:root {
  --bg: oklch(11% 0.006 40);
  --fg: oklch(94% 0.005 40);
  --accent: oklch(78% 0.15 70);
  --accent-hover: oklch(85% 0.15 70);
  --mono: 'JetBrains Mono', monospace;
  --sans: 'Space Grotesk', sans-serif;
  --body: system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
}

a { color: var(--accent); }
a:hover { color: var(--accent-hover); }

.page {
  width: 100%;
  background: var(--bg);
  color: var(--fg);
}

/* Nav */

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 38px 64px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  flex-wrap: wrap;
  gap: 16px;
}

.nav__brand {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 2px;
  font-weight: 600;
  color: var(--fg);
  text-decoration: none;
}

.nav__brand:hover {
  color: var(--accent);
}

.nav__links {
  display: flex;
  gap: 36px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 1px;
  flex-wrap: wrap;
}

.nav__links a {
  text-decoration: none;
  color: rgba(255, 255, 255, 0.6);
}

.nav__links a:hover {
  color: #fff;
}

/* Buttons */

.btn {
  font-family: var(--mono);
  font-size: 13px;
  padding: 16px 28px;
  border-radius: 2px;
  text-decoration: none;
  letter-spacing: 0.5px;
  display: inline-block;
}

.btn--solid {
  background: var(--accent);
  color: oklch(12% 0.01 40);
  font-weight: 600;
}

.btn--solid:hover { opacity: 0.85; }

.btn--outline {
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: var(--fg);
}

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

.btn--link {
  padding: 16px 4px;
  color: var(--fg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 0;
}

.btn--link:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Hero */

.hero {
  padding: 140px 64px 150px;
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 60px;
}

.hero__title {
  font-size: 68px;
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -2px;
  margin: 0 0 36px;
}

.hero__lead {
  max-width: 560px;
  font-size: 19px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.65);
  font-family: var(--body);
  text-wrap: pretty;
  margin: 0;
}

.hero__actions {
  display: flex;
  gap: 18px;
  margin-top: 44px;
  flex-wrap: wrap;
}

.facts {
  display: flex;
  flex-direction: column;
  padding-top: 14px;
}

.facts__row {
  padding: 18px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-family: var(--mono);
}

.facts__row--bottom {
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.facts__label {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.4);
  letter-spacing: 1px;
  margin-bottom: 6px;
}

.facts__value {
  font-size: 15px;
}

/* Sections */

.section {
  padding: 0 64px 150px;
}

.section__kicker {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 1px;
  color: var(--accent);
  margin-bottom: 48px;
}

.section--about {
  display: grid;
  grid-template-columns: 280px 1fr;
}

.section__number {
  font-family: var(--mono);
  font-size: 180px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.05);
  line-height: 1;
}

.about__copy {
  max-width: 720px;
  font-size: 23px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.85);
  font-family: var(--body);
  text-wrap: pretty;
  margin: 0;
}

.section--exp {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 100px;
}

.exp-row {
  display: grid;
  grid-template-columns: 200px 1fr 1.3fr;
  gap: 32px;
  padding: 36px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.exp-row--last {
  border-bottom: none;
}

.exp-row__date {
  font-family: var(--mono);
  font-size: 16px;
  color: rgba(255, 255, 255, 0.5);
}

.exp-row__role {
  font-size: 24px;
  font-weight: 600;
}

.exp-row__role span {
  display: block;
  font-size: 14px;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.5);
  margin-top: 4px;
  font-family: var(--mono);
}

.exp-row__desc {
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.65);
  font-family: var(--body);
}

.section--skills {
  padding-top: 100px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 40px;
}

.skill-col__title {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 1px;
  color: rgba(255, 255, 255, 0.45);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--accent);
}

.skill-col__items {
  font-size: 15px;
  line-height: 2;
  color: rgba(255, 255, 255, 0.75);
}

/* Contact */

.section--contact {
  padding: 150px 64px 70px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

.contact__title {
  font-size: 64px;
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -2px;
  margin: 0 0 44px;
}

.contact__title span {
  color: var(--accent);
}

.contact__email {
  font-size: 32px;
  font-weight: 600;
  color: #fff;
  text-decoration: none;
  display: inline-block;
  margin-bottom: 36px;
}

.contact__email:hover {
  color: var(--accent);
}

.contact__actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 70px;
  flex-wrap: wrap;
}

.contact__footer {
  display: flex;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-family: var(--mono);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.35);
  gap: 12px;
  flex-wrap: wrap;
}

/* Back to top */

.back-to-top {
  position: fixed;
  right: 28px;
  bottom: 28px;
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 50%;
  background: var(--accent);
  color: oklch(12% 0.01 40);
  font-family: var(--mono);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease, background 0.2s ease;
  z-index: 10;
}

.back-to-top--visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--accent-hover);
}

/* Responsive */

@media (max-width: 900px) {
  .nav, .hero, .section { padding-left: 28px; padding-right: 28px; }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 90px;
    padding-bottom: 90px;
  }

  .hero__title { font-size: 44px; }

  .section--about {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .section__number { font-size: 90px; }

  .exp-row {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px 24px;
  }

  .contact__title { font-size: 40px; }

  .contact__email { font-size: 22px; word-break: break-word; }

  .contact__footer { justify-content: center; text-align: center; }
}

@media (max-width: 520px) {
  .skills-grid { grid-template-columns: 1fr; }
}