:root {
  --bg: #f3f6fb;
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --line: #dbe5f0;
  --text: #1e293b;
  --muted: #64748b;
  --blue: #2563eb;
  --blue-soft: #dbeafe;
  --green: #16a34a;
  --danger: #dc2626;
  --shadow: 0 18px 48px rgba(15, 23, 42, 0.10);
  --radius: 18px;
}

* { box-sizing: border-box; }
html, body { min-height: 100%; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: linear-gradient(180deg, #eef3f9, var(--bg));
  color: var(--text);
}
button, input, textarea {
  font: inherit;
}
button { cursor: pointer; }
input, textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: white;
  color: var(--text);
  border-radius: 12px;
  padding: 11px 13px;
}
textarea {
  min-height: 92px;
  max-height: 280px;
  resize: vertical;
}

.app {
  width: min(1450px, calc(100% - 24px));
  margin: 12px auto;
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 16px;
}
.sidebar, .main {
  background: rgba(255,255,255,0.8);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(219,229,240,0.8);
  border-radius: 24px;
  box-shadow: var(--shadow);
}
.sidebar {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: calc(100vh - 24px);
  position: sticky;
  top: 12px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 6px 4px;
}
.brand-icon {
  width: 54px;
  height: 54px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  background: linear-gradient(180deg, #3b82f6, #1d4ed8);
  color: white;
  font-size: 1.5rem;
}
.brand h1 {
  margin: 4px 0 0;
  font-size: 1.45rem;
}
.eyebrow {
  color: var(--blue);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: .15em;
  font-weight: 700;
}
.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
}
.compact { padding: 14px; }
.section-title {
  font-weight: 800;
  margin-bottom: 8px;
}
.muted { color: var(--muted); }
.small { font-size: .9rem; }
.hidden { display: none !important; }
.row { display: flex; gap: 10px; align-items: center; }
.wrap { flex-wrap: wrap; }
.gap8 { gap: 8px; }
.stack { display: grid; gap: 10px; }
.tabs { display: flex; gap: 8px; }
.tab {
  border: 1px solid var(--line);
  background: var(--surface-2);
  color: var(--text);
  border-radius: 999px;
  padding: 9px 12px;
}
.tab.active {
  background: var(--blue-soft);
  border-color: #bfd7ff;
  color: #1d4ed8;
}
.auth-pane { display: none; margin-top: 12px; }
.auth-pane.active { display: grid; gap: 10px; }
.primary, .ghost, .danger-btn, .wide-btn, .back-link {
  border-radius: 12px;
  padding: 11px 14px;
  border: 1px solid transparent;
  text-decoration: none;
}
.primary {
  background: linear-gradient(180deg, #3b82f6, #2563eb);
  color: white;
}
.ghost, .wide-btn {
  background: var(--surface-2);
  border-color: var(--line);
  color: var(--text);
}
.danger-btn {
  background: #fee2e2;
  color: var(--danger);
  border-color: #fecaca;
}
.wide, .wide-btn, .back-link { width: 100%; }
.back-link {
  margin-top: auto;
  display: inline-flex;
  justify-content: center;
  color: var(--text);
  background: var(--surface-2);
  border-color: var(--line);
}
.list { display: grid; gap: 10px; }
.card {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px;
}
.card-title {
  font-weight: 800;
  margin-bottom: 4px;
}
.card-sub {
  color: var(--muted);
  font-size: .93rem;
}
.unread-badge {
  min-width: 24px;
  height: 24px;
  border-radius: 999px;
  background: var(--blue);
  color: white;
  font-size: .82rem;
  display: inline-grid;
  place-items: center;
  padding: 0 6px;
}
.me-line { font-weight: 700; }
.main {
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  overflow: hidden;
  min-height: calc(100vh - 24px);
}
.topbar {
  padding: 18px 22px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid var(--line);
}
.topbar h2 { margin: 5px 0 0; font-size: 1.65rem; }
.topbar-right { display: flex; gap: 10px; align-items: center; }
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  border-radius: 999px;
  padding: 10px 14px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  color: var(--muted);
}
.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--green);
}
.meta-row {
  display: flex;
  justify-content: space-between;
  padding: 12px 22px;
  border-bottom: 1px solid var(--line);
}
.messages-shell {
  position: relative;
  min-height: 0;
  padding: 10px 10px 0;
}
.messages {
  height: 100%;
  overflow-y: auto;
  padding: 8px 10px 24px;
}
.empty-state {
  display: none;
  position: absolute;
  inset: 0;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  color: var(--muted);
  pointer-events: none;
}
.empty-state.show { display: flex; }
.empty-emoji { font-size: 2rem; }
.day-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .12em;
  margin: 16px 0 12px;
}
.day-divider::before, .day-divider::after {
  content: '';
  height: 1px;
  flex: 1;
  background: var(--line);
}
.message-row {
  display: flex;
  gap: 12px;
  align-items: flex-end;
  margin-bottom: 12px;
}
.message-row.self { justify-content: flex-end; }
.message-row.self .avatar { display: none; }
.avatar {
  width: 38px;
  height: 38px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  background: linear-gradient(180deg, #60a5fa, #2563eb);
  color: white;
  font-weight: 800;
}
.message-card {
  background: white;
  border: 1px solid var(--line);
  border-radius: 18px 18px 18px 8px;
  max-width: min(820px, 92%);
  padding: 11px 13px;
}
.message-row.self .message-card {
  background: var(--blue-soft);
  border-radius: 18px 18px 8px 18px;
}
.message-meta {
  display: flex;
  gap: 8px;
  align-items: baseline;
  margin-bottom: 6px;
  flex-wrap: wrap;
}
.message-name { font-weight: 800; }
.message-time { font-size: .84rem; color: var(--muted); }
.message-text { white-space: pre-wrap; word-break: break-word; line-height: 1.45; }
.attachment {
  margin-top: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(37,99,235,.06);
  border: 1px solid rgba(37,99,235,.15);
}
.attachment a { color: #1d4ed8; font-weight: 700; text-decoration: none; }
.composer-shell {
  padding: 14px;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 10px;
}
.composer-tools {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}
.composer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: end;
}
.composer-actions {
  min-width: 120px;
  display: grid;
  gap: 8px;
  justify-items: stretch;
}
.public-pill {
  padding: 3px 8px;
  border-radius: 999px;
  font-size: .8rem;
  background: #ecfeff;
  color: #155e75;
  border: 1px solid #bae6fd;
}
.private-pill {
  padding: 3px 8px;
  border-radius: 999px;
  font-size: .8rem;
  background: #eff6ff;
  color: #1d4ed8;
  border: 1px solid #bfdbfe;
}
@media (max-width: 1100px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { position: static; min-height: auto; }
}
@media (max-width: 720px) {
  .app { width: min(100% - 10px, 100%); margin: 5px auto; gap: 10px; }
  .sidebar, .main { border-radius: 18px; }
  .topbar, .meta-row { padding-inline: 14px; }
  .meta-row { flex-direction: column; gap: 6px; }
  .composer { grid-template-columns: 1fr; }
  .composer-tools { flex-direction: column; align-items: stretch; }
  .row { flex-wrap: wrap; }
}


.btnlike{display:inline-flex;align-items:center;justify-content:center;text-decoration:none}
.emoji-bar{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.emoji-btn{border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.04);border-radius:12px;padding:8px 10px;cursor:pointer;font-size:1.1rem}
.emoji-btn:hover{background:rgba(255,255,255,.08)}
.message-reactions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.reaction-btn {
  border: 1px solid rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.06);
  color: white;
  border-radius: 999px;
  padding: 4px 10px;
  cursor: pointer;
  font: inherit;
}

.reaction-btn:hover {
  background: rgba(255,255,255,0.12);
}