/* ==========================================================================
   Site Header
   ========================================================================== */

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    transition: box-shadow var(--transition);
}

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

.header-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    gap: 24px;
}

/* ==========================================================================
   Logo
   ========================================================================== */

.site-logo a {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-primary-dark);
    text-decoration: none;
    white-space: nowrap;
}

.site-logo a:hover {
    color: var(--color-primary-dark);
}

.logo-text {
    font-size: 1rem;
    line-height: 1.2;
}

.logo-text strong {
    display: block;
    font-weight: 700;
    font-size: 1.1rem;
}

/* ==========================================================================
   Navigation
   ========================================================================== */

.main-navigation {
    display: none;
}

.primary-menu-list {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.primary-menu-list li {
    position: relative;
}

.primary-menu-list li a {
    display: block;
    padding: 8px 16px;
    color: var(--color-text-body);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: color var(--transition), background-color var(--transition);
    white-space: nowrap;
}

.primary-menu-list li a:hover,
.primary-menu-list li.current-menu-item > a {
    color: var(--color-accent);
    background-color: var(--color-light-blue-bg);
}

/* Submenu */
.primary-menu-list .sub-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: 8px 0;
    min-width: 220px;
    z-index: 100;
}

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

.primary-menu-list .sub-menu li a {
    padding: 10px 20px;
    font-size: 0.875rem;
    border-radius: 0;
}

/* ==========================================================================
   Header Actions
   ========================================================================== */

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-phone {
    display: none;
    align-items: center;
    gap: 6px;
    color: var(--color-text-body);
    font-size: 0.9375rem;
    font-weight: 500;
    white-space: nowrap;
}

.header-phone:hover {
    color: var(--color-accent);
}

.header-phone svg {
    flex-shrink: 0;
}

.btn-header-cta {
    display: none;
    padding: 10px 24px;
    background-color: var(--color-accent);
    color: var(--color-white);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: background-color var(--transition);
    white-space: nowrap;
}

.btn-header-cta:hover {
    background-color: var(--color-accent-hover);
    color: var(--color-white);
}

/* ==========================================================================
   Hamburger Menu Toggle
   ========================================================================== */

.menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.hamburger-line {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text-dark);
    border-radius: 1px;
    transition: transform var(--transition), opacity var(--transition);
}

.menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

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

/* ==========================================================================
   Mobile Menu Overlay
   ========================================================================== */

.main-navigation.is-open {
    display: flex;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-white);
    z-index: 999;
    padding: 32px 20px;
    overflow-y: auto;
}

.main-navigation.is-open .primary-menu-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
}

.main-navigation.is-open .primary-menu-list li a {
    padding: 16px 12px;
    font-size: 1.125rem;
    border-bottom: 1px solid var(--color-border);
    border-radius: 0;
}

.main-navigation.is-open .primary-menu-list .sub-menu {
    display: block;
    position: static;
    border: none;
    box-shadow: none;
    padding: 0;
    padding-left: 20px;
    min-width: 0;
}

/* ==========================================================================
   Desktop Breakpoint
   ========================================================================== */

@media (min-width: 1024px) {
    .menu-toggle {
        display: none;
    }

    .main-navigation {
        display: block;
    }

    .header-phone {
        display: flex;
    }

    .btn-header-cta {
        display: inline-block;
    }
}

@media (min-width: 768px) and (max-width: 1023px) {
    .btn-header-cta {
        display: inline-block;
    }

    .logo-text {
        font-size: 0.875rem;
    }

    .logo-text strong {
        font-size: 1rem;
    }
}