/* =============================================
   HEADER — IronBlock
   ============================================= */

   header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    height: 70px;
    display: flex;
    align-items: center;
    /* Estado inicial: transparente */
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border-bottom: 1px solid transparent;
    transition: background 0.3s ease, backdrop-filter 0.3s ease, border-color 0.3s ease;
}

/* Fondo glass cuando se hace scroll */
header.scrolled {
    background: rgba(26, 26, 26, 0.75);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* ── Logo ─────────────────────────────────── */
.logo { display: flex; align-items: center; }

.logo-img {
    height: 42px;
    display: block;
    transition: transform 0.3s ease, opacity 0.3s ease;
}
.logo-img:hover {
    transform: scale(1.04);
    opacity: 0.9;
}

/* ── Nav desktop ─────────────────────────── */
.nav-menu ul {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-menu li {
    display: flex;
    align-items: center;
}

.nav-menu a {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    color: var(--light);
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.3px;
    line-height: 1.5;
    padding: 8px 16px;
    border: 2px solid transparent;
    border-radius: 5px;
    transition: all 0.25s ease;
    position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary);
    border-color: var(--primary);
    background: rgba(255, 193, 7, 0.1);
}

/* ── Botón Cotizar ───────────────────────── */
.btn-cotizar {
    background: transparent;
    color: var(--primary) !important;   /* ← CORREGIDO: texto oscuro sobre fondo amarillo */
    padding: 9px 22px !important;
    border-radius: 6px;
    font-weight: 700;
    transition: background 0.25s, transform 0.25s, box-shadow 0.25s;
    border: 2px solid var(--primary);
    letter-spacing: 0.3px;
}
.btn-cotizar:hover {
    background: transparent;
    color: var(--primary) !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(255, 193, 7, 0.25);
}

/* Elementos exclusivos del overlay móvil: ocultos en desktop (no afectan el nav). */
.nav-mobile-top,
.nav-mobile-cta { display: none; }

/* ── Hamburger ────────────────────────────── */
.mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    cursor: pointer;
    z-index: 1002;
    width: 40px;
    height: 40px;
    padding: 0;
    background: none;
    border: none;
    border-radius: 6px;
    -webkit-appearance: none;
    appearance: none;
    outline: none;
    flex-shrink: 0;
    transition: background 0.2s;
}
.mobile-toggle:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}
.mobile-toggle:hover {
    background: rgba(255, 255, 255, 0.07);
}

.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2.5px;
    background: var(--light);
    border-radius: 3px;
    transition: transform 0.35s cubic-bezier(0.23, 1, 0.32, 1),
                opacity   0.25s ease,
                width     0.3s ease;
    transform-origin: center;
}

.mobile-toggle.active span:nth-child(1) {
    transform: translateY(7.5px) rotate(45deg);
}
.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
    width: 0;
}
.mobile-toggle.active span:nth-child(3) {
    transform: translateY(-7.5px) rotate(-45deg);
}

/* ── Menú móvil: overlay full-screen (logo + links + CTA) ── */
@media (max-width: 768px) {

    .mobile-toggle { display: flex; }
    /* Al abrir, el overlay tiene su propia X → ocultamos el hamburger */
    .mobile-toggle.active { display: none; }

    .nav-menu {
        position: fixed;
        inset: 0;
        width: 100%;
        height: 100dvh;

        /* Fondo oscuro glass */
        background: rgba(18, 18, 18, 0.97);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);

        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        overflow-y: auto;

        transform: translateY(-12px);
        opacity: 0;
        pointer-events: none;
        transition: transform 0.35s cubic-bezier(0.23, 1, 0.32, 1),
                    opacity   0.3s ease;
        z-index: 1001; /* por encima del header */
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    /* Barra superior: logo + cerrar */
    .nav-mobile-top {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        height: 70px;
        flex-shrink: 0;
        padding: 0 5%;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .nav-mobile-logo { height: 38px; display: block; width: auto; }
    .nav-close {
        width: 44px;
        height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: none;
        border: none;
        cursor: pointer;
        color: var(--light);
        font-size: 2rem;
        line-height: 1;
        border-radius: 8px;
        transition: color 0.2s ease, background 0.2s ease;
    }
    .nav-close:hover,
    .nav-close:focus-visible {
        color: var(--primary);
        background: rgba(255, 255, 255, 0.06);
        outline: none;
    }

    /* Links centrados en el espacio disponible (tipografía prolija, sin botones) */
    .nav-menu ul {
        flex: 1;
        min-height: 0;
        flex-direction: column;
        justify-content: center;
        align-items: stretch;
        gap: 0.3rem;
        width: 100%;
        max-width: 440px;
        margin: 0 auto;
        padding: 1.5rem 8%;
    }

    .nav-menu li {
        width: 100%;
        opacity: 0;
        transform: translateY(10px);
        transition: opacity 0.4s ease, transform 0.4s ease;
    }
    /* Animación escalonada */
    .nav-menu.active li:nth-child(1) { opacity: 1; transform: none; transition-delay: 0.06s; }
    .nav-menu.active li:nth-child(2) { opacity: 1; transform: none; transition-delay: 0.12s; }
    .nav-menu.active li:nth-child(3) { opacity: 1; transform: none; transition-delay: 0.18s; }
    .nav-menu.active li:nth-child(4) { opacity: 1; transform: none; transition-delay: 0.24s; }

    .nav-menu a {
        display: block;
        width: 100%;
        text-align: center;
        font-size: 1.25rem;
        font-weight: 600;
        letter-spacing: 0.3px;
        text-transform: none;
        color: #f0f0f0;
        background: none;
        border: none;
        border-radius: 10px;
        box-shadow: none;
        padding: 0.95rem 1rem;
        min-height: 48px;
        transition: color 0.2s ease, background 0.2s ease;
    }
    .nav-menu a:hover,
    .nav-menu a.active {
        color: var(--primary);
        background: rgba(255, 255, 255, 0.05);
        transform: none;
        box-shadow: none;
        border: none;
    }

    /* CTA al pie: Cotizar (principal) + WhatsApp */
    .nav-mobile-cta {
        display: flex;
        flex-direction: column;
        gap: 0.7rem;
        width: 100%;
        max-width: 440px;
        margin: 0 auto;
        padding: 1.1rem 8% calc(1.4rem + env(safe-area-inset-bottom));
        flex-shrink: 0;
        border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .nav-cta-cotizar {
        display: flex;
        align-items: center;
        justify-content: center;
        min-height: 52px;
        background: var(--primary);
        color: #000;
        font-weight: 800;
        font-size: 1.05rem;
        text-transform: uppercase;
        letter-spacing: 0.5px;
        text-decoration: none;
        border-radius: 10px;
        transition: background 0.2s ease, transform 0.15s ease;
    }
    .nav-cta-cotizar:hover { background: #e0a800; }
    .nav-cta-cotizar:active { transform: translateY(1px); }

    .nav-cta-wa {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 0.5rem;
        min-height: 50px;
        background: transparent;
        color: #25D366;
        border: 2px solid #25D366;
        border-radius: 10px;
        font-weight: 700;
        font-size: 1rem;
        text-decoration: none;
        transition: background 0.2s ease, color 0.2s ease;
    }
    .nav-cta-wa i { font-size: 1.2rem; }
    .nav-cta-wa:hover,
    .nav-cta-wa:active { background: #25D366; color: #fff; }
}

/* ── Tablet intermedio ───────────────────── */
@media (max-width: 900px) and (min-width: 769px) {
    .nav-menu ul { gap: 0.5rem; }
    .nav-menu a  { font-size: 0.88rem; padding: 8px 12px; }
}