:root {
  color-scheme: light;

  /* Theme colors */
  --linux-bg: #f4f6f8;
  --linux-panel: #ffffff;
  --linux-soft: #f7f9fc;
  --linux-soft-strong: #eef3f8;
  --linux-text: #172033;
  --linux-muted: #5d6879;
  --linux-border: #cbd5e1;
  --linux-border-strong: #aebdcd;
  --linux-primary: #0969da;
  --linux-primary-hover: #075bbd;
  --linux-primary-soft: #e8f2ff;
  --linux-success: #08783e;
  --linux-error: #b42318;
  --linux-warning: #8a5200;
  --linux-warning-bg: #fff4d6;
  --linux-warning-border: #e3b341;
  --linux-danger: #b42318;
  --linux-danger-bg: #fff0ef;

  /* Component-state colors */
  --linux-primary-button-text: #fff;
  --linux-primary-button-bg: #0969da;
  --linux-primary-button-border: #0969da;
  --linux-primary-button-hover: #075bbd;
  --linux-favorite-text: #9a6700;
  --linux-favorite-active-text: #7a4d00;
  --linux-favorite-active-bg: #fff4c2;
  --linux-badge-safe-text: #08783e;
  --linux-badge-safe-bg: #e8f7ef;
  --linux-badge-safe-border: #95d5b2;
  --linux-badge-confirm-text: #8a5200;
  --linux-badge-confirm-bg: #fff4d6;
  --linux-badge-confirm-border: #e3b341;
  --linux-badge-admin-text: #824d00;
  --linux-badge-admin-bg: #ffead1;
  --linux-badge-admin-border: #e3a55f;
  --linux-badge-destructive-text: #b42318;
  --linux-badge-destructive-bg: #fff0ef;
  --linux-badge-destructive-border: #f2a6a0;
  --linux-example-bg: #0d1117;
  --linux-example-text: #e6edf3;
  --linux-example-button-bg: #21262d;
  --linux-example-button-border: #444c56;

  /* Supporting colors and layout dimensions */
  --linux-notice-text: #075985;
  --linux-notice-bg: #e0f2fe;
  --linux-notice-border: #7dd3fc;
  --linux-focus: rgb(9 105 218 / 25%);
  --linux-shadow: 0 1px 2px rgb(15 23 42 / 8%);
  --linux-radius: 10px;
  --linux-content-radius: 8px;
  --linux-control-radius: 7px;
  --linux-page-width: 1440px;
  --linux-page-gutter: 32px;
  --linux-panel-padding: 16px;
  --linux-gap: 14px;
  --linux-grid-gap: 10px;
  --linux-action-gap: 8px;
  --linux-control-height: 40px;
  --linux-button-height: 38px;
  --linux-chip-height: 32px;
  --linux-copy-button-height: 30px;
  --linux-table-cell-padding: 9px 11px;
  --linux-font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", sans-serif;
  --linux-font-mono: "Cascadia Code", Consolas, monospace;
  font-family: var(--linux-font-sans);
}

.linux-page, .linux-page * { box-sizing: border-box; }

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

.linux-main {
  width: min(var(--linux-page-width), calc(100% - var(--linux-page-gutter)));
  margin: 0 auto;
  padding: 24px 0 48px;
}

/* Page layout and shared typography */
.linux-page-header { margin-bottom: 16px; }
.linux-page-header h1 { margin: 0 0 4px; font-size: clamp(1.6rem, 3vw, 2.1rem); line-height: 1.35; }
:is(.linux-page-header, .linux-panel-heading) p { margin: 0; color: var(--linux-muted); }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; font-size: .9rem; }
.linux-page a { color: var(--linux-primary); }
.linux-page kbd, .linux-page code { font-family: var(--linux-font-mono); }
.linux-page kbd { padding: 1px 5px; background: var(--linux-soft); border: 1px solid var(--linux-border); border-radius: 4px; }

.linux-split { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; }
.linux-notice {
  margin-bottom: var(--linux-gap);
  padding: 12px 14px;
  color: var(--linux-notice-text);
  background: var(--linux-notice-bg);
  border: 1px solid var(--linux-notice-border);
  border-radius: var(--linux-radius);
}

/* Panels and form controls */
.linux-panel {
  margin-bottom: var(--linux-gap);
  padding: var(--linux-panel-padding);
  background: var(--linux-panel);
  border: 1px solid var(--linux-border);
  border-radius: var(--linux-radius);
  box-shadow: var(--linux-shadow);
}
.linux-panel:focus { outline: 3px solid var(--linux-focus); outline-offset: 2px; }
.linux-panel-heading { margin-bottom: 14px; }
.linux-panel :is(h2, h3, p) { margin-top: 0; }
.linux-panel-heading h2, .linux-panel--about > h2 { margin-bottom: 4px; font-size: 1.12rem; }
.linux-panel h3 { margin-bottom: 6px; font-size: 1rem; }

.linux-filter-grid {
  display: grid;
  grid-template-columns: minmax(280px, 2fr) repeat(5, minmax(145px, 1fr));
  gap: var(--linux-grid-gap);
}
.linux-field { display: flex; flex-direction: column; gap: 5px; min-width: 0; color: var(--linux-muted); font-size: .88rem; font-weight: 600; }
.linux-control {
  width: 100%;
  min-height: var(--linux-control-height);
  padding: 8px 10px;
  color: var(--linux-text);
  font: inherit;
  font-weight: 400;
  background: var(--linux-panel);
  border: 1px solid var(--linux-border-strong);
  border-radius: var(--linux-control-radius);
}

/* Actions */
:is(.linux-button, .linux-chip-button, .linux-favorite-button) {
  min-height: var(--linux-button-height);
  padding: 7px 13px;
  color: var(--linux-text);
  font: inherit;
  font-weight: 700;
  background: var(--linux-soft);
  border: 1px solid var(--linux-border-strong);
  border-radius: var(--linux-control-radius);
  cursor: pointer;
}
.linux-favorite-button { width: 40px; padding: 4px; color: var(--linux-favorite-text); font-size: 1.35rem; }
.linux-chip-button { min-height: var(--linux-chip-height); padding: 4px 9px; font-family: var(--linux-font-mono); }
.linux-button--primary {
  color: var(--linux-primary-button-text);
  background: var(--linux-primary-button-bg);
  border-color: var(--linux-primary-button-border);
}
:is(.linux-button, .linux-chip-button, .linux-favorite-button):hover { background: var(--linux-soft-strong); }
.linux-button--primary:hover { background: var(--linux-primary-button-hover); }
.linux-favorite-button[aria-pressed="true"] { color: var(--linux-favorite-active-text); background: var(--linux-favorite-active-bg); }
:is(.linux-button, .linux-chip-button, .linux-favorite-button, .linux-sort-button, .linux-command-button):focus-visible,
.linux-control:focus {
  outline: 3px solid var(--linux-focus);
  outline-offset: 2px;
}

:is(.linux-personal-grid, .linux-about-grid) { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
:is(.linux-inline-actions, .linux-action-list, .linux-badge-list) { display: flex; flex-wrap: wrap; gap: var(--linux-action-gap); }
.linux-action-list { justify-content: flex-end; }

/* Desktop table and mobile cards */
.linux-table-scroll { overflow: auto; border: 1px solid var(--linux-border); border-radius: var(--linux-content-radius); }
.linux-table { width: 100%; min-width: 980px; border-collapse: collapse; background: var(--linux-panel); }
.linux-table :is(th, td) { padding: var(--linux-table-cell-padding); text-align: left; vertical-align: top; border-bottom: 1px solid var(--linux-border); }
.linux-table th { color: var(--linux-muted); background: var(--linux-soft-strong); font-size: .86rem; white-space: nowrap; }
.linux-table tr:last-child td { border-bottom: 0; }
.linux-table tr.is-selected td { background: var(--linux-primary-soft); }
.linux-sort-button { display: inline-flex; align-items: center; gap: 5px; padding: 0; color: inherit; font: inherit; font-weight: 700; background: none; border: 0; cursor: pointer; }
.linux-command-button { padding: 0; color: var(--linux-primary); font: 700 .95rem var(--linux-font-mono); background: none; border: 0; cursor: pointer; }
.linux-command-button:hover { text-decoration: underline; }
.linux-card-list { display: none; }
.linux-empty { margin: 14px 0 0; padding: 24px; text-align: center; color: var(--linux-muted); background: var(--linux-soft); border-radius: var(--linux-content-radius); }

.linux-badge { display: inline-flex; align-items: center; min-height: 26px; padding: 2px 8px; color: var(--linux-muted); background: var(--linux-soft-strong); border: 1px solid var(--linux-border); border-radius: 999px; font-size: .8rem; font-weight: 700; }
.linux-badge--safe { color: var(--linux-badge-safe-text); background: var(--linux-badge-safe-bg); border-color: var(--linux-badge-safe-border); }
.linux-badge--confirm { color: var(--linux-badge-confirm-text); background: var(--linux-badge-confirm-bg); border-color: var(--linux-badge-confirm-border); }
.linux-badge--admin { color: var(--linux-badge-admin-text); background: var(--linux-badge-admin-bg); border-color: var(--linux-badge-admin-border); }
.linux-badge--destructive { color: var(--linux-badge-destructive-text); background: var(--linux-badge-destructive-bg); border-color: var(--linux-badge-destructive-border); }

/* Command detail */
.linux-title-line { display: flex; align-items: center; gap: var(--linux-grid-gap); }
.linux-title-line h2 { margin: 0; }
.linux-title-line code { font-size: 1.35rem; }
.linux-detail-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--linux-grid-gap); margin: 0 0 16px; }
.linux-detail-value { min-width: 0; padding: 10px 12px; background: var(--linux-soft); border: 1px solid var(--linux-border); border-radius: var(--linux-content-radius); }
.linux-detail-value dt { color: var(--linux-muted); font-size: .8rem; font-weight: 700; }
.linux-detail-value dd { margin: 3px 0 0; overflow-wrap: anywhere; }
.linux-detail-section { margin-top: 16px; }
.linux-option-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--linux-action-gap); margin: 0; padding: 0; list-style: none; }
.linux-option-list li { padding: var(--linux-table-cell-padding); background: var(--linux-soft); border: 1px solid var(--linux-border); border-radius: var(--linux-control-radius); }
.linux-example-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--linux-grid-gap); }
.linux-example { position: relative; min-width: 0; padding: 12px; background: var(--linux-example-bg); border-radius: var(--linux-content-radius); }
.linux-example code { display: block; padding-right: 74px; color: var(--linux-example-text); white-space: pre-wrap; overflow-wrap: anywhere; }
.linux-example .linux-button { position: absolute; top: 7px; right: 7px; min-height: var(--linux-copy-button-height); padding: 3px 8px; color: var(--linux-example-text); background: var(--linux-example-button-bg); border-color: var(--linux-example-button-border); font-size: .78rem; }
.linux-warning { margin-top: 16px; padding: 12px 14px; color: var(--linux-warning); background: var(--linux-warning-bg); border: 1px solid var(--linux-warning-border); border-radius: var(--linux-content-radius); }
.linux-warning p { margin: 4px 0 0; }

/* Feedback and supporting information */
.linux-message { min-height: 1.5em; margin: 10px 0 0; color: var(--linux-muted); font-size: .9rem; }
.linux-message--success { color: var(--linux-success); }
.linux-message--error { color: var(--linux-error); }
.linux-result-count { flex: 0 0 auto; font-weight: 700; }
.linux-about-grid ul { margin: 0; padding-left: 1.3rem; }
.linux-source { margin-bottom: 0; padding-top: 12px; border-top: 1px solid var(--linux-border); color: var(--linux-muted); font-size: .88rem; }

/* Dark theme token overrides */
body.linux-theme-dark {
  color-scheme: dark;

  /* Only color tokens change between themes; layout dimensions remain shared. */
  --linux-bg: #0d1117;
  --linux-panel: #161b22;
  --linux-soft: #1c2128;
  --linux-soft-strong: #21262d;
  --linux-text: #e6edf3;
  --linux-muted: #9da7b3;
  --linux-border: #30363d;
  --linux-border-strong: #46505c;
  --linux-primary: #58a6ff;
  --linux-primary-hover: #79b8ff;
  --linux-primary-soft: #152b44;
  --linux-notice-text: #9cd7ff;
  --linux-notice-bg: #102a3a;
  --linux-notice-border: #285b75;
  --linux-warning: #f1c66c;
  --linux-warning-bg: #382d14;
  --linux-warning-border: #80631b;
  --linux-danger: #ffaaa4;
  --linux-danger-bg: #3b1e20;
  --linux-primary-button-text: #fff;
  --linux-primary-button-bg: #1f6feb;
  --linux-primary-button-border: #388bfd;
  --linux-primary-button-hover: #1f6feb;
  --linux-favorite-active-text: #ffd866;
  --linux-favorite-active-bg: #3d3315;
  --linux-badge-safe-text: #7ee2a8;
  --linux-badge-safe-bg: #143322;
  --linux-badge-safe-border: #2d6643;
  --linux-badge-confirm-text: #f1c66c;
  --linux-badge-confirm-bg: #382d14;
  --linux-badge-confirm-border: #80631b;
  --linux-badge-admin-text: #f5ba73;
  --linux-badge-admin-bg: #3b2816;
  --linux-badge-admin-border: #845a2d;
  --linux-badge-destructive-text: #ffaaa4;
  --linux-badge-destructive-bg: #3b1e20;
  --linux-badge-destructive-border: #7d3538;
  --linux-shadow: none;
}

/* Responsive layout */
@media (max-width: 1100px) {
  /* Preserve usable filters and command details on tablet widths. */
  .linux-filter-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .linux-field--search { grid-column: span 2; }
  .linux-detail-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 720px) {
  /* Page and stacked controls */
  :root { --linux-page-gutter: 20px; --linux-panel-padding: 13px; }
  .linux-main { padding-top: 16px; }
  .linux-mobile-stack { flex-direction: column; align-items: stretch; gap: 12px; }

  .linux-filter-grid, .linux-personal-grid, .linux-about-grid, .linux-detail-grid { grid-template-columns: 1fr; }
  .linux-field--search { grid-column: auto; }
  .linux-option-list, .linux-example-list { grid-template-columns: 1fr; }

  /* Actions */
  .linux-action-list { justify-content: flex-start; }

  /* Replace the wide table with command cards. */
  .linux-table-scroll { display: none; }
  .linux-card-list { display: grid; gap: 9px; }
  .linux-list-card { padding: 12px; background: var(--linux-soft); border: 1px solid var(--linux-border); border-radius: var(--linux-content-radius); }
  .linux-list-card.is-selected { background: var(--linux-primary-soft); border-color: var(--linux-primary); }
  .linux-list-card :is(h3, p) { margin: 0 0 5px; }
  .linux-list-card__meta { color: var(--linux-muted); font-size: .85rem; }

  /* Keep example copy controls above wrapped command text. */
  .linux-example code { padding-right: 0; padding-top: 34px; }
}