/* --- Variables --- */
:root {
  --bg: #f6f4f0;
  --bg-card: #fffefb;
  --text: #252220;
  --text-muted: #6b6560;
  --accent: #0d9488;
  --accent-hover: #0f766e;
  --border: rgba(37, 34, 32, 0.08);
  --font-display: "DM Serif Display", Georgia, serif;
  --font-body: "DM Sans", system-ui, sans-serif;
  --width-content: min(100% - 2rem, 44rem);
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.5rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --duration: 0.35s;
}

/* --- Reset & base --- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Subtle warm grain overlay */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  z-index: 1;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--text);
  color: var(--bg);
  font-weight: 600;
  z-index: 100;
  transition: top var(--duration) var(--ease-out);
}
.skip-link:focus {
  top: var(--space-md);
}

/* --- Header & nav --- */
.site-header {
  position: relative;
  z-index: 2;
  max-width: var(--width-content);
  margin: 0 auto;
  padding: var(--space-lg) max(1rem, env(safe-area-inset-right)) 0 max(1rem, env(safe-area-inset-left));
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.menu-trigger {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: transparent;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--text);
  padding: 0.4rem 0.85rem;
  transition: color var(--duration) var(--ease-out), border-color var(--duration) var(--ease-out), background-color var(--duration) var(--ease-out);
}
.menu-trigger:hover {
  color: var(--accent);
  border-color: var(--accent);
  background-color: rgba(13, 148, 136, 0.06);
}
.menu-trigger:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.menu-icon {
  display: inline-block;
  vertical-align: middle;
  flex-shrink: 0;
}

.nav-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration) var(--ease-out), visibility var(--duration) var(--ease-out);
  z-index: 5;
}
.nav-overlay[aria-hidden="false"] {
  opacity: 1;
  visibility: visible;
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  text-align: center;
}
.nav-list a {
  display: block;
  padding: var(--space-md) var(--space-lg);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  transition: color var(--duration) var(--ease-out);
}
.nav-list a:hover,
.nav-list a:focus-visible { color: var(--accent); }

/* --- Main content --- */
.main {
  position: relative;
  z-index: 0;
  max-width: var(--width-content);
  margin: 0 auto;
  padding: 1.5rem max(1rem, env(safe-area-inset-right)) 4rem max(1rem, env(safe-area-inset-left));
}

.section {
  margin-bottom: var(--space-3xl);
}

/* Staggered reveal on load */
.hero-heading,
.hero-line,
.hero-graphic,
.intro-lead,
.intro p,
.section-label,
.project-list,
.projects-cta,
.beyond-work p,
.contact-links {
  opacity: 0;
  animation: reveal 0.6s var(--ease-out) forwards;
}
.hero-heading { animation-delay: 0.1s; }
.hero-line:first-of-type { animation-delay: 0.2s; }
.hero-line-accent { animation-delay: 0.35s; }
.hero-graphic { animation-delay: 0.4s; }
.intro-lead { animation-delay: 0.45s; }
.intro p:nth-of-type(2) { animation-delay: 0.55s; }
#projects .section-label { animation-delay: 0.65s; }
.project-list { animation-delay: 0.75s; }
.projects-cta { animation-delay: 0.85s; }
#beyond-work .section-label { animation-delay: 0.95s; }
#beyond-work p { animation-delay: 1.05s; }
#contact .section-label { animation-delay: 1.15s; }
#contact .contact-links { animation-delay: 1.25s; }

@keyframes reveal {
  from {
    opacity: 0;
    transform: translateY(0.5rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
  .hero-heading,
  .hero-line,
  .hero-graphic,
  .intro-lead,
  .intro p,
  .section-label,
  .project-list,
  .projects-cta,
  .beyond-work p,
  .contact-links {
    animation: none;
    opacity: 1;
  }
}

/* --- Hero --- */
.hero-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2xl);
  flex-wrap: wrap;
}
.hero-heading {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 600;
  line-height: 1.2;
  margin: 0;
  letter-spacing: -0.02em;
  flex: 0 1 auto;
  min-width: 0;
}

.hero-line {
  display: block;
  margin-bottom: 0.35em;
}

.hero-line em {
  font-style: italic;
  color: var(--accent);
  font-weight: 400;
}

/* Hero graphic: right of heading, vertically centered, original size */
.hero-graphic {
  flex: 0 0 auto;
  margin-left: auto;
  color: var(--accent);
  line-height: 0;
  cursor: pointer;
}
.hero-graphic .idea-svg {
  display: block;
  width: 100%;
  height: auto;
  max-width: 520px;
  max-height: 300px;
}
/* Gears: position and rotate */
.gears-svg .gear {
  transform-origin: 0 0;
}
.gear-path {
  fill: currentColor;
  opacity: 0.35;
}
.gear-hole {
  fill: var(--bg);
  opacity: 1;
}
.gear-1 {
  transform: translate(55px, 72px) rotate(0deg);
  animation: gear-spin-1 10s linear infinite;
}
.gear-2 {
  transform: translate(153px, 72px) rotate(0deg);
  animation: gear-spin-2 8s linear infinite;
}
.gear-3 {
  transform: translate(119px, 135px) rotate(0deg);
  animation: gear-spin-3 6s linear infinite;
}
@keyframes gear-spin-1 {
  to { transform: translate(55px, 72px) rotate(360deg); }
}
@keyframes gear-spin-2 {
  to { transform: translate(153px, 72px) rotate(-360deg); }
}
@keyframes gear-spin-3 {
  to { transform: translate(119px, 135px) rotate(360deg); }
}

/* When JS momentum is active, CSS animation is disabled */
.gears-svg.gears-momentum .gear-1,
.gears-svg.gears-momentum .gear-2,
.gears-svg.gears-momentum .gear-3 {
  animation: none;
}

@media (prefers-reduced-motion: reduce) {
  .gear-1, .gear-2, .gear-3 { animation: none; }
}

@media (max-width: 640px) {
  .hero-inner { flex-direction: column; align-items: flex-start; }
  .hero-graphic { margin-left: 0; }
  .hero-graphic .idea-svg { max-width: 380px; max-height: 220px; }
  .menu-trigger { min-height: 44px; padding: 0.5rem 1rem; }
}

/* --- Intro --- */
.intro p {
  margin: 0 0 var(--space-lg);
  color: var(--text);
}
.intro p:last-child { margin-bottom: 0; }

.intro-lead {
  font-size: 1.125rem;
  margin-bottom: var(--space-lg);
}

/* --- Links --- */
a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--duration) var(--ease-out), border-color var(--duration) var(--ease-out);
}
a:hover {
  color: var(--accent-hover);
  border-bottom-color: var(--accent);
}
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* --- Icons --- */
.icon {
  display: inline-block;
  vertical-align: middle;
  flex-shrink: 0;
}
.icon-external {
  margin-left: 0.25em;
  opacity: 0.8;
}
.contact a .icon {
  margin-right: 0.35em;
}
.projects-cta .icon {
  margin-right: 0.35em;
}

/* --- Section labels --- */
.section-label {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0.02em;
  color: var(--text-muted);
  margin: 0 0 var(--space-md);
}

/* --- Projects --- */
.project-list {
  list-style: none;
  margin: 0 0 var(--space-lg);
  padding: 0;
}

.project-item {
  display: block;
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border);
}
.project-item:last-child { border-bottom: none; }

.project-name {
  font-weight: 600;
  display: block;
  margin-bottom: var(--space-xs);
}
.project-desc {
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.projects-cta { margin: 0; }

/* --- Beyond work --- */
.beyond-work p { margin: 0; }

/* --- Contact --- */
.contact-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  margin: 0;
}
.contact-link-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  color: var(--text-muted);
  transition: color var(--duration) var(--ease-out), transform var(--duration) var(--ease-out);
}
.contact-link-icon:hover {
  color: var(--accent);
  transform: translateY(-2px);
}
.contact-link-icon .icon {
  margin: 0;
}

/* --- Responsive: small phones and touch --- */
@media (max-width: 640px) {
  .main { padding-top: 1rem; }
  .section { margin-bottom: var(--space-2xl); }
}
@media (max-width: 380px) {
  :root { --width-content: 100%; }
  .main { padding-left: 1rem; padding-right: 1rem; }
  .contact-links { gap: var(--space-md); }
}