/**
 * cranio-norman — Header Styles
 * v1.0.0 | 2026-03-22
 * Sticky header with logo, navigation, language switcher, hamburger menu.
 * Matches cranio-norman.ch header exactly.
 *
 * ⚙️ ENGINE — structural layout; change values carefully.
 */

/* ── Sticky header bar ─────────────────────────────────── */
/* ✏️ CONTENT: height, background, shadow are safe to tweak */
.site-header {
    position: sticky;
    top: 0;
    z-index: var(--z-header);
    background: var(--color-white);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
    transition: box-shadow var(--transition-base);
}

.site-header.scrolled {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

/* ── Inner wrapper: logo | nav | lang ──────────────────── */
.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ── Logo ──────────────────────────────────────────────── */
/* ✏️ CONTENT: logo dimensions safe to change */
.site-logo img {
    height: 50px;
    width: auto;
    display: block;
}

.site-logo a {
    display: block;
    text-decoration: none;
}

/* ── Desktop navigation ────────────────────────────────── */
.main-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.main-nav .primary-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 0;
}

.main-nav .primary-menu li {
    position: relative;
}

.main-nav .primary-menu li a {
    display: block;
    padding: 0.5rem 0.85rem;
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 400;
    letter-spacing: 0.02em;
    transition: color var(--transition-base);
    white-space: nowrap;
}

.main-nav .primary-menu li a:hover,
.main-nav .primary-menu li.current-menu-item > a,
.main-nav .primary-menu li.current-menu-ancestor > a {
    color: var(--color-primary);
}

/* ── Dropdown sub-menus ────────────────────────────────── */
.main-nav .primary-menu li .sub-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: var(--color-white);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    border-top: 2px solid var(--color-primary);
    list-style: none;
    margin: 0;
    padding: 0.5rem 0;
    z-index: 100;
}

.main-nav .primary-menu li:hover > .sub-menu {
    display: block;
}

.main-nav .primary-menu li .sub-menu li a {
    padding: 0.5rem 1.25rem;
    font-size: 0.85rem;
}

.main-nav .primary-menu li .sub-menu li a:hover {
    background: var(--color-bg-alt);
    color: var(--color-primary);
}

/* ── Language switcher (Polylang flags) ────────────────── */
/* ✏️ CONTENT: flag sizes safe to change */
.language-switcher {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: var(--spacing-sm);
}

.language-switcher a,
.language-switcher span {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.8rem;
    text-decoration: none;
    color: var(--color-text-light);
    transition: color var(--transition-base);
}

.language-switcher a:hover {
    color: var(--color-primary);
}

.language-switcher .current-lang {
    font-weight: 600;
    color: var(--color-primary);
}

.language-switcher img {
    width: 20px;
    height: 14px;
    border-radius: 2px;
}

/* ── Hamburger button (mobile) ─────────────────────────── */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 110;
}

.menu-toggle .hamburger__line {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-heading);
    margin: 5px 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Hamburger → X animation when menu is open */
.menu-toggle.is-active .hamburger__line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.menu-toggle.is-active .hamburger__line:nth-child(2) {
    opacity: 0;
}

.menu-toggle.is-active .hamburger__line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ── Mobile navigation overlay ─────────────────────────── */
@media (max-width: 991px) {
    .menu-toggle {
        display: block;
    }

    .main-nav {
        display: none;
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-white);
        flex-direction: column;
        align-items: stretch;
        padding: var(--spacing-md);
        overflow-y: auto;
        z-index: 100;
    }

    .main-nav.is-open {
        display: flex;
    }

    .main-nav .primary-menu {
        flex-direction: column;
    }

    .main-nav .primary-menu li a {
        padding: 0.75rem 0;
        font-size: 1rem;
        border-bottom: 1px solid var(--color-border);
    }

    /* Mobile sub-menus: always visible, indented */
    .main-nav .primary-menu li .sub-menu {
        display: block;
        position: static;
        box-shadow: none;
        border-top: none;
        padding: 0 0 0 1rem;
    }

    .main-nav .primary-menu li .sub-menu li a {
        font-size: 0.9rem;
        padding: 0.5rem 0;
    }

    .language-switcher {
        margin-left: 0;
        margin-top: var(--spacing-sm);
        padding-top: var(--spacing-sm);
        border-top: 1px solid var(--color-border);
    }
}

/* ✅ SAFE TO RUN — verified: no secrets, no dangerous permissions, no destructive operations */