/* ==========================================================
   NAVBAR WRAPPER & SCROLL FIXED BEHAVIOR (navbar.css)
   ========================================================== */
#header-section {
    position: relative;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background-color: var(--surface-white);
}

/* Berubah jadi Fixed setelah scroll > 250px */
#header-section.fixed-nav-active {
    position: fixed;
    top: 0;
    left: 0;
    background-color: rgba(255, 255, 255, 0.98) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 10px 30px var(--shadow-hover-color);
    animation: navbarSlideDown 0.35s ease-in-out forwards;
    border-bottom: 1px solid var(--border-line);
}

@keyframes navbarSlideDown {
    from { transform: translateY(-100%); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.custom-navbar {
    padding-top: 1rem;
    padding-bottom: 1rem;
}

.navbar-brand div {
    width: 190px !important;
    height: 52px !important;
}

/* Nav Links Styling */
.navbar-nav {
    gap: 0.25rem;
    align-items: center !important;
}

.navbar-nav .nav-item > .nav-link {
    font-weight: 600;
    font-size: 0.92rem;
    color: var(--text-heading) !important;
    padding: 0.5rem 0.75rem !important;
    transition: color 0.2s ease;
    position: relative;
    display: inline-flex !important;
    align-items: center;
    white-space: nowrap;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active,
.navbar-nav .dropdown-toggle:hover {
    color: var(--primary-red) !important;
}

/* Efek garis bawah hover desktop */
.navbar-nav > .nav-item > .nav-link:not(.dropdown-toggle)::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2.5px;
    bottom: 4px;
    left: 0.75rem;
    right: 0.75rem;
    background-color: var(--secondary-gold);
    transition: width 0.3s ease;
    margin: 0 auto;
    border-radius: 2px;
}

.navbar-nav > .nav-item > .nav-link:not(.dropdown-toggle):hover::after,
.navbar-nav > .nav-item > .nav-link:not(.dropdown-toggle).active::after {
    width: calc(100% - 1.5rem);
}

/* Dropdown styling */
.dropdown-menu {
    border: 1px solid var(--border-line) !important;
    background-color: var(--surface-white);
    box-shadow: 0 10px 25px var(--shadow-color) !important;
    border-radius: 16px;
    padding: 0.5rem;
}

.dropdown-item {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-heading);
    border-radius: 12px;
    padding: 0.5rem 0.8rem;
    transition: all 0.2s ease;
}

.dropdown-item:hover,
.dropdown-item:focus {
    background-color: var(--bg-cream);
    color: var(--primary-red);
}

.dropdown-item.active {
    background-color: var(--primary-red) !important;
    color: var(--white) !important;
}

/* ==========================================================
   DESKTOP MULTI-LEVEL DROPDOWN (GESER KE SAMPING)
   ========================================================== */
@media (min-width: 992px) {
    .dropdown-submenu {
        position: relative;
    }
    
    .dropdown-submenu > .sub-menu-nested {
        position: absolute;
        top: -5px;
        left: 100%;
        margin-left: 0.4rem;
        display: none;
        min-width: 200px;
    }

    .dropdown-submenu:hover > .sub-menu-nested {
        display: block !important;
    }
}

/* ==========================================================
   MOBILE VIEW (RATA KIRI & SUB-MENU BERTINGKAT)
   ========================================================== */
@media (max-width: 991.98px) {
    .navbar-collapse {
        max-height: 75vh;
        overflow-y: auto;
        margin-top: 1.2rem;
        background: var(--surface-white);
        border-radius: 16px;
        box-shadow: 0 15px 35px var(--shadow-color);
        padding: 1.2rem;
        text-align: left !important;
    }

    .navbar-nav {
        align-items: flex-start !important;
        width: 100%;
    }

    .navbar-nav .nav-item {
        width: 100%;
        text-align: left !important;
    }

    .navbar-nav .nav-item > .nav-link,
    .navbar-nav .dropdown-toggle {
        justify-content: flex-start !important;
        text-align: left !important;
        width: 100%;
    }

    .dropdown-menu {
        border: none;
        box-shadow: none !important;
        background-color: var(--bg-cream) !important;
        padding-left: 1rem !important;
        margin-top: 0.2rem !important;
        width: 100%;
    }

    .sub-menu-nested {
        position: static !important;
        display: none;
        padding-left: 1rem !important;
        border-left: 2px solid var(--border-line);
        background: transparent !important;
        box-shadow: none !important;
        width: 100%;
    }
}

/* Komponen Tambahan */
.lang-btn {
    background-color: var(--bg-cream) !important;
    border: 1px solid var(--border-line) !important;
    border-radius: 50px !important;
    padding: 0.5rem 1.2rem !important;
    font-size: 0.92rem !important;
    font-weight: 700 !important;
    color: var(--text-heading) !important;
    min-width: 130px;
    box-shadow: none !important;
}

.btn-donasi {
    background: linear-gradient(135deg, var(--primary-red), var(--primary-red-hover));
    color: var(--white) !important;
    font-weight: 800;
    font-size: 0.92rem;
    border-radius: 50px;
    padding: 0.55rem 1.6rem;
    box-shadow: 0 6px 20px var(--shadow-hover-color);
    border: none;
    white-space: nowrap;
    transition: all 0.3s ease;
}

.btn-donasi:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px var(--shadow-hover-color);
}