:root {
  color-scheme: light;
  --bg: #eef3f8;
  --surface: rgba(255, 255, 255, 0.92);
  --surface-strong: #ffffff;
  --text: #132238;
  --muted: #55657d;
  --accent: #0b7285;
  --accent-strong: #0f4c5c;
  --border: rgba(19, 34, 56, 0.12);
  --shadow: 0 20px 40px rgba(19, 34, 56, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", sans-serif;
  line-height: 1.5;
  background:
    radial-gradient(circle at top right, rgba(11, 114, 133, 0.18), transparent 24rem),
    linear-gradient(180deg, #f7fafc 0%, #eef3f8 100%);
  color: var(--text);
}

button,
input {
  font: inherit;
}

.hero,
#summary,
#tabs,
#workspace {
  width: min(1200px, calc(100% - 2rem));
  margin-inline: auto;
}

.hero {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 320px);
  align-items: start;
  padding: 2.5rem 0 1.5rem;
}

.hero__copy h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.05;
}

.hero__text {
  max-width: 60ch;
  margin: 0.75rem 0 0;
  color: var(--muted);
}

.eyebrow {
  margin: 0 0 0.75rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-strong);
}

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

.analysis-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  align-items: start;
}

.summary-card,
.panel,
.upload-card,
.browse-panel,
.zone-list {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.upload-card,
.panel,
.browse-panel,
.zone-list,
.summary-card,
.empty-state {
  padding: 1.1rem 1.2rem;
}

.upload-card {
  display: grid;
  gap: 0.5rem;
  align-content: start;
}

.upload-card__label {
  font-weight: 700;
}

.upload-card__hint {
  color: var(--muted);
  font-size: 0.95rem;
}

#dns-file {
  width: 100%;
  color: var(--muted);
}

#summary {
  margin-bottom: 1rem;
}

.summary-card__label,
.summary-card__meta,
.panel__eyebrow,
.zone-list__meta,
.table-note {
  margin: 0;
  color: var(--muted);
}

.summary-card__label,
.panel__eyebrow {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.summary-card__value {
  display: block;
  margin: 0.4rem 0;
  font-size: 2rem;
  line-height: 1;
}

#tabs {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.tab {
  border: 0;
  border-radius: 999px;
  padding: 0.75rem 1rem;
  background: transparent;
  color: var(--muted);
  text-transform: capitalize;
  cursor: pointer;
}

.tab.is-active {
  background: var(--accent);
  color: white;
}

.browse-layout {
  display: grid;
  gap: 1rem;
  grid-template-columns: 280px minmax(0, 1fr);
  align-items: start;
}

.zone-list {
  display: grid;
  gap: 0.85rem;
  align-content: start;
}

.zone-list__header {
  display: grid;
  gap: 0.2rem;
}

.zone-list h2,
.panel h2,
.browse-panel h2,
.empty-state h2 {
  margin: 0;
}

.zone-chip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  width: 100%;
  border: 1px solid transparent;
  border-radius: 14px;
  padding: 0.8rem 0.9rem;
  background: var(--surface-strong);
  color: var(--text);
  text-align: left;
  cursor: pointer;
}

.zone-chip strong,
.type-filter {
  font-size: 0.9rem;
}

.zone-chip.is-active,
.type-filter.is-active {
  border-color: rgba(11, 114, 133, 0.25);
  background: rgba(11, 114, 133, 0.12);
  color: var(--accent-strong);
}

.browse-panel {
  display: grid;
  gap: 1rem;
  grid-template-rows: auto auto minmax(0, 1fr);
  min-height: 0;
}

.record-types-panel {
  gap: 1rem;
  grid-template-rows: auto auto minmax(0, 1fr);
  min-height: 0;
}

.email-records-panel {
  gap: 1rem;
  grid-template-rows: auto auto auto minmax(0, 1fr);
  min-height: 0;
}

.browse-panel__header,
.panel__header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 0.75rem;
}

.toolbar {
  display: grid;
  gap: 0.75rem;
  align-content: start;
}

.browse-toolbar {
  position: sticky;
  top: 0;
  z-index: 2;
  align-self: start;
  padding-bottom: 0.25rem;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 255, 255, 0.98) 82%, rgba(255, 255, 255, 0) 100%);
}

.record-types-toolbar {
  position: sticky;
  top: 0;
  z-index: 2;
  align-self: start;
  padding-bottom: 0.25rem;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 255, 255, 0.98) 82%, rgba(255, 255, 255, 0) 100%);
}

.email-records-toolbar {
  position: sticky;
  top: 0;
  z-index: 2;
  align-self: start;
  padding-bottom: 0.25rem;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 255, 255, 0.98) 82%, rgba(255, 255, 255, 0) 100%);
}

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

#search-query {
  width: 100%;
  padding: 0.8rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-strong);
}

.type-filters,
.pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
}

.type-filter,
.pill {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.45rem 0.8rem;
  background: var(--surface-strong);
  color: var(--muted);
}

.type-filter {
  cursor: pointer;
}

.table-wrap {
  min-height: 0;
  max-height: min(65vh, 42rem);
  overflow: auto;
}

.record-types-panel .table-wrap {
  min-height: 0;
  max-height: min(65vh, 42rem);
  overflow: auto;
}

.email-records-panel .table-wrap {
  min-height: 0;
  max-height: min(65vh, 42rem);
  overflow: auto;
}

.record-types-empty {
  padding: 0.9rem;
  border-radius: 14px;
  background: rgba(19, 34, 56, 0.04);
}

.records-table,
.zones-table {
  width: 100%;
  border-collapse: collapse;
}

.records-table th,
.records-table td,
.zones-table th,
.zones-table td {
  padding: 0.85rem 0.75rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.records-table th,
.zones-table th {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.records-table tbody tr:last-child td,
.zones-table tbody tr:last-child td {
  border-bottom: 0;
}

.record-name {
  font-weight: 600;
}

.record-name-cell {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.proxy-indicator {
  color: var(--accent);
  line-height: 1;
}

.record-value,
.raw-layout pre,
.metric-value {
  word-break: break-word;
}

.metric-value {
  font-weight: 600;
}

.analysis-grid,
.raw-layout {
  margin-bottom: 1.5rem;
}

.panel {
  display: grid;
  gap: 0.85rem;
}

.panel ul {
  margin: 0;
  padding-left: 1.15rem;
}

.panel pre {
  margin: 0;
  padding: 0.9rem;
  border-radius: 14px;
  background: rgba(19, 34, 56, 0.04);
  overflow-x: auto;
}

.stack-list {
  display: grid;
  gap: 0.75rem;
}

.stack-list__item {
  padding: 0.9rem;
  border-radius: 14px;
  background: rgba(19, 34, 56, 0.04);
}

.stack-list__title {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.35rem;
  font-weight: 600;
}

.stack-list__title span {
  word-break: break-word;
}

.stack-list__meta,
.stack-list__body {
  margin: 0;
  color: var(--muted);
  word-break: break-word;
}

.raw-layout {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1.3fr) minmax(280px, 1fr);
}

.raw-layout .panel:first-child {
  grid-row: span 2;
}

.empty-state {
  margin-bottom: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
}

@media (max-width: 800px) {
  .hero,
  .browse-layout,
  .raw-layout {
    grid-template-columns: 1fr;
  }

  .raw-layout .panel:first-child {
    grid-row: auto;
  }

  #tabs {
    overflow-x: auto;
    white-space: nowrap;
    padding-bottom: 0.25rem;
  }
}