/* ============================================
   Hello, World. — Editorial Brutalist Minimalism
   ============================================ */

:root {
  --bg: #0e0d0b;
  --bg-elevated: #16140f;
  --fg: #e8e3d6;
  --fg-muted: #7a7568;
  --accent: #d9f26a;
  --accent-dim: #a8c04a;
  --border: #2a2820;
  --serif: 'Fraunces', Georgia, serif;
  --mono: 'JetBrains Mono', monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--serif);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Grain overlay */
.grain {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9000;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 250 250' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' /%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' /%3E%3C/svg%3E");
}

.noise {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9001;
  background: radial-gradient(circle at 50% 0%, transparent 40%, rgba(0,0,0,0.4) 100%);
}

/* ============================================
   NAV
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 22px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 1000;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--fg-muted);
  mix-blend-mode: difference;
}

.nav-mark {
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-mark span {
  color: var(--fg);
  font-weight: 500;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-item {
  letter-spacing: 0.04em;
}

.nav-time {
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.05em;
}

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 0 40px;
  overflow: hidden;
}

.hero-bg-image {
  position: absolute;
  top: 0;
  right: 0;
  width: 55%;
  height: 100%;
  background-image: url('images/workspace.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.18;
  filter: grayscale(1) contrast(1.2);
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    var(--bg) 0%,
    rgba(14, 13, 11, 0.6) 40%,
    transparent 70%
  );
}

.hero-content {
  position: relative;
  z-index: 10;
  max-width: 800px;
  padding-top: 60px;
}

.hero-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 32px;
}

.hero-title {
  font-family: var(--serif);
  font-size: clamp(80px, 16vw, 220px);
  font-weight: 200;
  line-height: 0.88;
  letter-spacing: -0.04em;
  font-variation-settings: "opsz" 144;
  margin-bottom: 40px;
}

.word {
  display: inline-block;
}

.word.accent {
  font-style: italic;
  font-weight: 300;
  color: var(--accent);
  font-variation-settings: "opsz" 144;
}

.hero-sub {
  font-family: var(--serif);
  font-size: clamp(18px, 2.2vw, 24px);
  font-weight: 300;
  line-height: 1.6;
  color: var(--fg-muted);
  max-width: 540px;
  margin-bottom: 48px;
  font-style: italic;
}

.hero-cta-row {
  display: flex;
  gap: 20px;
  align-items: center;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 28px;
  background: var(--accent);
  color: var(--bg);
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform 0.3s ease, background 0.3s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  background: #e8ff7a;
}

.btn-primary svg {
  transition: transform 0.3s ease;
}

.btn-primary:hover svg {
  transform: translateX(4px);
}

.btn-ghost {
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--fg-muted);
  text-decoration: none;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  transition: color 0.3s, border-color 0.3s;
}

.btn-ghost:hover {
  color: var(--fg);
  border-color: var(--fg);
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 40px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--fg-muted);
  z-index: 10;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: var(--fg-muted);
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: -40px;
  left: 0;
  width: 1px;
  height: 40px;
  background: var(--accent);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0% { top: -40px; }
  50% { top: 40px; }
  100% { top: 40px; }
}

/* ============================================
   REVEAL ANIMATION
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  animation: revealUp 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: var(--d, 0s);
}

@keyframes revealUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   CODE SECTION
   ============================================ */
.code-section {
  padding: 120px 0 100px;
  background: var(--bg);
  overflow: hidden;
  border-top: 1px solid var(--border);
}

.section-label {
  display: flex;
  align-items: baseline;
  gap: 20px;
  padding: 0 40px;
  margin-bottom: 60px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.label-num {
  color: var(--accent);
  font-weight: 500;
}

.label-text {
  color: var(--fg-muted);
}

.code-marquee {
  overflow: hidden;
  position: relative;
  width: 100%;
}

.marquee-track {
  display: flex;
  gap: 32px;
  animation: marquee 40s linear infinite;
  padding: 0 40px;
  width: max-content;
}

.marquee-track:hover {
  animation-play-state: paused;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.code-block {
  flex-shrink: 0;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  padding: 28px 32px;
  min-width: 380px;
}

.code-lang {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

.code-block pre {
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.7;
  color: var(--fg);
  white-space: pre;
}

.c-comment { color: var(--fg-muted); }
.c-key { color: var(--accent); }
.c-str { color: #c9b88e; }

/* ============================================
   STORY SECTION
   ============================================ */
.story-section {
  padding: 120px 40px 140px;
  border-top: 1px solid var(--border);
}

.story-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  max-width: 1300px;
}

.story-headline {
  font-family: var(--serif);
  font-size: clamp(48px, 6vw, 84px);
  font-weight: 200;
  line-height: 1;
  letter-spacing: -0.03em;
  font-variation-settings: "opsz" 144;
}

.story-accent {
  font-style: italic;
  color: var(--accent);
  font-weight: 300;
}

.story-right {
  padding-top: 8px;
}

.story-body {
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.75;
  color: var(--fg-muted);
  margin-bottom: 28px;
  font-weight: 300;
}

.story-body em {
  color: var(--fg);
  font-style: italic;
}

.story-body:last-child {
  color: var(--fg);
  font-size: 21px;
  font-style: italic;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: 80px 40px 40px;
  border-top: 1px solid var(--border);
}

.footer-line {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), transparent);
  margin-bottom: 60px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 80px;
}

.footer-title {
  font-family: var(--serif);
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 200;
  letter-spacing: -0.03em;
  line-height: 1;
  font-variation-settings: "opsz" 144;
}

.footer-sub {
  font-family: var(--serif);
  font-size: 18px;
  font-style: italic;
  color: var(--fg-muted);
  margin-top: 16px;
  font-weight: 300;
}

.footer-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-muted);
  text-decoration: none;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  transition: color 0.3s, border-color 0.3s;
}

.footer-cta:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.footer-meta {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--fg-muted);
  padding-top: 40px;
  border-top: 1px solid var(--border);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
  .nav {
    padding: 18px 24px;
  }
  .nav-links {
    display: none;
  }
  .hero {
    padding: 0 24px;
  }
  .hero-bg-image {
    width: 100%;
    opacity: 0.1;
  }
  .hero-content {
    padding-top: 100px;
  }
  .story-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .section-label {
    padding: 0 24px;
  }
  .code-section {
    padding: 80px 0 60px;
  }
  .story-section {
    padding: 80px 24px 100px;
  }
  .footer {
    padding: 60px 24px 32px;
  }
  .footer-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 32px;
  }
  .footer-meta {
    flex-direction: column;
    gap: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    animation: none;
    opacity: 1;
    transform: none;
  }
  .marquee-track {
    animation: none;
  }
  .scroll-line::after {
    animation: none;
  }
}