/* Media Queries & Responsive Refinements */
@media (max-width: 1100px) {
  .section {
    padding-left: clamp(24px, 5vw, 56px);
    padding-right: clamp(24px, 5vw, 56px);
  }

  .hero {
    grid-template-columns: minmax(0, 1fr) minmax(240px, 320px);
    padding-left: clamp(24px, 5vw, 56px);
    padding-right: clamp(24px, 5vw, 56px);
  }

  .hero-rail {
    display: none;
  }

  .degrees {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .degree {
    min-height: 500px;
    height: 100%;
  }

  .degree-last {
    grid-column: auto;
    min-height: 500px;
  }

  .degree-dual .dual-degrees {
    gap: 14px;
  }

  .dual-degree h3 {
    font-size: clamp(22px, 2.4vw, 31px);
  }

  .project-wide {
    grid-template-columns: 45px 1fr .7fr;
  }
}

@media (max-width: 900px) {
  header {
    padding: 0 20px;
  }

  .menu-toggle {
    display: block;
    order: 3;
  }

  .say-hi {
    margin-left: auto;
    margin-right: 12px;
  }

  nav {
    display: flex;
    position: fixed;
    inset: 72px 0 auto 0;
    flex-direction: column;
    gap: 0;
    padding: 18px 24px 24px;
    background: #f2f0e9;
    border-bottom: 1px solid rgba(21, 44, 49, .15);
    transform: translateY(-130%);
    visibility: hidden;
    transition: transform .25s ease, visibility .25s;
  }

  nav.open {
    transform: translateY(0);
    visibility: visible;
  }

  nav a {
    font-size: 13px;
    padding: 12px 0;
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    padding-top: 130px;
  }

  .hero-copy {
    max-width: 760px;
  }

  .portrait-wrap {
    width: min(320px, 72vw);
    margin: 24px auto 0;
  }

  .about-lead {
    column-gap: 24px;
  }

  .giant-letter {
    font-size: clamp(140px, 24vw, 220px);
  }

  .about-lead h2 br,
  .experience-title h2 br {
    display: none;
  }

  .about,
  .experience-shell {
    grid-template-columns: 1fr;
  }

  .about-body {
    margin-top: 40px;
  }

  .experience-title {
    position: static;
    margin-bottom: 45px;
  }

  .degrees {
    grid-template-columns: 1fr;
  }

  .degree,
  .degree-last {
    grid-column: auto;
    width: 100%;
    min-height: 380px;
    height: auto;
  }

  .project-wide {
    grid-template-columns: 45px 1fr;
  }

  .data-viz {
    display: none;
  }

  .work-heading,
  .education-head {
    align-items: flex-start;
  }
}

@media (max-width: 600px) {
  .section {
    padding: 85px 20px;
  }

  .section-tag {
    margin-bottom: 50px;
  }

  header {
    height: 64px;
  }

  .say-hi {
    font-size: 10px;
  }

  .menu-toggle {
    margin-right: -8px;
  }

  nav {
    top: 64px;
  }

  .hero {
    padding: 96px 20px 65px;
  }

  .hero-actions {
    flex-wrap: wrap;
  }

  h1 {
    font-size: clamp(47px, 15vw, 64px);
    overflow-wrap: anywhere;
  }

  .hero-lead {
    font-size: 16px;
  }

  .portrait {
    box-shadow: 10px 10px 0 #ff6b4a;
  }

  .portrait-wrap {
    width: min(270px, 72vw);
  }

  .portrait-note {
    display: block;
  }

  .portrait-note span {
    display: block;
    margin-top: 5px;
  }

  .about-lead {
    column-gap: 16px;
  }

  .giant-letter {
    font-size: clamp(105px, 29vw, 155px);
  }

  .about-lead h2,
  .education-head h2,
  .work-heading h2,
  .research-head h2 {
    font-size: clamp(44px, 14vw, 62px);
  }

  .statement {
    font-size: 29px;
  }

  .proof-line {
    grid-template-columns: 1fr;
    margin-top: 60px;
  }

  .proof-line div,
  .proof-line div + div {
    padding: 18px 0;
    border-right: 0;
    border-bottom: 1px solid #cdd1ca;
  }

  .education-head,
  .work-heading,
  .research-head {
    display: block;
  }

  .education-head p,
  .work-heading p {
    margin-top: 30px;
  }

  .degree,
  .degree-last {
    min-height: 350px;
    height: auto;
  }

  .degree-dual .dual-degrees {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .dual-divider {
    width: 100%;
    height: 1px;
  }

  .dual-degree h3 {
    font-size: 30px;
  }

  .job {
    grid-template-columns: 1fr;
    gap: 9px;
    padding-left: 22px;
  }

  .job:before {
    left: 0;
  }

  .projects {
    grid-template-columns: 1fr;
  }

  .project-wide {
    grid-column: auto;
    grid-template-columns: 1fr;
  }

  .project {
    min-height: 340px;
    padding: 24px;
  }

  .project:not(.project-wide) h3 {
    font-size: clamp(28px, 9vw, 36px);
  }

  .papers a {
    grid-template-columns: 45px 1fr 20px;
    gap: 10px;
    align-items: start;
  }

  .papers b {
    font-size: 14px;
  }

  .papers i {
    justify-self: end;
  }

  .contact h2 {
    font-size: clamp(50px, 16vw, 72px);
  }

  .contact > a {
    font-size: clamp(16px, 5vw, 22px);
    overflow-wrap: anywhere;
  }

  .contact div {
    gap: 16px;
    flex-wrap: wrap;
  }

  footer {
    display: block;
  }

  footer span {
    display: block;
    margin-top: 5px;
  }

}

@media (max-width: 380px) {
  .say-hi {
    display: none;
  }

  .hero {
    padding-left: 16px;
    padding-right: 16px;
  }

  .section {
    padding-left: 16px;
    padding-right: 16px;
  }

  .project {
    padding: 20px;
  }

  .papers a {
    grid-template-columns: 40px 1fr;
  }

  .papers i {
    display: none;
  }
}

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

  .degree {
    transition: none;
  }
}

/* Subtle interaction polish */
.section {
  position: relative;
}

.degree,
.project,
.papers a,
.pill,
.contact > a {
  transition:
    transform .22s ease,
    box-shadow .22s ease,
    border-color .22s ease,
    color .22s ease;
}

.project:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 34px rgba(21, 44, 49, .08);
}

.papers a:hover {
  transform: translateX(5px);
}

.pill:hover,
.contact > a:hover {
  transform: translateY(-2px);
}

@media (prefers-reduced-motion: reduce) {
  .degree,
  .project,
  .papers a,
  .pill,
  .contact > a {
    transition: none;
  }

  .degree:hover,
  .project:hover,
  .papers a:hover,
  .pill:hover,
  .contact > a:hover {
    transform: none;
  }
}

/* Desktop content width */
@media (min-width: 1200px) {
  .section,
  .hero,
  header,
  footer {
    padding-left: 15vw;
    padding-right: 15vw;
  }

  .education {
    padding-left: 12vw;
    padding-right: 12vw;
  }
}

/* Centered desktop navigation */
@media (min-width: 901px) {
  header {
    position: fixed;
  }

  header nav {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: max-content;
    justify-content: center;
  }
}

/* About counters */
.proof-line b.counter {
  min-width: 1.8ch;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}