/* ========== 懸浮購物車按鈕（平板和手機版） ========== */

.floating-cart-btn {
    position: fixed;
    bottom: 80px;
    left: 20px; /* 改為左下角 */
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #7b7170, #c0392b);
    color: white;
    border-radius: 25%;
    display: none; /* 預設隱藏，只在平板和手機版顯示 */
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(231, 76, 60, 0.4);
    z-index: 999;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 24px;
}

.floating-cart-btn:hover,
.floating-cart-btn:focus {
    background: linear-gradient(72deg, #ff2812, #992c23);
    color: white;
    text-decoration: none;
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(231, 76, 60, 0.5);
}

.floating-cart-btn:active {
    transform: scale(0.95);
}

.floating-cart-btn i {
    font-size: 24px;
}

.floating-cart-count {
    position: absolute;
    top: -5px;
    right: -5px;
    background: #ffc107;
    color: #333;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    border: 2px solid white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* 當購物車為空時隱藏按鈕 */
.floating-cart-btn.hidden {
    display: none !important;
    opacity: 0;
    pointer-events: none;
}

/* 平板設備 (768px - 992px) */
@media (max-width: 992px) {
    .floating-cart-btn {
        display: flex;
        /* 與回到頂部按鈕齊高 */
        bottom: 30px;
        left: 30px; /* 左下角，與回到頂部按鈕對稱 */
        width: 56px;
        height: 56px;
        font-size: 22px;
    }

    .floating-cart-btn i {
        font-size: 22px;
    }

    .floating-cart-count {
        width: 22px;
        height: 22px;
        font-size: 11px;
        top: -4px;
        right: -4px;
    }
}

/* 手機設備 (< 768px) */
@media (max-width: 768px) {
    .floating-cart-btn {
        display: flex;
        /* 與回到頂部按鈕齊高 */
        bottom: 20px;
        left: 20px; /* 左下角，與回到頂部按鈕對稱 */
        width: 50px;
        height: 50px;
        font-size: 20px;
        /* 確保不會被瀏覽器底部導航欄遮擋 */
        bottom: max(20px, calc(env(safe-area-inset-bottom, 0px) + 20px));
    }

    .floating-cart-btn i {
        font-size: 20px;
    }

    .floating-cart-count {
        width: 20px;
        height: 20px;
        font-size: 10px;
        top: -3px;
        right: -3px;
    }
}

/* 小手機設備 (< 480px) */
@media (max-width: 480px) {
    .floating-cart-btn {
        /* 與回到頂部按鈕齊高 */
        bottom: 15px;
        left: 15px; /* 左下角，與回到頂部按鈕對稱 */
        width: 48px;
        height: 48px;
        font-size: 18px;
        /* 確保不會被瀏覽器底部導航欄遮擋 */
        bottom: max(15px, calc(env(safe-area-inset-bottom, 0px) + 15px));
    }

    .floating-cart-btn i {
        font-size: 18px;
    }

    .floating-cart-count {
        width: 18px;
        height: 18px;
        font-size: 9px;
        top: -3px;
        right: -3px;
    }
}

/* 確保在購物車頁面時不顯示懸浮按鈕 */
body.cart-page .floating-cart-btn {
    display: none !important;
}