:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --border: #dfe2e6;
  --text: #1f2328;
  --muted: #6b7280;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-bg: #eef2ff;
  --danger: #b42318;
  --danger-bg: #fef2f2;
  --success: #067647;
  --success-bg: #ecfdf3;
  --warn: #b54708;
  --warn-bg: #fffaeb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 0.9375rem;
}

a {
  color: var(--accent);
}

/* ---- login / setup cards ---- */

.center-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 32px;
  width: 100%;
  max-width: 380px;
}

.card h1 {
  font-size: 1.25rem;
  margin: 0 0 4px;
}

.card .subtitle {
  color: var(--muted);
  font-size: 0.875rem;
  margin: 0 0 24px;
}

.error {
  background: var(--danger-bg);
  color: var(--danger);
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 0.8125rem;
  margin-top: 16px;
  display: none;
}

.error.visible {
  display: block;
}

.loading {
  color: var(--muted);
  font-size: 0.9375rem;
}

/* ---- shell (sidebar + content) ---- */

.shell {
  display: flex;
  min-height: 100vh;
  align-items: stretch;
}

.sidebar {
  width: 220px;
  flex-shrink: 0;
  background: var(--card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 20px 0;
}

.nav-brand {
  font-weight: 700;
  padding: 0 20px 20px;
}

.sidebar nav {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.sidebar nav a {
  padding: 9px 20px;
  color: var(--text);
  text-decoration: none;
  font-size: 0.875rem;
  border-right: 3px solid transparent;
}

.sidebar nav a:hover {
  background: var(--bg);
}

.sidebar nav a.active {
  background: var(--accent-bg);
  color: var(--accent);
  font-weight: 600;
  border-right-color: var(--accent);
}

.nav-section {
  padding: 16px 20px 4px;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.nav-logout {
  margin: 12px 20px 0;
  width: auto;
  padding: 7px 0;
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
  font-weight: 500;
}

.nav-logout:hover {
  background: var(--bg);
  color: var(--text);
}

.main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 28px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
}

.topbar h1 {
  font-size: 1.0625rem;
  margin: 0;
}

.topbar .who {
  font-size: 0.8125rem;
  color: var(--muted);
}

.topbar .who strong {
  color: var(--text);
}

.content {
  padding: 24px 28px;
  max-width: 1100px;
  width: 100%;
}

.content .note {
  color: var(--muted);
  font-size: 0.875rem;
  margin-bottom: 20px;
}

/* ---- generic buttons ---- */

button, .btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  line-height: 1.2;
}

button:hover, .btn:hover {
  background: var(--accent-hover);
}

button:disabled {
  opacity: 0.6;
  cursor: default;
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

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

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

.btn-danger:hover {
  background: #8f1c11;
}

.btn-sm {
  padding: 4px 10px;
  font-size: 0.8125rem;
}

/* form pages that aren't the centered login card use full-width buttons only when explicitly asked */
form.stacked button[type='submit'] {
  width: 100%;
  margin-top: 24px;
  justify-content: center;
}

/* ---- forms ---- */

label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  margin: 14px 0 4px;
}

input, select, textarea {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.9375rem;
  font-family: inherit;
  background: #fff;
  color: var(--text);
}

textarea {
  resize: vertical;
}

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

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 16px;
}

.form-grid .full {
  grid-column: 1 / -1;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
}

.checkbox-row input {
  width: auto;
}

.checkbox-row label {
  margin: 0;
}

.form-actions {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

/* ---- toolbar / page header ---- */

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.toolbar h2 {
  font-size: 1.125rem;
  margin: 0;
}

.toolbar .actions {
  display: flex;
  gap: 8px;
}

.breadcrumb {
  font-size: 0.8125rem;
  color: var(--muted);
  margin-bottom: 4px;
}

.breadcrumb a {
  color: var(--muted);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

/* ---- tables ---- */

.table-wrap {
  overflow-x: auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

table.data-table th, table.data-table td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

table.data-table th {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--muted);
  background: var(--bg);
}

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

table.data-table tbody tr:hover {
  background: var(--bg);
}

table.data-table td.actions {
  display: flex;
  gap: 6px;
  white-space: nowrap;
}

.empty-state {
  padding: 40px 20px;
  text-align: center;
  color: var(--muted);
  font-size: 0.875rem;
}

/* ---- badges ---- */

.badge {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--bg);
  color: var(--muted);
}

.badge-success { background: var(--success-bg); color: var(--success); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }
.badge-warn { background: var(--warn-bg); color: var(--warn); }
.badge-accent { background: var(--accent-bg); color: var(--accent); }

/* ---- stat tiles (dashboard financeiro) ---- */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.stat-tile {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
}

.stat-tile .label {
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 4px;
}

.stat-tile .value {
  font-size: 1.4rem;
  font-weight: 700;
}

.stat-tile.positive .value { color: var(--success); }
.stat-tile.negative .value { color: var(--danger); }

/* ---- tabs ---- */

.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}

.tabs a {
  padding: 8px 14px;
  font-size: 0.875rem;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}

.tabs a.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

/* ---- cards / panels ---- */

.panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 16px;
}

.panel h3 {
  font-size: 0.9375rem;
  margin: 0 0 14px;
}

.field-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px 20px;
}

.field-list dt {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--muted);
  margin: 0;
}

.field-list dd {
  margin: 2px 0 0;
  font-size: 0.9375rem;
}

/* ---- dashboard module grid ---- */

.modules {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}

.modules a {
  display: block;
  padding: 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  text-decoration: none;
  color: var(--text);
}

.modules a:hover {
  border-color: var(--accent);
}

.modules a .name {
  font-weight: 600;
  font-size: 0.9375rem;
}

.modules a .desc {
  color: var(--muted);
  font-size: 0.8125rem;
  margin-top: 4px;
}

/* ---- dialog (add/edit modals) ---- */

dialog {
  border: none;
  border-radius: 8px;
  padding: 24px;
  width: 100%;
  max-width: 480px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
}

dialog::backdrop {
  background: rgba(15, 23, 42, 0.4);
}

dialog h3 {
  margin: 0 0 16px;
  font-size: 1.0625rem;
}

/* ---- toast ---- */

.toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  padding: 10px 16px;
  border-radius: 6px;
  background: var(--text);
  color: #fff;
  font-size: 0.875rem;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.2s, transform 0.2s;
  z-index: 1000;
  max-width: 360px;
}

.toast.visible {
  opacity: 1;
  transform: translateY(0);
}

.toast-success {
  background: var(--success);
}

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

/* ---- output/console blocks (ferramentas) ---- */

pre.console {
  background: #0f172a;
  color: #e2e8f0;
  padding: 16px;
  border-radius: 8px;
  font-family: 'SFMono-Regular', Consolas, Menlo, monospace;
  font-size: 0.8125rem;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

/* ---- árvore de blocos/subredes (IPAM) ---- */

.ipam-tree {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ipam-node {
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--card);
}

.ipam-node > summary {
  list-style: none;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px 12px;
  cursor: pointer;
}

.ipam-node > summary::-webkit-details-marker {
  display: none;
}

.ipam-node > summary::before {
  content: '▸';
  color: var(--muted);
  font-size: 0.75rem;
  width: 10px;
}

.ipam-node[open] > summary::before {
  content: '▾';
}

.ipam-node.ipam-leaf > summary::before {
  content: '';
  width: 10px;
}

.ipam-cidr {
  font-family: 'SFMono-Regular', Consolas, Menlo, monospace;
  font-weight: 600;
}

.ipam-nome {
  font-weight: 600;
}

.ipam-desc {
  color: var(--muted);
  font-size: 0.8125rem;
}

.ipam-actions {
  margin-left: auto;
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.ipam-children {
  padding: 4px 12px 12px 28px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ipam-children .ipam-node {
  border-color: var(--border);
}

dialog.wide {
  max-width: 640px;
}