/* 全局样式 */
:root {
    --primary-color: #4A6CF7;
    --primary-hover: #3A5CE5;
    --secondary-color: #00C8FF;
    --dark-bg: #1A1F2C;
    --dark-bg-lighter: #2A3040;
    --light-bg: #F4F7FF;
    --border-color: #E9ECEF;
    --text-color: #1A1F2C;
    --text-light: #6E7A8A;
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --transition: all 0.3s ease;
    --font-primary: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-primary);
}

body {
    background-color: var(--light-bg);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 头部样式 */
header {
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-fill-color: transparent;
}

.mode-selector {
    display: flex;
    gap: 8px;
    background-color: #F0F3FA;
    border-radius: 10px;
    padding: 4px;
}

.mode-selector button {
    background: none;
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    color: var(--text-light);
    transition: var(--transition);
}

.mode-selector button.active {
    background-color: white;
    color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

/* 主要内容区域 */
main {
    display: flex;
    flex: 1;
    padding: 24px;
    gap: 24px;
    overflow: hidden;
}

.editor-container, .preview-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    height: calc(100vh - 180px);
    width: 50%;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(to right, #F8FAFF, #FFFFFF);
}

.panel-header h2 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-color);
    position: relative;
    padding-left: 12px;
}

.panel-header h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 16px;
    background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.editor-controls, .preview-controls {
    display: flex;
    gap: 8px;
}

.control-btn {
    background: none;
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-light);
    transition: var(--transition);
}

.control-btn:hover {
    background-color: #F0F3FA;
    color: var(--primary-color);
    transform: translateY(-2px);
}

.control-btn.active {
    color: var(--primary-color);
    background-color: rgba(74, 108, 247, 0.1);
}

/* 编辑器样式 */
.CodeMirror {
    height: 100% !important;
    font-size: 14px;
    line-height: 1.6;
    font-family: 'Menlo', 'Monaco', 'Courier New', monospace;
}

.CodeMirror-wrap pre {
    word-break: break-word;
}

.CodeMirror-linenumber {
    padding: 0 8px;
}

.CodeMirror-foldgutter {
    width: 1.2em;
}

.editor-container {
    display: flex;
    flex-direction: column;
}

.editor-status-bar {
    display: flex;
    justify-content: space-between;
    padding: 8px 16px;
    background-color: var(--dark-bg);
    color: #fff;
    font-size: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* 预览区域样式 */
#preview-frame {
    flex: 1;
    overflow: auto;
    padding: 16px;
    background-color: white;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    background-image: 
        linear-gradient(45deg, #f9f9f9 25%, transparent 25%), 
        linear-gradient(-45deg, #f9f9f9 25%, transparent 25%), 
        linear-gradient(45deg, transparent 75%, #f9f9f9 75%), 
        linear-gradient(-45deg, transparent 75%, #f9f9f9 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

#preview-content {
    width: 100%;
    height: 100%;
    overflow: auto;
    position: relative;
    background-color: white;
    box-shadow: var(--shadow-sm);
    border-radius: var(--radius-sm);
}

#preview-content iframe {
    width: 100%;
    height: 100%;
    min-height: 400px;
    border: none;
}

.error-message {
    padding: 16px;
    background-color: #FFF5F5;
    color: #E53E3E;
    border-radius: var(--radius-sm);
    border-left: 4px solid #E53E3E;
    margin: 16px 0;
}

.code-warning {
    background-color: #FFFAF0;
    color: #DD6B20;
    padding: 12px 16px;
    margin-top: 20px;
    border-radius: var(--radius-sm);
    border-left: 4px solid #F6AD55;
}

/* 底部操作栏 */
.action-bar {
    background-color: white;
    border-top: 1px solid var(--border-color);
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.05);
}

.download-options {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.action-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    border: none;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(74, 108, 247, 0.25);
}

.action-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(74, 108, 247, 0.35);
}

.image-options {
    display: flex;
    gap: 24px;
    align-items: center;
}

.option-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.option-group label {
    font-size: 14px;
    color: var(--text-light);
}

.option-group select {
    background-color: #F0F3FA;
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: var(--transition);
}

.option-group select:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(74, 108, 247, 0.15);
}

.option-group input[type="range"] {
    width: 100px;
    accent-color: var(--primary-color);
}

.option-group input[type="checkbox"] {
    accent-color: var(--primary-color);
    width: 16px;
    height: 16px;
    border-radius: 4px;
}

/* 提示框样式 */
#toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1000;
}

.toast {
    background-color: var(--dark-bg);
    color: white;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin-top: 8px;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 8px;
    animation: slideIn 0.3s ease, fadeOut 0.3s ease 2.7s forwards;
    border-left: 4px solid var(--primary-color);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}

/* 全屏预览样式 */
#fullscreen-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: white;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

#fullscreen-container.hidden {
    display: none;
}

.fullscreen-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background-color: var(--dark-bg);
    color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.fullscreen-header h2 {
    font-size: 1.2rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.fullscreen-header h2::before {
    content: '';
    display: block;
    width: 8px;
    height: 8px;
    background-color: var(--primary-color);
    border-radius: 50%;
    box-shadow: 0 0 0 2px rgba(74, 108, 247, 0.3);
}

.fullscreen-controls {
    display: flex;
    gap: 16px;
}

.fullscreen-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.fullscreen-btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.25);
}

#fullscreen-content {
    flex: 1;
    overflow: auto;
    padding: 24px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-image: 
        linear-gradient(45deg, #f5f5f5 25%, transparent 25%), 
        linear-gradient(-45deg, #f5f5f5 25%, transparent 25%), 
        linear-gradient(45deg, transparent 75%, #f5f5f5 75%), 
        linear-gradient(-45deg, transparent 75%, #f5f5f5 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

#fullscreen-content iframe {
    width: 100%;
    height: 100%;
    border: none;
    background-color: white;
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-md);
}

/* 动画相关样式 */
.animation-active {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(74, 108, 247, 0.4);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(74, 108, 247, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(74, 108, 247, 0);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    main {
        flex-direction: column;
    }
    
    .editor-container, .preview-container {
        width: 100%;
        height: calc(50vh - 100px);
    }
    
    .image-options {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .action-bar {
        flex-direction: column;
        gap: 16px;
    }
    
    .download-options {
        width: 100%;
        justify-content: center;
    }
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* 代码编辑器主题增强 */
.cm-s-dracula.CodeMirror {
    box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.1);
}

.CodeMirror-gutters {
    border-right: 1px solid rgba(0, 0, 0, 0.1);
    background-color: #282a36;
}

/* 增强过渡动画 */
.editor-container:hover, .preview-container:hover {
    box-shadow: var(--shadow-lg);
}

/* 复选框美化 */
input[type="checkbox"] {
    position: relative;
    cursor: pointer;
}

input[type="checkbox"]:before {
    content: "";
    display: block;
    position: absolute;
    width: 16px;
    height: 16px;
    top: 0;
    left: 0;
    background-color: #f3f3f3;
    border: 1px solid #ddd;
    border-radius: 3px;
}

input[type="checkbox"]:checked:before {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

input[type="checkbox"]:checked:after {
    content: "";
    display: block;
    position: absolute;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
    top: 2px;
    left: 6px;
}