:root {
  --color-bg: #f5f6f3;
  --color-surface: #ffffff;
  --color-surface-2: #faf9f6;
  --color-ink: #14181f;
  --color-muted: #667085;
  --color-border: #e4e4e0;
  --color-primary: #1f6f5c;
  --color-primary-hover: #175a4a;
  --color-danger: #c53030;
  --color-danger-bg: #fbe9e9;
  --color-success: #1f6f3c;
  --color-accent: #e8a33d;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-ink);
}

.hidden {
  display: none !important;
}

/* ---------------- Login screen ---------------- */

#login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 36px;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 4px 24px rgba(20, 24, 31, 0.06);
}

.login-card h1 {
  margin: 0 0 4px;
  font-size: 22px;
}

.subtitle {
  color: var(--color-muted);
  font-size: 14px;
  margin: 0 0 24px;
}

label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin: 16px 0 6px;
}

input,
select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 14px;
  background: var(--color-surface);
  color: var(--color-ink);
}

input:focus,
select:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}

button {
  cursor: pointer;
  font-size: 14px;
  border-radius: 8px;
  border: none;
  padding: 10px 16px;
  font-weight: 600;
}

.login-card button[type="submit"] {
  width: 100%;
  margin-top: 22px;
  background: var(--color-primary);
  color: #fff;
  padding: 12px;
}

.login-card button[type="submit"]:hover {
  background: var(--color-primary-hover);
}

.error-text {
  color: var(--color-danger);
  font-size: 13px;
  margin-top: 10px;
  min-height: 16px;
}

.success-text {
  color: var(--color-success);
  font-size: 13px;
  margin-top: 10px;
  min-height: 16px;
}

.note-text {
  color: var(--color-muted);
  font-size: 13px;
  margin: 4px 0 16px;
}

/* ---------------- Main app ---------------- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.topbar h1 {
  font-size: 18px;
  margin: 0;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.backend-url-display {
  font-size: 12px;
  color: var(--color-muted);
}

.btn-secondary {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  color: var(--color-ink);
}

.btn-secondary:hover {
  background: var(--color-border);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
}

.tabs {
  display: flex;
  gap: 4px;
  padding: 0 24px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.tab-btn {
  background: none;
  border: none;
  padding: 14px 16px;
  font-weight: 600;
  color: var(--color-muted);
  border-bottom: 2px solid transparent;
  border-radius: 0;
}

.tab-btn.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.tab-content {
  max-width: 980px;
  margin: 0 auto;
  padding: 28px 24px 60px;
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

.pane-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.pane-header h2 {
  margin: 0;
  font-size: 18px;
}

.pane-header h3 {
  margin: 24px 0 0;
  font-size: 15px;
}

/* ---------------- Stat cards ---------------- */

.stat-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 16px;
}

.stat-card .stat-label {
  font-size: 12px;
  color: var(--color-muted);
  margin-bottom: 6px;
}

.stat-card .stat-value {
  font-size: 24px;
  font-weight: 700;
}

.stat-card.status-ok .stat-value {
  color: var(--color-success);
}

.stat-card.status-down .stat-value {
  color: var(--color-danger);
}

/* ---------------- Tables ---------------- */

.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  overflow: hidden;
  margin-top: 12px;
}

.data-table th,
.data-table td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--color-border);
  font-size: 13px;
  vertical-align: top;
}

.data-table th {
  background: var(--color-surface-2);
  color: var(--color-muted);
  font-weight: 600;
}

.data-table tr:last-child td {
  border-bottom: none;
}

.data-table code {
  background: var(--color-surface-2);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 12px;
}

.empty-text {
  color: var(--color-muted);
  font-size: 13px;
  margin-top: 12px;
}

/* ---------------- Forms ---------------- */

.inline-form {
  display: flex;
  gap: 10px;
  margin-bottom: 4px;
  flex-wrap: wrap;
}

.inline-form input {
  flex: 1;
  min-width: 180px;
}

.inline-form button {
  background: var(--color-primary);
  color: #fff;
  white-space: nowrap;
}

.inline-form button:hover {
  background: var(--color-primary-hover);
}

.env-table input {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  padding: 6px 8px;
}

.env-table td:first-child {
  font-weight: 600;
  white-space: nowrap;
}

.copy-btn {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  padding: 4px 10px;
  font-size: 12px;
}