/* 全域重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Microsoft JhengHei', 'Arial', sans-serif;
}

/* 全域樣式 */
body {
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

/* 容器 */
.container {
    max-width: 1000px;
    margin: 2rem auto;
    padding: 0 1rem;
}

/* 頁頭 */
.header {
    text-align: center;
    margin-bottom: 2rem;
}

.header h1 {
    color: #2c3e50;
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.header p {
    color: #7f8c8d;
    font-size: 1rem;
}

/* 導航欄 */
.nav {
    background-color: #3498db;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.nav a {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.nav a:hover {
    background-color: #2980b9;
}

.nav a.active {
    background-color: white;
    color: #3498db;
    font-weight: bold;
}

/* 卡片 */
.card {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    padding: 2rem;
    margin-bottom: 2rem;
}

/* 表單樣式 */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
    color: #2c3e50;
}

.form-control {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

/* 按鈕樣式 */
.btn {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    text-align: center;
}

.btn-primary {
    background-color: #3498db;
    color: white;
}

.btn-primary:hover {
    background-color: #2980b9;
}

.btn-success {
    background-color: #27ae60;
    color: white;
}

.btn-success:hover {
    background-color: #219653;
}

.btn-danger {
    background-color: #e74c3c;
    color: white;
}

.btn-danger:hover {
    background-color: #c0392b;
}

.btn-group {
    display: flex;
    gap: 1rem;
    margin: 1rem 0;
}

/* 表格樣式 */
.table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

.table th, .table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.table th {
    background-color: #f8f9fa;
    color: #2c3e50;
    font-weight: bold;
}

.table tr:hover {
    background-color: #f8f9fa;
}

/* 狀態標籤 */
.status {
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: bold;
}

.status-pending {
    background-color: #fff3cd;
    color: #856404;
}

.status-approved {
    background-color: #d4edda;
    color: #155724;
}

.status-rejected {
    background-color: #f8d7da;
    color: #721c24;
}

/* 提示訊息 */
.alert {
    padding: 1rem;
    border-radius: 6px;
    margin: 1rem 0;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
}

.alert-error {
    background-color: #f8d7da;
    color: #721c24;
}

.alert-info {
    background-color: #d1ecf1;
    color: #0c5460;
}

/* 響應式設計 */
@media (max-width: 768px) {
    .nav ul {
        flex-direction: column;
        text-align: center;
    }
    
    .btn-group {
        flex-direction: column;
    }
    
    .table {
        font-size: 0.9rem;
    }
    
    .table th, .table td {
        padding: 0.7rem;
    }
    
    .card {
        padding: 1.5rem;
    }
}