/* ====== Base ====== */
:root {
  --bg: #0b0d10;
  --bg-alt: #0f1318;
  --text: #e6edf3;
  --muted: #9fb0c0;
  --accent: #4dabf7;
  --card: #11161c;
  --border: #203040;
  --chip: #16202b;
  --shadow: 0 10px 30px rgba(0, 0, 0, .35);
}

:root[data-theme="light"] {
  --bg: #ffffff;
  --bg-alt: #f7f9fc;
  --text: #0f1720;
  --muted: #455a75;
  --accent: #2563eb;
  --card: #ffffff;
  --border: #e5eaf1;
  --chip: #eef2f7;
  --shadow: 0 10px 30px rgba(2, 8, 23, .06);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: radial-gradient(1200px 600px at 10% -10%, rgba(37,99,235,.12), transparent),
              radial-gradient(1000px 500px at 100% 10%, rgba(99,102,241,.12), transparent),
              var(--bg);
  line-height: 1.6;
}

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

.container {
  width: min(1100px, 92vw);
  margin-inline: auto;
}

/* ====== Header ====== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(150%) blur(10px);
  background: color-mix(in hsl, var(--bg) 88%, transparent);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: .8rem 0;
}
.brand { display: inline-flex; align-items: center; gap: .6rem; font-weight: 700; color: var(--text); }
.nav__toggle {
  display: none; background: transparent; border: 0; padding: .4rem; border-radius: .5rem;
}
.nav__burger, .nav__burger::before, .nav__burger::after {
  width: 22px; height: 2px; background: var(--text); display: block; border-radius: 2px; position: relative;
}
.nav__burger::before, .nav__burger::after { content: ""; position: absolute; left: 0; }
.nav__burger::before { top: -6px; } .nav__burger::after { top: 6px; }

.nav__list { display: flex; gap: 1rem; align-items: center; list-style: none; margin: 0; padding: 0; }
.nav__list a { color: var(--text); opacity: .9; }
.nav__list a:hover { opacity: 1; }

/* ====== Sections ====== */
.section { padding: 4.5rem 0; padding-top: 20px !important;}
.section--alt { background: var(--bg-alt); border-block: 1px solid var(--border); }
.section__header { margin-bottom: 2rem; }
.section__header h2 { margin: 0 0 .3rem 0; }

.lead { font-size: clamp(1.05rem, 1.8vw, 1.25rem); opacity: .9; }
.muted { color: var(--muted); }
.small { font-size: .9rem; }

/* ====== Hero ====== */
.hero__grid { display: grid; grid-template-columns: 1.2fr .9fr; gap: 2rem; align-items: center; }
.accent { color: var(--accent); }
.cta-row { display: flex; gap: .8rem; margin-top: 1rem; }
.meta-row { display: flex; gap: 1.4rem; margin-top: 1rem; color: var(--muted); }
.avatar {
  border-radius: 1rem; border: 1px solid var(--border); background: var(--card); box-shadow: var(--shadow);
}

/* ====== Buttons & Chips ====== */
.btn {
  display: inline-block; border: 1px solid var(--accent); background: var(--accent); color: white;
  padding: .7rem 1rem; border-radius: .7rem; font-weight: 600; box-shadow: var(--shadow);
}
.btn:hover { filter: brightness(1.05); text-decoration: none; }
.btn--ghost { background: transparent; color: var(--text); border-color: var(--border); box-shadow: none; }
.btn--ghost:hover { background: var(--chip); }

.chips { display: flex; gap: .5rem; flex-wrap: wrap; }
.chip {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .35rem .6rem; border-radius: 1rem; background: var(--chip); color: var(--muted);
  border: 1px solid var(--border);
}

/* ====== Grid & Cards ====== */
.two-col {
  display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: center;
}
.cards {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem;
}
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 1rem; overflow: hidden;
  box-shadow: var(--shadow); transition: transform .2s ease, box-shadow .2s ease;
}
.card:hover { transform: translateY(-4px); }
.card__media img { display: block; width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.card__body { padding: 1rem; }
.card__links { display: flex; gap: 1rem; margin-top: .6rem; }

/* ====== Skills ====== */
.skills { display: flex; flex-wrap: wrap; gap: .6rem; }

/* ====== Form ====== */
.form { max-width: 720px; }
.form__row { display: grid; gap: .4rem; margin-bottom: .9rem; }
.form__row input, .form__row textarea {
  width: 100%; padding: .8rem .9rem; border-radius: .6rem; border: 1px solid var(--border); background: var(--card); color: var(--text);
}

/* ====== Footer ====== */
.site-footer { padding: 1.2rem 0; border-top: 1px solid var(--border); background: color-mix(in hsl, var(--bg) 96%, transparent); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.footer-right { display: flex; gap: .8rem; }
.footer-right a { display: inline-flex; padding: .3rem; border-radius: .4rem; }
.footer-right a:hover { background: var(--chip); }
.footer-left {
  display: flex;
  align-items: center; /* centra verticalmente imagen y texto */
  gap: 8px;            /* separación entre imagen y texto */
}


/* ====== Utilities ====== */
.to-top {
  position: fixed; right: 1rem; bottom: 1rem; width: 40px; height: 40px;
  display: grid; place-items: center;
  border-radius: .6rem; border: 1px solid var(--border); background: var(--card);
  opacity: 0; pointer-events: none; transition: opacity .2s ease, transform .2s ease;
}
.to-top.show { opacity: 1; pointer-events: auto; transform: translateY(-6px); }

.reveal { opacity: 0; transform: translateY(10px); transition: opacity .5s ease, transform .5s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ====== Responsive ====== */
@media (max-width: 980px) {
  .hero__grid { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; }
  .cards { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .nav__toggle { display: inline-block; }
  .nav__list { position: absolute; right: .8rem; top: 3.2rem; background: var(--card); border: 1px solid var(--border); border-radius: .8rem; padding: .6rem; gap: .2rem; display: none; }
  .nav__list.show { display: grid; }
  .cards { grid-template-columns: 1fr; }
}

/* Motion safety */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .card, .to-top { transition: none !important; }
}