/* ============================================
   NAVBAR CSS - REDISEÑADO CON ESTILO PREMIUM
   ============================================ */

/* Reset y base */
* {
    box-sizing: border-box;
}

/* Navbar principal */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    border-bottom: 1px solid rgba(6, 182, 212, 0.1);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.03);
}

.navbar::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(6, 182, 212, 0.3), transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.08);
    border-bottom-color: rgba(6, 182, 212, 0.2);
}

.navbar.scrolled::after {
    opacity: 1;
}

/* Container del navbar */
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 3rem;
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
}

/* Logo */
.nav-logo {
    z-index: 1001;
    transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

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

.nav-logo img {
    height: 36px;
    width: auto;
    display: block;
    filter: drop-shadow(0 2px 4px rgba(6, 182, 212, 0.1));
    transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

.nav-logo:hover img {
    filter: drop-shadow(0 4px 8px rgba(6, 182, 212, 0.2));
}

/* Menu principal - DESKTOP */
.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 0.5rem;
    align-items: center;
}

.nav-item {
    margin: 0;
}

.nav-link {
    color: #374151;
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
    padding: 0.75rem 1.25rem;
    border-radius: 12px;
    position: relative;
    display: block;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.1), rgba(34, 211, 238, 0.1));
    transform: translateY(-100%);
    transition: transform 0.3s cubic-bezier(0.23, 1, 0.32, 1);
    z-index: -1;
}

.nav-link:hover::before,
.nav-link.active::before {
    transform: translateY(0);
}

.nav-link:hover {
    color: #06b6d4;
    transform: translateY(-2px);
}

.nav-link.active {
    color: #06b6d4;
}

/* Indicador de página activa */
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #06b6d4, #22d3ee);
    border-radius: 2px;
    transition: width 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

.nav-link.active::after,
.nav-link:hover::after {
    width: 60%;
}

/* Botón de iniciar sesión */
.nav-login {
    color: #06b6d4 !important;
    background: transparent;
    border: 2px solid rgba(6, 182, 212, 0.3);
    font-weight: 700;
    transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
    position: relative;
}

.nav-login::before {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.1), rgba(34, 211, 238, 0.1));
}

.nav-login:hover {
    color: #0891b2 !important;
    border-color: rgba(6, 182, 212, 0.6);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(6, 182, 212, 0.2);
}

/* Botón CTA (Registrarse) */
.nav-cta {
    background: linear-gradient(135deg, #06b6d4, #0891b2) !important;
    color: white !important;
    padding: 0.75rem 1.75rem !important;
    border-radius: 12px;
    font-weight: 700;
    transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
    box-shadow: 0 4px 15px rgba(6, 182, 212, 0.3);
    border: none;
    position: relative;
    overflow: hidden;
}

.nav-cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
}

.nav-cta:hover::before {
    width: 300px;
    height: 300px;
}

.nav-cta::after {
    display: none;
}

.nav-cta:hover {
    background: linear-gradient(135deg, #0891b2, #0e7490) !important;
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(6, 182, 212, 0.4);
}

/* Botón hamburguesa - OCULTO por defecto */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
    position: relative;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

.mobile-menu-btn:hover {
    background: rgba(6, 182, 212, 0.1);
    transform: scale(1.1);
}

.mobile-menu-btn:active {
    transform: scale(0.95);
}

.hamburger-line {
    width: 28px;
    height: 3px;
    background: linear-gradient(90deg, #06b6d4, #22d3ee);
    border-radius: 3px;
    margin: 3px 0;
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    transform-origin: center;
    box-shadow: 0 2px 4px rgba(6, 182, 212, 0.2);
}

/* Animaciones del botón hamburguesa */
.mobile-menu-btn.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
    background: linear-gradient(90deg, #ef4444, #f97316);
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.3);
}

.mobile-menu-btn.active .hamburger-line:nth-child(2) {
    opacity: 0;
    transform: scale(0) rotate(180deg);
}

.mobile-menu-btn.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
    background: linear-gradient(90deg, #ef4444, #f97316);
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.3);
}

/* ============================================
   RESPONSIVE - MOBILE
   ============================================ */

@media (max-width: 768px) {
    /* Container en mobile */
    .nav-container {
        padding: 1rem 1.25rem;
    }
    
    .nav-logo img {
        height: 32px;
    }
    
    /* Mostrar botón hamburguesa en mobile */
    .mobile-menu-btn {
        display: flex;
    }
    
    /* MENU MOBILE - OCULTO POR DEFECTO */
    .nav-menu {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(240, 249, 255, 0.98) 100%);
        backdrop-filter: blur(30px);
        -webkit-backdrop-filter: blur(30px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 1.5rem;
        
        /* ESTADO INICIAL - COMPLETAMENTE OCULTO */
        transform: translateX(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 1000;
        
        padding-top: 80px;
    }
    
    /* Decoración del menú mobile */
    .nav-menu::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: radial-gradient(circle at 20% 50%, rgba(6, 182, 212, 0.05) 0%, transparent 50%),
                    radial-gradient(circle at 80% 80%, rgba(34, 211, 238, 0.05) 0%, transparent 50%);
        pointer-events: none;
        z-index: -1;
    }
    
    /* ESTADO ACTIVO - VISIBLE */
    .nav-menu.active {
        transform: translateX(0);
        opacity: 1;
        visibility: visible;
    }
    
    /* Items del menú mobile */
    .nav-item {
        margin: 0;
        text-align: center;
        width: 100%;
        max-width: 320px;
        
        /* Inicialmente invisible para animación */
        opacity: 0;
        transform: translateY(30px);
        transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    }
    
    /* Animación de items cuando el menú está activo */
    .nav-menu.active .nav-item {
        opacity: 1;
        transform: translateY(0);
    }
    
    .nav-menu.active .nav-item:nth-child(1) { transition-delay: 0.1s; }
    .nav-menu.active .nav-item:nth-child(2) { transition-delay: 0.15s; }
    .nav-menu.active .nav-item:nth-child(3) { transition-delay: 0.2s; }
    .nav-menu.active .nav-item:nth-child(4) { transition-delay: 0.25s; }
    .nav-menu.active .nav-item:nth-child(5) { transition-delay: 0.3s; }
    .nav-menu.active .nav-item:nth-child(6) { transition-delay: 0.35s; }
    
    /* Links en mobile */
    .nav-link {
        display: block;
        padding: 1rem 2rem;
        font-size: 1.1rem;
        font-weight: 700;
        width: 100%;
        text-align: center;
        border-radius: 16px;
        margin: 0.25rem 0;
        color: #1f2937;
        background: white;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    }
    
    .nav-link::after {
        display: none;
    }
    
    .nav-link:hover {
        background: linear-gradient(135deg, rgba(6, 182, 212, 0.1), rgba(34, 211, 238, 0.1));
        color: #06b6d4;
        transform: translateY(-2px);
        box-shadow: 0 4px 15px rgba(6, 182, 212, 0.15);
    }
    
    .nav-link.active {
        background: linear-gradient(135deg, rgba(6, 182, 212, 0.15), rgba(34, 211, 238, 0.15));
        color: #06b6d4;
        box-shadow: 0 4px 15px rgba(6, 182, 212, 0.2);
    }
    
    /* Botón login en mobile */
    .nav-login {
        color: #06b6d4 !important;
        background: white !important;
        border: 2px solid rgba(6, 182, 212, 0.4);
        margin: 0.25rem 0;
    }
    
    .nav-login:hover {
        background: linear-gradient(135deg, rgba(6, 182, 212, 0.1), rgba(34, 211, 238, 0.1)) !important;
        border-color: rgba(6, 182, 212, 0.7);
        box-shadow: 0 4px 20px rgba(6, 182, 212, 0.25);
    }
    
    /* CTA en mobile */
    .nav-cta {
        margin-top: 1rem;
        padding: 1.25rem 2.5rem !important;
        font-size: 1.15rem;
        min-width: 220px;
        background: linear-gradient(135deg, #06b6d4, #0891b2) !important;
        color: white !important;
        border: none;
        box-shadow: 0 6px 25px rgba(6, 182, 212, 0.35);
    }
    
    .nav-cta:hover {
        background: linear-gradient(135deg, #0891b2, #0e7490) !important;
        transform: translateY(-3px);
        box-shadow: 0 8px 35px rgba(6, 182, 212, 0.45);
    }
}

/* Prevenir scroll cuando menú móvil está abierto */
body.menu-open {
    overflow: hidden;
    position: fixed;
    width: 100%;
}

/* ============================================
   TABLETS (769px - 1024px)
   ============================================ */

@media (min-width: 769px) and (max-width: 1024px) {
    .nav-container {
        padding: 1rem 2rem;
    }
    
    .nav-menu {
        gap: 0.25rem;
    }
    
    .nav-link {
        padding: 0.7rem 1rem;
        font-size: 14px;
    }
    
    .nav-cta {
        padding: 0.7rem 1.4rem !important;
        font-size: 14px;
    }
}

/* ============================================
   ANIMACIONES ADICIONALES
   ============================================ */

/* Efecto de brillo sutil en hover */
@media (min-width: 769px) {
    .nav-link:not(.nav-cta):not(.nav-login):hover {
        animation: shimmer 1s ease-in-out;
    }
    
    @keyframes shimmer {
        0% { background-position: -200% center; }
        100% { background-position: 200% center; }
    }
}

/* Smooth scroll para toda la página */
html {
    scroll-behavior: smooth;
}

/* Fix para iOS Safari */
@supports (-webkit-touch-callout: none) {
    .navbar {
        -webkit-backdrop-filter: blur(20px);
    }
    
    @media (max-width: 768px) {
        .nav-menu {
            -webkit-backdrop-filter: blur(30px);
        }
    }
}

/* ============================================
   ACCESIBILIDAD
   ============================================ */

/* Focus visible para navegación por teclado */
.nav-link:focus-visible,
.mobile-menu-btn:focus-visible {
    outline: 3px solid rgba(6, 182, 212, 0.5);
    outline-offset: 4px;
    border-radius: 12px;
}

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