/* ============================================================
   SYMBIOTIC LABS — Shared stylesheet
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Geist:wght@300;400;500;600&family=Instrument+Serif:ital@0;1&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  /* Palette — pulled from the logo */
  --void: #050a14;
  --void-2: #0a1224;
  --void-3: #0f1a30;
  --ink: #d6deeb;
  --ink-dim: #8392b4;
  --ink-faint: #4a5878;
  --line: rgba(110, 165, 255, 0.12);
  --line-bright: rgba(110, 165, 255, 0.32);

  --blue: #3aa6ff;        /* deep accent — from logo */
  --blue-bright: #6cc4ff; /* lighter accent — from logo */
  --blue-glow: rgba(58, 166, 255, 0.45);

  /* Type */
  --font-sans: 'Geist', ui-sans-serif, system-ui, sans-serif;
  --font-serif: 'Instrument Serif', ui-serif, Georgia, serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  /* Layout */
  --maxw: 1280px;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--void);
  color: var(--ink);
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: -0.01em;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* Grain overlay — gives the dark mode some texture */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.035;
  mix-blend-mode: overlay;
  background-image:
    url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.6 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ===== Typography ===== */

h1, h2, h3, h4 {
  font-family: var(--font-sans);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: #fff;
}

.serif-italic {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.eyebrow::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--blue);
}

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

/* ===== Header / nav ===== */

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  padding: 18px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(to bottom, rgba(5, 10, 20, 0.85), rgba(5, 10, 20, 0));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, background 0.3s ease;
}
.site-header.scrolled {
  border-bottom-color: var(--line);
  background: rgba(5, 10, 20, 0.92);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #fff;
}
.brand img { height: 32px; width: 32px; }
.brand .lab { color: var(--ink-dim); font-weight: 300; }

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.02em;
}
.nav a {
  color: var(--ink-dim);
  position: relative;
  padding: 4px 0;
  transition: color 0.2s ease;
}
.nav a:hover, .nav a.active { color: #fff; }
.nav a.active::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0; right: 0;
  height: 1px;
  background: var(--blue);
}

@media (max-width: 720px) {
  .nav { gap: 14px; font-size: 12px; }
  .nav a { padding: 4px 0; }
  .brand .lab { display: none; }
}

/* ===== Sections ===== */

main { position: relative; z-index: 2; }

section {
  padding: clamp(5rem, 12vh, 9rem) var(--gutter);
  max-width: var(--maxw);
  margin: 0 auto;
}

.section-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 300;
  letter-spacing: -0.04em;
  margin-bottom: 1rem;
  max-width: 22ch;
}
.section-lede {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  color: var(--ink-dim);
  max-width: 56ch;
  line-height: 1.65;
}

/* ===== Reveal-on-scroll ===== */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s cubic-bezier(0.2, 0.6, 0.2, 1), transform 0.9s cubic-bezier(0.2, 0.6, 0.2, 1);
}
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }
.reveal[data-delay="4"] { transition-delay: 0.32s; }

/* ===== Footer ===== */

.site-footer {
  position: relative;
  z-index: 2;
  border-top: 1px solid var(--line);
  padding: 3rem var(--gutter) 2rem;
  margin-top: 4rem;
}
.site-footer .inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--ink-faint);
  letter-spacing: 0.04em;
}
.site-footer a { color: var(--ink-dim); transition: color 0.2s ease; }
.site-footer a:hover { color: var(--blue-bright); }

/* ===== Buttons ===== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  border: 1px solid var(--line-bright);
  border-radius: 999px;
  background: transparent;
  color: #fff;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--mx, 50%) var(--my, 50%), var(--blue-glow), transparent 60%);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.btn:hover { border-color: var(--blue); color: var(--blue-bright); }
.btn:hover::before { opacity: 1; }
.btn span { position: relative; z-index: 1; }
.btn .arrow { display: inline-block; transition: transform 0.3s ease; }
.btn:hover .arrow { transform: translateX(4px); }

/* ============================================================
   HOME PAGE
   ============================================================ */

/* --- Hero --- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  position: relative;
  padding: 6rem var(--gutter) 4rem;
  max-width: none;
}

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

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, #000 30%, transparent 80%);
  z-index: 0;
  opacity: 0.5;
}

.hero-vignette {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 30%, rgba(58, 166, 255, 0.12), transparent 50%),
    radial-gradient(ellipse at 50% 100%, rgba(5, 10, 20, 1), transparent 60%);
  z-index: 0;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 920px;
}

.hero-logo {
  display: block;
  width: 110px;
  height: 110px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 2.5rem;
  object-fit: contain;
  filter: drop-shadow(0 0 40px var(--blue-glow));
  animation: float 6s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.hero-eyebrow {
  margin-bottom: 1.5rem;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.hero-eyebrow .dot {
  width: 6px; height: 6px;
  background: var(--blue);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--blue);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.7); }
}

.hero-title {
  font-size: clamp(2.5rem, 7.5vw, 6rem);
  font-weight: 300;
  line-height: 1;
  letter-spacing: -0.045em;
  margin-bottom: 1.5rem;
  color: #fff;
}
.hero-title .meets {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--blue-bright);
  display: inline-block;
  padding: 0 0.05em;
}

.hero-sub {
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  color: var(--ink-dim);
  max-width: 52ch;
  margin: 0 auto 2.5rem;
  line-height: 1.65;
  font-weight: 300;
}

.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--ink-faint);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  z-index: 2;
}
.hero-scroll .line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, transparent, var(--blue));
  animation: scrollLine 2.4s ease-in-out infinite;
}
@keyframes scrollLine {
  0% { transform: scaleY(0.3); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0.3); transform-origin: bottom; }
}

/* --- Research grid (home) --- */

.research {
  padding-top: 6rem;
}

.research-head {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: end;
  margin-bottom: 4rem;
}
@media (max-width: 800px) {
  .research-head { grid-template-columns: 1fr; gap: 1.5rem; }
}

.research-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
@media (max-width: 720px) {
  .research-grid { grid-template-columns: 1fr; }
}

.research-cell {
  background: var(--void);
  padding: 3rem 2.5rem;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 320px;
  overflow: hidden;
  transition: background 0.5s ease;
}
.research-cell::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--mx, 50%) var(--my, 50%), rgba(58, 166, 255, 0.08), transparent 50%);
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
}
.research-cell:hover { background: var(--void-2); }
.research-cell:hover::before { opacity: 1; }
.research-cell:hover .research-num { color: var(--blue); }
.research-cell:hover .research-arrow { transform: translate(6px, -6px); color: var(--blue-bright); }

.research-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--ink-faint);
  transition: color 0.4s ease;
}
.research-arrow {
  position: absolute;
  top: 2rem;
  right: 2.5rem;
  font-size: 20px;
  color: var(--ink-faint);
  transition: transform 0.4s ease, color 0.4s ease;
}
.research-cell h3 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 300;
  letter-spacing: -0.03em;
  margin-bottom: 0.6rem;
}
.research-cell h3 .it {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--blue-bright);
  font-weight: 400;
}
.research-cell p {
  color: var(--ink-dim);
  font-size: 14px;
  line-height: 1.6;
  max-width: 36ch;
}

/* --- Manifesto / about strip --- */

.manifesto {
  padding: 8rem var(--gutter);
  max-width: var(--maxw);
  margin: 0 auto;
  position: relative;
}
.manifesto p {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3.5vw, 2.6rem);
  font-weight: 400;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--ink);
  max-width: 24ch;
}
.manifesto p em {
  color: var(--blue-bright);
  font-style: italic;
}
.manifesto .signature {
  margin-top: 3rem;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* ============================================================
   SUB-PAGE TEMPLATE
   ============================================================ */

.subpage-hero {
  padding: 12rem var(--gutter) 5rem;
  max-width: var(--maxw);
  margin: 0 auto;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.subpage-hero::after {
  content: '';
  position: absolute;
  bottom: -1px; left: var(--gutter);
  width: 80px; height: 1px;
  background: var(--blue);
}
.subpage-hero .crumbs {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 2rem;
}
.subpage-hero .crumbs a:hover { color: var(--blue-bright); }
.subpage-hero .crumbs span { color: var(--blue); }

.subpage-title {
  font-size: clamp(3rem, 9vw, 7rem);
  font-weight: 300;
  letter-spacing: -0.05em;
  line-height: 0.95;
  margin-bottom: 2rem;
  color: #fff;
}
.subpage-title .it {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--blue-bright);
}

.subpage-lede {
  font-size: clamp(1.05rem, 1.8vw, 1.3rem);
  color: var(--ink-dim);
  max-width: 60ch;
  line-height: 1.55;
  font-weight: 300;
}

/* --- Project showcase --- */

.projects {
  padding: 6rem var(--gutter);
  max-width: var(--maxw);
  margin: 0 auto;
}

.projects-meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 3rem;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
  border-bottom: 1px solid var(--line);
  padding-bottom: 1rem;
}
.projects-meta .count { color: var(--blue); }

.project {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
  padding: 3rem 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
}
@media (max-width: 800px) {
  .project { grid-template-columns: 1fr; gap: 1.5rem; padding: 2rem 0; }
}

.project-visual {
  aspect-ratio: 16 / 10;
  background: var(--void-2);
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}
.project-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(45deg, transparent 0 12px, rgba(58, 166, 255, 0.04) 12px 13px),
    radial-gradient(circle at 30% 40%, rgba(58, 166, 255, 0.18), transparent 55%),
    radial-gradient(circle at 70% 60%, rgba(108, 196, 255, 0.12), transparent 55%);
  transition: transform 0.8s cubic-bezier(0.2, 0.6, 0.2, 1);
  z-index: 0;
}
.project-visual:hover::before { transform: scale(1.05); }

/* Media fills the visual area; gradient sits underneath as a fallback */
.project-visual video,
.project-visual img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  z-index: 1;
  transition: transform 0.8s cubic-bezier(0.2, 0.6, 0.2, 1);
}
.project-visual:hover video,
.project-visual:hover img {
  transform: scale(1.04);
}

/* Subtle top fade so the corner tag stays legible over any image */
.project-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(5, 10, 20, 0.55) 0%, rgba(5, 10, 20, 0) 28%);
  z-index: 2;
  pointer-events: none;
}

.project-visual .tag {
  position: absolute;
  top: 16px; left: 16px;
  z-index: 3;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 6px 10px;
  background: rgba(5, 10, 20, 0.8);
  border: 1px solid var(--line);
  color: var(--blue-bright);
  backdrop-filter: blur(8px);
}

.project-body .project-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--blue);
  margin-bottom: 1rem;
}
.project-body h3 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 300;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}
.project-body h3 .it {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--blue-bright);
  font-weight: 400;
}
.project-body .desc {
  color: var(--ink-dim);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  max-width: 56ch;
}
.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.05em;
  border-top: 1px solid var(--line);
  padding-top: 1rem;
}
.project-meta div {
  flex: 1 1 50%;
  padding: 6px 0;
  display: flex;
  gap: 12px;
}
.project-meta .label {
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  min-width: 70px;
}
.project-meta .val { color: var(--ink); }

/* ============================================================
   CONTACT PAGE
   ============================================================ */

.contact {
  min-height: calc(100vh - 80px);
  display: flex;
  align-items: center;
  padding: 10rem var(--gutter) 6rem;
  max-width: var(--maxw);
  margin: 0 auto;
}
.contact-inner {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
@media (max-width: 800px) {
  .contact-inner { grid-template-columns: 1fr; gap: 3rem; }
}

.contact-headline {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 300;
  letter-spacing: -0.04em;
  line-height: 1;
}
.contact-headline .it {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--blue-bright);
}

.contact-block {
  margin-bottom: 2.5rem;
}
.contact-block .label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.6rem;
}
.contact-block .email-link {
  font-size: clamp(1.4rem, 2.8vw, 2rem);
  font-weight: 300;
  color: #fff;
  letter-spacing: -0.02em;
  border-bottom: 1px solid var(--line-bright);
  padding-bottom: 6px;
  display: inline-block;
  transition: color 0.3s ease, border-color 0.3s ease;
}
.contact-block .email-link:hover {
  color: var(--blue-bright);
  border-color: var(--blue);
}

.socials {
  list-style: none;
  display: flex;
  flex-direction: column;
}
.socials li {
  border-top: 1px solid var(--line);
}
.socials li:last-child { border-bottom: 1px solid var(--line); }
.socials a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 0;
  color: var(--ink);
  font-size: 16px;
  transition: color 0.3s ease, padding 0.3s ease;
}
.socials a:hover { color: var(--blue-bright); padding-left: 12px; }
.socials a .arr { font-family: var(--font-mono); font-size: 13px; color: var(--ink-faint); }
.socials a:hover .arr { color: var(--blue-bright); }

/* Cursor / interactivity polish */
::selection {
  background: var(--blue);
  color: var(--void);
}