/* OMFS residency profile — mobile-first, QR-friendly */

:root {
  --bg: #f7f5f2;
  --bg-alt: #eeebe6;
  --surface: #ffffff;
  --ink: #1a1f24;
  --ink-muted: #5c6570;
  --accent: #1e4d5c;
  --accent-hover: #163a46;
  --accent-light: rgba(30, 77, 92, 0.08);
  --accent-medium: rgba(30, 77, 92, 0.15);
  --border: rgba(26, 31, 36, 0.1);
  --radius: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 8px rgba(26, 31, 36, 0.06);
  --shadow: 0 8px 32px rgba(26, 31, 36, 0.07);
  --shadow-lg: 0 16px 48px rgba(26, 31, 36, 0.1);
  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-display: "Instrument Serif", Georgia, serif;
  --space: clamp(1rem, 4vw, 2rem);
  --max: 68rem;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .fade-in { opacity: 1 !important; transform: none !important; }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
}

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

/* Skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0.75rem;
  z-index: 100;
  padding: 0.5rem 1rem;
  background: var(--ink);
  color: var(--bg);
  border-radius: var(--radius-sm);
}

.skip-link:focus { left: 0.75rem; }

.wrap {
  width: min(100% - var(--space) * 2, var(--max));
  margin-inline: auto;
}

/* ─── Header ─── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 245, 242, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3.75rem;
}

.logo {
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  color: var(--accent);
  text-decoration: none;
  padding: 0.35rem 0.55rem;
  border: 1.5px solid var(--accent);
  border-radius: 6px;
  line-height: 1;
  transition: background 0.15s ease, color 0.15s ease;
}

.logo:hover {
  background: var(--accent);
  color: #fff;
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 0.2rem;
}

.site-nav a {
  color: var(--ink-muted);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  transition: color 0.15s ease, background 0.15s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--accent);
  background: var(--accent-light);
}

.site-nav a.is-active {
  color: var(--accent);
  background: var(--accent-light);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background 0.15s ease;
}

.nav-toggle:hover { background: var(--accent-light); }

.nav-toggle-bar {
  display: block;
  height: 2px;
  width: 1.25rem;
  margin-inline: auto;
  background: var(--ink);
  border-radius: 1px;
  transition: transform 0.25s var(--ease-out), opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:first-child {
  transform: translateY(3.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:last-child {
  transform: translateY(-3.5px) rotate(-45deg);
}

@media (max-width: 54rem) {
  .nav-toggle { display: flex; }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s var(--ease-out);
  }

  .site-nav.is-open { max-height: min(85vh, 560px); }

  .site-nav ul {
    flex-direction: column;
    padding: 0.75rem var(--space) 1rem;
    gap: 0;
  }

  .site-nav a {
    display: block;
    padding: 0.7rem 0.25rem;
    border-radius: 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.92rem;
  }

  .site-nav li:last-child a { border-bottom: none; }
}

/* ─── Fade-in animation ─── */
.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s var(--ease-out), transform 0.65s var(--ease-out);
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Hero ─── */
.hero {
  padding: clamp(2.5rem, 8vw, 5rem) 0 clamp(2rem, 6vw, 3.5rem);
  background:
    radial-gradient(ellipse 90% 55% at 90% -10%, rgba(30, 77, 92, 0.09), transparent 65%),
    radial-gradient(ellipse 60% 60% at 10% 100%, rgba(30, 77, 92, 0.04), transparent 60%),
    var(--bg);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 48rem) {
  .hero-inner {
    grid-template-columns: auto 1fr;
    gap: 2.5rem 3rem;
    align-items: start;
  }

  .hero-portrait { grid-row: 1; grid-column: 1; }
  .hero-text { grid-row: 1; grid-column: 2; }
  .stat-row { grid-row: 2; grid-column: 1 / -1; }
}

/* Portrait */
.hero-portrait {
  justify-self: center;
}

.hero-portrait img {
  width: clamp(10rem, 22vw, 16rem);
  height: clamp(10rem, 22vw, 16rem);
  object-fit: cover;
  object-position: center 15%;
  border-radius: 50%;
  border: 4px solid var(--surface);
  box-shadow: var(--shadow), 0 0 0 1px var(--border);
}

.eyebrow {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.75rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5.5vw, 3.2rem);
  font-weight: 400;
  line-height: 1.15;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}

.degree {
  font-style: italic;
  color: var(--ink-muted);
}

.lead {
  font-size: 1.08rem;
  color: var(--ink-muted);
  max-width: 38rem;
  margin: 0 0 1.75rem;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

/* Stat row */
.stat-row {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

@media (min-width: 52rem) {
  .stat-row { grid-template-columns: repeat(6, 1fr); }
}

@media (max-width: 30rem) {
  .stat-row { grid-template-columns: repeat(2, 1fr); }
}

.stat {
  background: var(--surface);
  text-align: center;
}

.stat-link {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 1.1rem 0.75rem;
  text-decoration: none;
  color: inherit;
  transition: background 0.15s ease;
}

.stat-link:hover {
  background: var(--accent-light);
}

.stat-value {
  font-family: var(--font-display);
  font-size: 1.65rem;
  color: var(--accent);
  line-height: 1.2;
}

.stat-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-muted);
  line-height: 1.35;
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.3rem;
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease,
    box-shadow 0.18s ease, transform 0.18s ease;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--accent-hover);
  box-shadow: 0 4px 16px rgba(30, 77, 92, 0.25);
}

.btn-ghost {
  background: transparent;
  color: var(--accent);
  border-color: rgba(30, 77, 92, 0.3);
}

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

/* ─── Sections ─── */
.section {
  padding: clamp(3.5rem, 8vw, 5.5rem) 0;
}

.section-alt {
  background: var(--surface);
  border-block: 1px solid var(--border);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 4vw, 2.2rem);
  font-weight: 400;
  margin: 0 0 1.5rem;
  color: var(--ink);
  position: relative;
  padding-bottom: 0.75rem;
}

.section-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 2.5rem;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}

.section-contact .section-title::after {
  left: 50%;
  transform: translateX(-50%);
}

.section-lead {
  margin: 0 0 1.75rem;
  max-width: 42rem;
  color: var(--ink-muted);
  font-size: 1rem;
}

.prose p {
  margin: 0 0 1rem;
  color: var(--ink-muted);
}

.prose p:last-child { margin-bottom: 0; }

@media (min-width: 48rem) {
  .two-col {
    columns: 2;
    column-gap: 2.5rem;
  }

  .two-col p { break-inside: avoid; }
}

.muted {
  color: var(--ink-muted);
  font-size: 0.93rem;
}

/* ─── Timeline ─── */
.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 2px solid var(--border);
  margin-left: 0.5rem;
}

.timeline li {
  position: relative;
  padding: 0 0 2rem 1.75rem;
}

.timeline li::before {
  content: "";
  position: absolute;
  left: -0.4rem;
  top: 0.35rem;
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--bg);
}

.section-alt .timeline li::before {
  box-shadow: 0 0 0 4px var(--surface);
}

.timeline li:last-child { padding-bottom: 0; }

.timeline h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0.25rem 0 0.25rem;
}

.timeline-date {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.04em;
}

/* ─── Cards ─── */
.card-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

@media (min-width: 40rem) {
  .card-list { grid-template-columns: repeat(2, 1fr); }
}

.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem 1.5rem;
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out);
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
}

.card p {
  margin: 0;
  font-size: 0.93rem;
  color: var(--ink-muted);
}

.card .muted { margin-bottom: 0.5rem; }

.section-alt .card { background: var(--surface); }

/* ─── Research article cards ─── */
.article-grid {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.article-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.5rem 1.5rem 1.35rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out);
}

.article-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.article-card-top { margin-bottom: 0.75rem; }

.article-type {
  display: inline-block;
  font-size: 0.63rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-light);
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  margin-bottom: 0.65rem;
}

.article-title {
  font-family: var(--font-sans);
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.35;
  margin: 0 0 0.5rem;
  color: var(--ink);
}

.article-meta {
  margin: 0;
  font-size: 0.88rem;
  color: var(--ink-muted);
  line-height: 1.5;
}

.article-summary {
  margin: 0 0 0.85rem;
  font-size: 0.93rem;
  color: var(--ink-muted);
  line-height: 1.65;
}

.article-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin-bottom: 0.25rem;
}

.article-links a {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
}

.article-links a:hover,
.article-links a:focus-visible {
  text-decoration: underline;
}

.article-details {
  margin-top: 0.85rem;
  border-top: 1px solid var(--border);
  padding-top: 0.85rem;
}

.article-details summary {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent);
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.article-details summary::-webkit-details-marker { display: none; }

.article-details summary::after {
  content: "";
  display: inline-block;
  width: 0.35rem;
  height: 0.35rem;
  margin-left: 0.4rem;
  border-right: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(45deg);
  vertical-align: 0.15em;
  transition: transform 0.2s ease;
}

.article-details[open] summary::after {
  transform: rotate(225deg);
  vertical-align: 0.05em;
}

@media (prefers-reduced-motion: reduce) {
  .article-details summary::after { transition: none; }
}

.article-details-body {
  margin-top: 0.85rem;
  border-left: 2px solid var(--accent-medium);
  padding-left: 1rem;
}

.article-details-body p {
  margin: 0 0 0.75rem;
  font-size: 0.9rem;
  color: var(--ink-muted);
}

.article-details-body ul {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--ink-muted);
  font-size: 0.9rem;
}

.article-details-body li { margin-bottom: 0.35rem; }

/* ─── Coding projects ─── */
.project-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 44rem) {
  .project-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 62rem) {
  .project-grid { grid-template-columns: repeat(3, 1fr); }
}

.project-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem 1.5rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out);
}

.project-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.section-alt .project-card { background: var(--surface); }

.project-title {
  margin: 0;
  font-size: 1.06rem;
  font-weight: 700;
}

.project-desc {
  margin: 0;
  font-size: 0.9rem;
  color: var(--ink-muted);
  line-height: 1.6;
  flex-grow: 1;
}

.tech-tags {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tech-tags li {
  font-size: 0.67rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-light);
  padding: 0.28rem 0.5rem;
  border-radius: var(--radius-sm);
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  padding-top: 0.15rem;
}

.project-links a {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
}

.project-links a:hover,
.project-links a:focus-visible {
  text-decoration: underline;
}

/* ─── Full CV ─── */
.cv-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem 1.5rem;
  margin-bottom: 1.5rem;
}

.cv-header-title { margin-bottom: 0; }

.cv-toc {
  margin: 0 0 2.25rem;
  padding: 1.1rem 1.35rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.cv-toc-label {
  display: block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 0.65rem;
}

.cv-toc ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 1rem;
}

.cv-toc a {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  padding: 0.2rem 0;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s ease;
}

.cv-toc a:hover,
.cv-toc a:focus-visible {
  border-bottom-color: var(--accent);
}

.cv-body { max-width: 48rem; }

.cv-block {
  margin-bottom: 2.25rem;
  scroll-margin-top: 5rem;
}

.cv-block:last-child { margin-bottom: 0; }

.cv-block h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 400;
  margin: 0 0 0.65rem;
  color: var(--ink);
}

.cv-block p {
  margin: 0 0 0.75rem;
  color: var(--ink-muted);
}

.cv-list {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--ink-muted);
}

.cv-list li { margin-bottom: 0.5rem; }
.cv-list li:last-child { margin-bottom: 0; }

/* ─── Contact ─── */
.section-contact { text-align: center; }

.contact-inner { max-width: 40rem; }

.contact-lead {
  color: var(--ink-muted);
  margin: 0 0 1.75rem;
  font-size: 1.05rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin-bottom: 2rem;
}

.contact-card {
  background: var(--bg);
  padding: 1.25rem 1rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  text-decoration: none;
  color: inherit;
  transition: background 0.15s ease;
}

a.contact-card:hover { background: var(--accent-light); }

.contact-card-icon {
  color: var(--accent);
  margin-bottom: 0.15rem;
}

.contact-card-label {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.contact-card-value {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink);
  word-break: break-word;
}

a.contact-card .contact-card-value { color: var(--accent); }

@media (max-width: 36rem) {
  .contact-grid { grid-template-columns: 1fr; }
}

.fine-print {
  font-size: 0.78rem;
  color: var(--ink-muted);
  margin: 0;
}

/* ─── Footer ─── */
.site-footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.footer-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.25rem 0.75rem;
}

.footer-nav a {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--ink-muted);
  text-decoration: none;
  padding: 0.2rem 0;
  transition: color 0.15s ease;
}

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

.footer-inner > p {
  margin: 0;
  font-size: 0.8rem;
  color: var(--ink-muted);
  text-align: center;
}