:root {
    --color-primary: #0F172A; /* Navy Oscuro */
    --color-accent: #D4AF37; /* Dorado */
    --color-bg: #FFFFFF;
    --font-head: 'Cormorant Garamond', serif;
    --font-body: 'Montserrat', sans-serif;
}

body { font-family: var(--font-body); color: var(--color-primary); background: var(--color-bg); font-weight: 300; }
a { color: inherit; text-decoration: none; }
.container { max-width: 1000px; margin: 0 auto; padding: 0 2rem; }

/* Header */
.site-header { padding: 2rem 0; border-bottom: 1px solid #eee; position: sticky; background: #fff; z-index: 10; }
.header-flex { display: flex; justify-content: space-between; align-items: center; }
.logo-group h1 { font-family: var(--font-head); font-size: 1.5rem; margin: 0; letter-spacing: 1px; }
.logo-group span { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 3px; color: #666; }
nav a { margin-left: 2.5rem; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 1px; font-weight: 400; transition: color 0.3s; }
nav a:hover { color: var(--color-accent); }

/* Hero Académico */
.academic-hero { padding: 6rem 0; border-bottom: 1px solid #eee; }
.hero-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 4rem; align-items: end; }
.hero-text h2 { font-family: var(--font-head); font-size: 3.5rem; line-height: 1.1; margin-bottom: 1.5rem; }
.hero-text p { font-size: 1.1rem; line-height: 1.8; color: #555; }
.hero-image-box { position: relative; }
.hero-image-box img { width: 100%; filter: grayscale(20%); border: 1px solid #eee; padding: 10px; }

/* Timeline / Estudios */
.credentials-section { padding: 6rem 0; }
.section-pretitle { font-size: 0.75rem; letter-spacing: 3px; text-transform: uppercase; color: var(--color-accent); display: block; margin-bottom: 1rem; }
.credentials-section h3 { font-family: var(--font-head); font-size: 2.5rem; margin-bottom: 3rem; }

.timeline { border-left: 1px solid #ddd; padding-left: 2rem; }
.timeline-item { position: relative; margin-bottom: 2.5rem; }
.timeline-item::before { content: ''; position: absolute; left: -2.45rem; top: 5px; width: 10px; height: 10px; background: var(--color-primary); border-radius: 50%; }
.year { font-weight: 600; color: var(--color-accent); font-size: 0.9rem; margin-right: 1rem; }
.content h4 { margin: 0.5rem 0 0.2rem; font-size: 1.1rem; }
.content p { margin: 0; color: #666; font-size: 0.9rem; }

/* CTA */
.cta-box { background: var(--color-primary); color: #fff; padding: 4rem 0; text-align: center; }
.cta-box h3 { font-family: var(--font-head); font-size: 2rem; margin-bottom: 1rem; color: #fff; }
.btn-academic { display: inline-block; border: 1px solid var(--color-accent); padding: 1rem 2rem; color: var(--color-accent); letter-spacing: 1px; margin-top: 1rem; transition: background 0.3s; }
.btn-academic:hover { background: var(--color-accent); color: var(--color-primary); }

/* Responsive */
@media (max-width: 768px) {
    .hero-grid { grid-template-columns: 1fr; text-align: center; }
    .hero-image-box { display: none; } /* Ocultar imagen en móvil para priorizar texto */
}