/* 基本樣式 */
:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --border-radius: 12px;
    --transition: all 0.3s ease;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 8px 15px rgba(0, 0, 0, 0.15);
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f8f9fa;
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
}

/* 頁首樣式 */
.header-section {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
    padding: 2rem 0;
}

.title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.title i {
    margin-right: 0.5rem;
    font-size: 2rem;
}

.subtitle {
    font-size: 1.1rem;
    color: var(--secondary-color);
    margin-bottom: 0;
}



/* 主要內容 */
.main-content {
    padding: 2rem 0;
}

/* 卡片樣式 */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    margin-bottom: 2rem;
}

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

.card-header {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
    color: white;
    border-bottom: none;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    padding: 1.5rem;
}

.card-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin: 0;
}

.card-title i {
    margin-right: 0.5rem;
}

.card-body {
    padding: 2rem;
}

/* 表單樣式 */
.form-label {
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.form-label i {
    margin-right: 0.5rem;
    color: var(--primary-color);
}

.form-control {
    border: 2px solid #e9ecef;
    border-radius: 8px;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.form-text {
    font-size: 0.85rem;
    color: var(--secondary-color);
    margin-top: 0.25rem;
}

.form-text i {
    margin-right: 0.25rem;
}

/* 按鈕樣式 */
.btn {
    border-radius: 8px;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #0056b3, var(--primary-color));
    transform: translateY(-1px);
    box-shadow: var(--shadow-hover);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn i {
    margin-right: 0.5rem;
}

/* 載入動畫 */
.loading-card {
    animation: fadeIn 0.5s ease-in-out;
}

.loading-animation {
    position: relative;
    margin-bottom: 1rem;
}

.spinner-border {
    width: 3rem;
    height: 3rem;
    border-width: 0.3rem;
}

/* 進度條 */
.progress-container {
    max-width: 400px;
    margin: 0 auto;
}

.progress {
    height: 8px;
    border-radius: 4px;
    background: rgba(0, 123, 255, 0.1);
    overflow: hidden;
}

.progress-bar {
    background: linear-gradient(90deg, var(--primary-color), #0056b3);
    transition: width 0.6s ease;
}

.progress-text {
    font-size: 0.9rem;
    color: var(--secondary-color);
    font-weight: 500;
}



/* 結果樣式 */
.results-card {
    animation: slideUp 0.5s ease-out;
}

/* 表格樣式 */
.table {
    margin-bottom: 0;
}

.table-dark {
    background: linear-gradient(135deg, var(--dark-color), #495057);
}

.table-striped tbody tr:nth-of-type(odd) {
    background: rgba(0, 123, 255, 0.02);
}

.table-hover tbody tr:hover {
    background: rgba(0, 123, 255, 0.05);
}

.table th {
    border-top: none;
    font-weight: 600;
    padding: 1rem;
}

.table td {
    padding: 1rem;
    vertical-align: middle;
}

/* 無結果樣式 */
.no-results {
    animation: fadeIn 0.5s ease-in-out;
}

/* 動畫效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 響應式設計 */
@media (max-width: 768px) {
    .title {
        font-size: 2rem;
    }
    
    .card-body {
        padding: 1.5rem;
    }
}

@media (max-width: 576px) {
    .header-section {
        padding: 1.5rem 0;
    }
    
    .title {
        font-size: 1.8rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .card-header {
        padding: 1rem;
    }
    
    .btn-lg {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
}

/* 載入狀態下的按鈕 */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-loading {
    position: relative;
    color: transparent;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid #ffffff;
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 1s linear infinite;
}

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