.desktop-only { display: block; }
.mobile-only  { display: none; }

@media (max-width: 1024px) {
    .desktop-only   { display: none; }
    .mobile-only    { display: block; }
    li.mobile-only  { display: list-item; }
}

header.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background-color: var(--header-bg, var(--bg-color));
    overflow: visible;
    margin: 0;
    transition: transform 0.3s ease, background-color 0.3s ease;
}

.header-ticker-bar {
    height: var(--s-10);
    overflow: hidden;
    border-bottom: 1px solid var(--header-border, rgba(0, 0, 0, 0.06));
    font-size: var(--fs-sm);
    background-color: var(--header-ticker-bg, #f2f2f2);
    transition: height 0.3s ease, opacity 0.3s ease;
}

.is-sticky .header-ticker-bar {
    height: 0;
    opacity: 0;
    pointer-events: none;
}

@media (max-width: 1024px) {
    .header-ticker-bar { display: none; }
}

.ticker-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.ticker-left {
    display: flex;
    align-items: center;
    gap: var(--s-2);
    flex-grow: 1;
    min-width: 0;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.ticker-label {
    flex-shrink: 0;
    font-size: var(--fs-xs);
    font-weight: 800;
    text-transform: uppercase;
    color: var(--header-text-muted, #888);
}

.ticker-title {
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: var(--fs-sm);
    font-weight: 800;
    text-transform: uppercase;
    text-decoration: none;
    color: var(--header-accent, var(--primary-color));
}

.ticker-right.desktop-only {
    flex-shrink: 0;
    margin-left: var(--gap);
}

.header-main-bar {
    padding: var(--s-4) 0;
    background-color: var(--header-bg, var(--bg-color));
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: var(--s-3);
    text-decoration: none;
}

.logo-img {
    width: 54px;
    height: 54px;
    object-fit: contain;
    display: block;
    flex-shrink: 0;
}

.site-title {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    margin: 0;
    line-height: 1;
    text-transform: uppercase;
    color: var(--text-color);
}

.site-title-revista {
    font-family: var(--font-headings);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.18em;
    color: var(--header-text-muted, #888);
}

.site-title-seriez {
    font-family: var(--font-headings);
    font-size: var(--fs-2xl);
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--header-accent, var(--primary-color));
    line-height: 1.05;
}

@media (max-width: 1024px) {
    .logo-img { width: 44px; height: 44px; }
    .site-title-revista { font-size: 11px; }
    .site-title-seriez { font-size: var(--fs-xl); }
}

header.site-header .social-network-list {
    display: flex;
    align-items: center;
    gap: var(--s-4);
    list-style: none;
    margin: 0;
    padding: 0;
}

header.site-header .social-network-list li a {
    text-decoration: none;
    font-size: var(--fs-sm);
    font-weight: 800;
    text-transform: uppercase;
    color: var(--header-text-muted, var(--secondary-color));
    transition: var(--transition);
}

header.site-header .social-network-list li a:hover {
    color: var(--header-accent, var(--primary-color));
}

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

.nav-collapse #primary-menu {
    display: flex;
    align-items: center;
    gap: var(--gap);
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-collapse #primary-menu li a {
    position: relative;
    padding: var(--s-2) 0;
    text-decoration: none;
    font-size: var(--fs-md);
    font-weight: 800;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--header-text, var(--text-color));
    transition: var(--transition);
}

.nav-collapse #primary-menu li a:hover {
    color: var(--header-accent, var(--primary-color));
}

.mobile-social-section {
    display: none;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    padding: var(--s-2);
    margin-left: var(--gap);
    cursor: pointer;
    outline: none;
    position: relative;
    z-index: 20;
    transition: var(--transition);
}

.hamburger-box {
    display: block;
    position: relative;
    width: 28px;
    height: 18px;
}

.hamburger-inner,
.hamburger-inner::before,
.hamburger-inner::after {
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--header-text, var(--text-color));
    transition: transform 0.2s cubic-bezier(0.8, 0, 0.2, 1), top 0.2s ease, opacity 0.1s ease;
}

.hamburger-inner          { top: 50%; transform: translateY(-50%); }
.hamburger-inner::before  { content: ""; top: -8px; }
.hamburger-inner::after   { content: ""; top: 8px; }

.menu-toggle.toggled .hamburger-inner          { background-color: transparent; }
.menu-toggle.toggled .hamburger-inner::before  { transform: rotate(45deg);  top: 0; }
.menu-toggle.toggled .hamburger-inner::after   { transform: rotate(-45deg); top: 0; }

@media (max-width: 1024px) {
    .menu-toggle {
        display: block;
        margin-left: 0;
    }
}

@media (max-width: 1024px) {
    .main-navigation {
        flex-shrink: 0;
        margin: 0;
        padding: 0;
    }

    .nav-collapse {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        z-index: 10;
        flex-direction: column;
        background: var(--header-bg, var(--bg-color));
        border-top: 3px solid var(--header-accent, var(--primary-color));
        max-height: 0;
        overflow: hidden;
        opacity: 0;
        box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
        transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.25s ease;
    }

    .menu-toggle.toggled + .nav-collapse {
        max-height: 90vh;
        opacity: 1;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        overscroll-behavior: contain;
    }

    .nav-collapse #primary-menu {
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        width: 100%;
        padding: var(--s-4) var(--gap) 0;
    }

    .nav-collapse #primary-menu li {
        position: relative;
        width: 100%;
        border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    }

    .nav-collapse #primary-menu li:last-child {
        border-bottom: none;
    }

    .nav-collapse #primary-menu li::before {
        content: "";
        position: absolute;
        left: calc(-1 * var(--gap));
        top: 0;
        bottom: 0;
        width: 3px;
        background-color: var(--primary-color);
        transform: scaleY(0);
        transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .nav-collapse #primary-menu li:hover::before {
        transform: scaleY(1);
    }

    .nav-collapse #primary-menu li a {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: var(--s-3) 0;
        font-size: var(--fs-2xl);
        font-weight: 900;
        letter-spacing: -0.02em;
        text-transform: uppercase;
        color: var(--header-text, var(--text-color));
        transition: color 0.2s ease;
    }

    .nav-collapse #primary-menu li a::after {
        content: "→";
        font-size: var(--fs-md);
        font-weight: 400;
        color: var(--header-accent, var(--primary-color));
        opacity: 0;
        transform: translateX(-6px);
        transition: opacity 0.2s ease, transform 0.2s ease;
    }

    .nav-collapse #primary-menu li a:hover {
        color: var(--header-accent, var(--primary-color));
    }

    .nav-collapse #primary-menu li a:hover::after {
        opacity: 1;
        transform: translateX(0);
    }

    .mobile-social-section {
        display: block;
        margin: 0 var(--gap);
        padding: var(--s-4) 0 var(--s-5);
        border-top: 1px solid rgba(0, 0, 0, 0.08);
    }

    .mobile-social-label {
        margin: 0 0 var(--s-3);
        font-size: var(--fs-xs);
        font-weight: 800;
        letter-spacing: 0.1em;
        text-transform: uppercase;
        color: #999;
    }

    .mobile-social-list {
        display: flex;
        flex-wrap: wrap;
        gap: var(--s-2);
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .mobile-social-list li a {
        display: inline-block;
        padding: var(--s-2) var(--s-4);
        border: 1.5px solid rgba(0, 0, 0, 0.14);
        border-radius: 100px;
        font-size: var(--fs-xs);
        font-weight: 800;
        letter-spacing: 0.06em;
        text-transform: uppercase;
        text-decoration: none;
        color: var(--secondary-color);
        transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
    }

    .mobile-social-list li a:visited {
        background-color: transparent;
        border-color: rgba(0, 0, 0, 0.14);
        color: var(--secondary-color);
    }

    .mobile-social-list li a:hover,
    .mobile-social-list li a:focus-visible {
        background-color: var(--primary-color);
        border-color: var(--primary-color);
        color: #fff;
        outline: none;
    }

    .mobile-social-list li a:active {
        background-color: color-mix(in srgb, var(--primary-color) 80%, #000);
        border-color: color-mix(in srgb, var(--primary-color) 80%, #000);
        color: #fff;
    }
}

.reading-progress-container {
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: rgba(0, 0, 0, 0.03);
}

.reading-progress-fill {
    width: 0%;
    height: 100%;
    background-color: var(--primary-color);
    transition: width 0.1s ease-out;
}


body.menu-open {
    position: fixed;
    width: 100%;
    overflow-y: scroll; 
}