/* ==========================================================================
   Dangodeck — stylesheet
   Organized with native CSS cascade layers. Declaration order = priority order.
   --------------------------------------------------------------------------
   tokens      design tokens (color, spacing scale, type, layout)
   base        element resets & primitives
   layout      structural scaffolding (app shell, container, page rhythm)
   components  reusable UI (buttons, cards, inputs, tags, header, footer…)
   pages       page-specific composition (hero, browser, detail, docs, about)
   utilities   single-purpose helpers
   responsive  breakpoint overrides (mobile-first)
   motion      animation, transitions, view transitions, reduced-motion
   ========================================================================== */
@layer tokens, base, layout, components, pages, utilities, responsive, motion;

/* ==========================================================================
   tokens
   ========================================================================== */
@layer tokens {
  :root {
    /* Brand palette (neo-brutalist) */
    --background: #fafaf7;
    --foreground: #16161a;
    --muted: #6b6b70;
    --card: #ffffff;
    --nb-border: #16161a;
    --nb-shadow: #16161a;
    --line: #e4e4e0;
    --accent: #ff9ec4;
    --accent-fg: #1a1a1a;

    /* Spacing scale (4px base) */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
    --space-16: 64px;
    --space-20: 80px;
    --space-24: 96px;

    /* Borders, radii & signature hard shadows */
    --border: 2px solid var(--nb-border);
    --nb-shadow-sm: 2px 2px 0 0 var(--nb-shadow);
    --nb-shadow-md: 3px 3px 0 0 var(--nb-shadow);
    --nb-shadow-lg: 4px 4px 0 0 var(--nb-shadow);

    /* Layout rhythm (overridden per breakpoint in `responsive`) */
    --container-max: 1120px;
    --container-pad: 16px;
    --section-y: var(--space-12);
    --page-top: var(--space-10);
    --grid-gap: var(--space-4);

    /* Fluid typography — scales smoothly instead of stepping at breakpoints */
    --fs-hero: clamp(34px, 7vw, 56px);
    --fs-page-title: clamp(26px, 4.5vw, 38px);
    --fs-section-title: clamp(20px, 2.4vw, 26px);
    --fs-detail-name: clamp(26px, 4.5vw, 40px);
    --fs-lead: clamp(15px, 1.6vw, 18px);

    /* Control sizing */
    --control-h: 40px;

    /* Sticky header offset (used for scroll-margin / sticky tops) */
    --header-h: 65px;
  }
}

/* ==========================================================================
   base
   ========================================================================== */
@layer base {
  * {
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
  }

  body {
    margin: 0;
    background: var(--background);
    color: var(--foreground);
    font-family: 'Space Grotesk', system-ui, sans-serif;
    -webkit-font-smoothing: antialiased;
    line-height: 1.5;
    overflow-wrap: break-word;
  }

  a {
    color: inherit;
    text-decoration: none;
  }

  h1,
  h2,
  h3,
  h4 {
    margin: 0;
    letter-spacing: -0.02em;
    text-wrap: balance;
  }

  p {
    margin: 0;
  }

  img {
    display: block;
    max-width: 100%;
  }

  button {
    font-family: inherit;
  }

  ::-webkit-scrollbar {
    width: 10px;
    height: 10px;
  }
  ::-webkit-scrollbar-thumb {
    background: var(--nb-border);
  }
}

/* ==========================================================================
   layout
   ========================================================================== */
@layer layout {
  .app {
    display: flex;
    min-height: 100vh;
    min-height: 100dvh;
    flex-direction: column;
  }

  .site-main {
    flex: 1;
  }

  .container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding-inline: var(--container-pad);
  }

  /* Standard page wrapper — gives every non-landing page the same comfortable
     top breathing room and bottom rhythm as the landing page. */
  .page {
    padding-top: var(--page-top);
    padding-bottom: var(--section-y);
  }

  /* Consistent page header rhythm (title → lead) used across pages. */
  .page-header {
    margin-bottom: var(--space-8);
  }
  .page-eyebrow {
    margin-bottom: var(--space-4);
  }
  .page-lead {
    margin-top: var(--space-3);
    max-width: 62ch;
    font-size: var(--fs-lead);
  }

  /* In-page sections (also used on the landing page). */
  .section {
    padding: var(--section-y) 0;
  }
  .section-lead {
    margin-top: var(--space-2);
  }
}

/* ==========================================================================
   components
   ========================================================================== */
@layer components {
  .mono {
    font-family: 'JetBrains Mono', ui-monospace, monospace;
  }

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

  /* Card surface */
  .nb-card {
    border: var(--border);
    background: var(--card);
    box-shadow: var(--nb-shadow-md);
  }

  /* Buttons */
  .nb-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    min-height: var(--control-h);
    border: var(--border);
    background: var(--card);
    color: var(--foreground);
    padding: var(--space-2) var(--space-4);
    font: inherit;
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--nb-shadow-md);
    transition:
      transform 0.08s ease,
      box-shadow 0.08s ease;
  }
  .nb-btn:hover {
    transform: translate(-1px, -1px);
    box-shadow: var(--nb-shadow-lg);
  }
  .nb-btn:active {
    transform: translate(2px, 2px);
    box-shadow: var(--nb-shadow-sm);
  }
  .nb-btn-accent {
    background: var(--accent);
    color: var(--accent-fg);
  }
  .icon-btn {
    width: var(--control-h);
    height: var(--control-h);
    padding: 0;
    flex: 0 0 auto;
  }

  /* Inputs */
  .nb-input {
    width: 100%;
    min-height: var(--control-h);
    border: var(--border);
    background: transparent;
    color: var(--foreground);
    padding: var(--space-2) var(--space-3);
    font: inherit;
    outline: none;
  }
  .nb-input:focus {
    box-shadow: var(--nb-shadow-md);
  }

  /* Tags */
  .nb-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    border: var(--border);
    padding: 2px var(--space-2);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
  }
  .tag-accent {
    background: var(--accent);
    color: var(--accent-fg);
  }

  /* Chips (stat calculator) */
  .nb-chip {
    border: var(--border);
    background: var(--card);
    color: var(--foreground);
    padding: var(--space-1) var(--space-3);
    font: inherit;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition:
      transform 0.08s ease,
      box-shadow 0.08s ease;
  }
  .nb-chip:hover {
    transform: translate(-1px, -1px);
    box-shadow: var(--nb-shadow-sm);
  }
  .nb-chip.is-active {
    background: var(--accent);
    color: var(--accent-fg);
    box-shadow: var(--nb-shadow-sm);
  }

  /* Header / nav */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    border-bottom: var(--border);
    background: var(--background);
  }
  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: var(--space-3) var(--container-pad);
  }
  .brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-family: 'JetBrains Mono', monospace;
    font-size: 18px;
    font-weight: 700;
  }
  .brand-mark {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    flex: 0 0 auto;
    border: var(--border);
    background: var(--accent);
    color: var(--accent-fg);
  }
  .nav-desktop {
    display: flex;
    align-items: center;
    gap: var(--space-2);
  }
  .nav-link {
    border: 2px solid transparent;
    padding: var(--space-2) var(--space-3);
    font-weight: 600;
  }
  .nav-link.is-active {
    border-color: var(--nb-border);
  }
  .nav-toggle {
    display: none;
  }
  .nav-mobile {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    border-top: var(--border);
    padding: var(--space-3) var(--container-pad);
  }
  .nav-mobile[hidden] {
    display: none;
  }
  .nav-link-mobile {
    border: var(--border);
    padding: var(--space-2) var(--space-3);
    font-weight: 600;
  }
  .nav-link-mobile.is-active {
    background: var(--accent);
    color: var(--accent-fg);
  }

  /* Footer */
  .site-footer {
    margin-top: var(--space-20);
    border-top: var(--border);
  }
  .footer-grid {
    display: grid;
    gap: var(--space-8);
    padding: var(--space-10) var(--container-pad);
    grid-template-columns: 1fr;
  }
  .footer-about {
    margin-top: var(--space-3);
    font-size: 14px;
    max-width: 320px;
  }
  .footer-head {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
  }
  .footer-list {
    list-style: none;
    margin: var(--space-3) 0 0;
    padding: 0;
    font-size: 14px;
  }
  .footer-list li {
    margin-bottom: var(--space-1);
  }
  .footer-list a:hover {
    text-decoration: underline;
  }
  .footer-bottom {
    border-top: var(--border);
    padding: var(--space-4);
    text-align: center;
    font-size: 12px;
  }

  /* Shared titles */
  .section-title {
    font-size: var(--fs-section-title);
    font-weight: 800;
  }
  .page-title {
    font-size: var(--fs-page-title);
    font-weight: 800;
  }

  /* Card tile (used on landing, catalog, related; mirrored by cards.js) */
  .card-grid {
    display: grid;
    gap: var(--grid-gap);
    margin-top: var(--space-5);
    grid-template-columns: repeat(2, 1fr);
  }
  .card-tile {
    border: var(--border);
    background: var(--card);
    box-shadow: var(--nb-shadow-md);
    overflow: hidden;
    transition: transform 0.1s ease;
  }
  .card-tile:hover {
    transform: translate(-2px, -2px);
  }
  .card-thumb {
    position: relative;
    aspect-ratio: 3 / 4;
    border-bottom: var(--border);
    background: var(--line);
    overflow: hidden;
  }
  .card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .tile-element {
    position: absolute;
    left: var(--space-2);
    top: var(--space-2);
    max-width: calc(100% - var(--space-4));
    overflow: hidden;
  }
  .tile-new {
    position: absolute;
    right: var(--space-2);
    top: var(--space-2);
    background: var(--accent);
    color: var(--accent-fg);
  }
  .card-body {
    padding: var(--space-3);
  }
  .card-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
  }
  .card-name {
    font-size: 15px;
    font-weight: 700;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .card-id {
    font-size: 12px;
    flex: 0 0 auto;
  }
  .card-anime {
    font-size: 13px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .card-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-1);
    margin-top: var(--space-2);
  }
  .stat-chip {
    border: var(--border);
    padding: 2px 1px;
    text-align: center;
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    font-weight: 700;
  }

  /* Empty / loading / sentinel */
  .empty-state {
    margin-top: var(--space-6);
    padding: var(--space-8);
    text-align: center;
  }
  .empty-title {
    font-weight: 700;
  }
  .loader {
    margin-top: var(--space-8);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    color: var(--muted);
  }
  .sentinel {
    height: var(--space-8);
  }
  .end-note {
    margin-top: var(--space-6);
    text-align: center;
    font-size: 14px;
  }
}

/* ==========================================================================
   pages
   ========================================================================== */
@layer pages {
  /* ---- Landing / hero ---- */
  .hero {
    display: grid;
    gap: var(--space-8);
    align-items: center;
    padding: var(--space-12) 0;
    grid-template-columns: 1fr;
  }
  .hero-title {
    margin-top: var(--space-4);
    font-size: var(--fs-hero);
    font-weight: 800;
    line-height: 1.05;
  }
  .hero-lead {
    margin-top: var(--space-4);
    max-width: 460px;
    font-size: var(--fs-lead);
  }
  .hero-actions {
    margin-top: var(--space-6);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
  }
  .stat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
  }
  .stat-card {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding: var(--space-4);
  }
  .stat-value {
    font-size: clamp(24px, 3.5vw, 30px);
    font-weight: 800;
  }
  .stat-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
  }

  /* ---- Featured endpoints (landing) ---- */
  .endpoint-grid {
    display: grid;
    gap: var(--space-3);
    margin-top: var(--space-5);
    grid-template-columns: 1fr;
  }
  .endpoint-row {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4);
  }
  .endpoint-meta {
    min-width: 0;
  }
  .endpoint-path {
    display: block;
    font-size: 14px;
    font-weight: 700;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .endpoint-desc {
    font-size: 12px;
  }
  .section-cta {
    margin-top: var(--space-6);
  }

  /* ---- Card browser (catalog) ---- */
  .browser {
    margin-top: var(--space-6);
  }
  .browser-controls {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
  }
  .search-wrap {
    position: relative;
    flex: 1;
  }
  .search-icon {
    position: absolute;
    left: var(--space-3);
    top: 50%;
    transform: translateY(-50%);
    color: var(--muted);
    display: flex;
  }
  .search-input {
    padding-left: 36px;
  }
  .search-clear {
    position: absolute;
    right: var(--space-2);
    top: 50%;
    transform: translateY(-50%);
    border: none;
    background: none;
    cursor: pointer;
    color: var(--foreground);
    padding: var(--space-1);
  }
  .filter-dot {
    width: var(--space-2);
    height: var(--space-2);
    border-radius: 50%;
    background: var(--accent);
  }
  .filter-panel {
    margin-top: var(--space-3);
    padding: var(--space-4);
    display: grid;
    gap: var(--space-4);
    grid-template-columns: 1fr;
  }
  .field {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    font-size: 14px;
    font-weight: 700;
  }
  .result-count {
    margin-top: var(--space-4);
    font-size: 14px;
  }
  .catalog-grid {
    margin-top: var(--space-4);
  }

  /* ---- Card detail ---- */
  .back-btn {
    margin-bottom: var(--space-6);
  }
  .detail-grid {
    display: grid;
    gap: var(--space-8);
    grid-template-columns: 1fr;
  }
  .detail-image {
    overflow: hidden;
    align-self: start;
  }
  .detail-thumb {
    aspect-ratio: 3 / 4;
    border-bottom: var(--border);
    background: var(--line);
  }
  .detail-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .detail-image-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    padding: var(--space-3);
  }
  .detail-name {
    font-size: var(--fs-detail-name);
    font-weight: 800;
  }
  .detail-anime {
    margin-top: var(--space-1);
    font-size: 18px;
  }
  .detail-patch {
    margin-top: var(--space-3);
  }
  .detail-block {
    margin-top: var(--space-5);
    padding: var(--space-5);
  }
  .block-head {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--muted);
  }
  .block-head-row {
    display: flex;
    align-items: center;
    gap: var(--space-2);
  }
  .stat-bars {
    margin-top: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
  }
  .stat-bar-row {
    display: flex;
    align-items: center;
    gap: var(--space-3);
  }
  .stat-bar-label {
    flex: 0 0 auto;
    min-width: 40px;
    font-size: 14px;
    font-weight: 700;
  }
  .stat-bar-track {
    flex: 1 1 auto;
    min-width: 0;
    height: 16px;
    border: var(--border);
    background: var(--line);
  }
  .stat-bar-fill {
    height: 100%;
  }
  .stat-bar-value {
    flex: 0 0 auto;
    min-width: 40px;
    text-align: right;
    font-size: 14px;
    font-weight: 700;
  }
  .stat-bar-base {
    flex: 0 0 auto;
    min-width: 56px;
    text-align: right;
    font-size: 12px;
  }
  .talent-name {
    margin-top: var(--space-2);
    font-size: 18px;
    font-weight: 700;
  }
  .talent-desc {
    margin-top: var(--space-2);
  }
  .stat-mult-badge {
    margin-left: auto;
    padding: 2px var(--space-2);
    border: var(--border);
    background: var(--accent);
    color: var(--accent-fg);
    font-size: 13px;
    font-weight: 700;
  }
  .stat-calc {
    margin-top: var(--space-5);
    padding-top: var(--space-4);
    border-top: 2px dashed var(--line);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
  }
  .stat-calc-row {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
  }
  .stat-calc-label {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--muted);
  }
  .stat-calc-label strong {
    color: var(--foreground);
  }
  .stat-calc-chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
  }
  .stat-calc-slider {
    width: 100%;
    height: var(--space-6);
    accent-color: var(--accent);
    cursor: pointer;
  }
  .stat-calc-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-top: var(--space-1);
  }

  /* ---- Docs ---- */
  .docs-layout {
    display: grid;
    gap: var(--space-8);
    grid-template-columns: 1fr;
  }
  .docs-sidebar {
    align-self: start;
  }
  .docs-side-title {
    font-size: 18px;
    font-weight: 800;
  }
  .docs-nav {
    margin-top: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
    font-size: 14px;
  }
  .docs-nav-label {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--muted);
  }
  .docs-nav ul {
    list-style: none;
    margin: var(--space-2) 0 0;
    padding: 0;
  }
  .docs-nav li a {
    display: block;
    border-left: 2px solid transparent;
    padding: 2px 0 2px var(--space-2);
    font-size: 13px;
  }
  .docs-nav li a:hover {
    border-left-color: var(--nb-border);
    font-weight: 700;
  }
  .docs-swagger {
    width: 100%;
    font-size: 13px;
  }
  .docs-content {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-12);
  }
  .docs-header .page-lead,
  .docs-header > .text-muted {
    margin-top: var(--space-3);
    max-width: 70ch;
    font-size: var(--fs-lead);
  }
  .docs-section {
    scroll-margin-top: var(--space-20);
  }
  .docs-section > .text-muted,
  .docs-section > .section-title + .text-muted {
    margin-top: var(--space-2);
    max-width: 70ch;
  }
  .code-static {
    margin-top: var(--space-3);
    padding: var(--space-4);
    font-weight: 700;
    overflow-x: auto;
  }
  .code-static pre {
    margin: 0;
    font-weight: 400;
  }
  .endpoint-title-row {
    display: flex;
    align-items: center;
    gap: var(--space-3);
  }
  .endpoint-fullpath {
    display: block;
    margin-top: var(--space-2);
    font-size: 14px;
    font-weight: 700;
    overflow-wrap: anywhere;
  }
  .endpoint-section > .text-muted {
    margin-top: var(--space-2);
  }
  .table-wrap {
    margin-top: var(--space-4);
    overflow-x: auto;
  }
  .param-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 14px;
  }
  .param-table th {
    border-bottom: var(--border);
    padding: var(--space-3);
    font-weight: 700;
  }
  .param-table td {
    border-bottom: 1px solid var(--line);
    padding: var(--space-3);
  }
  .code-block {
    margin-top: var(--space-4);
    overflow: hidden;
  }
  .code-tabs {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-1);
    border-bottom: var(--border);
    padding: var(--space-2);
  }
  .code-tab {
    border: 2px solid transparent;
    background: none;
    font: inherit;
    font-size: 12px;
    font-weight: 700;
    padding: var(--space-1) var(--space-2);
    cursor: pointer;
    color: var(--foreground);
  }
  .code-tab.is-active {
    background: var(--accent);
    color: var(--accent-fg);
  }
  .code-copy {
    margin-left: auto;
    min-height: 32px;
    height: 32px;
    padding: 0 var(--space-2);
    font-size: 12px;
  }
  .code-pre {
    display: none;
    margin: 0;
    padding: var(--space-4);
    overflow-x: auto;
    font-size: 13px;
    line-height: 1.6;
  }
  .code-pre.is-active {
    display: block;
  }

  /* ---- About ---- */
  .about-grid {
    margin-top: var(--space-10);
    display: grid;
    gap: var(--space-5);
    grid-template-columns: 1fr;
  }
  .about-card {
    padding: var(--space-6);
  }
  .block-title {
    font-size: 20px;
    font-weight: 700;
  }
  .about-name {
    margin-top: var(--space-3);
    font-size: 18px;
    font-weight: 700;
  }
  .about-card .nb-btn {
    margin-top: var(--space-3);
  }
  .about-strong {
    margin-top: var(--space-3);
    font-weight: 700;
  }
  .about-text {
    margin-top: var(--space-10);
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    max-width: 72ch;
  }
  .about-text .text-muted {
    margin-top: var(--space-2);
  }
  .about-actions {
    margin-top: var(--space-4);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
  }

  /* ---- 404 / error ---- */
  .notfound {
    text-align: center;
    padding: var(--space-20) var(--container-pad);
  }
  .notfound .page-title {
    margin-top: var(--space-4);
  }
  .notfound .text-muted {
    margin-top: var(--space-2);
  }
  .notfound-actions {
    margin-top: var(--space-6);
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-3);
  }
}

/* ==========================================================================
   utilities
   ========================================================================== */
@layer utilities {
  .stack-sm > * + * {
    margin-top: var(--space-2);
  }
  .stack > * + * {
    margin-top: var(--space-4);
  }
  [hidden] {
    display: none !important;
  }
}

/* ==========================================================================
   responsive — mobile-first overrides
   Breakpoints: 480 (lg phone) · 640 (sm tablet) · 768 (tablet) ·
                1024 (laptop) · 1280 (desktop) · 1536 (wide / ultra-wide)
   ========================================================================== */
@layer responsive {
  /* Very small phones: tighten gutters & card chips so nothing overflows. */
  @media (max-width: 379px) {
    :root {
      --container-pad: 12px;
      --grid-gap: var(--space-2);
    }
    .stat-chip {
      font-size: 9px;
    }
    .card-body {
      padding: var(--space-2);
    }
  }

  @media (min-width: 480px) {
    .notfound-actions,
    .hero-actions {
      gap: var(--space-3);
    }
  }

  @media (min-width: 640px) {
    .card-grid {
      grid-template-columns: repeat(3, 1fr);
    }
    .browser-controls {
      flex-direction: row;
      align-items: center;
    }
    .filter-panel {
      grid-template-columns: repeat(3, 1fr);
    }
    .clear-filters {
      grid-column: 1 / -1;
      justify-self: start;
    }
    .endpoint-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  @media (min-width: 768px) {
    :root {
      --container-pad: 24px;
      --section-y: var(--space-16);
      --page-top: var(--space-12);
    }
    .hero {
      grid-template-columns: 1fr 1fr;
      padding: var(--space-16) 0;
    }
    .footer-grid {
      grid-template-columns: repeat(3, 1fr);
    }
    .detail-grid {
      grid-template-columns: minmax(280px, 340px) 1fr;
    }
    .docs-layout {
      grid-template-columns: 220px 1fr;
    }
    .docs-sidebar {
      position: sticky;
      top: var(--space-20);
    }
    .about-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .featured-grid {
      grid-template-columns: repeat(5, 1fr);
    }
  }

  @media (min-width: 1024px) {
    .catalog-grid,
    .related-grid {
      grid-template-columns: repeat(4, 1fr);
    }
  }

  @media (min-width: 1280px) {
    :root {
      --container-pad: 32px;
    }
    .catalog-grid {
      grid-template-columns: repeat(6, 1fr);
    }
  }

  /* Wide / ultra-wide: widen the canvas and add one catalog column so the page
     isn't mostly empty gutter on large monitors. */
  @media (min-width: 1536px) {
    :root {
      --container-max: 1320px;
    }
    .catalog-grid {
      grid-template-columns: repeat(7, 1fr);
    }
  }

  /* Nav: desktop links vs. mobile drawer toggle. */
  @media (max-width: 767px) {
    .nav-desktop {
      display: none;
    }
    .nav-toggle {
      display: inline-flex;
    }
  }
  @media (min-width: 768px) {
    .nav-mobile {
      display: none !important;
    }
  }
}

/* ==========================================================================
   motion
   ========================================================================== */
@view-transition {
  navigation: auto;
}

@layer motion {
  ::view-transition-old(root) {
    animation: fade-out 0.18s ease both;
  }
  ::view-transition-new(root) {
    animation: fade-up 0.32s cubic-bezier(0.22, 1, 0.36, 1) both;
  }

  .hero-copy,
  .stat-card,
  .section,
  .endpoint-row,
  .detail-grid,
  .about-card,
  .docs-section,
  .notfound {
    animation: fade-up 0.5s cubic-bezier(0.22, 1, 0.36, 1) both;
  }

  .stat-card:nth-child(1) {
    animation-delay: 0.05s;
  }
  .stat-card:nth-child(2) {
    animation-delay: 0.12s;
  }
  .stat-card:nth-child(3) {
    animation-delay: 0.19s;
  }
  .section:nth-of-type(2) {
    animation-delay: 0.08s;
  }
  .section:nth-of-type(3) {
    animation-delay: 0.14s;
  }

  .card-tile {
    animation: fade-up 0.45s cubic-bezier(0.22, 1, 0.36, 1) both;
  }
  .card-grid .card-tile:nth-child(2) {
    animation-delay: 0.04s;
  }
  .card-grid .card-tile:nth-child(3) {
    animation-delay: 0.08s;
  }
  .card-grid .card-tile:nth-child(4) {
    animation-delay: 0.12s;
  }
  .card-grid .card-tile:nth-child(5) {
    animation-delay: 0.16s;
  }
  .card-grid .card-tile:nth-child(n + 6) {
    animation-delay: 0.2s;
  }

  .nav-link {
    transition:
      border-color 0.18s ease,
      transform 0.12s ease;
  }
  .nav-link:hover {
    transform: translateY(-1px);
    border-color: var(--line);
  }

  .card-thumb img {
    transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  }
  .card-tile:hover .card-thumb img {
    transform: scale(1.06);
  }

  .nav-mobile:not([hidden]) {
    animation: fade-up 0.25s ease both;
  }
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fade-out {
  to {
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  ::view-transition-old(root),
  ::view-transition-new(root) {
    animation: none !important;
    transition: none !important;
  }
}