/* ===================================================
   6. HEADER & NAVIGATION
   =================================================== */

.top-nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    margin: 0 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 28px;
    background: var(--color-surface);
    backdrop-filter: blur(40px);
    border: 1px solid var(--color-border);
    border-top: none;
    border-bottom-left-radius: var(--r-xl);
    border-bottom-right-radius: var(--r-xl);
    box-shadow: var(--shadow-md);
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

nav.top-nav .logo-image {
    height: clamp(40px, 5vw, 72px);
    width: auto;
    transition: transform 0.1s;
}

nav.top-nav .logo:hover .logo-image { transform: scale(1.04); }

.nav-right {
    display: flex;
    align-items: center;
    gap: var(--s2);
}

.nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    border-radius: var(--r-sm);
    border: 1px solid var(--color-border);
    background: var(--color-surface-alt);
    color: var(--color-text);
    font-size: 14px;
    text-decoration: none;
    transition: all 0.25s;
    white-space: nowrap;
}

.nav-btn:hover {
    border-color: var(--color-border-hover);
    background: var(--color-accent);
    color: var(--color-text);
    transform: translateY(-1px);
}

.nav-btn.cart-btn {
    color: var(--color-accent);
    background: transparent;
    border-color: transparent;
    font-size: 20px;
    padding: 8px;
    margin-left: var(--s2);
}

.nav-btn.cart-btn:hover {
    color: var(--color-accent-light);
    background: transparent;
    border-color: transparent;
    transform: scale(1.1);
}

.cart-count {
    background: transparent;
    color: #fff;
    border-radius: 50%;
    font-size: 12px;
    width: 14px;
    height: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

/* ===================================================
   TOAST / BENACHRICHTIGUNG
   =================================================== */

.ov-toast {
    position: fixed;
    left: 50%;
    bottom: 28px;
    transform: translate(-50%, 120%);
    z-index: 10000;
    display: flex;
    align-items: center;
    gap: var(--s2);
    max-width: 90vw;
    padding: 14px 22px;
    background: var(--color-surface);
    border: 1px solid var(--color-border-hover);
    border-radius: var(--r-pill);
    box-shadow: var(--shadow-lg);
    color: var(--color-text);
    font-size: 14px;
    font-weight: 500;
    opacity: 0;
    pointer-events: none;
    transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.35s ease;
}

.ov-toast.show {
    transform: translate(-50%, 0);
    opacity: 1;
}

.ov-toast-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    border-radius: 50%;
    background: var(--color-accent);
    color: #fff;
    font-size: 14px;
    font-weight: 700;
}

/* Add-to-Cart Ladezustand */
.add_to_cart_button.loading {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
}

/* ===================================================
   7. HAMBURGER MENU
   =================================================== */

.hamburger {
    display: none;
    background: transparent;
    border: none;
    color: var(--color-text);
    padding: 8px;
    font-size: 22px;
    cursor: pointer;
    line-height: 1;
    transition: transform 0.2s, color 0.2s;
}

.hamburger:hover {
    color: var(--color-accent-light);
    transform: scale(1.1);
}

.mobile-menu {
    position: fixed;
    inset: 0;
    background: var(--color-bg);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
    overflow-y: auto;
}

.mobile-menu::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: url('https://openvuture.shop/wp-content/uploads/2026/06/purple-splash-scaled.jpg');
    background-size: cover;
    background-position: center;
    opacity: 0.15;
    pointer-events: none;
}

.mobile-menu.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.mobile-menu-header {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 24px;
    border-bottom: 1px solid var(--color-border);
}

.mobile-menu-header .logo-image {
    height: 48px;
    width: auto;
}

.mobile-menu-close {
    background: var(--color-surface-alt);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    width: 44px;
    height: 44px;
    border-radius: var(--r-sm);
    font-size: 28px;
    cursor: pointer;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.mobile-menu-close:hover {
    border-color: var(--color-border-hover);
}

.mobile-menu-nav {
    position: relative;
    z-index: 1;
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: var(--s3) var(--s3) var(--s5);
    gap: var(--s1);
}

.mobile-menu-nav .nav-btn {
    width: 100%;
    justify-content: space-between;
    font-size: 20px;
    font-weight: 500;
    padding: 20px 24px;
    border-radius: var(--r-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
}

.mobile-menu-nav .nav-btn::after {
    content: '›';
    font-size: 24px;
    color: var(--color-text-muted);
}

.mobile-menu-nav .nav-btn:hover {
    background: var(--color-surface-alt);
    border-color: var(--color-border-hover);
    transform: none;
}