/* ---- Design tokens ---- */
:root {
  --paper: #faf8f4;
  --ink: #1c1a17;
  --body-text: #3a3630;
  --secondary: #6f6a62;
  --accent: #c4471e;
  --accent-hover: #8f3315;
  --placeholder-fill: #efece5;

  --hairline-10: rgba(28, 26, 23, .1);
  --hairline-12: rgba(28, 26, 23, .12);
  --hairline-14: rgba(28, 26, 23, .14);
  --button-border: rgba(28, 26, 23, .22);
  --nav-backdrop: rgba(250, 248, 244, .92);

  --font-display: 'Newsreader', serif;
  --font-body: 'IBM Plex Sans', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

/* ---- Reset ---- */
* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

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

a {
  color: var(--accent);
  text-decoration: none;
}

ul {
  list-style: disc;
}

img, svg {
  max-width: 100%;
}

/* ---- Nav ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  height: 60px;
  padding: 0 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--nav-backdrop);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--hairline-10);
}

.nav__mark {
  font: 500 13px/1 var(--font-mono);
  color: var(--ink);
  letter-spacing: .02em;
}

.nav__links {
  display: flex;
  gap: 26px;
  overflow-x: auto;
}

.nav__link {
  font: 400 12.5px/1 var(--font-mono);
  color: var(--secondary);
  padding-bottom: 3px;
  border-bottom: 1px solid transparent;
  white-space: nowrap;
  transition: color .18s ease, border-color .18s ease;
}

.nav__link:hover,
.nav__link.is-active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---- Hero ---- */
.hero {
  max-width: 880px;
  margin: 0 auto;
  padding: 88px 100px 0;
  text-align: center;
}

.hero__avatar {
  display: block;
  margin: 0 auto 28px;
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
}

.hero__name {
  margin: 0;
  font: 300 68px/1.02 var(--font-display);
  letter-spacing: -.02em;
}

.hero__sub {
  margin: 22px auto 0;
  max-width: 520px;
  font: 300 20px/1.55 var(--font-display);
  color: var(--secondary);
  text-wrap: pretty;
}

.hero__actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}

.btn {
  font: 500 12px/1 var(--font-mono);
  border-radius: 3px;
  transition: background .18s ease, border-color .18s ease, color .18s ease;
}

.btn--primary {
  color: var(--paper);
  background: var(--ink);
  padding: 11px 16px;
}

.btn--primary:hover {
  background: var(--accent);
  color: var(--paper);
}

.btn--secondary {
  color: var(--ink);
  border: 1px solid var(--button-border);
  padding: 10px 16px;
}

.btn--secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.hero__availability {
  margin-top: 26px;
  font: 400 12px/1.5 var(--font-mono);
  color: var(--accent);
}

/* ---- Body sections ---- */
.content {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 140px 90px;
}

.section-heading {
  margin: 0 0 24px;
  font: 500 11px/1 var(--font-mono);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--secondary);
}

section {
  padding-top: 70px;
  scroll-margin-top: 80px;
}

/* ---- About ---- */
#about {
  padding-top: 80px;
}

#about .section-heading {
  margin-bottom: 20px;
}

.about__lead {
  margin: 0;
  font: 300 21px/1.6 var(--font-display);
  text-wrap: pretty;
}

.about__detail {
  margin: 18px 0 0;
  font: 400 14.5px/1.75 var(--font-body);
  color: var(--secondary);
  text-wrap: pretty;
}

/* ---- Experience ---- */
.experience__role {
  margin: 0;
  font: 400 27px/1.25 var(--font-display);
}

.experience__meta {
  margin: 8px 0 20px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font: 400 13px/1.4 var(--font-mono);
  color: var(--secondary);
}

.experience__bullets {
  margin: 0;
  padding-left: 20px;
  font: 400 15px/1.75 var(--font-body);
  color: var(--body-text);
  display: flex;
  flex-direction: column;
  gap: 11px;
}

/* ---- Projects ---- */
.projects__list {
  display: flex;
  flex-direction: column;
  gap: 38px;
}

.project__title {
  margin: 0;
  font: 400 25px/1.25 var(--font-display);
}

.project__meta {
  margin: 7px 0 14px;
  font: 400 12.5px/1.4 var(--font-mono);
  color: var(--secondary);
}

.project__desc {
  margin: 0 0 12px;
  font: 400 15px/1.7 var(--font-body);
  color: var(--body-text);
  text-wrap: pretty;
}

.project__link {
  font: 500 12.5px/1 var(--font-mono);
  color: var(--accent);
}

/* ---- Resume ---- */
.resume__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 20px;
}

.resume__header .section-heading {
  margin: 0;
}

.resume__download {
  font: 500 12px/1 var(--font-mono);
  color: var(--accent);
}

.resume__viewer {
  border: 1px solid var(--hairline-14);
  background: #fff;
  padding: 8px;
}

.resume__viewer iframe {
  display: block;
  width: 100%;
  height: 600px;
  border: 0;
}

.resume__card {
  display: none;
  border: 1px solid var(--hairline-14);
  background: #fff;
  padding: 24px;
  text-align: center;
}

.resume__card-name {
  margin: 0 0 6px;
  font: 400 18px/1.3 var(--font-display);
}

.resume__card-meta {
  margin: 0 0 18px;
  font: 400 12.5px/1.5 var(--font-mono);
  color: var(--secondary);
}

/* ---- Footer ---- */
.footer {
  margin-top: 80px;
  padding-top: 26px;
  border-top: 1px solid var(--hairline-12);
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font: 400 12px/1.4 var(--font-mono);
  color: var(--secondary);
}

.footer a {
  color: var(--secondary);
  transition: color .18s ease;
}

.footer a:hover {
  color: var(--accent);
}

.footer__links {
  display: flex;
  gap: 16px;
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .hero {
    padding: 64px 24px 0;
  }

  .content {
    padding: 0 24px 64px;
  }

  .hero__name {
    font-size: 44px;
  }
}

@media (max-width: 700px) {
  .nav {
    padding: 0 20px;
  }

  .nav__links {
    gap: 18px;
  }

  .resume__viewer {
    display: none;
  }

  .resume__card {
    display: block;
  }
}

/* ---- Reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .nav__link,
  .btn,
  .footer a {
    transition: none;
  }
}