/* Design tokens */
:root {
  color-scheme: light;
  --entity-bg: #f4f6f8;
  --entity-panel: #ffffff;
  --entity-soft: #f7f9fc;
  --entity-soft-strong: #eef3f8;
  --entity-text: #172033;
  --entity-muted: #5d6879;
  --entity-border: #cbd5e1;
  --entity-border-strong: #aebdcd;
  --entity-primary: #0969da;
  --entity-primary-hover: #075bbd;
  --entity-primary-soft: #e8f2ff;
  --entity-success: #08783e;
  --entity-success-bg: #e8f7ef;
  --entity-warning: #975a00;
  --entity-warning-bg: #fff4d6;
  --entity-error: #b42318;
  --entity-notice-text: #075985;
  --entity-notice-bg: #e0f2fe;
  --entity-notice-border: #7dd3fc;
  --entity-focus: rgb(9 105 218 / 25%);
  --entity-shadow: 0 1px 2px rgb(15 23 42 / 8%);
  --entity-radius: 10px;
  --entity-control-radius: 7px;
  --entity-surface-radius: 8px;
  --entity-character-radius: 6px;
  --entity-page-max-width: 1440px;
  --entity-page-gutter: 32px;
  --entity-panel-padding: 16px;
  --entity-panel-gap: 14px;
  --entity-layout-gap: 10px;
  --entity-inline-gap: 8px;
  --entity-surface-padding: 12px;
  --entity-table-cell-padding: 9px 11px;
  --entity-control-height: 40px;
  --entity-button-height: 38px;
  --entity-focus-outline: 3px solid var(--entity-focus);
  --entity-font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", sans-serif;
  --entity-font-mono: "Cascadia Code", Consolas, monospace;
  font-family: var(--entity-font-sans);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --entity-bg: #0f141a;
  --entity-panel: #161c24;
  --entity-soft: #1d2530;
  --entity-soft-strong: #252f3c;
  --entity-text: #e6edf3;
  --entity-muted: #a8b3c1;
  --entity-border: #344252;
  --entity-border-strong: #536477;
  --entity-primary: #58a6ff;
  --entity-primary-hover: #79b8ff;
  --entity-primary-soft: #172d46;
  --entity-success: #7ee2a8;
  --entity-success-bg: #173527;
  --entity-warning: #f4c56a;
  --entity-warning-bg: #3b2d12;
  --entity-error: #ff938a;
  --entity-notice-text: #9cdcfe;
  --entity-notice-bg: #122f43;
  --entity-notice-border: #285e7a;
  --entity-shadow: 0 1px 2px rgb(0 0 0 / 35%);
}

/* Page foundation */
body.entity-page,
body.entity-page * {
  box-sizing: border-box;
}

body.entity-page {
  margin: 0;
  color: var(--entity-text);
  background: var(--entity-bg);
  line-height: 1.65;
}

body.entity-page a {
  color: var(--entity-primary);
}

/* Page layout and panels */
.entity-main {
  width: min(var(--entity-page-max-width), calc(100% - var(--entity-page-gutter)));
  margin: 0 auto;
  padding: 24px 0 48px;
}

.entity-page-header {
  margin-bottom: 16px;
}

.entity-page-header h1 {
  margin: 0 0 4px;
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  line-height: 1.35;
}

.entity-page-header p,
.entity-panel-heading p {
  margin: 0;
  color: var(--entity-muted);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
  font-size: 0.9rem;
}

.entity-split {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}

.entity-notice {
  margin-bottom: var(--entity-panel-gap);
  padding: 12px 14px;
  color: var(--entity-notice-text);
  background: var(--entity-notice-bg);
  border: 1px solid var(--entity-notice-border);
  border-radius: var(--entity-radius);
}

.entity-panel {
  margin-bottom: var(--entity-panel-gap);
  padding: var(--entity-panel-padding);
  background: var(--entity-panel);
  border: 1px solid var(--entity-border);
  border-radius: var(--entity-radius);
  box-shadow: var(--entity-shadow);
}

.entity-panel:focus {
  outline: var(--entity-focus-outline);
  outline-offset: 2px;
}

.entity-panel-heading {
  margin-bottom: 14px;
}

.entity-panel h2,
.entity-panel h3,
.entity-panel p {
  margin-top: 0;
}

.entity-panel-heading h2,
.entity-about h2 {
  margin-bottom: 4px;
  font-size: 1.12rem;
  line-height: 1.45;
}

/* Form controls and buttons */
.entity-field {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 0;
  color: var(--entity-muted);
  font-size: 0.88rem;
  font-weight: 600;
}

.entity-control {
  width: 100%;
  min-height: var(--entity-control-height);
  padding: 8px 10px;
  color: var(--entity-text);
  font: inherit;
  font-weight: 400;
  background: var(--entity-panel);
  border: 1px solid var(--entity-border-strong);
  border-radius: var(--entity-control-radius);
}

.entity-control:focus,
.entity-button:focus-visible,
.entity-sort-button:focus-visible,
.entity-reference-button:focus-visible,
.entity-chip-button:focus-visible,
.entity-copy-link:focus-visible {
  outline: var(--entity-focus-outline);
  outline-offset: 2px;
}

.entity-button,
.entity-chip-button {
  min-height: var(--entity-button-height);
  padding: 7px 13px;
  color: var(--entity-text);
  font: inherit;
  font-weight: 700;
  background: var(--entity-soft);
  border: 1px solid var(--entity-border-strong);
  border-radius: var(--entity-control-radius);
  cursor: pointer;
}

.entity-button:hover:not(:disabled),
.entity-chip-button:hover {
  background: var(--entity-soft-strong);
}

.entity-button--primary {
  color: #ffffff;
  background: #0969da;
  border-color: #0969da;
}

.entity-button--primary:hover:not(:disabled) {
  background: #075bbd;
}

.entity-button:disabled,
.entity-control:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

/* Tool-specific layouts */
.entity-action-list,
.entity-inline-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--entity-inline-gap);
}

.entity-action-list--end {
  justify-content: flex-end;
  margin-top: 12px;
}

.entity-lookup-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: var(--entity-layout-gap);
}

.entity-popular-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--entity-layout-gap);
  margin-top: 12px;
  color: var(--entity-muted);
  font-size: 0.88rem;
}

.entity-chip-button {
  min-height: 32px;
  padding: 4px 9px;
  font-family: var(--entity-font-mono);
  font-weight: 600;
}

.entity-converter-options,
.entity-converter-grid,
.entity-filter-grid,
.entity-detail-grid,
.entity-about-grid {
  display: grid;
}

.entity-converter-options,
.entity-converter-grid,
.entity-filter-grid,
.entity-detail-grid {
  gap: var(--entity-layout-gap);
}

.entity-converter-options {
  grid-template-columns: repeat(4, minmax(160px, 1fr));
  margin-bottom: 12px;
}

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

.entity-textarea {
  min-height: 150px;
  resize: vertical;
  line-height: 1.55;
}

.entity-monospace {
  font-family: var(--entity-font-mono);
}

.entity-filter-grid {
  grid-template-columns: minmax(280px, 2fr) repeat(3, minmax(160px, 1fr));
}

/* Messages and result state */
.entity-message {
  min-height: 1.5em;
  margin: 10px 0 0;
  color: var(--entity-muted);
}

.entity-message[data-type="success"] {
  color: var(--entity-success);
}

.entity-message[data-type="warning"] {
  color: var(--entity-warning);
}

.entity-message[data-type="error"] {
  color: var(--entity-error);
}

.entity-result-count {
  margin: 0;
  color: var(--entity-muted);
  font-weight: 700;
  white-space: nowrap;
}

/* Entity table and responsive cards */
.entity-table-scroll {
  overflow-x: auto;
  border: 1px solid var(--entity-border);
  border-radius: var(--entity-surface-radius);
}

.entity-table {
  width: 100%;
  min-width: 880px;
  border-collapse: collapse;
}

.entity-table th,
.entity-table td {
  padding: var(--entity-table-cell-padding);
  text-align: left;
  vertical-align: middle;
  border-bottom: 1px solid var(--entity-border);
}

.entity-table th {
  color: var(--entity-text);
  background: var(--entity-soft-strong);
  white-space: nowrap;
}

.entity-table tbody tr:last-child td {
  border-bottom: 0;
}

.entity-table tbody tr:hover,
.entity-table tbody tr.is-selected,
.entity-card.is-selected {
  background: var(--entity-primary-soft);
}

.entity-sort-button,
.entity-reference-button,
.entity-copy-link {
  padding: 0;
  color: var(--entity-primary);
  font: inherit;
  font-weight: 700;
  background: none;
  border: 0;
  cursor: pointer;
}

.entity-reference-button {
  font-family: var(--entity-font-mono);
}

.entity-sort-indicator {
  margin-left: 6px;
  color: var(--entity-muted);
}

.entity-character {
  display: inline-flex;
  min-width: 3.2rem;
  min-height: 2.5rem;
  align-items: center;
  justify-content: center;
  padding: 3px 8px;
  color: var(--entity-text);
  font-size: 1.35rem;
  background: var(--entity-soft);
  border: 1px solid var(--entity-border);
  border-radius: var(--entity-character-radius);
}

.entity-badge {
  display: inline-flex;
  padding: 2px 7px;
  font-size: 0.76rem;
  font-weight: 700;
  border-radius: 999px;
  white-space: nowrap;
}

.entity-badge--safe {
  color: var(--entity-success);
  background: var(--entity-success-bg);
}

.entity-badge--warning {
  color: var(--entity-warning);
  background: var(--entity-warning-bg);
}

.entity-card-list {
  display: none;
}

.entity-card {
  padding: var(--entity-surface-padding);
  background: var(--entity-soft);
  border: 1px solid var(--entity-border);
  border-radius: var(--entity-surface-radius);
}

.entity-card.is-selected {
  border-color: var(--entity-primary);
}

.entity-card-heading {
  display: flex;
  align-items: center;
  gap: var(--entity-layout-gap);
  margin-bottom: var(--entity-layout-gap);
}

.entity-card-values {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 3px 10px;
  margin: 0 0 10px;
}

.entity-card-values dt {
  color: var(--entity-muted);
  font-size: 0.8rem;
}

.entity-card-values dd {
  margin: 0;
  overflow-wrap: anywhere;
}

.entity-empty {
  padding: 28px;
  color: var(--entity-muted);
  text-align: center;
}

/* Pagination and entity details */
.entity-pagination {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 14px;
}

.entity-page-jump {
  display: flex;
  align-items: center;
  gap: var(--entity-inline-gap);
}

.entity-page-jump .entity-control {
  width: 80px;
}

.entity-detail-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
}

.entity-detail-grid > div {
  min-width: 0;
  padding: var(--entity-surface-padding);
  background: var(--entity-soft);
  border: 1px solid var(--entity-border);
  border-radius: var(--entity-surface-radius);
}

.entity-detail-grid dt {
  color: var(--entity-muted);
  font-size: 0.8rem;
  font-weight: 700;
}

.entity-detail-grid dd {
  margin: 4px 0 0;
  overflow-wrap: anywhere;
}

.entity-detail-grid--wide {
  grid-column: span 3;
}

.entity-detail-character {
  font-size: 1.8rem;
}

.entity-copy-link {
  display: inline-block;
  margin-top: 6px;
  font-size: 0.8rem;
}

.entity-related {
  margin-top: 14px;
}

.entity-related h3 {
  margin-bottom: 8px;
  font-size: 1rem;
}

.entity-muted {
  color: var(--entity-muted);
}

.entity-about-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.entity-about-grid h3 {
  margin-bottom: 5px;
  font-size: 1rem;
}

.entity-about-grid ul {
  margin: 0;
  padding-left: 1.4rem;
}

.entity-source {
  margin: 14px 0 0;
  padding-top: 12px;
  color: var(--entity-muted);
  border-top: 1px solid var(--entity-border);
}

body.entity-page kbd,
body.entity-page code {
  font-family: var(--entity-font-mono);
}

/* Responsive layout */
@media (max-width: 900px) {
  .entity-main {
    width: min(100% - 20px, var(--entity-page-max-width));
    padding-top: 16px;
  }

  .entity-mobile-stack {
    flex-direction: column;
    gap: 10px;
  }

  .entity-filter-grid,
  .entity-converter-options {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .entity-detail-grid--wide {
    grid-column: span 2;
  }
}

@media (max-width: 640px) {
  .entity-panel {
    padding: 13px;
  }

  .entity-lookup-row,
  .entity-filter-grid,
  .entity-converter-options,
  .entity-converter-grid,
  .entity-detail-grid,
  .entity-about-grid {
    grid-template-columns: 1fr;
  }

  .entity-detail-grid--wide {
    grid-column: auto;
  }

  .entity-table-scroll {
    display: none;
  }

  .entity-card-list {
    display: grid;
    gap: 9px;
  }

  .entity-pagination {
    flex-direction: column;
    align-items: center;
  }

  .entity-page-jump {
    justify-content: center;
  }

  .entity-action-list {
    width: 100%;
  }

  .entity-action-list .entity-button {
    flex: 1 1 auto;
  }
}