/* HEADER CON FILTRO ACLARADO PARA RESALTAR LOGO */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100px;
    z-index: 10000;
    display: flex;
    align-items: center;
    background: transparent;
    overflow: visible;
}

/* CAPA DE FONDO CON FILTRO CLARO */
.main-header::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* FILTRO: Aplicamos un velo blanco al 30% para aclarar el fondo */
    background-image: linear-gradient(rgba(255, 255, 255, 0.3), rgba(255, 255, 255, 0.3)), 
                      url('../img/hed.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    z-index: -1;
}

.container {
    width: 100%;
    max-width: 1300px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 30px;
}

/* LOGO - AHORA MÁS NOTORIO */
.logo img {
    height: 90px; /* Aumentado ligeramente para mayor impacto */
    width: auto;
    /* Sombra suave para separar el logo del fondo claro */
    filter: drop-shadow(0px 4px 6px rgba(0,0,0,0.1));
    transition: transform 0.3s ease;
}

.logo img:hover {
    transform: scale(1.03);
}

/* NAVEGACIÓN PROFESIONAL */
.nav-menu ul {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-menu li {
    position: relative;
    padding: 30px 0;
}

.nav-menu a {
    text-decoration: none;
    color: #1b4332; /* Verde bosque oscuro */
    font-family: 'Montserrat', sans-serif;
    font-weight: 800;
    font-size: 13px;
    letter-spacing: 0.3px;
    padding: 10px 12px;
    text-transform: uppercase;
    transition: all 0.3s ease;
}

.nav-menu a:hover {
    color: #5cb85c;
}

/* SUBMENÚS (FONDO BLANCO PURO) */
.submenu {
    position: absolute;
    top: 85%;
    left: 0;
    background: #ffffff;
    min-width: 280px;
    border-radius: 10px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.12);
    padding: 15px 0;
    border-top: 4px solid #5cb85c;
    
    /* ANIMACIÓN DE APARICIÓN */
    opacity: 0;
    visibility: hidden;
    transform: translateY(15px);
    transition: all 0.4s ease;
}

.has-submenu:hover .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.submenu li a {
    color: #444 !important;
    text-transform: none;
    font-weight: 600;
    padding: 12px 25px;
    display: block;
}

.submenu li a:hover {
    background: #f8fbf8;
    color: #5cb85c !important;
    padding-left: 30px;
}

/* BOTÓN DONAR PROFESIONAL */
.btn-donate {
    background: #5cb85c;
    color: white !important;
    padding: 12px 25px !important;
    border-radius: 50px;
    font-weight: 800;
    font-size: 12px;
    text-transform: uppercase;
    box-shadow: 0 4px 15px rgba(92, 184, 92, 0.2);
    transition: all 0.3s ease;
}

.btn-donate:hover {
    background: #2d5a27;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}