/* ============================================================
   Vintik & Chpountik — Component styles
   ============================================================ */

/* ---------- HEADER ---------- */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color 400ms ease, background 400ms ease;
}

.header.is-scrolled {
  border-bottom-color: var(--color-divider);
}

.header__inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-4) clamp(var(--space-5), 4vw, var(--space-10));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.monogram {
  color: var(--color-text);
  display: flex;
  align-items: center;
  transition: color var(--transition-interactive);
}

.monogram:hover {
  color: var(--color-accent);
}

.nav {
  display: flex;
  gap: clamp(var(--space-4), 3vw, var(--space-8));
  font-family: var(--font-body);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 400;
  color: var(--color-text-muted);
}

.nav a {
  position: relative;
  padding: var(--space-1) 0;
}

.nav a:hover {
  color: var(--color-text);
}

.nav a::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-interactive);
}

.nav a:hover::after {
  transform: scaleX(1);
}

.theme-toggle {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: color var(--transition-interactive);
}

.theme-toggle:hover {
  color: var(--color-text);
}

/* Hide nav labels on very small screens (keep the monogram + toggle) */
@media (max-width: 560px) {
  .nav {
    gap: var(--space-4);
    font-size: 10px;
  }
}

@media (max-width: 420px) {
  .nav {
    display: none;
  }
}

/* ---------- HERO ---------- */

.hero {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-24) clamp(var(--space-5), 5vw, var(--space-16)) var(--space-16);
  position: relative;
}

.hero__wrap {
  max-width: var(--content-wide);
  margin: 0 auto;
  width: 100%;
  text-align: center;
}

.hero__eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.32em;
  color: var(--color-text-muted);
  margin-bottom: clamp(var(--space-10), 6vw, var(--space-16));
}

.hero__eyebrow span {
  margin-right: 0.6em;
  color: var(--color-text-faint);
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 400;
  line-height: 0.9;
  letter-spacing: -0.02em;
  color: var(--color-text);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(var(--space-1), 1vw, var(--space-3));
}

.hero__title-line {
  display: block;
}

.hero__title-amp {
  font-style: italic;
  color: var(--color-accent);
  font-size: 0.7em;
  line-height: 1;
  display: block;
  margin: clamp(-0.15em, -1vw, -0.1em) 0;
}

.hero__subtitle {
  margin-top: clamp(var(--space-8), 5vw, var(--space-12));
  font-family: var(--font-body);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  max-width: 42ch;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

.hero__footer {
  position: absolute;
  left: 0;
  right: 0;
  bottom: var(--space-8);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.32em;
  color: var(--color-text-faint);
}

.hero__dot {
  opacity: 0.6;
}

/* ---------- SECTIONS ---------- */

.section {
  padding-block: clamp(var(--space-24), 12vw, var(--space-32));
  padding-inline: clamp(var(--space-5), 5vw, var(--space-16));
  border-top: 1px solid var(--color-divider);
}

.section__grid {
  max-width: var(--content-wide);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: clamp(var(--space-8), 6vw, var(--space-20));
  align-items: start;
}

@media (max-width: 820px) {
  .section__grid {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }
}

.section__label {
  position: sticky;
  top: 100px;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  color: var(--color-text-muted);
}

@media (max-width: 820px) {
  .section__label {
    position: static;
    flex-direction: row;
    align-items: baseline;
    gap: var(--space-4);
  }
}

.section__number {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-2xl);
  color: var(--color-accent);
  line-height: 1;
}

.section__kicker {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.28em;
  color: var(--color-text-muted);
}

.section__body {
  max-width: 60ch;
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  font-size: var(--text-base);
  line-height: 1.75;
  color: var(--color-text);
}

.section__body--wide {
  max-width: 100%;
}

.section__body p {
  max-width: 60ch;
}

.section__body .lead {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: -0.005em;
  color: var(--color-text);
  margin-bottom: var(--space-2);
  max-width: 22ch;
}

.section__body .footnote {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-6);
  margin-top: var(--space-6);
  line-height: 1.7;
  max-width: 52ch;
}

/* ---------- MÉTIER — two engineers ---------- */

.two-columns {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: clamp(var(--space-6), 4vw, var(--space-12));
  align-items: stretch;
}

@media (max-width: 720px) {
  .two-columns {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }
}

.engineer {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.engineer__name {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  line-height: 1;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.engineer__role {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.28em;
  color: var(--color-accent);
  margin-top: calc(var(--space-3) * -1);
}

.engineer__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text);
  margin-top: var(--space-4);
}

.engineer__list p {
  max-width: 34ch;
}

.engineer__divider {
  width: 1px;
  background: var(--color-divider);
  min-height: 100%;
  align-self: stretch;
}

@media (max-width: 720px) {
  .engineer__divider {
    width: 100%;
    height: 1px;
    min-height: 1px;
  }
}

/* ---------- ŒUVRE — disciplines list ---------- */

.disciplines {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  padding-block: var(--space-6);
  margin-block: var(--space-4);
  max-width: 52ch;
}

.disciplines p {
  display: flex;
  gap: var(--space-3);
  line-height: 1.5;
}

.discipline__dot {
  color: var(--color-accent);
  font-weight: 700;
}

/* ---------- ARCHIVES ---------- */

.archive-entry {
  display: grid;
  grid-template-columns: 5rem 1fr;
  gap: clamp(var(--space-5), 4vw, var(--space-10));
  padding-block: var(--space-6);
  border-bottom: 1px solid var(--color-divider);
  font-size: var(--text-base);
  line-height: 1.75;
  max-width: 68ch;
  align-items: baseline;
}

.archive-entry:first-of-type {
  border-top: 1px solid var(--color-divider);
}

.archive-year {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--color-accent);
  font-size: var(--text-lg);
  line-height: 1;
}

.archive-text {
  max-width: 62ch;
  color: var(--color-text);
}

.archive-text em {
  color: var(--color-text);
  font-size: 1.08em;
  letter-spacing: 0;
  white-space: normal;
}

/* ---------- COLOPHON (footer) ---------- */

.colophon {
  padding: clamp(var(--space-16), 10vw, var(--space-24)) clamp(var(--space-5), 5vw, var(--space-16));
  border-top: 1px solid var(--color-divider);
  text-align: center;
}

.colophon__inner {
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
}

.colophon__mark {
  color: var(--color-text-muted);
}

.colophon__motto {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-text);
  line-height: 1;
}

.colophon__meta {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.28em;
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}

.colophon__legal {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.04em;
  max-width: 40ch;
  line-height: 1.6;
  margin-top: var(--space-4);
}

/* ---------- MOTION — entry fade ---------- */

.section,
.hero__wrap > * {
  animation: fade-in 900ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.hero__eyebrow {
  animation-delay: 100ms;
}
.hero__title {
  animation-delay: 300ms;
}
.hero__subtitle {
  animation-delay: 700ms;
}
.hero__footer {
  animation: fade-in 900ms cubic-bezier(0.22, 1, 0.36, 1) both;
  animation-delay: 1100ms;
}

@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .section,
  .hero__wrap > *,
  .hero__footer {
    animation: none;
  }
}