/* Hallmark · genre: atmospheric · system: design.md (Observatory) · shared chrome for every page · nav: N10 · footer: Ft5 · designed-as-app
 * theme: custom · vibe: "observatory void, bone light, ember signal" · paper: oklch(13% 0.008 65) · accent: oklch(72% 0.14 50)
 * display: Geist 200 · body: Geist 400 · mono: Geist Mono · axes: dark / geometric-sans / warm
 * motion: load reveal · scroll-linked orbit + drift (≥40rem) · readout crossfade · studied: no · context: user + inferred
 */
/* Hallmark · pre-emit critique: P5 H4 E4 S5 R4 V5 · gates: see .hallmark/log.json */

/* Self-hosted faces (SIL OFL 1.1 — assets/fonts/OFL-*.txt). No third-party font requests. */
@font-face { font-family: "Geist"; src: url("assets/fonts/geist-latin-ext.woff2") format("woff2"); font-weight: 100 900; font-style: normal; font-display: swap; unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Geist"; src: url("assets/fonts/geist-latin.woff2") format("woff2"); font-weight: 100 900; font-style: normal; font-display: swap; unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Geist Mono"; src: url("assets/fonts/geist-mono-latin-ext.woff2") format("woff2"); font-weight: 100 900; font-style: normal; font-display: swap; unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Geist Mono"; src: url("assets/fonts/geist-mono-latin.woff2") format("woff2"); font-weight: 100 900; font-style: normal; font-display: swap; unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }

@property --spin { syntax: "<angle>"; inherits: true; initial-value: 0deg; }


/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { overflow-x: clip; scroll-behavior: smooth; scroll-padding-top: 80px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  overflow-x: clip;
  background: var(--color-paper);
  color: var(--color-ink);
  font: 400 var(--text-base)/1.6 var(--font-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body::after {
  /* film grain — tactile depth, < 0.06 opacity */
  content: "";
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  pointer-events: none;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
img, picture, svg { display: block; max-width: 100%; }
img { height: auto; } /* keep aspect when an image's width/height attributes meet a narrower box */
h1, h2, h3, p, ul, ol, figure { margin: 0; }
h1, h2, h3 { overflow-wrap: anywhere; min-width: 0; }
a:active { color: var(--color-accent); }
ul[role="list"], ol[role="list"] { list-style: none; padding: 0; }
a { color: inherit; }
::selection { background: var(--color-accent); color: var(--color-accent-ink); }
:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 3px; border-radius: 4px; }

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: -100px;
  z-index: var(--z-modal);
  padding: var(--space-xs) var(--space-md);
  background: var(--color-ink);
  color: var(--color-paper);
  border-radius: var(--radius-pill);
  font-weight: 500;
  text-decoration: none;
}
.skip-link:focus-visible { top: var(--space-sm); }

.glyph { width: 100%; height: 100%; fill: none; stroke: currentColor; stroke-width: 1.25; overflow: visible; }

.button {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  min-height: 48px;
  padding: 0 1.4em;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-pill);
  color: var(--color-ink);
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color var(--dur-short) var(--ease-out), color var(--dur-short) var(--ease-out), transform var(--dur-micro) var(--ease-out);
}
.button:active { transform: translateY(1px); }
.button--solid { background: var(--color-accent); color: var(--color-accent-ink); }
@media (hover: hover) {
  .button:hover { background: var(--color-accent); color: var(--color-accent-ink); }
  .button--solid:hover { background: var(--color-ink); border-color: var(--color-ink); }
}
.text-link {
  color: var(--color-ink-2);
  text-decoration: underline;
  text-decoration-color: var(--color-rule);
  text-underline-offset: 0.3em;
  white-space: nowrap;
  transition: color var(--dur-short) var(--ease-out), text-decoration-color var(--dur-short) var(--ease-out);
}
.text-link:hover { color: var(--color-ink); text-decoration-color: var(--color-accent); }

/* ---------- N10 · floating-on-scroll morph ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  padding-block: 0;
  background-color: var(--color-veil);
  border-block-end: 1px solid var(--color-rule-2);
  -webkit-backdrop-filter: saturate(1.3) blur(14px);
  backdrop-filter: saturate(1.3) blur(14px);
  transition: padding-block var(--dur-morph) var(--ease-out), background-color var(--dur-morph) var(--ease-out),
    border-color var(--dur-morph) var(--ease-out), backdrop-filter var(--dur-morph) var(--ease-out);
}
.nav__inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-md);
  max-width: calc(var(--page-max) + 2 * var(--gutter));
  min-height: 60px;
  margin-inline: auto;
  padding: 12px var(--gutter);
  border-radius: 0;
  background-color: transparent;
  -webkit-backdrop-filter: blur(0);
  backdrop-filter: blur(0);
  box-shadow: none;
  transform: translateY(0);
  transition: max-width var(--dur-morph) var(--ease-out), min-height var(--dur-morph) var(--ease-out),
    padding var(--dur-morph) var(--ease-out), border-radius var(--dur-morph) var(--ease-out),
    background-color var(--dur-morph) var(--ease-out), backdrop-filter var(--dur-morph) var(--ease-out),
    box-shadow var(--dur-morph) var(--ease-out), transform var(--dur-morph) var(--ease-out);
}
.nav.is-floating {
  padding-block: 4px;
  background-color: transparent;
  border-color: transparent;
  -webkit-backdrop-filter: blur(0);
  backdrop-filter: blur(0);
}
.nav.is-floating .nav__inner {
  max-width: 60rem;
  min-height: 52px;
  padding-block: 4px;
  padding-inline: var(--space-xs);
  border-radius: var(--radius-pill);
  background-color: var(--color-veil-2);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  box-shadow: inset 0 0 0 1px var(--color-rule), 0 18px 40px -18px var(--color-shadow);
  transform: translateY(10px);
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding-inline: var(--space-2xs) 0;
  color: var(--color-ink);
  text-decoration: none;
  font: 500 0.82rem/1 var(--font-mono);
  letter-spacing: 0.32em;
  white-space: nowrap;
}
.wordmark img { width: 20px; height: auto; }
.nav__links {
  display: none;
  margin-inline-start: auto;
  gap: var(--space-2xs);
}
.nav__links a {
  padding: 0.55rem 0.85rem;
  border-radius: var(--radius-pill);
  color: var(--color-ink-2);
  text-decoration: none;
  font-size: var(--text-sm);
  white-space: nowrap;
  transition: color var(--dur-short) var(--ease-out), background-color var(--dur-short) var(--ease-out);
}
.nav__links a:hover { color: var(--color-ink); background-color: var(--color-paper-3); }
.nav__sheet-cta { color: var(--color-accent) !important; }
.nav__cta {
  display: none;
  align-items: center;
  min-height: 40px;
  padding: 0 1.1rem;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-pill);
  color: var(--color-ink);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color var(--dur-short) var(--ease-out), color var(--dur-short) var(--ease-out);
}
.nav__cta:hover { background: var(--color-accent); color: var(--color-accent-ink); }
.nav__menu {
  margin-inline-start: auto;
  min-height: 44px;
  min-width: 44px;
  padding: 0 1rem;
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-ink);
  font: 500 var(--text-sm)/1 var(--font-body);
  cursor: pointer;
}
.nav__menu[aria-expanded="true"] { border-color: var(--color-accent); }
.nav__menu:active { transform: translateY(1px); }
.nav__menu:disabled { opacity: 0.45; cursor: not-allowed; }
/* mobile sheet */
.nav .nav__links {
  position: absolute;
  inset-inline: var(--gutter);
  top: calc(100% + 8px);
  display: grid;
  padding: var(--space-xs);
  background: var(--color-paper-2);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-card);
  box-shadow: 0 24px 48px -24px var(--color-shadow);
  visibility: hidden;
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity var(--dur-short) var(--ease-out), transform var(--dur-short) var(--ease-out), visibility 0s linear var(--dur-short);
}
.nav .nav__links a { padding: 0.9rem 1rem; font-size: var(--text-md); }
.nav.is-open .nav__links { visibility: visible; opacity: 1; transform: none; transition-delay: 0s; }

@media (min-width: 40rem) {
  .nav__cta { display: inline-flex; margin-inline-start: auto; }
  .nav__menu { margin-inline-start: 0; }
}
@media (min-width: 62rem) {
  .nav__menu, .nav__sheet-cta { display: none; }
  .nav .nav__links {
    position: static;
    display: flex;
    padding: 0;
    background: none;
    border: 0;
    box-shadow: none;
    visibility: visible;
    opacity: 1;
    transform: none;
  }
  .nav .nav__links a { padding: 0.55rem 0.85rem; font-size: var(--text-sm); }
  .nav__cta { margin-inline-start: var(--space-xs); }
}

/* ---------- Ft5 · statement footer ---------- */
.foot { display: grid; gap: var(--space-xl); padding: var(--space-2xl) var(--page-pad) var(--space-xl); border-top: 1px solid var(--color-rule); }
.foot__line { max-width: 22ch; font: 200 clamp(1.75rem, 3.6vw, 3rem)/1.05 var(--font-display); letter-spacing: -0.03em; }
.foot__meta { display: grid; gap: var(--space-lg); padding-top: var(--space-md); border-top: 1px solid var(--color-rule-2); }
.foot__links { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-xs) var(--space-lg); }
.foot__links a { color: var(--color-ink-2); font-size: var(--text-sm); text-decoration: none; white-space: nowrap; }
.foot__links a:hover { color: var(--color-accent); }
.foot__legal { color: var(--color-muted); font: 400 var(--text-xs)/1.4 var(--font-mono); }
@media (min-width: 62rem) {
  .foot__meta { grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; column-gap: var(--space-xl); }
  .foot__links { justify-content: center; }
}

/* ---------- motion: one orchestrated load ---------- */
[data-load] { animation: rise var(--dur-long) var(--ease-out) both; animation-delay: calc(var(--d, 0) * 90ms + 100ms); }
[data-load="1"] { --d: 1; }
[data-load="2"] { --d: 2; }
[data-load="3"] { --d: 3; }
[data-load="4"] { --d: 4; }
@keyframes rise { from { opacity: 0; transform: translateY(14px); } }
@keyframes settle { from { opacity: 0; transform: scale(0.965); } }
@keyframes fade { from { opacity: 0; } }
[data-load].dossier__symbol, .stage[data-load] { animation-name: settle; animation-duration: 900ms; }

/* cross-document view transitions: the symbol you leave through becomes the next page's hero symbol */
@view-transition { navigation: auto; }
::view-transition-group(zs-symbol) { animation-duration: 520ms; animation-timing-function: var(--ease-out); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 150ms !important; animation-delay: 0ms !important; animation-iteration-count: 1 !important; transition-duration: 150ms !important; scroll-behavior: auto !important; }
  [data-load] { animation-name: fade !important; }
  ::view-transition-group(*), ::view-transition-old(*), ::view-transition-new(*) { animation: none !important; }
}