:root {
  --bg: #ffffff;
  --fg: #0f172a;
  --muted: #64748b;
  --primary: #19376D;   /* cobalto oscuro */
  --primary-2: #576CBC; /* cobalto claro */
  --accent: #b5853a;    /* dorado */
  --card: #f8fafc;
  --border: #e2e8f0;
}

body.dark {
  --bg: #0b1220;
  --fg: #e5e7eb;
  --muted: #9aa5b1;
  --primary: #576CBC;
  --primary-2: #19376D;
  --accent: #e3b96f;
  --card: #111827;
  --border: #1f2937;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Inter', sans-serif; background: var(--bg); color: var(--fg); line-height: 1.6; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

/* HEADER */
.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(6px);
  background: rgba(255, 255, 255, 0.85);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

body.dark .topbar {
  background: rgba(0, 0, 0, 0.7);
}

.logo {
  width: 38px; height: 38px; display: grid; place-items: center;
  border-radius: 12px; font-weight: bold;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
}
.nav { display: flex; gap: 14px; flex-wrap: wrap; }
.nav a { padding: 8px 12px; border-radius: 10px; color: var(--muted); transition: 0.3s; }
.nav a:hover, .nav a.active { background: var(--card); color: var(--fg); border-bottom: 2px solid var(--accent); }
.toggles { display: flex; gap: 8px; }
.btn-ghost { background: transparent; border: 1px solid var(--border); padding: 6px 10px; border-radius: 10px; cursor: pointer; color: var(--fg); }

/* HERO */
.hero { text-align: center; padding: 40px 20px; }
.hero-banner {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  padding: 50px 20px; border-radius: 20px; margin-bottom: 24px;
  text-align: center; animation: fadeSlide 1s ease forwards;
}
@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}
.banner-title { color: #fff; font-size: 1.8rem; font-weight: 800; text-align: center; }
.title { font-size: 38px; margin: 10px 0; }
.keywords { color: var(--muted); margin-bottom: 18px; }
.hero-cta { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }

/* BUTTONS */
.btn {
  background: var(--card); border: 1px solid var(--border); padding: 10px 14px;
  border-radius: 12px; display: inline-flex; align-items: center; gap: 6px;
  cursor: pointer; font-weight: 600; transition: 0.3s;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 8px 18px rgba(0,0,0,.12); }
.btn.primary { background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: #fff; border: none; }
.btn.outline { background: transparent; border: 1.5px solid var(--primary); color: var(--primary); }
.btn.small { padding: 6px 10px; font-size: 14px; }
.btn.big { padding: 12px 20px; font-size: 1rem; font-weight: 700; }

/* SECTIONS */
.section { padding: 60px 20px; }
.section.alt { background: var(--card); }
.container { max-width: 1100px; margin: 0 auto; }
.section h2 { font-size: 28px; margin-bottom: 20px; text-align: center; }

/* SOBRE MÍ */
.about-hero { display: flex; flex-wrap: wrap; gap: 30px; justify-content: space-between; align-items: flex-start; }
.about-left { flex: 1; min-width: 300px; }
.about-headline { font-size: 1.6rem; margin-bottom: 14px; line-height: 1.3; }
.about-headline .accent { color: var(--accent); font-weight: 800; }
.about-left p { margin-bottom: 14px; }
.about-badge {
  margin: 18px 0; padding: 14px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff; border-radius: 14px; font-weight: 500; text-align: center;
}
.about-cta { display: flex; gap: 12px; flex-wrap: wrap; }

/* ABOUT CARD */
.about-card {
  flex: 0.8; min-width: 260px; background: var(--bg);
  border: 1px solid var(--border); border-radius: 20px; padding: 24px; text-align: center;
  box-shadow: 0 8px 22px rgba(0,0,0,.08); transition: transform .3s, box-shadow .3s;
}
.about-card:hover { transform: translateY(-5px); box-shadow: 0 12px 28px rgba(0,0,0,.15); }
.avatar-ring {
  display: inline-block;
  padding: 4px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 50%;
  margin-bottom: 12px;
}
.avatar { width: 140px; height: 140px; border-radius: 50%; object-fit: cover; border: 4px solid var(--bg); }

/* CONTACT LIST IN ABOUT CARD */
.about-card .contact-list { list-style: none; padding: 0; margin: 20px auto 0; display: flex; flex-direction: column; gap: 14px; align-items: center; }
.about-card .contact-list li { display: flex; align-items: center; gap: 12px; width: 100%; max-width: 260px; font-size: 1rem; color: var(--fg); }
.about-card .contact-list .icon {
  width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff; font-size: 18px; flex-shrink: 0; transition: all .2s;
}
.about-card .contact-list .icon:hover { box-shadow: 0 0 10px var(--accent); transform: scale(1.1); }
.about-card .contact-list a { color: var(--primary); font-weight: 600; transition: color 0.2s; }
.about-card .contact-list a:hover { color: var(--accent); }

/* PROPUESTA */
.value-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(260px,1fr)); gap: 18px; margin-top: 18px; }
.value-card {
  background: var(--bg); border: 1px solid var(--border); border-radius: 20px; padding: 18px; text-align: center;
  transition: transform .3s, box-shadow .3s;
}
.value-card:hover { transform: translateY(-6px) scale(1.02); box-shadow: 0 12px 28px rgba(0,0,0,.15); }
.value-card i { font-size: 28px; margin-bottom: 8px; }

/* TIMELINE (EXPERIENCIA Y EDUCACIÓN) */
.timeline-cards {
  position: relative; margin-left: 20px; padding-left: 20px;
  border-left: 3px solid; border-image: linear-gradient(var(--primary), var(--accent)) 1;
  display: flex; flex-direction: column; gap: 20px;
}
.tl-card {
  position: relative; background: var(--bg); border: 1px solid var(--border);
  border-radius: 20px; padding: 16px 20px; transition: .3s;
  box-shadow: 0 8px 22px rgba(0,0,0,.08);
}
.tl-card:hover { border-color: var(--primary); box-shadow: 0 12px 28px rgba(0,0,0,.15); transform: translateY(-3px); }
.tl-dot {
  position: absolute; left: -30px; top: 20px; width: 14px; height: 14px;
  background: var(--primary-2); border-radius: 50%; border: 2px solid #fff;
  box-shadow: 0 0 0 2px var(--primary-2);
}
.tl-content h3 { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.tl-content .muted { font-size: .9rem; color: var(--muted); }

/* PORTAFOLIO */
.grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(280px,1fr)); gap: 20px; }
.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 18px;
  transition: all .3s;
  box-shadow: 0 8px 22px rgba(0,0,0,.08);
}
.card:hover {
  transform: translateY(-6px) scale(1.02);
  background: linear-gradient(135deg, var(--primary-2), var(--accent));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 12px 28px rgba(0,0,0,.15);
}
.card:hover h3,
.card:hover p {
  color: #fff;
}


/* HABILIDADES */
.badges { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.badge {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 12px;
  font-size: .9rem;
  transition: all .2s;
}
.badge:hover {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  transform: scale(1.05);
  box-shadow: 0 0 10px rgba(0,0,0,.15);
}

/* CONTACTO */
.contact { text-align: center; }
.contact-icons { display: flex; gap: 16px; justify-content: center; margin: 20px 0; }
.icon {
  width: 48px; height: 48px; border-radius: 50%; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff; font-size: 20px; transition: 0.2s;
}
.icon:hover {
  transform: scale(1.15);
  box-shadow: 0 0 15px var(--accent), 0 0 25px rgba(0,0,0,.2);
}
.contact-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 16px; }

/* FOOTER */
.site-footer { text-align: center; padding: 20px; color: var(--muted); }

/* === BOTÓN HAMBURGUESA === */
/* Ocultar por defecto (computadora) */
.menu-toggle {
  display: none;
}

/* Mostrar solo en móviles */
@media (max-width: 900px) {
  .menu-toggle {
    display: block;
    background: transparent;
    border: none;
    font-size: 1.6rem;
    cursor: pointer;
    margin-left: 10px;
    color: var(--fg);
  }

  /* Cambiar nav: oculto por defecto en móvil */
  .nav {
    display: none !important;
    flex-direction: column;
    background: var(--bg);
    position: absolute;
    top: 60px;  /* justo debajo del header */
    right: 10px;
    width: 220px;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 6px 18px rgba(0,0,0,.1);
    z-index: 999;
  }

  .nav.active {
    display: flex !important;
  }

  .topbar {
    flex-wrap: nowrap;
  }
}
/* Animaciones de entrada */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}
/* Link activo en el navbar */
.nav a.active {
  color: var(--primary);
  font-weight: 600;
  border-bottom: 2px solid var(--accent);
}