* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Fira Code', monospace;
}

:root {
    --bg: #ffffff;
    --panel: #ffffff;
    --accent: #e74c3c;
    --tile: #eef2f7;
    --text: #2d3748;
    --grid-line: rgb(183, 170, 170);
    --border: #c1cbd6;
    --button-bg: #eef2f7;
    --button-hover: #e1e8f0;
    --zoom-controls-bg: rgba(255, 255, 255, 0.9);
    --header-bg: rgba(247, 249, 252, 0.9);
    --status-bg: rgba(247, 249, 252, 0.9);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --card-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
    --canvas-bg: #f7f9fc;
}

body.theme-dark {
    --bg: #1B1B1F;
    --panel: #252a33;
    --accent: #ff6b6b;
    --tile: #2d3440;
    --text: #e1e7f0;
    --grid-line: #3a4252;
    --border: #3a4252;
    --button-bg: #2d3440;
    --button-hover: #3a4252;
    --zoom-controls-bg: rgba(37, 42, 51, 0.9);
    --header-bg: rgba(26, 29, 36, 0.9);
    --status-bg: rgba(26, 29, 36, 0.9);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --card-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
    --canvas-bg: #1a1d24;
}

body {
    background: var(--bg);
    color: var(--text);
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    flex-direction: column;
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    image-rendering: pixelated;
}

.header {
    background: var(--header-bg);
    padding: 8px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

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

.logo h1 {
    font-size: 1.4rem;
    color: var(--accent);
    font-weight: 600;
    text-shadow: 0 0 10px rgba(231, 76, 60, 0.2);
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    background: linear-gradient(45deg, #e74c3c, #c0392b, #e74c3c);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.controls {
    display: flex;
    gap: 8px;
}

.btn {
    background: var(--button-bg);
    color: var(--text);
    border: 1px solid var(--border);
    padding: 8px 14px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    box-shadow: var(--card-shadow);
    font-size: 0.9rem;
}

.btn:hover {
    background: var(--button-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
    border-color: var(--accent);
}

.btn i {
    font-size: 0.9rem;
    width: 16px;
    text-align: center;
}

.main-container {
    display: flex;
    flex: 1;
    overflow: hidden;
    padding: 10px;
    gap: 10px;
}

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

/* 左侧组件面板 */
#components-panel {
    width: 300px;
    background: var(--panel);
    padding: 15px;
    overflow-y: auto;
    border-radius: 8px;
    border: 1px solid var(--border);
    box-shadow: var(--card-shadow);
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
}

.panel-header h2 {
    font-size: 1.3rem;
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: 10px;
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.search-container {
    position: relative;
    margin-bottom: 15px;
}

#component-search {
    width: 100%;
    padding: 10px 14px 10px 36px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--tile);
    color: var(--text);
    font-size: 0.9rem;
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    box-shadow: var(--card-shadow);
}

#component-search:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.2);
}

.search-icon {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text);
    opacity: 0.6;
    font-size: 0.8rem;
}

.search-hint {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.85rem;
    color: #888;
    background: rgba(0,0,0,0.05);
    padding: 2px 8px;
    border-radius: 4px;
    display: none;
}

#component-search:focus + .search-hint {
    display: block;
}

.category {
    margin-bottom: 20px;
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.category h3 {
    color: var(--accent);
    margin-bottom: 12px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border);
    font-size: 1.05rem;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.category h3 i {
    font-size: 1rem;
}

.components-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 4px;
}

.component {
    width: 36px;
    height: 36px;
    border-radius: 6px;
    background: var(--panel);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    border: 1px solid var(--border);
    overflow: hidden;
    box-shadow: var(--card-shadow);
}

.component:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    border-color: var(--accent);
}

.component.selected {
    border: 2px solid var(--accent);
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.3);
    background: rgba(231, 76, 60, 0.1);
}

.component img {
    width: 30px;
    height: 30px;
    object-fit: contain;
}

/* 右侧画布区域 */
#canvas-container {
    flex: 1;
    position: relative;
    overflow: hidden;
    background: var(--canvas-bg);
    border-radius: 8px;
    border: 1px solid var(--border);
    box-shadow: var(--card-shadow);
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

#canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    cursor: default;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

body.theme-dark .grid-overlay {
    background-image:
        linear-gradient(rgba(90, 100, 120, 0.3) 1px, transparent 1px),
        linear-gradient(90deg, rgba(90, 100, 120, 0.3) 1px, transparent 1px);
}

/* 状态栏 */
.status-bar {
    background: var(--status-bg);
    padding: 8px 16px;
    display: flex;
    justify-content: space-between;
    border-top: 1px solid var(--border);
    font-size: 0.85rem;
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 -3px 10px rgba(0, 0, 0, 0.05);
}

.status-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 3px 10px;
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border);
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
}

.status-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.08);
}

.status-item i {
    color: var(--accent);
    font-size: 0.8rem;
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

/* 缩放控制按钮 */
.zoom-controls {
    display: flex;
    gap: 6px;
    background: var(--zoom-controls-bg);
    padding: 6px 10px;
    border-radius: 20px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    position: absolute;
    bottom: 20px;
    right: 20px;
    z-index: 10;
}

.zoom-btn {
    background: var(--button-bg);
    color: var(--text);
    border: none;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: var(--card-shadow);
    font-size: 0.8rem;
}

.zoom-btn:hover {
    background: var(--accent);
    color: white;
    transform: scale(1.1);
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(225, 232, 240, 0.3);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--accent);
    border-radius: 4px;
    transition: background 0.6s ease;
}

::-webkit-scrollbar-thumb:hover {
    background: #c0392b;
}

/* 响应式调整 */
@media (max-width: 900px) {
    .main-container {
        flex-direction: column;
    }
   
    #components-panel {
        width: 100%;
        max-height: 220px;
    }
   
    .components-grid {
        grid-template-columns: repeat(10, 1fr);
    }
   
    .zoom-controls {
        position: static;
        transform: none;
    }
   
    .bottom-container {
        order: 3;
    }
}

/* 竖屏设备优化 */
@media (max-width: 768px) and (orientation: portrait) {
    .header {
        padding: 6px 10px;
    }
   
    .logo h1 {
        font-size: 1.1rem;
    }
   
    .controls {
        gap: 4px;
        flex-wrap: wrap;
        justify-content: flex-end;
    }
   
    .btn {
        padding: 5px 8px;
        font-size: 0.75rem;
    }
   
    .btn span {
        display: none;
    }
   
    .btn i {
        font-size: 1rem;
        width: auto;
    }
   
    #theme-toggle span {
        display: none;
    }
   
    .main-container {
        padding: 8px;
        gap: 8px;
    }
   
    #components-panel {
        max-height: 160px;
        padding: 12px;
    }
    
    #components-list {
        flex: 1;
        overflow-y: auto;
        overflow-x: hidden;
        -webkit-overflow-scrolling: touch;
    }
   
    .panel-header h2 {
        font-size: 1rem;
    }
   
    .category h3 {
        font-size: 0.9rem;
        margin-bottom: 8px;
    }
   
    #component-search {
        padding: 8px 12px 8px 32px;
        border-radius: 5px;
        font-size: 0.9rem;
    }
   
    .components-grid {
        grid-template-columns: repeat(8, 1fr);
        gap: 3px;
    }
   
    .component {
        width: 28px;
        height: 28px;
    }
   
    .component img {
        width: 22px;
        height: 22px;
    }
   
    .status-bar {
        padding: 6px 10px;
        flex-wrap: wrap;
        gap: 4px;
        position: relative;
    }
   
    .status-item {
        padding: 2px 5px;
        font-size: 0.7rem;
    }
   
    /* 将工具栏移到底部 */
    .controls {
        order: 3;
        width: 100%;
        justify-content: center;
    }
   
    .logo {
        order: 1;
    }
   
    .header {
        flex-direction: column;
        gap: 8px;
    }
   
    .zoom-controls {
        padding: 4px 6px;
    }
   
    .zoom-btn {
        width: 22px;
        height: 22px;
        font-size: 0.7rem;
    }
   
    /* 底部容器 */
    .bottom-container {
        order: 4;
        width: 100%;
    }
   
    /* 将状态栏移到底部 */
    .bottom-container .status-bar {
        order: 4;
        width: 100%;
        border-top: 1px solid var(--border);
        border-bottom: none;
    }
}

@media (max-width: 600px) {
    .header {
        padding: 12px 15px;
    }
   
    .logo h1 {
        font-size: 1.4rem;
    }
   
    .controls {
        gap: 8px;
        flex-wrap: wrap;
        justify-content: flex-end;
    }
   
    .btn {
        padding: 8px 12px;
        font-size: 0.85rem;
    }
   
    .btn span {
        display: none;
    }
   
    .btn i {
        font-size: 1.1rem;
        width: auto;
    }
   
    #theme-toggle span {
        display: none;
    }
   
    .main-container {
        padding: 15px;
        gap: 15px;
    }
   
    .status-bar {
        padding: 10px 15px;
        flex-wrap: wrap;
        gap: 8px;
    }
   
    .status-item {
        padding: 4px 8px;
        font-size: 0.8rem;
    }
   
    .components-grid {
        grid-template-columns: repeat(8, 1fr);
    }
   
    .zoom-controls {
        padding: 6px 8px;
    }
   
    .zoom-btn {
        width: 26px;
        height: 26px;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.category, .component, .btn, .status-item {
    animation: fadeIn 0.4s ease forwards;
}

.category:nth-child(1) { animation-delay: 0.1s; }
.category:nth-child(2) { animation-delay: 0.2s; }
.category:nth-child(3) { animation-delay: 0.3s; }
.category:nth-child(4) { animation-delay: 0.4s; }

/* 标题装饰 */
.title-decoration {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #e74c3c, #c0392b, #e74c3c);
    z-index: 100;
}

/* 模态框 - 优化版 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--panel);
    padding: 30px;
    border-radius: 16px;
    width: 500px;
    max-width: 90%;
    box-shadow: var(--shadow);
    position: relative;
    transform: translateY(-20px) scale(0.95);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    flex-direction: column;
    max-height: 90vh;
}

.modal.show .modal-content {
    transform: translateY(0) scale(1);
    opacity: 1;
}

.modal {
    transition: all 0.3s ease;
    opacity: 0;
}

.modal.show {
    opacity: 1;
}

/* 模态框触发按钮动画 */
.modal-trigger {
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.modal-trigger:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
    border-color: var(--accent);
}

.modal-trigger:active {
    transform: translateY(-1px);
    transition: all 0.1s ease;
}

.modal-header {
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 15px;
    border-bottom: 2px solid rgba(231, 76, 60, 0.2);
}

.modal-header h2 {
    color: var(--accent);
    font-size: 1.6rem;
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
}

.modal-header h2 i {
    font-size: 1.4rem;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(231, 76, 60, 0.1);
}

.modal-body {
    margin-bottom: 25px;
    padding: 10px 0;
    flex: 1;
    overflow-y: auto;
}

.modal-footer {
    display: flex;
    gap: 15px;
    justify-content: flex-end;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

/* 统一按钮大小 */
.modal-footer .modal-btn {
    flex: 1;
}

.close-modal {
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.close-modal:hover {
    color: var(--accent);
    background: rgba(231, 76, 60, 0.1);
}

.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 500;
    color: var(--text);
    font-size: 1.05rem;
}

.input-group input {
    width: 100%;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--tile);
    color: var(--text);
    font-size: 1.05rem;
    transition: all 0.3s;
}

.input-group input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.2);
}

.modal-btn {
    padding: 12px 28px;
    border-radius: 10px;
    cursor: pointer;
    border: none;
    font-weight: 500;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.05rem;
    min-width: 120px;
    justify-content: center;
}

.primary-btn {
    background: var(--accent);
    color: white;
    box-shadow: 0 4px 12px rgba(231, 76, 60, 0.3);
}

.secondary-btn {
    background: var(--button-bg);
    color: var(--text);
    border: 1px solid var(--border);
}

.modal-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
}

.primary-btn:hover {
    background: #c0392b;
}

.secondary-btn:hover {
    background: var(--button-hover);
}

/* 资源加载指示器 */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    transition: opacity 0.5s ease;
}

.loader-spinner {
    border: 6px solid var(--border);
    border-top: 6px solid var(--accent);
    border-radius: 50%;
    width: 60px;
    height: 60px;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

.loader-text {
    font-size: 1.2rem;
    color: var(--text);
    text-align: center;
    max-width: 80%;
}

.loader-progress {
    width: 300px;
    height: 10px;
    background: var(--border);
    border-radius: 5px;
    margin-top: 20px;
    overflow: hidden;
}

.loader-progress-bar {
    height: 100%;
    background: var(--accent);
    width: 0%;
    transition: width 0.3s ease;
}

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

/* 资源缺失提示 */
.resource-error {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg);
    z-index: 2000;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 20px;
}

.resource-error h2 {
    color: var(--accent);
    margin-bottom: 20px;
}

.resource-error p {
    color: var(--text);
    margin-bottom: 15px;
    max-width: 600px;
    line-height: 1.6;
}

/* 帮助内容样式 */
.help-content {
    padding: 15px;
    background: var(--tile);
    border-radius: 10px;
    max-height: 400px;
    overflow-y: auto;
    line-height: 1.6;
}

.help-content h3 {
    color: var(--accent);
    margin: 20px 0 8px;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.help-content h3 i {
    font-size: 1.1rem;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(231, 76, 60, 0.1);
    border-radius: 50%;
}

.help-content ul {
    padding-left: 20px;
    margin-bottom: 20px;
}

.help-content li {
    margin-bottom: 8px;
    padding-left: 8px;
}

.help-content .highlight {
    background: rgba(231, 76, 60, 0.1);
    padding: 4px 8px;
    border-radius: 6px;
    color: var(--accent);
    font-weight: 500;
    display: inline-block;
    margin: 0 4px;
}

/* 确认信息样式 */
.confirmation-message {
    text-align: center;
    padding: 20px 0;
    font-size: 1.15rem;
    line-height: 1.7;
}

.confirmation-message i {
    font-size: 3.5rem;
    color: var(--accent);
    margin-bottom: 20px;
    display: block;
    opacity: 0.8;
}

.confirmation-message p {
    margin-bottom: 15px;
}

/* 文件上传样式 */
.file-upload {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.file-drop-area {
    border: 2px dashed var(--border);
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s;
    background: var(--tile);
    cursor: pointer;
}

.file-drop-area:hover, .file-drop-area.drag-over {
    border-color: var(--accent);
    background: rgba(231, 76, 60, 0.05);
}

.file-drop-area i {
    font-size: 2.5rem;
    color: var(--accent);
    margin-bottom: 15px;
    display: block;
}

.file-drop-text {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.file-drop-hint {
    color: #888;
    font-size: 0.95rem;
}

/* 状态信息 */
.load-status {
    padding: 15px;
    border-radius: 8px;
    background: var(--tile);
    text-align: center;
    font-size: 1.05rem;
    margin-top: 15px;
}

/* 警告文本样式 */
.warning-text {
    color: var(--accent);
    font-weight: bold;
}

/* 搜索结果提示 */
.search-results {
    margin-top: 10px;
    font-size: 0.9rem;
    color: var(--text);
    padding: 8px;
    border-radius: 6px;
    background: var(--tile);
    display: none;
}

/* ========== 移动端优化样式 ========== */

/* 移动端组件面板切换按钮 */
.mobile-panel-toggle {
    display: none;
    position: fixed;
    bottom: 80px;
    right: 20px;
    z-index: 100;
    background: var(--accent);
    color: white;
    border: none;
    padding: 14px 18px;
    border-radius: 30px;
    font-size: 1rem;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.4);
    transition: all 0.3s ease;
    display: none;
    align-items: center;
    gap: 8px;
}

/* 移动端专属元素，默认隐藏 */
.mobile-only {
    display: none !important;
}

.mobile-panel-toggle:active {
    transform: scale(0.95);
    box-shadow: 0 2px 8px rgba(231, 76, 60, 0.3);
}

.mobile-panel-toggle i {
    font-size: 1.1rem;
}

/* 面板关闭按钮 */
.panel-close-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.2rem;
    cursor: pointer;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.panel-close-btn:hover {
    background: var(--button-hover);
    color: var(--accent);
}

/* 移动端底部工具栏 */
.mobile-toolbar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--header-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-top: 1px solid var(--border);
    padding: 8px 10px;
    z-index: 90;
    justify-content: space-around;
    align-items: center;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
}

.mobile-tool-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    background: none;
    border: none;
    color: var(--text);
    padding: 8px 12px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 50px;
}

.mobile-tool-btn i {
    font-size: 1.3rem;
}

.mobile-tool-btn span {
    font-size: 0.65rem;
    opacity: 0.8;
}

.mobile-tool-btn:active {
    background: var(--accent);
    color: white;
    transform: scale(0.95);
}

.mobile-tool-btn.active {
    color: var(--accent);
}

/* 组件触摸优化 */
.component {
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.component:active {
    transform: scale(0.9);
    background: rgba(231, 76, 60, 0.2);
}

/* 按钮触摸优化 */
.btn, .zoom-btn, .modal-btn {
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.btn:active, .zoom-btn:active, .modal-btn:active {
    transform: scale(0.95);
}

/* ========== 移动端响应式优化 ========== */

@media (max-width: 900px) {
    .mobile-panel-toggle {
        display: flex;
    }
    
    .mobile-toolbar {
        display: flex;
    }
    
    /* 显示移动端专属元素 */
    .mobile-only {
        display: inline-flex !important;
    }
    
    /* 隐藏原来的缩放控件 */
    .zoom-controls {
        display: none !important;
    }
    
    /* 调整主内容区底部间距，为工具栏留出空间 */
    .main-container {
        padding-bottom: 70px;
    }
    
    /* 组件面板改为侧边抽屉式 */
    #components-panel {
        position: fixed;
        top: 0;
        left: 0;
        width: 92%;
        max-width: 420px;
        bottom: 0;
        height: 100vh;
        box-sizing: border-box;
        display: flex;
        flex-direction: column;
        z-index: 200;
        transform: translateX(-100%);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        border-radius: 0;
        box-shadow: 2px 0 20px rgba(0, 0, 0, 0.2);
        padding: 8px;
        max-height: none;
        background: var(--panel);
    }
    
    #components-list {
        flex: 1;
        overflow-y: auto;
        overflow-x: hidden;
        -webkit-overflow-scrolling: touch;
    }
    
    #components-panel.open {
        transform: translateX(0);
    }
    
    .panel-close-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    /* 遮罩层 */
    .panel-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 199;
        opacity: 0;
        transition: opacity 0.3s ease;
    }
    
    .panel-overlay.show {
        display: block;
        opacity: 1;
    }
    
    /* 隐藏顶部控制栏的部分按钮，移到底部工具栏 */
    .header .controls .btn:not(#language-toggle):not(#help-btn):not(#save-screen) {
        display: none;
    }
    
    /* 调整组件网格 */
    .components-grid {
        grid-template-columns: repeat(10, 1fr);
        gap: 3px;
    }
    
    .component {
        width: 32px;
        height: 32px;
    }
    
    .component img {
        width: 26px;
        height: 26px;
    }
    
    /* 调整缩放控件位置 */
    .zoom-controls {
        bottom: 90px;
        right: 15px;
    }
    
    /* 隐藏底部状态栏（移动端空间有限） */
    .bottom-container {
        display: none;
    }
}

@media (max-width: 600px) {
    /* 更小屏幕的优化 */
    .mobile-tool-btn {
        padding: 6px 8px;
        min-width: 45px;
    }
    
    .mobile-tool-btn i {
        font-size: 1.1rem;
    }
    
    .mobile-tool-btn span {
        font-size: 0.6rem;
    }
    
    .components-grid {
        grid-template-columns: repeat(8, 1fr);
        gap: 3px;
    }
    
    .component {
        width: 36px;
        height: 36px;
    }
    
    .component img {
        width: 28px;
        height: 28px;
    }
    
    .header {
        padding: 8px 12px;
    }
    
    .logo h1 {
        font-size: 1rem;
    }
    
    .main-container {
        padding: 8px;
        padding-bottom: 70px;
        gap: 8px;
    }
    
    .mobile-panel-toggle {
        bottom: 75px;
        right: 15px;
        padding: 12px 16px;
        font-size: 0.9rem;
    }
    
    .zoom-controls {
        bottom: 85px;
        right: 12px;
        padding: 5px 8px;
    }
    
    .zoom-btn {
        width: 30px;
        height: 30px;
        font-size: 0.9rem;
    }
}

/* 横屏模式优化 */
@media (max-width: 900px) and (orientation: landscape) {
    .mobile-toolbar {
        left: 0;
        top: 50%;
        transform: translateY(-50%);
        bottom: auto;
        right: auto;
        width: 60px;
        flex-direction: column;
        height: 100vh;
        border-top: none;
        border-right: 1px solid var(--border);
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
    }
    
    .mobile-tool-btn {
        padding: 10px 8px;
    }
    
    .mobile-tool-btn span {
        display: none;
    }
    
    .main-container {
        padding-left: 70px;
        padding-bottom: 10px;
    }
    
    .mobile-panel-toggle {
        bottom: 20px;
        right: 20px;
    }
    
    .zoom-controls {
        bottom: 20px;
        right: 80px;
    }
    
    #components-panel {
        width: 60%;
    }
}

/* 模态框移动端优化 */
@media (max-width: 600px) {
    .modal-content {
        width: 95%;
        padding: 20px;
        border-radius: 12px;
        max-height: 85vh;
    }
    
    .modal-header {
        margin-bottom: 15px;
        padding-bottom: 12px;
    }
    
    .modal-header h2 {
        font-size: 1.3rem;
    }
    
    .modal-header h2 i {
        font-size: 1.2rem;
        width: 32px;
        height: 32px;
    }
    
    .modal-body {
        margin-bottom: 20px;
        padding: 5px 0;
    }
    
    .modal-footer {
        padding-top: 15px;
        gap: 10px;
    }
    
    .modal-btn {
        padding: 10px 20px;
        font-size: 0.95rem;
        min-width: 100px;
    }
    
    .input-group {
        margin-bottom: 15px;
    }
    
    .input-group label {
        font-size: 0.95rem;
        margin-bottom: 8px;
    }
    
    .input-group input {
        padding: 12px;
        font-size: 1rem;
    }
    
    .help-content {
        max-height: 50vh;
        padding: 12px;
    }
    
    .help-content h3 {
        font-size: 1.05rem;
        margin: 15px 0 6px;
    }
    
    .help-content li {
        font-size: 0.9rem;
        margin-bottom: 6px;
    }
    
    .file-drop-area {
        padding: 20px;
    }
    
    .file-drop-area i {
        font-size: 2rem;
    }
    
    .file-drop-text {
        font-size: 1rem;
    }
    
    .file-drop-hint {
        font-size: 0.85rem;
    }
    
    .confirmation-message {
        padding: 15px 0;
        font-size: 1rem;
    }
    
    .confirmation-message i {
        font-size: 2.5rem;
        margin-bottom: 15px;
    }
}

/* 加载指示器移动端优化 */
@media (max-width: 600px) {
    .loader-spinner {
        width: 50px;
        height: 50px;
        border-width: 5px;
    }
    
    .loader-text {
        font-size: 1rem;
    }
    
    .loader-progress {
        width: 250px;
        height: 8px;
    }
}

/* 防止移动端双击缩放 */
* {
    touch-action: manipulation;
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 选中组件的移动端优化 */
.component.selected {
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.3);
    }
    50% {
        box-shadow: 0 0 0 6px rgba(231, 76, 60, 0.15);
    }
}

/* 画布触摸反馈 */
#canvas {
    touch-action: none;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
}

/* 搜索框移动端优化 */
@media (max-width: 600px) {
    #component-search {
        padding: 12px 14px 12px 38px;
        font-size: 1rem;
    }
    
    .search-icon {
        left: 12px;
        font-size: 0.9rem;
    }
}

/* 分类标题移动端优化 */
@media (max-width: 600px) {
    .category h3 {
        font-size: 1rem;
        padding: 8px 0;
        margin-bottom: 10px;
    }
    
    .category {
        margin-bottom: 15px;
    }
}

/* 安全区域适配（针对刘海屏等） */
@supports (padding: max(0px)) {
    .mobile-toolbar {
        padding-bottom: max(8px, env(safe-area-inset-bottom));
    }
    
    .header {
        padding-top: max(8px, env(safe-area-inset-top));
    }
}