:root {
  color-scheme: light;
  --bg: #f6f8fb;
  --panel: #ffffff;
  --line: #d8dee8;
  --text: #18202b;
  --muted: #667085;
  --accent: #1677ff;
  --danger: #c2410c;
}

* {
  box-sizing: border-box;
}

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

button,
input,
select {
  font: inherit;
}

button {
  border: 0;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  padding: 9px 14px;
}

button.secondary {
  background: #e9eef6;
  color: var(--text);
}

input,
select,
textarea {
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--text);
  padding: 8px 10px;
}

textarea {
  min-height: 86px;
  resize: vertical;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
  padding: 22px 28px;
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.topbar h1 {
  margin: 0;
  font-size: 22px;
}

.topbar p,
.section-header p {
  margin: 6px 0 0;
  color: var(--muted);
}

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

.layout {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr) 330px;
  gap: 16px;
  padding: 16px;
}

.page-shell {
  padding: 16px;
}

.panel,
.login-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.panel {
  padding: 16px;
}

.section-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
}

.tabs {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.tab {
  width: 100%;
  background: #f2f5fa;
  color: var(--text);
  text-align: left;
}

.tab.active {
  background: var(--accent);
  color: #fff;
}

.page-tabs {
  display: flex;
  gap: 8px;
  padding: 12px 16px 0;
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.page-tab {
  border-radius: 6px 6px 0 0;
  background: transparent;
  color: var(--muted);
}

.page-tab.active {
  background: var(--accent);
  color: #fff;
}

.page-section.hidden {
  display: none;
}

.global-message {
  margin: 0;
  padding: 8px 16px 0;
}

.group-editor {
  display: grid;
  gap: 10px;
}

.group-editor form {
  display: grid;
  gap: 8px;
}

.group-page-grid {
  display: grid;
  grid-template-columns: minmax(240px, 320px) minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  margin-top: 18px;
}

.group-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.group-actions button:first-child {
  grid-column: span 2;
}

button.danger {
  background: #fff0ea;
  color: var(--danger);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.section-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}

.filters {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) 180px 130px;
  gap: 10px;
}

.add-form {
  display: grid;
  grid-template-columns: 170px minmax(220px, 1fr) 150px auto;
  gap: 10px;
  margin: 18px 0 10px;
}

.rule-form {
  grid-template-columns: 170px minmax(220px, 1fr) 150px auto;
}

.import-form {
  display: grid;
  grid-template-columns: 150px 130px minmax(180px, 1fr);
  gap: 10px;
  margin: 10px 0 10px;
}

.import-form textarea {
  grid-column: span 3;
}

.import-actions {
  grid-column: span 3;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 12px;
}

.message {
  min-height: 22px;
  color: var(--muted);
}

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

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  border-top: 1px solid var(--line);
  padding: 10px 8px;
  text-align: left;
  vertical-align: middle;
}

th {
  color: var(--muted);
  font-size: 13px;
}

.selected-row {
  background: #f3f7ff;
}

td:last-child {
  text-align: right;
}

.small-btn {
  margin-right: 6px;
}

.delete-btn {
  background: #fff0ea;
  color: var(--danger);
}

.inline-edit {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) 140px minmax(140px, 1fr) auto auto;
  gap: 8px;
}

.rule-inline-edit {
  grid-template-columns: 150px minmax(180px, 1fr) 130px 110px auto auto;
}

.pager {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
  color: var(--muted);
}

dl {
  display: grid;
  grid-template-columns: 100px minmax(0, 1fr);
  gap: 10px;
  margin: 14px 0 0;
}

dt {
  color: var(--muted);
}

dd {
  margin: 0;
  overflow-wrap: anywhere;
}

.urls-title {
  margin-top: 24px;
}

.url-list {
  padding-left: 18px;
  overflow-wrap: anywhere;
}

.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
}

.login-panel {
  width: min(380px, calc(100vw - 32px));
  padding: 28px;
}

.login-panel h1 {
  margin: 0 0 22px;
}

.login-panel form {
  display: grid;
  gap: 14px;
}

.login-panel label {
  display: grid;
  gap: 6px;
  color: var(--muted);
}

.error-text {
  margin: 0;
  color: var(--danger);
}

@media (max-width: 900px) {
  .topbar,
  .section-header {
    align-items: stretch;
    flex-direction: column;
  }

  .layout {
    grid-template-columns: 1fr;
  }

  .add-form {
    grid-template-columns: 1fr;
  }

  .filters,
  .rule-form,
  .import-form,
  .rule-inline-edit,
  .group-page-grid {
    grid-template-columns: 1fr;
  }

  .import-form textarea,
  .import-actions {
    grid-column: auto;
  }

  .inline-edit {
    grid-template-columns: 1fr;
  }
}