@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@400;500;600&family=Source+Sans+3:wght@400;500&display=swap');

:root {
  --azul: #0f2545;
  --azul-claro: #1a3560;
  --borgona: #7A1C2E;
  --borgona-claro: #912233;
  --arena: #D9C9A3;
  --arena-dark: #b8a57a;
  --crema: #F7F4EE;
  --crema-dark: #ede9df;
  --tinta: #1a1a1a;
  --borde-claro: rgba(255,255,255,0.15);
}

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

body {font-family: 'Source Sans 3', sans-serif;background: #e8e4dc;color: var(--tinta);overflow-x: hidden;}

.contenedor {width: 100%;}

.navbar {background: var(--azul);padding: 14px max(40px, calc((100% - 1400px) / 2));display: flex;justify-content: space-between;align-items: center;position: sticky;top: 0;z-index: 100;}
.navbar-brand {font-family: 'Cormorant Garamond', serif;color: white;font-size: 18px;font-weight: 600;letter-spacing: 0.5px;text-decoration: none;}
.navbar-links {display: flex;gap: 28px;list-style: none;}
.navbar-links a {color: var(--arena);font-size: 13px;text-decoration: none;letter-spacing: 0.5px;transition: color 0.2s;}
.navbar-links a:hover,
.navbar-links a.current {color: white;border-bottom: 1px solid var(--arena);padding-bottom: 2px;}

.b-azul   { background: var(--azul);   padding: 40px; }
.b-borgona { background: var(--borgona); padding: 40px; }
.b-crema  { background: var(--crema);  padding: 40px; }

.b-azul > *,
.b-borgona > *,
.b-crema > *,
.hero > *:not(.avatar) {max-width: 1400px;}

.b-azul,
.b-borgona,
.b-crema {display: flex;flex-direction: column;align-items: stretch;padding: 40px max(40px, calc((100% - 1400px) / 2));}

.b-azul   .label,
.b-borgona .label { font-size: 10px; letter-spacing: 2px; text-transform: uppercase; color: var(--arena); margin-bottom: 8px; }
.b-crema  .label  { font-size: 10px; letter-spacing: 2px; text-transform: uppercase; color: var(--arena-dark); margin-bottom: 8px; }

.b-azul   .titulo,
.b-borgona .titulo { font-family: 'Cormorant Garamond', serif; font-size: 28px; font-weight: 600; color: white; margin-bottom: 24px; }
.b-crema  .titulo  { font-family: 'Cormorant Garamond', serif; font-size: 28px; font-weight: 600; color: var(--azul); margin-bottom: 24px; }

.footer {background: var(--azul);padding: 20px max(40px, calc((100% - 1400px) / 2));display: flex;justify-content: space-between;align-items: center;border-top: 2px solid var(--borgona);}
.footer-links { display: flex; gap: 20px; list-style: none; }
.footer-links a { color: var(--arena); font-size: 12px; text-decoration: none; }
.footer-links a:hover { color: white; }
.footer-mail { font-size: 12px; color: rgba(255,255,255,0.5); }

body {animation: fadeInPage 0.4s ease;}
@keyframes fadeInPage {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-in {opacity: 0;transform: translateY(28px);transition: opacity 0.6s ease, transform 0.6s ease;}
.fade-in.visible {opacity: 1;transform: translateY(0);}

.hamburger {display: none;flex-direction: column;gap: 5px;background: none;border: none;cursor: pointer;padding: 4px;}
.hamburger span {display: block;width: 24px;height: 2px;background: var(--arena);border-radius: 2px;transition: all 0.25s ease;}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 768px) {
  .hamburger { display: flex; }
  .navbar-links { display: none; flex-direction: column; gap: 0; position: absolute; top: 100%; left: 0; right: 0; background: var(--azul); padding: 8px 0 16px; border-top: 1px solid rgba(255,255,255,0.1); }
  .navbar-links.open { display: flex; }
  .navbar-links li a { display: block; padding: 12px 24px; font-size: 15px; border-bottom: none !important; }
  .navbar { position: relative; }
  .hero { flex-direction: column; align-items: center; text-align: center; padding: 36px 24px; }
  .hero-texto p { max-width: 100%; }
  .b-azul, .b-borgona, .b-crema { padding: 28px 24px; }
  .cards3 { grid-template-columns: 1fr; }
  .footer { flex-direction: column; gap: 12px; padding: 20px 24px; text-align: center; }
  .footer-links { flex-wrap: wrap; justify-content: center; }
}

/* ── TABS ── */
.tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid rgba(255,255,255,0.2);
  margin-bottom: 28px;
}
.tab {
  padding: 10px 22px;
  font-size: 14px;
  cursor: pointer;
  color: rgba(255,255,255,0.5);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  font-family: 'Source Sans 3', sans-serif;
  transition: color 0.2s;
}
.tab.active { color: white; border-bottom-color: var(--arena); }
.tab:hover { color: rgba(255,255,255,0.8); }
.tab-content { display: none; min-height: 400px; }
.tab-content.active { display: block; }

/* ── ARTÍCULOS ── */
.art-item {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid rgba(255,255,255,0.12);
  align-items: flex-start;
}
.art-item:last-child { border: none; }
.art-year {
  font-family: 'Cormorant Garamond', serif;
  font-size: 20px;
  font-weight: 600;
  color: var(--arena);
  min-width: 44px;
  flex-shrink: 0;
  padding-top: 2px;
}
.art-info h4 {
  font-family: 'Cormorant Garamond', serif;
  font-size: 17px;
  font-weight: 600;
  color: white;
  margin-bottom: 6px;
  line-height: 1.4;
}
.art-info h4 a { color: white; text-decoration: none; transition: color 0.2s; }
.art-info h4 a:hover { color: var(--arena); }
.art-info .revista { font-size: 13px; color: rgba(255,255,255,0.6); line-height: 1.55; margin-bottom: 8px; }
.art-info .art-link { font-size: 12px; color: var(--arena); text-decoration: none; transition: opacity 0.2s; }
.art-info .art-link:hover { opacity: 0.75; }

/* ── MATERIALES ── */
.mat-item {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--crema-dark);
  align-items: flex-start;
}
.mat-item:last-child { border: none; }
.mat-img {
  width: 68px; height: 50px;
  background: var(--crema-dark);
  border-radius: 4px;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; color: #aaa;
}
.mat-info h4 { font-family: 'Cormorant Garamond', serif; font-size: 15px; font-weight: 600; color: var(--azul); margin-bottom: 3px; }
.mat-info p  { font-size: 12px; color: #888; }
.mat-info a  { color: var(--borgona); font-size: 12px; text-decoration: none; }
.mat-info a:hover { opacity: 0.75; }

/* ── TABS SOBRE CREMA ── */
.tabs-crema {
  border-bottom: 1px solid var(--crema-dark);
}
.tab-crema {
  padding: 10px 22px;
  font-size: 14px;
  cursor: pointer;
  color: #aaa;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  font-family: 'Source Sans 3', sans-serif;
  transition: color 0.2s;
}
.tab-crema.active { color: var(--azul); border-bottom-color: var(--borgona); }
.tab-crema:hover  { color: var(--azul); }

/* ── ARTÍCULOS── */
.art-item-crema {
  border-bottom: 1px solid var(--crema-dark);
}
.art-year-crema { color: var(--arena-dark); }
.art-titulo-crema { color: var(--azul) !important; }
.revista-crema  { color: #777 !important; }
.art-link-crema { color: var(--borgona); font-size: 12px; text-decoration: none; transition: opacity 0.2s; margin-right: 10px;}
.art-link-crema:hover { opacity: 0.7; }

/* ── ACCIONES ── */
.art-acciones { display: flex; align-items: center; gap: 16px; margin-top: 8px; flex-wrap: wrap; }

/* ── FICHA DE LIBRO ── */
.libro-ficha {
  display: flex;
  gap: 36px;
  align-items: flex-start;
  padding: 36px 0;
  border-bottom: 1px solid var(--crema-dark);
}
.libro-ficha:last-child { border: none; padding-bottom: 0; }

.libro-tapa {
  flex: 0 0 160px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.libro-tapa img {
  width: 160px;
  height: auto;
  display: block;
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}
.tapa-placeholder {
  width: 160px;
  height: 220px;
  background: var(--crema-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: #aaa;
}
.btn-descargar-libro {
  display: inline-block;
  font-size: 11px;
  font-family: 'Source Sans 3', sans-serif;
  letter-spacing: 0.5px;
  color: var(--borgona);
  border: 1px solid var(--borgona);
  border-radius: 3px;
  padding: 5px 12px;
  text-decoration: none;
  text-align: center;
  width: 100%;
  transition: background 0.2s, color 0.2s;
}
.btn-descargar-libro:hover { background: var(--borgona); color: white; }

.libro-info { flex: 1; }
.libro-anio { font-family: 'Cormorant Garamond', serif; font-size: 13px; color: var(--arena-dark); margin-bottom: 6px; letter-spacing: 0.5px; }
.libro-titulo { font-family: 'Cormorant Garamond', serif; font-size: 22px; font-weight: 600; color: var(--azul); margin-bottom: 6px; line-height: 1.3; }
.libro-autor { font-size: 13px; color: #888; margin-bottom: 4px; }
.libro-editorial { font-size: 13px; color: #aaa; margin-bottom: 16px; font-style: italic; }
.libro-resena { font-size: 14px; color: #555; line-height: 1.75; border-left: 3px solid var(--crema-dark); padding-left: 16px; }

@media (max-width: 768px) {
  .libro-ficha { flex-direction: column; align-items: center; gap: 24px; }
  .libro-tapa { flex: none; }
}