body { font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial; margin: 0; padding: 0; display:flex; height:100vh; }
    .left { width: 320px; border-right:1px solid #ddd; padding:10px; box-sizing:border-box; overflow:auto; }
    .main { flex:1; display:flex; flex-direction:column; }
    .messages { flex:1; padding:10px; overflow:auto; background:#fafafa; }
    .composer { padding:10px; border-top:1px solid #ddd; display:flex; gap:8px; }
    .msg { margin:6px 0; padding:8px; border-radius:8px; max-width:70%; }
    .mine { background:#dcf8c6; margin-left:auto; }
    .other { background:#fff; border:1px solid #eee; }
    .small { font-size:12px; color:#666; }
    button { padding:6px 10px; }
    input, select, textarea { padding:6px; }
    .group-item, .user-item { padding:8px; cursor:pointer; border-bottom:1px solid #eee; }
    .active { background:#eef; }
    .topbar { padding:8px; border-bottom:1px solid #ddd; display:flex; gap:8px; align-items:center; }

    :root {
  --bg: #0f172a;
  --panel: #111827;
  --card: #1f2933;
  --accent: #22c55e;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --border: #374151;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto;
  background: var(--bg);
  color: var(--text);
  height: 100vh;
  display: flex;
}

/* ===== Layout ===== */
.left {
  width: 280px;
  background: var(--panel);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  padding: 12px;
}

.main {
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* ===== Top bar ===== */
.topbar {
  padding: 10px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}

#targetLabel {
  font-size: 13px;
  color: var(--muted);
}

/* ===== Messages ===== */
.messages {
  flex: 1;
  padding: 12px;
  overflow-y: auto;
  background: linear-gradient(180deg, #0b1220, #020617);
}

.msg {
  margin-bottom: 10px;
  padding: 10px 12px;
  border-radius: 14px;
  max-width: 80%;
  word-wrap: break-word;
  animation: fadeIn 0.2s ease;
}

.mine {
  background: var(--accent);
  color: #052e16;
  margin-left: auto;
}

.other {
  background: var(--card);
  border: 1px solid var(--border);
}

.msg .small {
  font-size: 11px;
  opacity: 0.7;
}

/* ===== Composer ===== */
.composer {
  display: flex;
  gap: 8px;
  padding: 10px;
  border-top: 1px solid var(--border);
  background: var(--panel);
}

.composer input[type="text"] {
  flex: 1;
}

input, select, textarea {
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
  outline: none;
}

input::placeholder {
  color: var(--muted);
}

button {
  background: var(--accent);
  color: #052e16;
  border: none;
  padding: 10px 14px;
  border-radius: 10px;
  font-weight: 600;
  cursor: pointer;
  margin: 5px;
}

button:hover {
  opacity: 0.9;
}

/* ===== Lists ===== */
.group-item,
.user-item {
    padding: 10px;
    border-radius: 10px;
    margin-bottom: 6px;
    background: var(--card);
    border: 1px solid var(--border);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.group-item:hover,
.user-item:hover {
  background: #243041;
}

/* ===== Auth ===== */
#auth-area input {
  width: 100%;
  margin-bottom: 8px;
}

/* ===== Mobile ===== */
@media (max-width: 768px) {
  body {
    flex-direction: column;
  }

  .left {
    width: 100%;
    height: 40vh;
  }

  .main {
    height: 60vh;
  }

  .msg {
    max-width: 92%;
  }
  #fileInput{
    width: 20%;
  }
}

/* ===== Anim ===== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}
.badge {
  background: red;
  color: white;
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 999px;
  margin-left: 6px;
}