/* ──────────────────────────────────────────────────────────────────────────
   Awesome Automated AI/ML — Catalog UI
   A frontier observatory for AutoML tools.

   Design intent:
   - Calm, scientific, dense. Not marketing. Not a card grid.
   - Domain world: observatory at night. Stars, magnitudes, light curves.
   - Single accent (young-star blue-white), warm copper for activity warmth,
     red-giant for declining, life-green only for "still alive" pulse.
   - Borders-only depth strategy. Whisper-quiet elevation via lightness ticks.
   - Tokens named for the product's world.

   Architecture: single CSS file with explicit cascade layers — the 2026
   pattern used by shadcn/ui, Tailwind v4, and Astro Starlight. Print is the
   last layer; later sections in the file can override earlier ones predictably
   without specificity wars.
   ────────────────────────────────────────────────────────────────────────── */

@layer tokens, base, layout, components, utilities, print;

@layer tokens {
  :root {
    color-scheme: dark light;

    /* Surfaces — dark-first. Same hue (indigo), only lightness shifts.
     Each tick is ~2L points — whisper layering. */
    --void: oklch(0.16 0.012 270);
    --void-2: oklch(0.185 0.013 270);
    --surface: oklch(0.21 0.014 268);
    --surface-2: oklch(0.245 0.016 266);
    --surface-3: oklch(0.28 0.018 264);

    /* Edges — low alpha, blend with surface. */
    --edge: oklch(0.42 0.02 265 / 0.22);
    --edge-mute: oklch(0.42 0.02 265 / 0.1);
    --edge-strong: oklch(0.55 0.04 260 / 0.4);
    --edge-focus: oklch(0.78 0.16 245 / 0.65);

    /* Foreground hierarchy — warm starlight against cool void.
     Four levels, used deliberately. */
    --starlight: oklch(0.965 0.008 95);
    --moonlight: oklch(0.78 0.012 250);
    --dust: oklch(0.6 0.01 248);
    --shadow-ink: oklch(0.42 0.008 248);

    /* Single accent — Sirius-blue / young O-class star. */
    --young-star: oklch(0.78 0.16 245);
    --young-star-soft: oklch(0.78 0.16 245 / 0.16);
    --young-star-dim: oklch(0.68 0.13 245);

    /* Warmth accent — for hover micro-glow and copper details. */
    --copper: oklch(0.74 0.13 55);
    --copper-soft: oklch(0.74 0.13 55 / 0.14);

    /* Semantic — used surgically. */
    --red-giant: oklch(0.68 0.18 28);
    --red-giant-soft: oklch(0.68 0.18 28 / 0.15);
    --life: oklch(0.76 0.16 145);
    --life-soft: oklch(0.76 0.16 145 / 0.14);

    /* Stellar marker — magnitudes by star count tier.
     Brightest stars are warmest in the sky; we mirror that. */
    --mag-5: oklch(0.9 0.14 78); /* ≥10k stars: bright supergiant */
    --mag-4: oklch(0.8 0.13 60); /* ≥1k:   bright main-sequence */
    --mag-3: oklch(0.68 0.1 50); /* ≥100:  copper */
    --mag-2: oklch(0.55 0.07 45); /* <100:  dim */
    --mag-paper: oklch(0.62 0.06 80); /* external paper / non-repo */
    --mag-extinct: oklch(0.42 0.015 40); /* archived */

    /* Typography. Variable fonts. */
    --font-ui: "Inter", "InterVariable", system-ui, -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
    --font-mono: "JetBrains Mono", "JetBrainsMonoVariable", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
    --font-display: "Instrument Serif", Georgia, "Times New Roman", serif;

    /* Spacing — 4px base. */
    --s-1: 4px;
    --s-2: 8px;
    --s-3: 12px;
    --s-4: 16px;
    --s-5: 24px;
    --s-6: 32px;
    --s-7: 48px;
    --s-8: 64px;

    /* Radii. */
    --r-xs: 4px;
    --r-sm: 6px;
    --r-md: 10px;
    --r-lg: 14px;
    --r-pill: 999px;

    /* Layout. */
    --sidebar-w: 264px;
    --topbar-h: 56px;
    --sheet-w: 440px;

    /* Motion. */
    --ease-out: cubic-bezier(0.2, 0.8, 0.2, 1);
    --ease-in: cubic-bezier(0.5, 0, 0.8, 0.2);
    --dur-1: 120ms;
    --dur-2: 200ms;
    --dur-3: 320ms;
  }

  /* Light mode — a daytime observatory deck.
   Same hue, inverted lightness, slightly warmer. */
  :root[data-theme="light"] {
    color-scheme: light;
    --void: oklch(0.985 0.005 95);
    --void-2: oklch(0.965 0.006 90);
    --surface: oklch(0.99 0.004 95);
    --surface-2: oklch(0.955 0.008 90);
    --surface-3: oklch(0.94 0.01 85);
    --edge: oklch(0.55 0.02 260 / 0.18);
    --edge-mute: oklch(0.55 0.02 260 / 0.08);
    --edge-strong: oklch(0.42 0.03 260 / 0.32);
    --edge-focus: oklch(0.48 0.2 245 / 0.5);

    --starlight: oklch(0.2 0.02 268);
    --moonlight: oklch(0.38 0.015 255);
    --dust: oklch(0.52 0.01 252);
    --shadow-ink: oklch(0.68 0.008 250);

    --young-star: oklch(0.48 0.2 245);
    --young-star-soft: oklch(0.48 0.2 245 / 0.12);
    --young-star-dim: oklch(0.58 0.16 245);

    --mag-5: oklch(0.65 0.18 50);
    --mag-4: oklch(0.62 0.16 55);
    --mag-3: oklch(0.58 0.12 60);
    --mag-2: oklch(0.55 0.07 65);
    --mag-paper: oklch(0.55 0.08 80);
    --mag-extinct: oklch(0.72 0.015 40);
  }
} /* end @layer tokens */

@layer base {
  /* ── Reset & base ─────────────────────────────────────────────────────── */

  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }
  * {
    margin: 0;
    padding: 0;
  }

  html {
    font-family: var(--font-ui);
    font-feature-settings: "cv11", "ss03", "ss04", "liga";
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
  }

  body {
    background: var(--void);
    color: var(--starlight);
    font-size: 14px;
    line-height: 1.5;
    min-height: 100dvh;
    overflow: hidden; /* prevent body scroll; main pane scrolls */
  }

  /* Subtle ambient glow — a single radial breath of starlight at the top.
   Whisper. Not a hero gradient. */
  body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background:
      radial-gradient(ellipse 80% 50% at 20% -10%, oklch(0.32 0.06 260 / 0.45) 0%, transparent 60%),
      radial-gradient(ellipse 60% 40% at 90% 100%, oklch(0.32 0.04 30 / 0.18) 0%, transparent 60%);
    mix-blend-mode: screen;
  }

  :root[data-theme="light"] body::before {
    background: radial-gradient(ellipse 80% 50% at 20% -10%, oklch(0.85 0.06 245 / 0.35) 0%, transparent 60%);
    mix-blend-mode: multiply;
  }

  a {
    color: var(--starlight);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition:
      color var(--dur-1) var(--ease-out),
      border-color var(--dur-1) var(--ease-out);
  }
  a:hover {
    color: var(--young-star);
    border-bottom-color: var(--edge-focus);
  }

  button {
    font: inherit;
    color: inherit;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
  }

  input {
    font: inherit;
    color: inherit;
    background: none;
    border: none;
  }

  [hidden] {
    display: none;
  }

  /* Custom focus — accent-aware, never default browser ring. */
  :focus {
    outline: none;
  }
  :focus-visible {
    outline: 2px solid var(--edge-focus);
    outline-offset: 1px;
    border-radius: var(--r-sm);
  }
} /* end @layer base */

@layer layout {
  /* ── Layout grid ───────────────────────────────────────────────────────── */

  .app {
    display: grid;
    grid-template-columns: var(--sidebar-w) 1fr;
    grid-template-rows: var(--topbar-h) 1fr;
    grid-template-areas:
      "topbar topbar"
      "side   main";
    height: 100dvh;
    position: relative;
    z-index: 1;
  }

  .topbar {
    grid-area: topbar;
  }
  .side {
    grid-area: side;
  }
  .main {
    grid-area: main;
    overflow-y: auto;
    overflow-x: hidden;
  }
} /* end @layer layout */

@layer components {
  /* ── Top bar ───────────────────────────────────────────────────────────── */

  .topbar {
    display: flex;
    align-items: center;
    gap: var(--s-4);
    padding: 0 var(--s-5);
    border-bottom: 1px solid var(--edge);
    background: linear-gradient(180deg, var(--void) 0%, var(--void-2) 100%);
    backdrop-filter: blur(8px);
  }

  .brand {
    display: flex;
    align-items: center;
    gap: var(--s-2);
    user-select: none;
  }

  .brand__logo {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    margin-right: 4px;
    border-radius: 50%;
    background: var(--surface);
    border: 1px solid var(--edge);
    overflow: hidden;
    transition:
      border-color var(--dur-2) var(--ease-out),
      box-shadow var(--dur-2) var(--ease-out);
  }
  /* Logo fills the circle generously — viewBox already has its own breathing room. */
  .brand__logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 2px;
  }
  /* Hover on the brand link wakes a quiet starlight glow.
   The brand becomes the home button, not a decoration. */
  .brand:hover .brand__logo {
    border-color: var(--young-star);
    box-shadow: 0 0 16px -4px oklch(from var(--young-star) l c h / 0.55);
  }

  /* Theme-aware logo: show the variant that contrasts with current bg.
   Dark theme (default) uses logo-dark (light strokes); light theme uses dark strokes.
   Both images are stacked; only one is visible. */
  .brand__logo img.brand__logo-light {
    display: none;
  }
  .brand__logo img.brand__logo-dark {
    display: block;
  }

  :root[data-theme="light"] .brand__logo img.brand__logo-light {
    display: block;
  }
  :root[data-theme="light"] .brand__logo img.brand__logo-dark {
    display: none;
  }

  @media (prefers-color-scheme: light) {
    :root:not([data-theme]) .brand__logo img.brand__logo-light {
      display: block;
    }
    :root:not([data-theme]) .brand__logo img.brand__logo-dark {
      display: none;
    }
  }

  .brand__mark {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 400;
    letter-spacing: -0.01em;
    color: var(--starlight);
    font-style: italic;
    line-height: 1;
  }

  .brand__sub {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--dust);
  }

  /* Freshness pip — green when data is fresh (≤8d), copper when staler.
   No pulse: the catalog refreshes weekly, not in real time. */
  .live-dot {
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--life);
    box-shadow: 0 0 0 1px oklch(from var(--life) l c h / 0.4);
  }
  .live-dot[data-stale="true"] {
    background: var(--copper);
    box-shadow: 0 0 0 1px oklch(from var(--copper) l c h / 0.4);
  }

  .topbar__spacer {
    flex: 1;
  }

  /* Command palette trigger — a Vercel/Linear-style search lozenge. */
  .cmdk-trigger {
    display: flex;
    align-items: center;
    gap: var(--s-3);
    height: 32px;
    padding: 0 var(--s-2) 0 var(--s-3);
    min-width: 320px;
    border-radius: var(--r-sm);
    border: 1px solid var(--edge);
    background: var(--surface);
    color: var(--dust);
    font-size: 13px;
    transition: all var(--dur-1) var(--ease-out);
  }

  .cmdk-trigger:hover {
    background: var(--surface-2);
    border-color: var(--edge-strong);
    color: var(--moonlight);
  }

  .cmdk-trigger__hint {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    margin-left: auto;
    padding: 2px 6px;
    border-radius: var(--r-xs);
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: 0.04em;
    color: var(--dust);
    background: var(--void);
    border: 1px solid var(--edge-mute);
  }

  .topbar__actions {
    display: flex;
    align-items: center;
    gap: var(--s-1);
  }

  .icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--r-sm);
    color: var(--moonlight);
    transition: all var(--dur-1) var(--ease-out);
  }

  .icon-btn:hover {
    background: var(--surface-2);
    color: var(--starlight);
  }

  .icon-btn svg {
    width: 16px;
    height: 16px;
  }

  /* ── Sidebar (sections → categories) ───────────────────────────────────── */

  .side {
    border-right: 1px solid var(--edge);
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--s-4) var(--s-3) var(--s-6);
    scrollbar-width: thin;
    scrollbar-color: var(--edge) transparent;
  }

  .side::-webkit-scrollbar {
    width: 8px;
  }
  .side::-webkit-scrollbar-thumb {
    background: var(--edge);
    border-radius: var(--r-pill);
  }

  .section-group {
    margin-bottom: var(--s-3);
  }

  .section-group__head {
    display: flex;
    align-items: center;
    gap: var(--s-2);
    width: 100%;
    padding: var(--s-2) var(--s-3);
    border-radius: var(--r-sm);
    color: var(--moonlight);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    text-align: left;
    transition: color var(--dur-1) var(--ease-out);
  }
  .section-group__head:hover {
    color: var(--starlight);
  }

  .section-group__chevron {
    width: 10px;
    height: 10px;
    transition: transform var(--dur-2) var(--ease-out);
    color: var(--dust);
  }
  .section-group[data-open="true"] .section-group__chevron {
    transform: rotate(90deg);
  }

  .section-group__count {
    margin-left: auto;
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--dust);
    letter-spacing: 0;
  }

  .section-group__list {
    display: none;
    flex-direction: column;
    gap: 1px;
    margin-top: var(--s-1);
  }
  .section-group[data-open="true"] .section-group__list {
    display: flex;
  }

  .cat {
    display: flex;
    align-items: center;
    gap: var(--s-2);
    width: 100%;
    padding: 6px var(--s-3) 6px var(--s-5);
    border-radius: var(--r-sm);
    color: var(--dust);
    font-size: 13px;
    text-align: left;
    transition: all var(--dur-1) var(--ease-out);
  }

  .cat:hover {
    background: var(--surface);
    color: var(--moonlight);
  }

  .cat[aria-pressed="true"] {
    background: var(--young-star-soft);
    color: var(--starlight);
    box-shadow: inset 2px 0 0 var(--young-star);
  }

  .cat__count {
    margin-left: auto;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--dust);
  }
  .cat[aria-pressed="true"] .cat__count {
    color: var(--young-star);
  }

  .side__divider {
    height: 1px;
    background: var(--edge-mute);
    margin: var(--s-3) var(--s-3) var(--s-4);
  }

  .side__title {
    padding: 0 var(--s-3);
    margin-bottom: var(--s-2);
    font-size: 10.5px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--dust);
  }

  .side__about {
    padding: 0 var(--s-3);
    font-size: 12px;
    line-height: 1.55;
    color: var(--dust);
  }

  .side__about strong {
    color: var(--moonlight);
    font-weight: 500;
  }

  /* ── Main pane: filter bar + results stream ────────────────────────────── */

  .main {
    display: flex;
    flex-direction: column;
  }

  /* Lensbar: curated views (editorial). Sits above the mechanical filters. */
  .lensbar {
    padding: var(--s-5) var(--s-5) var(--s-3);
    border-bottom: 1px solid var(--edge-mute);
    background: var(--void);
  }
  .lensbar__row {
    display: flex;
    align-items: center;
    gap: var(--s-1);
    flex-wrap: wrap;
  }
  .lensbar__caption {
    margin-top: var(--s-3);
    max-width: 64ch;
    font-family: var(--font-display);
    font-style: italic;
    font-size: 18px;
    line-height: 1.35;
    color: var(--moonlight);
    letter-spacing: -0.005em;
  }
  .lensbar__caption b {
    font-style: normal;
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0;
    color: var(--young-star);
    padding: 0 4px;
  }

  .lens {
    display: inline-flex;
    align-items: baseline;
    gap: var(--s-2);
    padding: 8px var(--s-3);
    border-radius: var(--r-sm);
    border: 1px solid transparent;
    color: var(--moonlight);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: -0.005em;
    cursor: pointer;
    transition: all var(--dur-1) var(--ease-out);
  }
  .lens:hover {
    color: var(--starlight);
    background: var(--surface);
  }
  .lens[aria-pressed="true"] {
    color: var(--starlight);
    background: var(--surface-2);
    border-color: var(--edge);
  }
  .lens__count {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 400;
    color: var(--dust);
  }
  .lens[aria-pressed="true"] .lens__count {
    color: var(--young-star);
  }

  .filterbar {
    display: flex;
    align-items: center;
    gap: var(--s-2);
    flex-wrap: wrap;
    padding: var(--s-3) var(--s-5);
    border-bottom: 1px solid var(--edge);
    background: var(--void);
    position: sticky;
    top: 0;
    z-index: 5;
  }

  .chip {
    display: inline-flex;
    align-items: center;
    gap: var(--s-1);
    height: 28px;
    padding: 0 var(--s-3);
    border-radius: var(--r-pill);
    border: 1px solid var(--edge);
    background: var(--surface);
    color: var(--moonlight);
    font-size: 12.5px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--dur-1) var(--ease-out);
    white-space: nowrap;
  }

  .chip:hover {
    background: var(--surface-2);
    border-color: var(--edge-strong);
    color: var(--starlight);
  }

  .chip[aria-pressed="true"] {
    background: var(--young-star-soft);
    border-color: var(--young-star);
    color: var(--young-star);
  }

  .chip__count {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--dust);
  }
  .chip[aria-pressed="true"] .chip__count {
    color: var(--young-star);
  }

  .chip__x {
    display: inline-flex;
    align-items: center;
    margin-left: var(--s-1);
    margin-right: -2px;
    opacity: 0.6;
  }
  .chip__x:hover {
    opacity: 1;
  }

  .filterbar__sep {
    width: 1px;
    height: 18px;
    background: var(--edge);
    margin: 0 var(--s-2);
  }

  .sort-group {
    display: inline-flex;
    align-items: center;
    gap: 1px;
    padding: 2px;
    background: var(--surface);
    border: 1px solid var(--edge);
    border-radius: var(--r-sm);
  }

  .sort-btn {
    padding: 4px var(--s-3);
    border-radius: var(--r-xs);
    font-size: 12px;
    font-weight: 500;
    color: var(--dust);
    transition: all var(--dur-1) var(--ease-out);
  }

  .sort-btn:hover {
    color: var(--starlight);
  }
  .sort-btn[aria-pressed="true"] {
    background: var(--surface-3);
    color: var(--starlight);
  }

  .filterbar__count {
    margin-left: auto;
    font-family: var(--font-mono);
    font-size: 11.5px;
    color: var(--dust);
    letter-spacing: 0.02em;
  }

  /* ── Results stream ────────────────────────────────────────────────────── */

  .stream {
    padding: var(--s-3) var(--s-3) var(--s-7);
  }

  .constellation {
    margin-top: var(--s-5);
    contain: content;
  }
  .constellation:first-child {
    margin-top: var(--s-3);
  }

  .constellation__head {
    display: flex;
    align-items: baseline;
    gap: var(--s-3);
    padding: var(--s-2) var(--s-3) var(--s-3);
    margin-bottom: var(--s-1);
  }

  .constellation__sec {
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--dust);
  }

  .constellation__name {
    font-size: 17px;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--starlight);
  }

  .constellation__count {
    font-family: var(--font-mono);
    font-size: 11.5px;
    color: var(--dust);
  }

  .constellation__desc {
    padding: 0 var(--s-3) var(--s-3);
    font-size: 12.5px;
    line-height: 1.55;
    color: var(--dust);
    max-width: 68ch;
  }

  /* The row — the most-repeated element on the page.
   Single-line on wide, two-line on narrow.
   8 columns: marker | name | tagline | tags | spark | stars | trend | age */
  .row {
    display: grid;
    grid-template-columns:
      28px
      minmax(140px, 1.4fr)
      minmax(0, 2fr)
      minmax(80px, 1fr)
      52px
      52px
      48px
      44px;
    align-items: center;
    gap: var(--s-3);
    padding: 10px var(--s-3);
    border-radius: var(--r-sm);
    cursor: pointer;
    transition: background var(--dur-1) var(--ease-out);
    border: 1px solid transparent;
  }

  .row + .row {
    border-top-color: var(--edge-mute);
  }
  .row:hover {
    background: var(--surface);
    border-color: var(--edge);
  }
  .row:hover + .row {
    border-top-color: transparent;
  }

  .row[data-archived="true"] {
    opacity: 0.55;
  }
  .row[data-archived="true"]:hover {
    opacity: 0.9;
  }

  .row__marker {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    flex-shrink: 0;
  }

  /* ── Avatar (the signature: identity, not math) ───────────────────────
   GitHub org logo for repo entries; initial-letter chip for papers.
   A thin colored ring encodes magnitude tier — quiet data accent. */
  .avatar {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--surface);
    border: 1px solid var(--edge);
    overflow: hidden;
    flex-shrink: 0;
  }

  .avatar__img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    background: var(--surface-2);
  }

  /* Letter sits behind the img and shows through if img fails. */
  .avatar__letter {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 500;
    color: var(--moonlight);
    text-transform: uppercase;
    letter-spacing: 0;
  }

  /* Magnitude ring — subtle data accent. Brighter ring = brighter star. */
  .avatar[data-mag="5"] {
    box-shadow:
      0 0 0 1.5px var(--mag-5),
      0 0 10px -2px oklch(from var(--mag-5) l c h / 0.4);
    border-color: transparent;
  }
  .avatar[data-mag="4"] {
    box-shadow: 0 0 0 1px var(--mag-4);
    border-color: transparent;
  }
  .avatar[data-mag="3"] {
    box-shadow: 0 0 0 1px oklch(from var(--mag-3) l c h / 0.6);
    border-color: transparent;
  }
  .avatar[data-mag="2"] {
    /* default border */
  }
  .avatar[data-mag="paper"] {
    border-radius: 6px;
    background: oklch(from var(--mag-paper) l c h / 0.15);
    border-color: oklch(from var(--mag-paper) l c h / 0.45);
  }
  .avatar[data-mag="paper"] .avatar__letter {
    color: var(--mag-paper);
  }
  .avatar[data-mag="extinct"] {
    opacity: 0.45;
  }
  .avatar[data-mag="extinct"] .avatar__img {
    filter: grayscale(1) brightness(0.7);
  }

  /* "Hot" cue — a quiet pulse around the brightest-trend rows.
   Trend is shown loudly by the sparkline; this is just a brand wink. */
  .avatar[data-trend="hot"]::after {
    content: "";
    position: absolute;
    inset: -3px;
    border-radius: inherit;
    border: 1px solid var(--life);
    animation: hot-pulse 2.8s var(--ease-out) infinite;
    pointer-events: none;
  }
  @keyframes hot-pulse {
    0% {
      transform: scale(0.92);
      opacity: 0.55;
    }
    100% {
      transform: scale(1.25);
      opacity: 0;
    }
  }
  @media (prefers-reduced-motion: reduce) {
    .avatar[data-trend="hot"]::after {
      animation: none;
    }
  }

  /* ── Row content ──────────────────────────────────────────────────────── */

  .row__name {
    font-size: 13.5px;
    font-weight: 600;
    color: var(--starlight);
    letter-spacing: -0.005em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .row__name .vendor {
    margin-left: var(--s-2);
    font-weight: 400;
    font-size: 11px;
    color: var(--dust);
    font-family: var(--font-mono);
    letter-spacing: 0;
  }

  .row__name .badge {
    display: inline-block;
    margin-left: var(--s-2);
    padding: 1px 5px;
    border-radius: 3px;
    font-family: var(--font-mono);
    font-size: 9.5px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    font-weight: 500;
  }
  .row__name .badge--commercial {
    background: var(--copper-soft);
    color: var(--copper);
  }
  .row__name .badge--archived {
    background: oklch(0.42 0.015 40 / 0.18);
    color: var(--mag-extinct);
  }
  .row__name .badge--paper {
    background: oklch(0.62 0.06 80 / 0.15);
    color: var(--mag-paper);
  }

  .row__tagline {
    font-size: 12.5px;
    color: var(--moonlight);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .row__tags {
    display: flex;
    gap: 3px;
    justify-content: flex-start;
    flex-wrap: nowrap;
    overflow: hidden;
    /* Tags overflow on the trailing edge (left-to-right reading), with a soft
     fade — the cut is deliberate, never a half-readable first chip. */
    mask-image: linear-gradient(to right, black 78%, transparent 100%);
    -webkit-mask-image: linear-gradient(to right, black 78%, transparent 100%);
  }

  .tag {
    font-family: var(--font-mono);
    font-size: 10.5px;
    padding: 1px 6px;
    border-radius: 3px;
    background: var(--surface-2);
    color: var(--dust);
    white-space: nowrap;
    letter-spacing: 0;
  }
  .row__tags .tag {
    flex-shrink: 0;
  }

  .row__metric {
    font-family: var(--font-mono);
    font-size: 11.5px;
    font-variant-numeric: tabular-nums;
    color: var(--moonlight);
    white-space: nowrap;
    text-align: right;
    min-width: 48px;
  }

  .row__metric--stars {
    color: var(--moonlight);
  }
  .row__metric--stars::before {
    content: "★ ";
    color: var(--mag-4);
    font-family: var(--font-ui);
  }

  .row__metric--trend {
    min-width: 56px;
  }
  .row__metric--trend.up {
    color: var(--life);
  }
  .row__metric--trend.up::before {
    content: "▲ ";
    font-size: 9px;
  }
  .row__metric--trend.down {
    color: var(--red-giant);
  }
  .row__metric--trend.down::before {
    content: "▼ ";
    font-size: 9px;
  }
  .row__metric--trend.na {
    color: var(--shadow-ink);
  }
  .row__metric--trend.na::before {
    content: "·";
    color: var(--shadow-ink);
  }

  .row__metric--age {
    color: var(--dust);
    min-width: 44px;
  }

  /* Light curve — sparkline of synthesized 30-day star trajectory. */
  .row__spark {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 18px;
  }
  .spark {
    display: block;
    overflow: visible;
  }
  .spark__line {
    fill: none;
    stroke-width: 1.3;
    stroke-linecap: round;
    stroke-linejoin: round;
  }
  .spark__area {
    fill: var(--spark-fill);
    opacity: 0.18;
  }
  .spark__dot {
    fill: var(--spark-stroke);
  }

  /* External-link micro-cue */
  .row__ext {
    display: inline-flex;
    align-items: center;
    color: var(--shadow-ink);
    transition: color var(--dur-1) var(--ease-out);
    margin-left: var(--s-1);
  }
  .row__ext svg {
    width: 12px;
    height: 12px;
  }
  .row:hover .row__ext {
    color: var(--young-star);
  }

  /* ── Detail sheet (slides from right; modal on narrow) ─────────────────── */

  .sheet {
    position: fixed;
    top: 0;
    right: 0;
    width: var(--sheet-w);
    max-width: 100vw;
    height: 100dvh;
    background: var(--void-2);
    border-left: 1px solid var(--edge);
    z-index: 50;
    transform: translateX(100%);
    transition: transform var(--dur-3) var(--ease-out);
    display: flex;
    flex-direction: column;
    overflow: hidden;
  }

  .sheet[data-open="true"] {
    transform: translateX(0);
  }

  .sheet__head {
    display: flex;
    align-items: center;
    gap: var(--s-3);
    padding: var(--s-4) var(--s-5);
    border-bottom: 1px solid var(--edge);
  }

  .sheet__title {
    font-size: 17px;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--starlight);
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--s-2);
  }

  .sheet__close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: var(--r-sm);
    color: var(--moonlight);
  }
  .sheet__close:hover {
    background: var(--surface-2);
    color: var(--starlight);
  }
  .sheet__close svg {
    width: 16px;
    height: 16px;
  }

  .sheet__body {
    flex: 1;
    overflow-y: auto;
    padding: var(--s-5);
  }

  .sheet__tagline {
    font-size: 14px;
    color: var(--moonlight);
    margin-bottom: var(--s-4);
    line-height: 1.55;
  }

  .sheet__desc {
    font-size: 13.5px;
    line-height: 1.65;
    color: var(--starlight);
    margin-bottom: var(--s-5);
  }

  .sheet__statusbar {
    font-family: var(--font-mono);
    font-size: 11.5px;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: var(--s-2) var(--s-3);
    margin-bottom: var(--s-3);
    background: var(--surface);
    border-radius: 0 var(--r-sm) var(--r-sm) 0;
  }

  .sheet__stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--s-1) var(--s-3);
    padding: var(--s-4);
    border: 1px solid var(--edge);
    border-radius: var(--r-md);
    background: var(--surface);
    margin-bottom: var(--s-5);
  }

  .stat__label {
    font-size: 10.5px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--dust);
    margin-top: var(--s-2);
  }
  .stat__label:first-child,
  .stat__label:nth-child(2) {
    margin-top: 0;
  }

  .stat__val {
    font-family: var(--font-mono);
    font-size: 13.5px;
    font-variant-numeric: tabular-nums;
    color: var(--starlight);
  }

  .stat__val--trend.up {
    color: var(--life);
  }
  .stat__val--trend.down {
    color: var(--red-giant);
  }

  .sheet__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--s-1);
    margin-bottom: var(--s-5);
  }

  .sheet__tags .tag {
    font-size: 11px;
    padding: 3px 8px;
  }

  .sheet__cta {
    display: inline-flex;
    align-items: center;
    gap: var(--s-2);
    padding: 10px var(--s-4);
    border-radius: var(--r-sm);
    background: var(--young-star);
    color: var(--void);
    font-size: 13px;
    font-weight: 600;
    transition: filter var(--dur-1) var(--ease-out);
  }
  .sheet__cta:hover {
    filter: brightness(1.1);
    border-bottom-color: transparent;
  }
  .sheet__cta svg {
    width: 14px;
    height: 14px;
  }

  .sheet__cat {
    margin-top: var(--s-5);
    padding-top: var(--s-4);
    border-top: 1px solid var(--edge);
    font-size: 12px;
    color: var(--dust);
  }
  .sheet__cat b {
    color: var(--moonlight);
    font-weight: 500;
  }

  .scrim {
    position: fixed;
    inset: 0;
    background: oklch(0 0 0 / 0.45);
    backdrop-filter: blur(4px);
    z-index: 40;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--dur-2) var(--ease-out);
  }
  .scrim[data-open="true"] {
    opacity: 1;
    pointer-events: auto;
  }

  /* ── Command palette ──────────────────────────────────────────────────── */

  .cmdk {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%) scale(0.97);
    width: min(640px, calc(100vw - 32px));
    max-height: min(520px, calc(100vh - 120px));
    background: var(--surface-3);
    border: 1px solid var(--edge-strong);
    border-radius: var(--r-lg);
    box-shadow:
      0 1px 0 0 oklch(1 0 0 / 0.04) inset,
      0 20px 60px -10px oklch(0 0 0 / 0.5),
      0 30px 80px -20px oklch(0 0 0 / 0.4);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    z-index: 100;
    opacity: 0;
    pointer-events: none;
    transition:
      opacity var(--dur-2) var(--ease-out),
      transform var(--dur-2) var(--ease-out);
  }
  .cmdk[data-open="true"] {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(-50%) scale(1);
  }

  .cmdk__input {
    width: 100%;
    padding: var(--s-4) var(--s-5);
    font-size: 15px;
    color: var(--starlight);
    border-bottom: 1px solid var(--edge);
  }
  .cmdk__input::placeholder {
    color: var(--dust);
  }

  .cmdk__list {
    flex: 1;
    overflow-y: auto;
    padding: var(--s-2);
  }

  .cmdk__group-label {
    padding: var(--s-3) var(--s-3) var(--s-1);
    font-size: 10.5px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--dust);
  }

  .cmdk__item {
    display: flex;
    align-items: center;
    gap: var(--s-3);
    width: 100%;
    padding: var(--s-2) var(--s-3);
    border-radius: var(--r-sm);
    font-size: 13px;
    color: var(--moonlight);
    cursor: pointer;
    text-align: left;
  }
  .cmdk__item:hover,
  .cmdk__item[data-active="true"] {
    background: var(--surface-2);
    color: var(--starlight);
  }

  .cmdk__item-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .cmdk__item-meta {
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--dust);
    flex-shrink: 0;
  }

  .cmdk__empty {
    padding: var(--s-6) var(--s-5);
    text-align: center;
    color: var(--dust);
    font-size: 13px;
  }

  .cmdk__foot {
    display: flex;
    align-items: center;
    gap: var(--s-4);
    padding: var(--s-2) var(--s-4);
    border-top: 1px solid var(--edge);
    background: var(--surface);
    font-size: 11px;
    color: var(--dust);
  }
  .cmdk__foot kbd {
    display: inline-flex;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 10px;
    padding: 1px 5px;
    border-radius: var(--r-xs);
    background: var(--void);
    border: 1px solid var(--edge-mute);
    margin-right: 4px;
  }

  /* ── Loading + empty states ────────────────────────────────────────────── */

  .empty {
    text-align: center;
    padding: var(--s-8) var(--s-5);
    color: var(--dust);
  }
  .empty__title {
    font-family: var(--font-display);
    font-size: 22px;
    font-style: italic;
    color: var(--moonlight);
    margin-bottom: var(--s-2);
  }
  .empty__hint {
    font-size: 13px;
  }

  .loading-skeleton {
    height: 48px;
    margin: 4px var(--s-3);
    border-radius: var(--r-sm);
    background: linear-gradient(90deg, var(--surface) 0%, var(--surface-2) 50%, var(--surface) 100%);
    background-size: 200% 100%;
    animation: shimmer 1.6s linear infinite;
  }
  @keyframes shimmer {
    to {
      background-position: -200% 0;
    }
  }
} /* end @layer components */

@layer utilities {
  /* ── Mobile / narrow ───────────────────────────────────────────────────── */

  .menu-trigger {
    display: none;
  }

  @media (max-width: 900px) {
    .app {
      grid-template-columns: 1fr;
      grid-template-areas:
        "topbar"
        "main";
    }

    .side {
      position: fixed;
      top: var(--topbar-h);
      left: 0;
      width: min(320px, 86vw);
      height: calc(100dvh - var(--topbar-h));
      background: var(--void);
      z-index: 30;
      transform: translateX(-100%);
      transition: transform var(--dur-2) var(--ease-out);
    }
    .side[data-open="true"] {
      transform: translateX(0);
    }

    .menu-trigger {
      display: inline-flex;
    }
    .brand__sub {
      display: none;
    }
    /* Collapse cmdk-trigger to icon-only on mobile to avoid topbar crowding. */
    .cmdk-trigger {
      min-width: 0;
      width: 32px;
      padding: 0;
      justify-content: center;
      flex: 0 0 auto;
    }
    .cmdk-trigger > span:not(.cmdk-trigger__hint) {
      display: none;
    }
    .cmdk-trigger__hint {
      display: none;
    }

    .row {
      grid-template-columns: 24px minmax(0, 1fr) auto auto auto;
      grid-template-areas:
        "marker name    spark stars trend"
        ".      tagline tagline tagline tagline";
      gap: 2px var(--s-3);
      padding: var(--s-3) var(--s-3) 12px;
    }
    .row__marker {
      grid-area: marker;
      align-self: start;
      padding-top: 2px;
    }
    .row__name {
      grid-area: name;
    }
    .row__spark {
      grid-area: spark;
    }
    .row__tagline {
      grid-area: tagline;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      line-clamp: 2;
      overflow: hidden;
      white-space: normal;
      font-size: 12.5px;
      line-height: 1.45;
      color: var(--moonlight);
      margin-top: 2px;
    }
    .row__tags {
      display: none;
    }
    .row__metric--stars {
      grid-area: stars;
    }
    .row__metric--trend {
      grid-area: trend;
    }
    .row__metric--age {
      display: none;
    }
    .row__ext {
      display: none;
    }

    .lensbar {
      padding: var(--s-4) var(--s-3) var(--s-2);
    }
    .lensbar__caption {
      font-size: 15px;
    }
    .lens {
      padding: 6px 10px;
      font-size: 13px;
    }

    .sheet {
      width: 100vw;
    }

    .filterbar {
      padding: var(--s-3);
      gap: var(--s-1);
    }
  }

  @media (max-width: 600px) {
    .filterbar__count {
      display: none;
    }
    .topbar {
      padding: 0 var(--s-3);
    }
    .brand__mark {
      font-size: 18px;
    }
    .cmdk-trigger {
      height: 30px;
      font-size: 12px;
    }
  }

  /* ── View Transitions API ──────────────────────────────────────────────── */

  @view-transition {
    navigation: auto;
  }

  ::view-transition-old(root),
  ::view-transition-new(root) {
    animation-duration: var(--dur-2);
    animation-timing-function: var(--ease-out);
  }
} /* end @layer utilities */

@layer print {
  /* ── Print ─────────────────────────────────────────────────────────────── */

  @media print {
    body {
      background: white;
      color: black;
    }
    .topbar,
    .side,
    .filterbar,
    .sheet,
    .scrim,
    .cmdk {
      display: none;
    }
    .main {
      overflow: visible;
    }
  }
} /* end @layer print */