/* ============================================
   Layout — Sections, containers, nav, hero, responsive
   ============================================ */

/* ---- Main content above ambient orbs ---- */

main,
.site-footer {
  position: relative;
  z-index: 1;
}

/* ---- Container ---- */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* ---- Sections ---- */

.section {
  padding-block: var(--space-xl);
}

.section__title {
  margin-bottom: var(--space-lg);
}

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

.section--hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  overflow: hidden;
  padding: 0;
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero__name {
  font-family: var(--font-body);
  font-size: var(--fs-tagline);
  font-weight: var(--fw-light);
  letter-spacing: var(--ls-caps);
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-top: var(--space-sm);
}

.hero__tagline {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  font-weight: var(--fw-light);
  letter-spacing: var(--ls-body);
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

/* ---- Navigation ---- */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-sm) var(--container-pad);
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: var(--space-sm);
  transition: background-color 0.5s ease, backdrop-filter 0.5s ease;
}

.site-header.header--scrolled {
  background-color: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
}

.nav__list {
  display: flex;
  gap: var(--space-md);
  align-items: center;
}

.nav__link {
  font-size: var(--fs-meta);
  font-weight: var(--fw-regular);
  letter-spacing: var(--ls-caps);
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color 0.3s ease;
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width 0.3s var(--ease-out-expo);
}

.nav__link:hover {
  color: var(--color-text-primary);
}

.nav__link:hover::after {
  width: 100%;
}

/* ---- Summary ---- */

.section--summary {
  padding-block: var(--space-2xl) var(--space-xl);
}

.summary__layout {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
  max-width: 56rem;
  margin-inline: auto;
}

.summary__right {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.summary__lead {
  font-family: var(--font-display);
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: var(--fw-light);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  text-align: center;
  background: linear-gradient(
    135deg,
    var(--color-text-primary) 0%,
    var(--color-accent) 40%,
    var(--color-accent-warm) 70%,
    var(--color-text-primary) 100%
  );
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: sectionTitleShimmer 12s ease-in-out infinite alternate;
}

.summary__divider {
  width: 60px;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--color-accent) 50%,
    transparent
  );
  opacity: 0.5;
  flex-shrink: 0;
}

.summary__body {
  max-width: 42rem;
  font-size: var(--fs-body-lg);
  font-weight: var(--fw-light);
  line-height: var(--lh-relaxed);
  color: var(--color-text-secondary);
  text-align: center;
}

.summary__highlight {
  color: var(--color-text-primary);
  font-weight: var(--fw-medium);
  background: linear-gradient(
    120deg,
    var(--color-text-primary) 0%,
    var(--color-accent) 50%,
    var(--color-accent-warm) 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.section--contact {
  text-align: center;
  padding-block: var(--space-2xl);
}

.contact__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
}

.contact__link {
  font-family: var(--font-body);
  font-size: var(--fs-body-lg);
  font-weight: var(--fw-light);
  color: var(--color-text-secondary);
  transition: color 0.3s ease;
}

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

.contact__divider {
  display: none;
}

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

.site-footer {
  padding-block: var(--space-md);
  border-top: 1px solid var(--color-border);
}

.footer__text {
  text-align: center;
  font-size: var(--fs-small);
  color: var(--color-text-muted);
}

/* ============================================
   Responsive
   ============================================ */

/* Tablet */
@media (min-width: 640px) {
  .contact__content {
    flex-direction: row;
    justify-content: center;
    gap: var(--space-md);
  }

  .contact__divider {
    display: block;
    width: 1px;
    height: 1.2em;
    background: var(--color-text-muted);
    opacity: 0.4;
  }
}

/* Desktop */
@media (min-width: 1024px) {
  .section {
    padding-block: var(--space-2xl);
  }

  .section__title {
    margin-bottom: var(--space-xl);
  }

  .section--summary {
    padding-block: var(--space-2xl);
  }

  .summary__layout {
    flex-direction: row;
    align-items: flex-start;
    gap: var(--space-xl);
    max-width: 64rem;
  }

  .summary__body {
    flex: 1;
    text-align: left;
  }

  .summary__divider {
    width: 1px;
    height: auto;
    align-self: stretch;
    background: linear-gradient(
      to bottom,
      transparent,
      var(--color-accent) 50%,
      transparent
    );
  }

  .summary__right {
    flex-shrink: 0;
    width: 320px;
    align-items: center;
  }

  .summary__lead {
    font-size: clamp(2.4rem, 4vw, 3.8rem);
    text-align: center;
  }
}

/* ---- Light Theme Layout Overrides ---- */

[data-theme="light"] .site-header.header--scrolled {
  background-color: rgba(245, 243, 240, 0.85);
}

[data-theme="light"] .section--hero .hero__scroll-line {
  background: linear-gradient(to bottom, transparent, var(--color-text-muted));
}