:root {
  color-scheme: light dark;
  --telegram-bg: var(--tg-theme-bg-color, #f4f7fb);
  --telegram-text: var(--tg-theme-text-color, #1d2733);
  --telegram-hint: var(--tg-theme-hint-color, #758294);
  --telegram-secondary: var(--tg-theme-secondary-bg-color, #ffffff);
  --telegram-button: var(--tg-theme-button-color, #2a83f7);
  --telegram-button-text: var(--tg-theme-button-text-color, #ffffff);
  --telegram-link: var(--tg-theme-link-color, #2a83f7);
  --telegram-accent: var(--tg-theme-accent-text-color, #1d2733);
  --border: color-mix(in srgb, var(--telegram-hint) 20%, transparent);
  --app-viewport-height: 100vh;
  --app-viewport-height: 100dvh;
  --app-stable-height: 100vh;
  --app-stable-height: 100dvh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--telegram-bg);
  color: var(--telegram-text);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
  background: var(--telegram-bg);
}

body {
  overflow: hidden;
  color: var(--telegram-text);
  font-size: 16px;
}

button,
textarea {
  font: inherit;
}

button {
  -webkit-tap-highlight-color: transparent;
}

.app {
  position: relative;
  display: flex;
  flex-direction: column;
  width: 100%;
  height: var(--app-viewport-height);
  padding: calc(12px + env(safe-area-inset-top)) max(14px, env(safe-area-inset-right)) calc(10px + env(safe-area-inset-bottom)) max(14px, env(safe-area-inset-left));
  background: var(--telegram-bg);
}

.app-header {
  position: relative;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) 38px;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  min-height: 52px;
  margin-bottom: 10px;
}

.menu-button {
  align-items: center;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  padding: 0;
  border: 0;
  border-radius: 12px;
  color: var(--telegram-hint);
  background: color-mix(in srgb, var(--telegram-hint) 10%, transparent);
  cursor: pointer;
}

.menu-button svg {
  width: 21px;
  height: 21px;
  fill: currentColor;
}

.chat-title {
  min-width: 0;
  overflow: hidden;
  color: var(--telegram-text);
  font-size: 17px;
  font-weight: 750;
  letter-spacing: -0.01em;
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.new-chat-button {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  padding: 0;
  border: 0;
  border-radius: 12px;
  color: var(--telegram-button);
  background: color-mix(in srgb, var(--telegram-button) 12%, transparent);
  cursor: pointer;
}

.new-chat-button svg {
  width: 21px;
  height: 21px;
  fill: currentColor;
}

.new-chat-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.chat-list {
  display: grid;
  gap: 3px;
  max-height: min(45vh, 320px);
  padding: 6px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: 15px;
  background: var(--telegram-secondary);
  box-shadow: none;
}

.chat-drawer {
  position: fixed;
  z-index: 12;
  top: 0;
  bottom: 0;
  left: 0;
  display: flex;
  flex-direction: column;
  width: min(84vw, 320px);
  padding: calc(12px + env(safe-area-inset-top)) 10px calc(10px + env(safe-area-inset-bottom));
  border-right: 1px solid var(--border);
  background: var(--telegram-bg);
  box-shadow: 12px 0 32px color-mix(in srgb, var(--telegram-text) 15%, transparent);
  transform: translateX(-102%);
  transition: transform 160ms ease;
}

.chat-drawer--open {
  transform: translateX(0);
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 42px;
  padding: 0 4px 8px;
  font-size: 17px;
}

.drawer-close {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 0;
  border-radius: 10px;
  color: var(--telegram-hint);
  background: transparent;
  font-size: 25px;
  line-height: 1;
  cursor: pointer;
}

.drawer-backdrop {
  position: fixed;
  z-index: 11;
  inset: 0;
  background: rgb(0 0 0 / 30%);
}

.drawer-backdrop[hidden] {
  display: none;
}

.connection-dot {
  position: absolute;
  top: 1px;
  right: 0;
}

.chat-list-item {
  display: flex;
  align-items: center;
  width: 100%;
  min-height: 42px;
  padding: 0 11px;
  border: 0;
  border-radius: 10px;
  color: var(--telegram-text);
  background: transparent;
  font-size: 14px;
  text-align: left;
  cursor: pointer;
}

.chat-list-item--active {
  color: var(--telegram-button);
  background: color-mix(in srgb, var(--telegram-button) 12%, transparent);
  font-weight: 700;
}

.identity {
  display: flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
}

.identity-mark,
.empty-mark {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  color: var(--telegram-button-text);
  background: linear-gradient(145deg, var(--telegram-button), color-mix(in srgb, var(--telegram-button) 62%, #7b61ff));
  font-weight: 800;
  box-shadow: 0 8px 22px color-mix(in srgb, var(--telegram-button) 24%, transparent);
}

.identity h1,
.empty-state h2 {
  margin: 0;
}

.identity h1 {
  overflow: hidden;
  color: var(--telegram-text);
  font-size: 17px;
  font-weight: 750;
  letter-spacing: -0.01em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.connection-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--telegram-hint);
  opacity: 0.6;
}

.connection-dot--success {
  background: #35c875;
  opacity: 1;
}

.connection-dot--error {
  background: #f05c5c;
  opacity: 1;
}

.chat {
  position: relative;
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  min-height: 0;
  padding: 5px 2px 12px;
  overflow-y: auto;
  overscroll-behavior-y: contain;
  scrollbar-width: thin;
  scrollbar-color: color-mix(in srgb, var(--telegram-hint) 35%, transparent) transparent;
}

.empty-state {
  align-self: center;
  max-width: 310px;
  margin: auto;
  padding: 18px 18px 24px;
  text-align: center;
}

.empty-state[hidden] {
  display: none;
}

.empty-mark {
  width: 48px;
  height: 48px;
  margin: 0 auto 13px;
  border-radius: 16px;
  font-size: 22px;
}

.empty-state h2 {
  font-size: 22px;
  letter-spacing: -0.03em;
}

.empty-state p {
  margin-top: 7px;
  color: var(--telegram-hint);
  font-size: 14px;
  line-height: 1.45;
}

.message-pair {
  display: flex;
  flex-direction: column;
  gap: 7px;
  width: 100%;
  margin: 0 0 14px;
}

.system-notice {
  align-self: center;
  max-width: 90%;
  margin: 3px 0 15px;
  padding: 7px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--telegram-hint);
  background: color-mix(in srgb, var(--telegram-secondary) 70%, var(--telegram-hint));
  font-size: 12px;
  line-height: 1.35;
  text-align: center;
}

.bubble {
  max-width: min(90%, 560px);
  padding: 10px 12px 11px;
  border: 1px solid var(--border);
  border-radius: 17px;
  box-shadow: 0 4px 15px color-mix(in srgb, var(--telegram-text) 4%, transparent);
}

.bubble--user {
  align-self: flex-end;
  border-color: color-mix(in srgb, var(--telegram-button) 25%, transparent);
  border-bottom-right-radius: 5px;
  background: color-mix(in srgb, var(--telegram-button) 13%, var(--telegram-secondary));
}

.bubble--assistant {
  align-self: flex-start;
  border-bottom-left-radius: 5px;
  background: var(--telegram-secondary);
}

.bubble-meta {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 5px;
  color: var(--telegram-hint);
  font-size: 11px;
  font-weight: 650;
}

.bubble-state {
  display: inline-flex;
  align-items: center;
  min-height: 18px;
  padding: 0 6px;
  border-radius: 99px;
  color: var(--telegram-hint);
  background: color-mix(in srgb, var(--telegram-hint) 12%, transparent);
  font-size: 10px;
  font-weight: 600;
}

.bubble-state--error {
  color: #d64f4f;
  background: color-mix(in srgb, #e85d5d 13%, transparent);
}

.bubble-state--running {
  color: var(--telegram-button);
  background: color-mix(in srgb, var(--telegram-button) 13%, transparent);
}

.bubble-text {
  margin: 0;
  color: var(--telegram-text);
  font-size: 15px;
  line-height: 1.48;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

.bubble-media {
  display: block;
  width: min(100%, 360px);
  margin-top: 7px;
  overflow: hidden;
  border-radius: 12px;
  background: color-mix(in srgb, var(--telegram-hint) 10%, transparent);
}

.bubble-media img {
  display: block;
  width: 100%;
  max-height: 360px;
  object-fit: cover;
}

.bubble-media-placeholder {
  padding: 16px 12px;
  color: var(--telegram-hint);
  font-size: 12px;
  text-align: center;
}

.status {
  flex: 0 0 auto;
  min-height: 20px;
  margin: 0 3px 7px;
  color: var(--telegram-hint);
  font-size: 12px;
  line-height: 1.35;
  text-align: center;
}

.status--success {
  color: #2ba968;
}

.status--warning {
  color: #b47a1f;
}

.status--error {
  color: #d64f4f;
}

.composer {
  position: relative;
  flex: 0 0 auto;
  padding-top: 2px;
}

.image-preview {
  position: relative;
  display: inline-block;
  width: 64px;
  height: 64px;
  margin: 0 0 7px 4px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--telegram-secondary);
}

.image-preview[hidden] {
  display: none;
}

.image-preview img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.image-preview button {
  position: absolute;
  top: 3px;
  right: 3px;
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  color: #fff;
  background: rgb(0 0 0 / 62%);
  font-size: 17px;
  line-height: 1;
  cursor: pointer;
}

.composer-row {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding: 6px 6px 6px 12px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--telegram-secondary);
  box-shadow: 0 7px 24px color-mix(in srgb, var(--telegram-text) 5%, transparent);
}

.attach-button {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 38px;
  height: 42px;
  padding: 0;
  border: 0;
  border-radius: 12px;
  color: var(--telegram-hint);
  background: transparent;
  cursor: pointer;
}

.attach-button svg {
  width: 21px;
  height: 21px;
  fill: currentColor;
}

.attach-button:active {
  color: var(--telegram-button);
}

.attach-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.composer textarea {
  display: block;
  width: 100%;
  min-width: 0;
  min-height: 48px;
  max-height: 144px;
  padding: 13px 0 7px;
  resize: none;
  border: 0;
  outline: 0;
  color: var(--telegram-text);
  background: transparent;
  font-size: 16px;
  line-height: 1.4;
}

.composer textarea::placeholder {
  color: var(--telegram-hint);
  opacity: 0.9;
}

.composer textarea:disabled {
  cursor: not-allowed;
  opacity: 0.65;
}

.send-button {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  margin-bottom: 1px;
  padding: 0;
  border: 0;
  border-radius: 14px;
  color: var(--telegram-button-text);
  background: var(--telegram-button);
  cursor: pointer;
  transition: transform 120ms ease, opacity 120ms ease;
}

.send-button svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.send-button:not(:disabled):active {
  transform: scale(0.94);
}

.send-button:disabled {
  opacity: 0.36;
  cursor: not-allowed;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (min-width: 640px) {
  .app {
    width: min(100%, 680px);
    margin: 0 auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .send-button {
    transition: none;
  }
}