/* =============================
   Header
============================= */
.site-header {
    background: var(--white);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1400px;
    margin: auto;
    padding: 0.9rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* =============================
   Logo
============================= */
.logo img {
    height: 80px;
    width: 80px;
    object-fit: contain;
}

/* =============================
   Menu Base
============================= */
.nav-menu>ul {
    display: flex;
    align-items: center;
    gap: 1.4rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-menu li {
    position: relative;
}

.nav-menu a {
    color: var(--text);
    font-size: 1.2rem;
    font-weight: 500;
    position: relative;
    padding: 0.3rem 0;
    text-decoration: none;
    white-space: nowrap;
}

/* Hover underline */
.nav-menu a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 100%;
}

/* =============================
   Volunteer Button
============================= */
.nav-volunteer a {
    padding: 0.45rem 1.1rem;
    border: 1px solid var(--primary);
    border-radius: 20px;
    color: var(--primary);
    font-weight: 600;
}

.nav-volunteer a::after {
    display: none;
}

.nav-volunteer a:hover {
    background: var(--primary);
    color: var(--white);
}

/* =============================
   Donate Button
============================= */
.nav-donate a {
    padding: 0.55rem 1.3rem;
    border-radius: 22px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    font-weight: 600;
    box-shadow: 0 6px 18px rgba(88, 107, 223, 0.25);
}

.nav-donate a::after {
    display: none;
}

.nav-donate a:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 22px rgba(88, 107, 223, 0.35);
}

/* =============================
   Dropdown
============================= */
.has-dropdown>a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.has-dropdown>a::after {
    content: "▾";
    font-size: 0.9rem;
    transition: transform 0.3s ease;
}

.dropdown {
    position: absolute;
    top: 130%;
    left: 0;
    min-width: 220px;
    background: var(--white);
    border-radius: 10px;
    padding: 0.5rem 0;
    list-style: none;
    margin: 0;
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.08);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
}

.dropdown li {
    display: block;
}

.dropdown li:not(:last-child) {
    border-bottom: 1px dashed var(--primary);
}

.dropdown a {
    display: block;
    padding: 0.7rem 1.2rem;
    font-size: 1rem;
}

.dropdown a::after {
    display: none;
}

.dropdown a:hover {
    background: var(--hover-bg);
}

.has-dropdown:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* =============================
   Hamburger
============================= */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 26px;
    height: 2px;
    background: var(--text);
    transition: all 0.3s ease;
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* =============================
   Mobile Menu
============================= */
@media (max-width: 1080px) {

    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        inset: 90px 0 0 0;
        background: var(--white);
        transform: translateX(100%);
        transition: transform 0.35s ease;
        overflow-y: auto;
    }

    .nav-menu.open {
        transform: translateX(0);
    }

    .nav-menu>ul {
        flex-direction: column;
        align-items: stretch;
        gap: 0.4rem;
        padding: 1.5rem;
    }

    .nav-menu li {
        width: 100%;
    }

    .nav-menu a {
        display: block;
        font-size: 1rem;
        padding: 0.65rem 0;
    }

    /* Mobile dropdown */
    .dropdown {
        position: static;
        box-shadow: none;
        transform: none;
        opacity: 1;
        visibility: visible;
        display: none;
        padding-left: 1rem;
        background: transparent;
    }

    .has-dropdown.open .dropdown {
        display: block;
    }

    .has-dropdown.open>a::after {
        transform: rotate(180deg);
    }

    /* Mobile buttons spacing */
    .nav-volunteer,
    .nav-donate {
        margin-top: 0.6rem;
    }

    .nav-volunteer a,
    .nav-donate a {
        width: 100%;
        text-align: center;
        border-radius: 10px;
        padding: 0.8rem 1rem;
    }

    .nav-donate a {
        box-shadow: 0 6px 14px rgba(88, 107, 223, 0.25);
    }
}