/* =========================
   CABECERA GLOBAL
   - Desktop: logo + menú horizontal.
   - Móvil: logo grande + botón hamburguesa.
   - Al hacer scroll: header compacto y logo pequeño.
========================= */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 9999;

    display: flex;
    justify-content: space-between;
    align-items: center;

    padding: 26px 8%;
    min-height: 138px;

    background: linear-gradient(180deg, rgba(2, 6, 17, 0.34), rgba(2, 6, 17, 0));
    border-bottom: 1px solid rgba(255, 255, 255, 0.025);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);

    transition:
        min-height 0.35s ease,
        padding 0.35s ease,
        background 0.35s ease,
        backdrop-filter 0.35s ease,
        border-color 0.35s ease;
}

.site-header.scrolled,
.site-header.menu-open {
    min-height: 72px;
    padding: 8px 8%;
    background: rgba(2, 6, 17, 0.72);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.075);
}

.header-logo {
    position: relative;
    z-index: 10001;
}

.header-logo a {
    display: inline-flex;
    align-items: center;
}

.header-logo img {
    display: block;
    width: auto;
    height: 72px;
    max-width: 340px;
    object-fit: contain;
    transition:
        height 0.35s ease,
        max-width 0.35s ease,
        filter 0.28s ease,
        transform 0.35s ease;
}

.site-header.scrolled .header-logo img,
.site-header.menu-open .header-logo img {
    height: 48px;
    max-width: 250px;
}

.header-logo img:hover {
    filter: brightness(1.08);
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 34px;
}

.main-nav a {
    color: #ffffff;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    opacity: 0.82;
    transition: opacity 0.25s ease, color 0.25s ease;
}

.main-nav a:hover {
    opacity: 1;
    color: #00aeff;
}

/* Botón hamburguesa oculto en escritorio */
.menu-toggle {
    display: none;
}

/* =========================
   MÓVIL
========================= */
@media (max-width: 800px) {
    .site-header {
        min-height: 104px;
        padding: 14px 22px;
        background: linear-gradient(180deg, rgba(2, 6, 17, 0.82), rgba(2, 6, 17, 0.34));
    }

    .site-header.scrolled,
    .site-header.menu-open {
        min-height: 66px;
        padding: 8px 18px;
        background: rgba(2, 6, 17, 0.86);
    }

    .header-logo img {
        height: 56px;
        max-width: 240px;
    }

    .site-header.scrolled .header-logo img,
    .site-header.menu-open .header-logo img {
        height: 42px;
        max-width: 190px;
    }

    .menu-toggle {
        position: relative;
        z-index: 10001;

        width: 46px;
        height: 46px;
        padding: 0;

        display: inline-flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 6px;

        border: 1px solid rgba(255, 255, 255, 0.14);
        border-radius: 14px;
        background: rgba(255, 255, 255, 0.055);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        cursor: pointer;
    }

    .menu-toggle span {
        width: 22px;
        height: 2px;
        display: block;
        border-radius: 999px;
        background: #ffffff;
        transition:
            transform 0.25s ease,
            opacity 0.25s ease,
            background 0.25s ease;
    }

    .site-header.menu-open .menu-toggle span {
        background: #00aeff;
    }

    .site-header.menu-open .menu-toggle span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .site-header.menu-open .menu-toggle span:nth-child(2) {
        opacity: 0;
    }

    .site-header.menu-open .menu-toggle span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .main-nav {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;

        padding: 96px 22px 26px;

        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 10px;

        background:
            radial-gradient(circle at top right, rgba(0, 174, 255, 0.18), transparent 34%),
            rgba(2, 6, 17, 0.96);
        border-bottom: 1px solid rgba(0, 174, 255, 0.16);
        box-shadow: 0 28px 80px rgba(0, 0, 0, 0.38);
        backdrop-filter: blur(18px);
        -webkit-backdrop-filter: blur(18px);

        transform: translateY(-110%);
        opacity: 0;
        pointer-events: none;

        transition:
            transform 0.28s ease,
            opacity 0.28s ease;
    }

    .site-header.menu-open .main-nav {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .main-nav a {
        width: 100%;
        padding: 15px 16px;

        font-size: 17px;
        letter-spacing: 1.4px;
        font-weight: 600;

        border: 1px solid rgba(255, 255, 255, 0.08);
        border-radius: 16px;
        background: rgba(255, 255, 255, 0.045);
        opacity: 1;
    }

    .main-nav a:hover {
        color: #ffffff;
        border-color: rgba(150, 203, 76, 0.55);
        background: rgba(150, 203, 76, 0.10);
    }
}

/* Móvil pequeño */
@media (max-width: 420px) {
    .header-logo img {
        height: 50px;
        max-width: 200px;
    }

    .site-header.scrolled .header-logo img,
    .site-header.menu-open .header-logo img {
        height: 40px;
        max-width: 170px;
    }

    .site-header {
        padding-left: 16px;
        padding-right: 16px;
    }
}