/* ===========================
   RESET BÁSICO
=========================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Roboto', sans-serif;
}

body {
    background-color: #ffffff;
}

/* ===========================
   HEADER
=========================== */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: #001c4c; /* Azul principal */
    color: #ffffff;
    box-shadow: 0 2px 6px rgba(0, 28, 76, 0.4);
    z-index: 9999;
    display: flex;
    align-items: center;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Logo */
.logo img {
    height: 50px;
    width: auto;
    display: block;
}

/* Ajuste de padding-top del body igual a la altura del logo */
body {
    padding-top: 50px;
}

/* Botón Hamburger */
.hamburger {
    display: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: #ffffff;
}

/* Menú */
nav ul.menu {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 15px;
}

nav ul.menu li {
    position: relative;
}

nav ul.menu li a {
    color: #ffffff;
    text-decoration: none;
    padding: 6px 10px;
    display: block;
    transition: background 0.3s, color 0.3s;
}

nav ul.menu li a:hover {
    background-color: #ec000b; /* Rojo */
    color: #ffffff;
    border-radius: 5px;
}

/* Submenu */
nav ul.menu li .submenu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #99a4b8; /* Gris azulado */
    list-style: none;
    padding: 0;
    display: none;
    min-width: 180px;
    border-radius: 5px;
    z-index: 1000;
}

nav ul.menu li:hover > .submenu {
    display: block;
}

nav ul.menu li .submenu li a {
    padding: 8px 12px;
    color: #001c4c;
}

nav ul.menu li .submenu li a:hover {
    background-color: #ec000b;
    color: #ffffff;
}

nav ul.menu li .submenu li .submenu {
    left: 100%;
    top: 0;
}

.dropdown > a::after {
    content: ' ▾';
    font-size: 0.8rem;
}

.dropdown .dropdown > a::after {
    content: ' ▸';
}

/* Botón iniciar sesión */
.header-btn {
    background-color: #ec000b;
    color: #ffffff;
    border: none;
    padding: 6px 12px;
    border-radius: 5px;
    cursor: pointer;
    white-space: nowrap;
    font-size: 0.9rem;
    transition: background 0.3s;
}

.header-btn:hover {
    background-color: #c90009;
}

/* ===========================
   MEDIA QUERIES
=========================== */

@media screen and (max-width: 767px) {
    .hamburger {
        display: block;
    }

    nav {
        position: fixed;
        top: 50px;
        right: -100%;
        width: 220px;
        height: calc(100vh - 50px);
        background-color: #001c4c;
        flex-direction: column;
        padding-top: 20px;
        transition: right 0.3s;
        z-index: 999;
    }

    nav.active {
        right: 0;
    }

    nav ul.menu {
        flex-direction: column;
        gap: 0;
    }

    nav ul.menu li {
        width: 100%;
    }

    nav ul.menu li .submenu {
        position: static;
        display: none;
        padding-left: 15px;
        background-color: #99a4b8;
    }

    nav ul.menu li.show-submenu > .submenu {
        display: block;
    }
}

/* ===========================
   RESPONSIVE SIZES (sin cambios)
=========================== */
/* Se mantienen exactamente igual que tu versión original */