/* components.css - 组件样式 */

@import url('variables.css');

/* ================= 顶部导航 ================= */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    transition: background-color var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
    border-bottom-color: var(--border-color);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

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

.logo-icon {
    width: 80px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 1.25rem;
    font-weight: 700;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1.2;
}

.logo-text small {
    display: block;
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
}

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

.nav-link {
    position: relative;
    padding: 8px 16px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-color);
    transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-link::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: width var(--transition-base), left var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 60%;
    left: 20%;
}

.header-phone {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background-color: rgba(15, 76, 129, 0.08);
    border-radius: 50px;
    color: var(--primary-color);
    font-weight: 600;
    font-family: var(--font-number);
    transition: background-color var(--transition-fast);
}

.header-phone:hover {
    background-color: rgba(15, 76, 129, 0.15);
}

.header-phone i {
    color: var(--accent-color);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 36px;
    height: 36px;
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* ================= 按钮 ================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(15, 76, 129, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(15, 76, 129, 0.45);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

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

.btn-white:hover {
    background-color: var(--accent-color);
    color: #ffffff;
}

.btn-sm {
    padding: 8px 18px;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1rem;
}

/* ================= 卡片 ================= */
.card {
    background-color: #ffffff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    border: 1px solid var(--border-light);
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.card-img {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.card-img .img-placeholder {
    border-radius: 0;
    border: none;
}

.card-body {
    padding: 24px;
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 10px;
}

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

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 16px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-color);
    transition: gap var(--transition-fast);
}

.card-link:hover {
    gap: 10px;
    color: var(--accent-color);
}

/* ================= 主营业务卡片 ================= */
.business-grid {
    display: grid;
    gap: 24px;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.business-card {
    background-color: #ffffff;
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all var(--transition-base);
}

.business-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.business-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-light) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 1.75rem;
    margin-bottom: 20px;
}

.business-card-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-color);
}

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

.service-list {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 2;
    padding-left: 0;
    list-style: none;
}

.service-list li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.service-list li i {
    color: var(--accent-color);
    margin-top: 8px;
    font-size: 0.75rem;
}

/* ================= 服务卡片 ================= */
.service-card {
    background-color: #ffffff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.service-card-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 22px 24px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-light) 100%);
    color: #ffffff;
}

.service-card-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1.4;
}

.service-card-icon {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.service-card-body {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.service-card-body p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.service-card-body ul {
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 0.9375rem;
    color: var(--text-color);
    line-height: 2;
}

.service-card-body ul li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.service-card-body ul li i {
    color: var(--accent-color);
    margin-top: 8px;
    font-size: 0.75rem;
}

/* ================= 产品卡片 ================= */
.product-card {
    background-color: #ffffff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all var(--transition-base);
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-light);
}

.product-card-img {
    height: 240px;
}

.product-card-img img {
    height: auto;
    aspect-ratio: 8 / 5; 
    object-fit: cover; 
    display: block;
}

.product-card-body {
    padding: 24px;
}

.product-card-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-color);
    background-color: rgba(0, 168, 232, 0.1);
    padding: 4px 10px;
    border-radius: 50px;
    margin-bottom: 10px;
}

.product-card-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-color);
}

.product-card-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

/* ================= 新闻卡片 ================= */
.news-card {
    display: flex;
    flex-direction: column;
    background-color: #ffffff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all var(--transition-base);
}

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

.news-card-img {
    height: 200px;
}


.news-card-body {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-card-date {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8125rem;
    color: var(--text-light);
    margin-bottom: 10px;
}

.news-card-title {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--text-color);
    line-height: 1.5;
    margin-bottom: 10px;
    flex: 1;
}

.news-card-title:hover {
    color: var(--primary-color);
}

.news-card-summary {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ================= 应用卡片 ================= */
.app-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    height: 320px;
    box-shadow: var(--shadow-md);
}

.app-card-bg {
    width: 100%;
    height: 100%;
}

.app-card-bg .img-placeholder::before {
    content: "应用场景图片占位";
}

.app-card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 24px;
    background: linear-gradient(to top, rgba(15, 24, 41, 0.95) 0%, rgba(15, 24, 41, 0.6) 60%, transparent 100%);
    color: #ffffff;
    transition: padding var(--transition-base);
}

.app-card:hover .app-card-overlay {
    padding-bottom: 32px;
}

.app-card-icon {
    width: 48px;
    height: 48px;
    background-color: var(--accent-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 14px;
    font-size: 1.25rem;
}

.app-card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.app-card-desc {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.6;
}

/* ================= 数据卡片 ================= */
.stat-card {
    text-align: center;
    padding: 32px 20px;
    background-color: #ffffff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

.stat-number {
    font-family: var(--font-number);
    font-size: 2.75rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: 8px;
}

.stat-number span {
    color: var(--accent-color);
}

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

/* ================= 页脚 ================= */
.footer {
    background-color: var(--bg-dark);
    color: #ffffff;
    padding-top: 80px;
    padding-bottom: 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-brand .logo-text {
    color: #ffffff;
    margin-bottom: 16px;
}

.footer-brand .logo-text small {
    color: rgba(255, 255, 255, 0.6);
}

.footer-desc {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    margin-bottom: 20px;
}

.footer-title {
    font-size: 1.0625rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: #ffffff;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer-links a:hover {
    color: var(--accent-color);
    padding-left: 6px;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 14px;
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

.footer-contact i {
    color: var(--accent-color);
    margin-top: 4px;
    flex-shrink: 0;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ================= 表单 ================= */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-color);
    margin-bottom: 8px;
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: #ffffff;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0, 168, 232, 0.15);
}

.form-textarea {
    min-height: 140px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

/* ================= 时间线 ================= */
.timeline {
    position: relative;
    padding-left: 30px;
}

.timeline::before {
    content: "";
    position: absolute;
    left: 6px;
    top: 0;
    width: 2px;
    height: 100%;
    background-color: var(--border-color);
}

.timeline-item {
    position: relative;
    padding-bottom: 36px;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -30px;
    top: 4px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background-color: var(--accent-color);
    border: 3px solid #ffffff;
    box-shadow: 0 0 0 2px var(--accent-color);
}

.timeline-year {
    font-family: var(--font-number);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 6px;
}

.timeline-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 6px;
}

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

/* ================= 标签 ================= */
.tag {
    display: inline-block;
    padding: 4px 12px;
    font-size: 1;
    font-weight: 600;
    border-radius: 50px;
    background-color: var(--bg-light);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.tag:hover,
.tag.active {
    background-color: var(--primary-color);
    color: #ffffff;
}

/* ================= 返回顶部按钮 ================= */
.back-to-top {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: #ffffff;
    font-size: 1.125rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}