.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 50;
    backdrop-filter: blur(16px);
    background: rgba(246, 244, 238, 0.72);
    border-bottom: 1px solid rgba(24, 49, 38, 0.06);
    transition:
        background 250ms ease,
        box-shadow 250ms ease,
        border-color 250ms ease;
}

.site-header.is-scrolled {
    background: rgba(255, 255, 255, 0.84);
    box-shadow: 0 14px 34px rgba(24, 49, 38, 0.08);
    border-bottom-color: rgba(24, 49, 38, 0.08);
}

.header-inner {
    min-height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.brand {
    display: inline-flex;
    align-items: center;
}

.brand-logo {
    width: 120px;
    height: auto;
    display: block;

}

.nav {
    display: flex;
    align-items: center;
    gap: 22px;
    color: var(--muted, #5f7468);
    font-weight: 600;
    font-size: 0.92rem;
}

.nav a {
    position: relative;
}

.nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 100%;
    height: 2px;
    background: var(--primary, #2f7d57);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 220ms ease;
}

.nav a:hover,
.nav a.is-active {
    color: var(--text, #183126);
}

.nav a:hover::after,
.nav a.is-active::after {
    transform: scaleX(1);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 18px;
    border-radius: 999px;
    border: 1px solid transparent;
    font-weight: 700;
    font-size: 0.92rem;

    transition:
        transform 250ms ease,
        box-shadow 250ms ease,
        background 250ms ease,
        border-color 250ms ease;
    white-space: nowrap;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    background: linear-gradient(180deg, #3e9568 0%, #2f7d57 100%);
    color: #fff;
    box-shadow: 0 16px 30px rgba(47, 125, 87, 0.24);
}

.btn-primary:hover {
    box-shadow: 0 20px 34px rgba(47, 125, 87, 0.3);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.72);
    border-color: rgba(24, 49, 38, 0.08);
    color: var(--text, #183126);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: #fff;
}

/* ZOO THEME */
.site-header.theme-zoo {
    background: rgba(248, 243, 234, 0.82);
    border-bottom-color: rgba(53, 38, 27, 0.08);
}

.site-header.theme-zoo.is-scrolled {
    background: rgba(255, 250, 244, 0.9);
    box-shadow: 0 14px 34px rgba(73, 48, 24, 0.08);
    border-bottom-color: rgba(53, 38, 27, 0.1);
}

.site-header.theme-zoo .nav {
    color: #7b6a5a;
}

.site-header.theme-zoo .nav a:hover,
.site-header.theme-zoo .nav a.is-active {
    color: #35261b;
}

.site-header.theme-zoo .nav a::after {
    background: #9a6a3a;
}

.site-header.theme-zoo .btn-primary {
    background: linear-gradient(180deg, #aa7440 0%, #8f6034 100%);
    color: #fff;
    box-shadow: 0 16px 30px rgba(143, 96, 52, 0.24);
}

.site-header.theme-zoo .btn-primary:hover {
    box-shadow: 0 20px 34px rgba(143, 96, 52, 0.3);
}

.site-header.theme-zoo .btn-secondary {
    background: rgba(255, 250, 244, 0.8);
    border-color: rgba(53, 38, 27, 0.08);
    color: #35261b;
}

.site-header.theme-zoo .btn-secondary:hover {
    background: #fffaf5;
}

.nav-icon {
    display: none;
}

/* RESPONSIVE */
@media (max-width: 1100px) {
    .nav {
        display: none;
    }
}

@media (max-width: 720px) {
    .header-actions .btn-secondary {
        display: none;
    }

    .brand-logo {
        width: 104px;
    }
}