/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-light: #eff6ff;
  --color-danger: #dc2626;
  --color-danger-hover: #b91c1c;
  --color-success: #16a34a;
  --color-warning: #d97706;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  --radius: 6px;
  --radius-lg: 10px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-lg: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
  --transition: 150ms ease;
}

html, body {
  height: 100%;
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-gray-800);
  background: var(--color-gray-50);
}

/* Layout */
.app-layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 220px;
  flex-shrink: 0;
  background: var(--color-gray-900);
  color: #fff;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
}

.sidebar-logo {
  padding: 20px 16px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-logo h1 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.3px;
}

.sidebar-logo p {
  font-size: 11px;
  color: var(--color-gray-400);
  margin-top: 2px;
}

.sidebar-nav {
  flex: 1;
  padding: 12px 0;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 16px;
  color: var(--color-gray-300);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  font-size: 13px;
  font-weight: 500;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.nav-item:hover {
  background: rgba(255,255,255,0.07);
  color: #fff;
}

.nav-item.active {
  background: var(--color-primary);
  color: #fff;
}

.nav-item svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.sidebar-footer {
  padding: 12px 16px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 11px;
  color: var(--color-gray-500);
}

.main-content {
  margin-left: 220px;
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.topbar {
  background: #fff;
  border-bottom: 1px solid var(--color-gray-200);
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-gray-800);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-content {
  padding: 24px;
  flex: 1;
}

/* Auth overlay */
.auth-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.auth-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px;
  width: 360px;
  box-shadow: var(--shadow-lg);
}

.auth-card h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--color-gray-900);
}

.auth-card p {
  font-size: 13px;
  color: var(--color-gray-500);
  margin-bottom: 20px;
}

/* Cards */
.card {
  background: #fff;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-gray-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-header h2 {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-gray-800);
}

.card-body {
  padding: 20px;
}

/* Stat cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: #fff;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
}

.stat-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--color-gray-500);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-gray-900);
  line-height: 1;
}

.stat-sub {
  font-size: 11px;
  color: var(--color-gray-400);
  margin-top: 4px;
}

/* Tables */
.table-wrapper {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

thead th {
  text-align: left;
  padding: 10px 14px;
  background: var(--color-gray-50);
  color: var(--color-gray-500);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--color-gray-200);
  white-space: nowrap;
}

tbody tr {
  border-bottom: 1px solid var(--color-gray-100);
  transition: background var(--transition);
}

tbody tr:last-child {
  border-bottom: none;
}

tbody tr:hover {
  background: var(--color-gray-50);
}

td {
  padding: 11px 14px;
  vertical-align: middle;
  color: var(--color-gray-700);
}

td.text-mono {
  font-family: var(--font-mono);
  font-size: 12px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
  white-space: nowrap;
  line-height: 1.4;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn svg {
  width: 14px;
  height: 14px;
}

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

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
}

.btn-secondary {
  background: #fff;
  color: var(--color-gray-700);
  border-color: var(--color-gray-300);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--color-gray-50);
  border-color: var(--color-gray-400);
}

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

.btn-danger:hover:not(:disabled) {
  background: var(--color-danger-hover);
  border-color: var(--color-danger-hover);
}

.btn-ghost {
  background: transparent;
  color: var(--color-gray-500);
  border-color: transparent;
  padding: 5px 8px;
}

.btn-ghost:hover:not(:disabled) {
  background: var(--color-gray-100);
  color: var(--color-gray-700);
}

.btn-sm {
  padding: 4px 10px;
  font-size: 12px;
}

.btn-icon {
  padding: 5px;
  border-radius: var(--radius);
}

/* Forms */
.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-gray-700);
  margin-bottom: 5px;
}

.form-label .required {
  color: var(--color-danger);
  margin-left: 2px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 8px 12px;
  font-size: 13px;
  font-family: var(--font-sans);
  color: var(--color-gray-800);
  background: #fff;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

.form-input::placeholder {
  color: var(--color-gray-400);
}

.form-textarea {
  resize: vertical;
  min-height: 80px;
}

.form-hint {
  font-size: 11px;
  color: var(--color-gray-400);
  margin-top: 4px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

/* Toggle switch */
.toggle-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.toggle {
  position: relative;
  width: 36px;
  height: 20px;
  flex-shrink: 0;
}

.toggle input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-track {
  position: absolute;
  inset: 0;
  border-radius: 20px;
  background: var(--color-gray-300);
  transition: background var(--transition);
}

.toggle input:checked ~ .toggle-track {
  background: var(--color-success);
}

.toggle-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition);
}

.toggle input:checked ~ .toggle-thumb {
  transform: translateX(16px);
}

/* Badge / Status */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 99px;
  font-size: 11px;
  font-weight: 600;
}

.badge-green {
  background: #dcfce7;
  color: #15803d;
}

.badge-red {
  background: #fee2e2;
  color: #b91c1c;
}

.badge-gray {
  background: var(--color-gray-100);
  color: var(--color-gray-500);
}

.badge-yellow {
  background: #fef9c3;
  color: #854d0e;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 500;
  padding: 16px;
}

.modal {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-gray-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-gray-900);
}

.modal-body {
  padding: 20px;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--color-gray-100);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

/* Log entry expansion */
.log-payload {
  background: var(--color-gray-900);
  color: #e2e8f0;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 12px 14px;
  border-radius: var(--radius);
  overflow-x: auto;
  white-space: pre;
  max-height: 300px;
  overflow-y: auto;
  margin-top: 8px;
}

/* Filters row */
.filters-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.filters-row .form-input,
.filters-row .form-select {
  width: auto;
  flex: 1;
  min-width: 140px;
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-top: 1px solid var(--color-gray-100);
  font-size: 12px;
  color: var(--color-gray-500);
}

.pagination-btns {
  display: flex;
  gap: 4px;
}

/* Health panel */
.health-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.health-item {
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  padding: 14px 16px;
}

.health-item-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-gray-500);
  margin-bottom: 6px;
}

.health-item-value {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-gray-800);
}

/* Destinations sub-table */
.destinations-list {
  background: var(--color-gray-50);
  border-radius: var(--radius);
  padding: 4px 0;
}

.destination-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border-bottom: 1px solid var(--color-gray-100);
  font-size: 12px;
}

.destination-row:last-child {
  border-bottom: none;
}

.destination-url {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-gray-700);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.destination-label {
  font-weight: 500;
  color: var(--color-gray-800);
  white-space: nowrap;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--color-gray-400);
}

.empty-state svg {
  width: 36px;
  height: 36px;
  margin: 0 auto 12px;
  opacity: 0.4;
}

.empty-state p {
  font-size: 13px;
}

/* Toast/Alert */
.alert {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 13px;
  margin-bottom: 16px;
}

.alert-error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: var(--color-danger);
}

.alert-success {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  color: var(--color-success);
}

/* Loading spinner */
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Utility */
.text-sm { font-size: 12px; }
.text-muted { color: var(--color-gray-400); }
.text-mono { font-family: var(--font-mono); }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.flex { display: flex; }
.items-center { align-items: center; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }
.mt-auto { margin-top: auto; }
.w-full { width: 100%; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Webhook URL display */
.webhook-url {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  padding: 3px 8px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 11px;
  max-width: 260px;
}

.webhook-url span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Section header row */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-gray-900);
}

/* Scrollbar styling */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--color-gray-300); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-gray-400); }

/* Responsive adjustments */
@media (max-width: 768px) {
  .sidebar { width: 100%; height: auto; position: static; flex-direction: row; }
  .main-content { margin-left: 0; }
  .form-row { grid-template-columns: 1fr; }
}