/**
 * Lahochi System - Component Styles
 * 可重複使用的組件：卡片、按鈕、表單、Modal 等
 */

/* ========================================
   卡片組件
   ======================================== */

.card {
    background-color: var(--color-bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-5);
    margin-bottom: var(--spacing-6);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card-header {
    font-size: var(--font-size-2xl);  /* 從 xl(20px) 放大到 2xl(24px) */
    font-weight: var(--font-weight-bold);  /* 加粗 */
    margin-bottom: var(--spacing-4);
    color: var(--color-primary);
    border-bottom: 2px solid var(--color-border-light);
    padding-bottom: var(--spacing-3);
}

/* 首頁卡片標題特別放大 */
.page-home .card-header {
    font-size: var(--font-size-3xl);  /* 再放大一級到 3xl(30px) */
}

.card-body {
    color: var(--color-text-secondary);
}

.card-footer {
    margin-top: var(--spacing-4);
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--color-border-light);
}

/* 使用者卡片 */
.user-card {
    text-align: center;
    cursor: pointer;
}

.user-card-avatar {
    width: 100px;
    height: 100px;
    border-radius: var(--radius-full);
    object-fit: cover;
    margin: 0 auto var(--spacing-3);
    border: 3px solid var(--color-primary-light);
}

.user-card-name {
    font-size: var(--font-size-xl);  /* 從 lg(18px) 放大到 xl(20px) */
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-2);
}

.user-card-location {
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);  /* 從 sm(14px) 放大到 base(16px) */
}

/* 使用者詳細資料 Modal */
.user-detail-container {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-4);
}

@media (max-width: 767px) {
    .user-detail-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

.user-detail-photo {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.user-detail-avatar {
    width: 180px;
    height: 180px;
    border-radius: var(--radius-lg);
    object-fit: cover;
    border: 4px solid var(--color-primary-light);
    box-shadow: var(--shadow-md);
}

.user-detail-no-photo {
    width: 180px;
    height: 180px;
    border-radius: var(--radius-lg);
    border: 4px solid var(--color-border);
    background-color: var(--color-bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    text-align: center;
    padding: var(--spacing-4);
}

@media (max-width: 767px) {
    .user-detail-avatar {
        width: 150px;
        height: 150px;
    }

    .user-detail-no-photo {
        width: 150px;
        height: 150px;
    }
}

.user-detail-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.detail-row {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: var(--spacing-3);
    padding: var(--spacing-2) 0;
    border-bottom: 1px solid var(--color-border-light);
}

@media (max-width: 767px) {
    .detail-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-1);
    }
}

.detail-row-full {
    padding: var(--spacing-3) 0;
    border-bottom: 1px solid var(--color-border-light);
}

.detail-label {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
}

.detail-value {
    color: var(--color-text-primary);
}

.detail-value a {
    color: var(--color-primary);
    text-decoration: none;
}

.detail-value a:hover {
    text-decoration: underline;
}

/* 課程卡片 */
.course-card {
    position: relative;
    overflow: visible;  /* 讓內容可以正常顯示 */
}

/* 課程卡片中的徽章 - 預設在標題上方 */
.course-card .course-type-badge {
    position: static;  /* 移除絕對定位 */
    margin-bottom: var(--spacing-3);
    display: inline-block;
}

/* 只有大螢幕桌面版才使用右上角定位 */
@media (min-width: 1200px) {
    .course-card .course-type-badge {
        position: absolute;
        top: var(--spacing-4);
        right: var(--spacing-4);
        margin-bottom: 0;
    }
}

/* ========================================
   課程類型徽章 - 統一樣式
   使用淡色背景 + 深色文字風格
   ======================================== */

/* 基礎樣式 */
.course-type-badge {
    display: inline-block;
    padding: 0.4rem 0.9rem;  /* 增加內距 */
    border-radius: 20px;
    font-size: 0.95rem;  /* 從 0.8rem 放大到 0.95rem */
    font-weight: 600;
    white-space: nowrap;
    line-height: 1.4;
    border: 1px solid transparent;
}

/* 一日課 - 藍色系 */
.course-type-badge.badge-one_day {
    background-color: #e3f2fd;
    color: #1565c0;
    border-color: #90caf9;
}

/* 導師課 - 紫色系 */
.course-type-badge.badge-facilitator {
    background-color: #f3e5f5;
    color: #7b1fa2;
    border-color: #ce93d8;
}

/* 應用課 - 橘色系 */
.course-type-badge.badge-application {
    background-color: #fff3e0;
    color: #e65100;
    border-color: #ffcc80;
}

/* 介紹課 - 綠色系 */
.course-type-badge.badge-intro {
    background-color: #e8f5e9;
    color: #2e7d32;
    border-color: #a5d6a7;
}

/* 預設 - 主色系 */
.course-type-badge.badge-primary {
    background-color: #e3f0f7;
    color: var(--color-primary);
    border-color: #90caf9;
}

.course-card-title {
    font-size: var(--font-size-xl);  /* 從 lg(18px) 放大到 xl(20px) */
    margin-bottom: var(--spacing-3);
}

.course-card-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);  /* 從 sm(14px) 放大到 base(16px) */
}

.course-card-info-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

/* ========================================
   按鈕組件
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
    text-decoration: none;
    font-size: var(--font-size-base);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    text-decoration: none;
}

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

/* 按鈕變體 */
.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-text-white);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    color: var(--color-text-white);
}

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

.btn-secondary:hover {
    background-color: #3a7ca5;
    color: var(--color-text-white);
}

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

.btn-success:hover {
    background-color: #059669;
    color: var(--color-text-white);
}

.btn-warning {
    background-color: var(--color-warning);
    color: var(--color-text-white);
}

.btn-warning:hover {
    background-color: #d97706;
    color: var(--color-text-white);
}

.btn-error {
    background-color: var(--color-error);
    color: var(--color-text-white);
}

.btn-error:hover {
    background-color: #dc2626;
    color: var(--color-text-white);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
}

.btn-outline:hover {
    background-color: var(--color-primary);
    color: var(--color-text-white);
}

/* 按鈕尺寸 */
.btn-sm {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-size-lg);
}

/* 按鈕狀態 */
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn:disabled:hover {
    transform: none;
    box-shadow: none;
}

/* Old form styles removed - merged from forms.css */

/* ========================================
   搜尋欄
   ======================================== */

.search-bar {
    display: flex;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-6);
    flex-wrap: wrap;
}

.search-input {
    flex: 1;
    min-width: 200px;
}

/* ========================================
   分頁組件
   ======================================== */

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-2);
    margin-top: var(--spacing-8);
}

.pagination-btn {
    padding: var(--spacing-2) var(--spacing-4);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-bg-white);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.pagination-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.pagination-btn.active {
    background-color: var(--color-primary);
    color: var(--color-text-white);
    border-color: var(--color-primary);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ========================================
   Modal (彈窗)
   ======================================== */

.modal-backdrop {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 9998;
    animation: fadeIn var(--transition-base);
    overflow-y: auto;
}

.modal-backdrop.active {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-4);
}

.modal {
    background-color: var(--color-bg-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp var(--transition-base);
}

.modal-header {
    padding: var(--spacing-6);
    border-bottom: 1px solid var(--color-border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
}

.modal-close {
    font-size: var(--font-size-2xl);
    cursor: pointer;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    line-height: 1;
    padding: 0;
    background: none;
    border: none;
}

.modal-close:hover {
    color: var(--color-text-primary);
}

.modal-body {
    padding: var(--spacing-6);
}

.modal-footer {
    padding: var(--spacing-6);
    border-top: 1px solid var(--color-border-light);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-3);
}

/* ========================================
   表格組件
   ======================================== */

.table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--color-bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.table thead {
    background-color: var(--color-primary);
    color: var(--color-text-white);
}

.table th {
    padding: var(--spacing-4);
    text-align: left;
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-lg);  /* 表頭放大 */
}

.table td {
    padding: var(--spacing-4);
    border-bottom: 1px solid var(--color-border-light);
    font-size: var(--font-size-base);  /* 表格內容放大 */
}

.table tbody tr:hover {
    background-color: var(--color-bg-light);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

/* 手機版表格（卡片式） */
@media (max-width: 767px) {
    .table-responsive {
        display: none;
    }

    .table-cards {
        display: block;
    }

    .table-card {
        background-color: var(--color-bg-white);
        border-radius: var(--radius-lg);
        padding: var(--spacing-5);  /* 增加內距 */
        margin-bottom: var(--spacing-4);
        box-shadow: var(--shadow-sm);
    }

    .table-card-row {
        display: flex;
        justify-content: space-between;
        padding: var(--spacing-3) 0;  /* 增加行間距 */
        border-bottom: 1px solid var(--color-border-light);
        font-size: var(--font-size-lg);  /* 放大文字 */
    }

    .table-card-row:last-child {
        border-bottom: none;
    }

    .table-card-label {
        font-weight: var(--font-weight-semibold);
        color: var(--color-text-secondary);
        font-size: var(--font-size-lg);  /* 與內容文字同樣大小 */
    }
}

@media (min-width: 768px) {
    .table-cards {
        display: none;
    }
}

/* ========================================
   標籤 (Badges)
   ======================================== */

.badge {
    display: inline-block;
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
}

.badge-primary {
    background-color: var(--color-primary);
    color: white;
}

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

.badge-warning {
    background-color: var(--color-warning);
    color: white;
}

.badge-error {
    background-color: var(--color-error);
    color: white;
}

/* ========================================
   分頁標籤 (Tabs)
   ======================================== */

.tabs {
    display: flex;
    gap: var(--spacing-2);
    border-bottom: 2px solid var(--color-border-light);
    margin-bottom: var(--spacing-6);
    overflow-x: auto;
}

.tab {
    padding: var(--spacing-3) var(--spacing-6);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all var(--transition-fast);
    white-space: nowrap;
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
}

.tab:hover {
    color: var(--color-primary);
}

.tab.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

/* ========================================
   提示訊息 (Alerts)
   ======================================== */

.alert {
    padding: var(--spacing-4);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-4);
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border-left: 4px solid var(--color-success);
}

.alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border-left: 4px solid var(--color-error);
}

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
    border-left: 4px solid var(--color-warning);
}

.alert-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border-left: 4px solid var(--color-info);
}

/* ========================================
   動畫
   ======================================== */

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.loading-spinner {
    border: 3px solid var(--color-border-light);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

/* ========================================
   通知 Toast
   ======================================== */

.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    min-width: 300px;
    max-width: 500px;
    padding: 1rem 1.5rem;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    gap: 1rem;
    z-index: 10000;
    opacity: 0;
    transform: translateX(400px);
    transition: all 0.3s ease;
}

/* ========================================
   Merged from forms.css
   ======================================== */

/**
 * Lahochi System - Forms Component Library
 * 完整的表單組件樣式庫
 */

/* ========================================
   1. 表單容器和布局
   ======================================== */

.form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-5);
}

/* 兩欄布局 */
.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-4);
}

/* 三欄布局 */
.form-row-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-4);
}

/* 表單群組 */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

/* 全寬表單群組 */
.form-group-full {
    grid-column: 1 / -1;
}

/* 內聯表單群組 */
.form-group-inline {
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-3);
}

/* ========================================
   2. 表單標籤
   ======================================== */

.form-label {
    display: block;
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-2);
    line-height: var(--line-height-normal);
}

/* 必填標記 */
.form-label-required::after,
.form-label .required::after {
    content: " *";
    color: var(--color-error);
    font-weight: var(--font-weight-bold);
}

/* 標籤中的圖示 */
.form-label i {
    margin-right: var(--spacing-2);
    color: var(--color-primary);
    width: 18px;
    text-align: center;
}

/* 小標籤 */
.form-label-sm {
    font-size: var(--font-size-sm);
}

/* 大標籤 */
.form-label-lg {
    font-size: var(--font-size-lg);
}

/* ========================================
   3. 輸入框 (Input)
   ======================================== */

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-bg-white);
    font-size: var(--font-size-base);
    font-family: var(--font-family-base);
    color: var(--color-text-primary);
    line-height: var(--line-height-normal);
    transition: all var(--transition-fast);
}

.form-input::placeholder {
    color: var(--color-text-light);
    opacity: 0.7;
}

.form-input:hover {
    border-color: var(--color-primary-light);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    background-color: var(--color-bg-white);
    box-shadow: 0 0 0 3px rgba(44, 95, 141, 0.1);
}

.form-input:disabled,
.form-input[readonly] {
    background-color: var(--color-bg-light);
    color: var(--color-text-secondary);
    cursor: not-allowed;
    opacity: 0.6;
}

/* 小尺寸輸入框 */
.form-input-sm {
    padding: 0.5rem 0.75rem;
    font-size: var(--font-size-sm);
}

/* 大尺寸輸入框 */
.form-input-lg {
    padding: 1rem 1.25rem;
    font-size: var(--font-size-lg);
}

/* ========================================
   4. 下拉選單 (Select) ⭐ 核心組件
   ======================================== */

.form-select {
    /* 尺寸和間距 */
    width: 100%;
    padding: 0.75rem 2.5rem 0.75rem 1rem;

    /* 邊框和圓角 */
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);

    /* 背景 */
    background-color: var(--color-bg-white);

    /* 自訂下拉箭頭（SVG） */
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='%232C5F8D' d='M8 11L3 6h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1rem;

    /* 文字 */
    font-size: var(--font-size-base);
    font-family: var(--font-family-base);
    color: var(--color-text-primary);
    line-height: var(--line-height-normal);

    /* 移除預設樣式 */
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;

    /* 互動效果 */
    cursor: pointer;
    transition: all var(--transition-fast);
}

/* Hover 狀態 */
.form-select:hover {
    border-color: var(--color-primary-light);
    background-color: var(--color-bg-light);
}

/* Focus 狀態 */
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    background-color: var(--color-bg-white);
    box-shadow: 0 0 0 3px rgba(44, 95, 141, 0.1);
}

/* Disabled 狀態 */
.form-select:disabled {
    background-color: var(--color-bg-light);
    color: var(--color-text-secondary);
    cursor: not-allowed;
    opacity: 0.6;
    /* 箭頭也變灰 */
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='%23999999' d='M8 11L3 6h10z'/%3E%3C/svg%3E");
}

/* 小尺寸下拉選單 */
.form-select-sm {
    padding: 0.5rem 2rem 0.5rem 0.75rem;
    font-size: var(--font-size-sm);
    background-position: right 0.5rem center;
    background-size: 0.875rem;
}

/* 大尺寸下拉選單 */
.form-select-lg {
    padding: 1rem 3rem 1rem 1.25rem;
    font-size: var(--font-size-lg);
    background-position: right 1rem center;
    background-size: 1.125rem;
}

/* 選項樣式 */
.form-select option {
    padding: 0.5rem;
    background-color: var(--color-bg-white);
    color: var(--color-text-primary);
}

.form-select option:disabled {
    color: var(--color-text-secondary);
}

/* 深色背景上的下拉選單 */
.form-select-dark {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    color: var(--color-text-white);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='white' d='M8 11L3 6h10z'/%3E%3C/svg%3E");
}

.form-select-dark:hover {
    background-color: rgba(255, 255, 255, 0.15);
}

.form-select-dark option {
    background-color: var(--color-primary);
    color: var(--color-text-white);
}

/* ========================================
   5. 文字區域 (Textarea)
   ======================================== */

.form-textarea {
    width: 100%;
    min-height: 120px;
    padding: 0.75rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-bg-white);
    font-size: var(--font-size-base);
    font-family: var(--font-family-base);
    color: var(--color-text-primary);
    line-height: var(--line-height-normal);
    resize: vertical;
    transition: all var(--transition-fast);
}

.form-textarea::placeholder {
    color: var(--color-text-light);
    opacity: 0.7;
}

.form-textarea:hover {
    border-color: var(--color-primary-light);
}

.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(44, 95, 141, 0.1);
}

.form-textarea:disabled,
.form-textarea[readonly] {
    background-color: var(--color-bg-light);
    color: var(--color-text-secondary);
    cursor: not-allowed;
    opacity: 0.6;
    resize: none;
}

/* 固定高度的文字區域 */
.form-textarea-fixed {
    resize: none;
}

/* 小尺寸 */
.form-textarea-sm {
    min-height: 80px;
    padding: 0.5rem 0.75rem;
    font-size: var(--font-size-sm);
}

/* 大尺寸 */
.form-textarea-lg {
    min-height: 180px;
    padding: 1rem 1.25rem;
    font-size: var(--font-size-lg);
}

/* ========================================
   6. 複選框 (Checkbox)
   ======================================== */

.form-checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    cursor: pointer;
}

.form-checkbox input[type="checkbox"] {
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    accent-color: var(--color-primary);
}

.form-checkbox input[type="checkbox"]:hover {
    border-color: var(--color-primary-light);
}

.form-checkbox input[type="checkbox"]:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(44, 95, 141, 0.1);
}

.form-checkbox input[type="checkbox"]:disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

.form-checkbox label {
    cursor: pointer;
    user-select: none;
}

/* ========================================
   7. 單選鈕 (Radio)
   ======================================== */

.form-radio {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    cursor: pointer;
}

.form-radio input[type="radio"] {
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid var(--color-border);
    cursor: pointer;
    transition: all var(--transition-fast);
    accent-color: var(--color-primary);
}

.form-radio input[type="radio"]:hover {
    border-color: var(--color-primary-light);
}

.form-radio input[type="radio"]:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(44, 95, 141, 0.1);
}

.form-radio input[type="radio"]:disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

.form-radio label {
    cursor: pointer;
    user-select: none;
}

/* 單選鈕群組 */
.form-radio-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.form-radio-group-inline {
    flex-direction: row;
    gap: var(--spacing-5);
}

/* ========================================
   8. 開關按鈕 (Switch)
   ======================================== */

.form-switch {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    cursor: pointer;
}

.form-switch input[type="checkbox"] {
    width: 48px;
    height: 24px;
    appearance: none;
    background-color: var(--color-border-dark);
    border-radius: var(--radius-full);
    position: relative;
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.form-switch input[type="checkbox"]::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: white;
    top: 2px;
    left: 2px;
    transition: transform var(--transition-fast);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.form-switch input[type="checkbox"]:checked {
    background-color: var(--color-success);
}

.form-switch input[type="checkbox"]:checked::before {
    transform: translateX(24px);
}

.form-switch input[type="checkbox"]:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.form-switch label {
    cursor: pointer;
    user-select: none;
}

/* ========================================
   9. 表單狀態
   ======================================== */

/* 錯誤狀態 */
.form-input.error,
.form-select.error,
.form-textarea.error,
.form-input.is-invalid,
.form-select.is-invalid,
.form-textarea.is-invalid {
    border-color: var(--color-error);
    background-color: #fff5f5;
}

.form-input.error:focus,
.form-select.error:focus,
.form-textarea.error:focus {
    box-shadow: 0 0 0 3px rgba(244, 67, 54, 0.1);
}

/* 成功狀態 */
.form-input.success,
.form-select.success,
.form-textarea.success,
.form-input.is-valid,
.form-select.is-valid,
.form-textarea.is-valid {
    border-color: var(--color-success);
    background-color: #f0fff4;
}

.form-input.success:focus,
.form-select.success:focus,
.form-textarea.success:focus {
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
}

/* 警告狀態 */
.form-input.warning,
.form-select.warning,
.form-textarea.warning {
    border-color: var(--color-warning);
    background-color: #fffbf0;
}

/* ========================================
   10. 表單輔助元素
   ======================================== */

/* 說明文字 */
.form-help,
.form-hint {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: var(--spacing-1);
    font-style: italic;
    line-height: var(--line-height-normal);
}

/* 錯誤訊息 */
.form-error {
    font-size: var(--font-size-sm);
    color: var(--color-error);
    margin-top: var(--spacing-1);
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.form-error i {
    font-size: var(--font-size-xs);
}

/* 成功訊息 */
.form-success {
    font-size: var(--font-size-sm);
    color: var(--color-success);
    margin-top: var(--spacing-1);
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.form-success i {
    font-size: var(--font-size-xs);
}

/* 表單按鈕組 */
.form-actions {
    display: flex;
    gap: var(--spacing-4);
    padding-top: var(--spacing-5);
    border-top: 1px solid var(--color-border);
    justify-content: flex-end;
}

.form-actions-start {
    justify-content: flex-start;
}

.form-actions-center {
    justify-content: center;
}

.form-actions-between {
    justify-content: space-between;
}

/* 必填標記 */
.required {
    color: var(--color-error);
    font-weight: var(--font-weight-bold);
}

/* ========================================
   11. 響應式設計
   ======================================== */

/* 平板 */
@media (max-width: 1024px) {
    .form-row-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 手機 */
@media (max-width: 768px) {

    /* 所有多欄布局改為單欄 */
    .form-row,
    .form-row-3 {
        grid-template-columns: 1fr;
        gap: var(--spacing-3);
    }

    /* 表單按鈕改為垂直排列 */
    .form-actions {
        flex-direction: column;
        gap: var(--spacing-3);
    }

    .form-actions .btn {
        width: 100%;
    }

    /* 內聯單選鈕群組改為垂直 */
    .form-radio-group-inline {
        flex-direction: column;
        gap: var(--spacing-3);
    }

    /* 調整輸入框字體大小（防止自動縮放） */
    .form-input,
    .form-select,
    .form-textarea {
        font-size: 16px;
        /* iOS 防止自動縮放 */
    }
}

/* 小手機 */
@media (max-width: 480px) {

    .form-input,
    .form-select,
    .form-textarea {
        padding: 0.625rem 0.875rem;
    }

    .form-select {
        padding-right: 2rem;
    }
}

/* ========================================
   12. 列印樣式
   ======================================== */

@media print {

    .form-input,
    .form-select,
    .form-textarea {
        border: 1px solid #000;
        background: none;
        color: #000;
    }

    .form-actions {
        display: none;
    }
}

/* ========================================
   13. 可訪問性增強
   ======================================== */

/* 鍵盤焦點增強 */
.form-input:focus-visible,
.form-select:focus-visible,
.form-textarea:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* 高對比度模式支援 */
@media (prefers-contrast: high) {

    .form-input,
    .form-select,
    .form-textarea {
        border-width: 3px;
    }
}

/* 減少動畫模式支援 */
@media (prefers-reduced-motion: reduce) {

    .form-input,
    .form-select,
    .form-textarea,
    .form-switch input[type="checkbox"],
    .form-switch input[type="checkbox"]::before {
        transition: none;
    }
}

.notification.show {
    opacity: 1;
    transform: translateX(0);
}

.notification i:first-child {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.notification span {
    flex: 1;
    color: var(--color-text);
    font-size: 0.95rem;
}

.notification-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-secondary);
    padding: 0.25rem;
    font-size: 1.2rem;
    transition: color 0.2s;
}

.notification-close:hover {
    color: var(--color-text);
}

/* 通知類型 */
.notification-success {
    border-left: 4px solid #28a745;
}

.notification-success i:first-child {
    color: #28a745;
}

.notification-error {
    border-left: 4px solid #dc3545;
}

.notification-error i:first-child {
    color: #dc3545;
}

.notification-warning {
    border-left: 4px solid #ffc107;
}

.notification-warning i:first-child {
    color: #ffc107;
}

.notification-info {
    border-left: 4px solid #17a2b8;
}

.notification-info i:first-child {
    color: #17a2b8;
}

/* 手機版調整 */
@media (max-width: 768px) {
    .notification {
        top: 10px;
        right: 10px;
        left: 10px;
        min-width: auto;
        max-width: none;
    }
}