.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(30, 26, 23, 0.85);
    backdrop-filter: blur(16px) saturate(140%);
    -webkit-backdrop-filter: blur(16px) saturate(140%);
    border-bottom: 1px solid rgba(199, 146, 90, 0.12);
    transition: background var(--transition), box-shadow var(--transition);
    font-family: var(--font-body);
}

.site-header.scrolled {
    background: rgba(30, 26, 23, 0.95);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.6rem 1.5rem;
    gap: 2rem;
}

.header-brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    color: var(--color-text);
    flex-shrink: 0;
}

.brand-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: rgba(199, 146, 90, 0.1);
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
    transition: transform var(--transition), box-shadow var(--transition);
}

.header-brand:hover .brand-icon {
    transform: rotate(-10deg) scale(1.05);
    box-shadow: 0 0 16px rgba(199, 146, 90, 0.3);
}

.brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
}

.brand-name {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--color-primary);
    letter-spacing: 0.02em;
}

.brand-sub {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-text-secondary);
}

.header-nav {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 0.25rem;
}

.nav-link {
    display: inline-block;
    padding: 0.6rem 1rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    border-radius: 0.4rem;
    position: relative;
    transition: color var(--transition), background var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0.3rem;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 60%;
    height: 2px;
    background: var(--color-primary);
    border-radius: 2px;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover {
    color: var(--color-text);
    background: rgba(199, 146, 90, 0.06);
}

.nav-link:hover::after {
    transform: translateX(-50%) scaleX(1);
}

.nav-link.active {
    color: var(--color-primary);
    font-weight: 600;
}

.nav-link.active::after {
    transform: translateX(-50%) scaleX(1);
    background: var(--color-primary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.header-cart {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition), background var(--transition);
}

.header-cart:hover {
    color: var(--color-primary);
    background: rgba(199, 146, 90, 0.08);
}

.cart-badge {
    position: absolute;
    top: 2px;
    right: 2px;
    min-width: 18px;
    height: 18px;
    padding: 0 4px;
    background: var(--color-primary);
    color: #fff;
    font-size: 0.65rem;
    font-weight: 700;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    pointer-events: none;
    box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}

.cart-badge:empty {
    display: none;
}

.header-theme-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: none;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: color var(--transition), background var(--transition);
    position: relative;
}

.header-theme-btn:hover {
    color: var(--color-primary);
    background: rgba(199, 146, 90, 0.08);
}

.icon-sun,
.icon-moon {
    position: absolute;
    transition: opacity 0.4s, transform 0.4s;
}

[data-theme="dark"] .icon-sun,
:root:not([data-theme]) .icon-sun {
    opacity: 1;
    transform: rotate(0deg);
}
[data-theme="dark"] .icon-moon,
:root:not([data-theme]) .icon-moon {
    opacity: 0;
    transform: rotate(-90deg);
}

[data-theme="light"] .icon-sun {
    opacity: 0;
    transform: rotate(90deg);
}
[data-theme="light"] .icon-moon {
    opacity: 1;
    transform: rotate(0deg);
}

.header-hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: none;
    border: none;
    cursor: pointer;
    gap: 5px;
    padding: 0;
    position: relative;
    z-index: 1001;
}

.hamburger-line {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

.header-ornament {
    line-height: 0;
    overflow: hidden;
}
.header-ornament svg {
    display: block;
    width: 100%;
    height: auto;
}

@media (max-width: 900px) {
    .header-hamburger {
        display: flex;
    }

    .header-nav {
        position: fixed;
        top: 0;
        right: 0;
        transform: translateX(100%);
        width: min(320px, 80vw);
        height: 100vh;
        height: 100dvh;
        background: var(--color-surface);
        box-shadow: -8px 0 30px rgba(0, 0, 0, 0.5);
        padding: 5rem 2rem 2rem;
        transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 1000;
        flex-direction: column;
        align-items: stretch;
    }

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

    .nav-list {
        flex-direction: column;
        gap: 0.5rem;
    }

    .nav-link {
        font-size: 1.1rem;
        padding: 0.8rem 1rem;
        border-radius: var(--radius);
    }

    .nav-link::after {
        display: none;
    }

    .header-nav.open::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        background: rgba(0, 0, 0, 0.5);
        z-index: -1;
        opacity: 1;
        transition: opacity 0.3s;
    }
}