/* ============================================================
   COWAY HEADER NAVIGATION COMPONENT
   ============================================================ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: #ffffff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
    transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

/* Homepage Transparent Header State */
.site-header.header-home {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    z-index: 1000;
}

.site-header.header-transparent {
    background: transparent !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    box-shadow: none !important;
    border-bottom: none !important;
}

/* Variant 3: Transparent Header with Dark Text (#333333) for Air Purifier Page */
.site-header.header-transparent.header-transparent-dark {
    background: transparent !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    box-shadow: none !important;
    border-bottom: none !important;
}

.site-header.header-transparent.header-transparent-dark .header-nav > a,
.site-header.header-transparent.header-transparent-dark .nav-dropdown-toggle {
    color: #333333 !important;
}

.site-header.header-transparent.header-transparent-dark .header-nav > a.active,
.site-header.header-transparent.header-transparent-dark .nav-dropdown-toggle.active {
    color: #333333 !important;
    font-weight: 600 !important;
    border-bottom: 2px solid #00A7E1 !important;
}

.site-header.header-transparent.header-transparent-dark .header-nav > a:hover,
.site-header.header-transparent.header-transparent-dark .nav-dropdown-toggle:hover {
    color: #00A7E1 !important;
}

.site-header.header-transparent.header-transparent-dark .header-toggle span {
    background: #333333 !important;
}

.site-header.header-scrolled {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--max-container-desktop);
    margin: 0 auto;
    padding: 16px var(--gutter-desktop);
}

/* Logo Styling */
.header-logo a {
    text-decoration: none;
    display: flex;
    align-items: center;
}

.header-logo-img {
    width: 155px;
    height: auto;
    object-fit: cover;
    display: block;
    opacity: 1;
    transform: rotate(0deg);
    transition: transform 0.3s ease;
}

.header-logo-img:hover {
    transform: scale(1.04);
}

/* Nav Links */
/* Nav Links */
.header-nav {
    display: flex;
    align-items: center;
    gap: 28px;
}

.header-nav>a,
.nav-dropdown-toggle {
    font-family: 'Inter', sans-serif;
    font-size: 15px;
    font-weight: 500;
    line-height: 24px;
    text-decoration: none;
    color: #333333;
    padding: 4px 0;
    border-bottom: 2px solid transparent;
    transition: color 0.25s ease, border-color 0.25s ease;
}

/* Default & Scrolled State Nav Colors */
.site-header.header-transparent .header-nav>a,
.site-header.header-transparent .nav-dropdown-toggle {
    color: #FFFFFF;
}

.site-header.header-scrolled .header-nav>a,
.site-header.header-scrolled .nav-dropdown-toggle {
    color: #333333;
}

/* Active State: border-bottom 2px solid #00A7E1 & font-weight 600 */
.header-nav>a.active,
.nav-dropdown-toggle.active {
    color: #00A7E1 !important;
    font-weight: 600 !important;
    border-bottom: 2px solid #00A7E1 !important;
}

.site-header.header-transparent .header-nav>a.active,
.site-header.header-transparent .nav-dropdown-toggle.active {
    color: #FFFFFF !important;
    font-weight: 600 !important;
    border-bottom: 2px solid #00A7E1 !important;
}

.header-nav>a:hover,
.nav-dropdown-toggle:hover {
    color: #00A7E1;
}

.site-header.header-transparent .header-nav>a:hover,
.site-header.header-transparent .nav-dropdown-toggle:hover {
    color: #FFFFFF;
    opacity: 0.9;
}

/* Dropdown Menu Produk (Figma Spec Match) */
.nav-dropdown {
    position: relative;
    display: inline-block;
}

.nav-dropdown-toggle {
    background: none;
    border: none;
    padding: 4px 0;
    margin: 0;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
}

.dropdown-chevron {
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-dropdown.open .dropdown-chevron,
.nav-dropdown:hover .dropdown-chevron {
    transform: rotate(180deg);
}

.nav-dropdown-menu {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    width: 165px;
    background: #00A7E1;
    border-radius: 8px;
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    box-shadow: 0 10px 30px rgba(0, 167, 225, 0.3);
    border: none;
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 1000;
}

.nav-dropdown.open .nav-dropdown-menu,
.nav-dropdown:hover .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-dropdown-item-box {
    display: flex;
    align-items: center;
    padding: 4px 10px;
    width: 100%;
}

.nav-dropdown-menu a {
    display: inline-block;
    width: 100%;
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    line-height: 24px;
    font-weight: 400;
    color: #FFFFFF !important;
    text-decoration: none;
    text-align: left;
    border-bottom: 2px solid transparent;
    transition: all 0.2s ease;
    padding-bottom: 2px;
}

.nav-dropdown-menu a:hover,
.nav-dropdown-menu a.active {
    font-weight: 600 !important;
    color: #FFFFFF !important;
    border-bottom: 2px solid #E5F8FF !important;
}

/* Button CTA Pill */
.btn-primary-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 24px;
    background: var(--color-primary);
    color: #FFFFFF !important;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    font-size: 14px;
    border-radius: 24px;
    text-decoration: none;
    box-shadow: 0 4px 14px rgba(0, 167, 225, 0.3);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-primary-pill:hover {
    background: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 167, 225, 0.45);
}

.mobile-only-action {
    display: none;
    margin-top: 16px;
    width: 100%;
}

/* Toggle Menu Icon */
.header-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.header-toggle span {
    width: 24px;
    height: 2px;
    background: #333333;
    transition: all 0.3s ease;
    border-radius: 2px;
}

.site-header.header-transparent .header-toggle span {
    background: #FFFFFF;
}

.site-header.header-scrolled .header-toggle span {
    background: #333333;
}

.header-toggle.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.header-toggle.open span:nth-child(2) {
    opacity: 0;
}

.header-toggle.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================================
   RESPONSIVE BREAKPOINTS (4 TIERS)
   ============================================================ */

/* Mac / Laptop Tier (1024px - 1439px) */
@media (max-width: 1439px) and (min-width: 1024px) {
    .header-inner {
        max-width: var(--max-container-mac);
        padding: 14px var(--gutter-mac);
    }

    .header-nav {
        gap: 20px;
    }

    .header-nav>a,
    .nav-dropdown-toggle {
        font-size: 14px;
    }
}

/* Tablet & Mobile Drawer Tiers (< 1024px) */
@media (max-width: 1023px) {
    .site-header.mobile-nav-open,
    .site-header:has(.header-nav.show) {
        background: #ffffff !important;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08) !important;
    }

    .site-header.mobile-nav-open .header-toggle span,
    .site-header:has(.header-nav.show) .header-toggle span {
        background: #333333 !important;
    }

    .header-inner {
        padding: 12px var(--gutter-tablet);
    }

    .header-nav {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        padding: 24px var(--gutter-tablet);
        background: #FFFFFF !important;
        box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
        max-height: calc(100vh - 60px);
        overflow-y: auto;
    }

    .header-nav.show {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .header-nav>a,
    .nav-dropdown {
        width: 100%;
        padding: 14px 0;
        border-bottom: 1px solid #F1F5F9;
        text-align: left;
    }

    .header-nav>a,
    .site-header.header-transparent .header-nav>a {
        color: #333333 !important;
        font-size: 16px;
    }

    .nav-dropdown-toggle,
    .site-header.header-transparent .nav-dropdown-toggle {
        width: 100%;
        justify-content: space-between;
        color: #333333 !important;
        font-size: 16px;
    }

    .header-nav>a.active,
    .site-header.header-transparent .header-nav>a.active,
    .nav-dropdown-toggle.active,
    .site-header.header-transparent .nav-dropdown-toggle.active {
        color: #00A7E1 !important;
        font-weight: 700 !important;
        border-bottom: none !important;
        background: rgba(0, 167, 225, 0.08) !important;
        border-radius: 8px !important;
        padding-left: 12px !important;
    }

    .nav-dropdown-menu {
        position: static;
        transform: none !important;
        width: 100%;
        box-shadow: none;
        border: none;
        background: #F8FAFC !important;
        display: none;
        padding: 8px 12px;
        margin-top: 8px;
        border-radius: 8px;
    }

    .nav-dropdown.open .nav-dropdown-menu {
        display: block;
    }

    .nav-dropdown-menu a {
        color: #333333 !important;
        font-size: 15px;
        font-weight: 500 !important;
        padding: 8px 12px;
        display: block;
        border-bottom: none !important;
    }

    .nav-dropdown-menu a:hover,
    .nav-dropdown-menu a.active {
        color: #00A7E1 !important;
        font-weight: 600 !important;
        background: rgba(0, 167, 225, 0.08);
        border-radius: 6px;
    }

    .mobile-only-action {
        display: block;
    }

    .mobile-only-action .btn-primary-pill {
        width: 100%;
        text-align: center;
    }

    .header-logo-img {
        height: 35px !important;
        width: auto !important;
    }

    .header-action {
        display: none;
    }

    .header-toggle {
        display: flex;
    }
}

/* Mobile Besar Tier (480px - 767px) */
@media (max-width: 767px) and (min-width: 480px) {
    .header-inner {
        padding: 12px var(--gutter-mobile);
    }
}

/* Mobile Kecil Tier (< 480px) */
@media (max-width: 479px) {
    .header-inner {
        padding: 12px var(--gutter-mobile-sm);
    }

    .header-logo-img {
        height: 35px !important;
        width: auto !important;
    }
}