/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* 头部样式 */
header {
    text-align: center;
    margin-bottom: 40px;
    color: white;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* 卡片样式 */
section {
    background: white;
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    transition: transform 0.2s ease;
}

section:hover {
    transform: translateY(-2px);
}

section h2 {
    color: #4a5568;
    margin-bottom: 20px;
    font-size: 1.4rem;
    border-bottom: 2px solid #e2e8f0;
    padding-bottom: 10px;
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: #4a5568;
}

input[type="text"],
select,
textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

input[type="text"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

textarea {
    min-height: 150px;
    resize: vertical;
    font-family: 'Courier New', monospace;
}

/* 按钮样式 */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #5a67d8, #6b46c1);
    transform: translateY(-1px);
}

.btn-secondary {
    background: #4a5568;
    color: white;
}

.btn-secondary:hover {
    background: #2d3748;
}

.btn-outline {
    background: transparent;
    color: #4a5568;
    border: 2px solid #e2e8f0;
}

.btn-outline:hover {
    background: #f7fafc;
    border-color: #cbd5e0;
}

.btn-danger {
    background: #e53e3e;
    color: white;
}

.btn-danger:hover {
    background: #c53030;
}

.btn-copy {
    background: #38a169;
    color: white;
    font-size: 12px;
    padding: 8px 16px;
}

.btn-copy:hover {
    background: #2f855a;
}

/* 搜索区域 */
.search-container {
    display: flex;
    gap: 10px;
    align-items: center;
}

.search-container input {
    flex: 1;
}

/* 剪切板条目样式 */
.paste-item {
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    margin-bottom: 20px;
    overflow: hidden;
    transition: box-shadow 0.3s ease;
}

.paste-item:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.paste-header {
    background: #f7fafc;
    padding: 15px 20px;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.paste-title {
    font-weight: 600;
    color: #2d3748;
    font-size: 16px;
}

.paste-meta {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 12px;
    color: #718096;
}

.paste-language {
    background: #667eea;
    color: white;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 11px;
}

.paste-content {
    position: relative;
}

.paste-content pre {
    margin: 0 !important;
    border-radius: 0 !important;
}

.paste-content code {
    font-size: 13px;
    line-height: 1.5;
}

.paste-actions {
    position: absolute;
    top: 10px;
    right: 10px;
    display: flex;
    gap: 5px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.paste-item:hover .paste-actions {
    opacity: 1;
}

.paste-tags {
    padding: 15px 20px;
    background: #f7fafc;
    border-top: 1px solid #e2e8f0;
}

.tag {
    display: inline-block;
    background: #e2e8f0;
    color: #4a5568;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 11px;
    margin-right: 8px;
    margin-bottom: 4px;
}

/* 通知样式 */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 15px 20px;
    border-radius: 8px;
    color: white;
    font-weight: 600;
    z-index: 1000;
    transform: translateX(400px);
    transition: transform 0.3s ease;
}

.notification.show {
    transform: translateX(0);
}

.notification.success {
    background: #38a169;
}

.notification.error {
    background: #e53e3e;
}

/* 加载状态 */
.loading {
    text-align: center;
    padding: 40px;
    color: #718096;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #718096;
}

.empty-state h3 {
    margin-bottom: 10px;
    color: #4a5568;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    section {
        padding: 20px;
        margin-bottom: 20px;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .search-container {
        flex-direction: column;
    }
    
    .search-container input {
        margin-bottom: 10px;
    }
    
    .paste-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .paste-meta {
        flex-wrap: wrap;
    }
}