/* Theme tokens */
body.ascii-page {
  color-scheme: light;
  --ascii-page: #f4f6f8;
  --ascii-surface: #ffffff;
  --ascii-soft: #f6f8fa;
  --ascii-border: #d0d7de;
  --ascii-text: #1f2328;
  --ascii-muted: #57606a;
  --ascii-accent: #0969da;
  --ascii-accent-hover: #0757b5;
  --ascii-notice: #ddf4ff;
  --ascii-notice-border: #b6e3ff;
  --ascii-notice-text: #0550ae;
  --ascii-code: "Cascadia Code", Consolas, monospace;
  --ascii-shadow: 0 14px 36px rgba(31, 35, 40, 0.07);
  --ascii-content-max: 1440px;
  --ascii-panel-spacing: 16px;
  --ascii-panel-radius: 12px;
  --ascii-control-min-height: 39px;
  --ascii-control-radius: 8px;
  --ascii-form-gap: 12px;
  --ascii-rule: 1px solid var(--ascii-border);
  min-block-size: 100vh;
  margin: 0;
  color: var(--ascii-text);
  background: var(--ascii-page);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}

body.ascii-page[data-theme="dark"] {
  color-scheme: dark;
  --ascii-page: #0d1117;
  --ascii-surface: #161b22;
  --ascii-soft: #21262d;
  --ascii-border: #3d444d;
  --ascii-text: #f0f6fc;
  --ascii-muted: #9da7b3;
  --ascii-accent: #58a6ff;
  --ascii-accent-hover: #79c0ff;
  --ascii-notice: #13233a;
  --ascii-notice-border: #1f6feb;
  --ascii-notice-text: #cae8ff;
  --ascii-shadow: none;
}

/* Page structure */
.ascii-page,
.ascii-page * {
  box-sizing: border-box;
}

.ascii-main {
  inline-size: min(var(--ascii-content-max), calc(100% - 32px));
  margin-inline: auto;
  padding-block: 38px;
}

.ascii-page-header {
  margin-block-end: 18px;
}

.ascii-page-header h1 {
  margin: 0;
  font-size: clamp(1.7rem, 3vw, 2.2rem);
}

.ascii-page-header > p,
.ascii-panel-heading p {
  margin-block: 7px 0;
  color: var(--ascii-muted);
  line-height: 1.65;
}

.ascii-page .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-block-end: 12px;
  color: var(--ascii-muted);
  font-size: 0.9rem;
}

.ascii-page a {
  color: var(--ascii-accent);
  font-weight: 700;
  text-decoration: none;
}

.ascii-page a:is(:hover, :focus-visible) {
  text-decoration: underline;
}

.ascii-page code {
  font-family: var(--ascii-code);
}

/* Panels */
.ascii-notice,
.ascii-panel {
  margin-block-end: var(--ascii-panel-spacing);
  border: var(--ascii-rule);
  border-radius: var(--ascii-panel-radius);
  background: var(--ascii-surface);
  box-shadow: var(--ascii-shadow);
}

.ascii-notice {
  padding: 12px 14px;
  border-color: var(--ascii-notice-border);
  color: var(--ascii-notice-text);
  background: var(--ascii-notice);
  line-height: 1.65;
}

.ascii-panel {
  padding: 18px;
}

.ascii-panel-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-block-end: 14px;
}

.ascii-panel-heading h2,
.ascii-panel h3 {
  margin-block-start: 0;
}

.ascii-panel-heading h2 {
  margin-block-end: 0;
  font-size: 1.1rem;
}

/* Form controls and actions */
.ascii-control,
.ascii-button {
  min-block-size: var(--ascii-control-min-height);
  border: var(--ascii-rule);
  border-radius: var(--ascii-control-radius);
  color: var(--ascii-text);
  background: var(--ascii-surface);
  font: inherit;
}

.ascii-control {
  inline-size: 100%;
  padding: 7px 10px;
}

.ascii-code {
  font-family: var(--ascii-code);
}

.ascii-button {
  padding: 7px 13px;
  background: var(--ascii-soft);
  font-weight: 700;
}

.ascii-button,
.ascii-mini-copy,
.ascii-quick-nav button,
.ascii-copy-cell {
  cursor: pointer;
}

.ascii-button:hover:not(:disabled) {
  border-color: var(--ascii-accent);
  color: var(--ascii-accent);
}

.ascii-button--primary {
  align-self: end;
  border-color: var(--ascii-accent);
  color: #fff;
  background: var(--ascii-accent);
}

.ascii-button--primary:hover:not(:disabled) {
  color: #fff;
  background: var(--ascii-accent-hover);
}

.ascii-page :is(button, input, select, [tabindex]):focus-visible {
  outline: 3px solid color-mix(in srgb, var(--ascii-accent) 28%, transparent);
  outline-offset: 2px;
}

.ascii-field {
  display: grid;
  align-content: start;
  gap: 6px;
  color: var(--ascii-muted);
  font-weight: 700;
}

.ascii-lookup-grid {
  display: grid;
  grid-template-columns: minmax(260px, 2fr) minmax(180px, 1fr) auto;
  align-items: end;
  gap: var(--ascii-form-gap);
}

.ascii-filter-grid {
  display: grid;
  grid-template-columns: minmax(260px, 2fr) minmax(180px, 1fr);
  gap: var(--ascii-form-gap);
}

.ascii-message {
  min-block-size: 1.5em;
  margin-block: 10px 0;
  color: var(--ascii-muted);
}

.ascii-message[data-tone="error"] {
  color: #cf222e;
}

.ascii-message[data-tone="success"] {
  color: #1a7f37;
}

/* Character details */
.ascii-character {
  display: grid;
  place-items: center;
  min-inline-size: 72px;
  min-block-size: 72px;
  padding: 8px;
  border: var(--ascii-rule);
  border-radius: 10px;
  background: var(--ascii-soft);
  font: 700 1.35rem var(--ascii-code);
}

.ascii-detail-grid,
.ascii-escape-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 0 0 16px;
}

.ascii-detail-grid > div,
.ascii-escape-grid > div {
  min-inline-size: 0;
  padding: 10px;
  border: var(--ascii-rule);
  border-radius: 8px;
  background: var(--ascii-soft);
}

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

.ascii-detail-grid dd,
.ascii-escape-grid dd {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin: 5px 0 0;
}

.ascii-detail-grid code,
.ascii-escape-grid code {
  overflow-wrap: anywhere;
  font-weight: 700;
}

.ascii-mini-copy {
  flex: none;
  border: 0;
  border-radius: 6px;
  padding: 4px 7px;
  color: var(--ascii-accent);
  background: transparent;
  font: inherit;
  font-weight: 700;
}

.ascii-mini-copy:hover {
  background: var(--ascii-surface);
}

.ascii-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* ASCII table */
.ascii-quick-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
  margin-block: 14px 8px;
  color: var(--ascii-muted);
  font-size: 0.9rem;
}

.ascii-quick-nav button {
  border: var(--ascii-rule);
  border-radius: 999px;
  padding: 5px 10px;
  color: var(--ascii-accent);
  background: var(--ascii-soft);
  font: inherit;
  font-weight: 700;
}

.ascii-result-count {
  margin-block: 8px;
  color: var(--ascii-muted);
  font-size: 0.9rem;
}

.ascii-table-scroll {
  max-block-size: 680px;
  overflow: auto;
  border: var(--ascii-rule);
  border-radius: 9px;
  scrollbar-color: var(--ascii-border) var(--ascii-soft);
}

.ascii-table {
  inline-size: 100%;
  min-inline-size: 1120px;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 0.9rem;
}

.ascii-table th,
.ascii-table td {
  padding: 9px 10px;
  border-inline-end: var(--ascii-rule);
  border-block-end: var(--ascii-rule);
  text-align: start;
  white-space: nowrap;
}

.ascii-table th:last-child,
.ascii-table td:last-child {
  border-inline-end: 0;
}

.ascii-table thead th {
  position: sticky;
  z-index: 2;
  inset-block-start: 0;
  color: var(--ascii-text);
  background: var(--ascii-soft);
}

.ascii-table tbody tr {
  cursor: pointer;
}

.ascii-table tbody tr:hover,
.ascii-table tbody tr:focus-within {
  background: color-mix(in srgb, var(--ascii-accent) 9%, var(--ascii-surface));
}

.ascii-table tbody tr[data-selected="true"] {
  background: color-mix(in srgb, var(--ascii-accent) 15%, var(--ascii-surface));
}

.ascii-table .ascii-character-cell {
  font: 700 0.95rem var(--ascii-code);
}

.ascii-copy-cell {
  border: 0;
  padding: 0;
  color: var(--ascii-accent);
  background: transparent;
  font: 700 0.88rem var(--ascii-code);
}

.ascii-copy-cell:hover {
  text-decoration: underline;
}

.ascii-category {
  display: inline-flex;
  border-radius: 999px;
  padding: 3px 8px;
  color: var(--ascii-category-text);
  background: var(--ascii-category-background);
  font-size: 0.78rem;
  font-weight: 700;
}

.ascii-category--control {
  --ascii-category-text: #8250df;
  --ascii-category-background: #f0e7ff;
}

.ascii-category--space {
  --ascii-category-text: #57606a;
  --ascii-category-background: #eaeef2;
}

.ascii-category--digit {
  --ascii-category-text: #0550ae;
  --ascii-category-background: #ddf4ff;
}

.ascii-category--uppercase {
  --ascii-category-text: #116329;
  --ascii-category-background: #dafbe1;
}

.ascii-category--lowercase {
  --ascii-category-text: #0a3069;
  --ascii-category-background: #ddf4ff;
}

.ascii-category--symbol {
  --ascii-category-text: #953800;
  --ascii-category-background: #fff1e5;
}

[data-theme="dark"] .ascii-category {
  filter: brightness(0.72) saturate(1.2);
  color: #fff;
}

.ascii-empty {
  padding: 20px;
  color: var(--ascii-muted);
  text-align: center;
}

/* About this tool */
.ascii-about-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.ascii-about :is(ul, ol) {
  padding-inline-start: 22px;
  line-height: 1.8;
}

/* Responsive layout */
@media (max-width: 760px) {
  .ascii-main {
    inline-size: min(100% - 20px, var(--ascii-content-max));
    padding-block: 22px;
  }

  .ascii-panel {
    padding: 14px;
  }

  .ascii-panel-heading {
    align-items: stretch;
  }

  .ascii-panel-heading--table {
    flex-direction: column;
  }

  .ascii-lookup-grid,
  .ascii-filter-grid,
  .ascii-detail-grid,
  .ascii-escape-grid,
  .ascii-about-grid {
    grid-template-columns: 1fr;
  }

  .ascii-button--primary {
    inline-size: 100%;
  }

  .ascii-character {
    min-inline-size: 58px;
    min-block-size: 58px;
  }
}