); } 50% { transform: translateX(4px) scale(1.08); } 100% { transform: translateX(-4px); } }

.glyph--live[data-motion="jitter"] .msr { animation: m-jitter .55s var(--ease-standard) infinite; }
@keyframes m-jitter { 0%,100% { transform: translate(0,0) rotate(0); } 25% { transform: translate(-1.5px,1px) rotate(-6deg); } 75% { transform: translate(1.5px,-1px) rotate(6deg); } }

.glyph--live[data-motion="check"] .msr { animation: m-check 1.6s var(--ease-spring) infinite; }
@keyframes m-check { 0%,100% { transform: scale(1); } 35% { transform: scale(.86) rotate(-8deg); } 60% { transform: scale(1.14) rotate(4deg); } }

.glyph--live[data-motion="tilt"] .msr { animation: m-tilt 2.4s var(--ease-emphasized) infinite; }
@keyframes m-tilt { 0%,100% { transform: rotate(-12deg); } 50% { transform: rotate(12deg); } }

.glyph--live[data-motion="rewind"] .msr { animation: m-rewind 2s linear infinite; }
@keyframes m-rewind { 0% { transform: rotate(0); } 100% { transform: rotate(-360deg); } }

.glyph--live[data-motion="unknot"] .msr { animation: m-unknot 2.8s var(--ease-emphasized) infinite; }
@keyframes m-unknot { 0%,100% { transform: skewX(0) scale(1); } 33% { transform: skewX(10deg) scale(1.06); } 66% { transform: skewX(-10deg) scale(.96); } }

.glyph--live[data-motion="stroke"] .msr { animation: m-stroke 1.7s var(--ease-standard) infinite; }
@keyframes m-stroke { 0%,100% { transform: translate(0,0); } 30% { transform: translate(3px,-2px); } 60% { transform: translate(-2px,2px); } }

.glyph--live[data-motion="shine"] .msr { animation: m-shine 1.9s var(--ease-standard) infinite; }
@keyframes m-shine { 0%,100% { filter: none; transform: scale(1); } 50% { filter: drop-shadow(0 0 6px color-mix(in srgb, var(--c-primary) 70%, transparent)); transform: scale(1.1); } }

.glyph--live[data-motion="fold"] .msr { animation: m-fold 2.1s var(--ease-emphasized) infinite; }
@keyframes m-fold { 0%,100% { transform: rotateX(0deg) scale(1); } 50% { transform: rotateX(60deg) scale(.92); } }

/* ——— инструменты ——— */
.tool {
  border: 1px solid var(--c-outline-variant);
  border-radius: var(--shape-lg);
  background: var(--c-surface-lowest);
  overflow: hidden;
  transition: border-radius var(--dur-medium-2) var(--ease-emphasized), box-shadow var(--dur-short-4) var(--ease-standard);
}
.tool--open { border-radius: var(--shape-xl); box-shadow: var(--elev-1); }
.tool--fail { border-color: color-mix(in srgb, var(--c-error) 55%, transparent); background: color-mix(in srgb, var(--c-error-container) 40%, var(--c-surface-lowest)); }
.tool__head {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 5px 10px;
  border: none;
  background: transparent;
  cursor: pointer;
  text-align: left;
}
.tool__text { display: grid; gap: 2px; min-width: 0; flex: 1 1 auto; }
.tool__name { font-size: 12px; font-weight: 600; font-family: var(--font-mono); }
.tool__summary { font-size: 11px; color: var(--c-on-surface-variant); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tool__body { display: grid; grid-template-rows: 0fr; transition: grid-template-rows var(--dur-medium-4) var(--ease-emphasized); }
.tool--open .tool__body { grid-template-rows: 1fr; }
.tool__inner { overflow: hidden; }
.tool__pre {
  margin: 0;
  padding: 0 10px 8px 44px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 16px;
  color: var(--c-on-surface-variant);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  max-height: 200px;
  overflow-y: auto;
}
.tool__caret { color: var(--c-on-surface-variant); transition: transform var(--dur-medium-2) var(--ease-emphasized); }
.tool--open .tool__caret { transform: rotate(180deg); }

/* ——— компактные глифы панелей ——— */
.think .glyph, .tool .glyph { width: 26px; height: 26px; border-radius: 9px; }
.think .glyph .msr, .tool .glyph .msr { font-size: 15px; --icon-opsz: 20; }
.think__sub { font-size: 10.5px; }
.tool__text, .think__text { gap: 0; }

.note {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--shape-md);
  background: var(--c-surface-container);
  color: var(--c-on-surface-variant);
  font-size: 13px;
}
.note--error { background: var(--c-error-container); color: var(--c-on-error-container); }
.note .msr { font-size: 18px; --icon-opsz: 20; }

/* ——— разметка ответа ——— */
.md { font-size: 15px; line-height: 24px; overflow-wrap: anywhere; }
.md > *:first-child { margin-top: 0; }
.md > *:last-child { margin-bottom: 0; }
.md h1, .md h2, .md h3, .md h4 { margin: var(--sp-4) 0 var(--sp-2); line-height: 1.3; }
.md h1 { font-size: 24px; font-weight: 600; }
.md h2 { font-size: 20px; font-weight: 600; }
.md h3 { font-size: 17px; font-weight: 600; }
.md h4 { font-size: 15px; font-weight: 600; }
.md p { margin: 0 0 var(--sp-3); }
.md ul, .md ol { margin: 0 0 var(--sp-3); padding-left: var(--sp-6); }
.md li { margin: 2px 0; }
.md a { color: var(--c-primary); text-decoration: none; border-bottom: 1px solid color-mix(in srgb, var(--c-primary) 40%, transparent); }
.md a:hover { border-bottom-color: var(--c-primary); }
.md blockquote {
  margin: 0 0 var(--sp-3);
  padding: var(--sp-2) var(--sp-4);
  border-left: 3px solid var(--c-primary);
  border-radius: 0 var(--shape-sm) var(--shape-sm) 0;
  background: var(--c-surface-container);
  color: var(--c-on-surface-variant);
}
.md code {
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 2px 6px;
  border-radius: var(--shape-xs);
  background: var(--c-surface-high);
}
.md pre {
  position: relative;
  margin: 0 0 var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--shape-md);
  background: var(--c-surface-high);
  overflow-x: auto;
}
.md pre code { padding: 0; background: transparent; font-size: 12.5px; line-height: 19px; }
.md table { width: 100%; border-collapse: collapse; margin: 0 0 var(--sp-3); font-size: 14px; }
.md th, .md td { padding: var(--sp-2) var(--sp-3); border: 1px solid var(--c-outline-variant); text-align: left; }
.md th { background: var(--c-surface-container); font-weight: 600; }
.md hr { border: none; border-top: 1px solid var(--c-outline-variant); margin: var(--sp-4) 0; }
.md img { max-width: 100%; border-radius: var(--shape-md); }
.caret { display: inline-block; width: 8px; height: 16px; margin-left: 2px; vertical-align: text-bottom; border-radius: 2px; background: var(--c-primary); animation: caret-blink 1s steps(2, end) infinite; }
@keyframes caret-blink { 50% { opacity: 0; } }

/* ——— файлы ——— */
.files { display: flex; flex-wrap: wrap; gap: var(--sp-2); }
.file-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  max-width: 320px;
  padding: var(--sp-2) var(--sp-3);
  border: 1px solid var(--c-outline-variant);
  border-radius: var(--shape-md);
  background: var(--c-surface-lowest);
  color: inherit;
  text-decoration: none;
  font-size: 13px;
  transition: background var(--dur-short-4) var(--ease-standard), transform var(--dur-short-3) var(--ease-spring), border-radius var(--dur-medium-2) var(--ease-emphasized);
  animation: bubble-in var(--dur-medium-2) var(--ease-spring);
}
.file-chip:hover { background: var(--c-surface-container); transform: translateY(-1px); border-radius: var(--shape-lg); }
.file-chip .msr { font-size: 20px; --icon-opsz: 20; color: var(--c-primary); }
.file-chip__text { display: grid; min-width: 0; }
.file-chip__name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 500; }
.file-chip__size { font-size: 11px; color: var(--c-on-surface-variant); }
.file-chip--busy { opacity: .6; }
.file-chip--new { border-style: dashed; }

/* ——— поле ввода ——— */
.composer {
  grid-area: composer;
  display: grid;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-4) var(--sp-4);
  background: transparent;
  pointer-events: none;
}
.composer > * { pointer-events: auto; }
.composer__files, .composer__row { max-width: 880px; width: 100%; margin: 0 auto; }
.composer__files { display: flex; flex-wrap: wrap; gap: var(--sp-2); }
.composer__row {
  display: flex;
  align-items: flex-end;
  gap: var(--sp-2);
  padding: var(--sp-2);
  border: 1px solid var(--c-outline-variant);
  border-radius: var(--shape-xl);
  background: var(--c-surface-lowest);
  box-shadow: var(--elev-3);
  transition: border-color var(--dur-short-4) var(--ease-standard), box-shadow var(--dur-short-4) var(--ease-standard), border-radius var(--dur-medium-2) var(--ease-emphasized);
}
.composer__row:focus-within { border-color: var(--c-primary); box-shadow: var(--elev-2); }
.composer__row--drag { border-color: var(--c-primary); border-style: dashed; background: var(--c-primary-container); }
.composer__row textarea {
  flex: 1 1 auto;
  min-height: 40px;
  max-height: 220px;
  padding: var(--sp-2) 0;
  border: none;
  background: transparent;
  outline: none;
  resize: none;
  font-size: 15px;
  line-height: 22px;
}

/* ——— шторки и меню ——— */
.sheet {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: var(--sp-4);
  background: rgb(var(--c-scrim) / .4);
  backdrop-filter: blur(3px);
  z-index: 60;
  animation: fade-in var(--dur-short-4) var(--ease-standard);
}
.sheet__panel {
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto;
  gap: var(--sp-3);
  width: min(560px, 100%);
  max-height: min(72vh, 720px);
  padding: var(--sp-4);
  border-radius: var(--shape-xl);
  background: var(--c-surface-lowest);
  box-shadow: var(--elev-4);
  animation: sheet-in var(--dur-medium-4) var(--ease-emphasized-decel);
}
.sheet__panel--short { grid-template-rows: auto minmax(0, 1fr); }
@keyframes sheet-in {
  from { opacity: 0; transform: translateY(26px) scale(.96); border-radius: var(--shape-2xl); }
  to { opacity: 1; transform: none; border-radius: var(--shape-xl); }
}
.sheet__head { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-3); }
.sheet__head h3 { margin: 0; }
.sheet__search {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  height: 44px;
  padding: 0 var(--sp-3);
  border-radius: var(--shape-full);
  background: var(--c-surface-container);
  color: var(--c-on-surface-variant);
}
.sheet__list { overflow-y: auto; display: flex; flex-direction: column; gap: var(--sp-1); }
.sheet__foot { color: var(--c-on-surface-variant); }
.sheet__foot p { margin: 0; }

.opt {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3);
  border: 1px solid transparent;
  border-radius: var(--shape-md);
  background: transparent;
  text-align: left;
  cursor: pointer;
  transition: background var(--dur-short-4) var(--ease-standard), border-radius var(--dur-medium-2) var(--ease-emphasized), border-color var(--dur-short-4) var(--ease-standard);
}
.opt:hover { background: var(--c-surface-container); border-radius: var(--shape-lg); }
.opt--active { background: var(--c-secondary-container); color: var(--c-on-secondary-container); border-color: color-mix(in srgb, var(--c-primary) 40%, transparent); border-radius: var(--shape-lg); }
.opt__text { display: grid; gap: 2px; min-width: 0; }
.opt__title { font-size: 14px; font-weight: 600; }
.opt__meta { font-size: 12px; color: var(--c-on-surface-variant); display: flex; gap: var(--sp-2); flex-wrap: wrap; }
.opt--active .opt__meta { color: inherit; opacity: .85; }
.opt .msr { color: var(--c-primary); }
.badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 1px 8px;
  border-radius: var(--shape-full);
  background: var(--c-surface-high);
  color: var(--c-on-surface-variant);
  font-size: 11px;
  font-weight: 600;
}
.badge--free { background: var(--c-success-container); color: var(--c-success); }
.badge--tools { background: var(--c-primary-container); color: var(--c-on-primary-container); }
.badge--vision { background: var(--c-tertiary-container); color: var(--c-on-surface); }

.menu {
  position: fixed;
  inset: 0;
  z-index: 65;
  background: transparent;
}
.menu__panel {
  position: absolute;
  top: calc(var(--topbar-h) - 6px);
  right: var(--sp-3);
  display: grid;
  gap: var(--sp-2);
  width: min(300px, calc(100vw - var(--sp-6)));
  padding: var(--sp-4);
  border-radius: var(--shape-lg);
  background: var(--c-surface-lowest);
  box-shadow: var(--elev-3);
  animation: menu-in var(--dur-medium-2) var(--ease-emphasized-decel);
  transform-origin: top right;
}
@keyframes menu-in { from { opacity: 0; transform: scale(.9) translateY(-8px); } to { opacity: 1; transform: none; } }
.menu__name { margin: 0; }
.menu__mail, .menu__stats { margin: 0; color: var(--c-on-surface-variant); }
.menu__stats { display: grid; gap: 2px; padding: var(--sp-2) 0; border-top: 1px solid var(--c-outline-variant); border-bottom: 1px solid var(--c-outline-variant); }
.menu__panel .btn { justify-content: flex-start; }

.snackbar {
  position: fixed;
  left: 50%;
  bottom: var(--sp-6);
  transform: translateX(-50%);
  max-width: min(520px, calc(100vw - var(--sp-8)));
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--shape-sm);
  background: var(--c-inverse-surface);
  color: var(--c-inverse-on-surface);
  box-shadow: var(--elev-3);
  font-size: 14px;
  z-index: 70;
  animation: snack-in var(--dur-medium-2) var(--ease-emphasized-decel);
}
@keyframes snack-in { from { opacity: 0; transform: translate(-50%, 20px); } to { opacity: 1; transform: translate(-50%, 0); } }

/* ——— адаптив ——— */
@media (max-width: 1080px) {
  .topbar__title { max-width: 26vw; }
  .chip { max-width: 170px; }
}

@media (max-width: 860px) {
  .shell {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "topbar"
      "thread"
      "composer";
  }
  .topbar__menu { display: inline-grid; }
  .nav {
    position: fixed;
    top: 0; bottom: 0; left: 0;
    width: min(320px, 86vw);
    transform: translateX(-102%);
    transition: transform var(--dur-long-1) var(--ease-emphasized);
    box-shadow: var(--elev-4);
    border-radius: 0 var(--shape-xl) var(--shape-xl) 0;
  }
  .nav--open { transform: none; }
  .topbar__title { max-width: 40vw; }
  .chip__text { display: none; }
  .chip { max-width: none; padding: 0 var(--sp-2); }
  .thread { padding: var(--sp-4) var(--sp-3) var(--sp-5); }
  .composer { padding: var(--sp-2) var(--sp-3) var(--sp-3); }
  .think__pre, .tool__pre { padding-left: var(--sp-4); }
}

@media (prefers-reduced-motion: reduce) {
  .blob, .glyph--live, .glyph--live .msr, .glyph--live::after, .topbar__mark, .auth__mark, .fab--stop, .caret { animation: none !important; }
}

/* ——— собственные стили вместо браузерных умолчаний ——— */
* { -webkit-tap-highlight-color: transparent; }
html { scrollbar-width: thin; scrollbar-color: var(--c-outline-variant) transparent; }
::-moz-selection { background: color-mix(in srgb, var(--c-primary) 26%, transparent); color: var(--c-on-surface); }
::selection { background: color-mix(in srgb, var(--c-primary) 26%, transparent); color: var(--c-on-surface); }
:focus { outline: none; }
:where(button, a, [tabindex]):focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--c-primary) 36%, transparent);
  border-radius: var(--shape-md);
}
:where(input, textarea):focus-visible { outline: none; }
input, textarea { caret-color: var(--c-primary); }
textarea { resize: none; }
::placeholder { color: var(--c-on-surface-variant); opacity: .75; }
input[type="file"] { display: none; }
input::-webkit-search-cancel-button, input::-webkit-search-decoration { -webkit-appearance: none; appearance: none; }
input::-webkit-outer-spin-button, input::-webkit-inner-spin-button { -webkit-appearance: none; appearance: none; margin: 0; }
input:-webkit-autofill, input:-webkit-autofill:hover, input:-webkit-autofill:focus {
  -webkit-text-fill-color: var(--c-on-surface);
  -webkit-box-shadow: 0 0 0 1000px var(--c-surface-container) inset;
  caret-color: var(--c-primary);
  transition: background-color 100000s ease-out;
}
.offscreen { position: absolute; left: -9999px; top: 0; width: 1px; height: 1px; opacity: 0; }

/* ——— контекстное меню ——— */
.ctx {
  position: fixed;
  z-index: 90;
  min-width: 214px;
  max-width: 320px;
  display: grid;
  gap: 2px;
  padding: var(--sp-2);
  border: 1px solid var(--c-outline-variant);
  border-radius: var(--shape-md);
  background: var(--c-surface-lowest);
  box-shadow: var(--elev-3);
  opacity: 0;
  transform: scale(.94) translateY(-6px);
  transform-origin: top left;
  transition:
    opacity var(--dur-short-4) var(--ease-standard),
    transform var(--dur-medium-2) var(--ease-emphasized-decel),
    border-radius var(--dur-medium-2) var(--ease-emphasized);
}
.ctx--in { opacity: 1; transform: none; border-radius: var(--shape-xl); }
.ctx__item {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  height: 40px;
  padding: 0 var(--sp-3);
  border: none;
  border-radius: var(--shape-md);
  background: transparent;
  color: var(--c-on-surface);
  font: inherit;
  font-size: 13px;
  text-align: left;
  cursor: pointer;
  transition:
    background var(--dur-short-4) var(--ease-standard),
    border-radius var(--dur-medium-2) var(--ease-emphasized),
    padding var(--dur-medium-2) var(--ease-emphasized);
}
.ctx__item:hover { background: var(--c-surface-container); border-radius: var(--shape-full); padding-left: var(--sp-4); }
.ctx__item .msr { font-size: 19px; --icon-opsz: 20; color: var(--c-on-surface-variant); }
.ctx__item--danger { color: var(--c-error); }
.ctx__item--danger .msr { color: var(--c-error); }
.ctx__item--danger:hover { background: var(--c-error-container); color: var(--c-on-error-container); }
.ctx__label { flex: 1 1 auto; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ctx__hint { font-size: 11px; color: var(--c-on-surface-variant); }
.ctx__sep { height: 1px; margin: var(--sp-1) var(--sp-2); background: var(--c-outline-variant); }

/* ——— диалоги ——— */
.dialog {
  position: fixed;
  inset: 0;
  z-index: 95;
  display: grid;
  place-items: center;
  padding: var(--sp-4);
  background: rgb(var(--c-scrim) / .42);
  backdrop-filter: blur(3px);
  opacity: 0;
  transition: opacity var(--dur-short-4) var(--ease-standard);
}
.dialog--in { opacity: 1; }
.dialog__card {
  display: grid;
  gap: var(--sp-3);
  width: min(440px, 100%);
  padding: var(--sp-5);
  border-radius: var(--shape-2xl);
  background: var(--c-surface-lowest);
  box-shadow: var(--elev-4);
  transform: scale(.92) translateY(20px);
  transition: transform var(--dur-medium-4) var(--ease-emphasized-decel);
}
.dialog--in .dialog__card { transform: none; }
.dialog__title { margin: 0; }
.dialog__text { margin: 0; color: var(--c-on-surface-variant); }
.dialog__field { display: grid; }
.dialog__input {
  width: 100%;
  min-height: 48px;
  padding: var(--sp-3);
  border: 1px solid var(--c-outline-variant);
  border-radius: var(--shape-md);
  background: var(--c-surface-container);
  color: var(--c-on-surface);
  font: inherit;
  font-size: 15px;
  transition: border-color var(--dur-short-4) var(--ease-standard), box-shadow var(--dur-short-4) var(--ease-standard);
}
.dialog__input:focus { border-color: var(--c-primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--c-primary) 16%, transparent); }
.dialog__row { display: flex; justify-content: flex-end; gap: var(--sp-2); }
.dialog__btn {
  height: 40px;
  padding: 0 var(--sp-4);
  border: none;
  border-radius: var(--shape-full);
  background: transparent;
  color: var(--c-primary);
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--dur-short-4) var(--ease-standard), transform var(--dur-short-4) var(--ease-standard);
}
.dialog__btn:hover { background: color-mix(in srgb, var(--c-primary) 12%, transparent); }
.dialog__btn:active { transform: scale(.95); }
.dialog__btn--primary { background: var(--c-primary); color: var(--c-on-primary); }
.dialog__btn--danger { background: var(--c-error); color: var(--c-on-error); }

/* ——— цепочки инструментов ——— */
.chain {
  display: grid;
  border: 1px solid var(--c-outline-variant);
  border-radius: var(--shape-lg);
  background: color-mix(in srgb, var(--c-surface-container) 50%, transparent);
  overflow: hidden;
  transition: border-radius var(--dur-medium-2) var(--ease-emphasized), box-shadow var(--dur-medium-2) var(--ease-emphasized);
}
.chain--open { border-radius: var(--shape-xl); box-shadow: var(--elev-1); }
.chain__head {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 6px var(--sp-3);
  border: none;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: background var(--dur-short-4) var(--ease-standard);
}
.chain__head:hover { background: var(--c-surface-container); }
.chain__text { display: grid; min-width: 0; flex: 1 1 auto; }
.chain__label { font-size: 12px; font-weight: 600; letter-spacing: .2px; }
.chain__sub { font-size: 10.5px; color: var(--c-on-surface-variant); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chain__caret { color: var(--c-on-surface-variant); transition: transform var(--dur-medium-2) var(--ease-emphasized); }
.chain--open .chain__caret { transform: rotate(180deg); }
.chain__body { display: grid; grid-template-rows: 0fr; transition: grid-template-rows var(--dur-medium-4) var(--ease-emphasized); }
.chain--open .chain__body { grid-template-rows: 1fr; }
.chain__inner { overflow: hidden; display: grid; gap: var(--sp-2); }
.chain__inner > .tool { margin: 0 var(--sp-2); background: var(--c-surface-lowest); }
.chain__inner > .tool:last-child { margin-bottom: var(--sp-2); }
.chain__head .glyph--sm { width: 24px; height: 24px; border-radius: 8px; }
.chain__head .glyph--sm .msr, .tool__head .glyph--sm .msr { font-size: 14px; --icon-opsz: 20; }
.tool__head .glyph--sm { width: 24px; height: 24px; border-radius: 8px; }
.tool__cap {
  padding: var(--sp-2) var(--sp-3) 0;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .6px;
  text-transform: uppercase;
  color: var(--c-on-surface-variant);
}
.tool__status { display: inline-flex; align-items: center; }
.tool__status .msr { font-size: 16px; --icon-opsz: 20; --icon-fill: 1; color: var(--c-on-surface-variant); }
.tool--fail .tool__status .msr { color: var(--c-error); }
.tool .files { padding: var(--sp-2) var(--sp-3) var(--sp-3); }

/* ——— флаги моделей ——— */
.flags { display: inline-flex; align-items: center; gap: 4px; }
.flag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: var(--shape-full);
  background: var(--c-surface-highest);
  color: var(--c-on-surface-variant);
  transition: transform var(--dur-short-4) var(--ease-spring), background var(--dur-short-4) var(--ease-standard);
}
.flag:hover { transform: scale(1.14); }
.flag .msr { font-size: 13px; --icon-opsz: 20; --icon-fill: 1; color: inherit; }
.opt--active .flag { background: color-mix(in srgb, var(--c-on-secondary-container) 14%, transparent); color: inherit; }

/* ——— действия над сообщениями ——— */
.msg__actions {
  display: flex;
  align-items: center;
  gap: 2px;
  opacity: 0;
  transform: translateY(-3px);
  transition: opacity var(--dur-short-4) var(--ease-standard), transform var(--dur-medium-2) var(--ease-emphasized-decel);
}
.msg:hover .msg__actions, .msg:focus-within .msg__actions { opacity: 1; transform: none; }
.msg__act .msr { font-size: 17px; --icon-opsz: 20; }
.msg--leaving { animation: msg-out var(--dur-medium-2) var(--ease-emphasized-accel) forwards; pointer-events: none; }
@keyframes msg-out { to { opacity: 0; transform: translateY(-10px) scale(.98); } }

/* ——— изменение ширины боковой панели ——— */
.nav { position: relative; }
.nav__resizer {
  position: absolute;
  top: 0;
  right: -4px;
  width: 9px;
  height: 100%;
  z-index: 18;
  cursor: col-resize;
  background: transparent;
  touch-action: none;
}
.nav__resizer::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 3px;
  height: 44px;
  border-radius: var(--shape-full);
  background: var(--c-outline-variant);
  opacity: 0;
  transform: translate(-50%, -50%) scaleY(.35);
  transition:
    opacity var(--dur-short-4) var(--ease-standard),
    transform var(--dur-medium-2) var(--ease-spring),
    background var(--dur-short-4) var(--ease-standard);
}
.nav__resizer:hover::after, .nav__resizer:focus-visible::after { opacity: 1; transform: translate(-50%, -50%) scaleY(1); background: var(--c-primary); }
.nav__resizer:focus-visible { box-shadow: none; }
body.resizing { cursor: col-resize; user-select: none; }
body.resizing .nav__resizer::after { opacity: 1; background: var(--c-primary); transform: translate(-50%, -50%) scaleY(1.25); }
body.resizing * { transition: none !important; }
.nav__hint { padding: var(--sp-3); text-align: center; }
.chat-row__text { display: grid; gap: 2px; min-width: 0; }
.chat-row__mark {
  display: none;
  width: 34px;
  height: 34px;
  border-radius: var(--shape-full);
  background: var(--c-surface-highest);
  color: var(--c-on-surface-variant);
  font-size: 13px;
  font-weight: 700;
  align-items: center;
  justify-content: center;
  transition: background var(--dur-short-4) var(--ease-standard), color var(--dur-short-4) var(--ease-standard);
}
.chat-row--active .chat-row__mark { background: var(--c-primary); color: var(--c-on-primary); }

/* ——— режим только иконок ——— */
.nav--icons { padding: var(--sp-2) 6px; align-items: center; gap: var(--sp-2); }
.nav--icons .nav__search, .nav--icons .nav__foot, .nav--icons .nav__hint { display: none; }
.nav--icons .nav__new { width: 52px; min-width: 52px; padding: 0; justify-content: center; }
.nav--icons .nav__new span:not(.msr) { display: none; }
.nav--icons .nav__list { width: 100%; align-items: center; gap: 4px; }
.nav--icons .chat-row { grid-template-columns: 1fr; justify-items: center; padding: 4px 0; border-radius: var(--shape-full); }
.nav--icons .chat-row--active { padding-left: 0; }
.nav--icons .chat-row__text, .nav--icons .chat-row__del { display: none; }
.nav--icons .chat-row__mark { display: inline-flex; }

@media (max-width: 1080px) {
  .nav__resizer { display: none; }
  .nav--icons { padding: var(--sp-3); align-items: stretch; }
  .nav--icons .nav__search { display: flex; }
  .nav--icons .nav__foot { display: grid; }
  .nav--icons .nav__new { width: auto; min-width: 0; padding: 0 var(--sp-4); }
  .nav--icons .nav__new span:not(.msr) { display: inline; }
  .nav--icons .chat-row { grid-template-columns: 1fr auto; justify-items: stretch; padding: var(--sp-2) var(--sp-3); border-radius: var(--shape-md); }
  .nav--icons .chat-row__text { display: grid; }
  .nav--icons .chat-row__del { display: inline-flex; }
  .nav--icons .chat-row__mark { display: none; }
  .ctx { min-width: 200px; }
}

@media (prefers-reduced-motion: reduce) {
  .ctx, .dialog, .dialog__card, .msg__actions { transition-duration: 1ms; }
  .msg--leaving { animation-duration: 1ms; }
}