/* ==========================================================================
   CLÍNICA DENTAL DÍEZ - NAVEGACIÓN MODULAR (navigation.css)
   ========================================================================== */

/* --- ESTRUCTURA GENERAL DE CABECERA Y MENÚ --- */

#header {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    padding: 0;
    margin: 0;
    position: relative;
    z-index: 1000;
}

#logo {
    text-align: center;
    margin: 0.8em 0;
    padding: 0;
}

/* Logo principal en escritorio */
#logo img {
    max-width: 100%;
    height: auto;
    max-height: 72px;
}

/* Barra del Menú Principal */
#nav {
    display: block;
    width: 100%;
    background: #505050;
    background-image: linear-gradient(to bottom, #585858, #484848);
    box-shadow: 0 2px 5px rgba(0,0,0,0.3);
    padding: 0;
    margin: 0;
    z-index: 99999;
}

/* Ocultar la barra integrada de móvil en vista escritorio */
.mobile-nav-bar {
    display: none;
}

/* --- VISTA ESCRITORIO (PC) --- */

#nav > ul {
    display: flex;
    justify-content: center;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
    width: 100%;
}

#nav ul li {
    position: relative;
    list-style: none;
    margin: 0;
    padding: 0;
}

/* Enlaces principales del menú */
#nav > ul > li > a {
    display: block;
    padding: 0.65em 1.3em;
    color: #e0e0e0;
    text-decoration: none;
    font-weight: 400;
    font-size: 1.1em;
    transition: background-color 0.15s ease, color 0.15s ease;
    border-bottom: 3px solid transparent;
}

#nav > ul > li:hover > a {
    background: #383838;
    color: #ffffff;
}

/* OPCIÓN SELECCIONADA / PÁGINA ACTIVA (.current) */
#nav > ul > li.current > a {
    background: #333333;
    color: #ffffff;
    font-weight: 700;
    font-size: 1.15em;
    border-bottom: 3px solid #37c0fb;
    box-shadow: inset 0 -2px 4px rgba(0,0,0,0.2);
}

/* Ocultar pseudoelementos/flechas heredadas */
#nav > ul > li.current:before {
    display: none;
    content: none;
}

/* --- DESPLEGABLES EN HOVER (Nivel 1 y Nivel 2) --- */

#nav > ul > li > ul,
#nav ul ul ul {
    display: block;
    position: absolute;
    top: 100%;
    left: 0;
    width: 265px;
    background: #282828;
    border-radius: 6px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.4);
    padding: 0.5em 0;
    margin: 0;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.2s ease;
    z-index: 10000;
    text-align: left;
}

#nav ul ul ul {
    top: 0;
    left: 100%;
    margin-left: 2px;
}

#nav ul li:hover > ul {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

#nav ul ul li a {
    display: block;
    padding: 0.6em 1.2em;
    color: #cccccc;
    text-decoration: none;
    font-size: 1.0em;
    white-space: nowrap;
    font-weight: 400;
}

#nav ul ul li:hover > a {
    color: #ffffff;
    background: #353535;
}

/* Submenú seleccionado */
#nav ul ul li.current > a {
    color: #37c0fb;
    font-weight: 700;
}


/* ==========================================================================
   VISTA MÓVIL Y TABLET (Ancho <= 980px)
   ========================================================================== */

@media screen and (max-width: 980px) {

    #nav {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
    }

    /* Ajustado a la nueva altura más fina de la barra */
    #header {
        display: block;
        padding-top: 42px;
        margin: 0;
    }

    #logo {
        display: none;
    }

    .mobile-nav-bar {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0.3em 0.6em; /* Reducido para una barra menos alta */
        width: 100%;
        box-sizing: border-box;
        min-height: 42px;
    }

    /* Botón hamburguesa más sutil y proporcionado */
    .nav-toggle {
        background: transparent;
        color: #ffffff;
        border: none;
        font-size: 1.6rem; /* Reducido para no inflar la barra */
        line-height: 1;
        cursor: pointer;
        padding: 0.2em 0.4em;
        margin: 0;
        width: auto;
        flex: 0 0 auto;
        display: inline-flex;
        align-items: center;
        justify-content: flex-start;
        outline: none;
    }

    /* Contenedor del logo con límites elásticos */
    .mobile-logo-link {
        display: inline-flex;
        align-items: center;
        background: #ffffff;
        padding: 3px 8px;
        border-radius: 4px;
        box-shadow: 0 1px 3px rgba(0,0,0,0.3);
        margin: 0;
        text-decoration: none;
        flex: 0 1 auto; /* Permite encoger si falta espacio */
        max-width: calc(100% - 50px); /* Respeta el espacio del botón hamburguesa */
    }

    /* Logo adaptable: se ajusta a lo ancho sin cortarse */
    .mobile-logo-link img {
        max-height: 24px; /* Altura máxima controlada */
        height: auto;
        width: auto;
        max-width: 100%; /* Jamás desbordará la pantalla */
        object-fit: contain;
    }

    #nav > ul {
        display: none;
        flex-direction: column;
        background: #383838;
        width: 100%;
        margin: 0;
        padding: 0;
        max-height: calc(100vh - 42px); /* Ajustado a la nueva cabecera */
        overflow-y: auto;
    }

    #nav.is-active > ul {
        display: flex;
    }

    #nav ul li {
        width: 100%;
        text-align: left;
        border-bottom: 1px solid #484848;
    }

    #nav > ul > li > a {
        padding: 0.85em 1.2em;
        color: #ffffff;
        font-size: 1.1em;
        border-bottom: none;
    }

    #nav > ul > li.current > a {
        background: #282828;
        color: #37c0fb;
        font-weight: 700;
        font-size: 1.15em;
        padding-left: 1.5em;
    }

    #nav ul ul {
        position: static;
        width: 100%;
        box-shadow: none;
        background: #252525;
        border-radius: 0;
        opacity: 1;
        visibility: visible;
        transform: none;
        display: none;
        padding-left: 1.2em;
    }

    #nav ul li.is-open > ul {
        display: block;
    }
}