/* ============================================
   Heyman Forge — Layout
   Grid, Containers, Sections, Responsive
   ============================================ */

/* Navigation */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.25rem var(--content-padding);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.site-nav.scrolled {
  background-color: rgba(250, 250, 248, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 1px 0 var(--border);
}

.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* Content container */
.container {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--content-padding);
}

/* Sections */
section {
  padding: var(--section-gap) 0;
}

.section-header {
  margin-bottom: 3.5rem;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--highlight);
  display: block;
  margin-bottom: 0.75rem;
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 var(--content-padding);
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}


.hero-content {
  max-width: 720px;
  position: relative;
  z-index: 1;
}

.hero h1 {
  margin-bottom: 1.5rem;
}

.hero .subhead {
  margin: 0 auto 2.5rem;
}

.scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  animation: float 2.5s ease-in-out infinite;
}

.scroll-indicator svg {
  width: 20px;
  height: 20px;
  stroke: var(--text-muted);
}

@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* Value props grid */
.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
  margin-top: 3rem;
}

.value-item h3 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1.125rem;
}

.value-item p {
  color: var(--text-muted);
  font-size: 0.9375rem;
}

/* Flywheel section */
.flywheel-section {
  background-color: var(--card-bg);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.flywheel-diagram {
  margin: 3rem auto;
  max-width: 600px;
}

.stage-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}

/* Portfolio grid */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

/* About stats row */
.stats-row {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.stat {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* Contact / CTA */
.contact-section {
  text-align: center;
  padding-bottom: 4rem;
}

.contact-section h2 {
  margin-bottom: 1.5rem;
}

.contact-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-top: 2rem;
}

.contact-links a {
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

/* Footer */
.site-footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

.site-footer p {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

/* Scroll reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
  :root {
    --section-gap: 5rem;
    --content-padding: 1.25rem;
  }

  .nav-links {
    display: none;
  }

  .value-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .stage-cards {
    grid-template-columns: 1fr;
  }

  .portfolio-grid {
    grid-template-columns: 1fr;
  }

  .stats-row {
    flex-direction: column;
    gap: 1rem;
  }

  .contact-links {
    flex-direction: column;
    align-items: center;
    gap: 1rem;
  }
}

@media (max-width: 480px) {
  :root {
    --section-gap: 4rem;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}