:root {
  --bg: #0b1020;
  --bg-soft: #111831;
  --panel: #141c33;
  --panel-2: #19233f;
  --line: #2b3659;
  --text: #e7ecff;
  --muted: #98a7cc;
  --primary: #4f8cff;
  --danger: #f87171;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, var(--bg), var(--bg-soft));
}

button, input, select, textarea { font: inherit; }
#app { min-height: 100vh; }

.layout3 {
  display: grid;
  grid-template-columns: 230px 340px 1fr;
  gap: 12px;
  min-height: 100vh;
  padding: 12px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
}

.left-sticky {
  position: sticky;
  top: 12px;
  max-height: calc(100vh - 24px);
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 10px;
  padding: 10px;
}

.left-tabs { display: grid; gap: 8px; }

.tab-btn {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel-2);
  color: var(--text);
  text-align: left;
  padding: 9px 10px;
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease;
}
.tab-btn:hover { border-color: #4562a1; }
.tab-btn.active {
  background: #22335e;
  border-color: var(--primary);
  color: #dfe9ff;
  font-weight: 600;
}

.middle {
  padding: 10px;
  max-height: calc(100vh - 24px);
  overflow: hidden;
}

.middle-head { margin-bottom: 10px; }

.scroll-list {
  overflow: auto;
  display: grid;
  gap: 8px;
}

.list-item, .result, .notif, .setting-item {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel-2);
  padding: 9px;
}

.list-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}
.list-item.active { border-color: var(--primary); }

.item-main {
  border: none;
  background: transparent;
  color: inherit;
  text-align: left;
  padding: 0;
  cursor: pointer;
}

.refresh {
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #202b49;
  color: var(--text);
  cursor: pointer;
}

.name { font-weight: 600; }
.preview { color: var(--muted); font-size: 12px; }
.time { color: var(--muted); font-size: 11px; }

.badge {
  border-radius: 999px;
  background: var(--primary);
  color: #071328;
  padding: 2px 7px;
  font-size: 11px;
  font-weight: 700;
}

.right {
  max-height: calc(100vh - 24px);
  overflow: hidden;
  position: relative;
}

.chat-col {
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 8px;
  height: 100%;
  padding: 10px;
}

.chat-header {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 9px;
  background: var(--panel-2);
}

.message-area {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  overflow: auto;
  background: #10172d;
  display: grid;
  gap: 9px;
}

.bubble {
  max-width: 72%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px;
  background: #172240;
}
.bubble.mine {
  margin-left: auto;
  background: #1e325d;
  border-color: #4a74bb;
}
.bubble img, .bubble video { max-width: 100%; border-radius: 8px; }

.input-bar textarea {
  width: 100%;
  min-height: 64px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 9px;
  background: #111a31;
  color: var(--text);
}

.controls { margin-top: 8px; }

.file-btn {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  background: #212d4a;
  color: var(--text);
  cursor: pointer;
}
.file-btn input { display: none; }

button {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #212d4a;
  color: var(--text);
  padding: 8px 11px;
  cursor: pointer;
}
button.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #071328;
  font-weight: 700;
}
button.danger {
  color: var(--danger);
  border-color: #7f2d2d;
  background: #2a1418;
}

input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  background: #111a31;
  color: var(--text);
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(79, 140, 255, 0.2);
}

.panel-wrap { overflow: auto; display: grid; gap: 10px; }
.dropdown-list { display: grid; gap: 8px; max-height: 420px; overflow: auto; }

.segmented {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}
.segmented button { border: none; border-radius: 0; }
.segmented .on { background: #22335e; color: #dee8ff; }

.avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: #2b3a62;
  color: #dee8ff;
  display: grid;
  place-items: center;
  font-weight: 700;
}
.avatar.big { width: 42px; height: 42px; }
.avatar.xl { width: 58px; height: 58px; }
.row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.space { justify-content: space-between; }
.small { color: var(--muted); font-size: 12px; }
.logo { margin-bottom: 4px; }
.left-footer { border-top: 1px solid var(--line); padding-top: 10px; }

.profile-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px;
  background: var(--panel-2);
}

.group-drawer {
  position: absolute;
  right: -340px;
  top: 10px;
  bottom: 10px;
  width: 320px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px;
  overflow: auto;
  transition: right .2s ease;
}
.group-drawer.open { right: 10px; }
.members { display: grid; gap: 6px; margin-bottom: 10px; }
.member { border: 1px solid var(--line); border-radius: 8px; padding: 7px; background: var(--panel-2); }
.media-grid { display: grid; gap: 8px; }
.media-grid img, .media-grid video { width: 100%; border-radius: 8px; }

.placeholder {
  display: grid;
  place-items: center;
  color: var(--muted);
  min-height: 260px;
  padding: 20px;
  text-align: center;
}

.auth-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 20px;
}
.auth {
  width: min(520px, 100%);
  padding: 16px;
  display: grid;
  gap: 10px;
}

@media (max-width: 1200px) {
  .layout3 { grid-template-columns: 210px 300px 1fr; }
}

@media (max-width: 960px) {
  .layout3 {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 8px;
  }
  .left-sticky, .middle, .right {
    position: static;
    max-height: none;
  }
  .message-area { min-height: 45vh; }
  .bubble { max-width: 92%; }
  .group-drawer { position: static; width: 100%; right: auto; top: auto; bottom: auto; display: none; }
  .group-drawer.open { display: block; }
}