/* ── variables ──────────────────────────────────────── */
:root {
  --black:   #000000;
  --white:   #ffffff;
  --muted:   #777777;
  --border:  #222222;
  --font:    'Inter', sans-serif;
  --mono:    'JetBrains Mono', monospace;
  --ease:    cubic-bezier(0.16, 1, 0.3, 1);
}

/* ── reset ──────────────────────────────────────────── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html { scroll-behavior: smooth; }

body {
  background: var(--black);
  color: var(--white);
  font-family: var(--font);
  line-height: 1.6;
  overflow-x: hidden;
  cursor: crosshair;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
::selection { background: var(--white); color: var(--black); }

/* ── background grid ────────────────────────────────── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.12;
  z-index: -1;
  pointer-events: none;
}

/* ── nav ────────────────────────────────────────────── */
nav {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  padding: 1.4rem 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border);
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(10px);
  z-index: 50;
}

.nav-logo {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: color 0.2s;
}

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

/* ── hero ───────────────────────────────────────────── */
#hero {
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 6vw;
  position: relative;
}

.tag {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.2rem;
}

#hero h1 {
  font-size: clamp(3.5rem, 9vw, 9rem);
  font-weight: 900;
  letter-spacing: -0.05em;
  line-height: 1;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.hero-sub {
  font-size: clamp(1rem, 1.8vw, 1.3rem);
  color: var(--muted);
  max-width: 600px;
  line-height: 1.7;
  margin-bottom: 2.5rem;
}

.hero-btns {
  display: flex;
  gap: 1rem;
}

.btn-solid {
  padding: 0.85rem 2rem;
  background: var(--white);
  color: var(--black);
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: 1px solid var(--white);
  transition: background 0.2s, color 0.2s;
}

.btn-solid:hover {
  background: transparent;
  color: var(--white);
}

.btn-ghost {
  padding: 0.85rem 2rem;
  background: transparent;
  color: var(--white);
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: 1px solid var(--border);
  transition: border-color 0.2s, background 0.2s, color 0.2s;
}

.btn-ghost:hover {
  border-color: var(--white);
  background: var(--white);
  color: var(--black);
}

.scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 6vw;
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.scroll-line {
  width: 40px;
  height: 1px;
  background: var(--muted);
  animation: line-pulse 2s ease-in-out infinite;
}

@keyframes line-pulse {
  0%, 100% { width: 30px; }
  50%       { width: 70px; background: var(--white); }
}

/* ── marquee ────────────────────────────────────────── */
.marquee-wrap {
  overflow: hidden;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 1.4rem 0;
  background: #050505;
  white-space: nowrap;
}

.marquee-track {
  display: inline-block;
  animation: marquee-move 22s linear infinite;
  font-family: var(--mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.04em;
}

@keyframes marquee-move {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ── sections (shared) ──────────────────────────────── */
section {
  padding: 8rem 6vw;
  border-bottom: 1px solid var(--border);
}

.two-col {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 5rem;
  align-items: start;
}

.col-label { position: sticky; top: 6rem; }

.section-num {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

.col-label h2 {
  font-size: 2.5rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.big-p {
  font-size: clamp(1.3rem, 2vw, 1.8rem);
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.muted-p {
  font-size: 1.05rem;
  color: var(--muted);
  line-height: 1.75;
  margin-bottom: 1rem;
}

/* ── work card ──────────────────────────────────────── */
.card {
  border: 1px solid var(--border);
  padding: 3rem;
  background: rgba(255,255,255,0.01);
  transition: border-color 0.25s var(--ease), background 0.25s;
}

.card:hover {
  border-color: #555;
  background: rgba(255,255,255,0.03);
}

.project-stack {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.card-meta {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding-bottom: 1.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.card h3 {
  font-size: 3rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.04em;
  margin-bottom: 1.5rem;
}

.card p {
  font-size: 1.05rem;
  color: var(--muted);
  line-height: 1.75;
  margin-bottom: 1rem;
}

/* ── skills ─────────────────────────────────────────── */
.skill-list { display: flex; flex-direction: column; }

.skill-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.8rem 0;
  border-bottom: 1px solid var(--border);
  transition: padding 0.25s var(--ease), background 0.25s;
}

.skill-list li:hover {
  padding-left: 1.5rem;
  padding-right: 1.5rem;
  background: var(--white);
  color: var(--black);
}

.skill-list li:hover .skill-tags { color: #333; }

.skill-lang {
  font-size: 2.2rem;
  font-weight: 900;
  letter-spacing: -0.03em;
}

.skill-tags {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-align: right;
}

/* ── blog / writing ─────────────────────────────────── */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.blog-card {
  border: 1px solid var(--border);
  padding: 2rem;
  background: rgba(255,255,255,0.01);
  transition: border-color 0.25s var(--ease), background 0.25s;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  position: relative;
}

.blog-card:hover {
  border-color: #444;
  background: rgba(255,255,255,0.03);
}

.blog-card.coming-soon { opacity: 0.7; }

.blog-tag {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: 1px solid var(--border);
  padding: 0.2rem 0.6rem;
  display: inline-block;
  width: fit-content;
}

.blog-card h4 {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.blog-card p {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.65;
  flex: 1;
}

.soon-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 0.5rem;
}

/* ── contact ────────────────────────────────────────── */
.contact-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  border: 1px solid var(--border);
  padding: 2rem;
  background: rgba(255,255,255,0.01);
  transition: border-color 0.25s var(--ease), background 0.25s, color 0.25s;
}

.contact-item:hover {
  border-color: var(--white);
  background: var(--white);
  color: var(--black);
}

.contact-item:hover .contact-label { color: #555; }

.contact-label {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.contact-val {
  font-size: 1.3rem;
  font-weight: 700;
}

/* ── footer ─────────────────────────────────────────── */
footer {
  padding: 2rem 6vw;
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ── scroll reveal ──────────────────────────────────── */
.fade-up {
  opacity: 0;
  transform: translateY(25px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── responsive ─────────────────────────────────────── */
@media (max-width: 900px) {
  .two-col {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .col-label { position: static; }
  .blog-grid { grid-template-columns: 1fr; }
  .contact-row { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  nav { padding: 1rem 1.5rem; }
  .nav-links { display: none; }
  section { padding: 5rem 5vw; }
  .card { padding: 1.8rem; }
  .skill-list li { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
  .skill-tags { text-align: left; }
  .card h3 { font-size: 2rem; }
}