/* ===== Telegram-style chat with a Poll bubble ===== */
:root {
  --primary: #3390ec;
  --primary-hover: #1976d2;
  --primary-soft: rgba(51, 144, 236, .12);
  --bg: #ffffff;
  --bg-alt: #f4f4f5;
  --bg-chat: #d3e0eb;
  --bg-chat-2: #c2d4e3;
  --bg-topbar: #ffffff;
  --bg-bubble: #ffffff;
  --bg-service: rgba(0, 56, 79, .35);
  --bg-composer: #ffffff;
  --text: #0a0a0a;
  --text-secondary: #707579;
  --text-muted: #8e9499;
  --text-on-service: #ffffff;
  --border: #e4e7ea;
  --border-soft: #ececec;
  --bubble-shadow: 0 1px 2px rgba(16, 35, 47, .08), 0 .5px 1px rgba(16, 35, 47, .05);
  --topbar-shadow: 0 1px 2px rgba(16, 35, 47, .08);
  --pattern-color: rgba(255, 255, 255, .55);
  --transition: cubic-bezier(.4, 0, .2, 1);
  color-scheme: light;
}

[data-theme="dark"] {
  --primary: #8774e1;
  --primary-hover: #a48bff;
  --primary-soft: rgba(135, 116, 225, .18);
  --bg: #212121;
  --bg-alt: #181818;
  --bg-chat: #0e1621;
  --bg-chat-2: #131e2a;
  --bg-topbar: #212d3b;
  --bg-bubble: #182533;
  --bg-service: rgba(0, 0, 0, .35);
  --bg-composer: #212d3b;
  --text: #ffffff;
  --text-secondary: #aaaaaa;
  --text-muted: #708499;
  --text-on-service: #ffffff;
  --border: #2c2c2c;
  --border-soft: #243140;
  --bubble-shadow: 0 1px 2px rgba(0, 0, 0, .35), 0 .5px 1px rgba(0, 0, 0, .2);
  --topbar-shadow: 0 1px 2px rgba(0, 0, 0, .4);
  --pattern-color: rgba(255, 255, 255, .07);
  color-scheme: dark;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0;
  height: 100%;
  color: var(--text);
  font: 15px/1.4 -apple-system, BlinkMacSystemFont, 'SF Pro Text', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-feature-settings: 'kern', 'liga';
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  background: var(--bg-chat);
}
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }

/* ===== App grid ===== */
.app {
  height: 100vh;
  display: grid;
  grid-template-rows: 56px 1fr 56px;
  max-width: 720px;
  margin: 0 auto;
  position: relative;
  background: var(--bg-chat);
}

/* ===== Top bar ===== */
.topbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 12px;
  background: var(--bg-topbar);
  box-shadow: var(--topbar-shadow);
  z-index: 3;
}
.topbar__back {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--text-secondary);
  transition: background-color .15s var(--transition);
}
.topbar__back svg { width: 22px; height: 22px; }
.topbar__back:hover { background: var(--bg-alt); color: var(--text); }

.topbar__avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, #3ca7e0, #1d8ac8);
  flex-shrink: 0;
}
[data-theme="dark"] .topbar__avatar { background: linear-gradient(135deg, #8774e1, #5b4cc5); }

.topbar__meta { flex: 1; min-width: 0; }
.topbar__title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.15;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.topbar__status {
  font-size: 13px;
  line-height: 1.15;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topbar__icons { display: flex; gap: 2px; }
.topbar__icon {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--text-secondary);
  transition: background-color .15s var(--transition), color .15s var(--transition);
}
.topbar__icon svg { width: 22px; height: 22px; }
.topbar__icon:hover { background: var(--bg-alt); color: var(--text); }

/* ===== Theme toggle (floating) ===== */
.theme-toggle {
  position: absolute;
  top: 8px;
  right: 100px;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--text-secondary);
  transition: background-color .2s var(--transition), color .2s var(--transition);
  z-index: 5;
}
.theme-toggle:hover { background: var(--bg-alt); color: var(--text); }

/* ===== Chat ===== */
.chat {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(900px 600px at 20% 10%, var(--bg-chat-2) 0, transparent 60%),
    radial-gradient(700px 500px at 80% 90%, var(--bg-chat-2) 0, transparent 60%),
    var(--bg-chat);
}

/* Свой собственный чат-паттерн (бумажные «галочки»/звёзды), нарисован inline-SVG —
   намеренно не использую Telegram-овский `pattern.svg`, он их защищённый ассет. */
.chat__pattern {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 1;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='140' height='140' viewBox='0 0 140 140'><g fill='white' fill-opacity='0.16'><circle cx='20' cy='20' r='2.5'/><circle cx='70' cy='40' r='1.8'/><circle cx='115' cy='25' r='2.2'/><path d='M40 75 l5 -5 5 5 -5 5z'/><circle cx='90' cy='95' r='2'/><path d='M115 110 l4 -4 4 4 -4 4z'/><circle cx='30' cy='115' r='2.4'/><circle cx='62' cy='105' r='1.6'/></g></svg>");
  background-size: 140px 140px;
  mix-blend-mode: overlay;
}
[data-theme="dark"] .chat__pattern { mix-blend-mode: screen; opacity: .6; }

.chat__scroll {
  position: relative;
  height: 100%;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 12px 14px 16px;
  z-index: 1;
  scrollbar-width: thin;
  scrollbar-color: transparent transparent;
}
.chat__scroll:hover { scrollbar-color: var(--text-muted) transparent; }
.chat__scroll::-webkit-scrollbar { width: 6px; }
.chat__scroll::-webkit-scrollbar-track { background: transparent; }
.chat__scroll::-webkit-scrollbar-thumb { background: transparent; border-radius: 3px; transition: background-color .25s var(--transition); }
.chat__scroll:hover::-webkit-scrollbar-thumb { background: var(--text-muted); }

/* ===== Day divider / service msg ===== */
.day-divider, .service {
  display: flex;
  justify-content: center;
  margin: 8px 0 10px;
}
.day-divider span, .service span {
  background: var(--bg-service);
  color: var(--text-on-service);
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .01em;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* ===== Message ===== */
.msg {
  display: flex;
  flex-direction: column;
  align-items: flex-start;     /* пузырь и реакции — колонкой, прижатой к левому краю */
  margin: 4px 0 10px;
  animation: msgIn .35s cubic-bezier(.2, .9, .25, 1.1) both;
}
.msg--in { align-items: flex-start; }
@keyframes msgIn {
  from { opacity: 0; transform: translateY(8px) scale(.985); }
  to   { opacity: 1; transform: none; }
}

.msg__bubble {
  position: relative;
  max-width: min(560px, 88%);
  background: var(--bg-bubble);
  border-radius: 12px 12px 12px 4px;
  padding: 7px 12px 6px;
  box-shadow: var(--bubble-shadow);
}
.msg--poll .msg__bubble { max-width: min(560px, 94%); padding: 10px 12px 6px; }

/* «Хвостик» как у входящего сообщения Telegram */
.msg__bubble::before {
  content: '';
  position: absolute;
  left: -7px;
  bottom: 0;
  width: 14px;
  height: 14px;
  background: var(--bg-bubble);
  clip-path: path('M14 14 C 7 14, 0 9, 0 0 C 0 6, 5 11, 14 11 Z');
}

.msg__sender {
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
  line-height: 1.2;
  margin-bottom: 2px;
}

.msg__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.35;
  word-wrap: break-word;
  color: var(--text);
}

.msg__meta {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  float: right;
  margin: 4px 0 0 8px;
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1;
}
.msg__views { display: inline-flex; align-items: center; gap: 3px; }
.msg__views svg { opacity: .85; }
.msg__time { white-space: nowrap; }
.msg__tick { color: var(--primary); flex-shrink: 0; }

/* ===== Poll inside the bubble ===== */
.poll__title {
  margin: 2px 0 4px;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.3;
}
.poll__subtitle {
  margin: 0 0 8px;
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}
.poll__lock { opacity: .85; }

.poll__options {
  list-style: none;
  padding: 0;
  margin: 0 -6px 6px;
}

.option {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 8px;
  border-radius: 8px;
  text-align: left;
  font-size: 15px;
  color: var(--text);
  position: relative;
  transition: background-color .15s var(--transition), opacity .25s var(--transition);
}
.option + .option::before {
  content: '';
  position: absolute;
  left: 38px;
  right: 8px;
  top: 0;
  height: 1px;
  background: var(--border-soft);
}
.option:hover:not(:disabled):not(.is-chosen):not(.is-pending) { background: var(--primary-soft); }
.option:hover:not(:disabled):not(.is-chosen):not(.is-pending) + .option::before { background: transparent; }

.option__radio {
  position: relative;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1.5px solid var(--text-muted);
  flex-shrink: 0;
  display: grid;
  place-items: center;
  color: #fff;
  transition: border-color .2s var(--transition), background-color .2s var(--transition);
}
.option__check {
  width: 14px;
  height: 14px;
  stroke-dasharray: 24;
  stroke-dashoffset: 24;
  transition: stroke-dashoffset .3s var(--transition) .05s;
}
.option__spinner {
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid transparent;
  border-top-color: var(--primary);
  opacity: 0;
  animation: spin 1s linear infinite;
}
.option.is-chosen .option__radio { border-color: var(--primary); background: var(--primary); }
.option.is-chosen .option__check  { stroke-dashoffset: 0; }
.option.is-chosen .option__label  { color: var(--primary); font-weight: 500; }
.option.is-pending .option__spinner { opacity: 1; }
.option.is-pending .option__radio { border-color: transparent; background: transparent; }
.option.is-pending .option__check { stroke-dashoffset: 24; }
.bubble.is-voted .option:not(.is-chosen):not(.is-pending),
.msg--poll.is-voted .option:not(.is-chosen):not(.is-pending) {
  opacity: .55;
  cursor: default;
  pointer-events: none;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ===== Poll footer ===== */
.poll__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 4px 0;
  border-top: 1px solid var(--border-soft);
  font-size: 13px;
  color: var(--text-muted);
}
.poll__results {
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .03em;
  text-transform: uppercase;
  opacity: .6;
  cursor: default;
}

/* ===== Reactions ===== */
.reactions {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin: 6px 0 0;
  padding-left: 6px;
}
.reaction {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  border-radius: 12px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 13px;
  font-weight: 500;
  line-height: 1;
  transition: transform .12s var(--transition), background-color .15s var(--transition);
}
.reaction:hover:not(:disabled) { transform: scale(1.06); }
.reaction:active:not(:disabled) { transform: scale(.96); }
.reaction__emoji { font-size: 14px; line-height: 1; }
.reaction__count { font-variant-numeric: tabular-nums; }
.reaction--add {
  background: var(--bg-bubble);
  color: var(--text-muted);
  padding: 3px 7px;
  box-shadow: var(--bubble-shadow);
}
.reaction--add:hover { color: var(--primary); }
.reaction--add svg { width: 14px; height: 14px; }

/* ===== Hint pill ===== */
.hint {
  display: inline-block;
  margin: 18px auto 0;
  padding: 5px 12px;
  border-radius: 12px;
  background: var(--bg-service);
  color: var(--text-on-service);
  font-size: 12px;
  text-align: center;
  align-self: center;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: opacity .25s var(--transition), transform .25s var(--transition);
  position: sticky;
  bottom: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: max-content;
  max-width: 88%;
}

/* ===== Channel action bar (Mute) — для каналов вместо инпута сообщения ===== */
.channel-bar {
  display: flex;
  background: var(--bg-composer);
  box-shadow: 0 -1px 2px rgba(16, 35, 47, .06);
  z-index: 3;
}
[data-theme="dark"] .channel-bar { box-shadow: 0 -1px 2px rgba(0, 0, 0, .35); }

.channel-bar__btn {
  flex: 1;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  transition: background-color .15s var(--transition), color .15s var(--transition);
}
.channel-bar__btn svg { opacity: .8; transition: opacity .15s var(--transition); }
.channel-bar__btn:hover { background: var(--bg-alt); color: var(--primary); }
.channel-bar__btn:hover svg { opacity: 1; }
.channel-bar__btn:active { background: var(--primary-soft); }

/* ===== Page leave anim ===== */
body.is-leaving { animation: leave .35s var(--transition) forwards; }
@keyframes leave { to { opacity: 0; transform: scale(.985); } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

@media (max-width: 480px) {
  .topbar__status { font-size: 12px; }
  .msg__bubble { padding: 7px 10px 6px; }
  .msg--poll .msg__bubble { padding: 9px 10px 6px; }
}