/* ============================================================
   LAYOUT.CSS — Section scaffolding, grid, containers
   ============================================================ */

/* ---------- Page Wrapper ---------- */
#page {
  position: relative;
  z-index: 1;
}

/* ---------- Container ---------- */
.container {
  width: ;
  max-width: 99%;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- Section Base ---------- */
section {
  position: relative;
  padding-block: var(--section-pad);
  overflow: hidden;
}

/* ---------- Navigation ---------- */
#nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.25rem var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background-color var(--duration-base) var(--ease-standard),
              border-bottom-color var(--duration-base) var(--ease-standard);
  border-bottom: 1px solid transparent;
}

#nav.scrolled {
  background-color: rgba(13, 13, 13, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--color-border);
}

.nav-logo {
  font-family: 'Syne', sans-serif;
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-text);
  opacity: 0.7;
  transition: opacity var(--duration-fast) var(--ease-standard);
}
.nav-logo:hover { opacity: 1; }

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

.nav-links a {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  transition: color var(--duration-fast) var(--ease-standard);
}
.nav-links a:hover { color: var(--color-text); }

/* ---------- Hero Section ---------- */
#hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-block: 8rem;
}

.hero-content {
  max-width: 900px;
}

.hero-name {
  display: block;
  margin-bottom: 1.5rem;
  will-change: transform, opacity;
}

.hero-subtitle {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
  will-change: transform, opacity;
}

.hero-subtitle .sep {
  color: var(--color-accent);
  font-size: 1.25rem;
  line-height: 1;
}

.hero-subtitle span {
  font-size: var(--type-lead);
  color: var(--color-text-muted);
  font-weight: 400;
  letter-spacing: 0.02em;
}

.hero-description {
  font-size: var(--type-lead);
  color: var(--color-text-muted);
  max-width: 52ch;
  line-height: 1.7;
  margin-bottom: 3.5rem;
  will-change: transform, opacity;
}

.hero-cta-group {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  will-change: transform, opacity;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 3rem;
  left: var(--gutter);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-text-dim);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  will-change: transform, opacity;
}

.hero-scroll-hint .scroll-line {
  width: 40px;
  height: 1px;
  background: var(--color-text-dim);
  transform-origin: left center;
}

/* ---------- Evolution Section ---------- */
#evolution {
  background-color: var(--color-bg);
}

.evolution-header {
  margin-bottom: var(--space-xl);
  will-change: transform, opacity;
}

.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 1px;
  background: var(--color-border);
  transform-origin: top center;
}

.timeline-item {
  position: relative;
  padding-left: 2.5rem;
  padding-bottom: 3.5rem;
  will-change: transform, opacity;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -2rem;
  top: 0.5rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--color-text-dim);
  border: 1px solid var(--color-border);
  transition: background var(--duration-base) var(--ease-standard);
}

.timeline-item.active .timeline-dot {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.timeline-year {
  font-size: var(--type-label);
  color: var(--color-accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  font-family: 'JetBrains Mono', monospace;
}

.timeline-title {
  font-size: var(--type-h3);
  margin-bottom: 0.75rem;
  color: var(--color-text);
}

.timeline-desc {
  color: var(--color-text-muted);
  font-size: var(--type-body);
  max-width: 55ch;
}

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

/* ---------- Lab Section ---------- */
#lab {
  background-color: var(--color-bg-lab);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.lab-header {
  margin-bottom: var(--space-lg);
  will-change: transform, opacity;
}

.lab-modules {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr));
  gap: 1.5rem;
}

.lab-module {
  background: rgba(245, 245, 245, 0.02);
  border: 1px solid var(--color-border);
  border-radius: 2px;
  padding: 2rem;
  will-change: transform, opacity;
}

.lab-module-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

/* ---------- Impact Section ---------- */
#impact {
  background-color: var(--color-bg);
}

.impact-header {
  margin-bottom: var(--space-xl);
  will-change: transform, opacity;
}

.case-studies {
  display: grid;
  gap: 4rem;
}

.case-study {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding-bottom: 4rem;
  border-bottom: 1px solid var(--color-border);
  will-change: transform, opacity;
}

.case-study:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

@media (min-width: 768px) {
  .case-study {
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
  }
}

.case-study-meta { }

.case-study-number {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--color-accent);
  letter-spacing: 0.15em;
  margin-bottom: 0.75rem;
}

.case-study-company {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.case-study-domain {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.case-study-body { }

.case-block {
  margin-bottom: 2rem;
}

.case-block:last-child { margin-bottom: 0; }

.case-block-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  margin-bottom: 0.5rem;
}

.case-block-text {
  color: var(--color-text-muted);
  font-size: var(--type-body);
  line-height: 1.7;
}

.case-block-text.result {
  color: var(--color-text);
  font-size: var(--type-lead);
  font-weight: 500;
}

.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* ---------- Vision Section ---------- */
#vision {
  background-color: var(--color-bg);
  overflow: hidden;
}

.vision-header {
  margin-bottom: var(--space-xl);
  will-change: transform, opacity;
}

.vision-statements {
  display: grid;
  gap: 3rem;
  grid-template-columns: 1fr;
  max-width: 800px;
}

@media (min-width: 768px) {
  .vision-statements {
    grid-template-columns: 1fr 1fr;
  }
}

.vision-statement {
  will-change: transform, opacity;
}

.vision-statement-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--color-accent);
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
}

.vision-statement h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.vision-statement p {
  color: var(--color-text-muted);
  font-size: var(--type-body);
}

/* ---------- CTA Section ---------- */
#cta {
  background-color: var(--color-bg);
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.cta-headline {
  margin-bottom: 1.5rem;
  will-change: transform, opacity;
}

.cta-sub {
  color: var(--color-text-muted);
  font-size: var(--type-lead);
  margin-inline: auto;
  margin-bottom: 3.5rem;
  will-change: transform, opacity;
}

.cta-options {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
  will-change: transform, opacity;
}

/* ---------- Footer ---------- */
footer {
  padding: 2rem var(--gutter);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

footer p {
  font-size: 0.75rem;
  color: var(--color-text-dim);
  max-width: none;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  font-size: 0.75rem;
  color: var(--color-text-dim);
  transition: color var(--duration-fast) var(--ease-standard);
}
.footer-links a:hover { color: var(--color-text-muted); }

/* ---------- Dev Mode Overlay ---------- */
#dev-overlay {
  position: fixed;
  top: 4.5rem;
  right: 1rem;
  z-index: 200;
  background: rgba(0, 0, 0, 0.85);
  border: 1px solid var(--color-accent);
  border-radius: 2px;
  padding: 1rem 1.25rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--color-accent);
  min-width: 200px;
  pointer-events: none;
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity var(--duration-fast) var(--ease-standard),
              transform var(--duration-fast) var(--ease-standard);
}

#dev-overlay.active {
  opacity: 1;
  transform: translateY(0);
}

#dev-overlay .dev-row {
  display: flex;
  justify-content: space-between;
  padding: 0.2rem 0;
  border-bottom: 1px solid rgba(0, 229, 255, 0.08);
}
#dev-overlay .dev-row:last-child {
  border-bottom: none;
}
#dev-overlay .dev-label { color: rgba(0, 229, 255, 0.5); }
#dev-overlay .dev-val   { color: var(--color-accent); }

/* ---------- Dev Mode Toggle Button ---------- */
#dev-toggle {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 200;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: rgba(13, 13, 13, 0.8);
  border: 1px solid var(--color-border);
  color: var(--color-text-dim);
  font-size: 0.65rem;
  font-family: 'JetBrains Mono', monospace;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--duration-fast) var(--ease-standard),
              color var(--duration-fast) var(--ease-standard);
}

#dev-toggle {
  border-color: var(--color-accent);
  color: var(--color-accent);
}
#dev-toggle:hover {
  border-color: #64ffb7;
  color: #64ffb7;
}

#dev-toggle.active {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(0, 229, 255, 0.05);
}