/* ==============================================
   XMART FLOW - ESTILOS DE NAVEGACIÓN UNIFICADOS
   Solución integral para navegación multiidioma
   ============================================== */

/* ==============================================
   VARIABLES CSS GLOBALES
   ============================================== */
:root {
    --nav-bg-primary: rgba(26, 29, 35, 0.95);
    --nav-bg-scrolled: rgba(26, 29, 35, 0.98);
    --nav-text-primary: #E6EDF3;
    --nav-text-secondary: #8B949E;
    --nav-accent: #58A6FF;
    --nav-accent-hover: #79C0FF;
    --nav-border: rgba(255, 255, 255, 0.1);
    --nav-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    --nav-transition: all 0.3s ease;
    --nav-border-radius: 10px;
}

/* ==============================================
   HEADER Y NAVEGACIÓN PRINCIPAL
   ============================================== */

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--nav-bg-primary);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--nav-transition);
    border-bottom: 1px solid transparent;
}

header.scrolled {
    background-color: var(--nav-bg-scrolled);
    box-shadow: var(--nav-shadow);
    border-bottom-color: var(--nav-border);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
}

/* ==============================================
   LOGO
   ============================================== */

.logo {
    font-family: 'Inter', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--nav-text-primary);
    display: flex;
    align-items: center;
    transition: var(--nav-transition);
    text-decoration: none;
}

.logo:hover {
    transform: scale(1.05);
    color: var(--nav-text-primary);
}

.logo i {
    color: var(--nav-accent);
    margin-right: 10px;
    font-size: 1.8rem;
}

.logo .flow {
    color: var(--nav-accent);
}

/* ==============================================
   MENÚ DE NAVEGACIÓN
   ============================================== */

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    align-items: center;
}

.nav-item {
    position: relative;
    margin: 0 1rem;
}

.nav-link {
    color: var(--nav-text-primary);
    font-weight: 500;
    padding: 0.5rem 0;
    transition: var(--nav-transition);
    cursor: pointer;
    position: relative;
    text-decoration: none;
    display: block;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--nav-accent);
    transition: var(--nav-transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--nav-accent);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* ==============================================
   MEGA MENÚ
   ============================================== */

.mega-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 280px;
    background-color: var(--nav-bg-scrolled);
    border: 1px solid var(--nav-border);
    border-radius: var(--nav-border-radius);
    box-shadow: var(--nav-shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--nav-transition);
    z-index: 100;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.nav-item:hover .mega-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.mega-menu-item {
    padding: 0.8rem 1.5rem;
    border-bottom: 1px solid var(--nav-border);
    display: flex;
    align-items: center;
    color: var(--nav-text-primary);
    transition: var(--nav-transition);
    cursor: pointer;
    text-decoration: none;
}

.mega-menu-item:last-child {
    border-bottom: none;
}

.mega-menu-item:hover {
    background-color: rgba(88, 166, 255, 0.1);
    color: var(--nav-accent);
}

.mega-menu-item i {
    color: var(--nav-accent);
    margin-right: 15px;
    transition: var(--nav-transition);
    width: 20px;
    text-align: center;
}

.mega-menu-item:hover i {
    transform: translateX(5px);
}

/* ==============================================
   SELECTOR DE IDIOMAS
   ============================================== */

.language-selector {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 1001;
    background-color: var(--nav-bg-scrolled);
    border-radius: var(--nav-border-radius);
    padding: 10px;
    box-shadow: var(--nav-shadow);
    transition: var(--nav-transition);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--nav-border);
}

.language-nav {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
}

.language-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(26, 29, 35, 0.8);
    color: var(--nav-text-primary);
    border: 1px solid var(--nav-accent);
    border-radius: 8px;
    font-size: 12px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--nav-transition);
    cursor: pointer;
}

.language-link:hover {
    background-color: var(--nav-accent);
    color: #1A1D23;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(88, 166, 255, 0.3);
}

.language-link.active {
    background-color: var(--nav-accent);
    color: #1A1D23;
    box-shadow: 0 0 10px rgba(88, 166, 255, 0.5);
}

.language-info {
    margin-top: 8px;
    text-align: center;
}

.language-info small {
    color: var(--nav-text-secondary);
    font-size: 10px;
    display: block;
}

/* ==============================================
   BOTÓN MENÚ MÓVIL
   ============================================== */

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--nav-text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 5px;
    transition: var(--nav-transition);
}

.menu-toggle:hover {
    background-color: rgba(88, 166, 255, 0.1);
    color: var(--nav-accent);
}

/* ==============================================
   ESTILOS RTL (ÁRABE)
   ============================================== */

[dir="rtl"] .logo i {
    margin-right: 0;
    margin-left: 10px;
}

[dir="rtl"] .mega-menu {
    left: auto;
    right: 0;
}

[dir="rtl"] .mega-menu-item i {
    margin-right: 0;
    margin-left: 15px;
}

[dir="rtl"] .mega-menu-item:hover i {
    transform: translateX(-5px);
}

[dir="rtl"] .nav-link::after {
    left: auto;
    right: 0;
}

[dir="rtl"] .language-selector {
    right: auto;
    left: 20px;
}

/* ==============================================
   RESPONSIVE - TABLET
   ============================================== */

@media (max-width: 1024px) {
    .nav-item {
        margin: 0 0.5rem;
    }
    
    .mega-menu {
        min-width: 250px;
    }
    
    .language-selector {
        top: 70px;
        right: 15px;
        padding: 8px;
    }
    
    [dir="rtl"] .language-selector {
        right: auto;
        left: 15px;
    }
}

/* ==============================================
   RESPONSIVE - MÓVIL
   ============================================== */

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 280px;
        height: calc(100vh - 70px);
        background-color: var(--nav-bg-scrolled);
        flex-direction: column;
        align-items: flex-start;
        padding: 2rem 0;
        box-shadow: var(--nav-shadow);
        transition: var(--nav-transition);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        border-right: 1px solid var(--nav-border);
        overflow-y: auto;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-item {
        width: 100%;
        margin: 0;
        border-bottom: 1px solid var(--nav-border);
    }
    
    .nav-item:last-child {
        border-bottom: none;
    }
    
    .nav-link {
        padding: 1rem 2rem;
        width: 100%;
        text-align: left;
        border-bottom: none;
    }
    
    .nav-link::after {
        display: none;
    }
    
    .mega-menu {
        position: static;
        width: 100%;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        border-radius: 0;
        background-color: rgba(88, 166, 255, 0.05);
        display: none;
    }
    
    .nav-item:hover .mega-menu,
    .nav-item.active .mega-menu {
        display: block;
    }
    
    .mega-menu-item {
        padding: 0.8rem 3rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    
    .language-selector {
        top: 20px;
        right: 70px;
        padding: 6px;
    }
    
    .language-nav {
        gap: 4px;
    }
    
    .language-link {
        width: 32px;
        height: 32px;
        font-size: 10px;
    }
    
    /* RTL móvil */
    [dir="rtl"] .nav-menu {
        left: auto;
        right: -100%;
        border-right: none;
        border-left: 1px solid var(--nav-border);
    }
    
    [dir="rtl"] .nav-menu.active {
        right: 0;
    }
    
    [dir="rtl"] .nav-link {
        text-align: right;
    }
    
    [dir="rtl"] .language-selector {
        right: auto;
        left: 70px;
    }
}

/* ==============================================
   RESPONSIVE - MÓVIL PEQUEÑO
   ============================================== */

@media (max-width: 480px) {
    nav {
        padding-left: 15px;
        padding-right: 15px;
    }
    
    .logo {
        font-size: 1.3rem;
    }
    
    .logo i {
        font-size: 1.5rem;
        margin-right: 8px;
    }
    
    .nav-menu {
        width: 100%;
        left: -100%;
    }
    
    .language-selector {
        top: 15px;
        right: 60px;
        padding: 5px;
    }
    
    .language-link {
        width: 28px;
        height: 28px;
        font-size: 9px;
    }
    
    /* RTL móvil pequeño */
    [dir="rtl"] .logo i {
        margin-right: 0;
        margin-left: 8px;
    }
    
    [dir="rtl"] .nav-menu {
        right: -100%;
    }
    
    [dir="rtl"] .language-selector {
        right: auto;
        left: 60px;
    }
}

/* ==============================================
   ANIMACIONES Y TRANSICIONES
   ============================================== */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
    }
    to {
        transform: translateX(0);
    }
}

@keyframes slideInLeft {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

.nav-menu.active {
    animation: slideInRight 0.3s ease;
}

[dir="rtl"] .nav-menu.active {
    animation: slideInLeft 0.3s ease;
}

.mega-menu {
    animation: fadeInUp 0.3s ease;
}

/* ==============================================
   MEJORAS DE ACCESIBILIDAD
   ============================================== */

.nav-link:focus,
.language-link:focus,
.menu-toggle:focus {
    outline: 2px solid var(--nav-accent);
    outline-offset: 2px;
}

.mega-menu-item:focus {
    background-color: rgba(88, 166, 255, 0.1);
    outline: 1px solid var(--nav-accent);
}

/* Reducir movimiento para usuarios que lo prefieren */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ==============================================
   ESTADOS DE CARGA
   ============================================== */

.nav-loading {
    opacity: 0.5;
    pointer-events: none;
}

.nav-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--nav-accent);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}