/* shared.css — estilos comunes para páginas de servicios */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --black: #0d0d0d;
  --white: #fafaf8;
  --gray-100: #f4f3f0;
  --gray-200: #e8e6e1;
  --gray-400: #9e9b94;
  --gray-600: #5a5852;
  --accent: #c8441a;
  --accent-light: #f5e8e2;
  --serif: 'DM Serif Display', Georgia, serif;
  --sans: 'DM Sans', system-ui, sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; }
body { font-family: var(--sans); background: var(--white); color: var(--black); font-size: 16px; line-height: 1.7; overflow-x: hidden; }

/* NAV */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 3rem; height: 64px;
  background: rgba(250,250,248,0.92); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-200);
}
.nav-logo { font-family: var(--serif); font-size: 1.25rem; color: var(--black); text-decoration: none; }
.nav-logo span { color: var(--accent); }
.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-links a { font-size: 0.875rem; color: var(--gray-600); text-decoration: none; transition: color var(--transition); }
.nav-links a:hover, .nav-links a.active { color: var(--black); }
.nav-cta { font-size: 0.875rem; font-weight: 500; color: var(--white); background: var(--black); padding: 0.5rem 1.25rem; border-radius: 2rem; text-decoration: none; transition: background var(--transition); }
.nav-cta:hover { background: var(--accent); }

/* Hamburger mobile */
.nav-hamburger {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 32px; height: 32px; cursor: pointer; background: none; border: none; padding: 0;
}
.nav-hamburger span { display: block; width: 22px; height: 2px; background: var(--black); transition: all 0.3s ease; border-radius: 2px; }
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: none; position: fixed; inset: 0; z-index: 99;
  background: var(--white); flex-direction: column;
  align-items: center; justify-content: center; gap: 2rem;
}
.mobile-menu.open { display: flex; }
.mobile-menu a { font-family: var(--serif); font-size: 2rem; color: var(--black); text-decoration: none; transition: color var(--transition); }
.mobile-menu a:hover { color: var(--accent); }
.mobile-menu .mobile-cta { font-family: var(--sans); font-size: 1rem; font-weight: 500; color: var(--white); background: var(--black); padding: 0.8rem 2.5rem; border-radius: 2rem; margin-top: 1rem; }
.mobile-menu .mobile-cta:hover { background: var(--accent); color: var(--white); }

/* FOOTER */
footer {
  background: var(--black); color: rgba(255,255,255,0.5);
  padding: 2.5rem 3rem; display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 1rem;
}
.footer-logo { font-family: var(--serif); font-size: 1rem; color: var(--white); }
.footer-logo span { color: var(--accent); }
.footer-links { display: flex; gap: 1.5rem; list-style: none; }
.footer-links a { font-size: 0.8rem; color: rgba(255,255,255,0.5); text-decoration: none; transition: color var(--transition); }
.footer-links a:hover { color: var(--white); }
.footer-copy { font-size: 0.75rem; }

/* FADE IN */
.fade-in { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* RESPONSIVE */
@media (max-width: 900px) {
  nav { padding: 0 1.5rem; }
  .nav-links, .nav-cta { display: none; }
  .nav-hamburger { display: flex; }
  footer { padding: 2rem 1.5rem; }
  .footer-links { display: none; }
}