:root {
  --color-bg: #FFFFFF;
  --color-surface: #F7F7F5;
  --color-text: #1A1A1A;
  --color-text-muted: #6B6B6B;
  --color-accent: #1A1A1A;
  --color-border: #E5E5E5;

  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-base: 16px;
  --line-height: 1.65;

  --container-max: 1100px;
  --container-pad: 1.5rem;
  --header-h: 64px;

  --radius: 6px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 8px 24px rgba(0,0,0,.06);

  --t: 200ms ease;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a { color: inherit; text-decoration: none; }
a:hover { color: var(--color-text-muted); }

ul, ol { margin: 0; padding: 0; list-style: none; }

h1, h2, h3 { margin: 0; font-weight: 600; letter-spacing: -.01em; }
p { margin: 0; }

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: rgba(255,255,255,.85);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid transparent;
  z-index: 50;
  transition: border-color var(--t), box-shadow var(--t);
}
.site-header.is-scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.nav {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav-brand {
  font-weight: 700;
  letter-spacing: .08em;
  font-size: 1rem;
}

.nav-links {
  display: none;
  gap: 1.75rem;
  align-items: center;
}
.nav-link {
  font-size: .92rem;
  color: var(--color-text-muted);
  transition: color var(--t);
}
.nav-link:hover,
.nav-link.is-active { color: var(--color-text); }

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding: .45rem .85rem .45rem .7rem;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  border-radius: 999px;
  cursor: pointer;
  font: inherit;
  color: var(--color-text);
  transition: border-color var(--t), background var(--t);
}
.nav-toggle:hover { border-color: var(--color-text); }
.nav-toggle-icon {
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
  width: 18px;
  height: 12px;
}
.nav-toggle-icon span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-text);
  border-radius: 1px;
  transition: transform var(--t), opacity var(--t);
}
.nav-toggle-text {
  font-size: .9rem;
  font-weight: 500;
  letter-spacing: .01em;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* ---------- Sections ---------- */
main { padding-top: var(--header-h); }

/* Push anchor-scroll target down so titles clear the fixed header */
section[id] { scroll-margin-top: calc(var(--header-h) + 0.5rem); }

.section {
  padding: 5rem 0;
}
.section-alt {
  background: var(--color-surface);
}
.section-title {
  font-size: 1.75rem;
  margin-bottom: 2.5rem;
  position: relative;
  padding-bottom: .75rem;
}
.section-title::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 40px; height: 2px;
  background: var(--color-text);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .75rem 1.4rem;
  border-radius: var(--radius);
  font-weight: 500;
  font-size: .95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--t), color var(--t), border-color var(--t), transform var(--t);
}
.btn-primary {
  background: var(--color-text);
  color: #fff;
}
.btn-primary:hover {
  background: #000;
  color: #fff;
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-ghost:hover {
  border-color: var(--color-text);
  color: var(--color-text);
}

/* ---------- Hero ---------- */
.hero {
  padding: 4rem 0 5rem;
  min-height: calc(100vh - var(--header-h));
  display: flex;
  align-items: center;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}
.hero-eyebrow {
  color: var(--color-text-muted);
  font-size: .9rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.hero-title {
  font-size: clamp(2.25rem, 6vw, 3.75rem);
  line-height: 1.05;
  margin-bottom: 1rem;
}
.hero-tagline {
  color: var(--color-text-muted);
  font-size: 1.125rem;
  max-width: 32ch;
  margin-bottom: 2rem;
}
.hero-cta {
  display: flex;
  gap: .75rem;
  flex-wrap: wrap;
}
.hero-photo {
  position: relative;
  max-width: 420px;
  justify-self: start;
}
.hero-photo img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  aspect-ratio: 2 / 3;
  object-fit: cover;
}

/* ---------- About ---------- */
.about-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}
@media (max-width: 767px) {
  /* On mobile, surface the text first so the section title is what greets
     the user on anchor scroll, and so the two portraits don't stack
     back-to-back across hero -> about. */
  .about-content,
  .contact-content { order: 1; }
  .about-photo,
  .contact-photo   { order: 2; }
}
.about-photo {
  max-width: 380px;
  justify-self: start;
}
.about-photo img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  aspect-ratio: 2 / 3;
  object-fit: cover;
}
.about-text {
  color: var(--color-text);
  font-size: 1.05rem;
  margin-bottom: 2rem;
  max-width: 60ch;
}
.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  max-width: 480px;
}
.about-stats li {
  display: flex;
  flex-direction: column;
  border-left: 2px solid var(--color-text);
  padding: .25rem 0 .25rem 1rem;
}
.stat-num {
  font-weight: 600;
  font-size: 1.5rem;
}
.stat-label {
  font-size: .85rem;
  color: var(--color-text-muted);
  line-height: 1.3;
}

/* ---------- Experience timeline ---------- */
.timeline {
  position: relative;
  padding-left: 1.5rem;
  border-left: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
}
.timeline-item {
  position: relative;
}
.timeline-item::before {
  content: "";
  position: absolute;
  left: calc(-1.5rem - 5px);
  top: .5rem;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--color-text);
}
.timeline-meta {
  font-size: .85rem;
  color: var(--color-text-muted);
  letter-spacing: .04em;
  text-transform: uppercase;
  margin-bottom: .35rem;
}
.timeline-role {
  font-size: 1.15rem;
  margin-bottom: .15rem;
}
.timeline-company {
  color: var(--color-text-muted);
  font-size: .95rem;
  margin-bottom: .75rem;
}
.timeline-bullets {
  list-style: disc;
  padding-left: 1.1rem;
  color: var(--color-text);
}
.timeline-bullets li { margin-bottom: .25rem; }

/* ---------- Education ---------- */
.edu-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
.edu-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: transform var(--t), box-shadow var(--t);
}
.edu-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.edu-dates {
  font-size: .8rem;
  color: var(--color-text-muted);
  letter-spacing: .06em;
  text-transform: uppercase;
  margin-bottom: .5rem;
}
.edu-degree {
  font-size: 1.1rem;
  margin-bottom: .25rem;
}
.edu-note {
  font-weight: 400;
  font-size: .9rem;
  color: var(--color-text-muted);
}
.edu-school {
  font-size: .95rem;
  margin-bottom: .15rem;
}
.edu-location {
  font-size: .85rem;
  color: var(--color-text-muted);
}

/* ---------- Skills ---------- */
.skills-block { margin-bottom: 2.5rem; }
.skills-block:last-child { margin-bottom: 0; }
.skills-heading {
  font-size: 1.05rem;
  margin-bottom: 1rem;
  color: var(--color-text-muted);
  font-weight: 500;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.skills-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}
.skills-tags li {
  padding: .4rem .85rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: .9rem;
}
.skills-langs {
  display: grid;
  grid-template-columns: 1fr;
  gap: .75rem;
  max-width: 460px;
}
.skills-langs li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-bottom: .5rem;
  border-bottom: 1px solid var(--color-border);
}
.lang-name { font-weight: 500; }
.lang-level { color: var(--color-text-muted); font-size: .9rem; }

/* ---------- Contact ---------- */
.contact-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: start;
}
.contact-photo {
  max-width: 380px;
  justify-self: start;
}
.contact-photo img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  aspect-ratio: 2 / 3;
  object-fit: cover;
}
.contact-lead {
  color: var(--color-text);
  margin-bottom: 1.5rem;
  max-width: 55ch;
}
.contact-direct {
  display: grid;
  grid-template-columns: 1fr;
  gap: .6rem;
  margin-bottom: 2rem;
  padding: 1.25rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.contact-direct li {
  display: grid;
  grid-template-columns: 90px 1fr;
  align-items: baseline;
  gap: 1rem;
}
.contact-label {
  font-size: .8rem;
  color: var(--color-text-muted);
  letter-spacing: .06em;
  text-transform: uppercase;
}

.contact-form {
  display: grid;
  gap: 1rem;
  max-width: 520px;
}
.form-row {
  display: flex;
  flex-direction: column;
  gap: .35rem;
}
.form-row label {
  font-size: .85rem;
  color: var(--color-text-muted);
  letter-spacing: .04em;
}
.form-row input,
.form-row textarea {
  font-family: inherit;
  font-size: 1rem;
  padding: .65rem .85rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--t), box-shadow var(--t);
  resize: vertical;
}
.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--color-text);
  box-shadow: 0 0 0 3px rgba(26,26,26,.08);
}
.form-status {
  font-size: .9rem;
  min-height: 1.25rem;
}
.form-status.is-success { color: #1f7a3b; }
.form-status.is-error { color: #b3261e; }

/* ---------- Footer ---------- */
.site-footer {
  padding: 2rem 0;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: .9rem;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: .75rem;
}
.footer-links a { margin: 0 .25rem; }

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 600ms ease, transform 600ms ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Mobile nav drawer (covers portrait + landscape phones) ---------- */
@media (max-width: 899px) {
  .nav-links {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: .25rem 0;
    transform: translateY(-110%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--t), opacity var(--t);
    display: flex;
  }
  .nav-links.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-links li { width: 100%; }
  .nav-links li + li {
    border-top: 1px solid var(--color-border);
  }
  .nav-link {
    display: block;
    padding: 1rem var(--container-pad);
    width: 100%;
    font-size: 1rem;
    color: var(--color-text);
  }
  .nav-link.is-active {
    color: var(--color-text);
    background: var(--color-surface);
  }
}

/* ---------- Desktop nav (tablet landscape and up) ---------- */
@media (min-width: 900px) {
  .nav-links { display: flex; }
  .nav-toggle { display: none; }
}

/* ---------- Breakpoints ---------- */
@media (min-width: 768px) {
  .section { padding: 6rem 0; }

  .hero-inner {
    grid-template-columns: 1.1fr 1fr;
    gap: 4rem;
  }
  .hero-photo { justify-self: end; max-width: 460px; }

  .about-inner {
    grid-template-columns: 380px 1fr;
    gap: 3.5rem;
  }

  .edu-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .contact-inner {
    grid-template-columns: 380px 1fr;
    gap: 3.5rem;
  }
}

@media (min-width: 1024px) {
  .hero-inner { gap: 5rem; }
  .hero-photo { max-width: 540px; }
  .about-inner { grid-template-columns: 420px 1fr; }
  .about-photo { max-width: 420px; }
  .contact-inner { grid-template-columns: 420px 1fr; }
  .contact-photo { max-width: 420px; }
}