/* =====================================================================
   vividmachines — Design System (shared with Ex Nihilo Arcanum Capital)
   Theme tokens live in :root so the whole site is re-skinnable in one place.
   ===================================================================== */

:root {
  /* Palette */
  --color-bg:        #08070f;
  --color-bg-2:      #0d0b16;
  --color-surface:   rgba(22, 19, 34, 0.72);
  --color-border:    rgba(201, 168, 106, 0.22);
  --color-gold:      #c9a86a;
  --color-gold-2:    #e6c988;
  --color-arcane:    #8a6bd6;
  --color-text:      #e8e4f0;
  --color-muted:     #9a94ad;

  /* Typography */
  --font-display: "Cormorant Garamond", "Trajan Pro", Georgia, "Times New Roman", serif;
  --font-body:    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Spacing / layout */
  --maxw: 1120px;
  --radius: 4px;
  --gutter: clamp(1.25rem, 4vw, 3rem);

  /* Effects */
  --shadow: 0 20px 60px -20px rgba(0, 0, 0, 0.8);
  --transition: 240ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* --------------------------------------------------------------------- */
/* Reset                                                                 */
/* --------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.65;
  font-size: clamp(1rem, 0.5vw + 0.9rem, 1.075rem);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

/* --------------------------------------------------------------------- */
/* Layout helpers                                                        */
/* --------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(4rem, 9vw, 7.5rem); position: relative; }
.section--tint { background: linear-gradient(180deg, transparent, var(--color-bg-2) 40%, transparent); }

.eyebrow {
  font-family: var(--font-body);
  text-transform: uppercase;
  letter-spacing: 0.32em;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-gold);
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.9rem, 3.5vw, 2.9rem);
  line-height: 1.1;
  letter-spacing: 0.01em;
  margin-bottom: 1.25rem;
}

.lead { color: var(--color-muted); max-width: 60ch; font-size: 1.1rem; }

/* --------------------------------------------------------------------- */
/* Header / Nav                                                          */
/* --------------------------------------------------------------------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  backdrop-filter: blur(10px);
  background: linear-gradient(180deg, rgba(8, 7, 15, 0.85), rgba(8, 7, 15, 0.35));
  border-bottom: 1px solid var(--color-border);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.brand { display: flex; align-items: center; gap: 0.7rem; }
.brand__mark {
  width: 40px; height: 40px; flex: none;
  border-radius: 7px;
}
.brand__name {
  font-family: var(--font-display);
  font-size: 1.15rem; font-weight: 600; letter-spacing: 0.04em;
  line-height: 1;
}
.brand__name small { display: block; font-size: 0.6rem; letter-spacing: 0.28em;
  text-transform: uppercase; color: var(--color-muted); margin-top: 3px; }

.nav__links { display: flex; gap: 2rem; list-style: none; align-items: center; }
.nav__links a {
  font-size: 0.85rem; letter-spacing: 0.06em; color: var(--color-muted);
  transition: color var(--transition); position: relative;
}
.nav__links a:hover { color: var(--color-text); }
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: -6px; height: 1px; width: 0;
  background: var(--color-gold); transition: width var(--transition);
}
.nav__links a:hover::after { width: 100%; }

.nav__toggle { display: none; background: none; border: 0; color: var(--color-text);
  font-size: 1.5rem; cursor: pointer; }

/* --------------------------------------------------------------------- */
/* Hero                                                                  */
/* --------------------------------------------------------------------- */
.hero {
  min-height: 100svh;
  display: flex; align-items: center;
  position: relative;
  isolation: isolate;
}
.hero__bg {
  position: absolute; inset: 0; z-index: -2;
  background: url("../assets/hero-bg.svg") center / cover no-repeat;
}
.hero__scrim {
  position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(120% 90% at 15% 20%, rgba(8,7,15,0.55), transparent 60%),
    linear-gradient(90deg, rgba(8,7,15,0.92) 0%, rgba(8,7,15,0.6) 45%, rgba(8,7,15,0.35) 100%),
    linear-gradient(180deg, rgba(8,7,15,0.5), rgba(8,7,15,0.85));
}
.hero__inner { max-width: 720px; padding-block: 8rem 4rem; }

.hero h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.8rem, 7vw, 5.2rem);
  line-height: 1.02;
  letter-spacing: 0.005em;
  margin-bottom: 1.5rem;
}
.hero h1 .accent {
  background: linear-gradient(120deg, var(--color-gold-2), var(--color-gold) 45%, var(--color-arcane));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .tagline {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1.25rem, 2.6vw, 1.85rem);
  color: var(--color-gold);
  letter-spacing: 0.02em;
  margin-bottom: 1.75rem;
}
.hero p.sub { color: var(--color-muted); max-width: 52ch; margin-bottom: 2.5rem; }

.hero__actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* --------------------------------------------------------------------- */
/* Buttons                                                               */
/* --------------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-size: 0.85rem; font-weight: 600; letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.95rem 1.8rem; border-radius: var(--radius);
  border: 1px solid transparent; cursor: pointer;
  transition: transform var(--transition), background var(--transition), border-color var(--transition), color var(--transition);
}
.btn--primary {
  background: linear-gradient(120deg, var(--color-gold), var(--color-gold-2));
  color: #1a1408;
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 10px 30px -10px rgba(201,168,106,0.6); }
.btn--ghost {
  border-color: var(--color-border); color: var(--color-text);
  background: rgba(255,255,255,0.02);
}
.btn--ghost:hover { border-color: var(--color-gold); color: var(--color-gold); }

/* --------------------------------------------------------------------- */
/* Cards / grid                                                          */
/* --------------------------------------------------------------------- */
.grid { display: grid; gap: 1.5rem; }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid--stats { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1rem; }

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  backdrop-filter: blur(6px);
  transition: transform var(--transition), border-color var(--transition);
}
.card:hover { transform: translateY(-4px); border-color: var(--color-gold); }
.card__icon { width: 40px; height: 40px; color: var(--color-gold); margin-bottom: 1.25rem; }
.card h3 { font-family: var(--font-display); font-size: 1.45rem; font-weight: 600; margin-bottom: 0.6rem; }
.card p { color: var(--color-muted); font-size: 0.97rem; }

.stat { text-align: center; padding: 1.5rem 1rem; }
.stat__num {
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(2rem, 4vw, 2.8rem);
  color: var(--color-gold);
  line-height: 1;
}
.stat__label { font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--color-muted); margin-top: 0.6rem; }

/* --------------------------------------------------------------------- */
/* Split / about                                                         */
/* --------------------------------------------------------------------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4.5rem); align-items: center; }
.split__media {
  aspect-ratio: 4 / 3;
  border: 1px solid var(--color-border); border-radius: var(--radius);
  background: center / cover no-repeat;
  box-shadow: var(--shadow);
  position: relative;
}
.split__media--geometry { background-image: url("../assets/geometry.svg"); }
.split__media--constellation { background-image: url("../assets/constellation.svg"); }
.split__media::after {
  content: ""; position: absolute; inset: 0; border-radius: var(--radius);
  background: linear-gradient(180deg, transparent 40%, rgba(8,7,15,0.6));
}

/* --------------------------------------------------------------------- */
/* Contact                                                               */
/* --------------------------------------------------------------------- */
.contact { text-align: center; }
.contact__email {
  display: inline-block; margin-top: 1rem;
  font-family: var(--font-display); font-size: clamp(1.3rem, 3vw, 2rem);
  color: var(--color-gold); letter-spacing: 0.02em;
  border-bottom: 1px solid var(--color-border);
  transition: border-color var(--transition), color var(--transition);
}
.contact__email:hover { border-color: var(--color-gold); color: var(--color-gold-2); }

/* --------------------------------------------------------------------- */
/* Footer                                                                */
/* --------------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: 2.5rem;
  color: var(--color-muted); font-size: 0.85rem;
}
.site-footer .container { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
.site-footer .disclaimer { max-width: 60ch; font-size: 0.74rem; line-height: 1.5; opacity: 0.75; }

/* --------------------------------------------------------------------- */
/* Reveal-on-scroll                                                      */
/* --------------------------------------------------------------------- */
/* Only hide when JS is available to reveal it again (see inline head script). */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity 700ms ease, transform 700ms ease; }
.js .reveal.is-visible { opacity: 1; transform: none; }

/* --------------------------------------------------------------------- */
/* Responsive                                                            */
/* --------------------------------------------------------------------- */
@media (max-width: 860px) {
  .split { grid-template-columns: 1fr; }
  .split__media { order: -1; }
  .nav__links {
    position: fixed; inset: 72px 0 auto 0;
    flex-direction: column; gap: 0; padding: 1rem var(--gutter) 1.5rem;
    background: var(--color-bg-2); border-bottom: 1px solid var(--color-border);
    transform: translateY(-120%); transition: transform var(--transition);
  }
  .nav__links.is-open { transform: none; }
  .nav__links a { display: block; padding: 0.85rem 0; width: 100%; }
  .nav__toggle { display: block; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
  .reveal { transition: none; opacity: 1; transform: none; }
}

/* =====================================================================
   vividmachines additions
   ===================================================================== */

/* Hero variants */
.hero--short { min-height: 62svh; }
.hero__inner--wide { max-width: 860px; }
.hero .sub a { color: var(--color-gold); border-bottom: 1px solid var(--color-border); transition: border-color var(--transition); }
.hero .sub a:hover { border-color: var(--color-gold); }

/* Identity cards (Engineer / Scientist / Hacker / Photographer) */
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.card--link { display: block; }
.card--link .card__kicker {
  display: block; margin-top: 1rem;
  font-size: 0.72rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--color-gold);
}

/* Timeline-ish lists (experience, education) */
.rows { list-style: none; display: grid; gap: 0; border-top: 1px solid var(--color-border); }
.rows li {
  display: grid; grid-template-columns: 1fr auto; gap: 1rem 2rem; align-items: baseline;
  padding: 1.1rem 0; border-bottom: 1px solid var(--color-border);
}
.rows .row__title { font-family: var(--font-display); font-size: 1.3rem; font-weight: 600; }
.rows .row__title a { color: var(--color-gold); transition: color var(--transition); }
.rows .row__title a:hover { color: var(--color-gold-2); }
.rows .row__meta { color: var(--color-muted); font-size: 0.95rem; }
.rows .row__when { color: var(--color-muted); font-size: 0.8rem; letter-spacing: 0.12em; text-transform: uppercase; white-space: nowrap; }
@media (max-width: 640px) { .rows li { grid-template-columns: 1fr; gap: 0.25rem; } }

/* Publications */
.pubs { list-style: none; counter-reset: pub; display: grid; gap: 0; border-top: 1px solid var(--color-border); }
.pubs li {
  counter-increment: pub; position: relative;
  padding: 1.25rem 0 1.25rem 3.25rem; border-bottom: 1px solid var(--color-border);
  line-height: 1.55;
}
.pubs li::before {
  content: counter(pub, decimal-leading-zero);
  position: absolute; left: 0; top: 1.35rem;
  font-family: var(--font-display); font-weight: 600; font-size: 1.1rem;
  color: var(--color-gold); letter-spacing: 0.04em;
}
.pubs .authors { color: var(--color-muted); font-size: 0.95rem; }
.pubs .ptitle { font-family: var(--font-display); font-size: 1.3rem; font-weight: 600; color: var(--color-text); }
.pubs a.ptitle { color: var(--color-gold); transition: color var(--transition); }
.pubs a.ptitle:hover { color: var(--color-gold-2); }
.pubs .venue { color: var(--color-muted); font-style: italic; font-size: 0.95rem; }
.pubs .note { display: block; font-size: 0.82rem; color: var(--color-muted); opacity: 0.85; margin-top: 0.3rem; }
.pubs .award { display: block; font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--color-gold); margin-top: 0.4rem; }

/* Quote / footer */
.motto { font-family: var(--font-display); font-style: italic; font-size: 1.15rem; color: var(--color-gold); }
.site-footer .latin { max-width: 60ch; font-size: 0.78rem; line-height: 1.5; opacity: 0.75; font-style: italic; }

/* Archive page: filter + item lists */
.filter {
  display: flex; align-items: center; gap: 0.75rem;
  border: 1px solid var(--color-border); border-radius: var(--radius);
  background: var(--color-surface); padding: 0.6rem 0.9rem; max-width: 520px;
}
.filter span { font-size: 0.72rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--color-gold); white-space: nowrap; }
.filter input {
  flex: 1; background: transparent; border: 0; outline: 0;
  color: var(--color-text); font: inherit; font-size: 0.95rem;
}
.filter input::placeholder { color: var(--color-muted); }

.sectionhead { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.sectionhead .hint { font-size: 0.72rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--color-muted); }

.list { list-style: none; display: grid; gap: 1rem; }
.item {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem 1.5rem;
  transition: transform var(--transition), border-color var(--transition);
}
.item:hover { transform: translateY(-3px); border-color: var(--color-gold); }
.item .badge {
  position: absolute; top: 1.25rem; right: 1.25rem;
  font-size: 0.68rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--color-gold); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: 0.25rem 0.55rem;
}
.item .title { font-family: var(--font-display); font-size: 1.35rem; font-weight: 600; padding-right: 7rem; margin-bottom: 0.35rem; }
.item .meta { color: var(--color-muted); font-size: 0.95rem; }
.item .tiny { color: var(--color-muted); font-size: 0.8rem; margin-top: 0.4rem; opacity: 0.8; }
.item .links { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.9rem; }
.item .tag {
  font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-gold); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: 0.35rem 0.7rem;
  transition: border-color var(--transition), color var(--transition);
}
.item .tag:hover { border-color: var(--color-gold); color: var(--color-gold-2); }
.item .tag.mutetag { color: var(--color-muted); }
@media (max-width: 640px) {
  .item .title { padding-right: 0; }
  .item .badge { position: static; display: inline-block; margin-bottom: 0.6rem; }
}
.section--archive { padding-block: clamp(2.5rem, 5vw, 4rem); }

/* Hero: single-line name + single-line buttons */
.hero__inner--wide { max-width: 1040px; }
.hero__name { font-size: clamp(1.6rem, 5.2vw, 4.6rem); white-space: nowrap; line-height: 1.05; }
.hero h1 .accent--full {
  background: linear-gradient(90deg, #ece8f4 0%, var(--color-gold-2) 38%, var(--color-gold) 62%, var(--color-arcane) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero__actions { gap: 0.6rem; }
.hero__actions .btn { padding: 0.8rem 1.15rem; font-size: 0.76rem; letter-spacing: 0.07em; white-space: nowrap; }
@media (min-width: 861px) { .hero__actions { flex-wrap: nowrap; } }

/* About page */
.prose { max-width: 66ch; display: grid; gap: 1.25rem; }
.prose p { color: var(--color-muted); font-size: 1.08rem; }
.prose p.lead--first { color: var(--color-text); font-size: 1.2rem; }
.split--top { align-items: start; }
.split__media--sticky { position: sticky; top: 100px; }

/* Publication links */
.pubs .links { display: flex; flex-wrap: wrap; gap: 0.45rem; margin-top: 0.6rem; }
.pubs .tag {
  font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-gold); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: 0.3rem 0.65rem;
  transition: border-color var(--transition), color var(--transition);
}
.pubs .tag:hover { border-color: var(--color-gold); color: var(--color-gold-2); }
.pubs .tag.mutetag { color: var(--color-muted); }

/* Home hero: tighter vertical rhythm */
.hero--home { min-height: 0; }
.hero--home .hero__inner { padding-block: 8.5rem 4.5rem; }
.hero--home .eyebrow { margin-bottom: 0.6rem; }
.hero--home h1 { margin-bottom: 0.5rem; }
.hero--home .tagline { margin-bottom: 0.9rem; }
.hero--home p.sub { margin-bottom: 1.4rem; }

/* Long-form document pages (shellcode tutorial) */
.doc__layout { grid-template-columns: 280px 1fr; align-items: start; }
@media (max-width: 860px) { .doc__layout { grid-template-columns: 1fr; } .toc { order: -1; } }
.toc { position: sticky; top: 96px; }
.toc__list { list-style: none; counter-reset: toc; display: grid; gap: 0.35rem; font-size: 0.9rem; }
.toc__list > li { counter-increment: toc; }
.toc__list > li::before { content: counter(toc, decimal-leading-zero) "  "; color: var(--color-gold); font-family: var(--font-display); font-weight: 600; }
.toc__list a { color: var(--color-muted); transition: color var(--transition); }
.toc__list a:hover { color: var(--color-gold); }
.toc__list ol { list-style: none; padding-left: 1.6rem; margin-top: 0.3rem; display: grid; gap: 0.25rem; font-size: 0.84rem; }
.toc .links { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.6rem; }
.toc .tag {
  font-size: 0.7rem; letter-spacing: 0.06em; color: var(--color-gold);
  border: 1px solid var(--color-border); border-radius: var(--radius); padding: 0.25rem 0.5rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; text-transform: none;
}
.toc .tag:hover { border-color: var(--color-gold); }

.doc__body { min-width: 0; color: var(--color-muted); font-size: 1rem; line-height: 1.7; }
.doc__body h2 {
  font-family: var(--font-display); font-weight: 600; font-size: clamp(1.7rem, 3vw, 2.3rem);
  color: var(--color-text); margin: 3rem 0 1rem; line-height: 1.15;
  padding-top: 1.25rem; border-top: 1px solid var(--color-border);
}
.doc__body h2:first-child { margin-top: 0; padding-top: 0; border-top: 0; }
.doc__body h4 {
  font-family: var(--font-display); font-weight: 600; font-size: 1.45rem;
  color: var(--color-gold); margin: 2.25rem 0 0.75rem;
}
.doc__body h2 a, .doc__body h4 a { color: inherit; }
.doc__body p { margin: 0 0 1rem; }
.doc__body a { color: var(--color-gold); border-bottom: 1px solid var(--color-border); transition: border-color var(--transition); }
.doc__body a:hover { border-color: var(--color-gold); }
.doc__body b { color: var(--color-text); font-weight: 600; }
.doc__body i { color: var(--color-gold-2); }
.doc__body ul { padding-left: 1.4rem; margin: 0 0 1rem; display: grid; gap: 0.35rem; }
.doc__body ul li::marker { color: var(--color-gold); }
.doc__body hr { border: 0; height: 1px; background: var(--color-border); margin: 1.25rem 0; }
.doc__body hr + pre, .doc__body pre + hr { margin-top: 0; }
.doc__body pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 0.84rem; line-height: 1.55; color: var(--color-text);
  background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius);
  padding: 1.1rem 1.25rem; margin: 0 0 1.25rem; overflow-x: auto; white-space: pre; tab-size: 4;
}
.doc__body pre b { color: var(--color-gold-2); }
.doc__body pre i { color: var(--color-muted); }
.doc__body pre a { border: 0; }

/* Anchor targets clear the fixed header */
[id] { scroll-margin-top: 96px; }