:root {
  --bg: #ffffff;
  --fg: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
  --border-strong: #d1d5db;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  --row-hover: #f9fafb;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  --radius: 8px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

button { font-family: inherit; font-size: inherit; }
input, select { font-family: inherit; font-size: inherit; }

/* Top bar */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand {
  font-weight: 600;
  font-size: 16px;
  letter-spacing: -0.01em;
  color: inherit;
  text-decoration: none;
}
.topbar-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

/* Layout */
main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px;
}

/* Hero */
.hero {
  text-align: center;
  padding: 64px 16px 32px;
}
.hero.compact {
  text-align: left;
  padding: 8px 0 16px;
}
.hero.compact .hero-title,
.hero.compact .hero-sub { display: none; }

.hero-title {
  margin: 0 0 8px;
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.hero-sub {
  margin: 0 0 28px;
  color: var(--muted);
}
.search-row {
  display: flex;
  gap: 10px;
  max-width: 640px;
  margin: 0 auto;
}
.hero.compact .search-row { max-width: 100%; }

.search-input {
  flex: 1;
  padding: 12px 14px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  outline: none;
  transition: border-color 0.1s, box-shadow 0.1s;
}
.search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* Buttons */
.btn {
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 10px 16px;
  cursor: pointer;
  font-weight: 500;
  white-space: nowrap;
  transition: background 0.1s, border-color 0.1s, color 0.1s;
}
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--fg);
}
.btn-ghost:hover { background: var(--row-hover); }
.btn-danger {
  background: var(--danger);
  color: #fff;
}
.btn-danger:hover { background: #b91c1c; }
.btn-sm { padding: 6px 10px; font-size: 13px; }
.btn-link {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  padding: 6px 8px;
}
.btn-link:hover { text-decoration: underline; }
.btn-link-danger { color: var(--danger); }

/* Results */
.results { margin-top: 8px; }
.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg);
}
.table th, .table td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}
.table th {
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  background: var(--row-hover);
}
.table tbody tr:hover { background: var(--row-hover); }
.actions-col { width: 1%; white-space: nowrap; text-align: right; }
.actions-cell { text-align: right; white-space: nowrap; }

.results-empty {
  padding: 32px;
  text-align: center;
  color: var(--muted);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  margin-top: 16px;
}

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(17, 24, 39, 0.45);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 48px 16px;
  z-index: 50;
  overflow-y: auto;
}
.modal-card {
  background: var(--bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  width: 100%;
  max-width: 480px;
}
.modal-card-wide { max-width: 720px; }
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.modal-header h2 {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
}
.modal-close {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 22px;
  line-height: 1;
  color: var(--muted);
  padding: 0 4px;
}
.modal-close:hover { color: var(--fg); }

/* Form */
.form { padding: 20px; display: flex; flex-direction: column; gap: 14px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field span {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.field input, .field select {
  padding: 9px 10px;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  outline: none;
  background: var(--bg);
}
.field input:focus, .field select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}
.field-row { display: flex; gap: 12px; }
.field-row .field { flex: 1; }

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
  margin-top: 6px;
  padding-top: 14px;
}

/* Banners */
.banner {
  margin: 0 20px;
  margin-top: 16px;
  padding: 10px 12px;
  border-radius: 6px;
  font-size: 13px;
}
.banner-error {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid #fecaca;
}

/* Inline confirm */
.confirm-inline {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--muted);
}

/* Tabs */
.tabs {
  display: flex;
  gap: 4px;
  padding: 0 20px;
  border-bottom: 1px solid var(--border);
}
.tab {
  background: none;
  border: none;
  padding: 10px 14px;
  cursor: pointer;
  color: var(--muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  font-weight: 500;
}
.tab:hover { color: var(--fg); }
.tab-active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* Manage body */
.manage-body { padding: 16px 20px 20px; }
.manage-list {
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}
.manage-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
}
.manage-row:last-child { border-bottom: none; }
.manage-row.add-row { background: var(--row-hover); }
.manage-row input, .manage-row select {
  padding: 7px 9px;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  outline: none;
}
.manage-row .grow { display: flex; gap: 8px; }
.manage-row .grow > * { flex: 1; }
.manage-row .label { color: var(--fg); }
.manage-row .label .muted { color: var(--muted); margin-right: 6px; }
.manage-empty {
  padding: 20px;
  color: var(--muted);
  text-align: center;
}

/* Detail page */
.detail { padding: 8px 0 24px; max-width: 720px; }
.back-link {
  display: inline-block;
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
  margin-bottom: 16px;
}
.back-link:hover { color: var(--accent); }

.detail-title {
  margin: 0 0 4px;
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.01em;
  word-break: break-all;
}
.detail-subtitle {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 13px;
}

.detail-list {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 0;
  margin: 0 0 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.detail-list dt,
.detail-list dd {
  margin: 0;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}
.detail-list dt {
  background: var(--row-hover);
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  align-content: center;
}
.detail-list dt:nth-last-of-type(1),
.detail-list dd:nth-last-of-type(1) { border-bottom: none; }
.detail-list dd { word-break: break-word; }
.detail-list .empty { color: var(--muted); }

.detail-actions { display: flex; gap: 10px; }

/* Hostname link in results */
.host-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}
.host-link:hover { text-decoration: underline; }

/* Interfaces section on detail page */
.interfaces { margin: 0 0 24px; }
.interfaces-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.interfaces-header h2 {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
}
.iface-edit-input {
  width: 100%;
  padding: 5px 7px;
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  outline: none;
  font: inherit;
}
.iface-edit-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.15);
}
.iface-error {
  color: var(--danger);
  font-size: 12px;
  padding: 4px 12px;
}
.muted { color: var(--muted); }

[hidden] { display: none !important; }