/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: #e0e0e0;
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    min-width: 600px;
    max-width: 90vw;
    width: fit-content;
    margin: 0 auto;
    padding: 20px;
}

/* 头部样式 */
header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px 0;
}

header h1 {
    color: #64ffda;
    margin-bottom: 10px;
    font-size: 2.5rem;
    font-weight: 700;
}

header p {
    color: #b0b0b0;
    font-size: 1.1rem;
    margin-bottom: 15px;
}

.nav-links {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.nav-link {
    color: #64ffda;
    text-decoration: none;
    padding: 8px 16px;
    border: 1px solid rgba(100, 255, 218, 0.3);
    border-radius: 6px;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    background: rgba(100, 255, 218, 0.1);
}

.nav-link:hover {
    background: rgba(100, 255, 218, 0.2);
    border-color: #64ffda;
    transform: translateY(-1px);
}

/* 主要内容区域 */
main {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

/* 节标题 */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.section-header h2 {
    color: #64ffda;
    font-size: 1.5rem;
    font-weight: 600;
}

.controls {
    display: flex;
    align-items: center;
    gap: 15px;
}

.input-controls {
    display: flex;
    align-items: center;
    gap: 10px;
}

.hint {
    color: #888;
    font-size: 0.9rem;
}

/* 输入区域 */
.input-section {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid rgba(100, 255, 218, 0.2);
    width: fit-content;
    min-width: 500px;
}

#codeInput {
    width: 100%;
    min-width: 460px;
    background: #1e1e2f;
    border: 2px solid #333;
    border-radius: 8px;
    padding: 15px;
    color: #e0e0e0;
    font-family: 'Fira Code', 'Consolas', 'Monaco', monospace;
    font-size: 14px;
    line-height: 1.5;
    resize: both;
    min-height: 60px;
    height: auto;
    transition: all 0.3s ease;
    overflow-y: hidden;
}

#codeInput:focus {
    outline: none;
    border-color: #64ffda;
    box-shadow: 0 0 0 3px rgba(100, 255, 218, 0.1);
}

#codeInput::placeholder {
    color: #666;
}

/* 预览区域 */
.preview-section {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid rgba(100, 255, 218, 0.2);
    width: fit-content;
    min-width: 500px;
}

.code-preview {
    background: #1e1e2f;
    border-radius: 8px;
    border: 2px solid #333;
    min-height: 60px;
    min-width: 460px;
    width: fit-content;
    position: relative;
    overflow: auto;
}

.placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60px;
    padding: 20px;
    color: #666;
    font-style: italic;
    font-size: 1.1rem;
}

/* 代码行样式 */
.code-line {
    display: flex;
    position: relative;
    min-height: 24px;
    line-height: 24px;
}

.line-number {
    background: #2a2a3a;
    color: #666;
    padding: 0 12px;
    border-right: 1px solid #444;
    text-align: right;
    min-width: 50px;
    cursor: pointer;
    user-select: none;
    font-family: 'Fira Code', 'Consolas', 'Monaco', monospace;
    font-size: 13px;
    transition: all 0.2s ease;
}

.line-number:hover {
    background: #3a3a4a;
    color: #64ffda;
}

.line-content {
    flex: 1;
    padding: 0 15px;
    font-family: 'Fira Code', 'Consolas', 'Monaco', monospace;
    font-size: 14px;
    white-space: pre;
    background: #1e1e2f;
    transition: background-color 0.2s ease;
    min-width: fit-content;
}

/* 选中行高亮 */
.code-line.selected .line-number {
    background: #ff6b6b;
    color: white;
    font-weight: bold;
}

.code-line.selected .line-content {
    background: rgba(255, 107, 107, 0.15);
    border-left: 3px solid #ff6b6b;
}

/* 按钮样式 */
.btn {
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, #64ffda 0%, #18ffff 100%);
    color: #1a1a2e;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(100, 255, 218, 0.3);
}

.btn-primary:disabled {
    background: #444;
    color: #666;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-secondary {
    background: #444;
    color: #e0e0e0;
    border: 1px solid #666;
}

.btn-secondary:hover {
    background: #555;
    border-color: #64ffda;
}

/* 操作区域 */
.actions {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    border: 1px solid rgba(100, 255, 218, 0.2);
}

.status {
    color: #64ffda;
    font-weight: 500;
    min-height: 20px;
}

/* Prism.js 样式覆盖 */
.token.comment {
    color: #7c7c7c !important;
}

.token.string {
    color: #a8e6cf !important;
}

.token.keyword {
    color: #ff8a65 !important;
}

.token.function {
    color: #64ffda !important;
}

.token.number {
    color: #ffb74d !important;
}

.token.operator {
    color: #e0e0e0 !important;
}

.token.punctuation {
    color: #e0e0e0 !important;
}

.token.builtin {
    color: #ba68c8 !important;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .controls {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .actions {
        flex-direction: column;
        gap: 15px;
    }
    
    .hint {
        font-size: 0.8rem;
    }
}

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

::-webkit-scrollbar-track {
    background: #2a2a3a;
}

::-webkit-scrollbar-thumb {
    background: #64ffda;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #18ffff;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(100, 255, 218, 0.3);
    border-radius: 50%;
    border-top-color: #64ffda;
    animation: spin 1s ease-in-out infinite;
}

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