:root {
  --bg-page: #f1f5f9;
  --bg-panel: #ffffff;
  --border: #cbd5e1;
  --border-light: #e2e8f0;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --green-primary: #16a34a;
  --green-hover: #15803d;
  --green-subtle: #f0fdf4;
  --green-border: #bbf7d0;
  --green-text: #166534;
  --danger: #dc2626;
  --danger-hover: #b91c1c;
  --danger-subtle: #fef2f2;
  --danger-border: #fecaca;
  --danger-text: #991b1b;
  --warning: #d97706;
  --warning-subtle: #fffbeb;
  --warning-border: #fde68a;
  --warning-text: #92400e;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-page);
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.app-layout {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Header */
.top-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 4px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-brand-icon {
  width: 36px;
  height: 36px;
  background: var(--green-primary);
  color: #ffffff;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}

.nav-desc {
  font-size: 12px;
  color: var(--text-muted);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Standard Panels */
.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 4px;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: #f8fafc;
  border-bottom: 1px solid var(--border-light);
  gap: 12px;
  flex-wrap: wrap;
}

.panel-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel-title svg {
  color: var(--green-primary);
}

.panel-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel-body {
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Info Bar */
.ip-info-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  padding: 10px 14px;
  background: #f8fafc;
  border: 1px solid var(--border-light);
  border-radius: 4px;
}

.ip-info-col {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.info-label {
  font-size: 11px;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.03em;
}

.info-val {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
}

.info-sub {
  font-size: 11px;
  color: var(--text-muted);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  border-radius: 3px;
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
}

.badge-success {
  background: var(--green-subtle);
  color: var(--green-text);
  border: 1px solid var(--green-border);
}

.badge-warning {
  background: var(--warning-subtle);
  color: var(--warning-text);
  border: 1px solid var(--warning-border);
}

.badge-danger {
  background: var(--danger-subtle);
  color: var(--danger-text);
  border: 1px solid var(--danger-border);
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 600;
  border-radius: 4px;
  cursor: pointer;
  border: 1px solid transparent;
  font-family: inherit;
  line-height: 1.3;
}

.btn-default {
  background: #ffffff;
  color: var(--text-primary);
  border-color: var(--border);
}

.btn-default:hover {
  background: #f1f5f9;
}

.btn-success {
  background: var(--green-primary);
  color: #ffffff;
}

.btn-success:hover {
  background: var(--green-hover);
}

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

.btn-danger-outline:hover {
  background: var(--danger-subtle);
}

.btn-xs {
  padding: 4px 8px;
  font-size: 11px;
}

.btn-group-xs {
  display: flex;
  gap: 4px;
}

/* Alerts */
.alert {
  padding: 10px 14px;
  border-radius: 4px;
  font-size: 13px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.alert-danger {
  background: var(--danger-subtle);
  border: 1px solid var(--danger-border);
  color: var(--danger-text);
}

/* Simulation Section */
.sim-panel {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: 4px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sim-panel-title p {
  font-size: 12px;
}

.sim-form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)) auto;
  gap: 10px;
  align-items: flex-end;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.form-field label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-field-btn {
  justify-content: flex-end;
}

.sim-result-box {
  padding: 10px 14px;
  border-radius: 4px;
  font-size: 12px;
  line-height: 1.5;
}

.sim-result-box.danger {
  background: var(--danger-subtle);
  border: 1px solid var(--danger-border);
  color: var(--danger-text);
}

.sim-result-box.secure {
  background: var(--green-subtle);
  border: 1px solid var(--green-border);
  color: var(--green-text);
}

/* Search Bar */
.search-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 5px 10px;
  width: 100%;
  max-width: 320px;
}

.search-wrap svg {
  color: var(--text-muted);
}

.search-wrap input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 13px;
  width: 100%;
  color: var(--text-primary);
}

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

.table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

.table th {
  padding: 10px 14px;
  background: #f8fafc;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 12px;
  border-bottom: 1px solid var(--border);
}

.table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-light);
  vertical-align: middle;
}

.table tbody tr:hover {
  background: #f8fafc;
}

.service-name-cell {
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.service-name-cell svg {
  color: var(--green-primary);
}

.ip-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.ip-tag {
  background: var(--green-subtle);
  color: var(--green-text);
  border: 1px solid var(--green-border);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 3px;
}

.action-cell {
  display: flex;
  justify-content: flex-end;
  gap: 6px;
}

/* Modals */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 1000;
}

.modal-dialog {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 4px;
  width: 100%;
  max-width: 500px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: column;
}

.modal-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
}

.btn-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 18px;
  cursor: pointer;
  line-height: 1;
}

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

.modal-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.modal-footer {
  padding: 12px 16px;
  border-top: 1px solid var(--border-light);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.form-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
}

.help-text {
  font-size: 11px;
  color: var(--text-muted);
}

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

input[type="text"], select, textarea {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-primary);
  padding: 7px 10px;
  font-size: 13px;
  font-family: inherit;
  outline: none;
  width: 100%;
}

textarea {
  font-family: var(--font-mono);
  font-size: 12px;
  resize: vertical;
}

input[type="text"]:focus, select:focus, textarea:focus {
  border-color: var(--green-primary);
  box-shadow: 0 0 0 1px var(--green-primary);
}

select {
  cursor: pointer;
  max-width: 160px;
}

.code-preview {
  background: #f8fafc;
  border: 1px solid var(--border-light);
  border-radius: 4px;
  padding: 10px 12px;
  overflow-x: auto;
}

.code-preview-title {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 4px;
}

pre {
  margin: 0;
}

code {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-primary);
}

.validation-text {
  font-size: 12px;
  min-height: 14px;
}

.validation-text.error {
  color: var(--danger);
}

.validation-text.success {
  color: var(--green-primary);
}

/* Footer Notice */
.footer-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 4px;
  font-size: 12px;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 8px;
}

.footer-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.footer-item svg {
  color: var(--green-primary);
}

.link-primary {
  color: var(--green-primary);
  text-decoration: none;
  font-weight: 600;
}

.link-primary:hover {
  text-decoration: underline;
}

/* Toast */
.toast-wrapper {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  z-index: 1050;
}

.toast {
  background: #ffffff;
  color: var(--text-primary);
  border: 1px solid var(--border);
  padding: 9px 14px;
  border-radius: 4px;
  font-size: 13px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  display: flex;
  align-items: center;
  gap: 8px;
}

.toast.success {
  border-left: 3px solid var(--green-primary);
}

.toast.error {
  border-left: 3px solid var(--danger);
}

.toast svg {
  flex-shrink: 0;
}

.toast.success svg {
  color: var(--green-primary);
}

.toast.error svg {
  color: var(--danger);
}

/* Utilities */
.font-mono {
  font-family: var(--font-mono);
}

.font-sm {
  font-size: 12px;
}

.text-center {
  text-align: center;
}

.text-muted {
  color: var(--text-muted);
}

.py-4 {
  padding-top: 24px;
  padding-bottom: 24px;
}

.hidden {
  display: none !important;
}