/* ══════════════════════════════════════
   TOKENS
   ══════════════════════════════════════ */
:root {
  --bg: #0c0b09;
  --bg-card: #161412;
  --bg-card-hover: #1c1a16;
  --surface: #1e1c18;
  --border: rgba(255, 248, 235, 0.08);
  --border-hover: rgba(255, 248, 235, 0.16);
  --text: #f5f0e8;
  --text-secondary: #a09888;
  --accent: #d4845a;
  --accent-hover: #e09568;
  --accent-muted: rgba(212, 132, 90, 0.12);
  --serif: "DM Serif Display", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --sans: "Inter", "Avenir Next", system-ui, sans-serif;
  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --radius-xl: 36px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
}

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

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

ul {
  list-style: none;
}

/* ══════════════════════════════════════
   GRAIN OVERLAY
   ══════════════════════════════════════ */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

/* ══════════════════════════════════════
   LAYOUT
   ══════════════════════════════════════ */
.section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 100px 24px;
}

.section-header {
  margin-bottom: 56px;
}

.section-header h2 {
  max-width: 16ch;
}

/* ══════════════════════════════════════
   TYPOGRAPHY
   ══════════════════════════════════════ */
h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(3rem, 7vw, 5.5rem);
}

h1 em {
  color: var(--accent);
  font-style: italic;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
}

h3 {
  font-size: 1.35rem;
  line-height: 1.25;
}

.label {
  display: inline-block;
  margin-bottom: 16px;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--accent-muted);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* ══════════════════════════════════════
   HEADER
   ══════════════════════════════════════ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  padding: 16px 24px;
  transition: background 0.3s ease;
}

.site-header.scrolled {
  background: rgba(12, 11, 9, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  color: var(--bg);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.brand-name {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav a {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color 0.2s ease;
  letter-spacing: 0.03em;
}

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

.nav-cta {
  padding: 8px 20px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text) !important;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.nav-cta:hover {
  border-color: var(--accent);
  background: var(--accent-muted);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* ══════════════════════════════════════
   BUTTONS
   ══════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  transition: all 0.25s var(--ease);
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #c27548);
  color: #0c0b09;
  box-shadow: 0 4px 24px rgba(212, 132, 90, 0.25);
}

.btn-primary:hover {
  box-shadow: 0 8px 32px rgba(212, 132, 90, 0.35);
  transform: translateY(-1px);
}

.btn-ghost {
  border: 1px solid var(--border);
  color: var(--text);
  background: transparent;
}

.btn-ghost:hover {
  border-color: var(--accent);
  background: var(--accent-muted);
}

/* ══════════════════════════════════════
   HERO
   ══════════════════════════════════════ */
.hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 160px 24px 80px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: center;
}

.hero-content {
  padding-right: 24px;
}

.hero h1 {
  margin-bottom: 28px;
}

.hero-sub {
  max-width: 48ch;
  margin-bottom: 36px;
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* Hero visual */
.hero-visual {
  position: relative;
}

.hero-card {
  position: relative;
  aspect-ratio: 4/5;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background:
    radial-gradient(circle at 30% 20%, rgba(212, 132, 90, 0.15), transparent 50%),
    linear-gradient(160deg, #1a1714 0%, #2a241e 50%, #1a1714 100%);
  border: 1px solid var(--border);
}

.hero-card-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}

.hero-card-content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 32px;
}

.hero-card-mono {
  font-family: var(--serif);
  font-size: clamp(6rem, 14vw, 9rem);
  line-height: 0.85;
  color: rgba(245, 240, 232, 0.07);
  user-select: none;
}

.hero-card-info {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.hero-card-info span {
  padding: 8px 14px;
  border: 1px solid rgba(255, 248, 235, 0.1);
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-quote {
  position: absolute;
  bottom: -32px;
  left: -48px;
  max-width: 300px;
  padding: 24px;
  border-radius: var(--radius-md);
  background: var(--surface);
  border: 1px solid var(--border);
  backdrop-filter: blur(10px);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4);
}

.hero-quote p {
  margin-top: 12px;
  font-family: var(--serif);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text-secondary);
}

/* ══════════════════════════════════════
   ABOUT
   ══════════════════════════════════════ */
.about-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 40px;
}

.about-text p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 20px;
}

.about-text p:last-child {
  margin-bottom: 0;
}

.about-skills {
  padding: 32px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
}

.about-skills h3 {
  margin-bottom: 20px;
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.skill-tags span {
  padding: 10px 16px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text);
  transition: all 0.2s ease;
}

.skill-tags span:hover {
  border-color: var(--accent);
  background: var(--accent-muted);
  color: var(--accent);
}

/* ══════════════════════════════════════
   EDUCATION
   ══════════════════════════════════════ */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.edu-card {
  padding: 36px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: border-color 0.25s ease, transform 0.25s var(--ease);
}

.edu-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.edu-degree {
  display: inline-block;
  margin-bottom: 12px;
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.edu-card h3 {
  margin-bottom: 14px;
}

.edu-card p {
  color: var(--text-secondary);
  line-height: 1.7;
  font-size: 0.95rem;
}

/* ══════════════════════════════════════
   COLLABORATORS
   ══════════════════════════════════════ */
.collab {
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 24px 100px;
}

.collab-header {
  margin-bottom: 40px;
}

.collab-header h2 {
  max-width: 20ch;
}

.collab-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
}

.collab-item {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 36px 24px;
  background: var(--bg-card);
  transition: background 0.25s ease;
}

.collab-item:hover {
  background: var(--bg-card-hover);
}

.collab-name {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
  text-align: center;
  transition: color 0.25s ease;
}

.collab-item:hover .collab-name {
  color: var(--text);
}

/* ══════════════════════════════════════
   TIMELINE
   ══════════════════════════════════════ */
.timeline {
  position: relative;
}

.tl-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 40px;
}

.tl-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.tl-year {
  padding: 6px 16px;
  border-radius: 999px;
  background: var(--accent-muted);
  border: 1px solid rgba(212, 132, 90, 0.2);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.tl-line {
  flex: 1;
  width: 1px;
  background: var(--border);
  margin: 12px 0;
}

.tl-item:last-child .tl-line {
  background: linear-gradient(180deg, var(--border), transparent);
}

.tl-content {
  padding: 0 0 48px;
}

.tl-content h3 {
  margin-bottom: 12px;
}

.tl-content p {
  color: var(--text-secondary);
  line-height: 1.75;
  max-width: 56ch;
}

/* ══════════════════════════════════════
   STATS / IMPACT
   ══════════════════════════════════════ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.stat {
  padding: 32px 28px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: border-color 0.25s ease, transform 0.25s var(--ease);
}

.stat:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.stat-num {
  display: block;
  font-family: var(--serif);
  font-size: clamp(2.4rem, 4vw, 3.4rem);
  color: var(--accent);
  margin-bottom: 4px;
}

.stat-lbl {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.stat p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ══════════════════════════════════════
   SERVICES
   ══════════════════════════════════════ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.service-card {
  padding: 36px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: border-color 0.25s ease, transform 0.25s var(--ease);
}

.service-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.service-num {
  display: inline-block;
  margin-bottom: 20px;
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 0.08em;
}

.service-card h3 {
  margin-bottom: 12px;
}

.service-card p {
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ══════════════════════════════════════
   CONTACT
   ══════════════════════════════════════ */
.contact {
  padding-bottom: 60px;
}

.contact-inner {
  padding: 56px;
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 0% 100%, rgba(212, 132, 90, 0.08), transparent 40%),
    var(--bg-card);
  border: 1px solid var(--border);
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 48px;
  align-items: start;
}

.contact-text h2 {
  max-width: 18ch;
  margin-bottom: 16px;
}

.contact-text > p {
  color: var(--text-secondary);
  margin-bottom: 28px;
  max-width: 44ch;
  line-height: 1.75;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.contact-social {
  padding-top: 8px;
}

.contact-social-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 18px;
}

.social-links {
  display: flex;
  gap: 12px;
}

.social-links a {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.social-links a:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-muted);
  transform: translateY(-2px);
}

/* ══════════════════════════════════════
   FOOTER
   ══════════════════════════════════════ */
.footer {
  border-top: 1px solid var(--border);
  padding: 24px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.footer-copy {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

/* ══════════════════════════════════════
   ANIMATIONS
   ══════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.7s var(--ease),
    transform 0.7s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ══════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════ */
@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 130px;
    gap: 48px;
  }

  .hero-content {
    padding-right: 0;
  }

  .hero-visual {
    max-width: 480px;
  }

  .hero-quote {
    left: -16px;
    bottom: -24px;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

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

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

  .contact-inner {
    grid-template-columns: 1fr;
    padding: 40px;
  }
}

@media (max-width: 768px) {
  .nav {
    display: none;
  }

  .nav.is-open {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: 0;
    z-index: 99;
    background: rgba(12, 11, 9, 0.97);
    backdrop-filter: blur(20px);
    padding: 100px 32px 48px;
    gap: 24px;
    align-items: flex-start;
  }

  .nav.is-open a {
    font-size: 1.4rem;
    color: var(--text);
  }

  .nav.is-open .nav-cta {
    margin-top: 16px;
    padding: 14px 28px;
    font-size: 1rem;
  }

  .menu-toggle {
    display: flex;
    z-index: 100;
  }

  .menu-toggle.is-open span:first-child {
    transform: translateY(3.5px) rotate(45deg);
  }

  .menu-toggle.is-open span:last-child {
    transform: translateY(-3.5px) rotate(-45deg);
  }

  .section {
    padding: 64px 20px;
  }

  .hero {
    padding: 120px 20px 48px;
  }

  .hero-quote {
    position: static;
    max-width: none;
    margin-top: 20px;
  }

  .stats-grid,
  .services-grid,
  .edu-grid {
    grid-template-columns: 1fr;
  }

  .tl-item {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .tl-marker {
    flex-direction: row;
    gap: 12px;
  }

  .tl-line {
    height: 1px;
    width: auto;
    flex: 1;
    margin: 0;
  }

  .tl-content {
    padding: 0 0 36px;
  }

  .collab {
    padding: 40px 20px 64px;
  }

  .collab-grid {
    grid-template-columns: 1fr 1fr;
  }

  .contact-inner {
    padding: 28px;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .collab-grid {
    grid-template-columns: 1fr;
  }

  .brand-name {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

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