:root {
  --bg: #0a0e1a;
  --bg-alt: #0f1525;
  --card: #131a2c;
  --card-hover: #182135;
  --text: #e6ebf5;
  --text-dim: #9aa6c0;
  --border: #1e293f;
  --accent: #5eead4;
  --accent2: #38bdf8;
  --shadow: 0 10px 40px rgba(0,0,0,.4);
  --radius: 16px;
  --maxw: 1080px;
}

[data-theme="light"] {
  --bg: #f6f8fc;
  --bg-alt: #eef2f9;
  --card: #ffffff;
  --card-hover: #f4f7fc;
  --text: #0f1525;
  --text-dim: #56607a;
  --border: #e2e8f0;
  --shadow: 0 10px 40px rgba(20,40,80,.08);
}

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

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background .3s, color .3s;
  overflow-x: hidden;
}

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

a { color: inherit; text-decoration: none; }

/* ===== Navbar ===== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, background .3s;
}
.nav.scrolled { border-bottom-color: var(--border); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.nav__logo { font-weight: 800; font-size: 1.4rem; letter-spacing: -.02em; }
.nav__logo span { color: var(--accent); }
.nav__links { display: flex; gap: 28px; }
.nav__links a { color: var(--text-dim); font-size: .92rem; font-weight: 500; transition: color .2s; }
.nav__links a:hover { color: var(--accent); }
.nav__links a.nav__family { color: var(--accent); }
.nav__links a.nav__family:hover { opacity: .8; }
.nav__actions { display: flex; align-items: center; gap: 8px; }
.btn-icon {
  background: var(--card); border: 1px solid var(--border); color: var(--text);
  width: 38px; height: 38px; border-radius: 10px; cursor: pointer; font-size: 1rem;
  display: grid; place-items: center; transition: all .2s; font-weight: 600;
}
.btn-icon:hover { background: var(--card-hover); border-color: var(--accent); }
.nav__burger { display: none; }

/* ===== Buttons ===== */
.btn {
  display: inline-block; padding: 12px 24px; border-radius: 12px; font-weight: 600;
  font-size: .95rem; cursor: pointer; transition: transform .2s, box-shadow .2s, background .2s; border: 1px solid transparent;
}
.btn:hover { transform: translateY(-2px); }
.btn--primary { background: linear-gradient(135deg, var(--accent), var(--accent2)); color: #04121a; box-shadow: 0 8px 24px color-mix(in srgb, var(--accent) 30%, transparent); }
.btn--ghost { background: transparent; border-color: var(--border); color: var(--text); }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn--lg { padding: 16px 32px; font-size: 1.05rem; }

/* ===== Hero ===== */
.hero { min-height: 100vh; display: flex; align-items: center; padding-top: 64px; position: relative; }
.hero::before {
  content: ''; position: absolute; inset: 0; z-index: -1;
  background: radial-gradient(circle at 75% 30%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 45%),
              radial-gradient(circle at 20% 70%, color-mix(in srgb, var(--accent2) 12%, transparent), transparent 45%);
}
.hero__inner { display: grid; grid-template-columns: 1.5fr 1fr; gap: 48px; align-items: center; width: 100%; }
.hero__eyebrow { color: var(--accent); font-weight: 600; margin-bottom: 12px; }
.hero__name { font-size: clamp(2.6rem, 6vw, 4.4rem); font-weight: 800; letter-spacing: -.03em; line-height: 1.05; }
.hero__role { font-size: clamp(1.3rem, 3vw, 2rem); color: var(--text-dim); font-weight: 600; margin-top: 6px; }
.hero__loc { color: var(--text-dim); margin-top: 14px; }
.hero__tagline { margin-top: 20px; max-width: 540px; color: var(--text-dim); font-size: 1.05rem; }
.hero__cta { display: flex; gap: 14px; margin-top: 32px; flex-wrap: wrap; }
.hero__socials { display: flex; gap: 14px; margin-top: 32px; }
.hero__socials a {
  width: 44px; height: 44px; border-radius: 50%; background: var(--card); border: 1px solid var(--border);
  display: grid; place-items: center; font-weight: 700; transition: all .2s;
}
.hero__socials a:hover { transform: translateY(-3px); border-color: var(--accent); color: var(--accent); }
.hero__avatar { display: grid; place-items: center; }
.avatar {
  width: 240px; height: 240px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: grid; place-items: center; font-size: 5rem; font-weight: 800; color: #04121a;
  box-shadow: 0 20px 60px color-mix(in srgb, var(--accent) 30%, transparent);
  animation: float 5s ease-in-out infinite;
}
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-16px); } }

/* ===== Sections ===== */
.section { padding: 96px 0; }
.section--alt { background: var(--bg-alt); }
.section__title { font-size: clamp(1.6rem, 4vw, 2.2rem); font-weight: 800; letter-spacing: -.02em; margin-bottom: 40px; display: flex; align-items: baseline; gap: 12px; }
.section__title--sub { margin-top: 64px; }
.section__num { color: var(--accent); font-size: .9rem; font-weight: 600; font-family: monospace; }

/* ===== About ===== */
.about { max-width: 760px; }
.about p { color: var(--text-dim); font-size: 1.08rem; margin-bottom: 18px; }
.about strong { color: var(--text); }
.about__highlights { list-style: none; display: flex; gap: 40px; margin-top: 36px; flex-wrap: wrap; }
.about__highlights li { display: flex; flex-direction: column; }
.about__highlights .num { font-size: 2.4rem; font-weight: 800; color: var(--accent); line-height: 1; }
.about__highlights small { color: var(--text-dim); margin-top: 6px; }

/* ===== Timeline ===== */
.timeline { position: relative; padding-left: 32px; }
.timeline::before { content: ''; position: absolute; left: 7px; top: 6px; bottom: 6px; width: 2px; background: var(--border); }
.timeline__item { position: relative; margin-bottom: 28px; }
.timeline__dot { position: absolute; left: -32px; top: 6px; width: 16px; height: 16px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px var(--bg); }
.timeline__card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px 28px; transition: transform .2s, border-color .2s; }
.timeline__card:hover { transform: translateX(4px); border-color: var(--accent); }
.timeline__head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.timeline__head h3 { font-size: 1.2rem; }
.timeline__org { color: var(--accent); font-weight: 600; margin-top: 4px; }
.timeline__meta { color: var(--text-dim); font-size: .88rem; margin-top: 4px; }
.timeline__list { margin-top: 14px; padding-left: 18px; color: var(--text-dim); }
.timeline__list li { margin-bottom: 6px; }
.badge { font-size: .7rem; font-weight: 700; padding: 3px 10px; border-radius: 999px; text-transform: uppercase; letter-spacing: .05em; }
.badge--live { background: color-mix(in srgb, var(--accent) 20%, transparent); color: var(--accent); }

/* ===== Skills ===== */
.skills { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px 40px; max-width: 760px; }
.skill__head { display: flex; justify-content: space-between; font-weight: 600; margin-bottom: 10px; }
.skill__bar { height: 8px; background: var(--border); border-radius: 999px; overflow: hidden; }
.skill__bar i { display: block; height: 100%; width: 0; border-radius: 999px; background: linear-gradient(90deg, var(--accent), var(--accent2)); transition: width 1.2s cubic-bezier(.2,.8,.2,1); }
.skill__bar.animate i { width: var(--w); }

/* ===== Certs ===== */
.certs { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.cert { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 22px; font-weight: 500; transition: transform .2s, border-color .2s; }
.cert:hover { transform: translateY(-4px); border-color: var(--accent); }
.edu { display: flex; gap: 18px; align-items: center; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px 28px; max-width: 560px; }
.edu__icon { font-size: 2.4rem; }
.edu h3 { font-size: 1.2rem; }
.edu p { color: var(--text-dim); }

/* ===== Contact ===== */
.section--contact { text-align: center; padding: 120px 0; }
.contact h2 { font-size: clamp(2rem, 5vw, 3rem); font-weight: 800; letter-spacing: -.02em; margin: 8px 0 16px; }
.contact__lead { color: var(--text-dim); max-width: 480px; margin: 0 auto 36px; font-size: 1.1rem; }
.contact .section__num { display: block; margin-bottom: 4px; }
.contact__links { display: flex; gap: 28px; justify-content: center; margin-top: 28px; }
.contact__links a { color: var(--text-dim); font-weight: 500; transition: color .2s; }
.contact__links a:hover { color: var(--accent); }

/* ===== Footer ===== */
.footer { padding: 32px 0; border-top: 1px solid var(--border); text-align: center; color: var(--text-dim); font-size: .9rem; }

/* ===== Reveal animation ===== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ===== Responsive ===== */
@media (max-width: 820px) {
  .hero__inner { grid-template-columns: 1fr; text-align: center; gap: 32px; }
  .hero__avatar { order: -1; }
  .avatar { width: 160px; height: 160px; font-size: 3.4rem; }
  .hero__cta, .hero__socials, .about__highlights { justify-content: center; }
  .skills { grid-template-columns: 1fr; }
  .nav__links {
    position: fixed; top: 64px; right: 0; flex-direction: column; gap: 0;
    background: var(--card); border: 1px solid var(--border); border-radius: 0 0 0 16px;
    padding: 12px; min-width: 200px; transform: translateX(110%); transition: transform .3s; box-shadow: var(--shadow);
  }
  .nav__links.open { transform: none; }
  .nav__links a { padding: 12px 16px; }
  .nav__burger { display: grid; }
}