:root {
    --primary-color: #ffc20b;
    --secondary-color: #2980b9;
    --background-color: #f5f6fa;
    --text-color: #2d3436;
    --border-color: #dcdde1;
}

body {
    font-family: 'Microsoft JhengHei', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--primary-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    box-sizing: border-box;
}

.logo-container {
    text-align: center;
    margin: 40px 0;
}

.logo-container img {
    max-width: 200px;
    height: auto;
}

.form-container {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
}

.input-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

input[type="url"] {
    flex: 1;
    min-width: 200px;
}

select#expiry {
    width: auto;
    min-width: 120px;
}

button {
    background-color: #000;
    color: #fff;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s ease;
}

button:hover {
    background-color: #333;
    transform: translateY(-1px);
}

.url-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 30px;
    background-color: var(--bg-color);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.url-table th,
.url-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

.url-table th {
    background-color: #f5f5f5;
    font-weight: bold;
}

.url-table tr:hover {
    background-color: #f8f8f8;
}

.delete-btn {
    background-color: #ff4444;
    padding: 8px 16px;
}

.delete-btn:hover {
    background-color: #cc0000;
}

footer {
    text-align: center;
    padding: 20px;
    margin-top: auto;
    color: var(--text-color);
    font-size: 14px;
}

/* 添加載入動畫 */
.loading {
    display: none;
    text-align: center;
    padding: 20px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 響應式設計 */
@media (max-width: 1024px) {
    .container {
        padding: 15px;
    }
    
    .url-table th,
    .url-table td {
        padding: 10px;
    }
}

@media (max-width: 768px) {
    .input-group {
        flex-direction: column;
    }
    
    input[type="url"],
    select#expiry,
    button[type="submit"] {
        width: 100%;
    }
    
    .url-table {
        font-size: 14px;
    }
    
    /* 在手機版隱藏某些列 */
    .url-table .original-url {
        max-width: 150px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 10px;
    }
    
    /* 調整表格顯示方式 */
    .url-table thead {
        display: none;
    }
    
    .url-table tr {
        display: block;
        margin-bottom: 15px;
        border: 1px solid var(--border-color);
        border-radius: 4px;
    }
    
    .url-table td {
        display: block;
        text-align: right;
        padding: 8px;
        position: relative;
    }
    
    .url-table td::before {
        content: attr(data-label);
        float: left;
        font-weight: bold;
    }
}

.short-url {
    color: #3498db;
    text-decoration: none;
    transition: color 0.3s ease;
}

.short-url:hover {
    color: #2980b9;
    text-decoration: underline;
}

.short-url::after {
    content: '點擊複製';
    position: absolute;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.short-url:hover::after {
    opacity: 1;
}

.message {
    opacity: 0;
    transform: translateY(-20px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.message.show {
    opacity: 1;
    transform: translateY(0);
}

.message.success {
    background-color: #28a745;
}

.message.error {
    background-color: #dc3545;
}

/* Toast 提示訊息 */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 12px 24px;
    background-color: #333;
    color: white;
    border-radius: 4px;
    opacity: 0;
    transform: translateY(100%);
    transition: all 0.3s ease;
    z-index: 1000;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast.success {
    background-color: #2ecc71;
}

.toast.error {
    background-color: #e74c3c;
}

.toast.info {
    background-color: #3498db;
}

/* 按鈕樣式 */
.copy-btn {
    background: none;
    border: none;
    color: #3498db;
    cursor: pointer;
    padding: 5px 8px;
    margin-left: 5px;
    transition: all 0.3s ease;
    border-radius: 4px;
}

.copy-btn:hover {
    background-color: #f0f0f0;
    color: #2980b9;
}

.copy-btn:active {
    transform: scale(0.95);
}

/* Modal 樣式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1000;
}

.modal-content {
    background-color: #fff;
    margin: 15% auto;
    padding: 20px;
    border-radius: 8px;
    width: 350px;
    text-align: center;
    position: relative;
}

#qrcode {
    margin: 20px 0;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

#qrcode img {
    max-width: 100%;
    height: auto;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.close {
    position: absolute;
    right: 15px;
    top: 10px;
    font-size: 24px;
    cursor: pointer;
}

.download-qr {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.download-qr:hover {
    background-color: #2980b9;
}

/* 表格改進 */
.table-container {
    overflow-x: auto;
    margin: 20px 0;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.url-table {
    width: 100%;
    border-collapse: collapse;
}

.url-table th,
.url-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.url-table th {
    background-color: #f8f9fa;
    font-weight: 600;
}

/* 使用者面板 */
.user-panel {
    text-align: right;
    padding: 10px;
    margin-bottom: 20px;
}

.logout-btn {
    padding: 5px 10px;
    background-color: #e74c3c;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    margin-left: 10px;
}