:root {
  --bg: #f6f7f4;
  --bg-2: #eef1ec;
  --surface: #ffffff;
  --surface-2: #f3f5f1;
  --text: #11140f;
  --muted: #5d665a;
  --line: #e0e5dc;
  --accent: #14a85a;
  --accent-2: #2f6bff;
  --accent-ink: #0b6b39;
  --glow: rgba(20, 168, 90, 0.16);
  --shadow: 0 1px 2px rgba(17, 20, 15, 0.04), 0 10px 30px rgba(17, 20, 15, 0.06);
  --radius: 18px;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-display: "Space Grotesk", "Inter", -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

:root[data-theme="dark"] {
  --bg: #0b0d0c;
  --bg-2: #101412;
  --surface: #131815;
  --surface-2: #19201b;
  --text: #ecf1ea;
  --muted: #95a092;
  --line: #222a24;
  --accent: #3ddc84;
  --accent-2: #6f9bff;
  --accent-ink: #3ddc84;
  --glow: rgba(61, 220, 132, 0.14);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 12px 40px rgba(0, 0, 0, 0.35);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b0d0c;
    --bg-2: #101412;
    --surface: #131815;
    --surface-2: #19201b;
    --text: #ecf1ea;
    --muted: #95a092;
    --line: #222a24;
    --accent: #3ddc84;
    --accent-2: #6f9bff;
    --accent-ink: #3ddc84;
    --glow: rgba(61, 220, 132, 0.14);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 12px 40px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 var(--font-sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; }
img { display: block; max-width: 100%; }
.container { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .container { padding: 0 32px; } }

.bg-grid {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    radial-gradient(600px 400px at 85% -5%, var(--glow), transparent 70%),
    radial-gradient(500px 360px at -10% 30%, rgba(47, 107, 255, 0.08), transparent 70%),
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: auto, auto, 56px 56px, 56px 56px;
  mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.25) 45%, transparent 80%);
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.25) 45%, transparent 80%);
  opacity: 0.6;
}

/* nav */
.nav {
  position: sticky; top: 0; z-index: 10;
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 16px; }
.brand { font-family: var(--font-mono); font-weight: 600; font-size: 0.95rem; text-decoration: none; letter-spacing: -0.01em; }
.brand span { color: var(--accent-ink); }
.nav-links { display: none; gap: 4px; }
.nav-links a {
  text-decoration: none; color: var(--muted); font-size: 0.9rem; padding: 6px 12px; border-radius: 999px;
  transition: color 0.15s, background 0.15s;
}
.nav-links a:hover { color: var(--text); background: var(--surface-2); }
@media (min-width: 820px) { .nav-links { display: flex; } }
.icon-btn {
  width: 38px; height: 38px; border-radius: 999px; border: 1px solid var(--line);
  background: var(--surface); color: var(--text); display: grid; place-items: center; cursor: pointer;
}
.icon-btn svg { width: 18px; height: 18px; }
.icon-btn .moon { display: none; }
:root[data-theme="dark"] .icon-btn .sun { display: none; }
:root[data-theme="dark"] .icon-btn .moon { display: block; }

/* hero */
.hero { padding: 72px 0 40px; display: grid; gap: 40px; align-items: center; }
@media (min-width: 860px) { .hero { grid-template-columns: 1.35fr 1fr; padding: 104px 0 64px; } }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 0.8rem; color: var(--muted);
  padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px; background: var(--surface);
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px var(--glow); }
.hero h1 {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(2.6rem, 7vw, 4.6rem); line-height: 1.02; letter-spacing: -0.035em;
  margin: 22px 0 28px;
}
.hero h1 .grad {
  background: linear-gradient(100deg, var(--accent) 0%, var(--accent-2) 90%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lead { font-size: 1.15rem; color: var(--muted); max-width: 560px; margin: 0 0 28px; }
.lead strong { color: var(--text); font-weight: 600; }
.cta { display: flex; flex-wrap: wrap; gap: 10px; }

.btn {
  display: inline-flex; align-items: center; gap: 8px; text-decoration: none; cursor: pointer;
  font: 500 0.92rem/1 var(--font-sans); padding: 12px 18px; border-radius: 12px;
  border: 1px solid var(--line); background: var(--surface); color: var(--text);
  transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s;
}
.btn:hover { transform: translateY(-1px); border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); box-shadow: var(--shadow); }
.btn svg { width: 17px; height: 17px; flex: none; }
.btn-primary { background: var(--text); color: var(--bg); border-color: var(--text); }
.btn-primary:hover { border-color: var(--text); }
.btn-sm { padding: 9px 14px; font-size: 0.85rem; border-radius: 10px; }

.portrait { position: relative; justify-self: center; width: min(340px, 82vw); }
.portrait::before {
  content: ""; position: absolute; inset: -14px; border-radius: 34px; z-index: -1;
  background: conic-gradient(from 210deg, var(--accent), var(--accent-2), var(--accent));
  filter: blur(26px); opacity: 0.35;
}
.portrait img {
  width: 100%; height: auto; aspect-ratio: 4 / 5; object-fit: cover; object-position: 50% 22%;
  border-radius: 28px; border: 1px solid var(--line); box-shadow: var(--shadow);
}
.portrait .tag {
  position: absolute; left: -14px; bottom: 26px;
  display: flex; align-items: center; gap: 10px; padding: 10px 14px;
  background: var(--surface); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow);
  font-size: 0.85rem;
}
.portrait .tag img { width: 30px; height: 30px; border-radius: 8px; aspect-ratio: 1; border: 0; box-shadow: none; }
.portrait .tag b { display: block; font-size: 0.9rem; }
.portrait .tag small { color: var(--muted); }

.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 8px; }
@media (min-width: 720px) { .stats { grid-template-columns: repeat(4, 1fr); } }
.stat { padding: 18px 20px; border: 1px solid var(--line); border-radius: 16px; background: var(--surface); }
.stat b { display: block; font-family: var(--font-display); font-size: 1.9rem; letter-spacing: -0.03em; line-height: 1.1; }
.stat span { color: var(--muted); font-size: 0.88rem; }

/* sections */
section.block { padding: 64px 0 8px; scroll-margin-top: 70px; }
.section-head { display: flex; align-items: baseline; gap: 14px; margin-bottom: 26px; }
.section-head .num { font-family: var(--font-mono); color: var(--accent-ink); font-size: 0.85rem; }
.section-head h2 { font-family: var(--font-display); font-size: clamp(1.6rem, 3.4vw, 2.1rem); letter-spacing: -0.03em; margin: 0; }
.section-head .rule { flex: 1; height: 1px; background: var(--line); align-self: center; }

.about { font-size: 1.08rem; max-width: 820px; margin: 0; color: var(--muted); }
.about strong { color: var(--text); font-weight: 600; }

/* timeline */
.timeline { position: relative; display: grid; gap: 20px; }
@media (min-width: 720px) {
  .timeline { padding-left: 28px; }
  .timeline::before { content: ""; position: absolute; left: 6px; top: 10px; bottom: 10px; width: 2px; background: linear-gradient(var(--accent), var(--line) 60%); border-radius: 2px; }
  .job { position: relative; }
  .job::before { content: ""; position: absolute; left: -28px; top: 28px; width: 14px; height: 14px; border-radius: 50%; background: var(--bg); border: 3px solid var(--accent); }
  .job.past::before { border-color: var(--line); }
}

.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow);
}
@media (min-width: 720px) { .card { padding: 28px 30px; } }
.job-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 16px; align-items: baseline; }
.job h3, .project h3 { font-family: var(--font-display); font-size: 1.3rem; letter-spacing: -0.02em; margin: 0; }
.role-line { color: var(--muted); font-size: 0.95rem; }
.when { font-family: var(--font-mono); font-size: 0.8rem; color: var(--muted); padding: 4px 10px; border: 1px solid var(--line); border-radius: 999px; white-space: nowrap; }
.when.now { color: var(--accent-ink); border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); background: color-mix(in srgb, var(--accent) 8%, transparent); }
.card ul { margin: 16px 0 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.card li { position: relative; padding-left: 20px; }
.card li::before { content: ""; position: absolute; left: 2px; top: 0.72em; width: 7px; height: 7px; border-radius: 2px; background: var(--accent); opacity: 0.85; }
.card li strong { font-weight: 600; }
.subprojects { display: grid; gap: 10px; margin-top: 14px; }
@media (min-width: 720px) { .subprojects { grid-template-columns: 1fr 1fr; } }
.sub {
  padding: 14px 16px; border-radius: 14px; background: var(--surface-2); border: 1px solid var(--line); font-size: 0.93rem;
}
.sub b { display: block; margin-bottom: 4px; font-family: var(--font-display); font-size: 1rem; }
.sub p { margin: 0; color: var(--muted); }
.links-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }

.mini-grid { display: grid; gap: 20px; }
@media (min-width: 720px) { .mini-grid { grid-template-columns: 1fr 1fr; } }

/* projects */
.projects { display: grid; gap: 20px; }
.project { position: relative; overflow: hidden; }
.project.featured::after {
  content: ""; position: absolute; right: -120px; top: -120px; width: 320px; height: 320px; border-radius: 50%;
  background: radial-gradient(circle, var(--glow), transparent 70%); pointer-events: none;
}
.project-head { display: flex; gap: 16px; align-items: center; }
.app-icon { width: 60px; height: 60px; border-radius: 15px; flex: none; border: 1px solid var(--line); box-shadow: var(--shadow); }
.app-icon.mono {
  display: grid; place-items: center; font-family: var(--font-display); font-weight: 700; font-size: 1.5rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; border: 0;
}
.pill { display: inline-block; font-family: var(--font-mono); font-size: 0.72rem; padding: 3px 9px; border-radius: 999px; background: color-mix(in srgb, var(--accent) 12%, transparent); color: var(--accent-ink); margin-left: 8px; vertical-align: middle; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
.tag-chip { font-family: var(--font-mono); font-size: 0.75rem; padding: 4px 10px; border-radius: 8px; background: var(--surface-2); border: 1px solid var(--line); color: var(--muted); }

/* skills */
.skills { display: grid; gap: 14px; }
@media (min-width: 640px) { .skills { grid-template-columns: 1fr 1fr; } }
@media (min-width: 980px) { .skills { grid-template-columns: 1fr 1fr 1fr; } }
.skill-card { padding: 20px; }
.skill-card h4 { margin: 0 0 12px; font-size: 0.8rem; font-family: var(--font-mono); font-weight: 500; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent-ink); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { font-size: 0.85rem; padding: 4px 10px; border-radius: 8px; background: var(--surface-2); border: 1px solid var(--line); }

.info-card h3 { font-family: var(--font-display); font-size: 1.15rem; margin: 6px 0 4px; letter-spacing: -0.02em; }
.info-card p { margin: 0; color: var(--muted); font-size: 0.95rem; }
.info-card .kicker { font-family: var(--font-mono); font-size: 0.75rem; color: var(--accent-ink); text-transform: uppercase; letter-spacing: 0.08em; }
.info-card a { color: var(--accent-ink); text-underline-offset: 3px; }

/* contact */
.contact {
  margin: 72px 0 0; padding: 40px 24px; text-align: center; border-radius: 28px;
  background:
    radial-gradient(600px 240px at 50% 0%, var(--glow), transparent 70%),
    var(--surface);
  border: 1px solid var(--line);
}
.contact h2 { font-family: var(--font-display); font-size: clamp(1.8rem, 4vw, 2.6rem); letter-spacing: -0.03em; margin: 0 0 10px; }
.contact p { color: var(--muted); margin: 0 auto 24px; max-width: 520px; }
.contact .cta { justify-content: center; }

footer { padding: 36px 0 48px; color: var(--muted); font-size: 0.85rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
footer span:last-child { font-family: var(--font-mono); }

/* reveal */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn { transition: none; }
}

@media print {
  :root, :root[data-theme="dark"] {
    --bg: #fff; --surface: #fff; --surface-2: #fff; --text: #000; --muted: #333; --line: #ccc; --shadow: none;
    --accent: #0b6b39; --accent-ink: #0b6b39;
  }
  .nav, .bg-grid, .cta, .contact, .portrait, .no-print { display: none !important; }
  body { font-size: 10.5pt; }
  .hero { padding: 0 0 8px; display: block; }
  .hero h1 { font-size: 26pt; margin: 0 0 4px; }
  .hero h1 .grad { color: #000; background: none; }
  .stats { display: none; }
  section.block { padding: 14px 0 0; }
  .section-head { margin-bottom: 8px; }
  .card { box-shadow: none; padding: 10px 0; border: 0; border-bottom: 1px solid var(--line); border-radius: 0; break-inside: avoid; }
  .timeline { padding: 0; }
  .timeline::before, .job::before { display: none; }
  .reveal { opacity: 1; transform: none; }
  a { text-decoration: none; }
}

.langs { display: grid; gap: 14px; }
.lang { display: grid; grid-template-columns: 1fr auto; gap: 6px 12px; align-items: baseline; }
.lang-name { font-family: var(--font-display); font-weight: 600; font-size: 1.05rem; }
.lang-level { font-family: var(--font-mono); font-size: 0.78rem; color: var(--muted); }
.lang .bar { grid-column: 1 / -1; height: 6px; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--line); overflow: hidden; }
.lang .bar i { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--accent), var(--accent-2)); }
@media print { .lang .bar { display: none; } }
#education .info-card, #certificates .info-card, #languages .info-card { max-width: 640px; }

.org { display: flex; align-items: center; gap: 14px; }
.org-logo {
  width: 48px; height: 48px; flex: none; border-radius: 12px; object-fit: contain;
  background: #fff; padding: 6px; border: 1px solid var(--line);
}
.org-logo.dark { background: #000; padding: 0; }
.info-card .org h3 { margin-top: 2px; }
@media (min-width: 720px) { .timeline .mini-grid .job:nth-child(2)::before { display: none; } }

.nav-actions { display: flex; gap: 8px; }
.lang-btn { font: 600 0.78rem/1 var(--font-mono); letter-spacing: 0.04em; }