/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --yellow:   #F5B800;
  --blue:     #1A6FE0;
  --orange:   #F07020;
  --dark:     #0D0D0D;
  --dark-2:   #141414;
  --dark-3:   #1C1C1C;
  --light:    #F8F8F6;
  --muted:    #888;
  --border:   rgba(255,255,255,0.07);

  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --radius:    8px;
  --radius-lg: 16px;

  --max-w:  1100px;
  --nav-h:  56px;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--dark);
  color: var(--light);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

img {
  display: block;
  max-width: 100%;
}

strong {
  font-weight: 600;
  color: #fff;
}

/* ============================================================
   TYPOGRAPHY  — mobile-first sizes
   ============================================================ */
h1, h2, h3 {
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 700;
}

h2 { font-size: clamp(1.8rem, 8vw, 3.5rem); }
h3 { font-size: 1.1rem; font-weight: 600; }

p {
  color: #aaa;
  font-size: 0.95rem;
  line-height: 1.75;
}

.lead {
  font-size: 1.05rem;
  color: #ccc;
  line-height: 1.7;
}

.label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--yellow);
  margin-bottom: 1rem;
}

/* ============================================================
   LAYOUT
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Mobile-first: compact section padding */
.section {
  padding: 3.5rem 0;
}

.section-dark  { background: var(--dark); }
.section-dark2 { background: var(--dark-2); }

.section-header {
  max-width: 640px;
  margin-bottom: 2.5rem;
}

.section-header h2 { margin-bottom: 0.75rem; }
.section-desc { font-size: 1rem; color: #888; }

/* ============================================================
   NAVIGATION — mobile-first with hamburger
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: rgba(13,13,13,0);
  transition: background 0.3s ease, border-color 0.3s ease;
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(13,13,13,0.95);
  border-bottom-color: var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-inner {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 500;
  color: #fff;
  letter-spacing: -0.01em;
  transition: color 0.2s;
  z-index: 210;
  position: relative;
}

.nav-logo:hover { color: var(--yellow); }

/* Hamburger button — visible only on mobile */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius);
  z-index: 210;
  position: relative;
  -webkit-tap-highlight-color: transparent;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease, width 0.3s ease;
  transform-origin: center;
}

/* Open state */
.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.open span:nth-child(2) {
  opacity: 0;
  width: 0;
}
.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu overlay */
.nav-links {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  position: fixed;
  inset: 0;
  background: rgba(13,13,13,0.98);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 205;
  pointer-events: none;
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.nav-links.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.nav-links a {
  font-size: 1.3rem;
  color: #aaa;
  transition: color 0.2s;
  font-weight: 400;
}

.nav-links a:hover { color: #fff; }

.btn-nav {
  font-size: 1rem !important;
  font-weight: 500 !important;
  color: var(--yellow) !important;
  border: 1px solid rgba(245,184,0,0.35) !important;
  padding: 0.6rem 1.5rem;
  border-radius: var(--radius);
  transition: background 0.2s, border-color 0.2s !important;
}

.btn-nav:hover {
  background: rgba(245,184,0,0.1) !important;
  border-color: var(--yellow) !important;
}

/* ============================================================
   HERO — mobile-first
   ============================================================ */
.hero {
  position: relative;
  height: 100svh;
  min-height: 560px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-image-wrap {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  transform-origin: center;
  animation: heroZoom 18s ease-in-out infinite alternate;
}

@keyframes heroZoom {
  from { transform: scale(1.05); }
  to   { transform: scale(1);    }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    150deg,
    rgba(13,13,13,0.92) 0%,
    rgba(13,13,13,0.78) 55%,
    rgba(13,13,13,0.45) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: calc(var(--nav-h) + 2rem) 1.25rem 2rem;
}

.hero-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--yellow);
  margin-bottom: 1.25rem;
  opacity: 0;
  animation: fadeUp 0.7s 0.2s forwards;
}

.hero-name {
  font-size: clamp(2.8rem, 14vw, 7.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 0.95;
  color: #fff;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.7s 0.35s forwards;
}

.hero-sub {
  font-size: clamp(0.95rem, 3.5vw, 1.2rem);
  color: rgba(255,255,255,0.7);
  line-height: 1.6;
  margin-bottom: 2rem;
  max-width: 400px;
  opacity: 0;
  animation: fadeUp 0.7s 0.5s forwards;
}

.hero-cta {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  opacity: 0;
  animation: fadeUp 0.7s 0.65s forwards;
}

/* Scroll indicator */
.hero::after {
  content: '';
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 50px;
  background: linear-gradient(to bottom, transparent, rgba(255,255,255,0.35));
  animation: scrollPulse 2s ease-in-out infinite;
  z-index: 1;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: translateX(-50%) scaleY(1); }
  50%       { opacity: 1;   transform: translateX(-50%) scaleY(1.1); }
}

/* ============================================================
   BUTTONS — mobile: full-width stacked, desktop: inline
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 500;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
  font-family: var(--font-sans);
  width: 100%;
  text-align: center;
}

.btn-primary {
  background: var(--yellow);
  color: #0D0D0D;
}

.btn-primary:hover {
  background: #ffcc1a;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(245,184,0,0.3);
}

.btn-ghost {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.25);
}

.btn-ghost:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.5);
}

.btn-secondary {
  background: transparent;
  color: var(--yellow);
  border: 1px solid rgba(245,184,0,0.4);
}

.btn-secondary:hover {
  background: rgba(245,184,0,0.08);
  border-color: var(--yellow);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(245,184,0,0.15);
}

/* ============================================================
   ABOUT
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: start;
}

.about-left h2 {
  color: #fff;
  margin-top: 0.5rem;
}

.about-right p {
  margin-bottom: 1.25rem;
}

.about-right p:last-of-type {
  margin-bottom: 1.5rem;
}

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

.tag {
  display: inline-block;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: #888;
  border: 1px solid rgba(255,255,255,0.1);
  padding: 0.3rem 0.7rem;
  border-radius: 100px;
  transition: color 0.2s, border-color 0.2s;
  -webkit-tap-highlight-color: transparent;
}

.tag:hover {
  color: var(--yellow);
  border-color: rgba(245,184,0,0.4);
}

/* ============================================================
   PHILOSOPHY
   ============================================================ */
.section-accent {
  background: var(--dark-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.philosophy-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.875rem;
}

.phil-item {
  padding: 1.5rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.025);
  transition: border-color 0.2s, transform 0.2s;
}

.phil-item:hover {
  border-color: rgba(245,184,0,0.3);
  transform: translateY(-2px);
}

.phil-icon {
  font-size: 1.6rem;
  display: block;
  margin-bottom: 0.875rem;
}

.phil-item h3 {
  color: #fff;
  margin-bottom: 0.4rem;
  font-size: 1rem;
}

.phil-item p {
  font-size: 0.875rem;
  color: #666;
}

/* ============================================================
   BUILDING / LAB CARDS
   ============================================================ */
.building-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.building-card {
  padding: 2rem 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--dark-2);
  transition: border-color 0.2s, transform 0.25s;
  position: relative;
  overflow: hidden;
}

.building-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(245,184,0,0.04) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.3s;
}

.building-card:hover {
  border-color: rgba(245,184,0,0.25);
  transform: translateY(-3px);
}

.building-card:hover::before { opacity: 1; }

.card-icon {
  font-size: 1.75rem;
  margin-bottom: 1rem;
}

.building-card h3 {
  color: #fff;
  margin-bottom: 0.6rem;
  font-size: 1rem;
}

.building-card p {
  font-size: 0.875rem;
  color: #666;
  line-height: 1.6;
}

/* ============================================================
   PROJECTS SHOWCASE
   ============================================================ */
.project-showcase {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.project-showcase-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  align-items: center;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--dark);
  text-decoration: none;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
  position: relative;
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
}

.project-showcase-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26,111,224,0.05) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.3s;
}

.project-showcase-card:hover {
  border-color: rgba(26,111,224,0.35);
  transform: translateY(-3px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.4);
}

.project-showcase-card:hover::before { opacity: 1; }

/* On mobile, --reverse is same as normal (content first, image second) */
.project-showcase-card--reverse .project-showcase-content { order: 1; }
.project-showcase-card--reverse .project-showcase-image   { order: 2; }

.project-showcase-content {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  position: relative;
  z-index: 1;
}

.project-showcase-meta {
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

.project-logo {
  height: 32px;
  width: auto;
  object-fit: contain;
  border-radius: 6px;
}

.project-icon-large {
  font-size: 2rem;
  line-height: 1;
}

.project-status {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.2rem 0.55rem;
  border-radius: 100px;
  font-weight: 500;
}

.project-status--live {
  color: #4ade80;
  background: rgba(74,222,128,0.1);
  border: 1px solid rgba(74,222,128,0.25);
}

.project-status--wip {
  color: var(--yellow);
  background: rgba(245,184,0,0.1);
  border: 1px solid rgba(245,184,0,0.25);
}

.project-showcase-content h3 {
  color: #fff;
  font-size: 1.3rem;
  margin: 0;
}

.project-showcase-content p {
  font-size: 0.95rem;
  color: #777;
  line-height: 1.7;
  margin: 0;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.project-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--blue);
  opacity: 0.7;
  transition: opacity 0.2s;
  margin-top: 0.25rem;
}

.project-showcase-card:hover .project-link { opacity: 1; }

.project-showcase-image {
  position: relative;
  z-index: 1;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.06);
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  aspect-ratio: 16/10;
}

.project-showcase-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top left;
  display: block;
  transition: transform 0.6s ease;
}

.project-showcase-card:hover .project-showcase-image {
  box-shadow: 0 16px 48px rgba(0,0,0,0.6);
}

.project-showcase-card:hover .project-showcase-image img {
  transform: scale(1.03);
}

/* ============================================================
   PATREON CTA
   ============================================================ */
.patreon-cta {
  border: 1px solid rgba(245,184,0,0.2);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(245,184,0,0.06) 0%, rgba(26,111,224,0.05) 100%);
  padding: 1.5rem 1.25rem;
}

.patreon-cta-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.5rem;
}

.patreon-cta h3 {
  color: #fff;
  font-size: 1.15rem;
  margin-bottom: 0.4rem;
}

.patreon-cta p {
  font-size: 0.9rem;
  color: #777;
}

.patreon-cta .btn {
  width: 100%;
}

/* ============================================================
   FOOTER — mobile-first
   ============================================================ */
.footer {
  background: var(--dark-2);
  border-top: 1px solid var(--border);
  padding: 3rem 0 2rem;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.footer-logo {
  display: block;
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 500;
  color: #fff;
  margin-bottom: 0.6rem;
}

.footer-left p {
  font-size: 0.875rem;
  color: #555;
  line-height: 1.6;
}

.footer-links {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  align-items: flex-start;
}

.social-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: #666;
  transition: color 0.2s;
  -webkit-tap-highlight-color: transparent;
  min-height: 44px; /* touch target */
}

.social-link:hover { color: #fff; }
.social-link-patreon:hover { color: var(--yellow); }

.social-link svg {
  flex-shrink: 0;
  opacity: 0.7;
  transition: opacity 0.2s;
}

.social-link:hover svg { opacity: 1; }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.75rem;
  color: #444;
  line-height: 1.8;
}

.footer-bottom a {
  color: #555;
  transition: color 0.2s;
}

.footer-bottom a:hover { color: #aaa; }

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ============================================================
   RESPONSIVE — scale up from mobile base
   ============================================================ */

/* ── Small tablet ── ≥ 480px */
@media (min-width: 480px) {
  .hero-cta {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .hero-cta .btn {
    width: auto;
  }

  .philosophy-grid { grid-template-columns: repeat(2, 1fr); }

  .patreon-cta .btn {
    width: auto;
  }
}

/* ── Tablet ── ≥ 640px */
@media (min-width: 640px) {
  :root { --nav-h: 60px; }

  .container { padding: 0 2rem; }
  .nav-inner  { padding: 0 2rem; }
  .hero-content { padding: calc(var(--nav-h) + 2.5rem) 2rem 2.5rem; }

  .section { padding: 5rem 0; }

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

  h3 { font-size: 1.2rem; }
  p  { font-size: 1rem; }
  .lead { font-size: 1.1rem; }
  .label { font-size: 0.75rem; }

  .building-grid { grid-template-columns: repeat(2, 1fr); }

  .patreon-cta { padding: 2rem; }
  .patreon-cta-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .patreon-cta .btn {
    white-space: nowrap;
    flex-shrink: 0;
  }

  .footer-inner { flex-direction: row; justify-content: space-between; }
  .footer-links {
    flex-direction: column;
    align-items: flex-end;
    gap: 0.875rem;
  }
}

/* ── Desktop ── ≥ 900px */
@media (min-width: 900px) {

  /* Hide hamburger, show inline nav */
  .nav-toggle { display: none; }

  .nav-links {
    position: static;
    flex-direction: row;
    align-items: center;
    gap: 2rem;
    background: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    opacity: 1;
    pointer-events: auto;
    transform: none;
    transition: none;
    inset: auto;
  }

  .nav-links a { font-size: 0.9rem; }

  .btn-nav {
    font-size: 0.85rem !important;
    padding: 0.4rem 1rem;
  }

  .section { padding: 6rem 0; }
  .section-header { margin-bottom: 4rem; }

  .about-grid {
    grid-template-columns: 1fr 1.6fr;
    gap: 5rem;
  }

  .philosophy-grid { grid-template-columns: repeat(4, 1fr); }

  .building-grid { grid-template-columns: repeat(3, 1fr); }

  .project-showcase-card {
    grid-template-columns: 1fr 1.4fr;
    gap: 3rem;
    padding: 3rem;
  }

  .project-showcase-card--reverse {
    grid-template-columns: 1.4fr 1fr;
  }
  .project-showcase-card--reverse .project-showcase-content { order: 2; }
  .project-showcase-card--reverse .project-showcase-image   { order: 1; }

  .project-showcase-content h3 { font-size: 1.8rem; }

  .patreon-cta { padding: 2.5rem 3rem; }

  .hero-cta .btn { width: auto; }
}