/* 超级科技感产品货架样式 */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;500;600;700;800;900&family=Rajdhani:wght@400;500;600;700&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #00d4ff;
    --primary-light: #5ce1ff;
    --primary-dark: #0099cc;
    --primary-glow: rgba(0, 212, 255, 0.6);
    --secondary: #7c3aed;
    --secondary-light: #a78bfa;
    --accent: #00ff88;
    --accent-glow: rgba(0, 255, 136, 0.5);
    --warning: #fbbf24;
    --danger: #ef4444;
    --bg-dark: #030712;
    --bg-darker: #000000;
    --bg-card: rgba(10, 20, 40, 0.85);
    --bg-glass: rgba(255, 255, 255, 0.02);
    --border-glow: rgba(0, 212, 255, 0.4);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.65);
    --text-muted: rgba(255, 255, 255, 0.4);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Rajdhani', 'Segoe UI', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* 粒子画布 */
#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* 装饰光球 */
.glow-orb {
    position: fixed;
    border-radius: 50%;
    filter: blur(80px);
    pointer-events: none;
    z-index: 0;
}

.glow-orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.15) 0%, transparent 70%);
    top: -200px;
    left: -100px;
    animation: floatOrb1 20s ease-in-out infinite;
}

.glow-orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.12) 0%, transparent 70%);
    bottom: -150px;
    right: -100px;
    animation: floatOrb2 25s ease-in-out infinite;
}

.glow-orb-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 255, 136, 0.08) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: floatOrb3 30s ease-in-out infinite;
}

@keyframes floatOrb1 {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(50px, 30px); }
}

@keyframes floatOrb2 {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-40px, -20px); }
}

@keyframes floatOrb3 {
    0%, 100% { transform: translate(-50%, -50%) scale(1); }
    50% { transform: translate(-50%, -50%) scale(1.2); }
}

/* ========== 顶部导航 ========== */
.header {
    background: linear-gradient(180deg, rgba(3, 7, 18, 0.98) 0%, rgba(3, 7, 18, 0.95) 100%);
    backdrop-filter: blur(30px);
    border-bottom: 1px solid var(--border-glow);
    padding: 0 2.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow:
        0 4px 30px rgba(0, 212, 255, 0.15),
        0 1px 0 rgba(0, 212, 255, 0.1) inset;
}

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

.logo-icon {
    position: relative;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-icon i {
    font-size: 1.75rem;
    color: var(--primary);
    filter: drop-shadow(0 0 15px var(--primary));
    z-index: 2;
    animation: iconPulse 3s ease-in-out infinite;
}

@keyframes iconPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.logo-ring {
    position: absolute;
    inset: 0;
    border: 2px solid var(--primary);
    border-radius: 12px;
    opacity: 0.5;
    animation: ringRotate 10s linear infinite;
}

@keyframes ringRotate {
    0% { transform: rotate(0deg); border-radius: 12px; }
    25% { border-radius: 50%; }
    50% { transform: rotate(180deg); border-radius: 12px; }
    75% { border-radius: 50%; }
    100% { transform: rotate(360deg); border-radius: 12px; }
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-main {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--primary);
    text-shadow: 0 0 30px var(--primary-glow);
    letter-spacing: 3px;
}

.logo-sub {
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 4px;
    text-transform: uppercase;
}

/* 导航标签 */
.nav-tabs {
    display: flex;
    gap: 0.75rem;
}

.nav-tab {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 1rem 1.75rem;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.02);
    color: var(--text-secondary);
    font-family: 'Rajdhani', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: 12px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.nav-tab i {
    font-size: 1.3rem;
    transition: all 0.3s;
}

.nav-tab span {
    position: relative;
    z-index: 2;
}

.nav-tab-glow {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    opacity: 0;
    transition: opacity 0.3s;
}

.nav-tab:hover {
    color: var(--primary);
    border-color: var(--border-glow);
    transform: translateY(-2px);
}

.nav-tab:hover i {
    transform: scale(1.2);
    color: var(--primary);
}

.nav-tab.active {
    color: white;
    border-color: transparent;
    box-shadow:
        0 0 40px var(--primary-glow),
        0 10px 30px rgba(0, 212, 255, 0.3);
}

.nav-tab.active .nav-tab-glow {
    opacity: 1;
}

.nav-tab.active::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

/* 头部统计 */
.header-stats {
    display: flex;
    gap: 1.5rem;
}

.stat-mini {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.5rem 1rem;
    background: rgba(0, 212, 255, 0.05);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 10px;
}

.stat-num {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-shadow: 0 0 20px var(--primary-glow);
}

.stat-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ========== 主内容区 ========== */
.main-content {
    padding: 3rem;
    max-width: 1800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.shelf-section {
    display: none;
    animation: sectionFadeIn 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes sectionFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.shelf-section.active {
    display: block;
}

/* 区块标题 */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.section-badge {
    display: inline-block;
    padding: 0.4rem 1.5rem;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(124, 58, 237, 0.15));
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 20px;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--primary);
    letter-spacing: 3px;
    margin-bottom: 1rem;
    text-shadow: 0 0 10px var(--primary-glow);
}

.section-header h2 {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    font-family: 'Orbitron', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 50%, var(--primary-light) 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradientShift 5s ease infinite;
    margin-bottom: 1rem;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% center; }
    50% { background-position: 100% center; }
}

.section-header h2 i {
    font-size: 2.5rem;
    -webkit-text-fill-color: var(--primary);
    filter: drop-shadow(0 0 20px var(--primary));
    animation: iconFloat 3s ease-in-out infinite;
}

@keyframes iconFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 500;
    letter-spacing: 1px;
}

.section-line {
    width: 200px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), var(--accent), var(--primary), transparent);
    margin: 1.5rem auto 0;
    position: relative;
}

.section-line::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 20px var(--accent);
}

/* ========== 产品网格 ========== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1.75rem;
}

.product-card {
    position: relative;
    background: linear-gradient(180deg, rgba(15, 25, 45, 0.9) 0%, rgba(5, 10, 25, 0.95) 100%);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 2rem 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(0, 212, 255, 0.1);
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
    transform: scaleX(0);
    transition: transform 0.4s;
}

.product-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 0%, rgba(0, 212, 255, 0.15) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.4s;
}

.product-card:hover {
    transform: translateY(-15px) scale(1.03);
    border-color: var(--border-glow);
    box-shadow:
        0 30px 60px rgba(0, 0, 0, 0.5),
        0 0 50px var(--primary-glow),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.product-card:hover::before {
    transform: scaleX(1);
}

.product-card:hover::after {
    opacity: 1;
}

/* 产品图标 */
.product-icon {
    position: relative;
    width: 90px;
    height: 90px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2.5rem;
    box-shadow:
        0 15px 35px rgba(0, 212, 255, 0.35),
        inset 0 -3px 10px rgba(0, 0, 0, 0.2);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 2;
}

.product-icon::before {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 28px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s;
}

.product-card:hover .product-icon {
    transform: scale(1.15) rotate(8deg);
    box-shadow:
        0 20px 50px rgba(0, 212, 255, 0.5),
        inset 0 -3px 10px rgba(0, 0, 0, 0.2);
}

.product-card:hover .product-icon::before {
    opacity: 0.6;
    animation: iconRingPulse 2s ease-in-out infinite;
}

@keyframes iconRingPulse {
    0%, 100% { transform: scale(1); opacity: 0.6; }
    50% { transform: scale(1.15); opacity: 0.3; }
}

.product-card h4 {
    font-family: 'Rajdhani', sans-serif;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 2;
}

.product-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    position: relative;
    z-index: 2;
}

/* ========== 模态框 ========== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(15px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
    animation: modalFadeIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes modalFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: linear-gradient(180deg, rgba(10, 20, 40, 0.98) 0%, rgba(5, 10, 25, 0.99) 100%);
    border-radius: 24px;
    width: 90%;
    max-width: 950px;
    max-height: 88vh;
    overflow: hidden;
    border: 1px solid var(--border-glow);
    box-shadow:
        0 30px 100px rgba(0, 0, 0, 0.6),
        0 0 80px var(--primary-glow),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
    animation: modalSlideIn 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes modalSlideIn {
    from {
        transform: scale(0.85) translateY(40px);
        opacity: 0;
    }
    to {
        transform: scale(1) translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.75rem 2.5rem;
    border-bottom: 1px solid rgba(0, 212, 255, 0.2);
    background: linear-gradient(180deg, rgba(0, 212, 255, 0.08) 0%, transparent 100%);
}

.modal-header h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.6rem;
    font-weight: 700;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 30px var(--primary-glow);
}

.close-btn {
    width: 44px;
    height: 44px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--text-secondary);
    transition: all 0.3s;
}

.close-btn:hover {
    background: var(--danger);
    border-color: var(--danger);
    color: white;
    transform: rotate(90deg) scale(1.1);
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.5);
}

.modal-body {
    padding: 2rem 2.5rem;
    overflow-y: auto;
    max-height: calc(88vh - 90px);
}

/* 详情标签 */
.detail-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.detail-tab {
    padding: 0.875rem 1.75rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.02);
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 10px;
    font-family: 'Rajdhani', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.detail-tab:hover {
    border-color: var(--border-glow);
    color: var(--primary);
    transform: translateY(-2px);
}

.detail-tab.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-color: transparent;
    color: white;
    box-shadow: 0 0 30px var(--primary-glow);
}

.detail-content {
    display: none;
    animation: contentSlide 0.4s ease;
}

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

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

/* 资料列表 */
.doc-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.doc-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    background: rgba(0, 212, 255, 0.03);
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s;
}

.doc-item:hover {
    border-color: var(--border-glow);
    background: rgba(0, 212, 255, 0.08);
    transform: translateX(5px);
}

.doc-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.doc-icon {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.4rem;
    box-shadow: 0 8px 20px rgba(0, 212, 255, 0.3);
}

.doc-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1.05rem;
}

.doc-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.doc-actions {
    display: flex;
    gap: 0.75rem;
}

.btn {
    padding: 0.7rem 1.4rem;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-family: 'Rajdhani', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    box-shadow: 0 5px 20px rgba(0, 212, 255, 0.35);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.5);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(0, 212, 255, 0.1);
}

/* 上传区域 */
.upload-area {
    border: 2px dashed rgba(0, 212, 255, 0.35);
    border-radius: 18px;
    padding: 3rem;
    text-align: center;
    margin-top: 1.5rem;
    transition: all 0.3s;
    background: rgba(0, 212, 255, 0.02);
    position: relative;
    overflow: hidden;
}

.upload-area::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(45deg, transparent 40%, rgba(0, 212, 255, 0.05) 50%, transparent 60%);
    animation: uploadShimmer 3s infinite;
}

@keyframes uploadShimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.upload-area:hover {
    border-color: var(--primary);
    background: rgba(0, 212, 255, 0.08);
    box-shadow: 0 0 40px rgba(0, 212, 255, 0.15);
}

.upload-area i {
    font-size: 3.5rem;
    color: var(--primary);
    margin-bottom: 1rem;
    filter: drop-shadow(0 0 15px var(--primary-glow));
    position: relative;
    z-index: 1;
}

.upload-area p {
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    position: relative;
    z-index: 1;
}

.upload-input {
    display: none;
}

/* 供应商信息 */
.supplier-info {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(124, 58, 237, 0.1));
    border-radius: 18px;
    padding: 1.75rem;
    margin-top: 1.5rem;
    border: 1px solid rgba(0, 212, 255, 0.25);
    position: relative;
    overflow: hidden;
}

.supplier-info::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
}

.supplier-info h4 {
    margin-bottom: 1.25rem;
    color: var(--primary);
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.supplier-detail {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    margin-bottom: 0.875rem;
    color: var(--text-secondary);
    font-size: 1rem;
}

.supplier-detail i {
    color: var(--primary);
    width: 22px;
    font-size: 1.1rem;
}

/* 案例卡片 */
.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.case-card {
    background: var(--bg-card);
    border-radius: 18px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.4s;
}

.case-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.case-image {
    height: 180px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3.5rem;
    position: relative;
    overflow: hidden;
}

.case-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255,255,255,0.15) 50%, transparent 70%);
    animation: caseShimmer 4s infinite;
}

@keyframes caseShimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.case-content {
    padding: 1.5rem;
}

.case-content h5 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
    color: var(--text-primary);
}

.case-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========== 运维大屏 ========== */
.modal.fullscreen .dashboard-content {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #030712 0%, #0a1628 50%, #050d1a 100%);
    color: white;
    position: relative;
}

.modal.fullscreen .dashboard-content::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2.5rem;
    background: rgba(0, 0, 0, 0.5);
    border-bottom: 1px solid var(--border-glow);
    position: relative;
    z-index: 1;
}

.dashboard-header h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.close-btn.light {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
    color: white;
}

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

.dashboard-body {
    padding: 2rem 2.5rem;
    height: calc(100% - 90px);
    overflow-y: auto;
    position: relative;
    z-index: 1;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.stat-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(0, 212, 255, 0.25);
    border-radius: 18px;
    padding: 1.75rem;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
}

.stat-card h4 {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.stat-value {
    font-family: 'Orbitron', sans-serif;
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-change {
    font-size: 0.9rem;
    margin-top: 0.6rem;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.stat-change.up { color: var(--accent); }
.stat-change.down { color: var(--danger); }

.chart-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 18px;
    padding: 1.75rem;
}

.chart-card.wide { grid-column: span 2; }

.chart-card h4 {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.chart-card h4 i { color: var(--primary); }

.chart-placeholder {
    height: 220px;
    background: rgba(0, 212, 255, 0.02);
    border: 1px dashed rgba(0, 212, 255, 0.25);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.chart-placeholder i {
    color: var(--primary);
    opacity: 0.5;
}

/* 设备列表 */
.device-list {
    display: flex;
    flex-direction: column;
    gap: 0.875rem;
    max-height: 380px;
    overflow-y: auto;
}

.device-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.125rem 1.25rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 14px;
    transition: all 0.3s;
}

.device-item:hover {
    border-color: var(--border-glow);
    background: rgba(0, 212, 255, 0.06);
    transform: translateX(5px);
}

.device-info {
    display: flex;
    align-items: center;
    gap: 1.125rem;
}

.device-status {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    position: relative;
}

.device-status::after {
    content: '';
    position: absolute;
    inset: -5px;
    border-radius: 50%;
    opacity: 0.3;
}

.device-status.online {
    background: var(--accent);
    box-shadow: 0 0 20px var(--accent);
}

.device-status.online::after {
    background: var(--accent);
    animation: statusPulse 2s infinite;
}

@keyframes statusPulse {
    0%, 100% { transform: scale(1); opacity: 0.3; }
    50% { transform: scale(1.8); opacity: 0; }
}

.device-status.offline {
    background: var(--danger);
    box-shadow: 0 0 12px rgba(239, 68, 68, 0.6);
}

.device-status.warning {
    background: var(--warning);
    box-shadow: 0 0 12px rgba(251, 191, 36, 0.6);
    animation: warningBlink 1s infinite;
}

@keyframes warningBlink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.device-name {
    font-size: 1rem;
    font-weight: 600;
}

.device-location {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.3rem;
}

.device-metrics {
    display: flex;
    gap: 1.75rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.device-metrics span {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

/* ========== 响应式 ========== */
@media (max-width: 1200px) {
    .dashboard-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .header-stats {
        display: none;
    }
}

@media (max-width: 768px) {
    .header {
        flex-direction: column;
        height: auto;
        padding: 1rem 1.5rem;
        gap: 1rem;
    }

    .logo {
        margin-right: 0;
    }

    .nav-tabs {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }

    .nav-tab {
        padding: 0.75rem 1.25rem;
        font-size: 0.9rem;
    }

    .main-content {
        padding: 1.5rem;
    }

    .section-header h2 {
        font-size: 1.75rem;
    }

    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 1.25rem;
    }

    .product-card {
        padding: 1.5rem 1rem;
    }

    .product-icon {
        width: 70px;
        height: 70px;
        font-size: 2rem;
    }

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

    .chart-card.wide {
        grid-column: span 1;
    }

    .glow-orb {
        display: none;
    }
}

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

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

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary), var(--secondary));
    border-radius: 4px;
}

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

/* 选中文本样式 */
::selection {
    background: var(--primary);
    color: white;
}