/* Variables CSS */
:root {
    --header-height: 120px;
    --header-bg-color: rgba(255, 255, 255, 0.98);
    --header-blur: 15px;
    --header-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --primary-color: #007bff;
    --transition-speed: 0.3s;
    --hover-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

/* Reset y compatibilidad base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Estilos base del header */
.navbar-2 {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--header-height);
    background: var(--header-bg-color);
    -webkit-backdrop-filter: blur(var(--header-blur));
    backdrop-filter: blur(var(--header-blur));
    box-shadow: var(--header-shadow);
    -webkit-transition: all var(--transition-speed) ease;
    -moz-transition: all var(--transition-speed) ease;
    -o-transition: all var(--transition-speed) ease;
    transition: all var(--transition-speed) ease;
    display: -webkit-flex;
    display: -moz-flex;
    display: -ms-flex;
    display: -o-flex;
    display: flex;
    -webkit-align-items: center;
    -moz-align-items: center;
    -ms-align-items: center;
    -o-align-items: center;
    align-items: center;
    -webkit-justify-content: space-between;
    -moz-justify-content: space-between;
    -ms-justify-content: space-between;
    -o-justify-content: space-between;
    justify-content: space-between;
    padding: 0 30px;
}

/* Ajuste para el menú fijo */
.navbar-2.fixed {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 1);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.15);
    padding: 0 30px;
}

/* Ocultar menú en la sección about-hero-interaction */
.about-hero-interaction {
    margin-top: var(--header-height);
    padding-top: var(--header-height);
    position: relative;
    z-index: 1;
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
}

.about-hero-interaction .navbar-2 {
    display: block !important;
    position: fixed !important;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
}

/* Efectos hover mejorados */
.nav-link-2 {
    position: relative;
    -webkit-transition: all var(--transition-speed) ease;
    -moz-transition: all var(--transition-speed) ease;
    -o-transition: all var(--transition-speed) ease;
    transition: all var(--transition-speed) ease;
    padding: 10px 15px;
}

.nav-link-2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    -webkit-transition: width var(--transition-speed) ease;
    -moz-transition: width var(--transition-speed) ease;
    -o-transition: width var(--transition-speed) ease;
    transition: width var(--transition-speed) ease;
}

.nav-link-2:hover {
    color: var(--primary-color) !important;
    -webkit-transform: translateY(-2px);
    -moz-transform: translateY(-2px);
    -ms-transform: translateY(-2px);
    -o-transform: translateY(-2px);
    transform: translateY(-2px);
}

.nav-link-2:hover::after {
    width: 100%;
}

/* Botón de contacto mejorado */
.primary-button-3 {
    position: relative;
    -webkit-transition: all var(--transition-speed) ease;
    -moz-transition: all var(--transition-speed) ease;
    -o-transition: all var(--transition-speed) ease;
    transition: all var(--transition-speed) ease;
    overflow: hidden;
}

.primary-button-3::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 123, 255, 0.5), transparent);
    -webkit-transition: left var(--transition-speed) ease;
    -moz-transition: left var(--transition-speed) ease;
    -o-transition: left var(--transition-speed) ease;
    transition: left var(--transition-speed) ease;
}

.primary-button-3:hover {
    -webkit-transform: translateY(-2px);
    -moz-transform: translateY(-2px);
    -ms-transform: translateY(-2px);
    -o-transform: translateY(-2px);
    transform: translateY(-2px);
    box-shadow: var(--hover-shadow);
}

/* Fallback para backdrop-filter */
@supports not ((-webkit-backdrop-filter: none) or (backdrop-filter: none)) {
    .navbar-2 {
        background: rgba(255, 255, 255, 1);
    }
    
    .navbar-2.fixed {
        background: rgba(255, 255, 255, 1);
    }
}

/* Fallback para CSS Grid y Flexbox */
@supports not (display: grid) {
    .navbar-2 {
        display: block;
    }
}

/* Fallback para transform */
@supports not (transform: translateZ(0)) {
    .about-hero-interaction,
    .about-hero-interaction .navbar-2 {
        -webkit-transform: none;
        transform: none;
    }
}

.primary-button-3:hover::before {
    left: 100%;
}

/* Logo mejorado */
.brand {
    transition: all var(--transition-speed) ease;
    display: flex;
    align-items: center;
}

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

.brand img {
    transition: all var(--transition-speed) ease;
    height: 100px;
    width: auto;
    object-fit: contain;
    margin-top: -20px;
}

/* Responsive design - Mobile */
@media screen and (max-width: 768px) {
    :root {
        --header-height: 140px;
    }
    
    .brand img {
        height: 120px;
        margin-top: -30px;
    }
    
    .navbar-2 {
        padding: 0 20px;
    }
    
    .nav-menu-3 {
        padding: 20px 0;
    }
    
    .nav-link-2 {
        padding: 15px 10px;
        font-size: 1.2rem;
    }
    
    .primary-button-3 {
        padding: 15px 30px;
        font-size: 1.1rem;
    }
}

/* Responsive design - Tablet */
@media screen and (max-width: 1024px) {
    :root {
        --header-height: 130px;
    }
    
    .brand img {
        height: 110px;
        margin-top: -25px;
    }
    
    .navbar-2 {
        padding: 0 25px;
    }
}

.brand:hover img {
    filter: brightness(1.1) contrast(1.1);
}

/* Menú móvil mejorado */
@media (max-width: 768px) {
    .navbar-2 {
        background: rgba(255, 255, 255, 1);
        backdrop-filter: none;
        box-shadow: 0 2px 15px rgba(0, 0, 0, 0.15);
    }
    
    .menu-button {
        transition: all var(--transition-speed) ease;
        padding: 10px;
    }
    
    .menu-button:hover {
        transform: scale(1.1);
        background: rgba(0, 123, 255, 0.1);
        border-radius: 50%;
    }
    
    .nav-menu-3 {
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        padding: 20px;
        border-radius: 10px;
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    }
}

/* Espaciado mejorado */
body {
    padding-top: calc(var(--header-height) + 20px);
}

@media (max-width: 768px) {
    body {
        padding-top: calc(var(--header-height) + 30px);
    }
}

/* Primera sección mejorada */
section:first-of-type {
    margin-top: 10px;
    padding-top: 10px;
}

@media (max-width: 768px) {
    section:first-of-type {
        margin-top: 20px;
        padding-top: 10px;
    }
}

/* Ajuste para el contenido hero */
.hero-wrapper {
    margin-top: -20px;
    padding-top: 0;
}

.hero-component {
    margin-top: 0;
    padding-top: 0;
}

/* Efectos de scroll mejorados */
.scrolled {
    background: rgba(255, 255, 255, 1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    transform: translateY(-10px);
}

.scrolled .nav-link-2 {
    color: var(--primary-color) !important;
}

.scrolled .nav-link-2::after {
    width: 100%;
}

/* Animación de entrada */
.navbar-2 {
    animation: headerFadeIn 0.5s ease-out;
}

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