/**
 * 地區選擇器樣式 (增強版)
 * 現代化設計，支援深色模式、響應式和無障礙功能
 * @version 3.0
 * @author ECSHOP Taiwan
 */

/* ========================================== */
/* 變數定義 */
/* ========================================== */
:root {
    /* 顏色系統 */
    --region-primary: #5e72e4;
    --region-primary-hover: #4c63d2;
    --region-primary-light: rgba(94, 114, 228, 0.1);
    --region-secondary: #f5365c;
    --region-secondary-hover: #ec0c38;
    --region-secondary-light: rgba(245, 54, 92, 0.1);
    --region-success: #2dce89;
    --region-warning: #fb6340;
    --region-info: #11cdef;
    --region-dark: #172b4d;
    --region-gray: #8898aa;
    --region-gray-light: #adb5bd;
    --region-light: #f6f9fc;
    --region-white: #ffffff;
    --region-border: #e9ecef;
    
    /* 陰影系統 */
    --region-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --region-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --region-shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
    
    /* 動畫和過渡 */
    --region-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --region-transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* 佈局 */
    --region-radius: 8px;
    --region-radius-sm: 4px;
    --region-radius-lg: 12px;
    --region-spacing: 1rem;
    --region-spacing-sm: 0.5rem;
    --region-spacing-lg: 1.5rem;
}

/* 深色模式 */
@media (prefers-color-scheme: dark) {
    :root {
        --region-primary: #7c88e5;
        --region-primary-hover: #8e99e8;
        --region-secondary: #f66;
        --region-dark: #f6f9fc;
        --region-gray: #cbd5e0;
        --region-light: #1a202c;
        --region-white: #2d3748;
        --region-border: #4a5568;
        --region-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    }
}

/* ========================================== */
/* 基礎樣式重置 */
/* ========================================== */
.region-selector *,
.region-search-wrapper *,
.region-hot-wrapper * {
    box-sizing: border-box;
}

/* ========================================== */
/* 地址管理頁面容器樣式 */
/* ========================================== */
.tab_able_box {
    background: var(--region-white);
    border-radius: var(--region-radius-lg);
    box-shadow: var(--region-shadow);
    margin-bottom: 2rem;
    overflow: hidden;
}

.tab_able_box .hd {
    padding: var(--region-spacing-lg);
    border-bottom: 1px solid var(--region-border);
    background: var(--region-light);
}

.tab_able_box .hd h3 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--region-dark);
}

.tab_able_box .bd {
    padding: var(--region-spacing-lg);
}

/* ========================================== */
/* 資料表格樣式 */
/* ========================================== */
.data_table {
    width: 100%;
    border-collapse: collapse;
}

.data_table th {
    text-align: right;
    padding: 0.75rem 1rem;
    font-weight: 500;
    color: var(--region-gray);
    width: 150px;
    vertical-align: top;
}

.data_table td {
    padding: 0.75rem 1rem;
}

.data_table tr.even {
    background-color: var(--region-light);
}

.data_table tr:hover {
    background-color: var(--region-light);
    transition: var(--region-transition-fast);
}

/* ========================================== */
/* 地區選擇器核心樣式 */
/* ========================================== */
.region-selector {
    display: flex;
    gap: var(--region-spacing);
    flex-wrap: wrap;
    align-items: center;
    margin-bottom: var(--region-spacing);
}

/* 選單樣式 */
.region-selector select,
.region-select {
    flex: 1;
    min-width: 150px;
    padding: 0.75rem 2.5rem 0.75rem 1rem;
    font-size: 0.875rem;
    font-weight: 400;
    line-height: 1.5;
    color: var(--region-dark);
    background-color: var(--region-white);
    background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none'%3E%3Cpath d='M2 5l6 6 6-6' stroke='%238898aa' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 16px;
    border: 2px solid var(--region-border);
    border-radius: var(--region-radius);
    transition: var(--region-transition);
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    cursor: pointer;
}

.region-selector select:hover,
.region-select:hover {
    border-color: var(--region-primary);
    background-color: var(--region-light);
}

.region-selector select:focus,
.region-select:focus {
    outline: none;
    border-color: var(--region-primary);
    box-shadow: 0 0 0 3px var(--region-primary-light);
}

.region-selector select:disabled,
.region-select:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    background-color: var(--region-light);
}

/* 更新中狀態 */
.region-selector select.updating,
.region-select.updating {
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* ========================================== */
/* 搜索功能樣式 */
/* ========================================== */
.region-search-wrapper {
    position: relative;
    width: 100%;
    max-width: 400px;
    margin-bottom: var(--region-spacing);
}

.region-search-input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    font-size: 0.875rem;
    color: var(--region-dark);
    background-color: var(--region-white);
    background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' fill='none' stroke='%238898aa'%3E%3Ccircle cx='11' cy='11' r='8' stroke-width='2'/%3E%3Cpath d='M21 21l-4.35-4.35' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: left 0.75rem center;
    background-size: 20px;
    border: 2px solid var(--region-border);
    border-radius: var(--region-radius);
    transition: var(--region-transition);
}

.region-search-input:focus {
    outline: none;
    border-color: var(--region-primary);
    box-shadow: 0 0 0 3px var(--region-primary-light);
    background-color: var(--region-white);
}

.region-search-input::placeholder {
    color: var(--region-gray-light);
}

/* 搜索結果容器 */
.region-search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-top: 0.5rem;
    background: var(--region-white);
    border: 1px solid var(--region-border);
    border-radius: var(--region-radius);
    box-shadow: var(--region-shadow-lg);
    max-height: 300px;
    overflow-y: auto;
    display: none;
    z-index: 1000;
    animation: slideDown 0.2s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 搜索結果項目 */
.search-result-item {
    padding: 0.75rem 1rem;
    cursor: pointer;
    transition: var(--region-transition-fast);
    border-bottom: 1px solid var(--region-border);
    position: relative;
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-item:hover,
.search-result-item.highlighted {
    background-color: var(--region-primary-light);
}

.search-result-item.highlighted::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background-color: var(--region-primary);
}

/* 搜索結果內容 */
.result-name {
    font-weight: 500;
    margin-bottom: 0.25rem;
    color: var(--region-dark);
}

.result-name mark {
    background-color: var(--region-warning);
    color: white;
    padding: 0 0.25em;
    border-radius: 2px;
}

.result-path {
    font-size: 0.75rem;
    color: var(--region-gray);
}

.search-result-item.highlighted .result-path {
    color: var(--region-gray);
}

/* 搜索狀態 */
.search-loading,
.search-error,
.no-results {
    padding: 1.5rem;
    text-align: center;
    color: var(--region-gray);
}

.search-error {
    color: var(--region-secondary);
}

/* ========================================== */
/* 熱門地區樣式 */
/* ========================================== */
.region-hot-wrapper {
    display: flex;
    align-items: center;
    gap: var(--region-spacing);
    margin-bottom: var(--region-spacing);
    flex-wrap: wrap;
}

.region-hot-label {
    font-size: 0.875rem;
    color: var(--region-gray);
    font-weight: 500;
}

.region-hot-list {
    display: flex;
    gap: var(--region-spacing-sm);
    flex-wrap: wrap;
}

.region-hot-btn {
    padding: 0.375rem 0.75rem;
    background: transparent;
    border: 2px solid var(--region-border);
    border-radius: var(--region-radius-sm);
    color: var(--region-gray);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--region-transition-fast);
    white-space: nowrap;
}

.region-hot-btn:hover {
    border-color: var(--region-primary);
    color: var(--region-primary);
    background-color: var(--region-primary-light);
    transform: translateY(-1px);
}

.region-hot-btn:active {
    transform: translateY(0);
}

.region-hot-btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--region-primary-light);
}

/* ========================================== */
/* 載入狀態樣式 */
/* ========================================== */

/* 載入中狀態 */
.region-selector select.loading,
.region-select.loading {
    background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%235e72e4'%3E%3Cstyle%3E@keyframes spin{to{transform:rotate(360deg)}}%3C/style%3E%3Cg style='transform-origin:center;animation:spin 1s linear infinite'%3E%3Ccircle cx='12' cy='12' r='10' stroke-width='3' stroke-dasharray='15.7 47.1' stroke-linecap='round'/%3E%3C/g%3E%3C/svg%3E");
    background-position: right 0.75rem center;
    background-size: 20px;
}

/* 錯誤狀態 */
.region-selector select.error,
.region-select.error {
    border-color: var(--region-secondary);
    background-color: var(--region-secondary-light);
}

.region-selector select.error:focus,
.region-select.error:focus {
    box-shadow: 0 0 0 3px rgba(245, 54, 92, 0.2);
}

/* ========================================== */
/* 表單元素樣式 */
/* ========================================== */
.form-input {
    width: 100%;
    max-width: 400px;
    padding: 0.5rem 0.75rem;
    border: 2px solid var(--region-border);
    border-radius: var(--region-radius-sm);
    font-size: 0.875rem;
    transition: var(--region-transition);
    background-color: var(--region-white);
    color: var(--region-dark);
}

.form-input:focus {
    outline: none;
    border-color: var(--region-primary);
    box-shadow: 0 0 0 3px var(--region-primary-light);
}

.form-input:invalid {
    border-color: var(--region-secondary);
}

/* 欄位提示 */
.field-notice {
    display: block;
    margin-top: 0.25rem;
    color: var(--region-secondary);
    font-size: 0.75rem;
    line-height: 1.5;
}

/* ========================================== */
/* 按鈕樣式 */
/* ========================================== */
.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--region-radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--region-transition);
    text-decoration: none;
    display: inline-block;
    margin-right: 0.5rem;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::before {
    width: 300px;
    height: 300px;
}

.btn-success {
    background: var(--region-success);
    color: white;
}

.btn-success:hover {
    background: #28a86f;
    transform: translateY(-2px);
    box-shadow: var(--region-shadow);
}

.btn-danger {
    background: var(--region-secondary);
    color: white;
}

.btn-danger:hover {
    background: var(--region-secondary-hover);
    transform: translateY(-2px);
    box-shadow: var(--region-shadow);
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(94, 114, 228, 0.3);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* ========================================== */
/* 標題樣式 */
/* ========================================== */
.title {
    margin: 1.5rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--region-border);
    position: relative;
}

.title::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 50px;
    height: 2px;
    background: var(--region-primary);
}

.title span {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--region-dark);
}

/* ========================================== */
/* 工具提示 */
/* ========================================== */
.region-tooltip {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-bottom: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: var(--region-dark);
    color: white;
    font-size: 0.75rem;
    border-radius: var(--region-radius-sm);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
    z-index: 1100;
}

.region-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: var(--region-dark);
}

.region-tooltip.show {
    opacity: 1;
}

/* ========================================== */
/* 自訂卷軸 */
/* ========================================== */
.region-search-results::-webkit-scrollbar {
    width: 8px;
}

.region-search-results::-webkit-scrollbar-track {
    background: var(--region-light);
    border-radius: var(--region-radius);
}

.region-search-results::-webkit-scrollbar-thumb {
    background: var(--region-gray-light);
    border-radius: var(--region-radius);
    transition: var(--region-transition);
}

.region-search-results::-webkit-scrollbar-thumb:hover {
    background: var(--region-gray);
}

/* ========================================== */
/* 動畫效果 */
/* ========================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.error-shake {
    animation: shake 0.5s ease-in-out;
}

/* 載入動畫 */
.region-loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--region-light);
    border-radius: 50%;
    border-top-color: var(--region-primary);
    animation: spin 0.8s linear infinite;
}

/* ========================================== */
/* 無障礙功能 */
/* ========================================== */

/* 焦點可見性 */
.region-selector *:focus-visible {
    outline: 2px solid var(--region-primary);
    outline-offset: 2px;
}

/* 螢幕閱讀器專用 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* 高對比模式 */
@media (prefers-contrast: high) {
    .region-selector select,
    .region-search-input {
        border-width: 3px;
    }
    
    .btn {
        border: 2px solid currentColor;
    }
}

/* 減少動態效果 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

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

/* 平板尺寸 */
@media (max-width: 768px) {
    :root {
        --region-spacing: 0.75rem;
        --region-spacing-sm: 0.375rem;
        --region-spacing-lg: 1rem;
    }
    
    .data_table th {
        display: block;
        text-align: left;
        width: auto;
        padding-bottom: 0.25rem;
        font-size: 0.875rem;
    }
    
    .data_table td {
        display: block;
        padding-top: 0;
    }
    
    .region-selector {
        flex-direction: column;
        align-items: stretch;
    }
    
    .region-selector select,
    .region-select {
        width: 100%;
        min-width: auto;
        display: block !important;
        margin-bottom: var(--region-spacing-sm);
    }
    
    .region-search-wrapper {
        max-width: 100%;
    }
    
    .region-hot-wrapper {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .form-input {
        max-width: 100%;
    }
}

/* 手機尺寸 */
@media (max-width: 480px) {
    .tab_able_box .hd h3 {
        font-size: 1.125rem;
    }
    
    .region-hot-list {
        width: 100%;
        justify-content: space-between;
    }
    
    .region-hot-btn {
        flex: 1 0 calc(50% - 0.25rem);
        text-align: center;
    }
    
    .btn {
        display: block;
        width: 100%;
        margin-bottom: var(--region-spacing-sm);
    }
}

/* ========================================== */
/* 列印樣式 */
/* ========================================== */
@media print {
    .region-search-wrapper,
    .region-hot-wrapper,
    .btn-danger {
        display: none !important;
    }
    
    .region-selector select {
        border: 1px solid #000;
        background-image: none;
    }
}

/* ========================================== */
/* 修復隱藏選單的樣式（重要） */
/* ========================================== */

/* 強制顯示省市區選單 */
select[id^="selProvinces_"],
select[id^="selCities_"],
select[id^="selDistricts_"] {
    display: inline-block !important;
    visibility: visible !important;
}

/* 隱藏國家選單 */
select[id^="selCountries_"] {
    display: none !important;
}

/* 覆蓋內聯樣式 */
.region-selector select[style*="display: none"] {
    display: inline-block !important;
}

.region-selector select[style*="visibility: hidden"] {
    visibility: visible !important;
}

/* 區域選單在沒有選項時隱藏 */
select[id^="selDistricts_"]:empty,
select[id^="selDistricts_"][data-empty="true"] {
    display: none !important;
}

/* ========================================== */
/* 表單狀態指示 */
/* ========================================== */
.region-selector.has-error select {
    border-color: var(--region-secondary);
}

.region-selector.has-success select {
    border-color: var(--region-success);
}

.region-status-message {
    display: none;
    margin-top: var(--region-spacing-sm);
    padding: 0.5rem;
    border-radius: var(--region-radius-sm);
    font-size: 0.8125rem;
}

.region-status-message.error {
    display: block;
    background-color: var(--region-secondary-light);
    color: var(--region-secondary);
}

.region-status-message.success {
    display: block;
    background-color: rgba(45, 206, 137, 0.1);
    color: var(--region-success);
}