:root {
  /* Neutros */
  --color-bg: #F8F9FA;           /* fondo principal */
  --color-bg-alt: #EEF1F3;       /* fondo de secciones alternadas (derivado, no rompe el ritmo visual existente) */
  --color-surface: #FFFFFF;      /* tarjetas, secciones elevadas */
  --color-text: #1A1D23;         /* texto principal */
  --color-text-muted: #6B7280;   /* subtítulos, fechas, texto secundario */
  --color-border: #E5E7EB;       /* bordes y divisores */

  /* Marca */
  --color-primary: #1E3A5F;      /* azul marino: encabezados, nav, secciones */
  --color-primary-dark: #16324F; /* hover de elementos primarios / degradado del hero */

  /* Acento */
  --color-accent: #0FB5AE;       /* teal: enlaces, detalles, aro de foto */
  --color-accent-hover: #0C9691; /* hover de enlaces/detalles */
  --color-accent-soft: #E6F7F6;  /* fondos suaves de tags/badges */

  /* Relleno sólido de botones (texto blanco): #0FB5AE con blanco da 2.55:1,
     no pasa AA (4.5:1). Estos dos tonos son la misma familia teal, ~1 paso
     más oscuros, ajustados para pasar AA con margen (~5.2:1) sin cambiar
     --color-accent en el resto del sitio (enlaces, aro de foto, chips). */
  --color-accent-cta: #0E7A73;
  --color-accent-cta-hover: #0A625D;

  /* Texto sobre fondo primario (nav/hero oscuros) — deriva del blanco, no rompe la jerarquía ya usada */
  --color-on-primary: rgba(255, 255, 255, 0.82);
  --color-on-primary-soft: rgba(255, 255, 255, 0.62);

  --radius: 12px;
  --max-width: 960px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

a { color: inherit; }

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(30, 58, 95, 0.96);
  backdrop-filter: blur(6px);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  gap: 28px;
  align-items: center;
}

.nav-links a {
  color: var(--color-on-primary);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-links a:hover { color: #fff; }

.nav-cta {
  background: var(--color-accent-cta);
  color: #fff !important;
  padding: 8px 16px;
  border-radius: 999px;
  transition: background 0.2s ease;
}

.nav-cta:hover { background: var(--color-accent-cta-hover); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: #fff;
  display: block;
}

.hero {
  background: linear-gradient(160deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  padding: 96px 24px 80px;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 56px;
}

.hero-text { flex: 1; min-width: 0; }

.hero-photo { flex-shrink: 0; }

.hero-photo img {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid rgba(15, 181, 174, 0.5);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.35);
  display: block;
}

.hero-social {
  display: flex;
  gap: 20px;
  margin-top: 20px;
}

.hero-social a {
  color: var(--color-on-primary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  border-bottom: 1px solid rgba(255,255,255,0.25);
  padding-bottom: 2px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.hero-social a:hover { color: var(--color-accent); border-color: var(--color-accent); }

.eyebrow {
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 12px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  margin: 0 0 8px;
  letter-spacing: -0.02em;
}

.hero-role {
  font-size: 1.15rem;
  color: var(--color-on-primary);
  margin: 0 0 24px;
  font-weight: 500;
}

.hero-about {
  max-width: 620px;
  color: var(--color-on-primary-soft);
  font-size: 1.02rem;
  margin: 0 0 36px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--color-accent-cta);
  color: #fff;
}

.btn-primary:hover { background: var(--color-accent-cta-hover); }

.btn-ghost {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.35);
}

.btn-ghost:hover { border-color: #fff; }

.section {
  padding: 72px 24px;
}

.section-alt { background: var(--color-bg-alt); }

.section-title {
  max-width: var(--max-width);
  margin: 0 auto 40px;
  font-size: 1.6rem;
  letter-spacing: -0.01em;
  color: var(--color-primary);
}

.timeline {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.job {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px 28px;
}

.job-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px 16px;
}

.job-head h3 {
  margin: 0;
  font-size: 1.1rem;
  color: var(--color-text);
}

.job-date {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 600;
  white-space: nowrap;
}

.job-company {
  color: var(--color-primary);
  font-weight: 600;
  margin: 4px 0 14px;
  font-size: 0.92rem;
}

.job ul {
  margin: 0;
  padding-left: 20px;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.job li + li { margin-top: 8px; }

.job-subhead {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  margin: 16px 0 8px;
}

.job-subhead:first-of-type { margin-top: 14px; }

.cards {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 22px;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.card-img {
  width: calc(100% + 48px);
  margin: -24px -24px 16px;
  display: block;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: top;
  border-bottom: 1px solid var(--color-border);
}

.card-tag {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.card h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
  color: var(--color-text);
}

.card p {
  color: var(--color-text-muted);
  font-size: 0.93rem;
  margin: 0 0 14px;
  flex-grow: 1;
}

.card-link {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

.card-link:hover { text-decoration: underline; color: var(--color-accent-hover); }

.skills-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 40px;
}

.skills-subtitle {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin: 0 0 16px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  background: var(--color-accent-soft);
  border: 1px solid var(--color-border);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-primary);
}

.edu-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 22px;
}

.edu-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px 28px;
}

.edu-item h3 {
  margin: 0 0 6px;
  font-size: 1.05rem;
  color: var(--color-text);
}

.edu-item p { margin: 2px 0; color: var(--color-text-muted); }

.contact {
  text-align: center;
}

.contact-lead {
  max-width: 520px;
  margin: 0 auto 28px;
  color: var(--color-text-muted);
}

.section-lead {
  max-width: var(--max-width);
  margin: -24px auto 32px;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.contact-links {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.contact-links .btn-primary,
.contact-links .btn-ghost {
  color: var(--color-text);
}

.contact-links .btn-primary { color: #fff; }
.contact-links .btn-ghost { border-color: var(--color-border); }

.contact-location {
  margin-top: 24px;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.footer {
  background: var(--color-primary);
  color: var(--color-on-primary-soft);
  text-align: center;
  padding: 24px;
  font-size: 0.85rem;
}

@media (max-width: 720px) {
  .hero-inner {
    flex-direction: column-reverse;
    text-align: center;
    gap: 28px;
  }
  .hero-text { width: 100%; }
  .hero-photo img { width: 160px; height: 160px; }
  .hero-actions, .hero-social { justify-content: center; }
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-primary);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px 24px;
    display: none;
    gap: 18px;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
}