:root {
  --bg: #f4f6f8;
  --card: #fff;
  --text: #1f2933;
  --muted: #6b7280;
  --primary: #5b2d8b;
  --primary-hover: #4a2572;
  --border: #e5e7eb;
  --ok: #0f7b3a;
  --no: #b42318;
  --warn: #b54708;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}
.container { max-width: 1100px; margin: 0 auto; padding: 1.5rem; }
.header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  margin-bottom: 1rem;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  padding-bottom: 1rem;
}
.logo {
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
}
nav a {
  margin-left: 1rem;
  color: var(--text);
  text-decoration: none;
}
nav a:hover { color: var(--primary); }
h1 { margin-top: 0; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
  margin-bottom: 1rem;
}
.card-narrow { max-width: 420px; margin: 2rem auto; }
.session-card { border-left: 4px solid var(--primary); }
.btn, button.btn {
  border: 0;
  border-radius: 8px;
  padding: 0.55rem 1rem;
  cursor: pointer;
  font-size: 0.95rem;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-secondary { background: #e5e7eb; color: var(--text); }
.btn-link {
  background: none;
  border: 0;
  color: var(--muted);
  cursor: pointer;
  text-decoration: underline;
}
.input, input[type="text"], input[type="password"] {
  width: 100%;
  max-width: 480px;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
}
.input-code { max-width: 140px; }
.add-form { display: flex; gap: 0.75rem; flex-wrap: wrap; align-items: center; }
.inline-form { display: inline-block; margin-right: 0.5rem; margin-top: 0.5rem; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td {
  text-align: left;
  padding: 0.75rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
th { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.03em; color: var(--muted); }
.client-name { font-weight: 600; }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.badge {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
}
.badge-ok { background: #dcfCE7; color: var(--ok); }
.badge-no { background: #fee2e2; color: var(--no); }
.badge-warn { background: #ffedd5; color: var(--warn); }
.alert {
  padding: 0.75rem 1rem;
  border-radius: 8px;
  margin-bottom: 1rem;
}
.alert-ok { background: #ecfdf3; color: var(--ok); }
.alert-error { background: #fef2f2; color: var(--no); }
.error-text { color: var(--no); }
.status-active strong { color: var(--ok); }
.status-awaiting_sms strong { color: var(--warn); }
.status-expired strong, .status-error strong { color: var(--no); }