:root {
  --bg: #070b12;
  --bg-soft: #0d1320;
  --text: #e9efff;
  --muted: #9daccc;
  --line: rgba(218, 236, 255, 0.14);
  --accent: #2af8dd;
  --accent-soft: rgba(42, 248, 221, 0.24);
  --card: rgba(13, 19, 32, 0.76);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: "Sora", "Manrope", "Avenir Next", "Helvetica Neue", sans-serif;
  background:
    radial-gradient(1200px 600px at 12% -10%, rgba(42, 248, 221, 0.16), transparent 60%),
    radial-gradient(900px 520px at 92% 0%, rgba(98, 119, 255, 0.12), transparent 58%),
    var(--bg);
  line-height: 1.6;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(transparent 97%, rgba(255, 255, 255, 0.025) 100%);
  background-size: 100% 3px;
  opacity: 0.3;
  z-index: 0;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 4;
  max-width: 960px;
  margin: 0 auto;
  padding: 1.15rem 1.1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  backdrop-filter: blur(12px);
  background: color-mix(in oklab, var(--bg) 86%, transparent);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.topbar nav {
  display: flex;
  gap: 1rem;
}

.brand,
.topbar a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 550;
  letter-spacing: 0.04em;
  font-size: 0.82rem;
  text-transform: uppercase;
}

.topbar a:hover,
.topbar a:focus-visible {
  color: var(--text);
}

main {
  position: relative;
  z-index: 2;
  max-width: 960px;
  margin: 0 auto;
  padding: 4.2rem 1.1rem 4.6rem;
}

.section {
  margin-bottom: 1rem;
}

/* ── Hero with profile photo ── */
.hero {
  padding: 2.6rem 0 2.2rem;
}

.hero-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.hero-text {
  flex: 1;
}

.hero-photo {
  flex-shrink: 0;
}

.hero-photo img {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--accent-soft);
  box-shadow:
    0 0 40px rgba(42, 248, 221, 0.15),
    0 8px 32px rgba(0, 0, 0, 0.4);
  transition: transform 360ms ease, box-shadow 360ms ease;
}

.hero-photo img:hover {
  transform: scale(1.04);
  box-shadow:
    0 0 60px rgba(42, 248, 221, 0.25),
    0 12px 48px rgba(0, 0, 0, 0.5);
}

.eyebrow {
  margin: 0 0 0.8rem;
  color: var(--accent);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  max-width: 17ch;
  font-size: clamp(2rem, 5.6vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.015em;
}

.summary {
  max-width: 58ch;
  margin-top: 1rem;
  color: var(--muted);
  font-size: clamp(1rem, 1.55vw, 1.22rem);
}

.cta-row {
  margin-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.btn {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.58rem 1.03rem;
  text-decoration: none;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  color: var(--text);
  transition: border-color 220ms ease, background-color 220ms ease, color 220ms ease;
}

.btn-primary {
  border-color: color-mix(in oklab, var(--accent) 65%, white 18%);
  background: var(--accent-soft);
}

.btn:hover,
.btn:focus-visible {
  border-color: var(--accent);
}

.card {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.25rem;
  background: var(--card);
}

h2 {
  margin: 0 0 0.95rem;
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--accent);
  text-transform: uppercase;
}

h3 {
  margin: 0;
  font-size: 1rem;
  line-height: 1.35;
  font-weight: 550;
  color: var(--text);
}

p {
  margin: 0.55rem 0 0;
  color: var(--muted);
}

/* ── Item list details (bullet points from resume) ── */
.item-details {
  margin: 0.45rem 0 0;
  padding-left: 1.25rem;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.65;
}

.item-details li {
  margin-bottom: 0.3rem;
}

.item-details li::marker {
  color: var(--accent);
}

/* ── Project tags ── */
.project-tags {
  margin: 0.25rem 0 0;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: color-mix(in oklab, var(--accent) 70%, var(--muted) 30%);
}

/* ── Items ── */
.item {
  padding: 0.8rem 0;
}

.item + .item {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.item-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem 1rem;
}

.item-head p {
  margin-top: 0;
  font-size: 0.88rem;
}

/* ── GitHub link on projects ── */
.github-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  text-decoration: none;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 500;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: border-color 220ms ease, color 220ms ease, background 220ms ease;
}

.github-link:hover,
.github-link:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

.github-link svg {
  flex-shrink: 0;
}

/* ── Publication / Cert item-head: keep link pinned right ── */
#publications .item-head,
#certifications .item-head {
  flex-wrap: nowrap;
  align-items: flex-start;
}

#publications .item-head h3,
#certifications .item-head h3 {
  flex: 1;
  min-width: 0;
}

/* ── Publication link ── */
.pub-link,
.cert-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  text-decoration: none;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 500;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: border-color 220ms ease, color 220ms ease, background 220ms ease;
  white-space: nowrap;
}

.pub-link:hover,
.pub-link:focus-visible,
.cert-link:hover,
.cert-link:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

.pub-link svg,
.cert-link svg {
  flex-shrink: 0;
}

/* ── Contact ── */
.contact-links {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.contact-links a {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.48rem 0.8rem;
  color: var(--text);
  text-decoration: none;
  font-size: 0.82rem;
}

.contact-links a:hover,
.contact-links a:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}

/* ── Custom cursor ── */
.mf-cursor {
  z-index: 50;
  color: var(--accent);
}

.mf-cursor::before {
  border-radius: 999px;
  background: color-mix(in oklab, var(--accent) 65%, white 8%);
  transition: transform 220ms ease, border-radius 220ms ease, opacity 220ms ease;
}

.mf-cursor.-text::before {
  border-radius: 14px;
  transform: scale(1.85);
  background: color-mix(in oklab, var(--accent) 78%, white 12%);
}

.mf-cursor.-pointer::before {
  transform: scale(1.35);
}

.mf-cursor.-opaque::before {
  opacity: 0.38;
  transform: scale(1.95);
}

.mf-cursor.-active::before {
  transform: scale(0.9);
}

.mf-cursor-text {
  font-family: "Sora", "Manrope", "Avenir Next", "Helvetica Neue", sans-serif;
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
}

@media (pointer: fine) and (prefers-reduced-motion: no-preference) {
  html,
  body,
  a,
  button,
  [role="button"] {
    cursor: none;
  }
}

[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 460ms ease, transform 460ms ease;
}

[data-reveal].visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 760px) {
  .topbar {
    padding: 0.9rem 1rem;
  }

  .topbar nav {
    gap: 0.55rem;
  }

  .topbar a,
  .brand {
    font-size: 0.68rem;
    letter-spacing: 0.02em;
  }

  .brand {
    display: none;
  }

  main {
    padding-top: 2.5rem;
  }

  .hero {
    padding-top: 1.5rem;
  }

  .hero-content {
    flex-direction: column-reverse;
    text-align: center;
    gap: 1.5rem;
  }

  .hero-photo img {
    width: 160px;
    height: 160px;
  }

  h1 {
    max-width: none;
  }

  .cta-row {
    justify-content: center;
  }

  .card {
    padding: 1.05rem;
    border-radius: 14px;
  }

  .item-head {
    flex-direction: column;
    align-items: flex-start;
  }
}