/**
 * Menu Styles - Mobile-First
 * Optimizado para rendimiento y accesibilidad
 */

/* Variables CSS */
:root {
    --nav-bg: #ffffff;
    --nav-text: #1f2937;
    --nav-hover: #2563eb;
    --nav-border: #e5e7eb;
    --nav-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

/* Contenedor del menú */
#menu-container {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--nav-bg);
    box-shadow: var(--nav-shadow);
}

/* Navegación principal */
.main-nav {
    width: 100%;
    background: var(--nav-bg);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 70px;
}

/* Logo */
.nav-logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--nav-text);
    font-weight: 600;
    font-size: 0.875rem;
    transition: var(--transition);
}

.logo-link:hover {
    opacity: 0.8;
}

.logo-image {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.logo-text {
    display: none; /* Oculto en móvil */
}

/* Toggle móvil */
.nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.hamburger-line {
    width: 25px;
    height: 3px;
    background: var(--nav-text);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-toggle.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.nav-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Menú */
.nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    max-height: 0;
    overflow: hidden;
    background: var(--nav-bg);
    list-style: none;
    margin: 0;
    padding: 0;
    flex-direction: column;
    transition: max-height 0.3s ease;
    box-shadow: var(--nav-shadow);
}

.nav-menu.active {
    max-height: 90vh;
    overflow-y: auto;
}

.nav-menu li {
    border-bottom: 1px solid var(--nav-border);
}

/* Enlaces */
.nav-link,
.dropdown-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0.75rem 1rem;
    color: var(--nav-text);
    text-decoration: none;
    font-size: 0.95rem;
    background: none;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
}

.nav-link:hover,
.dropdown-toggle:hover {
    background: #f9fafb;
    color: var(--nav-hover);
}

.dropdown-icon {
    font-size: 0.75rem;
    transition: transform 0.3s ease;
}

.nav-item-dropdown.active .dropdown-icon {
    transform: rotate(180deg);
}

/* Dropdown */
.dropdown-menu {
    max-height: 0;
    overflow: hidden;
    list-style: none;
    margin: 0;
    padding: 0;
    background: #f9fafb;
    transition: max-height 0.3s ease;
}

.nav-item-dropdown.active .dropdown-menu {
    max-height: 500px;
}

.dropdown-link {
    display: block;
    padding: 0.6rem 1rem 0.6rem 2.5rem;
    color: var(--nav-text);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.dropdown-link:hover {
    background: #f3f4f6;
    color: var(--nav-hover);
}

/* Avatar */
.nav-avatar {
    margin-left: auto;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #e5e7eb;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    cursor: pointer;
    transition: var(--transition);
}

.user-avatar:hover {
    background: #d1d5db;
}

.avatar-icon {
    font-size: 1.25rem;
}

.user-status-badge {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #9ca3af;
    border: 2px solid var(--nav-bg);
}

.user-status-badge.online {
    background: #10b981;
}

/* Desktop (768px+) */
@media (min-width: 768px) {
    .nav-toggle {
        display: none;
    }

    .nav-menu {
        position: static;
        max-height: none;
        overflow: visible;
        display: flex;
        flex-direction: row;
        align-items: center;
        width: auto;
        box-shadow: none;
        background: transparent;
    }

    .nav-menu li {
        border-bottom: none;
        position: relative;
    }

    .nav-link,
    .dropdown-toggle {
        padding: 0.6rem 0.8rem;
        width: auto;
    }

    .logo-text {
        display: inline;
    }

    .dropdown-menu {
        position: absolute;
        top: 100%;
        left: 0;
        min-width: 200px;
        background: var(--nav-bg);
        box-shadow: var(--nav-shadow);
        border-radius: 8px;
        max-height: none;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
    }

    .nav-item-dropdown.active .dropdown-menu {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
        max-height: 500px;
    }

    .dropdown-link {
        padding: 0.5rem 0.8rem;
    }

    .nav-avatar .dropdown-menu {
        right: 0;
        left: auto;
    }
}

/* Accesibilidad */
.nav-link:focus,
.dropdown-toggle:focus,
.dropdown-link:focus {
    outline: 2px solid var(--nav-hover);
    outline-offset: 2px;
}

/* Prefers reduced motion */
@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        animation: none !important;
    }
}