/**
 * Header Styles - Refactorizado Mobile-First
 * 
 * @package Senda
 */

/* ==========================================================================
   Variables
   ========================================================================== */
:root {
    --header-height: 70px;
    --header-height-mobile: 60px;
    --menu-transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ==========================================================================
   Base Header Styles (Mobile First)
   ========================================================================== */
.site-header {
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--menu-transition);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: var(--header-height-mobile);
    padding: 0.5rem 0;
    gap: 1rem;
}

/* ==========================================================================
   Logo
   ========================================================================== */
.site-branding {
    flex-shrink: 0;
}

.site-logo {
    display: block;
    line-height: 1;
}

.logo-img {
    height: 45px;
    width: auto;
    display: block;
}

/* ==========================================================================
   Navigation - Mobile First
   ========================================================================== */
.main-navigation {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 320px;
    height: 100vh;
    background: var(--white);
    box-shadow: -5px 0 20px rgba(0, 0, 0, 0.15);
    transition: right 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    z-index: 999;
    overflow-y: auto;
    padding-top: var(--header-height-mobile);
}

.main-navigation.is-active {
    right: 0;
}

.nav-menu {
    list-style: none;
    margin: 0;
    padding: 1rem 0;
}

.menu-item {
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.menu-item a {
    display: block;
    padding: 1.25rem 1.5rem;
    color: var(--text-color);
    text-decoration: none;
    font-size: 1.1rem;
    transition: var(--menu-transition);
    position: relative;
}

.menu-item a:hover,
.menu-item a:focus {
    background: rgba(92, 195, 212, 0.08);
    color: var(--primary-color);
    padding-left: 2rem;
}

.current-menu-item a {
    background: rgba(92, 195, 212, 0.1);
    color: var(--primary-color);
    font-weight: 600;
}

.current-menu-item a::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--primary-color);
}

/* ==========================================================================
   Language Selector
   ========================================================================== */
.language-selector {
    position: relative;
    order: 0; /* Después del logo en móvil */
    margin-left: auto; /* Empujar hacia la derecha */
    margin-right: 0.5rem;
}

/* Desktop selector */
.lang-desktop {
    display: none;
}

.lang-link {
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.25rem 0.5rem;
    transition: color 0.3s ease;
}

.lang-link:hover,
.lang-link.active {
    color: var(--primary-color);
}

.lang-separator {
    color: rgba(0, 0, 0, 0.2);
    margin: 0 0.25rem;
    font-size: 0.875rem;
}

/* Mobile toggle */
.lang-toggle {
    background: transparent;
    border: none;
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
    color: var(--text-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    transition: var(--menu-transition);
    font-weight: 500;
}

.lang-toggle:hover,
.lang-toggle:focus {
    color: var(--primary-color);
}

.lang-toggle[aria-expanded="true"] svg {
    transform: rotate(180deg);
}

.lang-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.5rem;
    background: var(--white);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--menu-transition);
    min-width: 150px;
}

.lang-toggle[aria-expanded="true"] + .lang-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    color: var(--text-color);
    text-decoration: none;
    transition: var(--menu-transition);
}

.lang-option:hover,
.lang-option:focus {
    background: rgba(92, 195, 212, 0.1);
    color: var(--primary-color);
}

.lang-option.active {
    background: var(--accent-color);
    color: var(--primary-color);
    font-weight: 500;
}

.lang-code {
    font-weight: 600;
    font-size: 0.875rem;
}

.lang-name {
    font-size: 0.75rem;
    opacity: 0.7;
}

/* Mobile: Solo mostrar código */
@media (max-width: 480px) {
    .lang-name {
        display: none;
    }
    .lang-menu {
        min-width: 80px;
    }
}

/* ==========================================================================
   CTA Button
   ========================================================================== */
.header-cta {
    display: none; /* Oculto en móvil */
}

.btn-primary {
    background: var(--accent-color);
    color: var(--primary-color);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.875rem;
    transition: var(--menu-transition);
    display: inline-block;
    border: 2px solid transparent;
}

.btn-primary:hover,
.btn-primary:focus {
    background: transparent;
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(92, 195, 212, 0.3);
}

/* ==========================================================================
   Mobile Menu Toggle
   ========================================================================== */
.mobile-menu-toggle {
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
}

.hamburger-box {
    width: 24px;
    height: 24px;
    position: relative;
    display: inline-block;
}

.hamburger-inner {
    width: 24px;
    height: 2px;
    background: var(--text-color);
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    transition: background-color 0.3s ease;
}

.hamburger-inner::before,
.hamburger-inner::after {
    content: '';
    width: 24px;
    height: 2px;
    background: var(--text-color);
    position: absolute;
    left: 0;
    transition: all 0.3s ease;
}

.hamburger-inner::before {
    top: -8px;
}

.hamburger-inner::after {
    bottom: -8px;
}

/* Estado activo */
.mobile-menu-toggle[aria-expanded="true"] .hamburger-inner {
    background-color: transparent;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-inner::before {
    transform: rotate(45deg);
    top: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-inner::after {
    transform: rotate(-45deg);
    bottom: 0;
}

/* ==========================================================================
   Mobile Menu Overlay
   ========================================================================== */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: var(--menu-transition);
    z-index: 998;
    pointer-events: none;
}

.mobile-menu-overlay.is-active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

/* ==========================================================================
   Desktop Styles
   ========================================================================== */
@media (min-width: 769px) {
    .header-inner {
        min-height: var(--header-height);
        padding: 1rem 0;
    }
    
    .logo-img {
        height: 60px;
    }
    
    /* Navegación Desktop */
    .main-navigation {
        position: static;
        width: auto;
        max-width: none;
        height: auto;
        background: transparent;
        box-shadow: none;
        padding: 0;
        flex: 1;
        display: flex;
        justify-content: center;
        overflow: visible;
    }
    
    .nav-menu {
        display: flex;
        align-items: center;
        gap: 2rem;
        padding: 0;
    }
    
    .menu-item {
        border: none;
    }
    
    .menu-item a {
        padding: 0.5rem 0;
        font-size: var(--font-size-text);
        font-weight: var(--font-weight-accent);
        position: relative;
    }
    
    .menu-item a:hover,
    .menu-item a:focus {
        background: transparent;
        padding-left: 0;
    }
    
    .menu-item a::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        width: 0;
        height: 2px;
        background: var(--accent-color);
        transform: translateX(-50%);
        transition: width 0.3s ease;
    }
    
    .menu-item a:hover::after {
        width: 80%;
    }
    
    .current-menu-item a::after {
        width: 80%;
        background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    }
    
    .current-menu-item a {
        background: transparent;
        font-weight: var(--font-weight-accent);
    }
    
    .current-menu-item a::before {
        display: none;
    }
    
    /* Language Selector Desktop */
    .language-selector {
        order: 0;
        margin: 0 2rem;
        margin-left: 0;
    }
    
    .lang-desktop {
        display: flex;
        align-items: center;
    }
    
    .lang-toggle,
    .lang-menu {
        display: none;
    }
    
    /* CTA Desktop */
    .header-cta {
        display: block;
        flex-shrink: 0;
    }
    
    /* Ocultar toggle móvil */
    .mobile-menu-toggle {
        display: none;
    }
    
    /* Ocultar overlay */
    .mobile-menu-overlay {
        display: none;
    }
}

/* ==========================================================================
   Responsive Adjustments
   ========================================================================== */
@media (min-width: 769px) and (max-width: 1024px) {
    .nav-menu {
        gap: 1.5rem;
    }
    
    .menu-item a {
        font-size: 0.9rem;
    }
    
    .btn-primary {
        padding: 0.6rem 1.2rem;
        font-size: 0.8rem;
    }
}

@media (min-width: 1025px) and (max-width: 1200px) {
    .container {
        padding: 0 2rem;
    }
}

/* ==========================================================================
   Utilities
   ========================================================================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ==========================================================================
   Sticky Header Effect
   ========================================================================== */
.site-header.is-scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

@media (min-width: 769px) {
    .site-header.is-scrolled .header-inner {
        min-height: 60px;
        transition: min-height 0.3s ease;
    }
    
    .site-header.is-scrolled .logo-img {
        height: 50px;
        transition: height 0.3s ease;
    }
}