:root {
  --bg: #f6f7fb;
  --panel: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #4f46e5;
  --danger: #dc2626;
  --ok: #16a34a;
  --warn: #d97706;
  --radius: 10px;
  --email: #6366f1;
  --whatsapp: #22c55e;
  --linkedin: #0a66c2;
  --instagram: #e1306c;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --panel: #171a21;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --border: #2a2f3a;
  }
}
* { box-sizing: border-box; }
body { margin: 0; font: 14px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); }
a { color: var(--accent); }
h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 16px; margin: 0 0 12px; }
h3 { font-size: 14px; margin: 0 0 8px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }

.layout { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.sidebar { background: var(--panel); border-right: 1px solid var(--border); padding: 16px; display: flex; flex-direction: column; gap: 16px; position: sticky; top: 0; height: 100vh; overflow-y: auto; }
.brand { font-weight: 700; font-size: 16px; display: flex; gap: 8px; align-items: center; }
.brand span { font-size: 20px; }
.client-switch { display: flex; flex-direction: column; gap: 6px; }
.client-btn { display: flex; align-items: center; gap: 8px; padding: 8px 10px; border-radius: 8px; border: 1px solid var(--border); background: transparent; color: var(--text); cursor: pointer; text-align: left; font: inherit; }
.client-btn.active { border-color: var(--c); box-shadow: inset 3px 0 0 var(--c); font-weight: 600; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--c); flex: none; }
nav { display: flex; flex-direction: column; gap: 2px; }
nav a { padding: 8px 10px; border-radius: 8px; color: var(--text); text-decoration: none; display: flex; justify-content: space-between; }
nav a:hover { background: var(--bg); }
nav a.active { background: var(--bg); font-weight: 600; color: var(--accent); }
.badge { background: var(--accent); color: #fff; border-radius: 999px; padding: 0 7px; font-size: 11px; line-height: 18px; }
.sidebar .bottom { margin-top: auto; display: flex; flex-direction: column; gap: 6px; }

main { padding: 24px 32px; max-width: 1200px; width: 100%; }
.page-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; margin-bottom: 20px; flex-wrap: wrap; }

.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; margin-bottom: 16px; }
.grid { display: grid; gap: 16px; }
.grid.cols-4 { grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); }
.grid.cols-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.stat .value { font-size: 26px; font-weight: 700; }
.stat .label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }

button, .btn { font: inherit; padding: 7px 14px; border-radius: 8px; border: 1px solid var(--border); background: var(--panel); color: var(--text); cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
button:hover { border-color: var(--muted); }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.danger { color: var(--danger); }
button.ghost { border-color: transparent; background: transparent; }
button.sm { padding: 3px 9px; font-size: 12px; }
button:disabled { opacity: .5; cursor: not-allowed; }
.actions { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: 12px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .03em; }
tr:last-child td { border-bottom: none; }
.table-wrap { overflow-x: auto; }

label { display: block; font-weight: 600; font-size: 12px; margin-bottom: 4px; }
input, select, textarea { font: inherit; width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; background: var(--panel); color: var(--text); }
input[type=checkbox] { width: auto; }
textarea { min-height: 90px; resize: vertical; font-family: inherit; }
.field { margin-bottom: 12px; }
.field .help { font-size: 12px; color: var(--muted); margin-top: 3px; }
.row { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
.check { display: flex; align-items: center; gap: 8px; font-weight: 500; font-size: 14px; }
.days { display: flex; gap: 4px; flex-wrap: wrap; }
.days label { display: flex; align-items: center; gap: 4px; border: 1px solid var(--border); border-radius: 6px; padding: 4px 8px; font-weight: 500; cursor: pointer; }

.pill { display: inline-flex; align-items: center; gap: 4px; padding: 1px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; background: var(--bg); border: 1px solid var(--border); }
.ch { color: #fff; border: none; }
.ch-email { background: var(--email); }
.ch-whatsapp { background: var(--whatsapp); }
.ch-linkedin { background: var(--linkedin); }
.ch-instagram { background: var(--instagram); }
.st-active, .st-sent, .st-manual_done { color: var(--ok); }
.st-paused, .st-waiting_manual, .st-manual_pending { color: var(--warn); }
.st-failed { color: var(--danger); }
.st-replied { color: var(--accent); }

.steps { display: flex; flex-direction: column; gap: 10px; }
.step { border: 1px solid var(--border); border-left: 4px solid var(--chc, var(--border)); border-radius: 8px; padding: 12px; background: var(--panel); }
.step-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-bottom: 8px; flex-wrap: wrap; }
.step-num { font-weight: 700; }
.timeline { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.timeline .arrow { color: var(--muted); }

.meter { height: 6px; background: var(--bg); border-radius: 3px; overflow: hidden; margin-top: 4px; }
.meter > div { height: 100%; background: var(--accent); }

.empty { text-align: center; padding: 32px; color: var(--muted); }
.bars { display: flex; gap: 4px; align-items: flex-end; height: 120px; }
.bars div { flex: 1; background: var(--accent); border-radius: 3px 3px 0 0; min-height: 2px; position: relative; }
.bars div span { position: absolute; top: -18px; left: 0; right: 0; text-align: center; font-size: 10px; color: var(--muted); }

.modal-bg { position: fixed; inset: 0; background: rgba(0,0,0,.45); display: flex; align-items: flex-start; justify-content: center; padding: 40px 16px; overflow-y: auto; z-index: 50; }
.modal { background: var(--panel); border-radius: 12px; padding: 20px; width: 100%; max-width: 640px; border: 1px solid var(--border); }
.modal.wide { max-width: 920px; }
.modal-foot { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }
.preview { white-space: pre-wrap; background: var(--bg); border-radius: 8px; padding: 10px; font-size: 13px; }

#toast { position: fixed; bottom: 20px; right: 20px; z-index: 100; display: flex; flex-direction: column; gap: 8px; }
.toast { background: var(--text); color: var(--bg); padding: 10px 14px; border-radius: 8px; box-shadow: 0 4px 16px rgba(0,0,0,.2); max-width: 380px; }
.toast.error { background: var(--danger); color: #fff; }

.login { max-width: 360px; margin: 12vh auto; }
.notice { background: var(--bg); border: 1px dashed var(--border); border-radius: 8px; padding: 10px 12px; font-size: 13px; color: var(--muted); margin-bottom: 12px; }
.task { display: grid; grid-template-columns: 1fr auto; gap: 12px; }
code { background: var(--bg); padding: 1px 5px; border-radius: 4px; font-size: 12px; }

@media (max-width: 800px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: static; height: auto; }
  main { padding: 16px; }
}