/* -- TOKENS -------------------------------------------- */
:root {
  --color-bg:       #0F0F0E;
  --color-surface:  #1A1A18;
  --color-border:   #2E2E2B;
  --color-text:     #FFFFFF;
  --color-muted:    #FFFFFF;
  --color-dim:      #FFFFFF;
  --color-mint:     #25C47E;
  --color-blue:     #6B9FE4;

  --font-serif: 'DM Sans', system-ui, sans-serif;
  --font-sans:  'DM Sans', system-ui, sans-serif;
  --font-mono:  'DM Sans', system-ui, sans-serif;

  --text-display: 60px;
  --text-h1:      56px;
  --text-h2:      36px;
  --text-h3:      20px;
  --text-h4:      16px;
  --text-body:    17px;
  --text-label:   13px;
  --text-micro:   11px;

  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  28px;
  --space-xl:  48px;
  --space-2xl: 64px;
  --space-3xl: 96px;

  --pad-x: 64px;
}

/* -- RESET ---------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; height: 100%; }

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--text-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100vh;
  padding-top: 96px;
}

a { color: inherit; text-decoration: none; }

/* -- NAV ------------------------------------------------ */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 96px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--pad-x);
  background: var(--color-bg);
  border-bottom: none;
  z-index: 100;
}

.nav-logo {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: var(--text-h3);
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav-logo-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-mint);
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  gap: var(--space-2xl);
  list-style: none;
}

.nav-links a {
  font-family: var(--font-sans);
  font-size: var(--text-h3);
  color: var(--color-muted);
  transition: color 0.2s;
}

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

/* -- HERO ----------------------------------------------- */
.hero {
  position: relative;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.hero-network {
  position: absolute;
  inset: 0;
  scale: 0.5;
}

.network-lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.network-lines line {
  stroke: rgba(237, 236, 232, 0.18);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-dasharray: 8 12;
  animation: networkLineDrift 18s linear infinite;
  transition: stroke 0.35s ease, opacity 0.35s ease, stroke-width 0.35s ease;
}


.network-node {
  position: absolute;
  width: clamp(160px, 19vw, 230px);
  aspect-ratio: 1;
  border: 1px solid #FFFFFF;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  background: rgba(26, 26, 24, 0.85);
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.4);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-weight: 500;
  line-height: 1.08;
  text-align: center;
  transform: translate(calc(-50% + var(--para-x, 0px)), calc(-50% + var(--para-y, 0px)));
  transition:
    box-shadow 0.4s ease,
    border-color 0.4s ease,
    opacity 0.35s ease;
  cursor: default;
}

.node-label {
  display: block;
  font-size: var(--text-h2);
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.node-desc {
  display: block;
  font-size: var(--text-h3);
  font-weight: 400;
  letter-spacing: 0.015em;
  opacity: 0.65;
  transform: translateY(0);
  margin-top: var(--space-xs);
}

.network-node:hover {
  border-color: #FFFFFF;
  box-shadow:
    0 0 0 5px rgba(237, 236, 232, 0.04),
    0 30px 72px rgba(0, 0, 0, 0.6);
  animation-play-state: paused;
  z-index: 10;
}

.network-node:hover .node-label {
  transform: translateY(-3px);
}

.network-node:hover .node-desc {
  opacity: 0.65;
  transform: translateY(0);
}

.hero-network:has(.network-node:hover) .network-node:not(:hover) {
  opacity: 0.25;
}

.network-node-industrial {
  left: 8%;
  top: 40%;
  width: clamp(240px, 34vw, 500px);
}

.network-node-research {
  left: 82%;
  top: 8%;
  width: clamp(180px, 22vw, 280px);
  padding: var(--space-md);
}

.network-node-interface {
  left: 74%;
  top: 80%;
  width: clamp(150px, 19vw, 260px);
  padding: var(--space-md);
}

.network-node-branding {
  left: 40%;
  top: 92%;
  width: clamp(130px, 16vw, 220px);
}


@keyframes networkLineDrift {
  to { stroke-dashoffset: -80; }
}

/* -- WORKS SECTION -------------------------------------- */
.works {
  padding: var(--space-sm) var(--pad-x) var(--space-md);
  flex-shrink: 0;
}

.works-header {
  display: flex;
  align-items: baseline;
  justify-content: center;
  margin-bottom: var(--space-xl);
}

.works-label {
  font-family: var(--font-serif);
  font-weight: 700; /* section title — bold */
  font-size: var(--text-h2);
  color: var(--color-muted);
}

/* -- PROJECT TABLE HEADER ------------------------------- */
.project-list-header {
  display: grid;
  grid-template-columns: 50% 1fr auto;
  align-items: center;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid rgba(237, 236, 232, 0.12);
}

.project-list-header span {
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* -- PROJECT LIST --------------------------------------- */
.project-list {
  list-style: none;
  border-top: 1px solid rgba(237, 236, 232, 0.45);
}

.project-item {
  display: grid;
  grid-template-columns: 50% 1fr auto;
  align-items: center;
  padding: 4px 0;
  border-bottom: 1px solid rgba(237, 236, 232, 0.45);
  position: relative;
  cursor: pointer;
  transition: box-shadow 0.25s ease;
}


.project-year {
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--color-muted);
}

.project-title {
  font-family: var(--font-serif);
  font-style: normal;
  font-size: 18px;
  color: var(--color-text);
  line-height: 1.2;
  transition: color 0.2s;
  display: flex;
  align-items: baseline;
  gap: 24px;
}

.project-label {
  color: var(--color-muted);
  flex-shrink: 0;
}

.project-item:hover .project-cta {
  color: var(--color-mint);
}

.project-cat {
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--color-muted);
}

.project-tags {
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--color-muted);
  display: flex;
  align-items: baseline;
  gap: 24px;
}

.project-cta {
  display: inline-block;
  padding: 8px 18px;
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 500;
  color: var(--color-text);
  transition: color 0.2s;
  white-space: nowrap;
}

.cta-arrow {
  display: inline-flex;
  align-items: center;
  width: 28px;
  height: 1em;
  vertical-align: middle;
  flex-shrink: 0;
}

.cta-arrow::before {
  content: '';
  flex: 1;
  height: 1.5px;
  background: currentColor;
}

.cta-arrow::after {
  content: '';
  width: 0;
  height: 0;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  border-left: 7px solid currentColor;
  flex-shrink: 0;
}



/* -- HERO TAP CTA (mobile only) ------------------------- */
.hero-tap-cta {
  display: none;
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 100px;
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--text-label);
  font-weight: 500;
  letter-spacing: 0.07em;
  padding: 12px 28px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s;
}

.hero-tap-cta:active {
  background: rgba(255, 255, 255, 0.16);
}

/* -- TILT PROMPT (iOS only, shown via JS) --------------- */
.tilt-prompt {
  display: none;
  position: absolute;
  top: 24px;
  right: 24px;
  z-index: 20;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 100px;
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--text-label);
  font-weight: 500;
  letter-spacing: 0.07em;
  padding: 10px 20px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s, opacity 0.3s;
}

.tilt-prompt.visible {
  display: flex;
  align-items: center;
}

.tilt-prompt:active {
  background: rgba(255, 255, 255, 0.16);
}

@media (prefers-reduced-motion: reduce) {
  .hero-network,
  .network-node,
  .network-lines line { animation: none; }
}

/* -- RESPONSIVE ----------------------------------------- */
@media (max-width: 900px) {
  :root { --pad-x: 24px; }

  body {
    height: auto;
    min-height: 100svh;
    overflow-x: hidden;
    overflow-y: auto;
  }

  .hero {
    flex: none;
    height: 52svh;
    min-height: 280px;
  }

  .works {
    padding: var(--space-lg) var(--pad-x) var(--space-xl);
  }

  .network-node-industrial {
    width: clamp(160px, 40vw, 240px);
    font-size: clamp(16px, 4.5vw, 22px);
  }

  .network-node-research {
    width: clamp(82px, 20vw, 120px);
    font-size: clamp(10px, 2.6vw, 14px);
  }

  .network-node-interface {
    width: clamp(105px, 25vw, 150px);
    font-size: clamp(10px, 2.8vw, 16px);
  }

  .project-item {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    gap: var(--space-sm);
    padding: var(--space-md) 0;
  }

  .project-cat,
  .project-tags,
  .project-cta { display: none; }

  .project-title { font-size: var(--text-h3); }

  .filter-bar { gap: var(--space-lg); flex-wrap: wrap; justify-content: flex-start; }
}

/* -- MOBILE (≤ 600px) ------------------------------------ */
@media (max-width: 600px) {
  body {
    padding-top: 0;
    height: 100svh;
    overflow: hidden;
  }

  nav {
    background: transparent;
    height: 64px;
  }

  .hero {
    height: 100svh;
    min-height: unset;
    flex: none;
  }

  .hero-network {
    scale: 1;
  }

  .network-node {
    width: clamp(84px, 24vw, 108px);
  }

  .network-node-industrial {
    width: clamp(112px, 31vw, 144px);
  }

  .network-node-research,
  .network-node-interface {
    width: clamp(84px, 23vw, 106px);
    padding: var(--space-sm);
  }

  .node-label {
    font-size: clamp(11px, 3.2vw, 14px);
  }

  .hero-tap-cta {
    display: flex;
    align-items: center;
  }

  /* Works: hidden until hero is dismissed */
  .works {
    display: none;
  }

  /* Works-active: hero gone, works visible */
  body.works-active {
    height: auto;
    min-height: 100svh;
    overflow-y: auto;
    padding-top: 64px;
  }

  body.works-active nav {
    background: var(--color-bg);
  }

  body.works-active .hero {
    display: none;
  }

  body.works-active .works {
    display: block;
    padding: var(--space-xl) var(--pad-x) var(--space-2xl);
  }
}