/* ==========================================================================
   Header Styles — Best Plumber (Variation A: Faithful to Cooper & Jones)
   ==========================================================================
   Three-zone header: utility bar, main navigation, mobile menu.
   Dark charcoal utility bar, clean white nav, sharp angular buttons,
   animated underline hovers, sticky with backdrop blur on scroll.
   ========================================================================== */

/* --------------------------------------------------------------------------
   Utility Bar — Top strip with trust signals and phone number
   -------------------------------------------------------------------------- */

.utility-bar {
    background-color: var(--bg-dark);
    color: var(--text-inverse);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    line-height: 1;
    letter-spacing: var(--tracking-wide);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.utility-bar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.625rem 0;
    gap: var(--space-md);
}

.utility-bar__item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.utility-bar__icon {
    flex-shrink: 0;
    opacity: 0.7;
}

.utility-bar__item--left .utility-bar__icon {
    color: var(--color-accent);
    opacity: 1;
}

.utility-bar__item--right .utility-bar__icon {
    color: var(--color-primary);
    opacity: 1;
}

.utility-bar__link {
    color: var(--text-inverse);
    text-decoration: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    transition: border-color var(--transition-fast);
}

.utility-bar__link:hover {
    border-color: var(--color-accent);
}

.utility-bar__phone {
    color: var(--text-inverse);
    text-decoration: none;
    font-weight: var(--font-bold);
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

.utility-bar__phone:hover {
    color: var(--color-accent);
}


/* --------------------------------------------------------------------------
   Site Header — Main Navigation Bar
   -------------------------------------------------------------------------- */

.site-header {
    position: relative;
    width: 100%;
    background-color: var(--bg-primary);
    z-index: var(--z-sticky);
    transition: background-color var(--transition-base),
                box-shadow var(--transition-base);
}

/* JS adds --pinned when user scrolls past utility bar */
.site-header--pinned {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    box-shadow: var(--shadow-lg);
    background-color: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    animation: headerSlideDown 300ms var(--ease-out) both;
}

@keyframes headerSlideDown {
    from { transform: translateY(-100%); }
    to   { transform: translateY(0); }
}

/* Spacer injected by JS to prevent layout jump when header goes fixed */
.site-header-spacer {
    display: none;
}

.site-header-spacer--active {
    display: block;
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    gap: var(--space-xl);
}


/* --------------------------------------------------------------------------
   Logo / Brand
   -------------------------------------------------------------------------- */

.site-header__brand {
    flex-shrink: 0;
}

.site-header__logo-link {
    display: flex;
    align-items: center;
}

.site-header__logo {
    max-height: 56px;
    width: auto;
    transition: max-height var(--transition-base);
}

.site-header--pinned .site-header__logo {
    max-height: 44px;
}

.site-header__site-name {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: var(--font-bold);
    color: var(--text-primary);
    letter-spacing: var(--tracking-tight);
    text-transform: uppercase;
}


/* --------------------------------------------------------------------------
   Desktop Navigation — Animated Underline Style (Cooper & Jones pattern)
   -------------------------------------------------------------------------- */

.site-header__nav {
    display: flex;
    align-items: center;
}

.site-header__menu {
    display: flex;
    align-items: center;
    gap: 0;
    list-style: none;
}

.site-header__menu li {
    position: relative;
}

.site-header__menu > li > a {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: var(--font-bold);
    color: var(--text-secondary);
    letter-spacing: var(--tracking-wide);
    text-decoration: none;
    position: relative;
    transition: color var(--transition-fast);
}

/* Animated underline on hover — 2px red line, scales from center */
.site-header__menu > li > a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 1rem;
    right: 1rem;
    height: 2px;
    background-color: var(--color-primary);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform var(--transition-base);
}

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

.site-header__menu > li > a:hover::after,
.site-header__menu > li.current-menu-item > a::after,
.site-header__menu > li.current-menu-ancestor > a::after {
    transform: scaleX(1);
}


/* --------------------------------------------------------------------------
   Dropdown Menu — Clean white panel with shadow
   -------------------------------------------------------------------------- */

.site-header__menu .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 240px;
    padding: var(--space-sm) 0;
    background-color: var(--bg-primary);
    border-top: 2px solid var(--color-primary);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity var(--transition-fast),
                transform var(--transition-fast),
                visibility var(--transition-fast);
    z-index: var(--z-dropdown);
    list-style: none;
}

.site-header__menu li:hover > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.site-header__menu .sub-menu li a {
    display: block;
    padding: 0.5rem 1.25rem;
    font-family: var(--font-body);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast),
                background-color var(--transition-fast),
                padding-left var(--transition-fast);
}

.site-header__menu .sub-menu li a:hover {
    color: var(--color-primary);
    background-color: var(--gray-50);
    padding-left: 1.5rem;
}


/* --------------------------------------------------------------------------
   Header Actions — Phone link + CTA button
   -------------------------------------------------------------------------- */

.site-header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-shrink: 0;
}

.site-header__phone-link {
    display: none;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
    text-decoration: none;
    font-family: var(--font-body);
    font-weight: var(--font-bold);
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

.site-header__phone-link:hover {
    color: var(--color-primary);
}

.site-header__phone-icon {
    color: var(--color-primary);
}

.site-header__cta {
    display: none;
    font-family: var(--font-body);
    font-size: var(--text-md);
    font-weight: var(--font-bold);
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    padding: 0.75rem 2rem;
    border-radius: var(--radius-sm);
    background-color: var(--color-primary);
    color: var(--text-inverse);
    box-shadow: var(--shadow-button);
    transition: background-color var(--transition-button),
                box-shadow var(--transition-button),
                transform var(--transition-button);
}

.site-header__cta:hover {
    background-color: var(--color-primary-dark);
    box-shadow: var(--shadow-button-hover);
    transform: translateY(-1px);
}

.site-header__cta:active {
    transform: translateY(0);
}

@media (min-width: 1025px) {
    .site-header__cta {
        display: inline-flex;
    }

    .site-header__phone-link {
        display: flex;
    }
}

@media (min-width: 1280px) {
    .site-header__phone-link {
        display: flex;
    }
}


/* --------------------------------------------------------------------------
   Mobile Menu Toggle (Hamburger)
   -------------------------------------------------------------------------- */

.site-header__menu-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    background: none;
    border: none;
    cursor: pointer;
    z-index: calc(var(--z-overlay) + 1);
}

.site-header__hamburger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 26px;
    height: 24px;
}

.site-header__hamburger-line {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 1px;
    transition: transform var(--transition-base), opacity var(--transition-base);
    transform-origin: center;
}

/* Hamburger to X animation */
.site-header__menu-toggle[aria-expanded="true"] .site-header__hamburger-line:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.site-header__menu-toggle[aria-expanded="true"] .site-header__hamburger-line:nth-child(2) {
    opacity: 0;
}

.site-header__menu-toggle[aria-expanded="true"] .site-header__hamburger-line:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

@media (max-width: 1024px) {
    .site-header__menu-toggle {
        display: flex;
    }

    .site-header__nav {
        display: none;
    }

    .site-header__cta {
        display: none;
    }
}


/* --------------------------------------------------------------------------
   Mobile Menu Panel — Full-screen overlay with slide-in panel
   -------------------------------------------------------------------------- */

.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-overlay);
    pointer-events: none;
}

.mobile-menu[aria-hidden="false"] {
    pointer-events: auto;
}

/* Overlay */
.mobile-menu__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.mobile-menu[aria-hidden="false"] .mobile-menu__overlay {
    opacity: 1;
}

/* Panel */
.mobile-menu__panel {
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    max-width: 400px;
    height: 100%;
    background-color: var(--bg-primary);
    padding: var(--space-xl) var(--space-lg);
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform var(--transition-slow);
    box-shadow: -8px 0 30px rgba(0, 0, 0, 0.15);
}

.mobile-menu[aria-hidden="false"] .mobile-menu__panel {
    transform: translateX(0);
}

/* Close button */
.mobile-menu__close {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    background: none;
    border: none;
    cursor: pointer;
    transition: color var(--transition-fast), background-color var(--transition-fast);
}

.mobile-menu__close:hover {
    color: var(--color-primary);
    background-color: var(--gray-50);
}

/* Phone in mobile menu — always visible */
.mobile-menu__phone {
    margin-top: var(--space-xl);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--border-color);
}

.mobile-menu__phone-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--color-primary);
    text-decoration: none;
    font-family: var(--font-body);
    font-size: 1.125rem;
    font-weight: var(--font-bold);
}

.mobile-menu__phone-link svg {
    flex-shrink: 0;
}

/* Mobile navigation list */
.mobile-menu__nav {
    margin-top: var(--space-lg);
}

.mobile-menu__list {
    list-style: none;
}

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

.mobile-menu__list > li > a {
    display: block;
    padding: 0.875rem 0;
    font-family: var(--font-body);
    font-size: 1.0625rem;
    font-weight: var(--font-bold);
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.mobile-menu__list > li > a:hover,
.mobile-menu__list > li.current-menu-item > a {
    color: var(--color-primary);
}

/* Mobile sub-menu */
.mobile-menu__list .sub-menu {
    list-style: none;
    padding-bottom: var(--space-sm);
}

.mobile-menu__list .sub-menu li a {
    display: block;
    padding: 0.5rem 0 0.5rem var(--space-lg);
    font-size: var(--text-base);
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.mobile-menu__list .sub-menu li a:hover {
    color: var(--color-primary);
}

/* Mobile CTA */
.mobile-menu__cta {
    margin-top: var(--space-xl);
}

.mobile-menu__cta .btn--full {
    display: block;
    width: 100%;
    text-align: center;
}


/* --------------------------------------------------------------------------
   Responsive Adjustments
   -------------------------------------------------------------------------- */

/* Hide utility bar on small screens (phone in nav is always visible) */
@media (max-width: 767px) {
    .utility-bar__item--left,
    .utility-bar__item--center {
        display: none;
    }

    .utility-bar__inner {
        justify-content: center;
    }

    .utility-bar__phone {
        font-size: var(--text-sm);
    }
}

/* Tablet: show left + phone, hide center */
@media (min-width: 768px) and (max-width: 1024px) {
    .utility-bar__item--center {
        display: none;
    }
}

/* Lock scroll when menu is open */
body.menu-open {
    overflow: hidden;
}