/* ============================================
   CART SIDEBAR
   ============================================ */
.cart-sidebar {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    height: 100vh;
    background: var(--text-light);
    box-shadow: var(--shadow-lg);
    z-index: 2000;
    transition: right 0.3s ease;
    display: flex;
    flex-direction: column;
}

.cart-sidebar.active {
    right: 0;
}

.cart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.cart-header h3 {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    text-transform: uppercase;
}

.close-cart {
    font-size: 1.5rem;
    color: var(--text-gray);
    transition: var(--transition);
}

.close-cart:hover {
    color: var(--danger-color);
}

.cart-items {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
}

.cart-empty {
    text-align: center;
    color: var(--text-gray);
    padding: 40px 20px;
}

.cart-footer {
    padding: 20px;
    border-top: 1px solid var(--border-color);
}

.cart-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.cart-footer .btn {
    margin-bottom: 10px;
}

/* ============================================
   OVERLAY
   ============================================ */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    z-index: 1500;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ============================================
   SCROLL TO TOP
   ============================================ */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--accent-color);
    color: var(--text-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1000;
}

.scroll-to-top.active {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    background: var(--secondary-color);
    transform: translateY(-5px);
}