/* Sebastian Villegas — sitio personal */
:root {
  --bg: #0a0f1c;
  --bg-alt: #0f1628;
  --card: #141d33;
  --border: #223052;
  --text: #e8edf7;
  --muted: #9aa7c0;
  --accent: #37c3ae;
  --accent-soft: rgba(55, 195, 174, 0.12);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* Idiomas: por defecto ES; body.lang-en muestra EN */
.en { display: none; }
body.lang-en .es { display: none; }
body.lang-en .en { display: inline; }
body.lang-en .en.block { display: block; }

a { color: var(--accent); text-decoration: none; }
a:hover { opacity: 0.85; }

img { max-width: 100%; }

.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* ---------- Nav ---------- */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(10, 15, 28, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1080px; margin: 0 auto; padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.logo {
  font-weight: 800; font-size: 1.2rem; color: var(--text);
  letter-spacing: 1px;
}
.logo span { color: var(--accent); }
.nav-links { display: flex; gap: 26px; align-items: center; list-style: none; }
.nav-links a { color: var(--muted); font-size: 0.92rem; font-weight: 500; }
.nav-links a:hover { color: var(--text); }
.lang-btn {
  background: var(--card); border: 1px solid var(--border); color: var(--text);
  padding: 5px 14px; border-radius: 20px; cursor: pointer; font-size: 0.85rem;
  font-family: var(--font);
}
.lang-btn:hover { border-color: var(--accent); }
.nav-toggle { display: none; background: none; border: none; color: var(--text); font-size: 1.5rem; cursor: pointer; }

/* ---------- Hero ---------- */
.hero {
  min-height: 92vh; display: flex; align-items: center;
  background:
    radial-gradient(ellipse 60% 50% at 70% 20%, rgba(55,195,174,0.10), transparent),
    radial-gradient(ellipse 50% 40% at 20% 80%, rgba(76,110,245,0.08), transparent),
    var(--bg);
  padding-top: 80px;
}
.eyebrow {
  color: var(--accent); font-size: 0.85rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 2px; margin-bottom: 16px;
}
h1 { font-size: clamp(2.4rem, 6vw, 4rem); font-weight: 800; line-height: 1.1; margin-bottom: 22px; }
.hero p.lead { font-size: 1.15rem; color: var(--muted); max-width: 640px; margin-bottom: 34px; }
.btn-row { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 12px 28px; border-radius: 8px;
  font-weight: 600; font-size: 0.95rem; border: 1px solid transparent;
  cursor: pointer; font-family: var(--font); transition: transform 0.15s;
}
.btn:hover { transform: translateY(-2px); opacity: 1; }
.btn-primary { background: var(--accent); color: #06251f; }
.btn-outline { border-color: var(--border); color: var(--text); background: transparent; }
.btn-outline:hover { border-color: var(--accent); }

/* ---------- Secciones ---------- */
section { padding: 90px 0; }
section.alt { background: var(--bg-alt); }
.section-eyebrow {
  color: var(--accent); font-size: 0.8rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 2px; margin-bottom: 10px;
}
h2 { font-size: clamp(1.7rem, 4vw, 2.4rem); font-weight: 700; margin-bottom: 14px; }
h3 { font-size: 1.25rem; font-weight: 600; margin-bottom: 12px; }
.section-sub { color: var(--muted); max-width: 660px; margin-bottom: 40px; }

/* ---------- Stats ---------- */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 48px; }
.stat { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 26px; text-align: center; }
.stat .num { font-size: 2.2rem; font-weight: 800; color: var(--accent); }
.stat .label { color: var(--muted); font-size: 0.88rem; margin-top: 6px; }

/* ---------- Cards ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 14px;
  padding: 30px; transition: border-color 0.2s, transform 0.2s;
}
.card:hover { border-color: var(--accent); transform: translateY(-4px); }
.card .icon {
  width: 46px; height: 46px; border-radius: 10px; background: var(--accent-soft);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; margin-bottom: 18px;
}
.card p { color: var(--muted); font-size: 0.94rem; }

/* ---------- Lista con check ---------- */
.check-list { list-style: none; margin: 26px 0; }
.check-list li { padding-left: 30px; position: relative; margin-bottom: 14px; color: var(--muted); }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 700; }

/* ---------- Blog ---------- */
.post-card { display: flex; flex-direction: column; }
.post-card .meta { font-size: 0.8rem; color: var(--muted); margin-bottom: 10px; text-transform: uppercase; letter-spacing: 1px; }
.post-card h3 a { color: var(--text); }
.post-card h3 a:hover { color: var(--accent); }
.post-card .read-more { margin-top: auto; padding-top: 16px; font-weight: 600; font-size: 0.9rem; }

/* Artículo */
.article { max-width: 720px; margin: 0 auto; padding: 140px 24px 80px; }
.article .meta { color: var(--muted); font-size: 0.9rem; margin-bottom: 30px; }
.article h1 { font-size: clamp(1.9rem, 5vw, 2.6rem); }
.article h2 { font-size: 1.5rem; margin: 40px 0 14px; }
.article p { margin-bottom: 20px; color: #c6cfe2; }
.article ul, .article ol { margin: 0 0 20px 24px; color: #c6cfe2; }
.article li { margin-bottom: 8px; }
.article blockquote {
  border-left: 3px solid var(--accent); padding: 4px 0 4px 20px;
  margin: 26px 0; color: var(--muted); font-style: italic;
}
.article .back-link { display: inline-block; margin-bottom: 28px; font-size: 0.9rem; }

/* ---------- Newsletter ---------- */
.newsletter-box {
  background: linear-gradient(135deg, var(--card), #17253f);
  border: 1px solid var(--border); border-radius: 16px;
  padding: 48px; text-align: center;
}
.newsletter-form { display: flex; gap: 12px; max-width: 480px; margin: 28px auto 0; }
.newsletter-form input {
  flex: 1; padding: 12px 18px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--bg); color: var(--text); font-family: var(--font); font-size: 0.95rem;
}
.newsletter-form input:focus { outline: none; border-color: var(--accent); }
.form-note { color: var(--muted); font-size: 0.8rem; margin-top: 14px; }

/* ---------- Contacto ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; }
.contact-item { margin-bottom: 22px; }
.contact-item .label { font-size: 0.8rem; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; }
.contact-item .value { font-size: 1.05rem; font-weight: 500; }
.contact-form input, .contact-form textarea {
  width: 100%; padding: 12px 16px; margin-bottom: 16px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--card); color: var(--text);
  font-family: var(--font); font-size: 0.95rem;
}
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--accent); }
.contact-form textarea { min-height: 130px; resize: vertical; }
.socials { display: flex; gap: 16px; margin-top: 24px; }
.socials a {
  width: 42px; height: 42px; border-radius: 10px; background: var(--card);
  border: 1px solid var(--border); display: flex; align-items: center;
  justify-content: center; font-weight: 700; color: var(--text); font-size: 0.85rem;
}
.socials a:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Footer ---------- */
footer { border-top: 1px solid var(--border); padding: 36px 0; text-align: center; color: var(--muted); font-size: 0.85rem; }

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  .nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0;
    background: var(--bg-alt); flex-direction: column; padding: 20px; gap: 18px;
    border-bottom: 1px solid var(--border); }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .grid-3, .stats, .contact-grid { grid-template-columns: 1fr; }
  .newsletter-form { flex-direction: column; }
  .newsletter-box { padding: 32px 22px; }
  section { padding: 64px 0; }
}