:root {
  --bg: #0f1117;
  --panel: #171a23;
  --panel-2: #1c202b;
  --border: #2a2f3d;
  --text: #e8eaef;
  --muted: #8b93a7;
  --accent: #5b8cff;
  --wa: #25d366;
  --fb: #1877f2;
  --success: #22c55e;
  --warn: #f5a524;
  --radius: 12px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.mono { font-family: "SF Mono", ui-monospace, Menlo, Consolas, monospace; }

/* ───────── Layout ───────── */

.app {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 240px;
  flex-shrink: 0;
  background: var(--panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 20px 14px;
  position: sticky;
  top: 0;
  height: 100vh;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 8px 22px;
}

.brand-mark {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #7c5bff);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 13px; color: #fff;
  letter-spacing: 0.5px;
}

.brand-title { font-weight: 600; font-size: 14px; }
.brand-sub { font-size: 12px; color: var(--muted); }

.nav { display: flex; flex-direction: column; gap: 2px; flex: 1; }

.nav-item {
  display: flex; align-items: center; gap: 10px;
  background: transparent; border: none; color: var(--muted);
  padding: 10px 12px; border-radius: 8px; font-size: 13.5px;
  cursor: pointer; text-align: left; width: 100%;
  transition: background 0.15s ease, color 0.15s ease;
}
.nav-item:hover { background: var(--panel-2); color: var(--text); }
.nav-item.active { background: rgba(91,140,255,0.12); color: var(--accent); }
.nav-ic { width: 16px; display: inline-block; text-align: center; opacity: 0.8; }

.sidebar-footer {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 12px; font-size: 12px; color: var(--muted);
  border-top: 1px solid var(--border); margin-top: 10px;
}

.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.dot-live { background: var(--success); box-shadow: 0 0 0 3px rgba(34,197,94,0.15); }

.main {
  flex: 1;
  padding: 28px 32px 60px;
  max-width: 1200px;
}

.mobile-header { display: none; }
.overlay { display: none; }

/* ───────── Page head ───────── */

.page { display: none; }
.page.active { display: block; }

.page-head { margin-bottom: 22px; }
.page-head h1 { margin: 0 0 4px; font-size: 22px; font-weight: 650; }
.muted { color: var(--muted); font-size: 13.5px; margin: 0; }

/* ───────── Cards & grids ───────── */

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 18px;
}

.card-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 14px;
}
.card-head h2 { margin: 0; font-size: 15px; font-weight: 600; }
.card-head h3 { margin: 0; font-size: 14px; font-weight: 600; }

.badge {
  font-size: 11px; color: var(--accent); background: rgba(91,140,255,0.12);
  padding: 3px 8px; border-radius: 100px; font-weight: 600; letter-spacing: 0.3px;
}

.grid-2 { display: grid; grid-template-columns: 1.3fr 1fr; gap: 18px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }

.metric-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 18px;
}
.metric { margin-bottom: 0; }
.metric-label { color: var(--muted); font-size: 12.5px; margin-bottom: 8px; }
.metric-value { font-size: 28px; font-weight: 700; }

/* ───────── Chips ───────── */

.chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; font-weight: 600; padding: 3px 9px; border-radius: 100px;
}
.chip-wa { background: rgba(37,211,102,0.14); color: var(--wa); }
.chip-fb { background: rgba(24,119,242,0.14); color: var(--fb); }

/* ───────── Live feed / tool feed ───────── */

.feed, .tool-feed { max-height: 320px; overflow-y: auto; display: flex; flex-direction: column; gap: 8px; }

.feed-item {
  display: flex; gap: 10px; align-items: flex-start;
  padding: 10px 12px; border-radius: 8px; background: var(--panel-2);
  font-size: 13px; animation: fadeIn 0.25s ease;
}
@keyframes fadeIn { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: translateY(0); } }

.feed-item .from { font-weight: 600; margin-right: 6px; }
.feed-item .txt { color: var(--muted); }
.feed-item .time { margin-left: auto; color: var(--muted); font-size: 11px; white-space: nowrap; }

.empty { color: var(--muted); font-size: 13px; padding: 14px 4px; text-align: center; }

/* ───────── Split bars ───────── */

.split-row { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.split-bar { flex: 1; height: 8px; background: var(--panel-2); border-radius: 100px; overflow: hidden; }
.split-fill { height: 100%; border-radius: 100px; transition: width 0.4s ease; }
.fill-wa { background: var(--wa); }
.fill-fb { background: var(--fb); }

/* ───────── Filters ───────── */

.filters { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.filter-btn {
  background: var(--panel); border: 1px solid var(--border); color: var(--muted);
  padding: 7px 14px; border-radius: 100px; font-size: 13px; cursor: pointer;
}
.filter-btn.active { background: rgba(91,140,255,0.14); border-color: var(--accent); color: var(--accent); }

/* ───────── Table ───────── */

.table-card { padding: 0; overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th {
  text-align: left; color: var(--muted); font-weight: 600; font-size: 12px;
  padding: 12px 16px; border-bottom: 1px solid var(--border); white-space: nowrap;
}
.table td { padding: 12px 16px; border-bottom: 1px solid var(--border); vertical-align: top; }
.table tr:last-child td { border-bottom: none; }

/* ───────── Channel / tool cards ───────── */

.channel-card .kv, .card .kv { margin: 0; }
.kv { display: grid; grid-template-columns: 140px 1fr; row-gap: 10px; column-gap: 10px; margin: 0; }
.kv dt { color: var(--muted); font-size: 12.5px; }
.kv dd { margin: 0; font-size: 13px; word-break: break-all; }

.status-pill {
  font-size: 11.5px; font-weight: 600; padding: 4px 10px; border-radius: 100px;
  background: rgba(139,147,167,0.14); color: var(--muted);
}
.status-pill-ok { background: rgba(34,197,94,0.14); color: var(--success); }
.status-pill-warn { background: rgba(245,165,36,0.14); color: var(--warn); }

.tool-card-head { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.tool-ic { font-size: 18px; }
.tool-card p { font-size: 13px; margin: 0 0 12px; }

/* ───────── Forms ───────── */

.form-row { display: flex; gap: 10px; flex-wrap: wrap; }
.form-row input, .form-row select { flex: 1; min-width: 160px; }

.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.form-grid label { display: flex; flex-direction: column; gap: 6px; font-size: 12.5px; color: var(--muted); }
.form-actions { grid-column: 1 / -1; display: flex; gap: 10px; flex-wrap: wrap; margin-top: 4px; }

input[type="text"], input[type="password"], select {
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  padding: 10px 12px; border-radius: 8px; font-size: 13.5px; outline: none;
  transition: border-color 0.15s ease;
}
input:focus, select:focus { border-color: var(--accent); }
input[readonly] { color: var(--muted); }

.btn {
  border: none; border-radius: 8px; padding: 10px 16px; font-size: 13.5px; font-weight: 600;
  cursor: pointer; transition: opacity 0.15s ease;
}
.btn:hover { opacity: 0.88; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-ghost { background: var(--panel-2); color: var(--text); border: 1px solid var(--border); }

.new-key-banner {
  margin-top: 12px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  background: rgba(34,197,94,0.1); border: 1px solid rgba(34,197,94,0.3);
  padding: 10px 12px; border-radius: 8px; font-size: 13px;
}
.new-key-banner code { background: var(--panel-2); padding: 4px 8px; border-radius: 6px; }
.hidden { display: none; }

/* ───────── Toast ───────── */

.toast {
  position: fixed; bottom: 20px; right: 20px; background: var(--panel-2);
  border: 1px solid var(--border); color: var(--text); padding: 12px 16px;
  border-radius: 8px; font-size: 13px; opacity: 0; transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease; pointer-events: none; z-index: 999;
  max-width: 320px;
}
.toast.show { opacity: 1; transform: translateY(0); }

/* ───────── Test & Connect page ───────── */

.dry-run-result {
  margin-top: 14px; padding: 14px; border-radius: 8px;
  background: var(--panel-2); border: 1px solid var(--border);
}
.dry-run-label { font-size: 11.5px; color: var(--muted); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.4px; }
.dry-run-answer { font-size: 13.5px; line-height: 1.5; white-space: pre-wrap; }
.dry-run-answer.error { color: #f87171; }

.toggle-row { display: flex; gap: 24px; flex-wrap: wrap; }
.toggle { display: flex; align-items: center; gap: 10px; font-size: 13.5px; cursor: pointer; }
.toggle input[type="checkbox"] {
  appearance: none; width: 38px; height: 22px; border-radius: 100px;
  background: var(--panel-2); border: 1px solid var(--border); position: relative;
  cursor: pointer; outline: none; transition: background 0.15s ease;
}
.toggle input[type="checkbox"]::before {
  content: ""; position: absolute; top: 2px; left: 2px; width: 16px; height: 16px;
  border-radius: 50%; background: var(--muted); transition: transform 0.15s ease, background 0.15s ease;
}
.toggle input[type="checkbox"]:checked { background: rgba(34,197,94,0.25); border-color: var(--success); }
.toggle input[type="checkbox"]:checked::before { transform: translateX(16px); background: var(--success); }

.steps { margin: 0 0 16px; padding-left: 20px; font-size: 13.5px; color: var(--text); }
.steps li { margin-bottom: 8px; }
.steps li:last-child { margin-bottom: 0; }

.status-row { display: flex; align-items: center; gap: 10px; font-size: 13px; }

/* ───────── Responsive ───────── */

@media (max-width: 860px) {
  .mobile-header {
    display: flex; align-items: center; gap: 12px;
    position: sticky; top: 0; z-index: 50;
    background: var(--panel); border-bottom: 1px solid var(--border);
    padding: 12px 16px;
  }
  .mobile-brand { font-weight: 600; font-size: 14px; flex: 1; }

  .hamburger {
    background: transparent; border: none; width: 28px; height: 22px;
    display: flex; flex-direction: column; justify-content: space-between; cursor: pointer; padding: 0;
  }
  .hamburger span { display: block; height: 2px; background: var(--text); border-radius: 2px; }

  .app { flex-direction: column; }

  .sidebar {
    position: fixed; top: 0; left: 0; height: 100vh; z-index: 60;
    transform: translateX(-100%);
    transition: transform 0.22s ease;
    box-shadow: 0 0 40px rgba(0,0,0,0.4);
  }
  .sidebar.open { transform: translateX(0); }

  .overlay {
    display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 55;
  }
  .overlay.show { display: block; }

  .main { padding: 18px 16px 60px; }

  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .form-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .metric-grid { grid-template-columns: 1fr; }
  .btn, .form-row .btn { width: 100%; }
  .form-actions .btn { width: auto; flex: 1; }
  .card { padding: 14px; }
}