/* ── Theme ─────────────────────────────────────────────── */
:root {
  --bg: #0A0A0A;
  --text: #F5F5F7;
  --muted: #86868B;
  --accent: #00F2FE;
  --border: rgba(134, 134, 139, 0.25);
  --hover-bg: #111111;
  --font-sans: system-ui, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", ui-monospace, monospace;
  --section-pad: clamp(3rem, 8vw, 7rem);
  --max-width: 1280px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

ul, ol {
  list-style: none;
}

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

/* ── Utilities ─────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 3rem);
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 200;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.skip-link:focus {
  top: 1rem;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 2.5rem;
}

/* ── Reveal Animation ──────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* ── Header ────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 1.25rem;
}

.site-id {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
  transition: opacity 0.2s ease;
}

.site-id:hover {
  opacity: 0.75;
}

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

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.25s ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--text);
}

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ── Hero ──────────────────────────────────────────────── */
.hero {
  padding-block: clamp(5rem, 14vw, 10rem) var(--section-pad);
  border-bottom: 1px solid var(--border);
}

.hero-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: clamp(3rem, 12vw, 9rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  color: var(--muted);
  max-width: 52ch;
  margin-bottom: 2rem;
}

.hero-links {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.hero-links a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  padding-bottom: 2px;
  transition: color 0.25s ease, border-color 0.25s ease;
}

.hero-links a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.hero-divider {
  color: var(--muted);
  font-family: var(--font-mono);
}

.hero-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.08em;
}

/* ── Culture Grid ──────────────────────────────────────── */
.culture {
  padding-block: var(--section-pad);
  border-bottom: 1px solid var(--border);
}

.culture-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 0.8fr;
  border: 1px solid var(--border);
}

.culture-cell {
  padding: clamp(1.5rem, 3vw, 2.5rem);
  border-right: 1px solid var(--border);
}

.culture-cell:last-child {
  border-right: none;
}

.culture-title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
}

.culture-cell p {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.75;
}

/* ── Achievements ──────────────────────────────────────── */
.work {
  padding-block: var(--section-pad);
}

.achievements {
  margin-bottom: var(--section-pad);
  padding-bottom: var(--section-pad);
  border-bottom: 1px solid var(--border);
}

.achievement-list {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.achievement-list li {
  display: flex;
  align-items: baseline;
  gap: 2rem;
}

.achievement-index {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  flex-shrink: 0;
  width: 2rem;
}

.achievement-text {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  line-height: 1.4;
}

.achievement-text strong {
  color: var(--text);
}

/* ── Projects ──────────────────────────────────────────── */
.projects {
  margin-bottom: var(--section-pad);
  padding-bottom: var(--section-pad);
  border-bottom: 1px solid var(--border);
}

.project-list {
  display: flex;
  flex-direction: column;
}

.project-row {
  padding: clamp(1.5rem, 3vw, 2.5rem) clamp(1rem, 2vw, 1.5rem);
  border-bottom: 1px solid var(--border);
  border-left: 3px solid transparent;
  transition: background-color 0.35s ease, border-color 0.35s ease;
}

.project-row:first-child {
  border-top: 1px solid var(--border);
}

.project-row:hover {
  background-color: var(--hover-bg);
  border-left-color: var(--accent);
}

.project-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.project-title {
  font-size: clamp(1.1rem, 2.5vw, 1.6rem);
  font-weight: 700;
  line-height: 1.3;
  transition: transform 0.35s ease;
}

.project-row:hover .project-title {
  transform: translateX(8px);
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  flex-shrink: 0;
}

.project-tags li {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 0.25rem 0.6rem;
}

.project-desc {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.75;
  max-width: 80ch;
  transition: color 0.35s ease;
}

.project-row:hover .project-desc {
  color: #a1a1a6;
}

/* ── Stack Matrix ──────────────────────────────────────── */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--border);
}

.stack-col {
  padding: clamp(1.25rem, 2.5vw, 2rem);
  border-right: 1px solid var(--border);
}

.stack-col:last-child {
  border-right: none;
}

.stack-heading {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.stack-col ul {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.stack-col li {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.5;
}

/* ── Contact Footer ──────────────────────────────────────── */
.contact {
  padding-block: var(--section-pad);
  border-top: 1px solid var(--border);
}

.contact-title {
  font-size: clamp(2rem, 8vw, 5.5rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  margin-bottom: 2rem;
}

.contact-email {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: clamp(0.9rem, 2vw, 1.2rem);
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 4px;
  margin-bottom: 3rem;
  user-select: all;
  transition: opacity 0.25s ease;
}

.contact-email:hover {
  opacity: 0.75;
}

.contact-copy {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.08em;
}

/* ── Responsive ────────────────────────────────────────── */
@media (max-width: 768px) {
  .culture-grid {
    grid-template-columns: 1fr;
  }

  .culture-cell {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .culture-cell:last-child {
    border-bottom: none;
  }

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

  .stack-col {
    border-bottom: 1px solid var(--border);
  }

  .stack-col:nth-child(2) {
    border-right: none;
  }

  .stack-col:nth-child(3),
  .stack-col:nth-child(4) {
    border-bottom: none;
  }

  .stack-col:nth-child(3) {
    border-right: 1px solid var(--border);
  }

  .achievement-list li {
    gap: 1.25rem;
  }
}

@media (max-width: 480px) {
  .header-inner {
    flex-wrap: wrap;
    gap: 1rem;
  }

  .nav-links {
    gap: 1.25rem;
  }

  .hero-title {
    font-size: clamp(2.5rem, 14vw, 3.5rem);
  }

  .project-header {
    flex-direction: column;
    gap: 1rem;
  }

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

  .stack-col {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .stack-col:last-child {
    border-bottom: none;
  }
}