/* MakerGen - 青少年物联网创新平台 */
/* 全局样式 */

/* CSS 变量定义 */
:root {
    /* 主色调 - 活力蓝绿色系 */
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --primary-light: #dbeafe;
    --secondary-color: #10b981;
    --secondary-hover: #059669;
    
    /* 活力辅助色 */
    --accent-orange: #f97316;
    --accent-green: #10b981;
    --accent-pink: #ec4899;
    
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
    
    /* 中性色 */
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --border-color: #e5e7eb;
    --background-color: #f9fafb;
    --card-background: #ffffff;
    
    /* 状态色 */
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --info-color: #3b82f6;
    
    /* 间距 - 8px基准 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 2.5rem;
    
    /* 圆角 */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* 引入字体 */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700&display=swap');

/* 重置样式 */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    line-height: 1.5;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--text-primary);
    background-color: var(--background-color);
    min-height: 100vh;
}

a {
    color: var(--primary-color);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}


/* ==================== 图标系统 ==================== */
.icon {
    width: 1em;
    height: 1em;
    display: inline-block;
    vertical-align: middle;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
}

.icon-sm {
    width: 0.875em;
    height: 0.875em;
}

.icon-lg {
    width: 1.25em;
    height: 1.25em;
}

/* 按钮内的图标对齐 */
.btn .icon {
    margin-right: 0.25rem;
}

/* 复制按钮成功动画 */
.copy-btn {
    position: relative;
}

.copy-btn.success::after {
    content: '已复制!';
    position: absolute;
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--success-color);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    white-space: nowrap;
    animation: fadeInOut 2s ease;
    pointer-events: none;
    z-index: 10;
}

@keyframes fadeInOut {
    0%, 100% { opacity: 0; transform: translateX(-50%) translateY(5px); }
    20%, 80% { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ==================== 工具类系统 ==================== */

/* 间距工具类 */
.m-0 { margin: 0; }
.m-1 { margin: 0.5rem; }
.m-2 { margin: 1rem; }
.m-3 { margin: 1.5rem; }
.m-4 { margin: 2rem; }
.m-5 { margin: 2.5rem; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 2.5rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-5 { margin-bottom: 2.5rem; }

.ml-1 { margin-left: 0.5rem; }
.ml-2 { margin-left: 1rem; }
.mr-1 { margin-right: 0.5rem; }
.mr-2 { margin-right: 1rem; }

.mx-auto { margin-left: auto; margin-right: auto; }

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }

.pt-1 { padding-top: 0.5rem; }
.pt-2 { padding-top: 1rem; }
.pb-1 { padding-bottom: 0.5rem; }
.pb-2 { padding-bottom: 1rem; }

/* 页面标准间距 */
.page-section { margin-top: 2rem; }
.card-section { margin-top: 1.5rem; }
.form-section { margin-top: 1rem; }

/* 字体大小工具类 */
.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }
.text-4xl { font-size: 2.25rem; }

/* 字重 */
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

/* 文字颜色 */
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-error { color: var(--error-color); }

/* 布局工具类 */
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.flex-center { display: flex; justify-content: center; align-items: center; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }

/* 容器工具类 */
.container-narrow {
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.w-full { width: 100%; }

/* 显示/隐藏 */
.hidden { display: none !important; }
.block { display: block; }

/* 文字对齐 */
.text-center { text-align: center; }
.text-left { text-align: left; }

/* ==================== 容器 ==================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-sm {
    max-width: 480px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ==================== 导航栏 ==================== */
.navbar {
    background-color: var(--card-background);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
}

.navbar-nav {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
}

.nav-link {
    color: var(--text-secondary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: color 0.2s, background-color 0.2s;
}

.nav-link:hover, .nav-link.active {
    color: var(--primary-color);
    background-color: var(--primary-light);
    text-decoration: none;
}

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

.user-name {
    color: var(--text-primary);
    font-weight: 500;
}

/* 移动端导航 */
.navbar-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.navbar-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    transition: transform 0.3s, opacity 0.3s;
}

.navbar-mobile {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--card-background);
    padding: var(--spacing-lg);
    z-index: 99;
}

.navbar-mobile.active {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.nav-link-mobile {
    padding: var(--spacing-md);
    color: var(--text-primary);
    font-size: 1.125rem;
    border-radius: var(--radius-md);
    transition: background-color 0.2s;
}

.nav-link-mobile:hover {
    background-color: var(--background-color);
    text-decoration: none;
}

/* ==================== 卡片 ==================== */
.card {
    background-color: var(--card-background);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    padding: var(--spacing-sm) 0;
}

.card-highlight {
    background: var(--primary-light);
}

/* ==================== 表单 ==================== */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-grouped {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-section {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
}

.form-section-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.form-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
}

.form-input:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

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

.form-input.error {
    border-color: var(--error-color);
}

.form-error {
    color: var(--error-color);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

.form-hint {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

.form-radio-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.form-radio-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

textarea.form-input {
    min-height: 100px;
    resize: vertical;
}

/* ==================== 按钮 ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color 0.2s, transform 0.15s, box-shadow 0.2s;
}

.btn:hover {
    transform: translateY(-1px);
}

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

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

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

.btn-primary:hover:not(:disabled) {
    background-color: var(--primary-hover);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--secondary-hover);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover:not(:disabled) {
    background-color: var(--background-color);
}

.btn-danger {
    background-color: var(--error-color);
    color: white;
}

.btn-danger:hover:not(:disabled) {
    background-color: #dc2626;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.875rem;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1.125rem;
}

.btn-block {
    width: 100%;
}

.btn-group {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-icon {
    font-size: 1.25rem;
    line-height: 1;
}

/* ==================== 表格 ==================== */
.table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th, .table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    background-color: var(--background-color);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table tr:hover td {
    background-color: var(--primary-light);
}

.table-actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* ==================== 状态标签 ==================== */
.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
}

.badge-success {
    background-color: #d1fae5;
    color: #065f46;
}

.badge-warning {
    background-color: #fef3c7;
    color: #92400e;
}

.badge-error {
    background-color: #fee2e2;
    color: #991b1b;
}

.badge-info {
    background-color: #dbeafe;
    color: #1e40af;
}

/* 信息列表中的badge字体统一 - 完全继承父元素字体 */
.info-list-value .badge {
    font-size: inherit;
    font-weight: inherit;
    font-family: inherit;
    line-height: inherit;
    vertical-align: baseline;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xs) var(--spacing-sm);
}

/* ==================== 消息提示 ==================== */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #10b981;
}

.alert-error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid var(--error-color);
}

.alert-warning {
    background-color: #fef3c7;
    color: #92400e;
    border: 1px solid var(--warning-color);
}

.alert-info {
    background-color: #dbeafe;
    color: #1e40af;
    border: 1px solid var(--info-color);
}

.alert-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    margin-right: var(--spacing-md);
}

.alert-content {
    flex: 1;
}

.alert-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.alert-message {
    color: inherit;
}

.alert-actions {
    margin-top: var(--spacing-sm);
    display: flex;
    gap: var(--spacing-sm);
}

/* ==================== 页面布局 ==================== */
.page-header {
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.page-header-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2rem;
    margin-bottom: var(--spacing-xl);
}

.page-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.page-subtitle {
    color: var(--text-secondary);
}

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

/* ==================== 空状态 ==================== */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
}

.empty-state-illustration {
    margin-bottom: var(--spacing-lg);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.empty-state-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.empty-state-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.empty-state-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ==================== 加载状态 ==================== */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-xl);
}

.spinner {
    width: 2rem;
    height: 2rem;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* 骨架屏 */
.skeleton {
    animation: skeleton-loading 1.5s ease-in-out infinite;
}

@keyframes skeleton-loading {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.skeleton > * {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.5s ease-in-out infinite;
    border-radius: var(--radius-md);
}

@keyframes skeleton-shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-title {
    height: 1.5rem;
    width: 60%;
    margin-bottom: 1rem;
}

.skeleton-line {
    height: 1rem;
    margin-bottom: 0.5rem;
}

.skeleton-line.short {
    width: 40%;
}

.skeleton-badge {
    height: 1.5rem;
    width: 60px;
}

.skeleton-meta {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.skeleton-meta-item {
    height: 0.875rem;
    width: 80px;
}

/* ==================== 网格布局 ==================== */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* 响应式网格 */
.grid-responsive {
    grid-template-columns: 1fr;
}

@media (min-width: 640px) {
    .grid-responsive {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) {
    .grid-responsive-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .grid-responsive-3 {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .grid-responsive-4 {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ==================== 设备卡片 ==================== */
.device-card {
    background-color: var(--card-background);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.device-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.device-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.device-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

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

.device-key {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--background-color);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.device-key-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    flex-shrink: 0;
}

.device-key code {
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 0.75rem;
    color: var(--text-secondary);
    word-break: break-all;
}

.device-key .copy-btn {
    opacity: 0;
    transition: opacity 0.2s;
    flex-shrink: 0;
}

.device-card:hover .device-key .copy-btn {
    opacity: 1;
}

.device-meta {
    display: flex;
    gap: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.device-meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.device-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

/* ==================== 详情页布局 ==================== */
.detail-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-xl);
}

.detail-title {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.detail-subtitle {
    color: var(--text-secondary);
}

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

.detail-section-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--primary-color);
}

/* ==================== 信息列表 ==================== */
.info-list {
    list-style: none;
}

.info-list-item {
    display: flex;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-color);
}

.info-list-item:last-child {
    border-bottom: none;
}

.info-list-label {
    flex: 0 0 150px;
    color: var(--text-secondary);
    font-weight: 500;
}

.info-list-value {
    flex: 1;
    display: flex !important;
    align-items: center !important;
    color: var(--text-primary);
    word-break: break-all;
    overflow-wrap: break-word;
}

/* ==================== 模态框 ==================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background-color: var(--card-background);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        transform: translateY(-20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

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

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    padding: var(--spacing-xs);
    border-radius: var(--radius-md);
    transition: background-color 0.2s, color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background-color: var(--background-color);
    color: var(--text-primary);
}

.modal-close svg {
    width: 24px;
    height: 24px;
}

.modal-body {
    padding: var(--spacing-lg);
}

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

/* ==================== Toast 通知 ==================== */
.toast-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 1100;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-width: 400px;
}

.toast {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 300px;
    max-width: 400px;
    animation: slideIn 0.3s ease;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.toast-success {
    background-color: #d1fae5;
    border: 1px solid var(--success-color);
    color: #065f46;
}

.toast-error {
    background-color: #fee2e2;
    border: 1px solid var(--error-color);
    color: #991b1b;
}

.toast-warning {
    background-color: #fef3c7;
    border: 1px solid var(--warning-color);
    color: #92400e;
}

.toast-info {
    background-color: #dbeafe;
    border: 1px solid var(--info-color);
    color: #1e40af;
}

.toast-exit {
    animation: slideOut 0.3s ease forwards;
}

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

@keyframes slideOut {
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* ==================== 登录/注册页面 ==================== */
.auth-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-xl);
}

.auth-container {
    width: 100%;
    max-width: 400px;
}

.auth-logo {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.auth-logo h1 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.auth-logo p {
    color: var(--text-secondary);
}

.auth-card {
    background-color: var(--card-background);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xl);
}

.auth-footer {
    text-align: center;
    margin-top: var(--spacing-lg);
    color: var(--text-secondary);
}

/* ==================== 复制按钮 ==================== */
.copy-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--primary-color);
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: background-color 0.2s;
    font-size: 1rem;
}

.copy-btn:hover {
    background-color: var(--primary-light);
    color: var(--primary-hover);
}

/* ==================== 代码块 ==================== */
.code-block {
    background: var(--background-color);
    padding: 1rem;
    border-radius: var(--radius-md);
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 0.875rem;
    overflow-x: auto;
}

code {
    font-family: 'Fira Code', 'Consolas', monospace;
}

/* ==================== 可访问性 ==================== */
/* 屏幕阅读器专用 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* 焦点样式 */
*:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* 减少动画 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ==================== 动画 ==================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.page-content {
    animation: fadeInUp 0.5s ease-out;
}

/* ==================== 响应式隐藏 ==================== */
@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .navbar-content {
        flex-direction: row;
    }
    
    .navbar-nav {
        display: none;
    }
    
    .navbar-toggle {
        display: flex;
    }
    
    .hide-mobile {
        display: none;
    }
    
    .detail-header {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .device-meta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .page-header-flex {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .modal {
        width: 95%;
        margin: var(--spacing-md);
    }
    
    .toast-container {
        left: var(--spacing-md);
        right: var(--spacing-md);
        top: auto;
        bottom: var(--spacing-lg);
    }
    
    .toast {
        max-width: 100%;
        min-width: auto;
    }
}

@media (max-width: 480px) {
    .hide-mobile {
        display: none !important;
    }
    
    .device-actions {
        flex-wrap: wrap;
    }
    
    .device-actions .btn {
        flex: 1;
        min-width: 80px;
    }
}

@media (min-width: 769px) {
    .hide-desktop {
        display: none !important;
    }
}

/* ==================== 信息框 ==================== */
.info-box {
    background: var(--primary-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.info-box-title {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.info-box ul {
    color: var(--text-primary);
    padding-left: 1.5rem;
}

.info-box li {
    margin-bottom: 0.5rem;
}

/* ==================== 表单相关组件 ==================== */
.required-mark {
    color: var(--error-color);
}


/* ==================== 额外工具类 ==================== */
.list-unstyled {
    padding-left: 1.5rem;
}

.border-top {
    border-top: 1px solid var(--border-color);
}

.code-break {
    word-break: break-all;
}

.max-h-300 {
    max-height: 300px;
}

/* 内联spinner样式 */
.spinner-inline {
    width: 1rem;
    height: 1rem;
    border-width: 2px;
    display: inline-block;
    margin-right: 0.5rem;
}

/* ==================== 标签页组件 ==================== */
.tabs {
    display: flex;
    gap: var(--spacing-sm);
    border-bottom: 2px solid var(--border-color);
    margin-bottom: var(--spacing-lg);
}

.tab {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s;
}

.tab:hover {
    color: var(--primary-color);
}

.tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
}

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

/* ==================== 关键信息卡片 ==================== */
.key-info-grid {
    display: grid;
    gap: var(--spacing-lg);
}

.key-info-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.key-info-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.key-info-value-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.key-info-value {
    font-family: 'Fira Code', 'Consolas', monospace;
    background: var(--background-color);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--text-primary);
    word-break: break-all;
}

/* 响应式关键信息 */
@media (min-width: 768px) {
    .key-info-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 关键信息行内布局 */
.key-info-value-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--background-color);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
}

.key-info-value-row .key-info-value {
    flex: 1;
    background: none;
    padding: 0;
}

.copy-btn-inline {
    background: none;
    border: none;
    padding: var(--spacing-xs);
    cursor: pointer;
    color: var(--primary-color);
    border-radius: var(--radius-sm);
    transition: background-color 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.copy-btn-inline:hover {
    background-color: var(--primary-light);
}


/* ==================== 单选卡片样式 ==================== */
.form-radio-group {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.form-radio-card {
    flex: 1;
    min-width: 140px;
    cursor: pointer;
}

.form-radio-card input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.radio-card-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all 0.2s ease;
    text-align: center;
}

.form-radio-card:hover .radio-card-content {
    border-color: var(--primary-color);
    background: var(--primary-light);
}

.form-radio-card input[type="radio"]:checked + .radio-card-content {
    border-color: var(--primary-color);
    background: var(--primary-light);
}

.form-radio-card input[type="radio"]:focus-visible + .radio-card-content {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.radio-card-title {
    font-weight: 600;
    color: var(--text-primary);
}

.radio-card-desc {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* ==================== 表单验证动画 ==================== */
.form-input {
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-input.error {
    border-color: var(--error-color);
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.form-error {
    color: var(--error-color);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
    opacity: 0;
    transform: translateY(-5px);
    transition: opacity 0.2s, transform 0.2s;
}

.form-error.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==================== 改进的空状态 ==================== */
.empty-state-help {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.empty-state-help a {
    color: var(--primary-color);
    text-decoration: none;
}

.empty-state-help a:hover {
    text-decoration: underline;
}

/* ==================== 设备卡片信息展示 ==================== */
.device-info-section {
    background: var(--background-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.device-page-section {
    background: var(--primary-light);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.device-info-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    flex-wrap: nowrap;
}

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

.device-info-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
    width: 70px;
    flex-shrink: 0;
}

.device-info-value {
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 0.75rem;
    color: var(--text-primary);
    word-break: break-all;
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.device-info-value.flex-1 {
    flex: 1;
}

.btn-icon {
    background: none;
    border: none;
    padding: var(--spacing-xs);
    cursor: pointer;
    color: var(--primary-color);
    border-radius: var(--radius-sm);
    transition: background-color 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-icon:hover {
    background-color: var(--primary-light);
}

/* ==================== TAC 验证码居中 ==================== */
#tianai-captcha-parent {
    position: fixed !important;
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%) !important;
    z-index: 1100 !important;
}