/* 基础重置和字体 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #1e3c72, #2a5298, #4a69bd);
    color: #ffffff;
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 头部样式 */
.header {
    text-align: center;
    margin-bottom: 3rem;
}

.header h1 {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, #ff6b6b, #4ecdc4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0;
}

/* 主要内容区域 */
.main {
    flex: 1;
}

/* 表单容器 */
.form-container {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 2.5rem;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.input-group {
    margin-bottom: 1.5rem;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
}

.input-group input {
    width: 100%;
    padding: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.input-group input:focus {
    outline: none;
    border-color: #4ecdc4;
    box-shadow: 0 0 0 3px rgba(78, 205, 196, 0.3);
    background: rgba(255, 255, 255, 0.15);
}

.input-group input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

/* 生成按钮 */
.generate-btn {
    width: 100%;
    padding: 1.2rem 2rem;
    background: linear-gradient(45deg, #ff6b6b, #ff8e8e);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.generate-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 107, 107, 0.4);
}

.generate-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* 结果容器 */
.result-container {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 15px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.result-header h3 {
    color: #10b981;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.url-display {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.url-display input {
    flex: 1;
    padding: 1rem;
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
}

.copy-btn {
    padding: 1rem 1.5rem;
    background: #10b981;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.copy-btn:hover {
    background: #059669;
    transform: translateY(-1px);
}

.result-info p {
    margin-bottom: 0.5rem;
    color: rgba(255, 255, 255, 0.9);
}

.result-info strong {
    color: #10b981;
}

/* 错误容器 */
.error-container {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 15px;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.error-message {
    color: #ef4444;
    font-weight: 500;
}

/* 统计容器 */
.stats-container {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 2rem;
    margin-bottom: 2rem;
    text-align: center;
}

.stats-container h3 {
    margin-bottom: 1.5rem;
    color: rgba(255, 255, 255, 0.9);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: #4ecdc4;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

/* 页脚 */
.footer {
    text-align: center;
    padding: 2rem 0;
    color: rgba(255, 255, 255, 0.6);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 2rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .form-container {
        padding: 1.5rem;
    }
    
    .url-display {
        flex-direction: column;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
}

/* 加载动画 */
.btn-loading {
    display: inline-block;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.5);
}