/* ==========================================================================
   public/css/header.css | Navegación MAGNA (Magna.md › Nav Item)
   Barra crema con borde hairline, enlaces de texto y CTA pill naranja.
   ========================================================================== */

.main-nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
    background: rgba(250, 246, 241, 0.92);
    -webkit-backdrop-filter: saturate(140%) blur(12px);
    backdrop-filter: saturate(140%) blur(12px);
    border-bottom: 1px solid var(--color-sand);
}

.nav-inner {
    max-width: calc(var(--page-max-width) + 128px);
    margin: 0 auto;
    padding: 12px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-24);
}

/* Logo: se recorta el área útil de splash.png (el PNG tiene mucho margen
   transparente). La imagen se muestra con sus colores originales. */
.nav-logo-link { display: inline-flex; align-items: center; text-decoration: none; }
.nav-logo-crop {
    display: block;
    width: 42px;
    height: 44px;
    overflow: hidden;
    position: relative;
}
.nav-logo-crop .nav-logo-img {
    position: absolute;
    width: 103px;
    max-width: none;
    height: auto;
    left: -31px;
    top: -28px;
}

.nav-links {
    display: flex;
    gap: var(--spacing-4);
    align-items: center;
}

.nav-links a {
    position: relative;
    padding: 8px 12px;
    border-radius: var(--radius-nav);
    color: var(--color-slate);
    font-family: var(--font-main);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: -0.01em;
    text-decoration: none;
    transition: color 0.2s ease, background-color 0.2s ease;
}

.nav-links a:hover { color: var(--color-ink-black); background: rgba(14, 14, 15, 0.05); }

/* Estado activo: subrayado naranja */
.nav-links a.is-active { color: var(--color-ink-black); }
.nav-links a.is-active::after {
    content: '';
    position: absolute;
    left: 12px; right: 12px; bottom: 2px;
    height: 2px;
    border-radius: 2px;
    background: var(--color-ember-orange);
}

/* CTA "Acceso": Primary pill */
.nav-links a.btn-login-header {
    margin-left: var(--spacing-12);
    padding: 10px 20px;
    border-radius: var(--radius-buttons);
    background: var(--color-ember-orange);
    color: var(--color-pure-white);
}
.nav-links a.btn-login-header:hover { background: var(--color-burnt-rust); color: var(--color-pure-white); }

/* Botón hamburguesa */
.mobile-nav-toggle {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 14px 8px;
    z-index: 2000;
}

.hamburger,
.hamburger::before,
.hamburger::after {
    width: 22px;
    height: 2px;
    border-radius: 2px;
    background: var(--color-ink-black);
    transition: all 0.3s ease-in-out;
}
.hamburger { position: relative; }
.hamburger::before,
.hamburger::after { content: ''; position: absolute; left: 0; }
.hamburger::before { transform: translateY(-7px); }
.hamburger::after  { transform: translateY(7px); }

.mobile-nav-toggle[aria-expanded="true"] .hamburger { background: transparent; }
.mobile-nav-toggle[aria-expanded="true"] .hamburger::before { transform: rotate(45deg); }
.mobile-nav-toggle[aria-expanded="true"] .hamburger::after  { transform: rotate(-45deg); }

/* RESPONSIVO */
@media (max-width: 992px) {
    /* backdrop-filter convertiría a la barra en el bloque contenedor del
       drawer fijo; se desactiva en móvil para que el menú cubra la pantalla. */
    .main-nav { -webkit-backdrop-filter: none; backdrop-filter: none; background: var(--color-warm-canvas); }

    .mobile-nav-toggle { display: block; }

    .nav-links {
        position: fixed;
        inset: 0 0 0 auto;
        width: min(360px, 85vw);
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        gap: var(--spacing-4);
        background: var(--color-warm-canvas);
        border-left: 1px solid var(--color-sand);
        padding: 96px 24px 24px;
        z-index: 1500;
        transform: translateX(100%);
        transition: transform 0.5s cubic-bezier(0.77, 0.2, 0.05, 1.0);
    }

    .nav-links[data-visible="true"] { transform: translateX(0%); }

    .nav-links a { font-size: 20px; padding: 12px; letter-spacing: -0.02em; }
    .nav-links a.is-active::after { left: 12px; right: auto; width: 24px; bottom: 6px; }
    .nav-links a.btn-login-header { margin: var(--spacing-16) 0 0; text-align: center; font-size: 16px; }
}