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

:root {
    /* 颜色系统 */
    --primary-color: #007AFF;
    --primary-light: #5AC8FA;
    --primary-dark: #0056CC;
    --secondary-color: #34C759;
    --accent-color: #FF9500;
    --danger-color: #FF3B30;
    --warning-color: #FF9500;
    --success-color: #34C759;
    --info-color: #5856D6;
    
    /* iOS背景色 */
    --bg-primary: #F2F2F7;
    --bg-secondary: #FFFFFF;
    --bg-tertiary: #E5E5EA;
    --bg-quaternary: #D1D1D6;
    
    /* iOS文本色 */
    --text-primary: #000000;
    --text-secondary: #3C3C43;
    --text-tertiary: #8E8E93;
    --text-quaternary: #AEAEB2;
    
    /* 卡片和控件 */
    --card-bg: #FFFFFF;
    --card-border: rgba(0, 0, 0, 0.08);
    --card-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    --card-shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.08);
    
    /* 圆角 */
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    
    /* 间距 */
    --spacing-xxxs: 1px;
    --spacing-xxs: 2px;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 20px;
    --spacing-xl: 24px;
    --spacing-2xl: 32px;
    
    /* 过渡动画 */
    --transition-fast: 0.2s cubic-bezier(0.25, 0.1, 0.25, 1);
    --transition-normal: 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'SF Pro Display', 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    line-height: 1.4;
    font-size: 17px;
}

.container {
    max-width: 100vw;
    height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
}

/* 头部样式 */
.header {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 0.5px solid rgba(0, 0, 0, 0.1);
    flex-shrink: 0;
    position: relative;
    z-index: 10;
}

.header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 0.5px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(0, 0, 0, 0.08) 20%, 
        rgba(0, 0, 0, 0.08) 80%, 
        transparent 100%);
}

/* 顶部行 */
.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-xl);
    height: 72px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.41px;
}

.logo i {
    color: var(--primary-color);
    font-size: 24px;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 8px 16px;
    background: rgba(255, 59, 48, 0.1);
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 600;
    color: var(--danger-color);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--danger-color);
    animation: blink 2s infinite;
}

.status-indicator.connected {
    background: rgba(52, 199, 89, 0.1);
    color: var(--success-color);
}

.status-indicator.connected .status-dot {
    background: var(--success-color);
    animation: none;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* 统计信息行 */
.header-stats {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    padding: var(--spacing-sm) var(--spacing-xl);
    background: rgba(0, 0, 0, 0.02);
    border-top: 0.5px solid rgba(0, 0, 0, 0.08);
}

.stat-item {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-xs);
    font-size: 14px;
}

.stat-label {
    color: var(--text-tertiary);
    font-weight: 500;
}

.stat-value {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 16px;
    letter-spacing: -0.41px;
}

.recording-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-left: auto;
}

.recording-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 14px;
    font-weight: 600;
}

.recording-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-tertiary);
}

.recording-indicator.recording .recording-dot {
    background: var(--danger-color);
    animation: blink 1s infinite;
}

.recording-time {
    font-size: 13px;
    color: var(--text-tertiary);
    font-weight: 500;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-lg);
    background: var(--card-bg);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 15px;
    font-weight: 500;
    min-width: 44px;
    min-height: 44px;
    border: 0.5px solid rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--text-primary);
    opacity: 0;
    transition: opacity var(--transition-fast);
    border-radius: inherit;
}

.btn:hover::before {
    opacity: 0.08;
}

.btn:active::before {
    opacity: 0.12;
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn i {
    font-size: 16px;
}

/* 按钮变体 */
.taobao-btn {
    background: linear-gradient(135deg, #FF4000, #FF6B35);
    color: white;
    border-color: rgba(255, 107, 0, 0.3);
}

.lang-btn {
    background: rgba(0, 122, 255, 0.12);
    border-color: rgba(0, 122, 255, 0.2);
    color: var(--primary-color);
}

.record-btn {
    background: rgba(52, 199, 89, 0.12);
    border-color: rgba(52, 199, 89, 0.2);
    color: var(--success-color);
}

.record-btn.recording {
    background: rgba(255, 59, 48, 0.12);
    border-color: rgba(255, 59, 48, 0.2);
    color: var(--danger-color);
    animation: pulse 2s infinite;
}

.clear-btn {
    background: rgba(255, 149, 0, 0.12);
    border-color: rgba(255, 149, 0, 0.2);
    color: var(--warning-color);
}

.connect-btn {
    background: rgba(0, 122, 255, 0.12);
    border-color: rgba(0, 122, 255, 0.2);
    color: var(--primary-color);
}

.connect-btn.connected {
    background: rgba(52, 199, 89, 0.12);
    border-color: rgba(52, 199, 89, 0.2);
    color: var(--success-color);
}

.settings-btn {
    background: rgba(88, 86, 214, 0.12);
    border-color: rgba(88, 86, 214, 0.2);
    color: var(--info-color);
}

/* 主要内容区域 */
.main-content {
    flex: 1;
    padding: var(--spacing-xl);
    overflow-y: auto;
    background: var(--bg-primary);
}

/* 占位符 */
.waveform-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 400px;
    color: var(--text-tertiary);
    font-size: 18px;
}

.waveform-placeholder i {
    font-size: 64px;
    margin-bottom: var(--spacing-md);
    color: var(--primary-light);
}

/* 波形容器 */
.waveform-container {
    display: grid;
    gap: var(--spacing-lg);
    height: 100%;
}

/* 响应式网格布局 */
.waveform-container.layout-1 { grid-template-columns: repeat(1, 1fr); }
.waveform-container.layout-2 { grid-template-columns: repeat(2, 1fr); }
.waveform-container.layout-3 { grid-template-columns: repeat(3, 1fr); }
.waveform-container.layout-4 { grid-template-columns: repeat(4, 1fr); }
.waveform-container.layout-6 { grid-template-columns: repeat(6, 1fr); }

/* 波形卡片 */
.waveform-card {
    background: var(--card-bg);
    border: 0.5px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
    min-height: 280px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--card-shadow);
}

.waveform-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--card-shadow-hover);
    border-color: rgba(0, 0, 0, 0.12);
}

.waveform-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xs);
    padding-bottom: var(--spacing-xs);
    border-bottom: 0.5px solid rgba(0, 0, 0, 0.08);
}

.waveform-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
}

.channel-badge {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    padding: 12px 6px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 6;
    letter-spacing: 0.5px;
}

.channel-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.channel-stat {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-xs);
}

.channel-info-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.41px;
    font-variant-numeric: tabular-nums;
}

.channel-value {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.41px;
    font-variant-numeric: tabular-nums;
}

.channel-unit {
    font-size: 13px;
    color: var(--text-tertiary);
    font-weight: 500;
}

.channel-range {
    font-size: 13px;
    color: var(--text-tertiary);
    background: rgba(0, 0, 0, 0.02);
    padding: 4px 10px;
    border-radius: 12px;
    border: 0.5px solid rgba(0, 0, 0, 0.08);
}

.waveform-canvas-container {
    flex: 1;
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    background: rgba(0, 0, 0, 0.02);
    border: 0.5px solid rgba(0, 0, 0, 0.08);
    margin: var(--spacing-xs) 0;
}

canvas {
    width: 100%;
    height: 100%;
    display: block;
}

/* 设置面板 */
.settings-panel {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 400px;
    max-width: 90vw;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border-left: 0.5px solid rgba(0, 0, 0, 0.1);
    box-shadow: -2px 0 30px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.settings-panel.active {
    transform: translateX(0);
}

.settings-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.settings-backdrop.active {
    opacity: 1;
    visibility: visible;
}

.settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xl);
    border-bottom: 0.5px solid rgba(0, 0, 0, 0.1);
    background: rgba(255, 255, 255, 0.95);
}

.settings-header h2 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.41px;
}

.settings-header h2 i {
    color: var(--primary-color);
}

.close-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: rgba(0, 0, 0, 0.04);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    color: var(--text-primary);
    font-size: 18px;
}

.close-btn:hover {
    background: rgba(0, 0, 0, 0.08);
}

.settings-content {
    flex: 1;
    padding: var(--spacing-xl);
    overflow-y: auto;
}

.settings-section {
    margin-bottom: var(--spacing-2xl);
}

.settings-section:last-child {
    margin-bottom: 0;
}

.settings-section h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 0.5px solid rgba(0, 0, 0, 0.08);
}

.settings-section h3 i {
    color: var(--primary-color);
    font-size: 16px;
}

.setting-group {
    margin-bottom: var(--spacing-xl);
}

.setting-group:last-child {
    margin-bottom: 0;
}

.setting-group label {
    display: block;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xxxs);
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.input-with-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(0, 0, 0, 0.02);
    border: 0.5px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm);
}

.input-with-label span:first-child {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
    min-width: 60px;
}

.input-with-label input {
    flex: 1;
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-size: 16px;
    outline: none;
    font-family: inherit;
}

.input-with-label input:disabled {
    background: rgba(0, 0, 0, 0.02);
    color: var(--text-tertiary);
    cursor: not-allowed;
}

.input-with-label .unit {
    font-size: 14px;
    color: var(--text-tertiary);
    min-width: 40px;
}

/* 开关控件样式 */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 52px;
    height: 28px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 28px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .toggle-slider {
    background-color: var(--primary-color);
}

input:checked + .toggle-slider:before {
    transform: translateX(24px);
}

input[type="range"] {
    width: 100%;
    height: 32px;
    -webkit-appearance: none;
    background: transparent;
    outline: none;
    margin: var(--spacing-sm) 0;
}

input[type="range"]::-webkit-slider-runnable-track {
    width: 100%;
    height: 4px;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 2px;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 28px;
    height: 28px;
    background: var(--primary-color);
    border: 0.5px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    cursor: pointer;
    margin-top: -12px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
    transition: all var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.range-value {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 15px;
    color: var(--text-primary);
    font-weight: 600;
    justify-content: center;
    margin-top: var(--spacing-sm);
}

select {
    width: 100%;
    padding: var(--spacing-sm);
    border: 0.5px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--radius-sm);
    background: rgba(0, 0, 0, 0.02);
    color: var(--text-primary);
    font-size: 16px;
    outline: none;
    transition: border-color var(--transition-fast);
    font-family: inherit;
    cursor: pointer;
}

select:focus {
    border-color: var(--primary-color);
    background: rgba(0, 122, 255, 0.04);
}

.hint {
    font-size: 13px;
    color: var(--text-tertiary);
    margin-top: var(--spacing-xs);
    line-height: 1.4;
    font-style: italic;
}

.recording-info {
    background: rgba(0, 0, 0, 0.02);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
    border: 0.5px solid rgba(0, 0, 0, 0.08);
    margin-top: var(--spacing-md);
}

.info-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xs);
    font-size: 14px;
}

.info-row:last-child {
    margin-bottom: 0;
}

.info-row span:first-child {
    color: var(--text-secondary);
    font-weight: 500;
}

.info-row span:nth-child(2) {
    color: var(--text-primary);
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

.info-row span:last-child {
    color: var(--text-tertiary);
}

.settings-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 0.5px solid rgba(0, 0, 0, 0.1);
}

.primary-btn {
    flex: 1;
    background: var(--primary-color);
    color: white;
    border: none;
}

.primary-btn:hover {
    background: var(--primary-dark);
}

.secondary-btn {
    flex: 1;
    background: rgba(0, 0, 0, 0.04);
    color: var(--text-primary);
    border: 0.5px solid rgba(0, 0, 0, 0.1);
}

.secondary-btn:hover {
    background: rgba(0, 0, 0, 0.08);
}

/* Y轴自适应状态提示 */
.auto-scale-indicator {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    color: var(--success-color);
    background: rgba(52, 199, 89, 0.1);
    padding: 2px 6px;
    border-radius: 10px;
    margin-left: 8px;
}

/* 悬停提示样式 */
.tooltip {
    position: absolute;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 12px;
    pointer-events: none;
    z-index: 1000;
    white-space: nowrap;
    transform: translate(-50%, -100%);
    margin-top: -10px;
    display: none;
}

.tooltip:before {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: rgba(0, 0, 0, 0.8);
}

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

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

::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.3);
}
/* 自适应Y轴显示样式 */
.channel-range.auto-scale {
    background: rgba(52, 199, 89, 0.1) !important;
    border-color: rgba(52, 199, 89, 0.2) !important;
    color: var(--success-color) !important;
    font-weight: 600;
    font-size: 12px;
    line-height: 1.2;
    text-align: center;
}

.channel-range.auto-scale small {
    font-size: 10px;
    color: var(--text-tertiary);
    font-weight: normal;
    display: block;
    margin-top: 2px;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .waveform-container.layout-4 { grid-template-columns: repeat(3, 1fr); }
    .waveform-container.layout-6 { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 992px) {
    .waveform-container.layout-3,
    .waveform-container.layout-4 { grid-template-columns: repeat(2, 1fr); }
    .waveform-container.layout-6 { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
    .header-top {
        padding: var(--spacing-md);
        flex-wrap: wrap;
        height: auto;
    }
    
    .header-left,
    .header-right {
        width: 100%;
        justify-content: center;
        margin-bottom: var(--spacing-sm);
    }
    
    .waveform-container.layout-2,
    .waveform-container.layout-3,
    .waveform-container.layout-4,
    .waveform-container.layout-6 { 
        grid-template-columns: repeat(1, 1fr);
    }
    
    .settings-panel {
        width: 100%;
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: var(--spacing-md);
    }
    
    .waveform-card {
        padding: var(--spacing-md);
    }
    
    .channel-info {
        flex-direction: column;
        align-items: flex-end;
        gap: var(--spacing-xs);
    }
}

/* 录制按钮动画 */
.record-btn {
    transition: all var(--transition-normal), display var(--transition-normal) !important;
}

/* 确保按钮排布在移动端适配 */
@media (max-width: 768px) {
    .header-right {
        display: flex;
        flex-wrap: wrap;
        gap: var(--spacing-sm);
        justify-content: center;
    }

    .header-right .btn {
        flex: 1;
        min-width: 120px;
    }

    /* 录制按钮在移动端可能隐藏，需要特殊处理 */
    .record-btn[style*="display: none"] {
        display: none !important;
    }
}