:root {
  --navy: #1f3864;
  --blue: #2e75b6;
  --blue-light: #bdd7ee;
  --bg: #f4f6f9;
  --card-bg: #ffffff;
  --text: #1a1a2e;
  --text-muted: #6b7280;
  --border: #e2e6ec;
  --danger: #c00000;
  --danger-dark: #900000;
  --success: #1a7f37;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  background: linear-gradient(135deg, var(--navy), var(--blue));
  color: #fff;
  padding: 18px 24px;
}

.topbar-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.brand { font-size: 22px; font-weight: 700; }
.brand-sub { font-size: 15px; opacity: 0.85; }

.brand-version {
  margin-left: auto;
  font-size: 12px;
  font-family: "SF Mono", "Courier New", monospace;
  background: rgba(255, 255, 255, 0.15);
  padding: 3px 8px;
  border-radius: 12px;
  opacity: 0.9;
}

main {
  max-width: 900px;
  margin: 24px auto;
  padding: 0 16px 48px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 24px 24px;
  box-shadow: 0 1px 2px rgba(16, 24, 40, 0.04);
}

.card h2 {
  margin: 0 0 16px;
  font-size: 16px;
  color: var(--navy);
  border-bottom: 2px solid var(--blue);
  padding-bottom: 8px;
}

.card h3 {
  margin: 20px 0 12px;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.grid {
  display: grid;
  gap: 14px 18px;
}

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

@media (max-width: 640px) {
  .grid-3 { grid-template-columns: 1fr; }
}

.card-hint {
  margin: -8px 0 16px;
  font-size: 13px;
  color: var(--text-muted);
}

.field-optional {
  font-weight: normal;
  font-size: 12px;
  color: var(--text-muted);
}

.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 2px solid var(--border);
}

.tab-btn {
  background: transparent;
  color: var(--text-muted);
  border: none;
  border-radius: 6px 6px 0 0;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: -2px;
}

.tab-btn:hover { color: var(--blue); }

.tab-btn.active {
  color: var(--navy);
  border-bottom: 2px solid var(--blue);
}

.tab-panel {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.tab-panel[hidden] { display: none; }

.ads-users {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

@media (max-width: 900px) {
  .ads-users { grid-template-columns: 1fr; }
}

.ads-user {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.ads-user-header {
  font-size: 13px;
  font-weight: 700;
  color: var(--navy);
}

.ads-user .row-actions { margin-top: 0; }

.ads-user .btn-primary,
.ads-user .btn-secondary {
  flex: 1;
  padding: 8px 10px;
  font-size: 13px;
}

.ads-result {
  font-size: 12px;
  font-family: "SF Mono", "Courier New", monospace;
  color: var(--text-muted);
  word-break: break-word;
  min-height: 16px;
}

.ads-result.ok { color: var(--success); }
.ads-result.error { color: var(--danger); }

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 600;
}

input[type="text"],
input[type="number"],
input[type="password"],
input[type="date"],
input[type="time"] {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 14px;
  color: var(--text);
  background: #fff;
  font-weight: 400;
}

input:focus,
select:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(46, 117, 182, 0.15);
}

select {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 14px;
  color: var(--text);
  background: #fff;
  font-weight: 400;
}

.input-with-button {
  display: flex;
  gap: 6px;
}

.input-with-button input { flex: 1; min-width: 0; }

.ads-user-demographics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.ads-user-demographics input[type="number"] {
  width: 100%;
}

.row-actions {
  margin-top: 18px;
  display: flex;
  align-items: center;
  gap: 12px;
}

button {
  font-size: 14px;
  font-weight: 600;
  border-radius: 6px;
  border: none;
  padding: 10px 18px;
  cursor: pointer;
}

button:disabled { cursor: not-allowed; opacity: 0.6; }

.btn-primary {
  background: var(--blue);
  color: #fff;
}
.btn-primary:hover:not(:disabled) { background: var(--navy); }

.btn-danger {
  background: #fff;
  color: var(--danger);
  border: 1.5px solid var(--danger);
}
.btn-danger:hover:not(:disabled) { background: var(--danger); color: #fff; }

.btn-secondary {
  background: #fff;
  color: var(--blue);
  border: 1.5px solid var(--blue);
}
.btn-secondary:hover:not(:disabled) { background: var(--blue); color: #fff; }

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 6px 12px;
  font-size: 13px;
}
.btn-ghost:hover { border-color: var(--blue); color: var(--blue); }

.status-text {
  font-size: 13px;
  color: var(--text-muted);
}
.status-text.error { color: var(--danger); }
.status-text.ok { color: var(--success); }

.progress-bar-track {
  height: 12px;
  border-radius: 6px;
  background: #eef1f5;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--blue), var(--navy));
  transition: width 0.2s ease;
}

.stats-grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

@media (max-width: 640px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

.stat {
  background: var(--bg);
  border-radius: 8px;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.stat-value {
  font-size: 20px;
  font-weight: 700;
  color: var(--navy);
}

.summary-box {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: 8px;
  background: #eef7ee;
  border: 1px solid #cfe8cf;
  color: #1a5a1a;
  font-size: 14px;
}

.summary-box.error {
  background: #fdeeee;
  border-color: #f3c7c7;
  color: var(--danger-dark);
}

.log-toolbar {
  margin-top: 18px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.log-details {
  margin-top: 8px;
}

.log-details summary {
  cursor: pointer;
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 600;
}

.log-panel {
  margin-top: 10px;
  max-height: 220px;
  overflow-y: auto;
  background: #0e1420;
  color: #cfe3f7;
  border-radius: 8px;
  padding: 10px 12px;
  font-family: "SF Mono", "Courier New", monospace;
  font-size: 12px;
  line-height: 1.6;
}

.log-line.error { color: #ff8a8a; }
.log-line .muted { color: #7a8ba3; }

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 20, 30, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-backdrop[hidden] { display: none; }

.modal {
  background: #fff;
  border-radius: 10px;
  padding: 24px;
  max-width: 420px;
  width: 100%;
}

.modal h3 {
  margin: 0 0 10px;
  color: var(--danger);
}

.modal p { font-size: 14px; color: var(--text); }

.modal code {
  background: var(--bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 13px;
}

.modal input[type="text"] {
  width: 100%;
  margin-top: 6px;
}

.modal-actions {
  margin-top: 18px;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}