/* ============================================
   油品指标智能可视化平台 - 样式表
   ============================================ */

/* 说明：该样式表同时服务于首页（index.html）与车间看板（workshop.html）。 */

/* CSS 变量 - 浅蓝色主题 */
:root {
    --primary: #3a6ea8;
    --secondary: #3a6ea5;
    --accent: #ed8936;
    --background: #e8f0f8;
    --card: #ffffff;
    --success: #38a169;
    --warning: #d69e2e;
    --danger: #e53e3e;
    --text: #1e293b;
    --text-light: #64748b;
    --border: #cbd5e1;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --radius: 12px;
    --radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--background);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Exo 2', sans-serif;
    font-weight: 600;
    line-height: 1.3;
}

.mono {
    font-family: 'Roboto Mono', monospace;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================
   登录界面样式 - 浅色配色
   ============================================ */
.login-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #e8f0f8 0%, #d6e3f0 50%, #c5d8e8 100%);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-container {
    background: var(--card);
    border-radius: var(--radius-lg);
    box-shadow: 0 25px 50px -12px rgba(30, 58, 95, 0.25);
    width: 100%;
    max-width: 420px;
    padding: 40px;
    animation: loginSlideIn 0.6s ease;
}

@keyframes loginSlideIn {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-logo {
    font-size: 4rem;
    margin-bottom: 16px;
}

.login-header h2 {
    color: var(--primary);
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.login-header p {
    color: var(--text-light);
    font-size: 0.9rem;
}

.login-form .form-group {
    margin-bottom: 20px;
}

.login-form label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
}

.login-form input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    color: var(--text);
    background: var(--card);
    transition: var(--transition);
}

.login-form input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.1);
}

.form-error {
    color: var(--danger);
    font-size: 0.85rem;
    margin-bottom: 16px;
    min-height: 20px;
}

.login-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(30, 58, 95, 0.3);
}

.login-footer {
    margin-top: 24px;
    text-align: center;
}

.login-footer p {
    color: var(--text-light);
    font-size: 0.8rem;
}

/* ============================================
   导航栏 - 浅色配色
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

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

.logo img {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.logo-text {
    font-family: 'Exo 2', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    transition: var(--transition);
    position: relative;
}

.nav-links a:hover {
    color: var(--primary);
    background: rgba(30, 58, 95, 0.08);
    transform: translateY(-2px);
}

.nav-links a.active {
    color: var(--primary);
    background: rgba(30, 58, 95, 0.12);
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
}

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

.user-name {
    font-size: 0.9rem;
    color: var(--text-light);
}

.user-avatar {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.9rem;
}

/* 流向详情面板 */
.flow-detail-panel {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 380px;
    max-height: calc(100% - 40px);
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
    transform: translateX(420px);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    overflow-y: auto;
}

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

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.98);
}

.close-btn {
    width: 28px;
    height: 28px;
    border: none;
    background: rgba(0, 0, 0, 0.05);
    color: var(--text-light);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.panel-content {
    padding: 20px;
}

.placeholder-text {
    text-align: center;
    color: var(--text-light);
    font-size: 0.9rem;
    padding: 40px 0;
}

/* 流向详情内容样式 */
.flow-detail-content .detail-section {
    margin-bottom: 16px;
    padding: 12px;
    background: rgba(58, 110, 165, 0.05);
    border-radius: 8px;
    border-left: 3px solid #3a6ea5;
}

.flow-detail-content .detail-section h5 {
    font-size: 0.9rem;
    color: #1e3a5f;
    margin-bottom: 8px;
    font-weight: 600;
}

.flow-detail-content .detail-section p {
    font-size: 0.9rem;
    color: #334155;
    line-height: 1.5;
}

.ratio-bar {
    display: flex;
    height: 28px;
    border-radius: 6px;
    overflow: hidden;
    font-size: 0.75rem;
    color: white;
    font-weight: 600;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.ratio-item {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 50px;
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

.flow-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.flow-list li {
    padding: 8px 0;
    border-bottom: 1px solid #e2e8f0;
    color: #475569;
    font-size: 0.9rem;
    font-weight: 500;
}

.flow-list li:last-child {
    border-bottom: none;
}

/* ============================================
   主视觉区 - 浅蓝色背景
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, #e8f0f8 0%, #d6e3f0 50%, #c5d8e8 100%);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(30, 58, 95, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(30, 58, 95, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

#particleCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 120px 24px 60px;
    max-width: 900px;
}

.hero-title {
    margin-bottom: 24px;
}

.title-line {
    display: block;
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -1px;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

.title-line.highlight {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 50%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation-delay: 0.2s;
}

.hero-subtitle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 48px;
    opacity: 0;
    animation: fadeIn 0.8s ease 0.4s forwards;
}

.subtitle-item {
    font-size: 1.1rem;
    color: var(--text-light);
    font-weight: 500;
}

.separator {
    color: var(--accent);
    font-weight: 700;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
}

.stat-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    padding: 28px 36px;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.5);
    transition: var(--transition-bounce);
    opacity: 0;
    transform: rotateX(90deg);
    animation: flipIn 0.8s ease forwards;
}

.stat-card:nth-child(1) { animation-delay: 0.5s; }
.stat-card:nth-child(2) { animation-delay: 0.6s; }
.stat-card:nth-child(3) { animation-delay: 0.7s; }

.stat-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 25px 50px -12px rgba(30, 58, 95, 0.15);
}

.stat-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
}

.stat-value {
    font-family: 'Roboto Mono', monospace;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-light);
    font-weight: 500;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--text-light);
    font-size: 0.85rem;
    opacity: 0;
    animation: fadeIn 1s ease 1s forwards;
}

.mouse {
    width: 26px;
    height: 40px;
    border: 2px solid var(--text-light);
    border-radius: 13px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--text-light);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 2s ease infinite;
}

/* ============================================
   控制面板
   ============================================ */
.control-panel {
    padding: 60px 0;
    background: var(--background);
}

.panel-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
}

.panel-card {
    background: var(--card);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: var(--transition);
}

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

.panel-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 20px;
}

.panel-title .icon {
    font-size: 1.3rem;
}

.date-input-group {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.date-picker {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    color: var(--text);
    background: var(--card);
    transition: var(--transition);
    cursor: pointer;
}

.date-picker:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.1);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(58, 110, 165, 0.3);
}

.btn-secondary {
    background: var(--background);
    color: var(--text);
    border: 2px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-success {
    background: linear-gradient(135deg, var(--success), #2f855a);
    color: white;
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(56, 161, 105, 0.3);
}

.btn-info {
    background: linear-gradient(135deg, var(--secondary), #4a7ab8);
    color: white;
}

.btn-info:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(58, 110, 165, 0.3);
}

.btn-predict {
    background: linear-gradient(135deg, var(--accent), #dd6b20);
    color: white;
    width: 100%;
}

.btn-predict:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(237, 137, 54, 0.3);
}

.date-info {
    padding: 16px;
    background: rgba(30, 58, 95, 0.03);
    border-radius: var(--radius);
}

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

.info-label {
    font-size: 0.9rem;
    color: var(--text-light);
}

.info-value {
    font-family: 'Roboto Mono', monospace;
    font-weight: 600;
    color: var(--primary);
}

.info-value.highlight {
    color: var(--accent);
    font-size: 1.1rem;
}

/* 导入区域 */
.import-area {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 32px;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
}

.import-area:hover {
    border-color: var(--primary);
    background: rgba(30, 58, 95, 0.02);
}

.import-area.dragover {
    border-color: var(--accent);
    background: rgba(237, 137, 54, 0.05);
}

.import-icon {
    font-size: 3rem;
    margin-bottom: 12px;
}

.import-text {
    font-size: 1rem;
    color: var(--text);
    margin-bottom: 4px;
}

.import-subtext {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 16px;
}

.file-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: rgba(56, 161, 105, 0.1);
    border-radius: var(--radius);
    margin-bottom: 16px;
}

.file-name {
    font-size: 0.9rem;
    color: var(--success);
    font-weight: 500;
}

.btn-icon {
    width: 28px;
    height: 28px;
    border: none;
    background: rgba(229, 62, 62, 0.1);
    color: var(--danger);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.action-buttons {
    display: flex;
    gap: 12px;
}

.action-buttons .btn {
    flex: 1;
}

/* 数据管理：三个按钮直接展示，布局紧凑且可换行 */
.panel-card.data-import .action-buttons {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    align-items: center;
    width: 100%;
    max-width: 560px;
    margin: 0 auto;
}

.panel-card.data-import .action-buttons .btn {
    width: auto;
    max-width: 100%;
    flex: 0 1 220px;
    justify-content: center;
    padding: 10px 14px;
    font-size: 0.9rem;
    line-height: 1.2;
    border-radius: var(--radius);
    white-space: nowrap;
}

@media (max-width: 520px) {
    .panel-card.data-import .action-buttons {
        max-width: 100%;
    }

    .panel-card.data-import .action-buttons .btn {
        flex: 1 1 100%;
        white-space: normal;
    }
}

/* 当日原油信息 */
.oil-info-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.oil-info-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 16px;
    background: rgba(30, 58, 95, 0.03);
    border-radius: var(--radius);
}

/* ============================================
   区块标题
   ============================================ */
.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-title {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    color: var(--primary);
    margin-bottom: 12px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   原油配比分析
   ============================================ */
.ratio-analysis {
    padding: 80px 0;
    background: linear-gradient(180deg, var(--background) 0%, #dce7f2 100%);
}

.ratio-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.ratio-chart-container {
    position: relative;
    height: 400px;
}

#ratioChart {
    max-height: 400px;
}

.chart-center-info {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    pointer-events: none;
}

.center-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 4px;
}

.center-value {
    display: block;
    font-family: 'Roboto Mono', monospace;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

.ratio-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.oil-type-card {
    background: var(--card);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: var(--transition);
    cursor: pointer;
}

.oil-type-card:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-lg);
}

.oil-type-card.malinmu {
    border-left: 4px solid #1e3a5f;
}

.oil-type-card.chengbei {
    border-left: 4px solid #2c5282;
}

.oil-type-card.longkado {
    border-left: 4px solid #ed8936;
}

.oil-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.oil-color {
    width: 16px;
    height: 16px;
    border-radius: 50%;
}

.oil-name {
    flex: 1;
    font-size: 1.1rem;
    color: var(--text);
}

.oil-percentage {
    font-family: 'Roboto Mono', monospace;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.oil-properties {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.property {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.prop-label {
    font-size: 0.8rem;
    color: var(--text-light);
}

.prop-value {
    font-family: 'Roboto Mono', monospace;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text);
}

.oil-note {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px;
    background: rgba(237, 137, 54, 0.1);
    border-radius: var(--radius);
}

.note-icon {
    font-size: 1rem;
}

.note-text {
    font-size: 0.85rem;
    color: var(--accent);
}

/* ============================================
   装置原料流向监控 - 加深颜色
   ============================================ */
.flow-monitor {
    padding: 80px 0;
    background: var(--background);
}

.flow-container {
    position: relative;
    background: var(--card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.flow-svg {
    width: 100%;
    height: 500px;
    display: block;
}

.flow-line {
    fill: none;
    stroke: url(#lineGradient);
    stroke-width: 3;
    stroke-linecap: round;
    opacity: 0.95;
    transition: var(--transition);
}

.flow-line.active {
    opacity: 1;
    stroke-width: 4;
    filter: url(#glow);
}

.flow-node {
    cursor: pointer;
    transition: var(--transition);
}

.flow-node:hover {
    filter: url(#3d-effect) brightness(1.15);
}

.flow-node:hover .node-circle {
    filter: brightness(1.1);
}

.node-circle {
    transition: var(--transition);
    stroke: rgba(0,0,0,0.5);
    stroke-width: 2px;
}

.node-rect {
    transition: var(--transition);
    stroke: rgba(0,0,0,0.5);
    stroke-width: 2px;
}

.node-pulse {
    animation: pulse 2s ease infinite;
}

.node-label {
    fill: white;
    font-size: 13px;
    font-weight: 700;
    text-anchor: middle;
    pointer-events: none;
    text-shadow: 0 2px 4px rgba(0,0,0,0.8);
}

.node-sublabel {
    fill: #b0c4de;
    font-size: 10px;
    text-anchor: middle;
    pointer-events: none;
    text-shadow: 0 1px 3px rgba(0,0,0,0.8);
}

.flow-particles circle {
    fill: #ed8936;
    r: 5;
    filter: url(#glow);
}

.node-circle {
    transition: var(--transition);
    stroke: rgba(0,0,0,0.5);
    stroke-width: 2px;
}

.node-rect {
    transition: var(--transition);
    stroke: rgba(0,0,0,0.5);
    stroke-width: 2px;
}

.node-pulse {
    animation: pulse 2s ease infinite;
}

.node-label {
    fill: white;
    font-size: 13px;
    font-weight: 700;
    text-anchor: middle;
    pointer-events: none;
    text-shadow: 0 2px 4px rgba(0,0,0,0.8);
}

.node-sublabel {
    fill: #b0c4de;
    font-size: 10px;
    text-anchor: middle;
    pointer-events: none;
    text-shadow: 0 1px 3px rgba(0,0,0,0.8);
}

.flow-particles circle {
    fill: #ed8936;
    r: 5;
    filter: url(#glow);
}

.flow-node:hover .node-circle {
    filter: url(#glow) brightness(1.1);
}

.node-circle {
    transition: var(--transition);
    stroke: rgba(255,255,255,0.3);
    stroke-width: 2px;
}

.node-rect {
    transition: var(--transition);
    stroke: rgba(255,255,255,0.3);
    stroke-width: 2px;
}

.node-pulse {
    animation: pulse 2s ease infinite;
}

.node-label {
    fill: white;
    font-size: 13px;
    font-weight: 700;
    text-anchor: middle;
    pointer-events: none;
    text-shadow: 0 1px 3px rgba(0,0,0,0.5);
}

.node-sublabel {
    fill: #f1f5f9;
    font-size: 10px;
    text-anchor: middle;
    pointer-events: none;
    text-shadow: 0 1px 2px rgba(0,0,0,0.5);
}

.flow-particles circle {
    fill: var(--accent);
    r: 4;
    filter: url(#glow);
}

/* ============================================
   蒸馏车间数据看板
   ============================================ */
.distillation-board {
    padding: 80px 0;
    background: linear-gradient(180deg, #dce7f2 0%, var(--background) 100%);
}

.unit-tabs {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 32px;
}

.tab-btn {
    padding: 10px 24px;
    border: 2px solid var(--border);
    background: var(--card);
    color: var(--text);
    border-radius: 30px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

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

.tab-btn.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-color: transparent;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.product-card {
    background: var(--card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
    background-size: 200% 100%;
    animation: gradientMove 3s linear infinite;
}

@keyframes gradientMove {
    0% { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px;
    background: rgba(30, 58, 95, 0.03);
    border-bottom: 1px solid var(--border);
}

.product-name {
    font-size: 1.1rem;
    color: var(--primary);
}

.product-type {
    font-size: 0.8rem;
    padding: 4px 12px;
    background: rgba(30, 58, 95, 0.1);
    color: var(--primary);
    border-radius: 20px;
    font-weight: 500;
}

.card-body {
    padding: 20px;
}

.metric-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid rgba(203, 213, 225, 0.5);
}

.metric-row:last-child {
    border-bottom: none;
}

.metric-label {
    font-size: 0.85rem;
    color: var(--text-light);
}

.metric-value {
    font-family: 'Roboto Mono', monospace;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text);
}

.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background: rgba(30, 58, 95, 0.02);
    border-top: 1px solid var(--border);
}

.status-badge {
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.status-badge.normal {
    background: rgba(56, 161, 105, 0.15);
    color: var(--success);
}

.status-badge.warning {
    background: rgba(214, 158, 46, 0.15);
    color: var(--warning);
}

.status-badge.danger {
    background: rgba(229, 62, 62, 0.15);
    color: var(--danger);
}

/* 详情按钮样式修改 */
.detail-btn {
    padding: 8px 16px;
    background: transparent;
    border: 1.5px solid var(--secondary);
    color: var(--secondary);
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

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

.detail-btn-sm {
    width: 100%;
    padding: 8px;
    background: var(--secondary);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

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

/* ============================================
   加氢车间数据看板
   ============================================ */
.hydrogenation-board {
    padding: 80px 0;
    background: var(--background);
}

.hydro-units {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 32px;
}

.hydro-unit {
    background: var(--card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    overflow: hidden;
}

.unit-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
}

.unit-title {
    font-size: 1.2rem;
    font-weight: 600;
}

.unit-status {
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    animation: blink 2s ease infinite;
}

.status-dot.running {
    background: #48bb78;
    box-shadow: 0 0 8px #48bb78;
}

.status-text {
    font-size: 0.85rem;
    opacity: 0.9;
}

.unit-products {
    padding: 20px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 16px;
}

.product-card-small {
    background: rgba(30, 58, 95, 0.03);
    border-radius: var(--radius);
    padding: 16px;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.product-card-small:hover {
    background: rgba(30, 58, 95, 0.06);
    border-color: var(--primary);
    transform: translateY(-4px);
}

.product-card-small .product-name {
    font-size: 0.95rem;
    color: var(--primary);
    margin-bottom: 12px;
}

.product-metrics {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 12px;
}

.product-metrics .metric {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.product-metrics .metric-label {
    font-size: 0.75rem;
    color: var(--text-light);
}

.product-metrics .metric-value {
    font-family: 'Roboto Mono', monospace;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text);
}

.detail-btn-sm {
    width: 100%;
    padding: 8px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

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

/* ============================================
   倾点趋势分析
   ============================================ */
.trend-analysis {
    padding: 80px 0;
    background: linear-gradient(180deg, var(--background) 0%, #dce7f2 100%);
}

.prediction-control-panel {
    margin-bottom: 32px;
}

.prediction-models {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.model-card {
    background: var(--card);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    text-align: center;
}

.model-title {
    font-size: 1.1rem;
    color: var(--primary);
    margin-bottom: 8px;
}

.model-desc {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 16px;
}

.prediction-result {
    margin-top: 16px;
    padding: 12px;
    background: rgba(56, 161, 105, 0.1);
    border-radius: var(--radius);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.result-label {
    font-size: 0.9rem;
    color: var(--text-light);
}

.result-value {
    font-family: 'Roboto Mono', monospace;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--success);
}

.trend-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 24px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

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

.control-label {
    font-size: 0.9rem;
    color: var(--text-light);
    font-weight: 500;
}

.control-select {
    padding: 10px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.9rem;
    color: var(--text);
    background: var(--card);
    cursor: pointer;
    transition: var(--transition);
}

.control-select:focus {
    outline: none;
    border-color: var(--primary);
}

.trend-chart-container {
    position: relative;
}

.current-date-marker {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #e53e3e;
    pointer-events: none;
}

#trendChart {
    max-height: 400px;
}

.trend-insights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.insight-card {
    background: var(--card);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    border-left: 4px solid var(--primary);
}

.insight-card.alert {
    border-left-color: var(--warning);
}

.insight-title {
    font-size: 1rem;
    color: var(--primary);
    margin-bottom: 12px;
}

.insight-card.alert .insight-title {
    color: var(--warning);
}

.insight-text {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.7;
}

/* ============================================
   模态框
   ============================================ */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

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

.modal-container {
    background: var(--card);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 700px;
    max-height: 105vh;
    overflow: hidden;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    transform: scale(0.9) translateY(20px);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active .modal-container {
    transform: scale(1) translateY(0);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
}

.modal-title {
    font-size: 1.2rem;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

.modal-body {
    padding: 24px;
    overflow-y: auto;
    max-height: calc(85vh - 80px);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 24px;
    background: rgba(30, 58, 95, 0.03);
    border-top: 1px solid var(--border);
}

/* 详情表格 */
.detail-table {
    width: 100%;
    border-collapse: collapse;
}

.detail-table th,
.detail-table td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.detail-table th {
    background: rgba(30, 58, 95, 0.05);
    font-weight: 600;
    color: var(--primary);
    font-size: 0.85rem;
}

.detail-table td {
    font-size: 0.9rem;
    color: var(--text);
}

.detail-table tr:hover td {
    background: rgba(30, 58, 95, 0.02);
}

.detail-table .value-cell {
    font-family: 'Roboto Mono', monospace;
    font-weight: 500;
}

/* ============================================
   页脚
   ============================================ */
.footer {
    padding: 32px 0;
    background: var(--primary);
    color: white;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.copyright {
    font-size: 0.9rem;
    opacity: 0.8;
}

.footer-right {
    display: flex;
    gap: 24px;
}

.footer-link {
    color: white;
    text-decoration: none;
    font-size: 0.9rem;
    opacity: 0.8;
    transition: var(--transition);
}

.footer-link:hover {
    opacity: 1;
    text-decoration: underline;
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes flipIn {
    from {
        opacity: 0;
        transform: rotateX(90deg);
    }
    to {
        opacity: 1;
        transform: rotateX(0);
    }
}

@keyframes scrollWheel {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(12px);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 0.8;
    }
    50% {
        transform: scale(1.5);
        opacity: 0;
    }
    100% {
        transform: scale(1);
        opacity: 0;
    }
}

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

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 1024px) {
    .ratio-grid {
        grid-template-columns: 1fr;
    }

    .hydro-units {
        grid-template-columns: 1fr;
    }

    .flow-detail-panel {
        position: relative;
        top: auto;
        right: auto;
        width: 100%;
        transform: none;
        margin-top: 20px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero-stats {
        flex-direction: column;
        align-items: center;
    }

    .stat-card {
        width: 100%;
        max-width: 280px;
    }

    .panel-grid {
        grid-template-columns: 1fr;
    }

    .date-input-group {
        flex-direction: column;
    }

    .action-buttons {
        flex-direction: column;
    }

    .oil-properties {
        grid-template-columns: 1fr;
    }

    .trend-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .control-group {
        flex-direction: column;
        align-items: flex-start;
    }

    .prediction-models {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-right {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-content {
        padding: 100px 16px 40px;
    }

    .hero-subtitle {
        flex-direction: column;
        gap: 8px;
    }

    .separator {
        display: none;
    }

    .products-grid {
        grid-template-columns: 1fr;
    }

    .unit-products {
        grid-template-columns: 1fr;
    }

    .trend-insights {
        grid-template-columns: 1fr;
    }
}

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

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

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

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

/* ============================================
   打印样式 - 报告使用浅色背景
   ============================================ */
@media print {
    .navbar,
    .scroll-indicator,
    .control-panel,
    .flow-detail-panel,
    .modal-overlay {
        display: none !important;
    }

    .hero {
        min-height: auto;
        padding: 40px 0;
    }

    section {
        page-break-inside: avoid;
    }

    body {
        background: white !important;
        color: black !important;
    }

    .report-content {
        background: white !important;
        color: black !important;
    }

    .report-table th {
        background: #f0f4f8 !important;
        color: black !important;
    }

    .report-table td {
        color: black !important;
    }

}
.report-table {
    width: 90% !important;
    margin-left: auto !important;
    margin-right: auto !important;
    border-collapse: collapse;
}

/* ============================================
   车间看板导出面板样式 - 新增
   ============================================ */
.export-panel-section {
    padding: 20px 0 40px;
}

.export-panel-card {
    background: var(--card);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
}

.export-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--background);
}

.export-panel-header .panel-title {
    margin-bottom: 0;
}

.export-badge {
    background: linear-gradient(135deg, #217346, #1e5c3a);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.export-form-container {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.export-field-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.export-field {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.export-field.full-width {
    grid-column: 1 / -1;
}

.export-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--primary);
}

.field-icon {
    font-size: 1.1rem;
}

.export-select {
    padding: 14px 18px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    color: var(--text);
    background: var(--card);
    cursor: pointer;
    transition: var(--transition);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%233a6ea8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

.export-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(58, 110, 165, 0.1);
}

.export-hint {
    font-size: 0.8rem;
    color: var(--text-light);
    font-style: italic;
}

.export-label-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.selected-count {
    background: rgba(58, 110, 165, 0.1);
    color: var(--primary);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

.time-range-group {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.radio-card {
    flex: 1;
    min-width: 100px;
    cursor: pointer;
    position: relative;
}

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

.radio-text {
    display: block;
    padding: 14px 20px;
    background: var(--background);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    text-align: center;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text);
    transition: var(--transition);
}

.radio-card:hover .radio-text {
    border-color: var(--primary);
    background: rgba(58, 110, 165, 0.05);
}

.radio-card input[type="radio"]:checked + .radio-text {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(58, 110, 165, 0.3);
}

.metrics-checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 12px;
    padding: 16px;
    background: rgba(30, 58, 95, 0.03);
    border-radius: var(--radius);
    border: 2px solid var(--border);
}

.metric-checkbox-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: var(--card);
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
}

.metric-checkbox-item:hover {
    border-color: var(--primary);
    background: rgba(58, 110, 165, 0.05);
}

.metric-checkbox-item.selected {
    background: rgba(58, 110, 165, 0.1);
    border-color: var(--primary);
}

.metric-checkbox-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary);
}

.metric-checkbox-item label {
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text);
    font-weight: 500;
    flex: 1;
}

.export-actions-row {
    display: flex;
    align-items: stretch;
    gap: 20px;
    margin-top: 8px;
}

.export-preview-box {
    flex: 1;
    background: linear-gradient(135deg, rgba(58, 110, 165, 0.05), rgba(58, 110, 165, 0.02));
    border-radius: var(--radius);
    padding: 16px 20px;
    border-left: 4px solid var(--primary);
}

.preview-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.preview-content {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.5;
}

.export-download-btn {
    min-width: 180px;
    padding: 16px 32px;
    font-size: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.export-download-btn:disabled {
    background: var(--border);
    cursor: not-allowed;
    opacity: 0.7;
}

.export-download-btn:not(:disabled) {
    background: linear-gradient(135deg, #217346, #1e5c3a);
    box-shadow: 0 4px 15px rgba(33, 115, 70, 0.3);
}

.export-download-btn:not(:disabled):hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(33, 115, 70, 0.4);
}

.export-download-btn .btn-icon {
    font-size: 1.3rem;
}

.export-download-btn .btn-text {
    font-size: 0.95rem;
    font-weight: 600;
}

/* 导出面板响应式 */
@media (max-width: 768px) {
    .export-field-group {
        grid-template-columns: 1fr;
    }

    .time-range-group {
        flex-direction: column;
    }

    .radio-card {
        min-width: auto;
    }

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

    .export-actions-row {
        flex-direction: column;
    }

    .export-download-btn {
        width: 100%;
    }

    .export-panel-card {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .metrics-checkbox-grid {
        grid-template-columns: 1fr;
    }

    .export-panel-header {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }
}

/* 无数据提示样式 */
.no-data {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-light);
    font-size: 1rem;
    grid-column: 1 / -1;
}

/* 产品卡片状态样式 */
.product-card.normal {
    border-left: 4px solid var(--success);
}

.product-card.warning {
    border-left: 4px solid var(--warning);
}

.product-card.danger {
    border-left: 4px solid var(--danger);
}