/**
 * ECShop 浮動選單與工具樣式
 * floating-menu.css
 * 
 * 檔案說明：
 * 此檔案負責 ECShop 電商系統中所有浮動式UI元件的樣式定義
 * 已調整浮動選單位置：從原本的 bottom: calc(31vh + 25px) 改為 bottom: calc(51vh + 25px)
 * 向下移動了約20%的螢幕高度
 * 
 * 適用版本：PHP 7.3+ / ECShop 4.x / cls_template
 * 版本：1.1
 * 更新：2024 - 調整浮動選單垂直位置
 */

/* ==========================================================================
   浮動選單與快捷按鈕
   ========================================================================== */

.floating-menu {
    position: fixed;
    right: 25px;
    /* 調整：從 31vh 改為 51vh，往下移動20vh (約20%螢幕高度) */
    bottom: calc(51vh + 25px);
    z-index: 1000;
}

.floating-menu-list {
    list-style: none;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    gap: 15px;
}

.floating-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: none;
    background: linear-gradient(135deg, #8b7355, #a08654); /* IE fallback */
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-hover));
    color: white;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    box-shadow: 0 6px 20px rgba(139, 115, 85, 0.3);
    transition: all 0.3s ease; /* IE fallback */
    transition: var(--transition);
    cursor: pointer;
    text-decoration: none;
}

.floating-btn:hover {
    background: linear-gradient(135deg, #a08654, #8b7355); /* IE fallback */
    background: linear-gradient(135deg, var(--secondary-hover), var(--secondary-color));
    -webkit-transform: translateY(-3px);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(139, 115, 85, 0.4);
    color: white;
}

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

.line-icon {
    width: 24px;
    height: 24px;
}

/* 特殊按鈕樣式 */
.floating-btn.whatsapp {
    background: linear-gradient(135deg, #25D366, #128C7E);
}

.floating-btn.whatsapp:hover {
    background: linear-gradient(135deg, #128C7E, #25D366);
}

.floating-btn.facebook {
    background: linear-gradient(135deg, #4267B2, #365899);
}

.floating-btn.facebook:hover {
    background: linear-gradient(135deg, #365899, #4267B2);
}

.floating-btn.email {
    background: linear-gradient(135deg, #EA4335, #DB4437);
}

.floating-btn.email:hover {
    background: linear-gradient(135deg, #DB4437, #EA4335);
}

.floating-btn.phone {
    background: linear-gradient(135deg, #34A853, #0F9D58);
}

.floating-btn.phone:hover {
    background: linear-gradient(135deg, #0F9D58, #34A853);
}

/* 回到頂部按鈕 */
.back-to-top {
    position: fixed;
    right: 25px;
    bottom: 90px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: none;
    background: linear-gradient(135deg, #2c3e50, #34495e);
    color: white;
    display: none;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 6px 20px rgba(44, 62, 80, 0.25);
    transition: all 0.3s ease; /* IE fallback */
    transition: var(--transition);
    z-index: 1000;
    text-decoration: none;
}

.back-to-top.show {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
}

.back-to-top:hover {
    background: linear-gradient(135deg, #34495e, #2c3e50);
    -webkit-transform: translateY(-3px);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(44, 62, 80, 0.35);
    color: white;
}

.back-to-top i {
    font-size: 18px;
    color: white;
}

.back-to-top-text {
    font-size: 8px;
    margin-top: 2px;
    font-weight: 700;
    color: white;
}

/* 浮動購物車 */
.floating-cart {
    position: fixed;
    right: 25px;
    bottom: 160px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: none;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 6px 20px rgba(245, 87, 108, 0.3);
    transition: all 0.3s ease;
    z-index: 1000;
    text-decoration: none;
    position: relative;
}

.floating-cart:hover {
    -webkit-transform: translateY(-3px) scale(1.05);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 25px rgba(245, 87, 108, 0.4);
    color: white;
}

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

.floating-cart-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: #ff4757;
    color: white;
    border-radius: 50%;
    padding: 2px 6px;
    font-size: 10px;
    font-weight: 700;
    min-width: 18px;
    height: 18px;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(255, 71, 87, 0.4);
    -webkit-animation: badge-bounce 2s infinite;
    animation: badge-bounce 2s infinite;
    border: 2px solid white;
}

/* 浮動選單工具提示 */
.floating-btn-tooltip {
    position: absolute;
    right: 70px;
    top: 50%;
    -webkit-transform: translateY(-50%);
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    pointer-events: none;
    z-index: 1001;
}

.floating-btn-tooltip::after {
    content: '';
    position: absolute;
    left: 100%;
    top: 50%;
    -webkit-transform: translateY(-50%);
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 6px solid rgba(0, 0, 0, 0.8);
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
}

.floating-btn:hover .floating-btn-tooltip {
    opacity: 1;
    visibility: visible;
    -webkit-transform: translateY(-50%) translateX(-5px);
    transform: translateY(-50%) translateX(-5px);
}

/* 浮動選單展開/收合效果 */
.floating-menu.collapsed .floating-btn:not(:first-child) {
    opacity: 0;
    visibility: hidden;
    -webkit-transform: translateY(20px);
    transform: translateY(20px);
}

.floating-menu.expanded .floating-btn {
    opacity: 1;
    visibility: visible;
    -webkit-transform: translateY(0);
    transform: translateY(0);
}

.floating-menu-toggle {
    position: relative;
}

.floating-menu-toggle i {
    transition: transform 0.3s ease;
}

.floating-menu.expanded .floating-menu-toggle i {
    -webkit-transform: rotate(45deg);
    transform: rotate(45deg);
}

/* ==========================================================================
   動畫效果
   ========================================================================== */

@-webkit-keyframes badge-bounce {
    0%, 100% {
        -webkit-transform: scale(1);
        transform: scale(1);
    }
    50% {
        -webkit-transform: scale(1.2);
        transform: scale(1.2);
    }
}

@keyframes badge-bounce {
    0%, 100% {
        -webkit-transform: scale(1);
        transform: scale(1);
    }
    50% {
        -webkit-transform: scale(1.2);
        transform: scale(1.2);
    }
}

@-webkit-keyframes float-animation {
    0%, 100% {
        -webkit-transform: translateY(0);
        transform: translateY(0);
    }
    50% {
        -webkit-transform: translateY(-5px);
        transform: translateY(-5px);
    }
}

@keyframes float-animation {
    0%, 100% {
        -webkit-transform: translateY(0);
        transform: translateY(0);
    }
    50% {
        -webkit-transform: translateY(-5px);
        transform: translateY(-5px);
    }
}

.floating-btn.animate-float {
    -webkit-animation: float-animation 3s ease-in-out infinite;
    animation: float-animation 3s ease-in-out infinite;
}

/* ==========================================================================
   響應式設計
   ========================================================================== */

/* 桌面版位置 */
@media (min-width: 1025px) {
    .floating-menu {
        right: 25px;
        /* 調整：桌面版也同步調整為 51vh */
        bottom: calc(51vh + 25px);
    }
    
    .back-to-top {
        right: 25px;
        bottom: 90px;
    }
    
    .floating-cart {
        right: 25px;
        bottom: 160px;
    }
}

/* 手機版調整 */
@media (max-width: 768px) {
    .floating-menu {
        right: 15px;
        /* 調整：手機版從 39vh 改為 59vh，同樣往下移動20vh */
        bottom: calc(59vh + 15px);
    }

    .floating-btn {
        width: 48px;
        height: 48px;
    }

    .floating-btn i {
        font-size: 16px;
    }

    .back-to-top {
        right: 15px;
        bottom: 87px;
        width: 48px;
        height: 48px;
    }

    .back-to-top i {
        font-size: 14px;
    }
    
    .back-to-top-text {
        font-size: 7px;
    }
    
    .floating-cart {
        right: 15px;
        bottom: 140px;
        width: 48px;
        height: 48px;
    }
    
    .floating-cart i {
        font-size: 16px;
    }
    
    .floating-cart-badge {
        font-size: 9px;
        min-width: 16px;
        height: 16px;
        padding: 1px 5px;
    }
    
    .floating-btn-tooltip {
        right: 60px;
        font-size: 11px;
        padding: 6px 10px;
    }
}

/* 小屏手機調整 */
@media (max-width: 480px) {
    .floating-menu {
        right: 10px;
        /* 調整：小屏手機版從 42vh 改為 62vh */
        bottom: calc(62vh + 10px);
    }

    .floating-btn {
        width: 44px;
        height: 44px;
        gap: 12px;
    }

    .floating-btn i {
        font-size: 14px;
    }

    .back-to-top {
        right: 10px;
        bottom: 85px;
        width: 44px;
        height: 44px;
    }

    .back-to-top i {
        font-size: 12px;
    }
    
    .back-to-top-text {
        font-size: 6px;
    }
    
    .floating-cart {
        right: 10px;
        bottom: 135px;
        width: 44px;
        height: 44px;
    }
    
    .floating-cart i {
        font-size: 14px;
    }
    
    .floating-cart-badge {
        font-size: 8px;
        min-width: 14px;
        height: 14px;
        padding: 1px 4px;
        top: -3px;
        right: -3px;
    }
    
    .floating-btn-tooltip {
        display: none; /* 小屏幕隱藏工具提示 */
    }
}

/* 超小屏調整 */
@media (max-width: 360px) {
    .floating-menu {
        right: 8px;
    }

    .back-to-top {
        right: 8px;
    }
    
    .floating-cart {
        right: 8px;
    }
}

/* 高對比度模式支援 */
@media (prefers-contrast: high) {
    .floating-btn,
    .back-to-top,
    .floating-cart {
        border: 2px solid white;
    }
    
    .floating-btn-tooltip {
        border: 1px solid white;
    }
}

/* 聚焦狀態增強 */
.floating-btn:focus,
.back-to-top:focus,
.floating-cart:focus {
    outline: 2px solid #3b82f6; /* IE fallback */
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* 減少動畫設定 */
@media (prefers-reduced-motion: reduce) {
    .floating-btn,
    .back-to-top,
    .floating-cart,
    .floating-cart-badge {
        -webkit-animation: none !important;
        animation: none !important;
        transition-duration: 0.01ms !important;
    }
}

/* 列印時隱藏 */
@media print {
    .floating-menu,
    .back-to-top,
    .floating-cart {
        display: none !important;
    }
}

/* 深色模式支援 */
@media (prefers-color-scheme: dark) {
    .floating-btn-tooltip {
        background: rgba(255, 255, 255, 0.9);
        color: #1f2937;
    }
    
    .floating-btn-tooltip::after {
        border-left-color: rgba(255, 255, 255, 0.9);
    }
}