/* ===================================
   NAVIGATION - MEGA MENU AVANZADO
   Navegación con mega menú y efectos premium
   =================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    z-index: var(--z-fixed);
    transition: all var(--transition-normal);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-lg);
}

/* === BARRA DE PROGRESO === */
.header-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 3px;
    background: var(--gradient-button);
    width: 0%;
    transition: width 0.1s ease;
    z-index: 1;
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg) 0;
    transition: padding var(--transition-normal);
    position: relative;
}

.header.scrolled .navbar {
    padding: var(--spacing-md) 0;
}

/* === LOGO MEJORADO === */
.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    font-weight: 700;
    font-size: var(--font-size-xl);
    color: var(--primary-blue);
    transition: all var(--transition-normal);
    position: relative;
}

.logo:hover {
    transform: scale(1.05);
}

.logo img {
    height: 40px;
    width: auto;
    margin-right: var(--spacing-sm);
    transition: all var(--transition-normal);
}

.logo-text {
    font-weight: 900;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* === NAVEGACIÓN PRINCIPAL === */
.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--gray-700);
    text-decoration: none;
    font-weight: 500;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    position: relative;
    font-size: var(--font-size-base);
}

.nav-link i {
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-blue);
    background: rgba(99, 102, 241, 0.1);
    transform: translateY(-2px);
}

.nav-link:hover i,
.nav-link.active i {
    opacity: 1;
    color: var(--primary-cyan);
}

.dropdown-icon {
    transition: transform var(--transition-normal);
    margin-left: var(--spacing-xs) !important;
}

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

/* === MEGA MENU === */
.mega-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--white);
    border-radius: var(--radius-2xl);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    border: 1px solid var(--gray-200);
    padding: var(--spacing-2xl);
    min-width: 600px;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-50%) translateY(-10px);
    transition: all var(--transition-normal);
    z-index: var(--z-dropdown);
    margin-top: var(--spacing-sm);
}

.nav-item:hover .mega-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.mega-menu-container {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: var(--spacing-2xl);
    align-items: start;
}

.mega-menu-section h4 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--primary-cyan);
    display: inline-block;
}

.mega-menu-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.mega-menu-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.mega-menu-item:hover {
    background: var(--gray-50);
    transform: translateX(5px);
}

.mega-menu-item.featured {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(6, 182, 212, 0.1));
    border: 1px solid var(--primary-cyan);
}

.mega-menu-item.featured:hover {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(6, 182, 212, 0.15));
    transform: translateX(5px) translateY(-2px);
    box-shadow: var(--shadow-md);
}

.mega-item-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-button);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.mega-item-content h5 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--spacing-xs);
}

.mega-item-content p {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    margin: 0;
}

.mega-item-badge {
    position: absolute;
    top: var(--spacing-xs);
    right: var(--spacing-xs);
    background: var(--primary-cyan);
    color: var(--white);
    font-size: var(--font-size-xs);
    font-weight: 600;
    padding: 2px var(--spacing-xs);
    border-radius: var(--radius-full);
}

/* === MEGA MENU HIGHLIGHT === */
.mega-menu-highlight {
    background: var(--gradient-hero);
    color: var(--white);
    border-radius: var(--radius-xl);
    background: var(--gradient-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
}

.mega-menu-highlight h4 {
    color: var(--primary-blue);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
}

.mega-menu-highlight p {
    color: var(--gray-600);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-lg);
}

.mega-menu-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--gradient-button);
    color: var(--white);
    text-decoration: none;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: var(--font-size-sm);
    transition: all var(--transition-normal);
}

.mega-menu-cta:hover {
    background: var(--gradient-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* === BARRA DE PROGRESO === */
.scroll-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: rgba(255, 255, 255, 0.1);
}

.scroll-progress-fill {
    height: 100%;
    background: var(--gradient-button);
    width: 0%;
    transition: width 0.1s ease;
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.5);
}

/* === HAMBURGER MENU === */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: var(--spacing-sm);
    z-index: var(--z-dropdown);
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--white);
    margin: 3px 0;
    transition: all var(--transition-normal);
    border-radius: var(--radius-sm);
}

.header.scrolled .hamburger span {
    background: var(--gray-700);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

/* === TEMA OSCURO === */
[data-theme="dark"] .header {
    background: rgba(15, 23, 42, 0.9);
    border-bottom-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .header.scrolled {
    background: rgba(15, 23, 42, 0.95);
    border-bottom-color: var(--gray-700);
}

[data-theme="dark"] .nav-links a {
    color: var(--gray-300);
}

[data-theme="dark"] .header.scrolled .nav-links a {
    color: var(--gray-300);
}

[data-theme="dark"] .mega-menu {
    background: var(--gray-800);
    border-color: var(--gray-700);
}

[data-theme="dark"] .mega-menu-section h4 {
    color: var(--primary-cyan);
}

[data-theme="dark"] .mega-menu-section a {
    color: var(--gray-400);
}

[data-theme="dark"] .mega-menu-highlight {
    background: rgba(99, 102, 241, 0.1);
}

/* === RESPONSIVE === */
@media (max-width: 1024px) {
    .mega-menu-content {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
    
    .mega-menu-highlight {
        grid-column: span 2;
    }
}

/* === MOBILE MENU OVERLAY === */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    display: none; /* Oculto por defecto */
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
    display: flex;
}

.mobile-menu-content {
    position: relative;
    width: 100%;
    max-width: 400px;
    height: 100%;
    background: var(--white);
    padding: var(--spacing-2xl);
    overflow-y: auto;
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
}

.mobile-menu-overlay.active .mobile-menu-content {
    transform: translateX(0);
}

.mobile-menu-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
}

.mobile-menu-header img {
    width: 40px;
    height: 40px;
}

.mobile-menu-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-blue);
    margin: 0;
}

.mobile-menu-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.mobile-menu-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    color: var(--gray-700);
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    position: relative;
}

.mobile-menu-item:hover {
    background: var(--gradient-card);
    color: var(--primary-purple);
}

.mobile-menu-item.active {
    background: var(--primary-blue);
    color: var(--white);
}

.mobile-menu-item i {
    width: 20px;
    text-align: center;
}

.mobile-menu-section {
    margin: var(--spacing-lg) 0;
}

.mobile-menu-section h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-md);
}

.mobile-badge {
    position: absolute;
    right: var(--spacing-sm);
    background: var(--primary-cyan);
    color: var(--white);
    font-size: var(--font-size-xs);
    padding: 2px var(--spacing-xs);
    border-radius: var(--radius-full);
    font-weight: 600;
}

@media (max-width: 768px) {
    .mobile-menu-overlay {
        display: flex; /* Solo visible en móvil */
    }
    
    .hamburger {
        display: flex;
    }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        justify-content: flex-start;
        align-items: flex-start;
        padding: var(--spacing-3xl) var(--spacing-xl);
        transition: right var(--transition-normal);
        box-shadow: var(--shadow-xl);
        gap: var(--spacing-lg);
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .nav-links a {
        color: var(--gray-700);
        width: 100%;
        padding: var(--spacing-md);
        border-radius: var(--radius-lg);
        font-size: var(--font-size-lg);
    }
    
    .nav-links a:hover {
        background: var(--gradient-card);
        color: var(--primary-purple);
    }
    
    .mega-menu {
        position: static;
        transform: none;
        width: 100%;
        margin-top: var(--spacing-md);
        opacity: 1;
        visibility: visible;
        box-shadow: none;
        border: none;
        background: transparent;
    }
    
    .mega-menu-content {
        grid-template-columns: 1fr;
        padding: 0;
        gap: var(--spacing-md);
    }
    
    .mega-menu-section {
        background: var(--gray-50);
        padding: var(--spacing-lg);
        border-radius: var(--radius-lg);
    }
    
    .mega-menu-highlight {
        margin-top: var(--spacing-md);
    }
    
    body.nav-open {
        overflow: hidden;
    }
    
    [data-theme="dark"] .nav-links {
        background: var(--gray-800);
    }
    
    [data-theme="dark"] .nav-links a {
        color: var(--gray-300);
    }
    
    [data-theme="dark"] .mega-menu-section {
        background: var(--gray-700);
    }
}

@media (max-width: 480px) {
    .navbar {
        padding: var(--spacing-sm) 0;
    }
    
    .logo img {
        height: 35px;
    }
    
    .nav-links {
        width: 100%;
        right: -100%;
        padding: var(--spacing-2xl) var(--spacing-lg);
    }
    
    .hamburger span {
        width: 20px;
        height: 2px;
    }
}