:root {
  --paper: #F7F7F4;
  --ink: #14181F;
  --ink-soft: #4A5058;
  --navy: #1F3A5F;
  --signal: #3D8B7D;
  --line: #DAD8D0;
  --marker: #B8862E;
  --max-w: 880px;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--navy);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}
a:hover, a:focus-visible {
  border-color: currentColor;
}
a:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
  border-radius: 2px;
}

/* subtle paper grain, purely decorative */
.grain {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- HERO ---------- */

.hero {
  position: relative;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 4.5rem 1.5rem 5rem;
  z-index: 1;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2.5rem;
}

.hero-text {
  flex: 1;
  min-width: 0;
}

.portrait {
  flex-shrink: 0;
  width: 200px;
  height: 200px;
  margin-top: 0.4rem;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--paper);
  outline: 2px solid var(--navy);
  outline-offset: -1px;
  box-shadow: 0 6px 20px rgba(20, 24, 31, 0.12);
}

.hero-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.4rem, 6vw, 4rem);
  line-height: 1.05;
  margin: 0 0 0.9rem;
  max-width: 11ch;
  letter-spacing: -0.01em;
}

.hero-role {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--navy);
  margin: 0 0 1.6rem;
  letter-spacing: 0.02em;
}

.hero-bio {
  max-width: 52ch;
  color: var(--ink-soft);
  font-size: 1.05rem;
  margin: 0 0 2.4rem;
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.6rem;
  font-family: var(--font-mono);
  font-size: 0.88rem;
}

/* ---------- SECTIONS ---------- */

.section {
  position: relative;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 3.5rem 1.5rem;
  border-top: 1px solid var(--line);
  z-index: 1;
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 2.2rem;
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--marker);
}

.section-title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 600;
  margin: 0;
}

/* ---------- TIMELINE / EXPERIENCE ---------- */

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2.6rem;
}

.entry-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
}

.entry-body h3, .edu-entry h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin: 0;
}

.entry-date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--signal);
  white-space: nowrap;
}

.entry-org {
  color: var(--ink-soft);
  font-size: 0.95rem;
  margin: 0.25rem 0 0.7rem;
}

.entry-body ul {
  margin: 0;
  padding-left: 1.1rem;
}
.entry-body li {
  margin-bottom: 0.4rem;
  font-size: 0.96rem;
}

/* ---------- PROJECTS ---------- */

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.project-card {
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1.6rem;
  background: #FCFCFB;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.project-card:hover {
  border-color: var(--signal);
  transform: translateY(-2px);
}

.project-card h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin: 0 0 0.6rem;
}

.project-card p {
  font-size: 0.94rem;
  color: var(--ink-soft);
  margin: 0 0 1rem;
}

.tech-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0;
  margin: 0 0 1.1rem;
}
.tech-list li {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 0.2rem 0.5rem;
  color: var(--navy);
}

.project-link {
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.project-note {
  margin-top: 1.4rem;
  font-size: 0.82rem;
  color: var(--ink-soft);
  font-family: var(--font-mono);
}
.project-note code {
  background: #EFEEE8;
  padding: 0.1rem 0.35rem;
  border-radius: 2px;
}

/* ---------- EDUCATION ---------- */

.edu-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
}

.edu-courses {
  font-size: 0.88rem;
  color: var(--ink-soft);
  margin: 0;
}

/* ---------- SKILLS ---------- */

.skill-groups {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.6rem 2.5rem;
}

.skill-group h3 {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--navy);
  margin: 0 0 0.4rem;
  text-transform: uppercase;
}
.skill-group p {
  margin: 0;
  font-size: 0.94rem;
  color: var(--ink-soft);
}

/* ---------- FOOTER ---------- */

.footer {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
  border-top: 1px solid var(--line);
  text-align: center;
  position: relative;
  z-index: 1;
}

.footer p {
  font-family: var(--font-display);
  font-weight: 600;
  margin: 0 0 0.8rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

/* ---------- RESPONSIVE ---------- */

@media (max-width: 640px) {
  .hero {
    flex-direction: column-reverse;
    align-items: center;
    text-align: center;
    gap: 1.5rem;
  }
  .hero-bio {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-links {
    justify-content: center;
  }
  .portrait {
    width: 120px;
    height: 120px;
  }
  .project-grid, .skill-groups {
    grid-template-columns: 1fr;
  }
}

/* ---------- SCROLL REVEAL ---------- */

.section {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.section.in-view {
  opacity: 1;
  transform: translateY(0);
}
.hero {
  opacity: 0;
  animation: reveal 0.7s ease 0.05s forwards;
}
@keyframes reveal {
  to { opacity: 1; }
}