/* ==========================================================================
   Site — header, hero, work, services, about, contact
   ========================================================================== */

/* --- Header --------------------------------------------------------------- */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  padding-block: var(--s-4);
  background: linear-gradient(to bottom, rgba(8, 8, 10, 0.85), rgba(8, 8, 10, 0));
  backdrop-filter: blur(6px);
  transition: background var(--d-base) var(--e-out);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-6);
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 1px;
  font-weight: 600;
  letter-spacing: -0.02em;
  /* The name is the logo — wrapping it across two lines breaks the bar. */
  white-space: nowrap;
}
.brand__mark { color: var(--c-accent); }
.brand:hover { color: var(--c-ink); }

.nav {
  display: flex;
  align-items: center;
  gap: clamp(var(--s-4), 2.5vw, var(--s-8));
}
.nav__link {
  font-size: var(--t-small);
  color: var(--c-ink-dim);
}
.nav__link:hover { color: var(--c-ink); }

@media (max-width: 640px) {
  .nav__link[data-optional] { display: none; }
}

/* At phone width the bar carries the name, two links and the language
   switch — everything shrinks together rather than one part wrapping. */
@media (max-width: 520px) {
  .brand { font-size: 0.875rem; }
  .nav { gap: var(--s-4); }
  .nav__link { font-size: 0.8125rem; }
  .lang__btn { padding: 3px 7px; }
}

/* Language switch */
.lang {
  display: flex;
  align-items: center;
  gap: 1px;
  padding: 2px;
  border: 1px solid var(--c-line);
  border-radius: 999px;
}
.lang__btn {
  padding: 4px 10px;
  border-radius: 999px;
  font-family: var(--f-mono);
  font-size: var(--t-label);
  letter-spacing: 0.06em;
  color: var(--c-ink-faint);
  transition: color var(--d-fast) var(--e-out),
              background var(--d-fast) var(--e-out);
}
.lang__btn:hover { color: var(--c-ink); }
.lang__btn[aria-pressed="true"] {
  background: var(--c-ink);
  color: var(--c-void);
}

/* --- Hero ----------------------------------------------------------------- */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--c-void);
}

/* The live WebGL scene. Sits behind the type and is purely decorative —
   every word stays in the DOM. */
.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.4s var(--e-out);
}
.hero__canvas.is-ready { opacity: 1; }

/* Keeps the type legible over the brightest part of the render. */
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    100deg,
    rgba(8, 8, 10, 0.94) 0%,
    rgba(8, 8, 10, 0.80) 36%,
    rgba(8, 8, 10, 0.10) 64%,
    rgba(8, 8, 10, 0.26) 100%
  );
  pointer-events: none;
}

/* Narrow screens put the type over the scene instead of beside it, so the
   scrim has to run top-to-bottom rather than left-to-right. */
@media (max-width: 899px) {
  .hero::after {
    background: linear-gradient(
      to bottom,
      rgba(8, 8, 10, 0.92) 0%,
      rgba(8, 8, 10, 0.86) 46%,
      rgba(8, 8, 10, 0.32) 78%,
      rgba(8, 8, 10, 0.5) 100%
    );
  }
}

.hero__inner {
  position: relative;
  z-index: 2;
  width: 100%;
  padding-block: calc(var(--s-32) + var(--s-8)) var(--s-24);
}

.hero__eyebrow {
  margin-bottom: var(--s-6);
  opacity: 0;
  animation: rise var(--d-slow) var(--e-out) 200ms forwards;
}

.hero__title {
  font-size: var(--t-hero);
  line-height: var(--lh-display);
  font-weight: 500;
  max-width: 16ch;
}
.hero__title span {
  display: block;
  opacity: 0;
  animation: rise var(--d-slow) var(--e-out) forwards;
}
.hero__title span:nth-child(1) { animation-delay: 320ms; }
.hero__title span:nth-child(2) { animation-delay: 440ms; }
.hero__title em {
  font-style: normal;
  color: var(--c-ink-faint);
}

.hero__lead {
  margin-top: var(--s-8);
  max-width: 46ch;
  opacity: 0;
  animation: rise var(--d-slow) var(--e-out) 600ms forwards;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  margin-top: var(--s-12);
  opacity: 0;
  animation: rise var(--d-slow) var(--e-out) 760ms forwards;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  .hero__eyebrow, .hero__title span, .hero__lead, .hero__actions {
    opacity: 1;
    animation: none;
  }
}

.hero__scroll {
  position: absolute;
  left: var(--pad-x);
  bottom: var(--s-8);
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
}
.hero__scroll::before {
  content: "";
  width: 40px;
  height: 1px;
  background: var(--c-ink-faint);
  transform-origin: left;
  animation: sweep 2.6s var(--e-io) infinite;
}
@keyframes sweep {
  0%, 100% { transform: scaleX(0.35); opacity: 0.5; }
  50%      { transform: scaleX(1);    opacity: 1; }
}

/* --- Buttons -------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  padding: 0.85em 1.5em;
  border-radius: 999px;
  font-size: var(--t-small);
  font-weight: 500;
  border: 1px solid var(--c-line);
  transition: background var(--d-fast) var(--e-out),
              border-color var(--d-fast) var(--e-out),
              color var(--d-fast) var(--e-out),
              transform var(--d-fast) var(--e-out);
}
.btn:hover { transform: translateY(-2px); }

.btn--primary {
  background: var(--c-ink);
  color: var(--c-void);
  border-color: var(--c-ink);
}
.btn--primary:hover {
  background: var(--c-accent);
  border-color: var(--c-accent);
  color: var(--c-void);
}

.btn--ghost { color: var(--c-ink-dim); }
.btn--ghost:hover {
  color: var(--c-ink);
  border-color: var(--c-ink-dim);
}

/* --- Section scaffolding -------------------------------------------------- */

.section {
  padding-block: var(--s-section);
  background: var(--c-ground);
}
.section--alt { background: var(--c-ground-2); }

.section__head {
  display: grid;
  gap: var(--s-4);
  margin-bottom: var(--s-16);
}
.section__title {
  font-size: var(--t-h1);
  font-weight: 500;
}

/* --- Work ----------------------------------------------------------------- */

.work {
  display: grid;
  gap: var(--s-24);
}

.project {
  display: grid;
  gap: var(--s-8);
  align-items: center;
}
@media (min-width: 900px) {
  .project {
    grid-template-columns: 1.15fr 1fr;
    gap: clamp(var(--s-8), 5vw, var(--s-16));
  }
  /* Alternate which side the media sits on, so the eye keeps moving. */
  .project:nth-child(even) .project__media { order: 2; }
}

.project__media {
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--c-well);
  border: 1px solid var(--c-line-soft);
  box-shadow: var(--shadow-card);
}
.project__media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform var(--d-slow) var(--e-out);
}
.project:hover .project__media img { transform: scale(1.03); }

.project__index {
  margin-bottom: var(--s-4);
  color: var(--c-accent);
}

.project__title {
  font-size: var(--t-h2);
  margin-bottom: var(--s-4);
}

.project__desc {
  color: var(--c-ink-dim);
  max-width: 48ch;
}

.project__stack {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  margin-top: var(--s-6);
}
.project__stack li {
  padding: 0.35em 0.8em;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  font-family: var(--f-mono);
  font-size: var(--t-label);
  letter-spacing: 0.06em;
  color: var(--c-ink-faint);
}

.project__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  margin-top: var(--s-8);
}

/* --- Services ------------------------------------------------------------- */

.services {
  display: grid;
  gap: var(--s-4);
}
@media (min-width: 860px) {
  .services { grid-template-columns: repeat(3, 1fr); }
}

.service {
  display: flex;
  flex-direction: column;
  gap: var(--s-4);
  padding: clamp(var(--s-6), 3vw, var(--s-12));
  background: var(--c-well);
  border: 1px solid var(--c-line-soft);
  border-radius: var(--r-md);
  transition: background var(--d-base) var(--e-out),
              border-color var(--d-base) var(--e-out),
              transform var(--d-base) var(--e-out);
}
.service:hover {
  background: var(--c-raised);
  border-color: var(--c-line);
  transform: translateY(-4px);
}
.service__title {
  font-size: var(--t-h3);
  font-weight: 500;
}
.service__desc {
  color: var(--c-ink-dim);
  font-size: var(--t-small);
  flex: 1;
}
.service__note {
  font-family: var(--f-mono);
  font-size: var(--t-label);
  letter-spacing: 0.08em;
  color: var(--c-accent);
}

/* --- About ---------------------------------------------------------------- */

.about {
  display: grid;
  gap: var(--s-12);
}
@media (min-width: 900px) {
  .about { grid-template-columns: 1.2fr 1fr; gap: var(--s-24); }
}

.about__body { display: grid; gap: var(--s-6); }
.about__body p { color: var(--c-ink-dim); max-width: var(--w-text); }
.about__body strong { color: var(--c-ink); font-weight: 500; }

.facts { display: grid; gap: 0; align-self: start; }
.fact {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--s-4);
  padding-block: var(--s-4);
  border-top: 1px solid var(--c-line-soft);
  font-size: var(--t-small);
}
.fact:last-child { border-bottom: 1px solid var(--c-line-soft); }
.fact__key { color: var(--c-ink-faint); }
.fact__val { text-align: right; }

/* --- Contact -------------------------------------------------------------- */

.contact { background: var(--c-void); }

.contact__title {
  font-size: var(--t-h1);
  font-weight: 500;
  max-width: 18ch;
  margin-bottom: var(--s-8);
}

.contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  margin-top: var(--s-12);
}

/* --- Footer --------------------------------------------------------------- */

.site-footer {
  padding-block: var(--s-8);
  background: var(--c-void);
  border-top: 1px solid var(--c-line-soft);
}
.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  font-size: var(--t-small);
  color: var(--c-ink-faint);
}

/* --- Scroll reveal -------------------------------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--d-slow) var(--e-out),
              transform var(--d-slow) var(--e-out);
}
.reveal.is-in {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}