@layer reset, base, layout, components, motion;

/* Patina palette. The bare values are the dark-mode fallback for browsers
   without light-dark(); the @supports block below adds the light mode. */
:root {
  --bg: #071014;
  --surface: #0b171c;
  --surface-hover: #102630;
  --fg: #eef8fa;
  --muted: #b7cdd4;
  --line: rgb(34 211 238 / 18%);
  --accent: #22d3ee;
  --accent-strong: #67e8f9;
  --accent-ink: #04222a;
  --shadow: 0 18px 44px rgb(0 0 0 / 35%);
  --accent-soft: color-mix(in oklab, var(--accent) 12%, transparent);
  --dot: color-mix(in oklab, var(--accent) 8%, transparent);
  --radius: 1rem;
  --radius-pill: 999px;
  --font-display: "Outfit", "Segoe UI", sans-serif;
  --font-body: "Manrope", "Segoe UI", sans-serif;
  --space: clamp(1.15rem, 3vw, 2rem);
  --max: 68rem;
  --header-h: 3.75rem;
  --nav-h: 3rem;

  color-scheme: light dark;
}

@supports (color: light-dark(#000, #fff)) {
  :root {
    --bg: light-dark(#eef4f6, #071014);
    --surface: light-dark(#fff, #0b171c);
    --surface-hover: light-dark(#f7fbfc, #102630);
    --fg: light-dark(#102830, #eef8fa);
    --muted: light-dark(#3a5560, #b7cdd4);
    --line: light-dark(#c5d4d8, rgb(34 211 238 / 18%));
    --accent: light-dark(#0b6f88, #22d3ee);
    --accent-strong: light-dark(#085568, #67e8f9);
    --accent-ink: light-dark(#fff, #04222a);
    --shadow: light-dark(0 12px 30px rgb(16 40 48 / 8%), 0 18px 44px rgb(0 0 0 / 35%));
  }
}

:root[data-theme="light"] {
  color-scheme: light;
}

:root[data-theme="dark"] {
  color-scheme: dark;
}

@layer reset {
  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    margin: 0;
    min-height: 100dvh;
  }

  svg {
    display: block;
  }

  a {
    color: inherit;
  }

  ol,
  ul {
    list-style: none;
    margin: 0;
    padding: 0;
  }

  button {
    font: inherit;
    color: inherit;
  }
}

@layer base {
  body {
    color: var(--fg);
    font-family: var(--font-body);
    font-size: 1.02rem;
    line-height: 1.55;
    background-color: var(--bg);
    background-image:
      radial-gradient(circle, var(--dot) 1px, transparent 1.5px),
      radial-gradient(ellipse 80% 50% at 15% -5%, var(--accent-soft), transparent 60%);
    background-size: 22px 22px, 100% 100%;
    background-attachment: fixed;
  }

  h1,
  h2,
  h3 {
    font-family: var(--font-display);
    line-height: 1.14;
    text-wrap: balance;
  }

  p {
    text-wrap: pretty;
  }

  :focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 4px;
  }

  .visually-hidden {
    position: absolute;
    inline-size: 1px;
    block-size: 1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
  }

  .sprite {
    position: absolute;
    inline-size: 0;
    block-size: 0;
  }

  .icon {
    inline-size: 1.15em;
    block-size: 1.15em;
    flex: none;
    fill: none;
    stroke: currentcolor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
  }
}

@layer layout {
  .skip-link {
    position: absolute;
    inset-inline-start: 1rem;
    inset-block-start: 1rem;
    z-index: 100;
    padding: 0.5rem 0.85rem;
    border-radius: 0.5rem;
    background: var(--accent);
    color: var(--accent-ink);
    font-weight: 700;
    text-decoration: none;
    transform: translateY(-150%);
  }

  .skip-link:focus {
    transform: translateY(0);
  }

  .site-header {
    position: sticky;
    inset-block-start: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-block-size: var(--header-h);
    inline-size: 100%;
    max-inline-size: var(--max);
    margin-inline: auto;
    padding-inline: var(--space);
    backdrop-filter: blur(12px);
    background: color-mix(in oklab, var(--bg) 82%, transparent);
    border-block-end: 1px solid var(--line);
  }

  .brand {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: -0.02em;
    color: var(--fg);
    min-inline-size: 0;
  }

  .brand:hover {
    color: var(--accent);
  }

  .brand-name {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.95rem;
  }

  .nav {
    position: sticky;
    inset-block-start: var(--header-h);
    z-index: 49;
    display: flex;
    gap: 0.35rem;
    align-items: center;
    min-block-size: var(--nav-h);
    inline-size: 100%;
    max-inline-size: var(--max);
    margin-inline: auto;
    padding-inline: var(--space);
    overflow-x: auto;
    scrollbar-width: none;
    backdrop-filter: blur(12px);
    background: color-mix(in oklab, var(--bg) 82%, transparent);
    border-block-end: 1px solid var(--line);
  }

  .nav::-webkit-scrollbar {
    display: none;
  }

  .nav a {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.4rem 0.7rem;
    border-radius: var(--radius-pill);
    color: var(--muted);
    font-size: 0.88rem;
    font-weight: 600;
    text-decoration: none;
    white-space: nowrap;
  }

  .nav a:hover,
  .nav a[aria-current="true"] {
    background: var(--accent-soft);
    color: var(--accent);
  }

  .nav a[aria-current="true"] {
    box-shadow: inset 0 0 0 1px color-mix(in oklab, var(--accent) 35%, transparent);
  }

  main {
    max-inline-size: var(--max);
    margin-inline: auto;
    padding: 0 var(--space) 3rem;
  }

  .hero {
    display: grid;
    gap: 1.65rem;
    padding-block: clamp(2.25rem, 7vw, 4.25rem) 2.5rem;
    scroll-margin-block-start: calc(var(--header-h) + var(--nav-h) + 1rem);
  }

  .eyebrow {
    margin: 0 0 0.9rem;
    color: var(--accent);
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
  }

  .hero h1 {
    margin: 0 0 1rem;
    font-size: clamp(2.15rem, 5.5vw, 3.35rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    max-inline-size: 18ch;
  }

  .lede {
    margin: 0;
    color: var(--muted);
    max-inline-size: 44ch;
  }

  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.7rem;
    margin-block-start: 1.6rem;
  }

  .section {
    padding-block: 2.25rem 0.75rem;
    scroll-margin-block-start: calc(var(--header-h) + var(--nav-h) + 1rem);
  }

  .section-head {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    justify-content: space-between;
    gap: 0.6rem 1.5rem;
    margin-block-end: 1.25rem;
  }

  .section h2 {
    margin: 0;
    font-size: clamp(1.6rem, 3.2vw, 2.1rem);
    font-weight: 700;
    letter-spacing: -0.02em;
  }

  .section-link {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    text-decoration: none;
    color: var(--muted);
  }

  .section-link:not(.muted):hover {
    color: var(--accent);
  }

  .card-grid {
    display: grid;
    gap: 0.9rem;
  }

  .site-footer {
    max-inline-size: var(--max);
    margin-inline: auto;
    padding: 1.75rem var(--space) 2.5rem;
    color: var(--muted);
    font-size: 0.88rem;
    border-block-start: 1px solid var(--line);
  }

  .site-footer p {
    margin: 0;
  }

  @media (width >= 720px) {
    .card-grid {
      grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .card-grid-tight {
      grid-template-columns: repeat(4, minmax(0, 1fr));
    }
  }

  @media (width >= 960px) {
    .hero {
      grid-template-columns: minmax(0, 1.2fr) minmax(17rem, 0.8fr);
      gap: 2.25rem;
    }
  }
}

@layer components {
  .theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-inline-size: 2.5rem;
    min-block-size: 2.5rem;
    padding: 0;
    border: 1px solid var(--line);
    border-radius: var(--radius-pill);
    background: transparent;
    color: var(--muted);
    cursor: pointer;
  }

  .theme-toggle:hover {
    border-color: var(--accent);
    color: var(--accent);
  }

  .theme-toggle .icon {
    inline-size: 1.1rem;
    block-size: 1.1rem;
  }

  .theme-icon {
    display: none;
  }

  :root:not([data-theme]) .theme-icon-auto,
  :root[data-theme="light"] .theme-icon-light,
  :root[data-theme="dark"] .theme-icon-dark {
    display: block;
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    min-block-size: 2.75rem;
    padding: 0.65rem 1.2rem;
    border-radius: var(--radius-pill);
    border: 1px solid transparent;
    font-size: 0.94rem;
    font-weight: 700;
    text-decoration: none;
    transition:
      background-color 160ms ease,
      border-color 160ms ease,
      color 160ms ease;
  }

  .btn-primary {
    background: var(--accent);
    color: var(--accent-ink);
  }

  .btn-primary:hover {
    background: var(--accent-strong);
  }

  .btn-ghost {
    border-color: var(--line);
    color: var(--fg);
  }

  .btn-ghost:hover {
    border-color: var(--accent);
    color: var(--accent);
  }

  .focus-panel,
  .panel {
    padding: 1.3rem 1.35rem;
    border: 1px solid var(--line);
    border-radius: calc(var(--radius) + 0.15rem);
    background: var(--surface);
    box-shadow: var(--shadow);
  }

  .panel .lede + .lede {
    margin-block-start: 0.85rem;
  }

  .focus-panel {
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
  }

  .focus-label {
    margin: 0;
    color: var(--accent);
    font-family: var(--font-body);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
  }

  .focus-list li {
    display: grid;
    grid-template-columns: 2rem 1fr;
    gap: 0.6rem;
    align-items: start;
    padding-block: 0.8rem;
    font-weight: 600;
    font-size: 0.95rem;
  }

  .focus-list li:not(:where(:last-child)) {
    border-block-end: 1px solid var(--line);
  }

  .focus-num {
    color: var(--accent);
    font-family: var(--font-display);
    font-weight: 700;
    font-variant-numeric: tabular-nums;
  }

  .focus-note {
    margin: 0;
    color: var(--muted);
    font-size: 0.84rem;
  }

  .tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-block-start: 1.1rem;
  }

  .tag-row li {
    padding: 0.3rem 0.75rem;
    border-radius: var(--radius-pill);
    border: 1px solid var(--line);
    background: var(--accent-soft);
    color: var(--muted);
    font-size: 0.78rem;
    font-weight: 600;
  }

  .card {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    block-size: 100%;
    padding: 1.15rem 1.15rem 1.05rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    text-decoration: none;
    transition:
      background-color 180ms ease,
      border-color 180ms ease,
      transform 180ms ease;
  }

  .card:hover {
    background: var(--surface-hover);
    border-color: var(--accent);
    transform: translateY(-2px);
  }

  .card-kicker {
    margin: 0;
    color: var(--accent);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
  }

  .card-title {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -0.015em;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
    overflow: hidden;
  }

  .card-body {
    margin: 0;
    color: var(--muted);
    font-size: 0.92rem;
    flex: 1;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 4;
    overflow: hidden;
  }

  .card-compact {
    gap: 0.3rem;
  }

  .card-tag {
    align-self: start;
    margin-block-start: 0.6rem;
    padding: 0.25rem 0.65rem;
    border-radius: var(--radius-pill);
    border: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.73rem;
    font-weight: 600;
  }

  .stats-page {
    display: flex;
    flex-direction: column;
    min-block-size: 100dvh;
  }

  .stats-page main.stats {
    max-inline-size: none;
    margin-inline: 0;
    padding: 0;
    inline-size: 100%;
  }

  .stats {
    display: flex;
    flex: 1;
    flex-direction: column;
    min-block-size: 0;
  }

  .stats-tabs-bar {
    border-block-end: 1px solid var(--line);
    background: color-mix(in oklab, var(--bg) 88%, transparent);
  }

  .stats-tabs-inner {
    max-inline-size: var(--max);
    margin-inline: auto;
    padding: 1rem var(--space);
  }

  .stats-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .stats-tab {
    appearance: none;
    margin: 0;
    border: 1px solid var(--line);
    border-radius: var(--radius-pill);
    background: transparent;
    color: var(--fg);
    padding: 0.45rem 0.95rem;
    font: inherit;
    font-size: 0.92rem;
    font-weight: 600;
    cursor: pointer;
  }

  .stats-tab:hover {
    border-color: var(--accent);
    color: var(--accent);
  }

  .stats-tab.is-active {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--accent-ink);
  }

  .stats-panel {
    flex: 0 0 auto;
    max-inline-size: var(--max);
    inline-size: 100%;
    margin-inline: auto;
    margin-block: 1.25rem 2rem;
    padding-inline: var(--space);
  }

  .stats-panel[hidden] {
    display: none;
  }

  .stats-frame {
    display: block;
    inline-size: 100%;

    /* Looker embeds are cross-origin — height cannot follow report content. */
    block-size: 50rem;
    border: 0;
    border-radius: var(--radius);
    background: var(--surface);
  }
}

@layer motion {
  @media (prefers-reduced-motion: no-preference) {
    .hero-copy,
    .focus-panel {
      animation: fade-up 600ms ease both;
    }

    .focus-panel {
      animation-delay: 80ms;
    }

    .card {
      animation: fade-up 650ms ease both;
      animation-timeline: view();
      animation-range: entry 0% cover 26%;
    }

    @keyframes fade-up {
      from {
        opacity: 0;
        translate: 0 0.8rem;
      }

      to {
        opacity: 1;
        translate: 0 0;
      }
    }
  }

  @media (prefers-reduced-motion: reduce) {
    html {
      scroll-behavior: auto;
    }

    .btn,
    .card,
    .theme-toggle {
      transition: none;
    }
  }
}