/* ===== 核心變數和基礎樣式 ===== */
:root {
    --primary-color: #1b6ec2;
    --primary-hover: #1861ac;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --border-radius: 0.375rem;
    --box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --box-shadow-lg: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    /* z-index 層級定義 */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-toast: 1080;
    --z-chat: 1090;
    --z-custom-dropdown: 1100;
}

/* 全局樣式優化 */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: #f8f9fa;
    overflow-x: hidden;
}

/* 主內容區域 */
main {
    min-height: calc(100vh - 140px);
    padding: 2rem 0;
}

.container {
    max-width: 1200px;
}

/* 按鈕樣式優化 */
.btn {
    border-radius: var(--border-radius);
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: all 0.3s ease;
}

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

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

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

/* 卡片樣式 */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: all 0.3s ease;
}

    .card:hover {
        box-shadow: var(--box-shadow-lg);
        transform: translateY(-2px);
    }

.card-header {
    border-bottom: 1px solid rgba(0, 0, 0, 0.125);
    background-color: rgba(0, 0, 0, 0.03);
}

/* 表格樣式 */
.table {
    border-radius: var(--border-radius);
    overflow: hidden;
}

    .table th {
        background-color: var(--light-color);
        border-color: #dee2e6;
        font-weight: 600;
        border-top: none;
        color: #495057;
    }

.table-hover tbody tr:hover {
    background-color: rgba(27, 110, 194, 0.05);
}

.table > tbody > tr:hover {
    background-color: rgba(0, 123, 255, 0.1);
}

/* 表單樣式 */
.form-control, .form-select {
    border-radius: var(--border-radius);
    border: 2px solid #e9ecef;
    transition: all 0.3s ease;
}

    .form-control:focus, .form-select:focus {
        border-color: var(--primary-color);
        box-shadow: 0 0 0 0.2rem rgba(27, 110, 194, 0.25);
    }

    .form-control:read-only {
        background-color: #f8f9fa;
        opacity: 1;
    }

    .form-control.is-invalid, .form-select.is-invalid {
        border-color: #dc3545;
    }

    .form-control.is-valid, .form-select.is-valid {
        border-color: #198754;
    }

.form-switch .form-check-input:checked {
    background-color: #198754;
    border-color: #198754;
}

.form-check {
    margin-bottom: 0.5rem;
}

.form-check-label {
    cursor: pointer;
}

/* 徽章樣式 */
.badge {
    border-radius: var(--border-radius);
    font-weight: 500;
    font-size: 0.75rem;
    padding: 0.4em 0.6em;
}

/* 載入動畫 */
.loading {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    z-index: 9999;
}

.loading-spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.spinner-border {
    width: 2rem;
    height: 2rem;
}

.spinner-border-sm {
    width: 1rem;
    height: 1rem;
}

/* 進度條 */
.progress {
    height: 8px;
}

/* 可及性改善 */
.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;
}

/* 必填欄位標記 */
.required::after {
    content: " *";
    color: #dc3545;
}

/* 輸入組樣式 */
.input-group .btn {
    border-left: none;
}

/* 狀態指示器 */
.status-indicator {
    display: inline-block;
    width: 0.75rem;
    height: 0.75rem;
    border-radius: 50%;
    margin-right: 0.5rem;
}

/* 頭像樣式 */
.avatar-sm {
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: #1b6ec2;
    color: white;
    font-weight: 600;
    font-size: 0.875rem;
}

.avatar-lg {
    width: 64px;
    height: 64px;
}

.avatar-title {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 600;
}

/* 自訂滾動條 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

    ::-webkit-scrollbar-thumb:hover {
        background: var(--primary-hover);
    }

.card-body::-webkit-scrollbar {
    width: 8px;
}

.card-body::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

.card-body::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 10px;
}

    .card-body::-webkit-scrollbar-thumb:hover {
        background: #555;
    }

/* 動畫效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

@keyframes slideInUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }

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

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

.slide-in-up {
    animation: slideInUp 0.3s ease-out;
}

/* 按鈕組樣式 */
.btn-group .btn {
    border-radius: 0.375rem;
    margin-right: 2px;
}

    .btn-group .btn:last-child {
        margin-right: 0;
    }

/* 按鈕 hover 效果增強 */
.btn-outline-primary:hover,
.btn-outline-warning:hover,
.btn-outline-info:hover,
.btn-outline-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    transition: all 0.2s ease;
}

/* 驗證樣式代碼檢查 */
.code-checking {
    color: #ffc107;
}

.code-available {
    color: #28a745;
}

.code-unavailable {
    color: #dc3545;
}

/* 頁腳樣式 */
.footer {
    background-color: var(--dark-color);
    color: white;
    padding: 1rem 0;
    margin-top: auto;
}

/*修正選單*/
.dropdown,
.btn-group {
    position: relative;
}