:root {
  --bg: #E8F4FD;
  --surface: #F4FAFF;
  --ink: #0E1A2B;
  --muted: #536075;
  --line: #DDE3EB;
  --accent: #0B7285;
  --accent-ink: #FFFFFF;
  --accent-soft: #E3F3F6;
  --ok: #1F9D55;
  --font: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  body { background-image: none; }
  :root {
    --bg: #0B111A;
    --surface: #121A26;
    --ink: #E8EDF4;
    --muted: #9AA7BA;
    --line: #233044;
    --accent: #5CC8D7;
    --accent-ink: #06222A;
    --accent-soft: #123039;
    --ok: #4ADE80;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 5rem; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }
body { margin: 0; background: var(--bg); background-image: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%); background-attachment: fixed; color: var(--ink); font-family: var(--font); font-size: 1.0625rem; line-height: 1.6; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: var(--accent); }
a:focus-visible, button:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
.wrap { width: min(1080px, 100% - 2.5rem); margin-inline: auto; }
.skip { position: absolute; left: -999px; top: 0.5rem; background: var(--surface); color: var(--ink); padding: 0.5rem 0.9rem; border-radius: 8px; z-index: 100; }
.skip:focus { left: 0.75rem; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.bar { display: flex; align-items: center; justify-content: space-between; min-height: 4rem; gap: 1rem; }
.brand { font-weight: 700; color: var(--ink); text-decoration: none; letter-spacing: -0.01em; }
.nav { display: flex; align-items: center; gap: 1.5rem; }
.nav a { color: var(--muted); text-decoration: none; font-weight: 500; font-size: 0.97rem; }
.nav a:hover { color: var(--ink); }
.nav .btn { color: var(--accent-ink); }
.nav-toggle { display: none; background: none; border: 1px solid var(--line); color: var(--ink); font: inherit; font-weight: 500; padding: 0.4rem 0.85rem; border-radius: 999px; cursor: pointer; }

/* Buttons */
.btn { display: inline-block; background: var(--accent); color: var(--accent-ink); font-weight: 600; text-decoration: none; padding: 0.8rem 1.4rem; border-radius: 999px; border: 1px solid var(--accent); transition: transform .15s ease, box-shadow .15s ease; }
.btn:hover { transform: translateY(-1px); box-shadow: 0 6px 18px color-mix(in srgb, var(--accent) 30%, transparent); }
.btn-ghost { background: transparent; color: var(--accent); }
.btn-small { padding: 0.45rem 1rem; font-size: 0.93rem; }

/* Hero */
.hero { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: clamp(2rem, 5vw, 4.5rem); align-items: center; padding-block: clamp(3rem, 8vw, 6rem) clamp(2rem, 5vw, 3.5rem); }
.eyebrow { font-family: var(--mono); font-size: 0.85rem; color: var(--accent); text-transform: uppercase; letter-spacing: 0.12em; margin: 0 0 1rem; }
h1 { font-size: clamp(2.3rem, 5.6vw, 3.9rem); line-height: 1.04; letter-spacing: -0.03em; margin: 0 0 1.25rem; font-weight: 700; }
.lead { color: var(--muted); font-size: 1.15rem; max-width: 36rem; margin: 0 0 1.75rem; }
.cta { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.social { list-style: none; display: flex; gap: 1.4rem; padding: 0; margin: 1.75rem 0 0; }
.social a { color: var(--muted); text-decoration: none; font-weight: 500; border-bottom: 1px solid var(--line); }
.social a:hover { color: var(--ink); border-color: var(--accent); }

/* Cards */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.profile { overflow: hidden; }
.profile img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; object-position: center 15%; }
.readout { padding: 1.1rem 1.25rem 1.25rem; font-family: var(--mono); font-size: 0.82rem; }
.readout-head { display: flex; justify-content: space-between; margin: 0 0 0.8rem; padding-bottom: 0.7rem; border-bottom: 1px dashed var(--line); color: var(--muted); }
.status { color: var(--ok); display: inline-flex; align-items: center; gap: 0.4rem; }
.status i { width: 0.5rem; height: 0.5rem; border-radius: 50%; background: var(--ok); display: inline-block; }
.readout dl { margin: 0; display: grid; gap: 0.35rem; }
.readout dl div { display: grid; grid-template-columns: 5.5rem 1fr; gap: 0.5rem; }
.readout dt { color: var(--muted); }
.readout dd { margin: 0; color: var(--ink); }

/* Stats */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); overflow: hidden; }
.stats div { padding: 1.4rem 1.5rem; border-right: 1px solid var(--line); }
.stats div:last-child { border-right: 0; }
.stats strong { display: block; font-size: 2rem; letter-spacing: -0.02em; line-height: 1.1; color: var(--accent); }
.stats span { color: var(--muted); font-size: 0.93rem; line-height: 1.4; display: block; margin-top: 0.3rem; }

/* Sections */
.section { padding-block: clamp(3rem, 7vw, 5rem) 0; }
h2 { font-size: clamp(1.6rem, 3vw, 2rem); letter-spacing: -0.02em; margin: 0 0 1.5rem; display: flex; align-items: center; gap: 1rem; }
h2::after { content: ""; flex: 1; height: 1px; background: var(--line); }
h3 { margin: 0 0 0.35rem; font-size: 1.12rem; letter-spacing: -0.01em; }
.about { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.about p { margin: 0; color: var(--muted); }

/* Timeline */
.timeline { list-style: none; padding: 0; margin: 0; display: grid; gap: 1.75rem; }
.timeline li { display: grid; grid-template-columns: 11rem 1fr; gap: 1.5rem; }
.when { font-family: var(--mono); font-size: 0.85rem; color: var(--muted); padding-top: 0.25rem; }
.org { color: var(--accent); font-weight: 600; margin: 0 0 0.6rem; }
.what ul { margin: 0; padding-left: 1.15rem; color: var(--muted); }
.what li { display: list-item; margin-bottom: 0.3rem; }

/* Grid */
.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
.grid.three { grid-template-columns: repeat(3, 1fr); }
.project { padding: 1.5rem; display: flex; flex-direction: column; transition: border-color .15s ease, transform .15s ease; }
.project:hover { border-color: var(--accent); transform: translateY(-2px); }
.project p { color: var(--muted); margin: 0 0 1rem; }
.meta { font-family: var(--mono); font-size: 0.8rem; color: var(--muted) !important; margin: 0 0 0.6rem !important; }
.tags { list-style: none; display: flex; flex-wrap: wrap; gap: 0.4rem; padding: 0; margin: 0 0 1.1rem; }
.tags li { font-family: var(--mono); font-size: 0.76rem; background: var(--accent-soft); color: var(--accent); padding: 0.2rem 0.6rem; border-radius: 999px; }
.more { margin-top: auto; font-weight: 600; text-decoration: none; }
.more::after { content: " \2192"; }
.more:hover { text-decoration: underline; }
.plain { padding: 1.4rem; }
.plain p { margin: 0; color: var(--muted); }
.plain .meta { margin-bottom: 0.6rem; }

/* Skills */
.skills { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem 3rem; }
.skills p { margin: 0; color: var(--muted); }

/* Contact + footer */
.contact { text-align: left; }
.site-footer { margin-top: clamp(3rem, 7vw, 5rem); border-top: 1px solid var(--line); padding-block: 1.75rem; color: var(--muted); font-size: 0.93rem; }
.site-footer p { margin: 0; }

/* Responsive */
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; }
  .profile { max-width: 26rem; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stats div:nth-child(2) { border-right: 0; }
  .stats div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .about, .skills { grid-template-columns: 1fr; }
  .timeline li { grid-template-columns: 1fr; gap: 0.25rem; }
  .grid, .grid.three { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .nav-toggle { display: inline-block; }
  .nav { display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; align-items: flex-start; gap: 1rem; padding: 1.25rem; background: var(--bg); border-bottom: 1px solid var(--line); }
  .nav.open { display: flex; }
}
.section-note { color: var(--muted); margin: -0.75rem 0 1.5rem; }