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

:root {
    /* 日间模式颜色 */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-accent: #0066cc;
    --border-color: #dee2e6;
    --shadow-light: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-medium: 0 4px 8px rgba(0,0,0,0.15);
    --shadow-heavy: 0 8px 16px rgba(0,0,0,0.2);
    --key-bg: #ffffff;
    --key-border: #d1d5db;
    --key-active: #3b82f6;
    --key-pressed: #1d4ed8;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

[data-theme="dark"] {
    /* 夜间模式颜色 */
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #404040;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-accent: #4da6ff;
    --border-color: #555555;
    --shadow-light: 0 2px 4px rgba(0,0,0,0.3);
    --shadow-medium: 0 4px 8px rgba(0,0,0,0.4);
    --shadow-heavy: 0 8px 16px rgba(0,0,0,0.5);
    --key-bg: #2d2d2d;
    --key-border: #555555;
    --key-active: #4da6ff;
    --key-pressed: #0066cc;
    --gradient-primary: linear-gradient(135deg, #4a5568 0%, #2d3748 100%);
    --gradient-secondary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: all 0.3s ease;
}

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

/* 主题切换按钮 */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-medium);
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-heavy);
}

.theme-icon {
    font-size: 24px;
    transition: transform 0.3s ease;
}

/* 滚动按钮 */
.scroll-buttons {
    position: fixed;
    right: 20px;
    bottom: 20px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.scroll-btn {
    width: 50px;
    height: 50px;
    border: none;
    border-radius: 50%;
    background: var(--gradient-secondary);
    color: white;
    font-size: 20px;
    font-weight: bold;
    cursor: pointer;
    box-shadow: var(--shadow-medium);
    transition: all 0.3s ease;
}

.scroll-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-heavy);
}

/* 通知提示 */
.notification {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 20px 30px;
    border-radius: 10px;
    box-shadow: var(--shadow-heavy);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    max-width: 400px;
    text-align: center;
    border: 1px solid var(--border-color);
}

.notification.show {
    opacity: 1;
    visibility: visible;
}

/* 头部导航 */
.header {
    background: var(--bg-primary);
    box-shadow: var(--shadow-light);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

.navbar {
    padding: 1rem 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-primary);
    text-decoration: none;
}

.logo-icon {
    font-size: 2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-item {
    position: relative;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 0.5rem 0;
}

.nav-link:hover {
    color: var(--text-accent);
}

.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow-medium);
    list-style: none;
    padding: 0.5rem 0;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    padding: 0;
}

.dropdown-menu a {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    text-decoration: none;
    transition: background-color 0.3s ease;
}

.dropdown-menu a:hover {
    background-color: var(--bg-secondary);
    color: var(--text-accent);
}

.nav-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.action-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
}

.action-btn:hover {
    background: var(--text-accent);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

/* 主要内容区域 */
.main-content {
    min-height: calc(100vh - 200px);
}

.hero-section {
    background: var(--gradient-primary);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero-subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* 键盘测试区域 */
.keyboard-section {
    padding: 3rem 0;
    background: var(--bg-secondary);
}

.keyboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.keyboard-tabs {
    display: flex;
    gap: 0.5rem;
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-primary);
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.tab-btn.active {
    background: var(--text-accent);
    color: white;
    border-color: var(--text-accent);
}

.tab-btn:hover:not(.active) {
    background: var(--bg-tertiary);
}

.sound-control {
    display: flex;
    align-items: center;
    gap: 10px;
}

.reset-btn {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-light);
}

.reset-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-medium);
}

.reset-btn:active {
    transform: translateY(0);
}

.sound-label {
    font-weight: 500;
    color: var(--text-primary);
}

.sound-select {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.9rem;
}

/* 键盘容器布局修改 */
.keyboard-container {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    justify-content: center;
}

/* 统计面板样式调整 */
.stats-panel {
    width: 350px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow-medium);
    order: 1; /* 确保在左边 */
}

.stats-panel.show {
    display: block;
}

.keyboard-wrapper {
    flex: 1;
    order: 2; /* 确保在右边 */
    max-width: 1200px;
}

.keyboard-content {
    display: none;
}

.keyboard-content.active {
    display: block;
}

/* 统计面板内容样式 */
.stats-header h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    text-align: center;
    font-size: 1.2rem;
}

.stats-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.stat-label {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-accent);
}

.chart-container {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    text-align: center;
    border: 1px solid var(--border-color);
}

#statsChart {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
}

/* 响应式调整 */
@media (max-width: 1024px) {
    .keyboard-container {
        flex-direction: column;
        align-items: center;
    }
    
    .stats-panel {
        order: 2;
        width: 100%;
        max-width: 600px;
        margin-top: 1rem;
    }
    
    .keyboard-wrapper {
        order: 1;
        width: 100%;
    }
}

@media (max-width: 768px) {
    .keyboard-container {
        gap: 1rem;
    }
    
    .stats-panel {
        padding: 1rem;
    }
    
    .stat-item {
        padding: 0.5rem;
    }
    
    .stat-value {
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .stats-panel {
        width: 100%;
        margin: 0;
    }
    
    .chart-container {
        padding: 0.5rem;
    }
}

/* 工具说明区域 */
.tools-section {
    padding: 4rem 0;
    background: var(--bg-primary);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--text-primary);
    margin-bottom: 3rem;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.tool-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-heavy);
    border-color: var(--text-accent);
}

.tool-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tool-title {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.tool-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 页脚 */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    color: var(--text-primary);
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--text-accent);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

/* 鼠标和按键信息显示面板 */
.input-info-panel {
    background: var(--card-bg);
    border-top: 2px solid var(--primary-color);
    padding: 20px 0;
    margin-top: 20px;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
}

.info-display {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-color);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.1);
}

.mouse-info,
.keyboard-info {
    flex: 1;
    padding: 0 20px;
}

.mouse-info h4,
.keyboard-info h4 {
    color: var(--primary-color);
    margin: 0 0 15px 0;
    font-size: 16px;
    font-weight: 600;
    text-align: center;
}

.mouse-position,
.mouse-buttons,
.current-keys,
.last-key {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 10px 0;
    padding: 8px 12px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: 'Courier New', monospace;
}

.mouse-position span:first-child,
.mouse-buttons span:first-child,
.current-keys span:first-child,
.last-key span:first-child {
    color: var(--text-secondary);
    font-weight: 500;
}

.mouse-position span:last-child,
.mouse-buttons span:last-child,
.current-keys span:last-child,
.last-key span:last-child {
    color: var(--primary-color);
    font-weight: 600;
    background: var(--primary-color-light);
    padding: 4px 8px;
    border-radius: 4px;
    min-width: 120px;
    text-align: center;
}

/* 鼠标按键统计区域样式 */
.mouse-stats-area {
    display: flex;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.mouse-button-stats {
    display: flex;
    gap: 1rem;
    background: var(--bg-secondary);
    padding: 0.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-light);
}

.mouse-btn-stat {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 80px;
    height: 42px; /* 与tab按钮高度一致 */
    background: var(--key-bg);
    border: 1px solid var(--key-border);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    color: var(--text-primary);
}

.mouse-btn-stat:hover {
    background: var(--bg-tertiary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-medium);
}

.mouse-btn-stat.active {
    background: var(--key-active) !important;
    color: white !important;
    border-color: var(--key-active) !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.mouse-btn-label {
    font-size: 14px;
    user-select: none;
}

.mouse-btn-count {
    position: absolute;
    top: 2px;
    right: 4px;
    background: #ff4444;
    color: white;
    font-size: 10px;
    font-weight: bold;
    min-width: 16px;
    height: 16px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    box-shadow: 0 1px 3px rgba(0,0,0,0.3);
    z-index: 10;
    pointer-events: none; /* 防止计数数字阻挡点击事件 */
}

.mouse-btn-count:empty,
.mouse-btn-count[data-count="0"] {
    display: none;
}

/* 暗色主题下的鼠标按键统计样式 */
[data-theme="dark"] .mouse-btn-count {
    background: #ff6666;
    box-shadow: 0 1px 3px rgba(0,0,0,0.5);
}

/* 导航菜单图标样式 */
.nav-icon {
    display: inline-block;
    margin-right: 6px;
    font-size: 16px;
    vertical-align: middle;
}

.menu-icon {
    display: inline-block;
    margin-right: 8px;
    font-size: 14px;
    vertical-align: middle;
}

/* 按键变色样式 - 根据按压次数 */
.key {
    transition: all 0.3s ease;
}

/* 按压次数颜色变化 */
.key.press-count-1 {
    background: #22c55e !important; /* 绿色 - 1次 */
    color: white;
    border-color: #16a34a;
}

.key.press-count-2,
.key.press-count-3,
.key.press-count-4 {
    background: #16a34a !important; /* 深绿色 - 2-4次 */
    color: white;
    border-color: #15803d;
}

.key.press-count-5,
.key.press-count-6,
.key.press-count-7,
.key.press-count-8 {
    background: #a16207 !important; /* 褐色 - 5-8次 */
    color: white;
    border-color: #92400e;
}

.key.press-count-9-plus {
    background: #7c3aed !important; /* 紫色 - 9次以上 */
    color: white;
    border-color: #6d28d9;
}

/* 暗色主题下的按键变色 */
[data-theme="dark"] .key.press-count-1 {
    background: #16a34a !important;
    border-color: #15803d;
}

[data-theme="dark"] .key.press-count-2,
[data-theme="dark"] .key.press-count-3,
[data-theme="dark"] .key.press-count-4 {
    background: #15803d !important;
    border-color: #166534;
}

[data-theme="dark"] .key.press-count-5,
[data-theme="dark"] .key.press-count-6,
[data-theme="dark"] .key.press-count-7,
[data-theme="dark"] .key.press-count-8 {
    background: #92400e !important;
    border-color: #78350f;
}

[data-theme="dark"] .key.press-count-9-plus {
    background: #6d28d9 !important;
    border-color: #5b21b6;
}

/* 确保鼠标点击时不会触发变色 */
.key.mouse-clicked {
    /* 鼠标点击时保持原色，不应用按压变色 */
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-icon {
        margin-right: 4px;
        font-size: 14px;
    }
    
    .menu-icon {
        margin-right: 6px;
        font-size: 12px;
    }
    
    .nav-menu {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .nav-actions {
        gap: 0.5rem;
    }
    
    .action-btn .btn-text {
        display: none;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .keyboard-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .keyboard-container {
        flex-direction: column;
    }
    
    .stats-panel {
        width: 100%;
    }
    
    .key {
        min-width: 30px;
        height: 35px;
        font-size: 0.7rem;
    }
    
    .key-wide {
        min-width: 60px;
    }
    
    .key-extra-wide {
        min-width: 80px;
    }
    
    .key-shift {
        min-width: 90px;
    }
    
    .key-space {
        min-width: 200px;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .scroll-buttons {
        right: 10px;
        bottom: 10px;
    }
    
    .theme-toggle {
        top: 10px;
        right: 10px;
        width: 40px;
        height: 40px;
    }
    
    .theme-icon {
        font-size: 20px;
    }
    
    .scroll-btn {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    
    .info-display {
        flex-direction: column;
        gap: 20px;
    }
    
    .mouse-info,
    .keyboard-info {
        padding: 0;
        width: 100%;
    }
    
    .mouse-button-stats {
        gap: 0.5rem;
        padding: 0.3rem;
    }
    
    .mouse-btn-stat {
        min-width: 60px;
        height: 36px;
    }
    
    .mouse-btn-label {
        font-size: 12px;
    }
    
    .mouse-btn-count {
        font-size: 9px;
        min-width: 14px;
        height: 14px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }
    
    .keyboard {
        padding: 1rem;
    }
    
    .key {
        min-width: 25px;
        height: 30px;
        font-size: 0.6rem;
    }
    
    .key-wide {
        min-width: 50px;
    }
    
    .key-extra-wide {
        min-width: 65px;
    }
    
    .key-shift {
        min-width: 75px;
    }
    
    .key-space {
        min-width: 150px;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.tool-card:hover .tool-icon {
    animation: pulse 1s infinite;
}

.keyboard-content {
    animation: fadeIn 0.5s ease;
}

.notification.show {
    animation: fadeIn 0.3s ease;
}

/* 全尺寸键盘布局样式 */
.keyboard.full-size {
    max-width: 1200px;
    width: 100%;
}

.keyboard-main {
    display: flex;
    gap: 1rem;
    justify-content: center;
    align-items: flex-start;
}

.main-keyboard {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.edit-section {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-left: 0.5rem;
}

.edit-keys-group {
    display: flex;
    gap: 0.25rem;
}

.arrow-keys {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    margin-top: 0.5rem;
}

.arrow-row {
    display: flex;
    gap: 0.25rem;
}

.numpad {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    margin-left: 0.5rem;
}

.numpad-row {
    display: flex;
    gap: 0.25rem;
    position: relative;
}

.numpad-tall {
    height: 85px;
    position: absolute;
    right: 0;
}

.numpad-row:nth-child(2) .numpad-tall {
    top: 0;
}

.numpad-row:nth-child(4) .numpad-tall {
    top: 0;
    height: 85px;
}

.numpad-wide {
    min-width: 85px;
}

/* 响应式调整 */
@media (max-width: 1024px) {
    .keyboard-main {
        flex-direction: column;
        align-items: center;
    }
    
    .edit-section,
    .numpad {
        margin-left: 0;
        margin-top: 1rem;
    }
}

@media (max-width: 768px) {
    .keyboard.full-size {
        transform: scale(0.8);
        transform-origin: center;
    }
    
    .numpad,
    .edit-section {
        display: none;
    }
}

@media (max-width: 480px) {
    .keyboard.full-size {
        transform: scale(0.6);
    }
}

/* fn键特殊样式 */
.key-fn {
    min-width: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-weight: bold;
    border: 1px solid #5a67d8;
    font-size: 0.75rem;
}

.key-fn:hover {
    background: linear-gradient(135deg, #5a67d8 0%, #667eea 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(90, 103, 216, 0.3);
}

.key-fn.active,
.key-fn.pressed {
    background: linear-gradient(135deg, #4c51bf 0%, #553c9a 100%);
    transform: translateY(1px);
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.3);
}

/* 夜间模式下的fn键样式 */
[data-theme="dark"] .key-fn {
    background: linear-gradient(135deg, #4a5568 0%, #2d3748 100%);
    border-color: #4a5568;
}

[data-theme="dark"] .key-fn:hover {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    box-shadow: 0 4px 8px rgba(102, 126, 234, 0.3);
}

/* 在第715行的 .keyboard 样式之前添加以下样式 */

/* 键盘基础布局样式 */
.keyboard {
    background: linear-gradient(145deg, #f8f9fa, #e9ecef);
    border-radius: 16px;
    padding: 20px;
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.1),
        0 10px 20px rgba(0, 0, 0, 0.06),
        inset 0 1px 0 rgba(255, 255, 255, 0.1),
        inset 0 -1px 0 rgba(0, 0, 0, 0.1);
    
    border: 2px solid;
    border-image: linear-gradient(145deg, 
        rgba(255, 255, 255, 0.8),
        var(--border-color),
        rgba(0, 0, 0, 0.1)) 1;
    max-width: 100%;
    overflow-x: auto;
}

/* 键盘行布局 */
.function-row,
.number-row,
.letter-row,
.control-row {
    display: flex;
    gap: 0.25rem;
    margin-bottom: 0.25rem;
    justify-content: center;
}

.key-group {
    display: flex;
    gap: 0.25rem;
    margin-right: 0.5rem;
}

/* 按键基础样式 */
.key {
    min-width: 40px;
    height: 40px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(145deg, var(--key-bg), #f0f0f0);
    border: 1px solid var(--key-border);
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    font-size: 14px;
    color: var(--text-primary);
    user-select: none;
    transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* 3D立体效果 */
    box-shadow: 
        0 4px 8px rgba(0, 0, 0, 0.1),
        0 2px 4px rgba(0, 0, 0, 0.06),
        inset 0 1px 0 rgba(255, 255, 255, 0.1),
        inset 0 -1px 0 rgba(0, 0, 0, 0.1);
    
    /* 渐变背景增强立体感 */
    background: linear-gradient(145deg, 
        rgba(255, 255, 255, 0.9) 0%,
        var(--key-bg) 50%,
        rgba(0, 0, 0, 0.05) 100%);
    
    /* 边框渐变 */
    border: 2px solid;
    border-image: linear-gradient(145deg, 
        rgba(255, 255, 255, 0.8),
        var(--key-border),
        rgba(0, 0, 0, 0.2)) 1;
    
    /* 文字阴影增强立体感 */
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    
    /* 变换原点设置为中心 */
    transform-origin: center center;
    transform-style: preserve-3d;
}

.key-count {
    position: absolute;
    top: 2px;
    right: 2px;
    background: transparent;
    color: #ff4444;
    font-size: 10px;
    font-weight: bold;
    padding: 0;
    border-radius: 0;
    min-width: auto;
    height: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: none;
    z-index: 10;
    line-height: 1;
}

/* 暗色主题下的计数样式 */
[data-theme="dark"] .key-count {
    background: transparent;
    color: #ff6666;
    box-shadow: none;
}

/* 小按键的计数样式调整 */
.key.small .key-count {
    font-size: 8px;
    padding: 0;
    min-width: auto;
    height: auto;
}

/* 悬停效果 */
.key:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 
        0 8px 16px rgba(0, 0, 0, 0.15),
        0 4px 8px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.2),
        inset 0 -1px 0 rgba(0, 0, 0, 0.1);
    
    background: linear-gradient(145deg, 
        rgba(255, 255, 255, 0.95) 0%,
        var(--key-bg) 50%,
        rgba(0, 0, 0, 0.03) 100%);
}

/* 按键激活状态 - 音乐跳动美感 */
.key.active,
.key.pressed {
    animation: keyPressJump 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    transform: translateY(4px) scale(0.95);
    
    /* 按下时的阴影效果 */
    box-shadow: 
        0 2px 4px rgba(0, 0, 0, 0.2),
        0 1px 2px rgba(0, 0, 0, 0.15),
        inset 0 2px 4px rgba(0, 0, 0, 0.1),
        inset 0 -1px 0 rgba(255, 255, 255, 0.1);
    
    /* 按下时的背景变化 */
    background: linear-gradient(145deg, 
        rgba(0, 0, 0, 0.05) 0%,
        var(--key-pressed) 50%,
        rgba(0, 0, 0, 0.1) 100%);
    
    /* 发光效果 */
    box-shadow: 
        0 2px 4px rgba(0, 0, 0, 0.2),
        0 0 20px rgba(59, 130, 246, 0.3),
        0 0 40px rgba(59, 130, 246, 0.1),
        inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* 特殊按键宽度 */
.key-wide {
    min-width: 60px;
}

.key-extra-wide {
    min-width: 80px;
}

.key-shift {
    min-width: 100px;
}

.key-space {
    min-width: 200px;
}

/* 按键计数颜色系统 */
.key[data-count="1"] { background-color: #e3f2fd; }
.key[data-count="2"] { background-color: #bbdefb; }
.key[data-count="3"] { background-color: #90caf9; }
.key[data-count="4"] { background-color: #64b5f6; }
.key[data-count="5"] { background-color: #42a5f5; }
.key[data-count="6"] { background-color: #2196f3; }
.key[data-count="7"] { background-color: #1e88e5; }
.key[data-count="8"] { background-color: #1976d2; }
.key[data-count="9"] { background-color: #1565c0; }
.key[data-count="10"] { background-color: #0d47a1; color: white; }

/* 音乐跳动动画 */
@keyframes keyPressJump {
    0% {
        transform: translateY(0) scale(1) rotateX(0deg);
        box-shadow: 
            0 4px 8px rgba(0, 0, 0, 0.1),
            0 0 0 rgba(59, 130, 246, 0);
    }
    
    25% {
        transform: translateY(-8px) scale(1.05) rotateX(-5deg);
        box-shadow: 
            0 12px 24px rgba(0, 0, 0, 0.2),
            0 0 30px rgba(59, 130, 246, 0.4);
    }
    
    50% {
        transform: translateY(-12px) scale(1.08) rotateX(-8deg);
        box-shadow: 
            0 16px 32px rgba(0, 0, 0, 0.25),
            0 0 40px rgba(59, 130, 246, 0.6);
    }
    
    75% {
        transform: translateY(-6px) scale(1.03) rotateX(-3deg);
        box-shadow: 
            0 10px 20px rgba(0, 0, 0, 0.15),
            0 0 25px rgba(59, 130, 246, 0.3);
    }
    
    100% {
        transform: translateY(4px) scale(0.95) rotateX(2deg);
        box-shadow: 
            0 2px 4px rgba(0, 0, 0, 0.2),
            0 0 20px rgba(59, 130, 246, 0.2);
    }
}

/* 连续按键时的波纹效果 */
.key.active::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.3) 0%, transparent 70%);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: rippleEffect 0.6s ease-out;
    pointer-events: none;
    z-index: 1;
}

@keyframes rippleEffect {
    0% {
        width: 0;
        height: 0;
        opacity: 1;
    }
    100% {
        width: 200%;
        height: 200%;
        opacity: 0;
    }
}

/* 按键弹跳动画 */
@keyframes keyBounce {
    0% { transform: scale(1) translateY(0); }
    50% { transform: scale(1.1) translateY(-3px); }
    100% { transform: scale(1) translateY(0); }
}

.key.bounce {
    animation: keyBounce 0.3s ease;
}

/* 暗色主题下的立体效果 */
[data-theme="dark"] .key {
    background: linear-gradient(145deg, 
        rgba(255, 255, 255, 0.1) 0%,
        var(--key-bg) 50%,
        rgba(0, 0, 0, 0.3) 100%);
    
    box-shadow: 
        0 4px 8px rgba(0, 0, 0, 0.3),
        0 2px 4px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.05),
        inset 0 -1px 0 rgba(0, 0, 0, 0.3);
    
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .key:hover {
    background: linear-gradient(145deg, 
        rgba(255, 255, 255, 0.15) 0%,
        var(--key-bg) 50%,
        rgba(0, 0, 0, 0.2) 100%);
    
    box-shadow: 
        0 8px 16px rgba(0, 0, 0, 0.4),
        0 4px 8px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1),
        inset 0 -1px 0 rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .key.active,
[data-theme="dark"] .key.pressed {
    background: linear-gradient(145deg, 
        rgba(0, 0, 0, 0.2) 0%,
        var(--key-pressed) 50%,
        rgba(0, 0, 0, 0.4) 100%);
    
    box-shadow: 
        0 2px 4px rgba(0, 0, 0, 0.4),
        0 0 20px rgba(77, 166, 255, 0.4),
        0 0 40px rgba(77, 166, 255, 0.2),
        inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .keyboard {
    background: linear-gradient(145deg, #2d2d2d, #1a1a1a);
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.3),
        0 10px 20px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.05),
        inset 0 -1px 0 rgba(0, 0, 0, 0.3);
}

/* 特殊按键的增强效果 */
.key[data-key="Space"] {
    background: linear-gradient(145deg, 
        rgba(255, 255, 255, 0.95) 0%,
        #f8f9fa 30%,
        var(--key-bg) 70%,
        rgba(0, 0, 0, 0.05) 100%);
}

.key[data-key="Enter"] {
    background: linear-gradient(145deg, 
        rgba(34, 197, 94, 0.1) 0%,
        var(--key-bg) 50%,
        rgba(34, 197, 94, 0.05) 100%);
}

.key[data-key="Backspace"] {
    background: linear-gradient(145deg, 
        rgba(239, 68, 68, 0.1) 0%,
        var(--key-bg) 50%,
        rgba(239, 68, 68, 0.05) 100%);
}

/* 功能键的特殊效果 */
.function-row .key {
    background: linear-gradient(145deg, 
        rgba(99, 102, 241, 0.1) 0%,
        var(--key-bg) 50%,
        rgba(99, 102, 241, 0.05) 100%);
}

/* 数字键的特殊效果 */
.number-row .key {
    background: linear-gradient(145deg, 
        rgba(168, 85, 247, 0.1) 0%,
        var(--key-bg) 50%,
        rgba(168, 85, 247, 0.05) 100%);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .keyboard {
        padding: 1rem;
    }
    
    .key {
        min-width: 30px;
        height: 35px;
        font-size: 0.7rem;
        box-shadow: 
            0 2px 4px rgba(0, 0, 0, 0.1),
            0 1px 2px rgba(0, 0, 0, 0.06),
            inset 0 1px 0 rgba(255, 255, 255, 0.1);
    }
    
    .key.active,
    .key.pressed {
        animation: keyPressJumpMobile 0.25s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    }
    
    .key-wide {
        min-width: 45px;
    }
    
    .key-extra-wide {
        min-width: 60px;
    }
    
    .key-shift {
        min-width: 75px;
    }
    
    .key-space {
        min-width: 150px;
    }
    
    .function-row,
    .number-row,
    .letter-row,
    .control-row {
        gap: 0.15rem;
    }
    
    .key-group {
        gap: 0.15rem;
        margin-right: 0.3rem;
    }
}

@keyframes keyPressJumpMobile {
    0% {
        transform: translateY(0) scale(1);
    }
    50% {
        transform: translateY(-6px) scale(1.05);
    }
    100% {
        transform: translateY(2px) scale(0.98);
    }
}

@media (max-width: 480px) {
    .key {
        min-width: 25px;
        height: 30px;
        font-size: 0.6rem;
    }
    
    .key-wide {
        min-width: 35px;
    }
    
    .key-extra-wide {
        min-width: 45px;
    }
    
    .key-shift {
        min-width: 55px;
    }
    
    .key-space {
        min-width: 100px;
    }
}