/* ============================================================
   KRAXELBANDE – Header & Navigation (shared across all pages)
   ============================================================ */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--header-height);
    background: var(--color-text);
    box-shadow: 0 4px 20px rgba(51, 54, 95, 0.4);
    border-bottom: 1px solid transparent;
    transition: height var(--duration-normal) var(--ease-out),
        background var(--duration-normal) var(--ease-out),
        border-color var(--duration-normal) var(--ease-out),
        box-shadow var(--duration-normal) var(--ease-out);
}

.site-header.scrolled {
    height: var(--header-height-scrolled);
    background: rgba(51, 54, 95, 0.98);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

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

.header-logo img {
    height: 54px;
    width: auto;
    filter: brightness(0) invert(1);
    transition: height var(--duration-normal) var(--ease-out);
}

.site-header.scrolled .header-logo img {
    height: 44px;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.nav-link {
    display: inline-flex;
    align-items: center;
    padding: 0.5em 1.1em;
    font-size: var(--fs-base);
    font-weight: 600;
    color: #ffffff;
    border-radius: var(--radius-full);
    transition: all var(--duration-fast) var(--ease-out);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-accent-1);
}

.nav-link--cta {
    background: var(--color-accent-1);
    color: var(--color-text) !important;
    font-weight: 600;
}

.nav-link--cta:hover {
    background: var(--color-accent-1-dark);
    box-shadow: 0 4px 16px rgba(164, 189, 30, 0.25);
    transform: translateY(-1px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    transition: background var(--duration-fast) ease;
    z-index: 1001;
}

.nav-toggle:hover {
    background: var(--color-bg-soft);
}

.nav-toggle-bar {
    display: block;
    width: 25px;
    height: 3px;
    margin-inline: auto;
    background: #ffffff;
    border-radius: 3px;
    transition: all var(--duration-normal) var(--ease-out);
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(51, 54, 95, 0.4);
    backdrop-filter: blur(4px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-normal) var(--ease-out);
    z-index: 999;
}

.nav-overlay.is-active {
    opacity: 1;
    pointer-events: all;
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .header-nav {
        position: fixed;
        top: 0;
        right: 0;
        width: min(320px, 85vw);
        height: 100dvh;
        background: var(--color-text);
        padding: calc(var(--header-height) + var(--space-xl)) var(--space-xl) var(--space-xl);
        transform: translateX(100%);
        transition: transform var(--duration-normal) var(--ease-out);
        box-shadow: var(--shadow-xl);
        z-index: 1000;
    }

    .header-nav.is-open {
        transform: translateX(0);
    }

    .nav-list {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-xs);
    }

    .nav-link {
        padding: 0.9em 1.2em;
        font-size: var(--fs-base);
        border-radius: var(--radius-md);
    }

    .nav-link--cta {
        text-align: center;
        justify-content: center;
        margin-top: var(--space-md);
    }
}

@media (max-width: 992px) {
    .site-header {
        background: var(--color-text) !important;
        box-shadow: 0 4px 20px rgba(51, 54, 95, 0.4) !important;
    }

    .header-logo img {
        filter: brightness(0) invert(1) !important;
    }
}