:root {
  --bg: #0f1419;
  --bg2: #161d26;
  --panel: #1b232e;
  --border: #28323f;
  --text: #e6edf3;
  --muted: #8b97a6;
  --primary: #25d366;
  --primary-dark: #1da851;
  --accent: #3b82f6;
  --warn-bg: #3a2a12;
  --warn-border: #6b4a16;
  --danger: #ef4444;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Segoe UI', Tahoma, 'Cairo', sans-serif;
  background: var(--bg);
  color: var(--text);
  height: 100vh;
  overflow: hidden;
}
.app { display: flex; height: 100vh; }

/* الشريط الجانبي */
.sidebar {
  width: 240px;
  background: var(--bg2);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 18px 14px;
}
.brand { display: flex; align-items: center; gap: 12px; margin-bottom: 26px; padding: 0 6px; }
.logo {
  width: 42px; height: 42px; border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: grid; place-items: center; font-weight: 800; color: #04140a;
}
.brand-name { font-size: 18px; font-weight: 700; }
.nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.nav-item {
  text-align: right; background: none; border: none; color: var(--muted);
  padding: 12px 14px; border-radius: 10px; cursor: pointer; font-size: 15px;
  transition: .15s;
}
.nav-item:hover { background: var(--panel); color: var(--text); }
.nav-item.active { background: var(--panel); color: var(--text); font-weight: 600; }
.status-box {
  display: flex; align-items: center; gap: 8px; padding: 10px 12px;
  background: var(--panel); border-radius: 10px; font-size: 13px; color: var(--muted);
}
.dot { width: 9px; height: 9px; border-radius: 50%; }
.dot.on { background: var(--primary); box-shadow: 0 0 8px var(--primary); }
.dot.off { background: var(--danger); }

/* المحتوى */
.content { flex: 1; overflow-y: auto; padding: 28px 32px; }
.tab { display: none; }
.tab.active { display: block; animation: fade .2s; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; } }
.tab-head { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 14px; margin-bottom: 22px; }
h1 { font-size: 24px; }
h3 { margin-bottom: 14px; font-size: 16px; }
.row { display: flex; gap: 8px; flex-wrap: wrap; }

/* عناصر الإدخال */
input, textarea, .select {
  background: var(--bg2); border: 1px solid var(--border); color: var(--text);
  padding: 10px 12px; border-radius: 9px; font-size: 14px; font-family: inherit;
  outline: none; transition: .15s;
}
input:focus, textarea:focus, .select:focus { border-color: var(--primary); }
textarea { width: 100%; resize: vertical; margin-bottom: 12px; }
.select { cursor: pointer; }

/* الأزرار */
.btn {
  background: var(--panel); border: 1px solid var(--border); color: var(--text);
  padding: 10px 16px; border-radius: 9px; cursor: pointer; font-size: 14px;
  font-family: inherit; transition: .15s;
}
.btn:hover { background: var(--border); }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #04140a; font-weight: 600; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.danger { background: var(--danger); border-color: var(--danger); color: #fff; }

/* البطاقات */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 18px;
}
.card h4 { font-size: 16px; margin-bottom: 6px; }
.card .phone { color: var(--muted); font-size: 13px; margin-bottom: 12px; }
.badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.badge.connected { background: rgba(37,211,102,.15); color: var(--primary); }
.badge.disconnected { background: rgba(239,68,68,.15); color: var(--danger); }
.badge.qr { background: rgba(59,130,246,.15); color: var(--accent); }
.qr-img { width: 200px; height: 200px; background: #fff; border-radius: 10px; margin: 12px 0; }
.card-actions { display: flex; gap: 8px; margin-top: 12px; }

/* اللوحات */
.panel { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 20px; }
.panel.narrow { max-width: 520px; }
.panel label { display: block; margin: 14px 0 6px; font-size: 13px; color: var(--muted); }
.panel input, .panel .select, .panel textarea { width: 100%; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.check { display: flex; align-items: center; gap: 8px; margin: 8px 0 14px; color: var(--muted); font-size: 14px; }
.check input { width: auto; }

/* الجداول */
.table { width: 100%; border-collapse: collapse; background: var(--panel); border-radius: 12px; overflow: hidden; }
.table th, .table td { padding: 12px 14px; text-align: right; border-bottom: 1px solid var(--border); font-size: 14px; }
.table th { background: var(--bg2); color: var(--muted); font-weight: 600; }

/* المحادثات */
.chats-layout { display: grid; grid-template-columns: 280px 1fr; gap: 16px; height: calc(100vh - 150px); }
.chats-side { display: flex; flex-direction: column; gap: 10px; }
.chats-side .select { width: 100%; }
.list { overflow-y: auto; display: flex; flex-direction: column; gap: 6px; }
.list-item { padding: 11px 13px; background: var(--panel); border: 1px solid var(--border); border-radius: 10px; cursor: pointer; font-size: 14px; }
.list-item:hover, .list-item.active { border-color: var(--primary); }
.chats-main { display: flex; flex-direction: column; background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 14px; }
.messages { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 8px; padding: 6px; }
.msg { max-width: 70%; padding: 9px 13px; border-radius: 12px; font-size: 14px; line-height: 1.5; }
.msg.in { background: var(--bg2); align-self: flex-start; }
.msg.out { background: var(--primary-dark); color: #fff; align-self: flex-end; }
.chat-input { display: flex; gap: 8px; margin-top: 10px; }
.chat-input input { flex: 1; }

/* مساعدات */
.muted { color: var(--muted); }
.hidden { display: none !important; }
.warn { background: var(--warn-bg); border: 1px solid var(--warn-border); color: #f0c674; padding: 12px 16px; border-radius: 10px; margin-bottom: 18px; font-size: 14px; }
.suggest { background: var(--bg2); border: 1px solid var(--accent); border-radius: 10px; padding: 12px 14px; margin-top: 10px; font-size: 14px; white-space: pre-wrap; }
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--panel); border: 1px solid var(--primary); color: var(--text);
  padding: 12px 22px; border-radius: 10px; z-index: 100; animation: fade .2s;
}
::-webkit-scrollbar { width: 9px; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 6px; }

/* ====== الجوال (تخطيط متجاوب) ====== */
@media (max-width: 820px) {
  .app { flex-direction: column; height: 100vh; }
  .sidebar {
    width: 100%; flex-direction: row; align-items: center; gap: 10px;
    padding: 10px 12px; border-left: none; border-bottom: 1px solid var(--border);
    overflow-x: auto; flex-shrink: 0;
  }
  .brand { margin-bottom: 0; flex-shrink: 0; }
  .brand-name { display: none; }
  .nav { flex-direction: row; flex: 1; gap: 4px; overflow-x: auto; }
  .nav-item { padding: 8px 12px; font-size: 13px; white-space: nowrap; flex-shrink: 0; }
  .status-box { padding: 6px 10px; font-size: 12px; flex-shrink: 0; }
  .status-box span:last-child { display: none; }
  .content { padding: 16px; }
  h1 { font-size: 20px; }
  .tab-head { flex-direction: column; align-items: stretch; }
  .row { flex-direction: column; }
  .row > input, .row > .select, .row > .btn { width: 100%; }
  .cards { grid-template-columns: 1fr; }
  .grid2 { grid-template-columns: 1fr; }
  .chats-layout { grid-template-columns: 1fr; height: auto; }
  .chats-side .list { max-height: 200px; }
  .chats-main { height: 60vh; }
  .table { font-size: 12px; }
  .table th, .table td { padding: 8px; }
}