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

@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body, h1, h2, h3, p, dl, dd, figure { margin: 0; }
  img { display: block; max-width: 100%; }
  button, input { font: inherit; }
}

@layer tokens {
  :root {
    color-scheme: dark light;
    --canvas: #0b0d10;
    --surface-primary: #12161c;
    --surface-secondary: #181d24;
    --surface-raised: #202630;
    --text-primary: #e7eaf0;
    --text-secondary: #a5adba;
    --text-muted: #7d8796;
    --signal-primary: #8ef0c0;
    --signal-primary-ink: #07130e;
    --signal-secondary: #7fb6ff;
    --state-success: #76d9a8;
    --state-warning: #f0c674;
    --state-error: #ff8585;
    --state-neutral: #98a1ae;
    --border-subtle: #2a313c;
    --focus: #ffd166;
    --shadow: 0 24px 70px rgb(0 0 0 / .22);
    --font-narrative: Inter, "Segoe UI", Arial, sans-serif;
    --font-interface: Inter, "Segoe UI", Arial, sans-serif;
    --font-system: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
    --space-1: .25rem;
    --space-2: .5rem;
    --space-3: .75rem;
    --space-4: 1rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-24: 6rem;
    --space-32: 8rem;
    --radius-sm: .35rem;
    --radius-md: .75rem;
    --max-width: 78rem;
    --reading-width: 68ch;
  }

  :root[data-theme="light"] {
    --canvas: #f6f8fb;
    --surface-primary: #fff;
    --surface-secondary: #eef1f5;
    --surface-raised: #e4e9f0;
    --text-primary: #11151b;
    --text-secondary: #596273;
    --text-muted: #6e7787;
    --signal-primary: #1e6b4b;
    --signal-primary-ink: #fff;
    --signal-secondary: #245ea8;
    --state-success: #17653f;
    --state-warning: #7a5100;
    --state-error: #a12b2b;
    --state-neutral: #596273;
    --border-subtle: #d5dae2;
    --focus: #7a4d00;
    --shadow: 0 24px 70px rgb(25 35 50 / .1);
  }

  @media (prefers-color-scheme: light) {
    :root:not([data-theme]) {
      --canvas: #f6f8fb;
      --surface-primary: #fff;
      --surface-secondary: #eef1f5;
      --surface-raised: #e4e9f0;
      --text-primary: #11151b;
      --text-secondary: #596273;
      --text-muted: #6e7787;
      --signal-primary: #1e6b4b;
      --signal-primary-ink: #fff;
      --signal-secondary: #245ea8;
      --state-success: #17653f;
      --state-warning: #7a5100;
      --state-error: #a12b2b;
      --state-neutral: #596273;
      --border-subtle: #d5dae2;
      --focus: #7a4d00;
      --shadow: 0 24px 70px rgb(25 35 50 / .1);
    }
  }
}

@layer base {
  body {
    min-width: 20rem;
    background: var(--canvas);
    color: var(--text-primary);
    font-family: var(--font-narrative);
    font-size: 1rem;
    line-height: 1.65;
    text-rendering: optimizeLegibility;
  }

  body::before {
    position: fixed;
    inset: 0;
    z-index: -1;
    background-image:
      linear-gradient(to right, color-mix(in srgb, var(--text-primary) 3%, transparent) 1px, transparent 1px),
      linear-gradient(to bottom, color-mix(in srgb, var(--text-primary) 3%, transparent) 1px, transparent 1px);
    background-size: 4rem 4rem;
    content: "";
    mask-image: linear-gradient(to bottom, black, transparent 72%);
    pointer-events: none;
  }

  a { color: var(--signal-secondary); text-underline-offset: .22em; }
  a:hover { text-decoration-thickness: .13em; }
  h1, h2, h3 { font-family: var(--font-interface); line-height: 1.08; letter-spacing: -.035em; }
  h1 { max-width: 15ch; font-size: clamp(2.75rem, 8vw, 5.6rem); font-weight: 620; }
  h2 { font-size: clamp(2rem, 5vw, 3.6rem); font-weight: 610; }
  h3 { font-size: 1.25rem; font-weight: 620; letter-spacing: -.015em; }
  p { max-width: var(--reading-width); color: var(--text-secondary); }
  ::selection { background: var(--signal-primary); color: var(--signal-primary-ink); }
  :focus-visible { outline: .2rem solid var(--focus); outline-offset: .25rem; }
}

@layer layout {
  .shell { width: min(calc(100% - 2rem), var(--max-width)); margin-inline: auto; }
  .site-header { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid var(--border-subtle); background: color-mix(in srgb, var(--canvas) 92%, transparent); backdrop-filter: blur(16px); }
  .header-inner { min-height: 4.75rem; display: flex; align-items: center; gap: var(--space-6); }
  .brand { display: inline-flex; min-width: 3.75rem; min-height: 3.5rem; align-items: center; justify-content: center; padding: .25rem .45rem; border: 1px solid var(--border-subtle); border-radius: var(--radius-sm); background: #f4f4f2; color: #0f0f0f; text-decoration: none; }
  .brand:hover { border-color: var(--signal-primary); }
  .brand-mark { width: 3rem; height: 3rem; object-fit: contain; }
  .site-nav { margin-left: auto; }
  .site-nav[hidden] { display: block; }
  .site-nav ul { display: flex; align-items: center; gap: .15rem; margin: 0; padding: 0; list-style: none; }
  .site-nav a { display: grid; min-height: 2.75rem; place-items: center; padding-inline: .78rem; border-radius: var(--radius-sm); color: var(--text-secondary); font-family: var(--font-interface); font-size: .875rem; font-weight: 600; text-decoration: none; }
  .site-nav a:hover { background: var(--surface-secondary); color: var(--text-primary); }
  .site-nav a[aria-current="page"] { color: var(--signal-primary); }
  .header-actions { display: flex; gap: var(--space-2); }
  .hero { min-height: min(48rem, calc(100svh - 4.75rem)); display: grid; align-items: center; padding-block: var(--space-24); }
  .hero-grid, .split { display: grid; grid-template-columns: minmax(0, 1.62fr) minmax(17rem, 1fr); gap: clamp(2.5rem, 8vw, 8rem); align-items: end; }
  .section { padding-block: var(--space-24); border-top: 1px solid var(--border-subtle); }
  .section-heading { display: grid; grid-template-columns: minmax(10rem, .62fr) minmax(0, 1fr); gap: var(--space-8); margin-bottom: var(--space-12); align-items: start; }
  .section-heading p { font-size: 1.125rem; }
  .object-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: var(--space-6); }
  .object-grid > * { grid-column: span 4; }
  .object-grid > .wide { grid-column: span 8; }
  .object-grid > .half { grid-column: span 6; }
  .object-grid > .full { grid-column: 1 / -1; }
  .publication-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-6); }
  .observation-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: var(--space-4); }
  .observation-grid figure { grid-column: span 4; }
  .observation-grid figure:nth-child(1), .observation-grid figure:nth-child(5) { grid-column: span 8; }
  .site-footer { padding-block: var(--space-12); border-top: 1px solid var(--border-subtle); }
  .footer-inner { display: flex; justify-content: space-between; gap: var(--space-8); align-items: end; }
}

@layer components {
  .skip-link { position: fixed; top: 1rem; left: 1rem; z-index: 100; transform: translateY(-200%); padding: .75rem 1rem; background: var(--signal-primary); color: var(--signal-primary-ink); font-weight: 700; }
  .skip-link:focus { transform: translateY(0); }
  .eyebrow, .system-label { color: var(--signal-primary); font-family: var(--font-system); font-size: .75rem; font-weight: 700; letter-spacing: .11em; text-transform: uppercase; }
  .lede { margin-top: var(--space-6); font-size: clamp(1.125rem, 2.5vw, 1.4rem); }
  .hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-8); }
  .button { display: inline-flex; min-height: 2.75rem; align-items: center; justify-content: center; gap: var(--space-2); padding: .65rem 1rem; border: 1px solid var(--border-subtle); border-radius: var(--radius-sm); background: var(--surface-primary); color: var(--text-primary); font-family: var(--font-interface); font-size: .875rem; font-weight: 700; text-decoration: none; cursor: pointer; }
  .button:hover { border-color: var(--signal-primary); }
  .button.primary { border-color: var(--signal-primary); background: var(--signal-primary); color: var(--signal-primary-ink); }
  .button.quiet { background: transparent; }
  .menu-button { display: none; }
  .status-panel { padding-left: var(--space-6); border-left: 1px solid var(--border-subtle); }
  .status-panel dl { margin-top: var(--space-4); }
  .status-row { display: grid; grid-template-columns: 7rem 1fr; gap: var(--space-4); padding-block: var(--space-3); border-bottom: 1px solid var(--border-subtle); }
  dt { color: var(--text-muted); font-family: var(--font-system); font-size: .75rem; letter-spacing: .08em; }
  dd { color: var(--text-primary); font-family: var(--font-system); font-size: .875rem; }
  .state { display: inline-flex; align-items: center; gap: .45rem; font-family: var(--font-system); font-size: .75rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
  .state::before { width: .5rem; height: .5rem; border-radius: 50%; background: currentColor; content: ""; }
  .state.active, .state.validated { color: var(--state-success); }
  .state.observation { color: var(--signal-secondary); }
  .state.developing { color: var(--state-warning); }
  .state.archived { color: var(--state-neutral); }
  .object-card { min-height: 20rem; display: flex; flex-direction: column; padding: var(--space-6); border-top: 1px solid var(--border-subtle); background: linear-gradient(145deg, color-mix(in srgb, var(--surface-primary) 82%, transparent), transparent); }
  .object-card:hover { border-color: var(--signal-primary); background-color: var(--surface-primary); }
  .object-type { display: flex; justify-content: space-between; gap: var(--space-4); margin-bottom: auto; }
  .object-card h3 { margin-top: var(--space-12); }
  .object-card p { margin-top: var(--space-3); font-size: .9375rem; }
  .object-meta { display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-4); margin-top: var(--space-6); color: var(--text-muted); font-family: var(--font-system); font-size: .75rem; }
  .text-link { display: inline-flex; align-items: center; gap: .4rem; margin-top: var(--space-6); color: var(--text-primary); font-family: var(--font-interface); font-size: .875rem; font-weight: 700; text-decoration: none; }
  .text-link::after { content: "↗"; color: var(--signal-primary); }
  .timeline { list-style: none; margin: 0; padding: 0; }
  .timeline li { display: grid; grid-template-columns: 9rem 1fr; gap: var(--space-8); padding-block: var(--space-6); border-top: 1px solid var(--border-subtle); }
  .timeline time { color: var(--text-muted); font-family: var(--font-system); font-size: .75rem; }
  .timeline strong { display: block; font-size: 1.125rem; }
  .timeline p { margin-top: var(--space-2); }
  .publication { display: grid; grid-template-columns: 8rem 1fr; gap: var(--space-6); min-height: 14rem; padding: var(--space-4); background: var(--surface-primary); border: 1px solid var(--border-subtle); border-radius: var(--radius-md); }
  .publication img { width: 100%; height: 100%; object-fit: cover; border-radius: var(--radius-sm); background: var(--surface-secondary); }
  .publication-body { display: flex; flex-direction: column; padding-block: var(--space-2); }
  .publication h3 { margin-block: var(--space-3); }
  .publication .text-link { margin-top: auto; }
  .figure { position: relative; overflow: hidden; min-height: 20rem; background: var(--surface-secondary); }
  .figure img { width: 100%; height: 100%; min-height: 20rem; object-fit: cover; transition: transform .35s ease; }
  .figure:hover img { transform: scale(1.015); }
  .figure figcaption { position: absolute; inset: auto 0 0; padding: var(--space-8) var(--space-4) var(--space-4); background: linear-gradient(transparent, rgb(0 0 0 / .85)); color: #fff; font-family: var(--font-system); font-size: .75rem; }
  .callout { padding: var(--space-8); border-left: .2rem solid var(--signal-primary); background: var(--surface-primary); }
  .callout p { margin-top: var(--space-3); }
  .metric-strip { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: var(--space-12); border-block: 1px solid var(--border-subtle); }
  .metric { padding: var(--space-6); border-right: 1px solid var(--border-subtle); }
  .metric:last-child { border-right: 0; }
  .metric strong { display: block; font-family: var(--font-system); font-size: 1.5rem; }
  .metric span { color: var(--text-muted); font-size: .75rem; text-transform: uppercase; letter-spacing: .08em; }
  .colophon { padding-block: var(--space-12); }
  .commitment { max-width: none; margin-top: var(--space-3); color: var(--text-primary); font-family: var(--font-narrative); font-size: clamp(1rem, 2vw, 1.2rem); letter-spacing: .01em; }
  .footer-id { color: var(--text-muted); font-family: var(--font-system); font-size: .75rem; }
  .footer-links { display: flex; flex-wrap: wrap; gap: var(--space-4); }
  .footer-links a { color: var(--text-secondary); font-size: .875rem; }
}

@layer utilities {
  .muted { color: var(--text-muted); }
  .reading { max-width: var(--reading-width); }
  .stack > * + * { margin-top: var(--space-4); }
  .visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
}

@media (max-width: 54rem) {
  .header-inner { flex-wrap: wrap; padding-block: var(--space-3); }
  .header-actions { margin-left: auto; }
  .menu-button { display: inline-flex; }
  .site-nav { order: 3; width: 100%; margin: 0; }
  .site-nav[hidden] { display: none; }
  .site-nav ul { display: grid; padding-block: var(--space-3); }
  .site-nav a { justify-content: start; }
  .hero-grid, .split, .section-heading { grid-template-columns: 1fr; gap: var(--space-8); }
  .hero { min-height: auto; padding-block: var(--space-16); }
  .status-panel { padding-left: 0; padding-top: var(--space-6); border-left: 0; border-top: 1px solid var(--border-subtle); }
  .object-grid > *, .object-grid > .wide { grid-column: span 6; }
  .publication-grid { grid-template-columns: 1fr; }
  .observation-grid figure, .observation-grid figure:nth-child(1), .observation-grid figure:nth-child(5) { grid-column: span 6; }
  .metric-strip { grid-template-columns: repeat(2, 1fr); }
  .metric:nth-child(2) { border-right: 0; }
  .footer-inner { align-items: start; flex-direction: column; }
}

@media (max-width: 38rem) {
  .shell { width: min(calc(100% - 1.5rem), var(--max-width)); }
  .brand { min-width: 3.35rem; min-height: 3.1rem; }
  .brand-mark { width: 2.65rem; height: 2.65rem; }
  .theme-word { display: none; }
  .section { padding-block: var(--space-16); }
  .object-grid > *, .object-grid > .wide, .observation-grid figure, .observation-grid figure:nth-child(1), .observation-grid figure:nth-child(5) { grid-column: 1 / -1; }
  .publication { grid-template-columns: 5.5rem 1fr; gap: var(--space-4); }
  .publication h3 { font-size: 1rem; }
  .timeline li { grid-template-columns: 1fr; gap: var(--space-2); }
  .metric { padding: var(--space-4); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}