/* =============================================
   biblioteca.css — Estilos de biblioteca.php
   ============================================= */

.pagina-biblioteca {
  padding: 40px 0 60px;
}

/* ===== HERO ===== */
.biblioteca-hero {
  background: linear-gradient(135deg, var(--azul) 0%, var(--azul-hover) 100%);
  border-radius: var(--radio);
  padding: 40px 48px;
  margin-bottom: 32px;
  position: relative;
  overflow: hidden;
}

.biblioteca-hero::before {
  content: '';
  position: absolute;
  top: -40px; right: -40px;
  width: 200px; height: 200px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
}

.biblioteca-hero::after {
  content: '';
  position: absolute;
  bottom: -60px; right: 60px;
  width: 300px; height: 300px;
  border-radius: 50%;
  background: rgba(255,255,255,0.04);
}

.biblioteca-hero h1 {
  font-family: 'Raleway', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  margin: 0 0 10px;
}

.biblioteca-hero p {
  color: rgba(255,255,255,0.7);
  font-size: 0.95rem;
  margin: 0;
}

/* ===== BUSCADOR ===== */
.buscador-wrapper {
  position: relative;
  margin-bottom: 32px;
}

.buscador-wrapper i {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--azul);
  font-size: 16px;
  pointer-events: none;
}

#buscador {
  width: 100%;
  padding: 14px 16px 14px 46px;
  border: 2px solid var(--gris-fondo);
  border-radius: var(--radio);
  font-size: 0.95rem;
  font-family: 'Montserrat', sans-serif;
  color: var(--texto);
  background: #fff;
  box-shadow: var(--sombra);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

#buscador:focus {
  border-color: var(--azul);
  box-shadow: 0 0 0 3px rgba(1,36,99,0.1);
}

#buscador::placeholder { color: #aaa; }

/* ===== STATS ===== */
.biblioteca-stats {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 0.88rem;
  color: var(--texto-suave);
}

.biblioteca-stats strong { color: var(--azul); }

/* ===== GRID ===== */
.biblioteca-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}

@media (max-width: 1199px) { .biblioteca-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 767px)  { .biblioteca-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px)  { .biblioteca-grid { grid-template-columns: 1fr; } }

/* ===== DOC CARD ===== */
.doc-card {
  background: #fff;
  border-radius: var(--radio);
  box-shadow: var(--sombra);
  padding: 22px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  text-decoration: none !important;
  border-top: 4px solid var(--azul);
  position: relative;
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.doc-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--azul), var(--azul-hover));
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.doc-card:hover { transform: translateY(-6px); box-shadow: var(--sombra-hover); }
.doc-card:hover::after { transform: scaleX(1); }

.doc-icono {
  width: 56px;
  height: 56px;
  background: var(--gris-fondo);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  transition: background 0.25s, transform 0.25s;
}

.doc-card:hover .doc-icono {
  background: var(--azul);
  transform: scale(1.08) rotate(-4deg);
}

.doc-icono i {
  font-size: 24px;
  color: var(--azul);
  transition: color 0.25s;
}

.doc-card:hover .doc-icono i { color: #fff; }

.doc-categoria {
  display: inline-block;
  background: var(--gris-fondo);
  color: var(--azul);
  font-size: 9px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 20px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.doc-titulo {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--texto);
  line-height: 1.5;
  flex: 1;
  margin-bottom: 16px;
  transition: color 0.2s;
}

.doc-card:hover .doc-titulo { color: var(--azul); }

.doc-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--azul);
  color: #fff;
  padding: 7px 16px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  font-family: 'Montserrat', sans-serif;
  width: 100%;
  justify-content: center;
  transition: background 0.2s;
}

.doc-card:hover .doc-btn { background: var(--azul-hover); }

/* ===== SIN RESULTADOS ===== */
.sin-resultados {
  display: none;
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: var(--texto-suave);
}

.sin-resultados i {
  font-size: 48px;
  color: var(--azul);
  opacity: 0.3;
  margin-bottom: 16px;
  display: block;
}

.sin-resultados p { font-size: 1rem; margin: 0; }

/* ===== RESPONSIVE HERO ===== */
@media (max-width: 767px) {
  .biblioteca-hero { padding: 28px 24px; }
  .biblioteca-hero h1 { font-size: 1.5rem; }
}