/* ==========================================================================
   Quillan Smith — portfolio styles
   Clean, dark, minimal. Hairline borders over shadows.
   ========================================================================== */

:root {
  --bg:            #0d0f12;
  --bg-elev:       #14171b;
  --bg-elev-2:     #191d22;
  --text:          #e8e9eb;
  --text-muted:    #9aa0a6;
  --accent:        #5eead4;
  --accent-dim:    #3fb9a7;
  --hairline:      rgba(255, 255, 255, 0.09);
  --hairline-soft: rgba(255, 255, 255, 0.05);

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --reading: 720px;
  --page:    1080px;

  --radius:    6px;
  --radius-lg: 8px;

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6rem;
}

/* ---------- Reset-ish ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--accent); text-decoration: none; transition: color 0.15s ease; }
a:hover { color: var(--text); }

h1, h2, h3 { line-height: 1.2; font-weight: 600; letter-spacing: -0.01em; }

::selection { background: var(--accent); color: var(--bg); }

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--bg);
  padding: 0.5rem 1rem;
  z-index: 100;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}
.skip-link:focus { left: 1rem; top: 1rem; }

/* ---------- Layout ---------- */
.wrap {
  width: 100%;
  max-width: var(--page);
  margin-inline: auto;
  padding-inline: 1.5rem;
}
.wrap--reading { max-width: var(--reading); }

.main { min-height: 60vh; }

/* ---------- Eyebrow / mono labels ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.75rem;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(13, 15, 18, 0.8);
  backdrop-filter: saturate(160%) blur(10px);
  -webkit-backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--hairline);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
}
.site-header__brand {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text);
  letter-spacing: 0.02em;
}
.site-header__brand:hover { color: var(--accent); }

.site-nav__list {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.site-nav__link {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}
.site-nav__link:hover { color: var(--text); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  cursor: pointer;
  padding: 0 9px;
}
.nav-toggle__bar {
  height: 1.5px;
  width: 100%;
  background: var(--text);
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:first-child {
  transform: translateY(3.25px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:last-child {
  transform: translateY(-3.25px) rotate(-45deg);
}

/* ---------- Hero (home) ---------- */
.hero {
  padding-top: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--hairline-soft);
}
.hero__name {
  font-size: clamp(2.5rem, 7vw, 4.25rem);
  margin: 0 0 1rem;
  letter-spacing: -0.03em;
}
.hero__tagline {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  color: var(--text-muted);
  max-width: 40ch;
  margin: 0 0 1.75rem;
  font-weight: 400;
}
.hero__intro {
  max-width: 60ch;
  color: var(--text);
  margin: 0;
}

/* ---------- Section heads ---------- */
.section { padding-block: var(--space-5); }
.section__head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: var(--space-3);
}
.section__title {
  font-size: 1.5rem;
  margin: 0;
}
.section__subheading {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted, #888);
  margin: var(--space-4) 0 var(--space-2);
}

/* ---------- Project grid (home) ---------- */
.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  list-style: none;
  padding: 0;
  margin: 0;
}
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--bg-elev);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}
.card:hover {
  border-color: rgba(94, 234, 212, 0.4);
  transform: translateY(-3px);
  background: var(--bg-elev-2);
}
.card__media {
  aspect-ratio: 16 / 10;
  border-bottom: 1px solid var(--hairline);
  background: var(--bg-elev-2);
  overflow: hidden;
}
.card__media img { width: 100%; height: 100%; object-fit: cover; }
.card__body { padding: 1.4rem 1.5rem 1.6rem; }
.card__index {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.12em;
}
.card__title {
  font-size: 1.2rem;
  margin: 0.4rem 0 0.5rem;
  color: var(--text);
}
.card:hover .card__title { color: var(--accent); }
.card__teaser {
  color: var(--text-muted);
  font-size: 0.98rem;
  margin: 0;
  line-height: 1.55;
}
.card__link { position: absolute; inset: 0; }
.card__link span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* ---------- Tags ---------- */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
  margin: 1.25rem 0 0;
}
.tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  border: 1px solid var(--hairline);
  border-radius: 100px;
  padding: 0.2rem 0.7rem;
}

/* ---------- Project pages ---------- */
.project { padding-block: var(--space-4) var(--space-5); }
.project__back {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  display: inline-block;
  margin-bottom: var(--space-3);
}
.project__back:hover { color: var(--accent); }
.project__header { margin-bottom: var(--space-4); }
.project__title {
  font-size: clamp(2rem, 5vw, 2.9rem);
  margin: 0;
  letter-spacing: -0.02em;
}
.project__lede {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin: 1rem 0 0;
  font-weight: 400;
}

/* ---------- Prose (reading column) ---------- */
.prose > * + * { margin-top: 1.4rem; }
.prose h2 {
  font-size: 1.35rem;
  margin-top: var(--space-4);
  padding-top: var(--space-2);
  border-top: 1px solid var(--hairline-soft);
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
}
.prose h2 .num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  font-weight: 500;
}
.prose h3 {
  font-size: 1.08rem;
  margin-top: var(--space-3);
  color: var(--text);
}
.prose p { color: var(--text); }
.prose ul, .prose ol { padding-left: 1.25rem; color: var(--text); }
.prose li { margin-top: 0.4rem; }
.prose li::marker { color: var(--accent-dim); }
.prose strong { color: var(--text); font-weight: 600; }

.prose blockquote {
  margin: 1.6rem 0;
  padding: 0.4rem 0 0.4rem 1.25rem;
  border-left: 2px solid var(--accent-dim);
  color: var(--text);
  font-style: normal;
}

.callout {
  background: var(--bg-elev);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
}
.callout h3 { margin-top: 0; }
.callout p:last-child { margin-bottom: 0; }

.btn-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 0.6rem 1rem;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.btn-link:hover { border-color: var(--accent); background: rgba(94, 234, 212, 0.06); color: var(--accent); }

/* ---------- Figures / media ---------- */
.figure { margin: 1.8rem 0; }
.figure__img {
  width: 100%;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
}
.figure__caption {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.6rem;
  letter-spacing: 0.01em;
}
.figure--video .video, .video {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--hairline);
}
.video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

/* Gallery */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin: 1.8rem 0;
}
.gallery .figure { margin: 0; }

/* ---------- Placeholders (until real assets land) ---------- */
.placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  text-align: center;
  background:
    repeating-linear-gradient(
      45deg,
      var(--bg-elev),
      var(--bg-elev) 12px,
      var(--bg-elev-2) 12px,
      var(--bg-elev-2) 24px
    );
  border: 1px dashed var(--hairline);
  border-radius: var(--radius);
  color: var(--text-muted);
  padding: 1.5rem;
}
.placeholder--image { aspect-ratio: 16 / 10; }
.placeholder--video { aspect-ratio: 16 / 9; }
.placeholder--thumb { width: 100%; height: 100%; border: 0; border-radius: 0; }
.placeholder__label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}
.placeholder__name {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  word-break: break-word;
}

/* ---------- About ---------- */
.about { padding-block: var(--space-5); }
.about__grid {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: var(--space-4);
  align-items: start;
}
.about__photo .figure { margin: 0; }
.about__photo .placeholder--image { aspect-ratio: 4 / 5; }
.about__lede { font-size: 1.15rem; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--hairline);
  margin-top: var(--space-6);
  padding-block: var(--space-3);
}
.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.site-footer__contact {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}
.site-footer__contact a { color: var(--text-muted); }
.site-footer__contact a:hover { color: var(--accent); }
.site-footer__sep { color: var(--hairline); }
.site-footer__copy {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  margin: 0;
}

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  .nav-toggle { display: flex; }
  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-elev);
    border-bottom: 1px solid var(--hairline);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
  }
  .site-nav.is-open { max-height: 320px; }
  .site-nav__list {
    flex-direction: column;
    gap: 0;
    padding: 0.5rem 1.5rem 1rem;
  }
  .site-nav__list li { border-top: 1px solid var(--hairline-soft); }
  .site-nav__link { display: block; padding: 0.85rem 0; font-size: 0.95rem; }

  .project-grid { grid-template-columns: 1fr; }
  .about__grid { grid-template-columns: 1fr; gap: var(--space-3); }
  .about__photo { max-width: 240px; }
}

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

/* Image lightbox — click any figure image to expand it */
.figure__img { cursor: zoom-in; }

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 3.5rem 1.5rem 2rem;
  background: rgba(6, 8, 10, 0.92);
  cursor: zoom-out;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}
.lightbox.is-open { opacity: 1; visibility: visible; }

.lightbox__img {
  max-width: min(100%, 1400px);
  max-height: 82vh;
  object-fit: contain;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.55);
  cursor: default;
}
.lightbox__caption {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
  max-width: 60ch;
  margin: 0;
}
.lightbox__close {
  position: absolute;
  top: 1rem;
  right: 1.25rem;
  width: 2.4rem;
  height: 2.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--hairline);
  border-radius: 50%;
  background: var(--bg-elev);
  color: var(--text);
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
}
.lightbox__close:hover { background: var(--bg-elev-2); }

@media (prefers-reduced-motion: reduce) {
  .lightbox { transition: none; }
}