/* ============================================================
   RESET & BASE
   ============================================================ */

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

:root {
  --bg:           #0d0d0d;
  --bg-2:         #111111;
  --bg-3:         #161616;
  --border:       #1e1e1e;
  --border-hi:    #2e2e2e;
  --text:         #c8c8c0;
  --text-dim:     #888880;
  --text-muted:   #444440;
  --accent:       #c8922a;
  --accent-faint: rgba(200, 146, 42, 0.12);
  --font-mono:    'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  --font-sans:    'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  --max-width:    900px;
}

html {
  scroll-behavior: smooth;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  /* subtle analyst-grid texture */
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.016) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.016) 1px, transparent 1px);
  background-size: 48px 48px;
  background-attachment: fixed;
}

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

/* ============================================================
   LAYOUT
   ============================================================ */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* ============================================================
   HEADER / NAV
   ============================================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border);
  background: rgba(13, 13, 13, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
}

.logo {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.06em;
  transition: opacity 0.2s;
}

.logo:hover { opacity: 0.7; }

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

.site-nav a {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-dim);
  letter-spacing: 0.04em;
  transition: color 0.2s;
  position: relative;
}

.site-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.2s;
}

.site-nav a:hover { color: var(--text); }
.site-nav a:hover::after { width: 100%; }

/* hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 1px;
  background: var(--text-dim);
  transition: transform 0.2s, opacity 0.2s;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ============================================================
   HERO
   ============================================================ */

.hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border);
}

.hero-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  margin-bottom: 2rem;
}

.hero-name {
  font-family: var(--font-mono);
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 1rem;
}

.name-placeholder {
  color: var(--text-muted);
  font-style: italic;
}

.cursor {
  color: var(--accent);
  animation: blink 1.1s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

.hero-desc {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
  letter-spacing: 0.06em;
  margin-bottom: 3rem;
}

.hero-cta {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.cta-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.04em;
  border-bottom: 1px solid rgba(200, 146, 42, 0.35);
  padding-bottom: 1px;
  transition: opacity 0.2s;
}

.cta-link.secondary {
  color: var(--text-dim);
  border-bottom-color: var(--border-hi);
}

.cta-link:hover { opacity: 0.65; }

.arrow {
  display: inline-block;
  transition: transform 0.18s;
}

.cta-link:hover .arrow { transform: translateX(4px); }

/* ============================================================
   SECTIONS (shared)
   ============================================================ */

.section {
  padding: 6rem 0;
  border-bottom: 1px solid var(--border);
}

.section-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 400;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  margin-bottom: 3rem;
}

/* ============================================================
   ABOUT
   ============================================================ */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 240px;
  gap: 5rem;
  align-items: start;
}

.about-bio p {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text);
  max-width: 54ch;
}

.bio-placeholder {
  color: var(--text-dim) !important;
  font-style: italic;
}

.meta-block {
  margin-bottom: 1.75rem;
}

.meta-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}

.meta-value {
  font-size: 0.9rem;
  color: var(--text);
}

.meta-value.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.val-placeholder {
  color: var(--text-dim);
  font-style: italic;
}

/* ============================================================
   TAGS
   ============================================================ */

.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--accent);
  border: 1px solid rgba(200, 146, 42, 0.28);
  padding: 0.15rem 0.5rem;
  letter-spacing: 0.04em;
}

/* ============================================================
   PROJECTS
   ============================================================ */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(255px, 1fr));
  gap: 1px;
  border: 1px solid var(--border);
  background: var(--border);
}

.project-card {
  background: var(--bg-2);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  transition: background 0.2s;
}

.project-card:hover {
  background: var(--bg-3);
}

.card-category {
  font-family: var(--font-mono);
  font-size: 0.63rem;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.card-title {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1.3;
}

.card-desc {
  font-size: 0.84rem;
  color: var(--text-dim);
  line-height: 1.7;
  flex: 1;
}

.card-footer {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.5rem;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.card-link {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
  transition: color 0.2s;
}

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

/* ============================================================
   WRITING
   ============================================================ */

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

.writing-item {
  display: grid;
  grid-template-columns: 220px 1fr;
  align-items: baseline;
  gap: 2rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--border);
}

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

.writing-meta {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.writing-date {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.writing-venue {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.writing-title {
  font-size: 0.95rem;
  color: var(--text);
  line-height: 1.45;
  transition: color 0.2s;
}

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

/* ============================================================
   CONTACT
   ============================================================ */

.contact-row {
  display: flex;
  gap: 4rem;
  flex-wrap: wrap;
}

.contact-link {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  transition: opacity 0.2s;
}

.contact-link:hover { opacity: 0.65; }

.contact-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.contact-value {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
}

/* ============================================================
   FOOTER
   ============================================================ */

.site-footer {
  padding: 1.5rem 0;
}

.site-footer .container {
  display: flex;
  justify-content: flex-end;
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

/* ============================================================
   FADE-IN (intersection observer)
   ============================================================ */

.fade-in {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: none;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 680px) {
  .section { padding: 4rem 0; }

  /* mobile nav */
  .site-nav {
    display: none;
    position: absolute;
    top: 52px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
  }

  .site-nav.open { display: flex; }

  .site-nav a {
    padding: 0.85rem 2rem;
    border-bottom: 1px solid var(--border);
  }

  .site-nav a::after { display: none; }

  .nav-toggle { display: flex; }

  /* layout adjustments */
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .writing-item {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }

  .contact-row { gap: 2rem; }

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