/* ===== 基础重置与变量 ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* PiBot 品牌色 */
    --primary: #e50019;
    --primary-dark: #b80014;
    --primary-light: #ff2f42;
    --primary-glow: rgba(229, 0, 25, 0.22);
    
    /* 功能色 */
    --success: #059669;
    --success-glow: rgba(5, 150, 105, 0.22);
    --warning: #d97706;
    --warning-glow: rgba(217, 119, 6, 0.22);
    --danger: #dc2626;
    --danger-glow: rgba(220, 38, 38, 0.24);
    --info: #303942;
    
    /* 背景色 */
    --bg-primary: #f4f5f7;
    --bg-secondary: #ffffff;
    --bg-tertiary: #eef1f4;
    --bg-card: rgba(255, 255, 255, 0.96);
    --bg-panel: #f7f8fa;
    --brand-dark: #303942;
    --brand-black: #242424;
    
    /* 文字色 */
    --text-primary: #1f2328;
    --text-secondary: #4b5563;
    --text-muted: #7b8794;
    
    /* 边框 */
    --border-color: #d9dde3;
    --border-light: #b9c0c9;
    
    /* 间距 */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    
    /* 字体 */
    --font-display: 'Roboto', -apple-system, sans-serif;
    --font-body: 'Roboto', -apple-system, sans-serif;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.08);
    --shadow-md: 0 8px 20px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 18px 38px rgba(15, 23, 42, 0.12);
    --shadow-glow: 0 0 20px var(--primary-glow);
}

html {
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
}

/* 背景网格效果 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(48, 57, 66, 0.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(48, 57, 66, 0.045) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
}

/* ===== 布局 ===== */
.app-container {
    position: relative;
    z-index: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: 10px var(--space-lg) 0;
}

/* ===== 头部 ===== */
.main-header {
    margin-bottom: var(--space-xl);
    padding: var(--space-md) var(--space-lg);
    background: linear-gradient(135deg, var(--brand-black), #101010);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-bottom: 4px solid var(--primary);
    border-radius: var(--radius-lg);
    box-shadow: 0 16px 35px rgba(0, 0, 0, 0.18);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.logo-icon {
    width: 46px;
    height: 46px;
    background: #3f3f3f;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.35);
}

.logo-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.brand-logo {
    display: block;
    width: 180px;
    height: auto;
    margin-bottom: 2px;
}

.logo-text span {
    display: block;
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.72);
}

.connection-status {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.13);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.82);
}

.language-switch {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    padding: 3px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.13);
    border-radius: var(--radius-sm);
}

.language-switch a {
    min-width: 42px;
    padding: 5px 9px;
    border-radius: 3px;
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.8125rem;
    font-weight: 700;
    text-align: center;
    text-decoration: none;
}

.language-switch a:hover,
.language-switch a.active {
    background: var(--primary);
    color: white;
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--danger);
    box-shadow: 0 0 8px var(--danger-glow);
    transition: all 0.3s ease;
}

.connection-status.connected .status-dot {
    background: var(--success);
    box-shadow: 0 0 8px var(--success-glow);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ===== 区块 ===== */
.section {
    margin-bottom: 28px;
}

.section-header {
    margin-bottom: 18px;
    text-align: left;
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
    column-gap: 12px;
    row-gap: 2px;
}

.section-icon {
    width: 34px;
    height: 34px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--brand-black);
    border-bottom: 3px solid var(--primary);
    border-radius: var(--radius-sm);
    color: white;
    font-size: 1rem;
    margin-bottom: 0;
}

.section-icon svg {
    width: 19px;
    height: 19px;
}

.section-header h2 {
    font-family: var(--font-display);
    font-size: 1.45rem;
    margin-bottom: 0;
    color: var(--text-primary);
    font-weight: 800;
}

.section-desc {
    grid-column: 2;
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

/* ===== 固件卡片 ===== */
.firmware-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.firmware-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.firmware-card:hover {
    border-color: var(--border-light);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.firmware-card.custom {
    border-color: var(--border-color);
    box-shadow: var(--shadow-sm);
}

.firmware-card.custom:hover {
    box-shadow: var(--shadow-lg);
}

.card-badge {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card-badge.official {
    background: var(--brand-dark);
    color: white;
}

.card-badge.custom {
    background: var(--primary);
    color: white;
}

.card-header {
    padding: 28px var(--space-lg) var(--space-md);
    text-align: center;
}

.card-icon {
    width: 58px;
    height: 58px;
    margin: 0 auto 18px;
    background: var(--brand-black);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: inset 0 -4px 0 var(--primary);
}

.card-icon svg {
    width: 29px;
    height: 29px;
}

.card-header h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    margin-bottom: var(--space-xs);
}

.version {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.card-body {
    flex: 1;
    padding: 0 var(--space-lg);
}

.feature-list {
    list-style: none;
    margin-bottom: 18px;
}

.feature-list li {
    padding: var(--space-xs) 0;
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.pin-config {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin-bottom: 18px;
}

.pin-config h4 {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.pin-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-xs) 0;
    font-size: 0.9375rem;
}

.pin-name {
    color: var(--text-secondary);
}

.pin-value {
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--primary);
    background: #ffffff;
    border: 1px solid var(--border-color);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
}

.pin-change {
    font-size: 0.75rem;
    color: var(--warning);
    margin-left: var(--space-sm);
}

.pin-unchanged {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-left: var(--space-sm);
}

.card-footer {
    padding: var(--space-md) var(--space-lg) var(--space-lg);
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    width: 100%;
}

.btn:hover {
    background: #ffffff;
    border-color: var(--primary);
    color: var(--primary);
}

.btn:active {
    transform: scale(0.98);
}

.btn svg {
    width: 18px;
    height: 18px;
}

.btn-primary {
    background: var(--primary);
    border-color: transparent;
    color: white;
    box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
    background: var(--primary-dark);
    color: white;
    box-shadow: 0 6px 20px var(--primary-glow);
}

.btn-download {
    background: var(--primary);
    border-color: transparent;
    color: white;
    box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-download:hover {
    background: var(--primary-dark);
    border-color: transparent;
    color: white;
    box-shadow: 0 6px 20px var(--primary-glow);
}

.btn-connect {
    background: var(--brand-black);
    border-color: transparent;
    color: white;
    width: auto;
    padding: var(--space-sm) var(--space-xl);
    box-shadow: inset 0 -3px 0 var(--primary), var(--shadow-sm);
}

.btn-connect:hover {
    background: #000000;
    color: white;
    box-shadow: inset 0 -3px 0 var(--primary), var(--shadow-md);
}

.btn-connect.connected {
    background: linear-gradient(135deg, var(--danger), #dc2626);
    box-shadow: 0 4px 14px var(--danger-glow);
}

.btn-connect.connected:hover {
    box-shadow: 0 6px 20px var(--danger-glow);
}

.btn-send {
    width: auto;
    background: var(--primary);
    border-color: transparent;
    color: white;
}

/* ===== 连接面板 ===== */
.serial-notice {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-left: 5px solid var(--primary);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
}

.serial-notice-label {
    flex-shrink: 0;
    font-weight: 700;
    color: var(--text-primary);
}

.serial-notice-text {
    line-height: 1.5;
}

.serial-notice.success {
    border-left-color: var(--success);
}

.serial-notice.warning {
    border-left-color: var(--warning);
}

.serial-notice.error {
    border-left-color: var(--danger);
}

.connect-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
}

.connect-row {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

.port-info {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.port-info .port-name {
    font-family: var(--font-display);
    color: var(--primary);
    background: #ffffff;
    border: 1px solid var(--border-color);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
}

.baud-rate {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-left: auto;
}

.baud-rate label {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.baud-rate select {
    background: #ffffff;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: var(--space-xs) var(--space-sm);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    cursor: pointer;
}

/* ===== 测试网格 ===== */
.test-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.test-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.test-panel:hover {
    border-color: var(--border-light);
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    background: var(--brand-black);
    border-bottom: 1px solid var(--border-color);
}

.panel-header h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    color: white;
    font-weight: 800;
}

.panel-subtitle {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.48);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.panel-body {
    padding: var(--space-lg);
}

/* 实时指示器 */
.live-indicator {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.58);
}

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

.live-indicator.active .live-dot {
    background: var(--success);
    box-shadow: 0 0 8px var(--success-glow);
    animation: blink 1s infinite;
}

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

/* 状态显示 */
.status-display {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.status-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.status-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-value {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--brand-black);
}

/* 输入项 */
.input-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.input-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-panel);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.input-item:hover {
    border-color: var(--border-light);
}

.input-item.active {
    border-color: var(--success);
    background: rgba(16, 185, 129, 0.1);
}

.input-item.active .input-led {
    background: var(--success);
    box-shadow: 0 0 12px var(--success-glow);
}

.input-item.active .input-state {
    color: var(--success);
}

.input-item.warning.active {
    border-color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
}

.input-item.warning.active .input-led {
    background: var(--danger);
    box-shadow: 0 0 12px var(--danger-glow);
}

.input-item.warning.active .input-state {
    color: var(--danger);
}

.input-icon {
    width: 40px;
    height: 40px;
    background: var(--brand-black);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.input-icon .axis-label {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 700;
    color: white;
}

.input-icon svg {
    width: 20px;
    height: 20px;
    color: white;
}

.input-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.input-name {
    font-size: 0.9375rem;
    color: var(--text-primary);
}

.input-state {
    font-size: 0.8125rem;
    color: var(--text-muted);
    transition: color 0.3s ease;
}

.input-led {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-light);
    transition: all 0.3s ease;
    flex-shrink: 0;
}

/* 坐标显示 */
.coords-display {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.coord-row {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-panel);
    border-radius: var(--radius-md);
}

.coord-axis {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.coord-axis.x { background: rgba(239, 68, 68, 0.2); color: #fca5a5; }
.coord-axis.y { background: rgba(16, 185, 129, 0.2); color: #6ee7b7; }
.coord-axis.z { background: rgba(48, 57, 66, 0.14); color: var(--brand-dark); }

.coord-values {
    flex: 1;
    display: flex;
    justify-content: space-between;
    gap: var(--space-md);
}

.coord-machine, .coord-work {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.coord-label {
    font-size: 0.6875rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.coord-value {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
}

/* 控制按钮 */
.control-buttons {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
}

.ctrl-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-md) var(--space-sm);
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-family: var(--font-body);
    font-size: 0.8125rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.ctrl-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-light);
    color: var(--text-primary);
}

.ctrl-btn:active {
    transform: scale(0.95);
}

.ctrl-btn svg {
    width: 20px;
    height: 20px;
}

.ctrl-btn.warning {
    color: var(--danger);
    border-color: rgba(239, 68, 68, 0.3);
}

.ctrl-btn.warning:hover {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--danger);
}

/* 输出按钮 */
.output-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.output-control {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

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

.output-group-title {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: var(--space-sm);
}

.output-group-title span {
    color: var(--text-primary);
    font-weight: 600;
}

.output-group-title small {
    color: var(--text-muted);
    font-size: 0.75rem;
}

.spindle-command-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-sm);
}

.spindle-command-btn {
    appearance: none;
    -webkit-appearance: none;
    min-height: 60px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: var(--font-body);
    text-align: center;
}

.spindle-command-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary);
    color: var(--text-primary);
}

.spindle-command-btn:active {
    transform: scale(0.96);
}

.spindle-command-btn span {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--primary-light);
}

.spindle-command-btn small {
    font-size: 0.6875rem;
    color: var(--text-muted);
    white-space: nowrap;
}

.spindle-command-btn.stop {
    grid-column: 1 / -1;
    border-color: rgba(239, 68, 68, 0.35);
}

.spindle-command-btn.stop span {
    color: var(--danger);
}

.output-state-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-panel);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
}

.output-state-row strong {
    font-family: var(--font-display);
    color: var(--primary-light);
}

.coolant-switch-row {
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.coolant-switch-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.coolant-switch-info span {
    color: var(--text-primary);
    font-weight: 500;
}

.coolant-switch-info small {
    color: var(--text-muted);
    font-size: 0.75rem;
}

.toggle-switch {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
    user-select: none;
}

.toggle-switch input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.toggle-track {
    width: 54px;
    height: 30px;
    position: relative;
    display: inline-flex;
    align-items: center;
    padding: 3px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    transition: all 0.2s ease;
}

.toggle-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--text-muted);
    transition: all 0.2s ease;
}

.toggle-switch input:checked + .toggle-track {
    background: rgba(16, 185, 129, 0.25);
    border-color: var(--success);
    box-shadow: 0 0 12px var(--success-glow);
}

.toggle-switch input:checked + .toggle-track .toggle-thumb {
    transform: translateX(24px);
    background: var(--success);
}

.toggle-switch input:disabled + .toggle-track {
    opacity: 0.65;
    cursor: wait;
}

.toggle-switch em {
    min-width: 28px;
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-style: normal;
    color: var(--text-muted);
}

.toggle-switch em.on,
.output-state-row strong.on {
    color: var(--success);
}

.output-btn {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-family: var(--font-body);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
}

.output-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-light);
}

.output-btn:active {
    transform: scale(0.98);
}

.output-btn.on {
    border-color: var(--success);
    background: rgba(16, 185, 129, 0.1);
}

.output-btn.on .output-state {
    background: var(--success);
    color: white;
    box-shadow: 0 0 12px var(--success-glow);
}

.output-icon {
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.output-icon svg {
    width: 20px;
    height: 20px;
}

.output-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.output-name {
    font-size: 0.9375rem;
    color: var(--text-primary);
}

.output-pin {
    font-family: var(--font-display);
    font-size: 0.75rem;
    color: var(--primary-light);
}

.output-state {
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    transition: all 0.3s ease;
}

/* ===== 终端 ===== */
.terminal-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--space-xl);
}

.terminal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    background: var(--brand-black);
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.terminal-header h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    color: white;
    font-weight: 800;
}

.terminal-actions {
    display: flex;
    gap: var(--space-sm);
}

.term-btn {
    padding: var(--space-xs) var(--space-sm);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: var(--radius-sm);
    color: rgba(255, 255, 255, 0.78);
    font-family: var(--font-body);
    font-size: 0.8125rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.term-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.terminal-body {
    height: 240px;
    overflow-y: auto;
    padding: var(--space-md);
    background: #070707;
}

.terminal-output {
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
    color: #d1d5db;
}

.terminal-line {
    padding: 1px 0;
}

.terminal-line.incoming {
    color: #f3f4f6;
}

.terminal-line.outgoing {
    color: var(--primary-light);
}

.terminal-line.error {
    color: var(--danger);
}

.terminal-line.system {
    color: var(--warning);
}

.terminal-line.warning {
    color: var(--warning);
}

.terminal-input {
    display: flex;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    background: #111111;
    border-top: 1px solid var(--border-color);
}

.terminal-input input {
    flex: 1;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: var(--space-sm) var(--space-md);
    color: var(--text-primary);
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.9375rem;
}

.terminal-input input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(229, 0, 25, 0.12);
}

.terminal-input input::placeholder {
    color: var(--text-muted);
}

/* ===== 固件说明 ===== */
.firmware-note {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-left: 5px solid var(--primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.note-icon {
    width: 24px;
    height: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--brand-black);
    border-bottom: 3px solid var(--primary);
    border-radius: var(--radius-sm);
    color: white;
    font-size: 0.875rem;
    font-weight: 800;
    flex-shrink: 0;
}

.note-content {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
}

.note-content strong {
    color: var(--primary);
}

.note-content code {
    background: var(--bg-tertiary);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-family: 'Consolas', monospace;
    font-size: 0.875rem;
    color: var(--primary);
}

.note-detail {
    margin-top: var(--space-sm);
    color: var(--text-muted);
}

.driver-note {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-xs) var(--space-sm);
}

.driver-note a {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 2px 10px;
    background: var(--brand-black);
    border-radius: var(--radius-sm);
    color: white;
    font-size: 0.8125rem;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.2s ease;
}

.driver-note a:hover {
    background: var(--primary);
}

/* ===== 模态框 ===== */
.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;
    padding: var(--space-lg);
}

.modal.show {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    max-width: 600px;
    width: 100%;
    max-height: 80vh;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    background: var(--brand-black);
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-family: var(--font-display);
    font-size: 1.125rem;
    color: white;
}

.modal-close {
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.74);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.2s;
}

.modal-close:hover {
    color: white;
}

.modal-body {
    padding: var(--space-lg);
    overflow-y: auto;
    max-height: 50vh;
    color: var(--text-secondary);
    line-height: 1.7;
}

.modal-body code {
    background: var(--bg-tertiary);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-family: 'Consolas', monospace;
    font-size: 0.875rem;
    color: var(--primary);
}

.modal-body pre {
    background: var(--bg-primary);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: var(--space-md) 0;
}

.modal-footer {
    padding: var(--space-lg);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
}

.modal-footer .btn {
    width: auto;
    padding: var(--space-sm) var(--space-xl);
}

.port-select-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin: var(--space-md) 0;
}

.port-select-btn {
    width: 100%;
    justify-content: flex-start;
    text-align: left;
}

.port-select-btn strong {
    min-width: 72px;
    font-family: var(--font-display);
}

.port-select-btn span {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* ===== 页脚 ===== */
.main-footer {
    text-align: center;
    min-height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl);
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.875rem;
    background: var(--brand-black);
    border-top: 0;
    border-bottom: 44px solid var(--brand-dark);
    margin-top: var(--space-xl);
    margin-left: calc(-1 * var(--space-lg));
    margin-right: calc(-1 * var(--space-lg));
}

.main-footer p {
    max-width: 900px;
}

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

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-light);
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .app-container {
        padding: var(--space-md);
    }
    
    .header-content {
        flex-direction: column;
        text-align: center;
    }

    .logo {
        justify-content: center;
    }

    .brand-logo {
        width: min(180px, 70vw);
    }

    .section-header {
        grid-template-columns: auto 1fr;
        align-items: start;
    }
    
    .connect-row {
        flex-direction: column;
        align-items: stretch;
    }
    
    .baud-rate {
        margin-left: 0;
        justify-content: space-between;
    }
    
    .control-buttons {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .status-display {
        grid-template-columns: 1fr;
    }
    
    .coord-values {
        flex-direction: column;
        gap: var(--space-xs);
    }
    
    .terminal-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .terminal-actions {
        flex-wrap: wrap;
    }
}

/* ===== 烧录按钮 ===== */
.btn-program {
    margin-top: var(--space-sm);
    background: var(--primary);
    border-color: transparent;
    color: white;
    box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-program:hover {
    background: var(--primary-dark);
    color: white;
    box-shadow: 0 6px 20px var(--primary-glow);
}

/* ===== 烧录进度 ===== */
.program-section {
    animation: fadeIn 0.3s ease;
}

.program-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.program-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.program-name {
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--text-primary);
}

.program-stage {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: var(--space-md);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    border-radius: 4px;
    transition: width 0.3s ease;
    box-shadow: 0 0 10px var(--primary-glow);
}

.program-actions {
    display: flex;
    justify-content: flex-end;
}

.btn-cancel {
    width: auto;
    background: var(--danger);
    border-color: transparent;
    color: white;
}

/* ===== Jog 控制 ===== */
.jog-panel {
    grid-column: span 1;
}

.jog-settings {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--border-color);
}

.jog-setting {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.jog-setting label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.jog-steps {
    display: flex;
    gap: var(--space-xs);
}

.step-btn {
    flex: 1;
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-display);
    font-size: 0.8125rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.step-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.step-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    box-shadow: 0 0 10px var(--primary-glow);
}

.jog-setting input {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: var(--space-sm) var(--space-md);
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: 0.9375rem;
    width: 100%;
}

.jog-setting input:focus {
    outline: none;
    border-color: var(--primary);
}

.jog-pad {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

.jog-row {
    display: flex;
    gap: var(--space-sm);
    align-items: center;
    justify-content: center;
    width: 100%;
}

.jog-empty {
    width: 64px;
    height: 64px;
}

.jog-btn {
    width: 64px;
    height: 64px;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    cursor: pointer;
    transition: all 0.1s ease;
    user-select: none;
    -webkit-user-select: none;
    touch-action: manipulation;
}

.jog-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-light);
    color: var(--text-primary);
}

.jog-btn:active {
    transform: scale(0.92);
}

.jog-btn svg {
    width: 16px;
    height: 16px;
}

.jog-btn .axis-label {
    font-family: var(--font-display);
    font-size: 0.6875rem;
    font-weight: 700;
}

.jog-btn .axis-label.x { color: #fca5a5; }
.jog-btn .axis-label.y { color: #6ee7b7; }
.jog-btn .axis-label.z { color: var(--brand-dark); }

.jog-home {
    background: rgba(229, 0, 25, 0.08);
    border-color: rgba(229, 0, 25, 0.24);
}

.jog-home:hover {
    background: rgba(229, 0, 25, 0.14);
    border-color: var(--primary);
}

.jog-home span {
    font-size: 0.625rem;
    color: var(--primary-light);
}

.z-row {
    margin-top: var(--space-sm);
    padding-top: var(--space-sm);
    border-top: 1px solid var(--border-color);
}

.z-btn {
    width: 80px;
    height: 48px;
    flex-direction: row;
    gap: var(--space-sm);
}

/* ===== XYZ 信号灯测试 ===== */
.signal-settings {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.signal-setting {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.signal-setting label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.signal-setting input {
    width: 100%;
    min-width: 0;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: var(--space-sm);
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: 0.875rem;
}

.signal-setting input:focus {
    outline: none;
    border-color: var(--primary);
}

.signal-buttons {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-sm);
}

.signal-btn {
    min-height: 68px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.signal-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-light);
    color: var(--text-primary);
}

.signal-btn:active,
.signal-btn.running {
    transform: scale(0.96);
    border-color: var(--primary);
    box-shadow: 0 0 14px var(--primary-glow);
}

.signal-btn span {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
}

.signal-btn small {
    font-size: 0.6875rem;
    color: var(--text-muted);
}

.signal-btn.axis-x span { color: #fca5a5; }
.signal-btn.axis-y span { color: #6ee7b7; }
.signal-btn.axis-z span { color: #7dd3fc; }
.signal-btn.all span { color: var(--warning); }

.signal-hint {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-xs);
    margin-top: var(--space-md);
    color: var(--text-muted);
    font-size: 0.75rem;
}

.signal-hint-row {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    line-height: 1.35;
}

.signal-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    display: inline-block;
}

.signal-dot.en { background: var(--success); box-shadow: 0 0 8px var(--success-glow); }
.signal-dot.dir { background: var(--warning); box-shadow: 0 0 8px var(--warning-glow); }
.signal-dot.clk { background: var(--primary); box-shadow: 0 0 8px var(--primary-glow); }

@media (max-width: 768px) {
    .signal-settings,
    .signal-buttons {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

.section {
    animation: fadeIn 0.5s ease forwards;
}

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