/*
 * =============================================================
 * E-FISCAL SALES SITE — Componente: Header / Navegación
 * Componentes: assets/css/components/header.css
 * Referencia: .clinerules › css-structure-enforcement
 * =============================================================
 */

/* Barra de navegación fija */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--glass-border);
    transition: box-shadow .3s ease;
    overflow: hidden;
}

.site-header--scrolled {
    box-shadow: var(--shadow-md);
}

/* Contenido interno del nav */
.site-nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    width: 100%;
    overflow: visible;
}

/* Logo — contenedor del enlace */
.site-nav__logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    flex-shrink: 0;
}

/* Imagen del logo */
.site-nav__logo-img {
    height: 38px;          /* Altura fija — ancho proporcional automático */
    width: auto;
    display: block;
    /* Transición suave al hacer hover */
    transition: opacity .2s ease, transform .2s ease;
}

.site-nav__logo:hover .site-nav__logo-img {
    opacity: .85;
    transform: scale(1.03);
}

/* Enlaces del menú */
.site-nav__links {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.site-nav__links a {
    color: var(--color-text-body);
    font-size: .95rem;
    font-weight: 500;
    transition: color .2s;
    text-decoration: none;
}

.site-nav__links a:hover {
    color: var(--color-primary);
}

.site-nav__links .btn {
    color: #ffffff;
}
.site-nav__links a.btn:focus {
    color: #dbeafe !important;
    outline: 2px solid #dbeafe;
    outline-offset: 2px;
    background: linear-gradient(135deg, #2563eb, #4f46e5) !important;
}

/* ─── HAMBURGER ──────────────────────────────────────── */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 210;
    padding: 0;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-body);
    transition: transform .3s ease, opacity .3s ease;
    border-radius: 2px;
}

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

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

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

/* ─── MENÚ TABLET ──────────────────────────────────── */
@media (max-width: 1024px) {
    .site-header {
        overflow: visible;
    }

    .hamburger {
        display: flex;
    }

    .site-nav__links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        flex-direction: column;
        background: var(--color-bg);
        padding: 100px 2rem 2rem;
        gap: 1.5rem;
        transition: right .3s ease;
        box-shadow: var(--shadow-lg);
        border-left: 1px solid var(--color-border);
        z-index: 200;
    }

    .site-nav__links.active {
        right: 0;
    }

    .site-nav__links li {
        width: 100%;
        text-align: left;
    }

    .site-nav__links a {
        display: block;
        padding: .75rem 0;
        font-size: 1.1rem;
    }

    .site-nav__links .btn--nav {
        text-align: center;
    }

    .site-nav__logo {
        z-index: 210;
    }
}


/* ─── BOTÓN DE CAMBIO DE TEMA ──────────────────────────── */
.btn-tema {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-pill);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: box-shadow .2s ease, transform .2s ease, background .3s ease;
    flex-shrink: 0;
}

.btn-tema i {
    font-size: 1rem;
    color: var(--color-text-body);
    transition: color .3s ease;
    /* Restablecer posible herencia de transform del ícono */
    pointer-events: none;
}

.btn-tema:hover {
    box-shadow: var(--shadow-md);
    transform: scale(1.08);
}

/* En modo oscuro el ícono se aclara */
[data-tema="oscuro"] .btn-tema i {
    color: var(--color-text-on-dark);
}