/* === Header principal BIROSISTEMA === */

#header {
  background: rgba(255, 255, 255, 0.85);
  box-shadow: 0 2px 8px rgba(0,0,0,0.03);
  padding: 18px 0;
  position: fixed;
  left: 0;
  top: 0;
  right: 0;
  width: 100%;
  z-index: 100;
  transition: background 0.3s;
}

#header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

#header #logo h1 a, #header #logo h1 a:hover {
  color: #fff;
  padding-left: 10px;
  border-left: 4px solid #275aa7;
}

/* #header.header-scrolled {
  box-shadow: -21.213px 21.213px 30px 0px rgba(158, 158, 158, 0.3);
  background: #fff;
  transition: all 0.5s;
} */

#logo img {
  height: auto;            /* Ajusta según el espacio del header */
  max-width: 150px;        /* Evita que se distorsione o desborde */
  width: auto;
  margin-right: 40px;
  vertical-align: middle;
  transition: filter 0.2s;
  filter: drop-shadow(0 1px 2px rgba(30,30,60,0.05));
}

/* Menú */
#nav-menu {
  display: flex;
  align-items: center;
}

.nav-menu {
  list-style: none;
  display: flex;
  gap: 38px;
  margin: 0;
  padding: 0;
}

.nav-menu li a {
  color: #212121;
  text-decoration: none;
  font-size: 1.05rem;
  letter-spacing: 0.03em;
  font-weight: 500;
  position: relative;
  padding: 7px 2px;
  transition: color 0.2s;
}

.nav-menu .menu-active a,
.nav-menu li a:hover {
  color: #0e408a;
  border-bottom: 2.5px solid #0e408a;
}

/* Menú hamburguesa */
.nav-toggle {
  display: none;
  background: transparent;
  border: none;
  font-size: 2rem;
  margin-right: 10px;
  cursor: pointer;
}

.sr-only {
  position: absolute; 
  width: 1px; 
  height: 1px; 
  padding: 0; 
  margin: -1px; 
  overflow: hidden; 
  clip: rect(0,0,0,0); 
  border: 0;
}

/* Responsive */
@media (max-width: 900px) {
  #header .container {
    flex-direction: column;
    align-items: flex-start;
    padding: 0 12px;
  }
  
  #logo img {
    height: 42px;
    max-width: 140px;
    margin-right: 16px;
  }
  .nav-toggle {
    display: block;
  }
  .nav-menu {
    display: none;
    flex-direction: column;
    width: 100vw;
    background-color: #fff;
    position: absolute;
    left: 0;
    top: 72px;
    padding: 14px 0;
    box-shadow: 0 8px 16px rgba(0,0,0,0.08);
  }
  .nav-menu.open {
    display: flex;
  }
  .nav-menu li {
    margin: 14px 0;
    text-align: left;
    padding-left: 36px;
  }
}

body {
  padding-top: 72px;
}