/* =============================================================================
 *  Portfolio styles. You normally don't need to edit this — change content in
 *  data.js. Colours/fonts are defined as CSS variables below if you want to
 *  retheme.
 * ===========================================================================*/

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --font-body: 'Hanken Grotesk', system-ui, sans-serif;
  --font-display: 'Hanken Grotesk', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
}

/* ---- LIGHT THEME (default) ---- */
#top, #top[data-theme="light"] {
  --bg: #FBFAF7; --bg-alt: #F4F2ED; --surface: #FFFFFF;
  --text: #1B1813; --muted: #6E6862; --faint: #948D84;
  --line: rgba(20,18,15,0.10); --line-strong: rgba(20,18,15,0.16);
  --accent: #0D9488; --accent-ink: #0F766E; --accent-contrast: #FFFFFF;
  --accent-soft: rgba(13,148,136,0.10); --accent-softer: rgba(13,148,136,0.05);
  --nav-bg: rgba(251,250,247,0.82); --chip-bg: #FFFFFF;
  --shadow-sm: 0 1px 2px rgba(20,18,15,0.06);
  --shadow-md: 0 1px 3px rgba(20,18,15,0.06), 0 16px 36px rgba(20,18,15,0.07);
  --shadow-lg: 0 2px 6px rgba(20,18,15,0.08), 0 30px 60px rgba(20,18,15,0.10);
}

/* ---- DARK THEME ---- */
#top[data-theme="dark"] {
  --bg: #14120E; --bg-alt: #1A1713; --surface: #1E1A15;
  --text: #F4F1EB; --muted: #ADA69C; --faint: #837C72;
  --line: rgba(255,255,255,0.10); --line-strong: rgba(255,255,255,0.18);
  --accent: #2DD4BF; --accent-ink: #5EEAD4; --accent-contrast: #06231F;
  --accent-soft: rgba(45,212,191,0.13); --accent-softer: rgba(45,212,191,0.06);
  --nav-bg: rgba(18,16,12,0.74); --chip-bg: #221E18;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.45);
  --shadow-md: 0 1px 3px rgba(0,0,0,0.45), 0 16px 36px rgba(0,0,0,0.50);
  --shadow-lg: 0 2px 6px rgba(0,0,0,0.50), 0 30px 60px rgba(0,0,0,0.60);
}

body { background: #FBFAF7; }

#top {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  min-height: 100vh;
  transition: background .45s ease, color .45s ease;
}

a { color: inherit; }
.hl { color: var(--accent-ink); }
strong { font-weight: 600; color: var(--text); }

/* ---- layout helpers ---- */
.wrap     { max-width: 1080px; margin: 0 auto; padding: 0 clamp(20px,5vw,40px); }
.wrap-md  { max-width: 880px;  margin: 0 auto; padding: 0 clamp(20px,5vw,40px); }
.wrap-hero{ max-width: 900px;  margin: 0 auto; padding: clamp(60px,10vw,104px) clamp(20px,5vw,40px) clamp(60px,9vw,100px); text-align: center; position: relative; }
.wrap-contact { max-width: 720px; margin: 0 auto; padding: 0 clamp(20px,5vw,40px); text-align: center; position: relative; }
.section  { padding: clamp(72px,10vw,116px) 0; position: relative; }
.section--alt { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.eyebrow { display: inline-block; font: 600 12.5px var(--font-mono); letter-spacing: .16em; text-transform: uppercase; white-space: nowrap; color: var(--accent-ink); }
.s-title { margin: 13px 0 0; font: 800 clamp(28px,4.2vw,42px) var(--font-display); letter-spacing: -.025em; line-height: 1.08; color: var(--text); text-wrap: balance; }
.s-intro { margin: 16px 0 0; max-width: 560px; font: 400 clamp(16px,2vw,18px)/1.6 var(--font-body); color: var(--muted); }

/* skip link */
.skip { position: absolute; left: 14px; top: -60px; z-index: 300; background: var(--accent); color: var(--accent-contrast); padding: 11px 18px; border-radius: 10px; font: 600 14px var(--font-body); text-decoration: none; transition: top .2s; }
.skip:focus { top: 14px; outline: none; }

/* ============ HEADER / NAV ============ */
header {
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: saturate(150%) blur(12px); -webkit-backdrop-filter: saturate(150%) blur(12px);
  background: var(--nav-bg); border-bottom: 1px solid var(--line);
}
nav { max-width: 1120px; margin: 0 auto; padding: 0 clamp(20px,5vw,40px); height: 66px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; flex: none; }
.brand-logo { width: 30px; height: 30px; border-radius: 9px; background: var(--accent); color: var(--accent-contrast); font: 700 12.5px var(--font-mono); display: flex; align-items: center; justify-content: center; }
.brand-name { font: 700 16px var(--font-display); letter-spacing: -.01em; color: var(--text); }
.nav-links { display: flex; align-items: center; gap: 22px; }
.nav-links a { color: var(--muted); text-decoration: none; font: 500 14px var(--font-body); transition: color .2s; }
.nav-links a:hover { color: var(--text); }
.nav-links a:focus-visible { color: var(--accent-ink); outline: none; }
.nav-links a[aria-current="true"] { color: var(--accent-ink); font-weight: 600; }
.nav-right { display: flex; align-items: center; gap: 12px; flex: none; }
.theme-btn { width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--line-strong); background: transparent; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: border-color .2s, transform .2s; padding: 0; }
.theme-btn:hover { border-color: var(--accent); transform: translateY(-1px); }
.theme-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.theme-btn span { display: block; width: 16px; height: 16px; border-radius: 50%; background: var(--text); box-shadow: inset -5px -3px 0 0 var(--bg); }
.nav-cta { display: inline-flex; align-items: center; background: var(--surface); color: var(--text); border: 1px solid var(--line-strong); font: 600 14px var(--font-body); padding: 9px 17px; border-radius: 10px; white-space: nowrap; text-decoration: none; transition: border-color .2s, transform .2s, box-shadow .2s; }
.nav-cta:hover { border-color: var(--accent); transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.nav-cta:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
@media (max-width: 980px) { .nav-links { display: none; } }

/* ============ HERO ============ */
#hero { position: relative; overflow: hidden; }
.hero-glow { position: absolute; inset: 0; background: radial-gradient(780px 400px at 50% -90px, var(--accent-soft), transparent 70%); pointer-events: none; }
.hero-photo-wrap { display: flex; justify-content: center; margin-bottom: 28px; }
.hero-photo { position: relative; width: 114px; height: 114px; border-radius: 50%; background: repeating-linear-gradient(135deg, var(--accent-soft) 0 9px, transparent 9px 18px); border: 1px solid var(--line); box-shadow: 0 0 0 6px var(--accent-softer), var(--shadow-sm); display: flex; align-items: center; justify-content: center; overflow: hidden; }
.hero-photo img { width: 100%; height: 100%; object-fit: cover; }
.hero-photo span { font: 500 11px var(--font-mono); color: var(--accent-ink); letter-spacing: .04em; }
.hero-role { font: 600 13px var(--font-mono); letter-spacing: .18em; text-transform: uppercase; color: var(--accent-ink); }
.hero-h1 { margin: 26px 0 0; font: 800 clamp(40px,7.2vw,72px) var(--font-display); line-height: 1.02; letter-spacing: -.035em; color: var(--text); text-wrap: balance; }
.hero-tagline { margin: 24px auto 0; max-width: 600px; font: 400 clamp(17px,2.3vw,20px) var(--font-body); line-height: 1.55; color: var(--muted); }
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 36px; }
.hero-status { margin-top: 30px; font: 500 13px var(--font-mono); letter-spacing: .02em; color: var(--faint); }

/* ============ BUTTONS ============ */
.btn { display: inline-flex; align-items: center; gap: 8px; font: 600 15px var(--font-body); padding: 14px 26px; border-radius: 11px; text-decoration: none; transition: transform .2s ease, box-shadow .2s ease, filter .2s ease, border-color .2s ease; }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.btn-primary { background: var(--accent); color: var(--accent-contrast); box-shadow: var(--shadow-sm); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); filter: brightness(1.04); }
.btn-secondary { background: var(--surface); color: var(--text); border: 1px solid var(--line-strong); }
.btn-secondary:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); border-color: var(--accent); }

/* ============ ABOUT ============ */
.about-grid { display: flex; flex-wrap: wrap; gap: clamp(28px,5vw,56px); margin-top: 34px; align-items: flex-start; }
.about-copy { flex: 1 1 360px; min-width: 280px; }
.about-copy p { font: 400 clamp(17px,2.1vw,19px)/1.65 var(--font-body); color: var(--muted); }
.about-copy p + p { margin-top: 18px; }
.about-facts { flex: 1 1 230px; min-width: 220px; display: flex; flex-direction: column; gap: 12px; }
.fact { background: var(--bg-alt); border: 1px solid var(--line); border-radius: 13px; padding: 15px 17px; }
.fact-label { font: 500 11px var(--font-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--faint); }
.fact-value { margin-top: 4px; font: 600 15.5px var(--font-body); color: var(--text); }

/* ============ SKILLS ============ */
.skill-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(244px,1fr)); gap: clamp(16px,2.4vw,22px); margin-top: 38px; }
.skill-card { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 22px; box-shadow: var(--shadow-sm); }
.skill-card-title { font: 600 12px var(--font-mono); letter-spacing: .13em; text-transform: uppercase; color: var(--accent-ink); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 15px; }
.chip { background: var(--chip-bg); border: 1px solid var(--line); color: var(--text); font: 500 13.5px var(--font-body); padding: 8px 13px; border-radius: 9px; white-space: nowrap; transition: transform .15s, border-color .15s, box-shadow .15s; }
.chip:hover { transform: translateY(-2px); border-color: var(--accent); box-shadow: var(--shadow-sm); }

/* ============ EXPERIENCE ============ */
.timeline { position: relative; margin-top: 40px; }
.timeline-line { position: absolute; left: 6px; top: 14px; bottom: 14px; width: 2px; background: linear-gradient(var(--line-strong), var(--line) 70%, transparent); }
.timeline ol { list-style: none; }
.timeline li.entry { position: relative; padding-left: 40px; padding-bottom: 34px; }
.timeline li.entry:last-child { padding-bottom: 0; }
.timeline-dot { position: absolute; left: 0; top: 6px; width: 14px; height: 14px; border-radius: 50%; background: var(--bg); border: 3px solid var(--accent); box-shadow: 0 0 0 4px var(--accent-softer); }
.entry-body { margin-left: -14px; padding: 10px 14px; border-radius: 12px; transition: background .25s; }
.entry-body:hover { background: var(--bg-alt); }
.entry-role { font: 700 clamp(18px,2.4vw,21px) var(--font-display); letter-spacing: -.01em; color: var(--text); }
.entry-meta { margin: 4px 0 0; font: 500 13px var(--font-mono); color: var(--accent-ink); }
.entry-points { margin: 12px 0 0; list-style: none; display: flex; flex-direction: column; gap: 8px; }
.entry-points li { display: flex; gap: 11px; font: 400 15.5px/1.55 var(--font-body); color: var(--muted); }
.point-dash { flex: none; margin-top: 10px; width: 14px; height: 2px; border-radius: 2px; background: var(--accent); }

/* ============ EDUCATION ============ */
.edu-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px,1fr)); gap: clamp(16px,2.4vw,22px); margin-top: 34px; }
.edu-card { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 24px; box-shadow: var(--shadow-sm); transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }
.edu-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--accent-soft); }
.edu-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.badge { font: 600 10.5px var(--font-mono); letter-spacing: .1em; text-transform: uppercase; white-space: nowrap; padding: 4px 9px; border-radius: 6px; }
.badge--current { color: var(--accent-contrast); background: var(--accent); }
.badge--done { color: var(--accent-ink); background: var(--accent-soft); }
.edu-period { font: 500 13px var(--font-mono); color: var(--muted); }
.edu-degree { margin: 15px 0 0; font: 700 21px var(--font-display); letter-spacing: -.015em; color: var(--text); }
.edu-school { margin-top: 5px; font: 500 14px var(--font-mono); color: var(--accent-ink); }
.edu-note { margin: 12px 0 0; font: 400 15px/1.55 var(--font-body); color: var(--muted); }

.subhead { margin-top: clamp(30px,4vw,42px); font: 600 12px var(--font-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--faint); }
.cert-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px,1fr)); gap: clamp(12px,1.8vw,16px); margin-top: 16px; }
.cert-card { display: flex; flex-direction: column; gap: 8px; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; box-shadow: var(--shadow-sm); text-decoration: none; transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease; }
.cert-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--accent-soft); }
.cert-card:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.cert-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; }
.cert-name { font: 700 15px var(--font-display); letter-spacing: -.01em; color: var(--text); line-height: 1.25; }
.cert-arrow { font: 600 13px var(--font-body); color: var(--faint); flex: none; }
.cert-meta { font: 500 12.5px var(--font-mono); color: var(--muted); }

/* ============ PROJECTS ============ */
.project-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px,1fr)); gap: clamp(18px,2.6vw,26px); margin-top: 38px; }
.project-card { display: flex; flex-direction: column; height: 100%; background: var(--surface); border: 1px solid var(--line); border-radius: 18px; overflow: hidden; box-shadow: var(--shadow-sm); transition: transform .28s ease, box-shadow .28s ease, border-color .28s ease; }
.project-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: var(--accent-soft); }
.project-media { position: relative; aspect-ratio: 16/10; background: repeating-linear-gradient(135deg, var(--accent-soft) 0 10px, transparent 10px 20px); border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: center; }
.project-media img { width: 100%; height: 100%; object-fit: cover; }
.project-num { position: absolute; top: 13px; left: 15px; font: 600 12px var(--font-mono); color: var(--accent-ink); }
.project-media-label { font: 500 12px var(--font-mono); color: var(--accent-ink); letter-spacing: .05em; }
.project-body { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.project-title { font: 700 20px var(--font-display); letter-spacing: -.02em; color: var(--text); }
.project-desc { margin: 10px 0 0; font: 400 15px/1.55 var(--font-body); color: var(--muted); }
.project-tags { display: flex; flex-wrap: wrap; gap: 7px; margin: 16px 0 0; }
.tag { font: 500 11.5px var(--font-mono); color: var(--muted); background: var(--accent-softer); border: 1px solid var(--line); padding: 4px 9px; border-radius: 7px; white-space: nowrap; }
.project-links { display: flex; gap: 18px; margin-top: auto; padding-top: 18px; }
.link-primary { display: inline-flex; align-items: center; gap: 5px; font: 600 14px var(--font-body); color: var(--accent-ink); text-decoration: none; transition: gap .2s; }
.link-primary:hover { gap: 9px; }
.link-muted { display: inline-flex; align-items: center; gap: 5px; font: 600 14px var(--font-body); color: var(--muted); text-decoration: none; transition: color .2s; }
.link-muted:hover { color: var(--text); }
.link-primary:focus-visible, .link-muted:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

/* ============ WRITING ============ */
.posts { margin-top: 34px; border-top: 1px solid var(--line); }
.post { display: flex; gap: clamp(14px,3vw,28px); align-items: baseline; padding: 20px 8px; border-bottom: 1px solid var(--line); text-decoration: none; transition: background .2s ease; }
.post:hover { background: var(--surface); }
.post:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; border-radius: 8px; }
.post-date { flex: none; width: 92px; font: 500 12.5px var(--font-mono); color: var(--faint); padding-top: 3px; }
.post-body { flex: 1; min-width: 0; }
.post-head { display: flex; align-items: baseline; justify-content: space-between; gap: 14px; }
.post-title { font: 700 clamp(17px,2.3vw,20px) var(--font-display); letter-spacing: -.01em; color: var(--text); }
.post-arrow { flex: none; font: 600 14px var(--font-body); color: var(--faint); }
.post-summary { margin: 6px 0 0; font: 400 14.5px/1.5 var(--font-body); color: var(--muted); }
.more-link { display: inline-flex; align-items: center; gap: 7px; font: 600 14.5px var(--font-body); color: var(--accent-ink); text-decoration: none; transition: gap .2s ease; margin-top: 22px; }
.more-link:hover { gap: 11px; }
.more-link:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
.pub { margin-top: 16px; background: var(--surface); border: 1px dashed var(--line-strong); border-radius: 14px; padding: 20px 22px; }
.pub + .pub { margin-top: 14px; }
.pub-title { font: 700 17px var(--font-display); letter-spacing: -.01em; color: var(--text); }
.pub-authors { margin-top: 6px; font: 500 13px var(--font-mono); color: var(--muted); }
.pub-links { margin-top: 13px; display: flex; gap: 16px; }
.pub-links a { font: 600 13.5px var(--font-body); color: var(--accent-ink); text-decoration: none; }
.pub-links a:hover { text-decoration: underline; }
.pub-note { margin-top: 14px; font: 400 13px/1.5 var(--font-body); color: var(--faint); }

/* ============ CONTACT ============ */
#contact { overflow: hidden; padding: clamp(80px,11vw,128px) 0; }
.contact-glow { position: absolute; inset: 0; background: radial-gradient(720px 360px at 50% 120%, var(--accent-soft), transparent 70%); pointer-events: none; }
.contact-title { margin: 14px 0 0; font: 800 clamp(30px,5vw,48px) var(--font-display); letter-spacing: -.03em; line-height: 1.05; color: var(--text); text-wrap: balance; }
.contact-blurb { margin: 18px auto 0; max-width: 480px; font: 400 clamp(16px,2.1vw,18.5px)/1.6 var(--font-body); color: var(--muted); }
.contact-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 30px; }
.btn-lg { padding: 15px 28px; font-size: 15.5px; border-radius: 12px; }
.socials { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-top: 26px; }
.social { display: inline-flex; align-items: center; gap: 7px; background: transparent; color: var(--muted); font: 500 14px var(--font-body); padding: 9px 15px; border-radius: 10px; border: 1px solid var(--line); white-space: nowrap; text-decoration: none; transition: color .2s, border-color .2s, transform .2s; }
.social:hover { color: var(--text); border-color: var(--accent); transform: translateY(-1px); }
.social:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.social .arrow { color: var(--faint); }

/* ============ FOOTER ============ */
footer { border-top: 1px solid var(--line); background: var(--bg); }
.footer-inner { max-width: 1080px; margin: 0 auto; padding: 26px clamp(20px,5vw,40px); display: flex; flex-wrap: wrap; gap: 14px; align-items: center; justify-content: space-between; }
.footer-copy { font: 500 13.5px var(--font-body); color: var(--faint); }
.footer-top { font: 500 13.5px var(--font-body); color: var(--muted); text-decoration: none; transition: color .2s; }
.footer-top:hover { color: var(--accent-ink); }
.footer-top:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

/* ============ SCROLL REVEAL ============
 * Elements rest visible; app.js plays a transient fade-in via the Web
 * Animations API as they scroll into view (never a persistent hidden state). */
[data-reveal] { opacity: 1; }