:root {
  color-scheme: light dark;
  --bg: #f6f4ef;
  --panel: #ffffff;
  --panel-2: #fdfbf7;
  --text: #1f2328;
  --muted: #667085;
  --border: #d9d5cc;
  --accent: #0f766e;
  --accent-2: #0b5f59;
  --danger: #b42318;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101312;
    --panel: #181c1b;
    --panel-2: #202523;
    --text: #eef2ef;
    --muted: #aab4af;
    --border: #303936;
    --accent: #2dd4bf;
    --accent-2: #5eead4;
    --danger: #f97066;
  }
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); }
button, input, textarea { font: inherit; }
button {
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  border-radius: 6px;
  padding: 0.58rem 0.8rem;
  cursor: pointer;
}
button:hover { background: var(--accent-2); }
button.ghost { background: transparent; color: var(--text); border-color: var(--border); }
input, textarea {
  width: 100%;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  border-radius: 6px;
  padding: 0.62rem 0.7rem;
}
textarea { min-height: 76px; resize: vertical; }
.shell { max-width: 1240px; margin: 0 auto; padding: 20px; }
.topbar, .pane-head, .detail-head, .actions, .send-row, .tabs {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.topbar { padding: 10px 0 18px; }
h1, h2, h3, p { margin: 0; }
h1 { font-size: 1.6rem; }
h2 { font-size: 1.05rem; }
h3 { font-size: 0.95rem; }
.kicker { color: var(--muted); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0; }
.status, .pill {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.36rem 0.62rem;
  color: var(--muted);
  white-space: nowrap;
}
.hidden { display: none !important; }
.login { min-height: 60vh; display: grid; place-items: center; }
.login-box { width: min(360px, 100%); background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 20px; display: grid; gap: 12px; }
.error { color: var(--danger); min-height: 1.2rem; }
.workspace { display: grid; gap: 16px; }
.tabs { justify-content: flex-start; border-bottom: 1px solid var(--border); padding-bottom: 10px; }
.tab { background: transparent; color: var(--text); border-color: var(--border); }
.tab.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.tabs .ghost { margin-left: auto; }
.split { display: grid; grid-template-columns: minmax(260px, 360px) 1fr; gap: 16px; min-height: 680px; }
.lead-list, .lead-detail, .tab-pane, .settings-form {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
}
.lead-list { overflow: auto; }
.lead-item {
  border: 1px solid var(--border);
  background: var(--panel-2);
  border-radius: 6px;
  padding: 10px;
  margin-top: 10px;
  cursor: pointer;
}
.lead-item:hover { border-color: var(--accent); }
.lead-item strong { display: block; margin-bottom: 4px; }
.lead-item small { color: var(--muted); display: block; overflow-wrap: anywhere; }
.lead-detail { min-width: 0; }
.empty { color: var(--muted); display: grid; place-items: center; min-height: 260px; }
.dossier-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 16px; }
label { display: grid; gap: 6px; color: var(--muted); font-size: 0.86rem; }
label.wide { grid-column: 1 / -1; }
.actions { justify-content: flex-start; margin: 14px 0; }
.messages { border-top: 1px solid var(--border); padding-top: 14px; display: grid; gap: 10px; }
.message { border-left: 3px solid var(--border); padding: 8px 10px; background: var(--panel-2); border-radius: 0 6px 6px 0; margin-top: 8px; overflow-wrap: anywhere; }
.message.incoming { border-left-color: var(--accent); }
.message.outgoing { border-left-color: #7c3aed; }
.message small { display: block; color: var(--muted); margin-bottom: 3px; }
.send-row { align-items: stretch; }
.send-row input { flex: 1; }
.table { display: grid; gap: 8px; margin-top: 14px; }
.row { display: grid; grid-template-columns: 160px 1fr 120px; gap: 10px; border-bottom: 1px solid var(--border); padding: 10px 0; }
.settings-form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.settings-form h2, .settings-form button { grid-column: 1 / -1; }

@media (max-width: 860px) {
  .shell { padding: 14px; }
  .topbar { align-items: flex-start; flex-direction: column; }
  .split { grid-template-columns: 1fr; }
  .dossier-grid, .settings-form { grid-template-columns: 1fr; }
  .row { grid-template-columns: 1fr; }
  .tabs { overflow-x: auto; }
}