:root {
  color-scheme: light;
  --ink: #17202a;
  --muted: #626c78;
  --line: #d8dde5;
  --surface: #f5f7f9;
  --panel: #ffffff;
  --blue: #235f91;
  --green: #13745c;
  --amber: #956614;
  --red: #a13d38;
  --violet: #65518b;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--surface);
}

.topbar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  padding: 22px clamp(18px, 4vw, 48px);
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  font-size: 32px;
  line-height: 1.1;
}

h2 {
  font-size: 20px;
}

.topbar nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
}

.topbar nav a {
  border: 1px solid transparent;
  border-radius: 6px;
  padding: 8px 10px;
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
}

.topbar nav a:hover,
.topbar nav a.active {
  border-color: var(--line);
  color: var(--ink);
  background: var(--surface);
}

main {
  width: min(1440px, 100%);
  margin: 0 auto;
  padding: 24px clamp(16px, 4vw, 48px) 56px;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 14px;
}

.metrics div {
  min-height: 92px;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 14px;
  background: var(--panel);
}

.metrics span,
.directory-heading span,
.directory-heading time {
  color: var(--muted);
  font-size: 12px;
}

.metrics strong {
  display: block;
  margin-top: 10px;
  font-size: 28px;
  line-height: 1;
}

.category-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid var(--line);
  border-radius: 7px 7px 0 0;
  overflow: hidden;
  background: var(--panel);
}

.category-tab {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 52px;
  gap: 10px;
  border-right: 1px solid var(--line);
  padding: 10px 14px;
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
}

.category-tab:last-child {
  border-right: 0;
}

.category-tab:hover,
.category-tab.active {
  color: var(--ink);
  background: #edf3f8;
}

.category-tab.active {
  box-shadow: inset 0 -3px 0 var(--blue);
}

.category-tab strong {
  color: var(--blue);
  font-size: 17px;
}

.directory-band {
  border: 1px solid var(--line);
  border-top: 0;
  background: var(--panel);
}

.directory-heading {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 16px;
  padding: 16px;
  border-bottom: 1px solid var(--line);
}

.directory-heading h2 {
  margin-bottom: 4px;
}

.search-form {
  display: grid;
  gap: 7px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
}

.search-form label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.search-form div {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.search-form input {
  flex: 1 1 280px;
  min-width: 0;
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 11px;
  color: var(--ink);
  background: #fff;
  font: inherit;
  font-size: 14px;
}

.search-form input:focus {
  border-color: var(--blue);
  outline: 2px solid rgba(35, 95, 145, 0.18);
}

.search-form button,
.search-form a,
.button,
.page-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 13px;
  color: var(--blue);
  background: var(--panel);
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}

.search-form button {
  border-color: var(--blue);
  color: #fff;
  background: var(--blue);
}

.search-form button:hover,
.button:hover,
.page-button:hover {
  filter: brightness(0.95);
}

.button-upgrade {
  border-color: var(--amber);
  color: #714b08;
  background: #fff8e8;
}

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

table {
  width: 100%;
  min-width: 900px;
  border-collapse: collapse;
  table-layout: fixed;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 10px 12px;
  overflow-wrap: anywhere;
  text-align: left;
  vertical-align: middle;
  font-size: 13px;
}

th {
  color: var(--muted);
  background: #fafbfc;
  font-size: 11px;
  text-transform: uppercase;
}

th:nth-child(1) { width: 20%; }
th:nth-child(2) { width: 23%; }
th:nth-child(3) { width: 13%; }
th:nth-child(4) { width: 18%; }
th:nth-child(5) { width: 16%; }
th:nth-child(6) { width: 10%; }

td strong,
td span,
td time {
  display: block;
}

td > span,
td time,
.root-name,
.response {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
}

.host-link {
  color: var(--blue);
  font-weight: 750;
  text-decoration: none;
}

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

.badge-line {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.badge {
  display: inline-block;
  width: max-content;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 2px 7px;
  font-size: 11px;
  font-weight: 750;
  line-height: 1.35;
}

.badge-secure,
.badge-webpki {
  border-color: rgba(19, 116, 92, 0.3);
  color: var(--green);
  background: #edf8f4;
}

.badge-dane {
  border-color: rgba(101, 81, 139, 0.3);
  color: var(--violet);
  background: #f5f1fb;
}

.badge-http,
.badge-degraded {
  border-color: rgba(149, 102, 20, 0.32);
  color: #79500b;
  background: #fff8e8;
}

.badge-offline {
  border-color: rgba(161, 61, 56, 0.3);
  color: var(--red);
  background: #fff2f1;
}

.badge-neutral {
  color: var(--muted);
  background: #f3f5f7;
}

.action-cell {
  text-align: right;
}

.action-cell .button {
  width: 100%;
  white-space: nowrap;
}

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 12px 16px;
  color: var(--muted);
  font-size: 13px;
}

.page-button.disabled {
  pointer-events: none;
  opacity: 0.45;
}

.empty {
  height: 120px;
  color: var(--muted);
  text-align: center;
}

.loading,
.error-panel {
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 18px;
  background: var(--panel);
}

@media (max-width: 760px) {
  .topbar {
    align-items: start;
    flex-direction: column;
  }

  .topbar nav {
    justify-content: flex-start;
  }

  h1 {
    font-size: 27px;
  }

  .metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .category-tabs {
    grid-template-columns: 1fr;
  }

  .category-tab {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .category-tab:last-child {
    border-bottom: 0;
  }

  .category-tab.active {
    box-shadow: inset 3px 0 0 var(--blue);
  }

  .table-wrap {
    overflow: visible;
  }

  table {
    min-width: 0;
    table-layout: auto;
  }

  thead {
    display: none;
  }

  tbody,
  tr,
  td {
    display: block;
    width: 100%;
  }

  tr {
    border-bottom: 1px solid var(--line);
    padding: 8px 16px;
  }

  td {
    display: grid;
    grid-template-columns: 82px minmax(0, 1fr);
    gap: 8px;
    border-bottom: 0;
    padding: 7px 0;
  }

  td::before {
    content: attr(data-label);
    color: var(--muted);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
  }

  td > * {
    grid-column: 2;
  }

  td > *:first-child {
    grid-row: 1;
  }

  .action-cell {
    text-align: left;
  }

  .action-cell .button {
    width: max-content;
  }

  td.empty {
    display: block;
    padding: 32px 0;
  }

  td.empty::before {
    display: none;
  }
}