/* davidrussell.tech — base: tokens, type, and the complete 2D page.
   The 3D layer (cosmic.css) only ever adds to this. */

/* ---------- fonts ---------- */
@font-face { font-family: "Instrument Serif"; font-style: normal; font-weight: 400; font-display: swap;
  src: url("../assets/fonts/instrument-serif-400-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2212, U+FEFF, U+FFFD; }
@font-face { font-family: "Instrument Serif"; font-style: normal; font-weight: 400; font-display: swap;
  src: url("../assets/fonts/instrument-serif-400-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+1E00-1E9F, U+20A0-20AB, U+2C60-2C7F; }
@font-face { font-family: "Instrument Serif"; font-style: italic; font-weight: 400; font-display: swap;
  src: url("../assets/fonts/instrument-serif-italic-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2212, U+FEFF, U+FFFD; }
@font-face { font-family: "Instrument Serif"; font-style: italic; font-weight: 400; font-display: swap;
  src: url("../assets/fonts/instrument-serif-italic-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+1E00-1E9F, U+20A0-20AB, U+2C60-2C7F; }
@font-face { font-family: "DM Sans"; font-style: normal; font-weight: 400; font-display: swap;
  src: url("../assets/fonts/dm-sans-400-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2212, U+FEFF, U+FFFD; }
@font-face { font-family: "DM Sans"; font-style: normal; font-weight: 400; font-display: swap;
  src: url("../assets/fonts/dm-sans-400-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+1E00-1E9F, U+20A0-20AB, U+2C60-2C7F; }
@font-face { font-family: "DM Sans"; font-style: normal; font-weight: 500; font-display: swap;
  src: url("../assets/fonts/dm-sans-500-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2212, U+FEFF, U+FFFD; }
@font-face { font-family: "DM Sans"; font-style: normal; font-weight: 500; font-display: swap;
  src: url("../assets/fonts/dm-sans-500-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+1E00-1E9F, U+20A0-20AB, U+2C60-2C7F; }

/* ---------- tokens ---------- */
/* A lithograph: warm black ink, paper white, graphite greys, and one ochre for the sun. */
:root {
  --ink: #08080a;
  --ink-2: #111114;
  --paper: #e9e3d5;
  --muted: #918d83;
  --line: rgba(233, 227, 213, 0.16);
  --accent: #f2b857;

  --display: "Instrument Serif", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --text: "DM Sans", system-ui, -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;

  --step-hero: clamp(3.5rem, 12vw, 11rem);
  --step-1: clamp(2.4rem, 5vw, 4.25rem);
  --step-2: clamp(1.5rem, 2.6vw, 2.1rem);
  --step-0: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --step-label: 0.72rem;

  --gutter: clamp(1.25rem, 4vw, 3.5rem);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  color-scheme: dark;
}

/* ---------- reset-ish ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 4.5rem; }
body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font: 400 var(--step-0)/1.6 var(--text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
/* CSS-only sky for the 2D page: a sun off the top-right corner and its orbits, engraved. */
body::before {
  content: "";
  position: fixed; inset: 0; z-index: -2;
  background:
    radial-gradient(circle at 86% 6%, rgba(242, 184, 87, 0.55) 0, rgba(242, 184, 87, 0.16) 5vmax, transparent 16vmax),
    repeating-radial-gradient(circle at 86% 6%, transparent 0 13vmax, rgba(233, 227, 213, 0.09) 13vmax calc(13vmax + 1px)),
    radial-gradient(1px 1px at 12% 22%, var(--paper) 50%, transparent 51%),
    radial-gradient(1px 1px at 31% 68%, var(--paper) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 56% 35%, var(--paper) 50%, transparent 51%),
    radial-gradient(1px 1px at 72% 81%, var(--paper) 50%, transparent 51%),
    radial-gradient(1px 1px at 43% 9%, var(--paper) 50%, transparent 51%),
    radial-gradient(1px 1px at 6% 57%, var(--paper) 50%, transparent 51%),
    radial-gradient(1px 1px at 94% 92%, var(--paper) 50%, transparent 51%),
    var(--ink);
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration-color: var(--accent); text-underline-offset: 0.2em; }
a:hover { color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
h1, h2, h3 { font-family: var(--display); font-weight: 400; line-height: 0.95; letter-spacing: -0.01em; margin: 0; text-wrap: balance; }
p { margin: 0 0 1em; max-width: 62ch; text-wrap: pretty; }
ul { margin: 0; padding: 0; list-style: none; }
[hidden] { display: none !important; }

.label {
  font: 500 var(--step-label)/1.2 var(--text);
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--muted); font-variant-numeric: tabular-nums;
}
.skip { position: absolute; left: -999px; top: 0; background: var(--accent); color: var(--ink); padding: 0.6em 1em; z-index: 100; }
.skip:focus { left: 0; }

.button {
  display: inline-flex; align-items: center; gap: 0.6em;
  font: 500 var(--step-label)/1 var(--text); letter-spacing: 0.18em; text-transform: uppercase; text-decoration: none;
  padding: 1.05em 1.5em; border: 1px solid var(--paper); color: var(--paper);
  transition: background 0.4s var(--ease-out), color 0.4s var(--ease-out);
}
.button:hover, .button--solid { background: var(--paper); color: var(--ink); }
.button--solid:hover { background: var(--accent); border-color: var(--accent); color: var(--ink); }

/* ---------- top bar ---------- */
.bar {
  position: fixed; inset: 0 0 auto 0; z-index: 20;
  display: flex; align-items: center; gap: 1.25rem;
  padding: 1rem var(--gutter);
  background: linear-gradient(to bottom, rgba(8, 8, 10, 0.88), rgba(8, 8, 10, 0));
}
.bar > * { white-space: nowrap; }
.bar__name { font-family: var(--display); font-size: 1.35rem; text-decoration: none; margin-right: auto; }
.bar a:not(.bar__name), .bar button {
  font: 500 var(--step-label)/1 var(--text); letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--paper); background: none; border: 0; padding: 0.6em 0; cursor: pointer; text-decoration: none;
}
.bar a:hover, .bar button:hover { color: var(--accent); }
@media (max-width: 560px) {
  .bar { gap: 0.9rem; }
  .bar a[href="#contact"] { display: none; }   /* still in the hero and at the end of the page */
  .bar a:not(.bar__name), .bar button { letter-spacing: 0.12em; }
}

/* ---------- hero ---------- */
.hero {
  min-height: 100vh; min-height: 100svh;
  display: grid; align-content: center;
  padding: 6rem var(--gutter) 3rem;
}
.hero__inner { display: grid; gap: 1.4rem; }
.hero h1 { font-size: var(--step-hero); letter-spacing: -0.025em; }
.hero__role { font: italic 400 var(--step-2)/1.15 var(--display); margin: 0; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 1.5rem; margin: 0; }
.telemetry { min-height: 1.2em; margin: 0; transition: opacity 0.8s var(--ease-out); }
.telemetry[data-state="done"], .telemetry[data-state="off"] { opacity: 0; min-height: 0; height: 0; }

/* the work, on the first screen: nobody has to travel to find out what was built */
.worklist { display: grid; grid-template-columns: repeat(3, minmax(0, 17rem)); gap: 1rem; margin-top: 0.75rem; }
.worklist a { display: grid; gap: 0.6rem; align-content: start; text-decoration: none; }
.worklist img {
  aspect-ratio: 16 / 9; width: 100%; object-fit: cover; object-position: top left;
  border: 1px solid var(--line); filter: grayscale(1) contrast(1.05); opacity: 0.85;
  transition: filter 0.5s var(--ease-out), opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out);
}
.worklist a:hover img, .worklist a:focus-visible img { filter: none; opacity: 1; transform: translateY(-3px); }
.worklist span { font: 400 1.25rem/1.1 var(--display); }
.worklist small { display: block; font: 500 var(--step-label)/1.4 var(--text); letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); margin-top: 0.3rem; }
@media (max-width: 640px) { .worklist { grid-template-columns: 1fr 1fr 1fr; gap: 0.6rem; } .worklist small { display: none; } .worklist span { font-size: 1rem; } }

/* ---------- stops (2D layout) ---------- */
.stop { padding: clamp(4rem, 12vh, 8rem) var(--gutter); border-top: 1px solid var(--line); }
.panel { max-width: 60rem; }
.panel h2 { font-size: var(--step-1); margin: 0 0 0.4em; }
.panel .lede { font-size: 1.12em; }

/* project plates: the screenshot leads, like a print with its caption underneath */
.plate { margin: 0 0 1.4rem; }
.plate a { display: block; border: 1px solid var(--line); background: var(--ink-2); padding: 0.5rem; }
.plate img { width: 100%; }
.plate figcaption { margin-top: 0.6rem; }
.chips { display: flex; flex-wrap: wrap; gap: 0.45rem; margin: 0 0 1.2rem; }
.chips li {
  font: 500 var(--step-label)/1 var(--text); letter-spacing: 0.12em; text-transform: uppercase;
  padding: 0.6em 0.85em; border: 1px solid var(--line); color: var(--paper);
}
.features { columns: 2; column-gap: 2rem; margin: 0 0 1.4rem; max-width: 46rem; }
.features li { break-inside: avoid; padding: 0.35em 0 0.35em 1.3em; position: relative; line-height: 1.4; }
.features li::before { content: ""; position: absolute; left: 0; top: 0.95em; width: 0.7em; height: 1px; background: var(--accent); }
@media (max-width: 640px) { .features { columns: 1; } }
.thumbs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0.6rem; max-width: 46rem; }
.thumbs a { border: 1px solid var(--line); background: var(--ink-2); padding: 0.25rem; transition: border-color 0.3s; }
.thumbs a:hover, .thumbs a:focus-visible { border-color: var(--accent); }
.thumbs img { aspect-ratio: 16 / 9; width: 100%; object-fit: cover; object-position: top left; }

/* wide 2D screens: print on the left, caption column on the right, so the whole project reads in one glance */
@media (min-width: 1000px) {
  html:not(.is-3d) .panel__sheet:has(> .plate) {
    display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); column-gap: clamp(2rem, 4vw, 4rem); align-items: start;
  }
  html:not(.is-3d) .panel__sheet:has(> .plate) > .plate { grid-column: 1; grid-row: 1 / span 8; margin: 0; }
  html:not(.is-3d) .panel__sheet:has(> .plate) > :not(.plate) { grid-column: 2; }
  html:not(.is-3d) .panel:has(.plate) { max-width: 84rem; }
  html:not(.is-3d) .features { columns: 1; }
}

/* about */
.about { display: grid; grid-template-columns: minmax(0, 15rem) minmax(0, 1fr); gap: clamp(1.25rem, 3vw, 2.5rem); align-items: start; }
.about img { border: 1px solid var(--line); padding: 0.4rem; background: var(--ink-2); filter: grayscale(1) contrast(1.05); }
@media (max-width: 640px) { .about { grid-template-columns: 1fr; } .about img { max-width: 11rem; } }
.links { display: flex; flex-wrap: wrap; gap: 0.5rem 1.4rem; margin-top: 1.2rem; }
.links a { font: 500 var(--step-label)/1 var(--text); letter-spacing: 0.18em; text-transform: uppercase; padding: 0.4em 0; }

.services { max-width: 40rem; margin-top: 1.5rem; }
.services li {
  font: 400 var(--step-2)/1.2 var(--display);
  padding: 0.55em 0; border-top: 1px solid var(--line);
}

.contact__big { font: 400 var(--step-2)/1.2 var(--display); display: grid; gap: 0.2em; margin: 1.5rem 0; }
.contact__big a { text-decoration-thickness: 1px; }
.foot { padding: 2rem var(--gutter) 3rem; border-top: 1px solid var(--line); }

/* ---------- lightbox ---------- */
.lightbox { border: 0; padding: 0; background: transparent; max-width: 96vw; max-height: 94vh; color: var(--paper); }
.lightbox::backdrop { background: rgba(8, 8, 10, 0.92); }
.lightbox img { max-width: 96vw; max-height: 84vh; width: auto; border: 1px solid var(--line); background: var(--ink-2); padding: 0.5rem; }
.lightbox p { margin: 0.8rem 0 0; max-width: none; display: flex; justify-content: space-between; gap: 1rem; align-items: center; }
.lightbox button { font: 500 var(--step-label)/1 var(--text); letter-spacing: 0.18em; text-transform: uppercase; background: none; color: var(--paper); border: 1px solid var(--line); padding: 0.8em 1.1em; cursor: pointer; }
.lightbox button:hover { border-color: var(--accent); color: var(--accent); }

@media print {
  body { background: #fff; color: #000; } body::before, .bar, #sky, .telemetry, .thumbs { display: none; }
  .stop { border-color: #ccc; padding-block: 1.5rem; } a { color: #000; } .worklist img, .about img { filter: none; }
}