:root {
  --cr-red: #ce1126;
  --cr-blue: #002b7f;
  --bg: #f4f6f9;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --timeline-height: 140px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto;
  background: var(--bg);
  color: var(--text);
}

header {
  background: linear-gradient(90deg, var(--cr-blue), var(--cr-red));
  color: #fff;
  padding: 2rem 1rem;
  text-align: center;
}

header h1 { margin: 0; font-size: 1.8rem; }
header p { margin: 0.5rem 0 0; font-size: 1rem; }

main { max-width: 1300px; margin: auto; padding: 2rem 1rem; }

/* Timeline */
.timeline-wrapper {
  margin-bottom: 2rem;
  overflow-x: auto;
  padding-bottom: 1rem;
  position: relative;
}

#mostrar-todos {
  margin-top: 0.5rem;
  margin-bottom: 1.5rem;
  padding: 0.4rem 0.8rem;
  background: var(--cr-blue);
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

.timeline {
  display: inline-flex;     
  align-items: center;
  position: relative;
  height: var(--timeline-height);
  padding: 0 40px;          
}

/* Línea de fondo */
.timeline-line {
  position: absolute;
  top: 50%;
  left: 0;
  height: 4px;
  width: 100%;
  background: #ddd;
  transform: translateY(-50%);
  border-radius: 2px;
  z-index: 0;  
}

/* Barra de progreso */
.timeline-progress {
  position: absolute;
  top: 50%;
  left: 0;
  height: 4px;
  background: var(--cr-blue);
  transform: translateY(-50%);
  border-radius: 2px;
  width: 0%;
  transition: width 0.3s;
  z-index: 1; /* sobre la línea, pero debajo de los puntos */
}

/* Puntos */
.timeline-point {
  flex: none;
  width: 80px;
  text-align: center;
  margin: 0 15px;
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
  position: relative;
  z-index: 2; /* puntos siempre encima de la línea */
}

.timeline-point span.periodo {
  font-size: 0.7rem;
  margin-bottom: 5px;
  white-space: nowrap;
}

.timeline-point img {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: 2px solid var(--cr-blue);
  object-fit: cover;
  margin-bottom: 5px;
}

.timeline-point span.nombre {
  font-size: 0.7rem;
  max-width: 80px;
  line-height: 1.1em;
}

.timeline-point.active img {
  border-color: var(--cr-red);
  transform: scale(1.3);
  transition: transform 0.2s, border-color 0.2s;
}

/* Grid */
.presidentes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 1.5rem;
}

/* Cards */
.card {
  background: var(--card);
  border-radius: 18px;
  box-shadow: 0 12px 28px rgba(0,0,0,.08);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.card-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: linear-gradient(90deg, #eef2ff, #fff);
}

.card-header img {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--cr-blue);
}

.card-header h2 { margin: 0; font-size: 1.2rem; }
.card-header .party { color: var(--cr-blue); font-weight: 700; font-size: .9rem; }

.card-body {
  padding: 1rem 1.2rem 1.4rem;
  font-size: .95rem;
}

.section { margin-bottom: .7rem; }
.section strong { color: var(--cr-red); }

table {
  width: 100%;
  border-collapse: collapse;
  margin: .5rem 0 1rem;
  font-size: .9rem;
}

table th, table td {
  border: 1px solid #ddd;
  padding: .5rem;
  text-align: left;
}

table th { background-color: #f1f1f1; }

.controversia {
  background: #fff4f4;
  border-left: 4px solid var(--cr-red);
  padding: .7rem;
  margin-bottom: .5rem;
  font-size: .9rem;
}

.fuentes {
  font-size: .8rem;
  color: var(--muted);
  margin-top: .5rem;
}

@media (max-width: 600px) {
  .card-header { flex-direction: column; align-items: flex-start; }
  .card-header img { margin-bottom: .5rem; }
  .timeline {
    padding: 0 10px;
  } 
  
    
}

.volver {
  text-decoration: none;
  color: var(--card);
  font-weight: 600;
  display: inline-block; 
   margin-top: 2em; 
}

.site-footer {
  background: linear-gradient(90deg, var(--cr-blue), var(--cr-red));
  color: #fff;
  text-align: center;
  padding: 2rem 1rem;
  margin-top: 3rem;
}

.site-footer .footer-content {
  max-width: 900px;
  margin: 0 auto;
  line-height: 1.7;
  font-size: 0.95rem;
}

.site-footer p {
  margin: 0.4rem 0;
  font-weight: 400;
}

.site-footer .footer-quote {
  margin-top: 0.8rem;
  font-style: italic;
  opacity: 0.9;
}

/* Responsive */
@media (max-width: 600px) {
  .site-footer {
    padding: 1.5rem 1rem;
  }

  .site-footer .footer-content {
    font-size: 0.9rem;
  }
}