:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --ink: #17212b;
  --muted: #667085;
  --line: #d8dee6;
  --accent: #176b87;
  --accent-strong: #10536a;
  --ok: #157347;
  --warn: #a15c00;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 20px 28px;
  background: #ffffff;
  border-bottom: 1px solid var(--line);
}

h1, h2, p { margin: 0; }
h1 { font-size: 24px; }
h2 { font-size: 18px; margin-bottom: 14px; }
p { color: var(--muted); margin-top: 4px; }

nav { display: flex; gap: 10px; }
nav a {
  color: var(--ink);
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 6px;
}
nav a[aria-current="page"] { background: #e8f3f6; color: var(--accent-strong); }

main { padding: 24px 28px 40px; }

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(140px, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}

.metrics div, .panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
}

.metrics span {
  display: block;
  font-size: 28px;
  font-weight: 700;
}

.metrics small { color: var(--muted); }

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 10px;
  margin-bottom: 14px;
}

button, input, select, textarea {
  font: inherit;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
}

button {
  min-height: 38px;
  padding: 8px 12px;
  cursor: pointer;
}

button.primary {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

button.primary:hover { background: var(--accent-strong); }
.tab.active { border-color: var(--accent); color: var(--accent-strong); background: #e8f3f6; }

label { display: grid; gap: 4px; color: var(--muted); font-size: 13px; }
input, select, textarea { min-height: 38px; padding: 8px 10px; color: var(--ink); }

.table-wrap {
  overflow-x: auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.table-wrap h2 { padding: 16px 16px 0; }
table { width: 100%; border-collapse: collapse; min-width: 1000px; }
th, td { padding: 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0; }
td input, td select { width: 100%; }
.empty { text-align: center; color: var(--muted); padding: 36px; }

.phone-cell strong { display: block; white-space: nowrap; }
.phone-cell small { color: var(--muted); }
.timer { font-variant-numeric: tabular-nums; white-space: nowrap; }
.followups { display: flex; gap: 8px; align-items: center; }
.followups label { display: flex; align-items: center; gap: 4px; color: var(--ink); }
.actions { display: flex; flex-wrap: wrap; gap: 6px; }
.actions button { min-height: 32px; padding: 6px 8px; }

.admin-grid {
  display: grid;
  grid-template-columns: minmax(280px, 420px) 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.stack { display: grid; gap: 12px; }
.list { margin: 0; padding-left: 20px; }
.list li { margin: 8px 0; }

dialog {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0;
  width: min(420px, calc(100vw - 24px));
}

.dialog-form { padding: 18px; display: grid; gap: 12px; }
menu { display: flex; justify-content: end; gap: 8px; padding: 0; margin: 8px 0 0; }

@media (max-width: 760px) {
  .topbar { align-items: flex-start; flex-direction: column; padding: 16px; }
  main { padding: 16px; }
  .metrics, .admin-grid { grid-template-columns: 1fr; }
}