/* ==========================================================================
   Navbar Component
   ========================================================================== */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: 1000;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    transition: box-shadow var(--transition-base), top var(--transition-base);
}

/* Offset header when WP admin bar is visible */
.admin-bar .site-header {
    top: 32px;
}

@media (max-width: 782px) {
    .admin-bar .site-header {
        top: 46px;
    }
}

.site-header--scrolled {
    box-shadow: var(--shadow-md);
}

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

/* ---- Logo ---- */
.navbar__brand {
    flex-shrink: 0;
}

.navbar__logo {
    height: 52px;
    width: auto;
    display: block;
}

/* ---- Desktop Navigation ---- */
.navbar__nav {
    display: none;
}

.navbar__menu {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    list-style: none;
    margin: 0;
    padding: 0;
}

.navbar__menu > li {
    position: relative;
}

.navbar__menu > li > a {
    font-family: var(--font-heading);
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    color: var(--color-text-dark);
    text-decoration: none;
    padding: var(--space-sm) 0;
    transition: color var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.navbar__menu > li > a:hover,
.navbar__menu > li > a:focus,
.navbar__menu > li.current-menu-item > a,
.navbar__menu > li.current-menu-parent > a,
.navbar__menu > li.current_page_item > a {
    color: var(--color-sage);
}

/* Dropdown icon */
.navbar__menu .dropdown-icon,
.navbar__menu .nav-dropdown-icon {
    width: 12px;
    height: 12px;
    transition: transform var(--transition-fast);
}

.navbar__menu > li:hover .dropdown-icon,
.navbar__menu > li:hover .nav-dropdown-icon,
.navbar__menu > li:focus-within .dropdown-icon,
.navbar__menu > li:focus-within .nav-dropdown-icon {
    transform: rotate(180deg);
}

/* ---- Sub‑menu / Dropdown ---- */
.navbar__menu .sub-menu {
    position: absolute;
    top: 100%;
    left: calc(-1 * var(--space-md));
    min-width: 200px;
    list-style: none;
    margin: 0;
    padding: var(--space-sm) 0;
    background-color: var(--color-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity var(--transition-fast),
                visibility var(--transition-fast),
                transform var(--transition-fast);
}

.navbar__menu > li:hover > .sub-menu,
.navbar__menu > li:focus-within > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.navbar__menu .sub-menu li a {
    display: block;
    padding: var(--space-sm) var(--space-md);
    font-size: var(--fs-sm);
    color: var(--color-text-dark);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.navbar__menu .sub-menu li a:hover,
.navbar__menu .sub-menu li a:focus {
    background-color: var(--color-background-warm);
    color: var(--color-sage);
}

/* ==========================================================================
   Mega Dropdown — Conditions (grouped by category, 3-column desktop layout)
   --------------------------------------------------------------------------
   The Conditions dropdown groups posts by taxonomy (Spine Related, Extremities,
   Other Symptoms). All desktop styling is scoped to (min-width: 1024px) so it
   NEVER competes with the mobile drawer rules below — this prevents the
   :hover translate-X(-50%) from shifting the menu off-screen on touch devices.
   ========================================================================== */
@media (min-width: 1024px) {
    .navbar__menu .sub-menu--conditions.mega-dropdown {
        /* Wider container + reset inner padding so the grid sits flush */
        min-width: 640px;
        padding: var(--space-lg);
        /* Center under the parent link (override default left offset) */
        left: 50%;
        transform: translate(-50%, 8px);
        /* CSS Grid: 3 columns, one per taxonomy category */
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: var(--space-lg);
    }

    /* Reset transform on hover so translateY animation still works with translateX */
    .navbar__menu > li:hover > .sub-menu--conditions.mega-dropdown,
    .navbar__menu > li:focus-within > .sub-menu--conditions.mega-dropdown {
        transform: translate(-50%, 0);
    }

    /* Each category column */
    .mega-dropdown__group {
        display: flex;
        flex-direction: column;
        gap: var(--space-xs);
        list-style: none;
    }

    /* Category title — styled as a link, uppercase label, sage accent on hover */
    .mega-dropdown__title {
        display: block;
        font-family: var(--font-heading);
        font-size: var(--fs-sm);
        font-weight: var(--fw-medium);
        text-transform: uppercase;
        letter-spacing: 0.06em;
        color: var(--color-sage);
        padding: 0 var(--space-md) var(--space-xs);
        border-bottom: 1px solid var(--color-border);
        margin-bottom: var(--space-xs);
        transition: color var(--transition-fast);
    }

    .mega-dropdown__title:hover,
    .mega-dropdown__title:focus {
        color: var(--color-text-dark);
    }

    /* Inner posts list — reset list defaults; links inherit base sub-menu styling */
    .mega-dropdown__list {
        list-style: none;
        margin: 0;
        padding: 0;
        display: flex;
        flex-direction: column;
    }

    .mega-dropdown__list li {
        margin: 0;
    }
}

/* ---- CTA spacing: separate Book Now from nav links ---- */
.navbar__cta {
    margin-left: var(--space-xl);
}

/* ---- Mobile Toggle (hamburger) ---- */
.navbar__toggle {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 0;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-dark);
    z-index: 1001;
}

/* Hamburger bars with animation */
.navbar__toggle-bar {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text-dark);
    border-radius: 2px;
    transition: transform var(--transition-base), opacity var(--transition-base);
}

/* Active state: morph into X */
.navbar__toggle[aria-expanded="true"] .navbar__toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.navbar__toggle[aria-expanded="true"] .navbar__toggle-bar:nth-child(2) {
    opacity: 0;
}

.navbar__toggle[aria-expanded="true"] .navbar__toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ---- Mobile Navigation (reuse .navbar__nav as a slide‑in drawer) ---- */
@media (max-width: 1023px) {
    .navbar__nav {
        position: fixed;
        top: var(--header-height);
        right: 0;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background-color: var(--color-white);
        padding: var(--space-lg) var(--space-md);
        overflow-y: auto;
        transform: translateX(100%);
        transition: transform var(--transition-base);
        z-index: 999;
        flex-direction: column;
        align-items: stretch;
    }

    /* Account for WP admin bar in mobile drawer position */
    .admin-bar .navbar__nav {
        top: calc(var(--header-height) + 32px);
        height: calc(100vh - var(--header-height) - 32px);
    }

    @media (max-width: 782px) {
        .admin-bar .navbar__nav {
            top: calc(var(--header-height) + 46px);
            height: calc(100vh - var(--header-height) - 46px);
        }
    }

    /* Open state — triggered by JS toggling is-open class */
    .navbar__nav.is-open {
        display: flex;
        transform: translateX(0);
    }

    /* Stack menu items vertically on mobile */
    .navbar__menu {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }

    .navbar__menu > li {
        border-bottom: 1px solid var(--color-border);
    }

    .navbar__menu > li > a {
        padding: var(--space-md) 0;
        font-size: var(--fs-md);
    }

    /* Mobile sub-menu: hidden by default, toggled via JS */
    .navbar__menu .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border-radius: 0;
        padding: 0;
        padding-left: var(--space-lg);
        display: none;
        background-color: transparent;
    }

    .navbar__menu .sub-menu.is-open {
        display: block;
    }

    .navbar__menu .sub-menu li a {
        font-size: var(--fs-base);
        padding: var(--space-sm) 0;
    }

    /* ----------------------------------------------------------------
       Mega-dropdown on mobile/tablet drawer
       The desktop grid/translate styles are scoped to min-width:1024px,
       so here we only need to ensure proper accordion behavior + spacing
       and style the category titles as section headers within the stack.
       ---------------------------------------------------------------- */
    .navbar__menu .sub-menu--conditions.mega-dropdown {
        /* Inherit the base mobile sub-menu reset (static, hidden by default) */
        display: none;
        gap: var(--space-md);
        padding: var(--space-sm) 0 var(--space-sm) var(--space-lg);
    }

    .navbar__menu .sub-menu--conditions.mega-dropdown.is-open {
        display: flex;
        flex-direction: column;
    }

    /* Category title acts as a section divider in the stacked drawer view */
    .mega-dropdown__group {
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .mega-dropdown__title {
        display: block;
        font-family: var(--font-heading);
        font-size: var(--fs-sm);
        font-weight: var(--fw-medium);
        text-transform: uppercase;
        letter-spacing: 0.06em;
        color: var(--color-sage);
        padding: var(--space-xs) 0;
        margin-bottom: var(--space-xs);
        border-bottom: 1px solid var(--color-border);
    }

    .mega-dropdown__list {
        list-style: none;
        margin: 0;
        padding: 0 0 0 var(--space-sm);
        display: flex;
        flex-direction: column;
    }

    .mega-dropdown__list li a {
        padding: var(--space-xs) 0;
        font-size: var(--fs-sm);
    }

    /* CTA at bottom of mobile menu */
    .navbar__cta {
        margin-left: 0;
        margin-top: var(--space-lg);
    }

    .navbar__cta .btn {
        width: 100%;
        text-align: center;
    }
}

/* ---- Body Lock ---- */
body.menu-open {
    overflow: hidden;
}

/* ==========================================================================
   Desktop Breakpoint
   ========================================================================== */
@media (min-width: 1024px) {
    .navbar__nav {
        display: flex;
        align-items: center;
    }

    .navbar__toggle {
        display: none;
    }
}