:root {
  --bg: #0b1020;
  --bg-2: #121936;
  --card: rgba(255, 255, 255, 0.05);
  --border: rgba(255, 255, 255, 0.1);
  --text: #e8ecf8;
  --muted: #9aa5c7;
  --accent: #4cc9f0;
  --accent-2: #7b61ff;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

[data-theme="light"] {
  --bg: #f6f8ff;
  --bg-2: #e9edfb;
  --card: #ffffff;
  --border: rgba(20, 30, 70, 0.12);
  --text: #131a35;
  --muted: #55608a;
  --accent: #0072d6;
  --accent-2: #6a4cff;
  --shadow: 0 10px 30px rgba(20, 30, 70, 0.1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background:
    radial-gradient(900px 500px at 85% -10%, rgba(123, 97, 255, 0.25), transparent),
    radial-gradient(700px 400px at -10% 20%, rgba(76, 201, 240, 0.18), transparent),
    var(--bg);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.65;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
small { color: var(--muted); }

.container { width: min(1100px, 92%); margin-inline: auto; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 10px; top: 10px; background: var(--accent); color: #000; padding: 8px 12px; z-index: 100; border-radius: 8px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* Header */
.header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--bg) 70%, transparent);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { font-weight: 800; font-size: 1.4rem; color: var(--text); }
.logo span { color: var(--accent); }
.menu { display: flex; gap: 1.5rem; }
.menu a { color: var(--muted); font-size: 0.95rem; transition: color .2s; }
.menu a:hover, .menu a.active { color: var(--accent); text-decoration: none; }
.nav-actions { display: flex; gap: .5rem; }
.icon-btn {
  background: var(--card); border: 1px solid var(--border); color: var(--text);
  width: 40px; height: 40px; border-radius: 10px; cursor: pointer; font-size: 1.1rem;
}
.burger { display: none; }

/* Hero */
.hero {
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 3rem; align-items: center;
  min-height: calc(100vh - 64px); padding-block: 3rem;
}
.eyebrow { color: var(--accent); font-weight: 600; letter-spacing: .05em; }
.hero h1 { font-size: clamp(2.2rem, 6vw, 4rem); line-height: 1.1; margin: .3rem 0; }
.hero h2 { font-size: clamp(1.1rem, 3vw, 1.6rem); color: var(--muted); font-weight: 500; }
#typed {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent; font-weight: 700;
}
.hero .typing { margin-top: .4rem; color: var(--muted); font-size: clamp(1rem, 2.5vw, 1.25rem); min-height: 1.8em; }
.caret { animation: blink 1s steps(1) infinite; color: var(--accent); }
@keyframes blink { 50% { opacity: 0; } }
.lead { margin: 1.2rem 0; color: var(--muted); max-width: 60ch; }
.lead strong { color: var(--text); }
.cta { display: flex; flex-wrap: wrap; gap: .8rem; margin: 1.5rem 0; }
.btn {
  padding: .7rem 1.3rem; border-radius: 999px; border: 1px solid var(--border);
  color: var(--text); background: var(--card); font-weight: 600; transition: transform .2s, box-shadow .2s;
}
.btn:hover { transform: translateY(-2px); text-decoration: none; box-shadow: var(--shadow); }
.btn.primary { background: linear-gradient(90deg, var(--accent), var(--accent-2)); color: #fff; border: none; }
.stats { display: flex; gap: 2rem; margin-top: 1.5rem; }
.stats strong { display: block; font-size: 1.8rem; color: var(--accent); }
.stats span { color: var(--muted); font-size: .85rem; }

.hero-photo { display: grid; place-items: center; overflow: hidden; }
.photo-ring {
  width: min(320px, 70vw); aspect-ratio: 1; border-radius: 50%; padding: 6px;
  background: conic-gradient(var(--accent), var(--accent-2), var(--accent));
  animation: spin 12s linear infinite;
}
.photo-ring > * { animation: spin 12s linear infinite reverse; }
.photo-ring img, .photo-fallback {
  width: 100%; height: 100%; border-radius: 50%; object-fit: cover; object-position: center 12%; background: var(--bg-2);
}
.photo-fallback { display: grid; place-items: center; font-size: 4rem; font-weight: 800; color: var(--accent); }
@keyframes spin { to { transform: rotate(360deg); } }

/* Sections */
.section { padding-block: 5rem; }
.title { font-size: clamp(1.6rem, 4vw, 2.2rem); margin-bottom: 2rem; display: flex; align-items: center; gap: .6rem; }
.title span { color: var(--accent); font-size: 1.1rem; font-family: ui-monospace, Consolas, monospace; }
.title::after { content: ""; flex: 1; height: 1px; background: var(--border); }
.muted { color: var(--muted); margin-bottom: 1.5rem; }

.about p { color: var(--muted); max-width: 80ch; margin-bottom: 1rem; }
.about strong { color: var(--text); }

.cards { display: grid; gap: 1.2rem; margin-top: 1.5rem; }
.cards.three { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.cards.four { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.4rem; transition: transform .25s, border-color .25s, box-shadow .25s;
}
.card:hover { transform: translateY(-4px); border-color: var(--accent); box-shadow: var(--shadow); }
.card h3 { margin-bottom: .6rem; font-size: 1.1rem; }
.card p { color: var(--muted); font-size: .95rem; }

.tags { display: flex; flex-wrap: wrap; gap: .5rem; margin: .8rem 0; }
.tags li {
  font-size: .8rem; padding: .25rem .7rem; border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 14%, transparent); color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
}

.cert .badge {
  display: inline-block; font-weight: 800; padding: .3rem .8rem; border-radius: 10px; margin-bottom: .6rem;
  background: linear-gradient(90deg, var(--accent), var(--accent-2)); color: #fff;
}
.cert.wip { border-style: dashed; }
.cert.wip .badge { background: transparent; color: var(--accent); border: 1px dashed var(--accent); }

/* Timeline */
.timeline { position: relative; padding-left: 1.5rem; border-left: 2px solid var(--border); }
.timeline > li { position: relative; display: grid; grid-template-columns: 180px 1fr; gap: 1.5rem; padding-bottom: 2.5rem; }
.timeline > li::before {
  content: ""; position: absolute; left: calc(-1.5rem - 7px); top: .45rem; width: 12px; height: 12px;
  border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 25%, transparent);
}
.when { color: var(--accent); font-family: ui-monospace, Consolas, monospace; font-size: .9rem; padding-top: .2rem; }
.what h3 { margin-bottom: .5rem; }
.what p { color: var(--muted); }
.what .experience-context { margin-bottom: .8rem; }
.responsibilities { color: var(--muted); padding-left: 1.2rem; margin-top: .7rem; display: grid; gap: .5rem; }
.responsibilities li::marker { color: var(--accent); }
details { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: .8rem 1rem; margin-top: .6rem; }
summary { cursor: pointer; font-weight: 600; }
details p { margin-top: .5rem; }

.project a { font-weight: 600; font-size: .9rem; }

/* Contact */
.contact { text-align: center; padding: 2.5rem 1rem; border: 1px solid var(--border); border-radius: var(--radius); background: var(--card); }
.contact p { color: var(--muted); margin-bottom: 1.2rem; }
.contact-list { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem; }
.contact-list a { display: inline-block; padding: .6rem 1.1rem; border: 1px solid var(--border); border-radius: 999px; color: var(--text); }
.contact-list a:hover { border-color: var(--accent); text-decoration: none; }

.footer { text-align: center; padding: 2rem 1rem; color: var(--muted); border-top: 1px solid var(--border); font-size: .85rem; }

/* Reveal */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* Responsivo */
@media (max-width: 820px) {
  .burger { display: inline-block; }
  .menu {
    position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; gap: 0;
    background: var(--bg-2); border-bottom: 1px solid var(--border);
    max-height: 0; overflow: hidden; transition: max-height .3s;
  }
  .menu.open { max-height: 400px; }
  .menu a { display: block; padding: .9rem 1.5rem; }
  .hero { grid-template-columns: 1fr; text-align: center; }
  .hero-photo { order: -1; }
  .lead { margin-inline: auto; }
  .cta, .stats { justify-content: center; }
  .timeline > li { grid-template-columns: 1fr; gap: .3rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}