:root {
  --bg: #141824;
  --bg-panel: #1A1F2C;
  --bg-panel-2: #1F2534;
  --border: #2A3040;
  --border-soft: #232838;
  --text: #E9E7E0;
  --text-dim: #8A90A3;
  --text-faint: #5B6072;
  --accent: #D9A15B;
  --accent-2: #D9A15B;
  --accent-soft: #D9A15B33;
  --nav-bg: rgba(20, 24, 36, 0.85);
  --grid-opacity: 0.35;
  --btn-primary-text: #191307;
  --eyebrow-color: var(--accent);
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
  --max-w: 1120px;
}

[data-theme="light"] {
  --bg: #FBF0DE;
  --bg-panel: #FFFCF6;
  --bg-panel-2: #F7E1BE;
  --border: #E9CB9A;
  --border-soft: #F1DDB6;
  --text: #33202B;
  --text-dim: #705A63;
  --text-faint: #A9907F;
  --accent: #FF5A47;
  --accent-2: #FFB627;
  --accent-soft: #FF5A4733;
  --nav-bg: rgba(251, 240, 222, 0.88);
  --grid-opacity: 0.55;
  --btn-primary-text: #FFF8EE;
  --eyebrow-color: #B8770A;
  --font-display: 'Fraunces', serif;
}

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

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background 0.2s ease, color 0.2s ease;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.grid-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(var(--border-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-soft) 1px, transparent 1px);
  background-size: 56px 56px;
  opacity: var(--grid-opacity);
  mask-image: linear-gradient(to bottom, black, black 40%, transparent 92%);
}

/* ============ NAV ============ */
.nav {
  position: sticky;
  top: 16px;
  z-index: 10;
  background: transparent;
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.nav-mark {
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: 0.08em;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  padding: 11px 14px;
  border-radius: 999px;
  font-size: 0.8rem;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}
.nav-pill {
  display: flex;
  align-items: center;
  gap: 2px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}
.nav-pill a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
  letter-spacing: 0.02em;
  padding: 8px 16px;
  border-radius: 999px;
  transition: background 0.15s ease, color 0.15s ease;
}
.nav-pill a:hover, .nav-pill a:focus-visible { background: var(--bg-panel-2); color: var(--text); }

.icon-pill {
  display: flex;
  align-items: center;
  gap: 2px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}
.icon-pill a, .icon-pill button {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: none;
  background: none;
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}
.icon-pill a:hover, .icon-pill a:focus-visible,
.icon-pill button:hover, .icon-pill button:focus-visible {
  background: var(--bg-panel-2);
  color: var(--accent);
}

/* tooltip */
.icon-pill a[data-tooltip]::after, .icon-pill button[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(-4px);
  background: var(--text);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.02em;
  padding: 5px 9px;
  border-radius: 4px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease, transform 0.15s ease;
  z-index: 20;
}
.icon-pill a[data-tooltip]:hover::after, .icon-pill a[data-tooltip]:focus-visible::after,
.icon-pill button[data-tooltip]:hover::after, .icon-pill button[data-tooltip]:focus-visible::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* mobile hamburger + dropdown */
.mobile-menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-panel);
  color: var(--text);
  cursor: pointer;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}
.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 2px;
  max-width: var(--max-w);
  margin: 10px auto 0;
  padding: 10px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}
.mobile-menu.is-open { display: flex; }
.mobile-menu a {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-dim);
  padding: 12px 14px;
  border-radius: 10px;
  transition: background 0.15s ease, color 0.15s ease;
}
.mobile-menu a:hover, .mobile-menu a:focus-visible { background: var(--bg-panel-2); color: var(--text); }

/* ============ HERO ============ */
.hero {
  position: relative;
  z-index: 1;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 120px 24px 80px;
}
.hero-inner { max-width: 720px; }
.hero-photo {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--bg-panel);
  outline: 2px solid var(--border);
  margin-bottom: 28px;
  display: block;
}
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--eyebrow-color);
  letter-spacing: 0.03em;
  margin-bottom: 20px;
}
.hero-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin-bottom: 22px;
}
.hero-sub {
  font-size: 1.08rem;
  color: var(--text-dim);
  max-width: 560px;
  margin-bottom: 36px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 13px 24px;
  border-radius: 3px;
  border: 1px solid transparent;
  transition: transform 0.15s ease, border-color 0.15s ease, background 0.15s ease;
  display: inline-block;
}
.btn-primary {
  background: var(--accent);
  color: var(--btn-primary-text);
  font-weight: 600;
}
.btn-primary:hover, .btn-primary:focus-visible { transform: translateY(-1px); }
.btn-ghost {
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover, .btn-ghost:focus-visible { border-color: var(--accent); color: var(--accent); }

/* ============ DIVIDER ============ */
.divider {
  position: relative;
  z-index: 1;
  max-width: var(--max-w);
  margin: 0 auto;
  height: 1px;
  background: var(--border);
}

/* ============ SECTION HEAD ============ */
.section-head {
  max-width: 620px;
  margin-bottom: 44px;
}
.section-head h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 12px;
}
.section-note { color: var(--text-dim); font-size: 0.98rem; }

/* ============ PROJECTS ============ */
.projects {
  position: relative;
  z-index: 1;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 72px 24px;
}
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}
.card {
  position: relative;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card-media {
  aspect-ratio: 16 / 10;
  background: var(--bg-panel-2);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.card-body { padding: 22px; }
.card-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--accent);
  letter-spacing: 0.04em;
  margin-bottom: 10px;
  text-transform: uppercase;
}
.card-body h3 {
  font-family: var(--font-display);
  font-size: 1.22rem;
  font-weight: 600;
  margin-bottom: 10px;
}
.card-body p {
  color: var(--text-dim);
  font-size: 0.92rem;
  margin-bottom: 16px;
}
.card-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}
.card-tech li {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-dim);
  border: 1px solid var(--border);
  padding: 4px 9px;
  border-radius: 2px;
}
.card-links {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  border-top: 1px solid var(--border-soft);
  padding-top: 14px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
}
.card-link { color: var(--text); transition: color 0.15s ease; }
.card-link:hover, .card-link:focus-visible { color: var(--accent); }

/* ============ SKILLS ============ */
.skills {
  position: relative;
  z-index: 1;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 72px 24px;
}
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 32px;
}
.skill-col h4 {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  letter-spacing: 0.03em;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.skill-col li {
  font-size: 0.92rem;
  color: var(--text-dim);
  padding: 6px 0;
}

/* ============ EXPERIENCE ============ */
.experience {
  position: relative;
  z-index: 1;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 72px 24px;
}
.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-left: 1px solid var(--border);
  padding-left: 28px;
  max-width: 680px;
}
.timeline-item {
  position: relative;
  padding-bottom: 40px;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: -33px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
}
.timeline-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: baseline;
  margin-bottom: 8px;
}
.timeline-role {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.08rem;
}
.timeline-org {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-faint);
}
.timeline-item p { color: var(--text-dim); font-size: 0.92rem; }

/* ============ CONTACT ============ */
.contact {
  position: relative;
  z-index: 1;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 96px 24px 120px;
  text-align: center;
}
.contact-inner h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 600;
  margin-bottom: 14px;
}
.contact-inner > p {
  color: var(--text-dim);
  margin-bottom: 36px;
}
.contact-links {
  display: flex;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.88rem;
}
.contact-links a {
  border-bottom: 1px solid var(--border);
  padding-bottom: 3px;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.contact-links a:hover, .contact-links a:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
}

/* ============ FOOTER ============ */
.footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  padding: 24px;
  max-width: var(--max-w);
  margin: 0 auto;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-faint);
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
}
.footer-quote {
  font-style: italic;
  color: var(--text-faint);
}

/* ============ FOCUS STATES ============ */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 640px) {
  .nav-pill { display: none; }
  .mobile-menu-toggle { display: flex; }
  .hero { padding: 90px 20px 60px; }
}