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

body {
    background-color: #f5f5f5;
}

/* ===========================
   HEADER
=========================== */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: #1b1b1b;
    color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    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: #fff;
}

/* 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: #fff;
    text-decoration: none;
    padding: 6px 10px;
    display: block;
    transition: background 0.3s, color 0.3s;
}

nav ul.menu li a:hover {
    background-color: #444;
    border-radius: 5px;
}

/* Submenu */
nav ul.menu li .submenu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #2b2b2b;
    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;
}

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: #ff6600;
    color: #fff;
    border: none;
    padding: 6px 12px;
    border-radius: 5px;
    cursor: pointer;
    white-space: nowrap;
    font-size: 0.9rem;
}

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

/* Pantallas grandes */
@media screen and (min-width: 768px) {
    /* mantengo flex horizontal para tablets y arriba */
}

/* Móviles y tablets pequeñas */
@media screen and (max-width: 767px) {
    .hamburger {
        display: block;
    }

    nav {
        position: fixed;
        top: 50px; /* altura del header */
        right: -100%; /* oculto */
        width: 220px;
        height: calc(100vh - 50px);
        background-color: #1b1b1b;
        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;
    }

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

/* Ajustes responsivos de logo, body padding y gaps */
@media screen and (max-width: 1920px) and (min-width: 1600px) {
    .logo img { height: 55px; }
    body { padding-top: 55px; }
    nav ul.menu { gap: 22px; font-size: 1rem; }
    .header-btn { padding: 7px 14px; font-size: 0.95rem; }
}

@media screen and (max-width: 1599px) and (min-width: 1200px) {
    .logo img { height: 50px; }
    body { padding-top: 50px; }
    nav ul.menu { gap: 18px; font-size: 0.95rem; }
    .header-btn { padding: 6px 12px; font-size: 0.9rem; }
}

@media screen and (max-width: 1199px) and (min-width: 1024px) {
    .logo img { height: 45px; }
    body { padding-top: 45px; }
    nav ul.menu { gap: 15px; font-size: 0.9rem; }
    .header-btn { padding: 5px 10px; font-size: 0.85rem; }
}

@media screen and (max-width: 1023px) and (min-width: 768px) {
    .logo img { height: 40px; }
    body { padding-top: 40px; }
    nav ul.menu { gap: 12px; font-size: 0.85rem; }
    .header-btn { padding: 4px 8px; font-size: 0.8rem; }
}

/* Móviles */
@media screen and (max-width: 767px) and (min-width: 600px) {
    .logo img { height: 38px; }
    body { padding-top: 38px; }
    nav ul.menu { gap: 10px; font-size: 0.8rem; }
    .header-btn { padding: 4px 8px; font-size: 0.75rem; }
}

@media screen and (max-width: 599px) and (min-width: 480px) {
    .logo img { height: 35px; }
    body { padding-top: 35px; }
    nav ul.menu { gap: 8px; font-size: 0.75rem; }
    .header-btn { padding: 3px 6px; font-size: 0.7rem; }
}

@media screen and (max-width: 479px) and (min-width: 360px) {
    .logo img { height: 30px; }
    body { padding-top: 30px; }
    nav ul.menu { gap: 6px; font-size: 0.7rem; }
    .header-btn { padding: 2px 5px; font-size: 0.65rem; }
}

@media screen and (max-width: 359px) {
    .logo img { height: 25px; }
    body { padding-top: 25px; }
    nav ul.menu { gap: 5px; font-size: 0.65rem; }
    .header-btn { padding: 2px 4px; font-size: 0.6rem; }
}