/**
 * Dandysite Victoria — Header Styles
 * 
 * Uses CSS custom properties for all color/visual values so that
 * ds-theme-customizations (or any child theme) can override via :root.
 *
 * Header neutral defaults (project overrides these via CSS variables):
 *   Solid header:    dark background, light text
 *   Overlay header:  transparent → light text + light logo
 *   Revealed state:  configurable via body class (header-reveal-solid / header-reveal-transparent)
 */

/* ================================================================
   CSS CUSTOM PROPERTIES — Header Defaults
   Override these in your project's stylesheet.
   ================================================================ */
:root {
    /* Solid header */
    --header-solid-bg:          #1a1a1a;
    --header-solid-color:       #ffffff;
    --header-solid-border:      transparent;
    --header-solid-shadow:      0 2px 8px rgba(0, 0, 0, 0.15);

    /* Overlay header — initial transparent state */
    --header-overlay-bg:        transparent;
    --header-overlay-color:     #ffffff;

    /* Revealed state — solid */
    --header-revealed-solid-bg:     #1a1a1a;
    --header-revealed-solid-color:  #ffffff;
    --header-revealed-solid-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);

    /* Revealed state — transparent/glassy */
    --header-revealed-glass-bg:     rgba(0, 0, 0, 0.55);
    --header-revealed-glass-blur:   12px;
    --header-revealed-glass-color:  #ffffff;

    /* Common */
    --header-height:            70px;
    --header-height-mobile:     60px;
    --header-padding-v:         0;
    --header-padding-h:         2rem;
    --header-z-index:           1000;
    --header-transition:        transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
                                background-color 0.3s ease,
                                box-shadow 0.3s ease,
                                color 0.3s ease;

    /* Logo */
    --header-logo-height:       44px;
    --header-logo-height-mobile: 36px;

    /* Nav links */
    --header-nav-gap:           2rem;
    --header-nav-font-size:     0.95rem;
    --header-nav-font-weight:   500;
    --header-nav-letter-spacing: 0.02em;

    /* Mobile menu */
    --header-mobile-menu-bg:    #1a1a1a;
    --header-mobile-menu-color: #ffffff;
    --header-mobile-menu-shadow: -4px 0 20px rgba(0, 0, 0, 0.3);
}


/* ================================================================
   BASE HEADER STRUCTURE
   ================================================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--header-z-index);
    height: var(--header-height);
    transition: var(--header-transition);
    will-change: transform, background-color;
}

/* Inner container — flex row */
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    gap: 1em;
    padding: var(--header-padding-v) var(--header-padding-h);
    max-width: var(--container-max-width, 1400px);
    margin: 0 auto;
}

/* Right side group: nav + search icon + hamburger inline */
.header-right {
    display: flex;
    align-items: center;
    flex-wrap: nowrap;
    gap: var(--header-nav-gap, 2rem);
    flex-shrink: 0;
}

/* Push content below fixed header via explicit spacer div.
   The spacer is output in header.php and hidden on overlay pages.
   This is more reliable than padding-top on site-main. */
.header-spacer {
    height: var(--header-height);
    flex-shrink: 0;
}

body.header-style-overlay .header-spacer {
    display: none;
}

@media (max-width: 768px) {
    .site-header {
        height: var(--header-height-mobile);
    }
    .header-spacer {
        height: var(--header-height-mobile);
    }
}


/* ================================================================
   SOLID HEADER STYLE
   ================================================================ */
.header-style-solid .site-header {
    background-color: var(--header-solid-bg);
    color: var(--header-solid-color);
    border-bottom: 1px solid var(--header-solid-border);
    box-shadow: var(--header-solid-shadow);
}

.header-style-solid .site-header .header-nav a,
.header-style-solid .site-header .site-logo-text {
    color: var(--header-active-color);
}

/* ================================================================
   OVERLAY / TRANSPARENT HEADER STYLE
   ================================================================ */
.header-style-overlay .site-header {
    background-color: var(--header-overlay-bg);
    box-shadow: none;
}

.header-style-overlay .site-header .header-nav a,
.header-style-overlay .site-header .site-logo-text {
    color: var(--header-active-color);
}


/* ================================================================
   SCROLL STATES
   ================================================================ */

/* Hidden — slides up off screen */
.site-header.header--hidden {
    transform: translateY(-100%);
}

/* Revealed — scroll-reveal-solid (dark bg) */
.header-reveal-solid .site-header.header--revealed {
    background-color: var(--header-revealed-solid-bg);
    color: var(--header-revealed-solid-color);
    box-shadow: var(--header-revealed-solid-shadow);
}

.header-reveal-solid .site-header.header--revealed .header-nav a,
.header-reveal-solid .site-header.header--revealed .site-logo-text {
    color: var(--header-active-color);
}

/* On revealed solid: logo goes back to normal (not inverted) */
.header-reveal-solid .site-header.header--revealed .site-logo {
    filter: none;
}

/* Scrolled past threshold — subtle shadow boost on solid headers */
.header-style-solid .site-header.header--scrolled {
    box-shadow: var(--header-revealed-solid-shadow);
}


/* ================================================================
   LOGO
   ================================================================ */
.site-logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    flex-shrink: 0;
}

.site-logo {
    height: var(--header-logo-height);
    max-height: var(--header-logo-height);
    width: auto;
    display: block;
    transition: filter 0.3s ease;
}

/* On transparent/overlay header — invert logo to white */
.header-style-overlay .site-header:not(.header--revealed) .site-logo,
.header-reveal-transparent .site-header.header--revealed .site-logo {
    filter: brightness(0) invert(1);
}

/* On solid revealed state — ensure logo is back to normal */
.header-reveal-solid .site-header.header--revealed .site-logo {
    filter: none;
}

.site-logo-text {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1;
    transition: color 0.3s ease;
}

@media (max-width: 768px) {
    .site-logo {
        height: var(--header-logo-height-mobile);
        max-height: var(--header-logo-height-mobile);
        width: auto;
    }
}


/* ================================================================
   DESKTOP NAVIGATION
   ================================================================ */
.header-nav {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.header-nav ul {
    display: flex;
    align-items: center;
    gap: var(--header-nav-gap);
    list-style: none;
    margin: 0;
    padding: 0;
}

.header-nav ul li {
    margin: 0;
    padding: 0;
    position: relative;
}

.header-nav a {
    display: block;
    font-size: var(--header-nav-font-size);
    font-weight: var(--header-nav-font-weight);
    letter-spacing: var(--header-nav-letter-spacing);
    text-decoration: none;
    transition: opacity 0.2s ease;
    white-space: nowrap;
}

.header-nav a:hover {
    opacity: 0.7;
}

/* Sub-menus (dropdown) */
.header-nav li:has(ul) {
    position: relative;
}

.header-nav li ul {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    flex-direction: column;
    gap: 0;
    min-width: 180px;
    background-color: var(--header-solid-bg);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    border-radius: 4px;
    padding: 0.5rem 0;
    z-index: 10;
}

.header-nav li:hover > ul,
.header-nav li:focus-within > ul {
    display: flex;
}

.header-nav li ul a {
    padding: 0.5rem 1rem;
    color: #ffffff !important; /* always light on dropdown */
    font-size: 0.875rem;
}

.header-nav li ul a:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.1);
}


/* ================================================================
   HAMBURGER BUTTON
   ================================================================ */
.header-hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: calc(var(--header-z-index) + 10);
    flex-shrink: 0;
}

/* Solid header — set active color */
.header-style-solid .site-header {
    --header-active-color: var(--header-solid-color);
}

/* Overlay header — set active color */
.header-style-overlay .site-header {
    --header-active-color: var(--header-overlay-color);
}

/* When revealed as solid */
.header-reveal-solid .site-header.header--revealed {
    --header-active-color: var(--header-revealed-solid-color);
}

/* When revealed as transparent/glassy */
.header-reveal-transparent .site-header.header--revealed {
    --header-active-color: var(--header-revealed-glass-color);
}

.hamburger-bar {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--header-active-color, #ffffff);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease, background-color 0.3s ease;
    transform-origin: center;
}

/* Animated to X when menu open */
.mobile-menu-open .hamburger-bar:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}
.mobile-menu-open .hamburger-bar:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.mobile-menu-open .hamburger-bar:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}


/* ================================================================
   MOBILE NAV STATE — controlled by JS class on .site-header
   ================================================================ */

/* When header is in mobile-nav mode */
.site-header.header--mobile-nav .header-hamburger {
    display: flex;
}

.site-header.header--mobile-nav .header-nav {
    /* Hide desktop nav — shown via slide-in panel below */
    position: fixed;
    top: 0;
    right: 0;
    width: min(320px, 85vw);
    height: 100dvh;
    background-color: var(--header-mobile-menu-bg);
    color: var(--header-mobile-menu-color);
    box-shadow: var(--header-mobile-menu-shadow);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 2rem;
    transform: translateX(100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: calc(var(--header-z-index) + 5);
    overflow-y: auto;
}

.site-header.header--mobile-nav .header-nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    width: 100%;
}

.site-header.header--mobile-nav .header-nav a {
    color: var(--header-mobile-menu-color) !important;
    font-size: 1.25rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    width: 100%;
}

/* Mobile sub-menus */
.site-header.header--mobile-nav .header-nav li ul {
    display: flex;
    position: static;
    box-shadow: none;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 0;
    padding: 0 0 0 1rem;
}

.site-header.header--mobile-nav .header-nav li ul a {
    font-size: 1rem;
    padding: 0.5rem 0;
}

/* Open state — slide in from right */
.site-header.header--mobile-nav.mobile-menu-open .header-nav {
    transform: translateX(0);
}

/* Overlay behind open mobile menu — on body so it covers full viewport.
   z-index sits above page content but below the header and slide-out nav. */
body.mobile-menu-open::before {
    content: '';
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: calc(var(--header-z-index) - 1);
}

/* Keep hamburger above the dim */
.site-header.header--mobile-nav.mobile-menu-open .header-hamburger {
    position: relative;
}

/* When desktop, ensure hamburger is hidden */
.site-header.header--desktop-nav .header-hamburger {
    display: none;
}

.site-header.header--desktop-nav .header-nav {
    /* Ensure desktop nav is visible/reset */
    position: static;
    width: auto;
    height: auto;
    background: transparent;
    box-shadow: none;
    transform: none;
    padding: 0;
    flex-direction: row;
    overflow: visible;
}


/* ================================================================
   ACCESSIBILITY
   ================================================================ */

/* Skip link */
.skip-link {
    position: absolute;
    top: -100%;
    left: 1rem;
    z-index: calc(var(--header-z-index) + 100);
    padding: 0.5rem 1rem;
    background: #000;
    color: #fff;
    text-decoration: none;
    border-radius: 0 0 4px 4px;
    font-size: 0.875rem;
    transition: top 0.2s;
}

.skip-link:focus {
    top: 0;
}

/* Focus styles for nav links */
.header-nav a:focus-visible {
    outline: 2px solid currentColor;
    outline-offset: 3px;
    border-radius: 2px;
}

.header-hamburger:focus-visible {
    outline: 2px solid currentColor;
    outline-offset: 4px;
    border-radius: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .site-header,
    .header-nav,
    .hamburger-bar,
    .site-logo,
    .site-logo-text {
        transition: none;
    }
}


/* ================================================================
   ADMIN BAR OFFSET
   WP admin bar is fixed at top:0 and adds margin-top to <html>.
   We only need to push our fixed header down to sit below the bar.
   The spacer height stays as normal header height — WP handles the rest.
   ================================================================ */
.admin-bar .site-header {
    top: 32px;
}

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


/* ================================================================
   OVERLAY PAGES — REMOVE SITE-MAIN PADDING
   ================================================================ */
body.header-style-overlay .site-main {
    padding-top: 0;
}


/* ================================================================
   LOGO — ALWAYS WHITE
   Political sites typically have a colored/dark header. Apply white
   filter universally. Override with .site-logo { filter: none } in
   site plugin if a specific site needs the original logo colors.
   ================================================================ */
.site-logo {
    filter: brightness(0) invert(1);
}

/* Preserve the overlay/reveal logic — already white so filter: none
   on revealed-solid is still correct (header goes light on scroll) */
.header-reveal-solid .site-header.header--revealed .site-logo {
    filter: none;
}


/* ================================================================
   SEARCH — HEADER TOGGLE BUTTON
   ================================================================ */
.header-search-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    flex-shrink: 0;
    color: #ffffff;
    text-transform: none;
    letter-spacing: normal;
    font-size: inherit;
    transition: opacity 0.2s ease;
    z-index: calc(var(--header-z-index, 1000) + 10);
}

.header-search-toggle:hover {
    opacity: 0.7;
    color: #ffffff;
    background: none;
    border: none;
}

.header-search-toggle:focus-visible {
    outline: 2px solid currentColor;
    outline-offset: 4px;
    border-radius: 2px;
}

.header-search-toggle svg {
    width: 20px;
    height: 20px;
    display: block;
    fill: currentColor;
}


/* ================================================================
   SEARCH — OVERLAY
   ================================================================ */
.search-overlay[hidden] {
    display: none;
}

.search-overlay {
    position: fixed;
    inset: 0;
    background: rgba(29, 53, 87, 0.7); /* Oxford Navy tint */
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    box-sizing: border-box;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.search-overlay.is-open {
    opacity: 1;
}

body.search-overlay-open {
    overflow: hidden;
}

/* Card */
.search-overlay__card {
    position: relative;
    width: 100%;
    max-width: 520px;
    background: var(--color-background, #ffffff);
    padding: 2.5rem 3rem;
    box-shadow: 0 8px 40px rgba(29, 53, 87, 0.25);
    border-radius: var(--border-radius, 8px);
    animation: searchSlideUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-sizing: border-box;
}

@media (max-width: 480px) {
    .search-overlay__card {
        padding: 2rem 1.5rem;
    }
}

@keyframes searchSlideUp {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* Title */
.search-overlay__title {
    font-family: var(--font-primary);
    font-size: var(--font-size-2xl, 1.5rem);
    font-weight: 600;
    color: var(--color-text);
    text-align: left;
    margin: 0 0 1rem;
}

/* Close button */
.search-overlay__close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    text-transform: none;
    letter-spacing: normal;
    color: var(--color-text-light);
    transition: color 0.2s ease;
}

.search-overlay__close:hover {
    color: var(--color-text);
    background: none;
    border: none;
}

.search-overlay__close:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
    border-radius: 2px;
}

.search-overlay__close svg {
    display: block;
    fill: currentColor;
    width: 18px;
    height: 18px;
}

/* Input row */
.search-overlay__input-wrap {
    display: flex;
    align-items: center;
    border-bottom: 2px solid var(--color-border, #dce8ea);
    gap: 0.5rem;
    transition: border-color 0.2s ease;
}

.search-overlay__input-wrap:focus-within {
    border-bottom-color: var(--color-accent);
}

.search-overlay__input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    font-family: var(--font-primary);
    font-size: var(--font-size-xl, 1.25rem);
    font-weight: 400;
    color: var(--color-text);
    padding: 0.5rem 0;
    min-width: 0;
    width: 100%;
}

.search-overlay__input:focus,
.search-overlay__input:focus-visible {
    outline: none;
    box-shadow: none;
    border: none;
}

.search-overlay__input::-webkit-search-decoration,
.search-overlay__input::-webkit-search-results-button,
.search-overlay__input::-webkit-search-results-decoration {
    display: none;
}

.search-overlay__input::placeholder {
    color: var(--color-text-light);
    font-style: italic;
}

/* ID beats global input[type=search] border-bottom */
input#search-overlay-input {
    border-bottom: none;
}

/* Submit button */
.search-overlay__submit {
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem;
    text-transform: none;
    letter-spacing: normal;
    color: var(--color-text-light);
    flex-shrink: 0;
    transition: color 0.2s ease;
}

.search-overlay__submit:hover {
    color: var(--color-accent);
    background: none;
    border: none;
}

.search-overlay__submit:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
    border-radius: 2px;
}

.search-overlay__submit svg {
    width: 22px;
    height: 22px;
    display: block;
    fill: currentColor;
}