/*
Theme Name: FlashRabbit
Theme URI: https://www.flashrabbit.cn
Author: FlashRabbit Team
Author URI: https://www.flashrabbit.cn
Description: 闪电兔企业官网主题 - 供应链中后台服务托盘商。基于现代企业设计风格,提供完整的公司介绍、服务展示、合作流程和联系功能。
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: flashrabbit
Tags: business, corporate, custom-menu, featured-images, translation-ready, accessibility-ready
*/

/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #007bff;
    --secondary-color: #6610f2;
    --text-dark: #212529;
    --text-light: #6c757d;
    --bg-light: #f8f9fa;
    --bg-gray: #e9ecef;
    --bg-dark: #343a40;
    --white: #ffffff;
    --border-radius: 5px;
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB',
                 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部导航 */
.header {
    background-color: var(--white);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 15px 0;
}

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

.logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

.logo span {
    color: var(--secondary-color);
}

/* 主导航 */
.main-nav {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
    align-items: center;
    margin: 0;
    padding: 0;
}

.main-nav li {
    margin: 0;
    padding: 0;
}

.main-nav a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.main-nav a:hover {
    color: var(--primary-color);
}

/* 菜单切换按钮 */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 25px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.menu-toggle span {
    width: 100%;
    height: 3px;
    background: var(--text-dark);
    border-radius: 3px;
    transition: all 0.3s ease;
}

.menu-toggle:hover span {
    background: var(--primary-color);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(-20px);
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
}

/* Hero 区域 */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 120px 20px 80px;
    text-align: center;
    margin-top: 70px;
    position: relative;
    overflow: hidden;
}

/* 轮播容器 */
.hero-slider {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 500px;
    overflow: hidden;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-slide.active {
    opacity: 1;
    z-index: 1;
}

.hero-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 123, 255, 0.85) 0%, rgba(102, 16, 242, 0.85) 100%);
    z-index: 1;
}

.hero-slide .container {
    position: relative;
    z-index: 2;
    padding: 0 20px;
}

.hero-section h2 {
    font-size: 48px;
    margin-bottom: 20px;
    animation: fadeInUp 0.8s ease;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-section h3 {
    font-size: 32px;
    margin-bottom: 30px;
    font-weight: normal;
    animation: fadeInUp 0.8s ease 0.2s both;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

/* 单张图片时显示 */
.hero-single {
    min-height: 500px;
}

/* 轮播控制 */
.slider-controls {
    position: absolute;
    bottom: 40px;
    left: 0;
    right: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    z-index: 10;
}

.slider-prev,
.slider-next {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 50%;
    font-size: 24px;
    color: var(--primary-color);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.slider-prev:hover,
.slider-next:hover {
    background: var(--white);
    transform: scale(1.1);
    color: var(--secondary-color);
}

.slider-dots {
    display: flex;
    gap: 10px;
}

.slider-dot {
    width: 12px;
    height: 12px;
    background: rgba(255, 255, 255, 0.5);
    border: 2px solid var(--white);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
}

.slider-dot:hover {
    background: var(--white);
    transform: scale(1.2);
}

.slider-dot.active {
    background: var(--white);
    transform: scale(1.2);
}

/* 通用区块样式 */
.section {
    padding: 80px 20px;
}

.section-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.section-subtitle {
    text-align: center;
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 50px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* 核心服务区块 */
.service-section {
    background-color: var(--white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.service-card {
    background: var(--white);
    border-radius: 10px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.service-card h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 24px;
}

/* 关于我们区块 */
.about-section {
    background-color: var(--bg-light);
}

.about-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    margin-top: 40px;
}

.about-item {
    background: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.05);
}

.about-item h4 {
    color: var(--primary-color);
    margin-bottom: 10px;
    font-size: 20px;
}

.about-item p {
    color: var(--text-light);
    line-height: 1.8;
}

.company-purpose {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.purpose-item {
    background: var(--white);
    padding: 25px;
    border-radius: 8px;
    text-align: center;
}

.purpose-item h4 {
    color: var(--secondary-color);
    margin-bottom: 10px;
}

/* 市场价值区块 */
.market-value-section {
    background-color: var(--white);
}

.value-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.value-card {
    background: var(--bg-gray);
    padding: 40px;
    border-radius: 10px;
    text-align: center;
    transition: var(--transition);
}

.value-card:hover {
    background: var(--primary-color);
    color: var(--white);
}

.value-card:hover h3,
.value-card:hover p {
    color: var(--white);
}

.value-card h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 24px;
}

/* 核心能力区块 */
.core-capabilities-section {
    background-color: var(--bg-light);
}

.capabilities-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.capability-item {
    background: var(--white);
    padding: 30px;
    border-radius: 10px;
    border-left: 4px solid var(--primary-color);
}

.capability-item h3 {
    color: var(--text-dark);
    margin-bottom: 10px;
    font-size: 22px;
}

.capability-item h4 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 18px;
    font-weight: 600;
}

.capability-item ul {
    list-style: none;
    padding-left: 0;
}

.capability-item li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
}

.capability-item li:before {
    content: "✓";
    color: var(--primary-color);
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* 合作流程区块 */
.cooperation-process-section {
    background-color: var(--white);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.process-step {
    text-align: center;
    padding: 30px 20px;
    border-radius: 10px;
    transition: var(--transition);
}

.process-step:hover {
    background: var(--bg-gray);
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    margin: 0 auto 20px;
}

.process-step h3 {
    margin-bottom: 15px;
    color: var(--text-dark);
}

/* 联系我们区块 */
.contact-section {
    background-color: var(--bg-light);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 50px;
    margin-top: 50px;
}

.contact-info {
    background: var(--white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

.contact-detail {
    margin-bottom: 25px;
    padding-bottom: 25px;
    border-bottom: 1px solid var(--bg-gray);
}

.contact-detail:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.contact-detail h4 {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 5px;
}

.contact-detail p {
    color: var(--text-dark);
    font-size: 18px;
    font-weight: 500;
}

/* 表单样式 */
.contact-form {
    background: var(--white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

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

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-size: 16px;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0,123,255,0.1);
}

/* 按钮样式 */
.button, .submit-btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--white);
    padding: 12px 30px;
    border: none;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.button:hover, .submit-btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    color: var(--white);
}

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

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

/* 页脚 */
.footer {
    background-color: var(--bg-dark);
    color: var(--white);
    padding: 40px 20px;
    text-align: center;
}

.footer p {
    margin-bottom: 10px;
    color: #adb5bd;
}

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

/* 页面内容样式 */
.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 80px 20px;
    text-align: center;
}

.page-title {
    font-size: 36px;
    margin: 0 0 10px 0;
}

.page-subtitle {
    font-size: 18px;
    margin: 0;
    opacity: 0.9;
}

.page-content-wrapper,
.service-detail-wrapper {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    margin: 60px auto;
}

.page-content,
.service-content {
    background: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.05);
}

.page-featured-image,
.service-featured-image {
    margin-bottom: 30px;
    border-radius: 10px;
    overflow: hidden;
}

.page-featured-image img,
.service-featured-image img {
    width: 100%;
    height: auto;
    display: block;
}

.page-description,
.service-description {
    line-height: 1.8;
    color: var(--text-dark);
    font-size: 16px;
}

/* 服务详情页样式 */
.service-features-section {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid var(--bg-gray);
}

.service-features-section h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.service-features {
    list-style: none;
    padding: 0;
}

.service-features li {
    padding: 10px 0 10px 30px;
    position: relative;
}

.service-features li:before {
    content: "✓";
    color: var(--primary-color);
    position: absolute;
    left: 0;
    font-weight: bold;
    font-size: 18px;
}

.service-icon {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.service-description {
    margin-bottom: 20px;
    color: var(--text-light);
}

.service-features {
    list-style: none;
    padding: 0;
    margin-top: 15px;
}

.service-features li {
    padding: 5px 0 5px 20px;
    position: relative;
    color: var(--text-light);
}

.service-features li:before {
    content: "•";
    color: var(--primary-color);
    position: absolute;
    left: 0;
    font-weight: bold;
}

.service-link {
    display: inline-block;
    margin-top: 15px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.service-link:hover {
    text-decoration: underline;
}

/* 侧边栏样式 */
.page-sidebar,
.service-sidebar {
    margin-top: 60px;
}

.sidebar-widget {
    background: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.05);
    margin-bottom: 30px;
}

.sidebar-widget h3 {
    color: var(--text-dark);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-color);
}

.sidebar-widget ul {
    list-style: none;
    padding: 0;
}

.sidebar-widget li {
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--bg-gray);
}

.sidebar-widget li:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.sidebar-widget a {
    color: var(--text-dark);
    text-decoration: none;
    transition: var(--transition);
}

.sidebar-widget a:hover {
    color: var(--primary-color);
}

.contact-widget p {
    margin-bottom: 20px;
    color: var(--text-light);
}

/* 市场价值区块样式 */
.value-image {
    margin-bottom: 20px;
    border-radius: 8px;
    overflow: hidden;
}

.value-image img {
    width: 100%;
    height: auto;
    display: block;
}

.value-description {
    color: var(--text-light);
    line-height: 1.6;
}

/* 核心能力区块样式 */
.capability-thumbnail {
    margin-bottom: 20px;
    border-radius: 8px;
    overflow: hidden;
}

.capability-thumbnail img {
    width: 100%;
    height: auto;
    display: block;
}

.capability-content {
    margin-bottom: 20px;
    color: var(--text-light);
    line-height: 1.6;
}

.capability-link {
    display: inline-block;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.capability-link:hover {
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-section h2 {
        font-size: 32px;
    }

    .hero-section h3 {
        font-size: 24px;
    }

    .hero-slider,
    .hero-single {
        min-height: 400px;
    }

    .slider-prev,
    .slider-next {
        width: 40px;
        height: 40px;
        font-size: 20px;
    }

    .slider-dot {
        width: 10px;
        height: 10px;
    }

    .about-content,
    .value-grid,
    .capabilities-list,
    .contact-wrapper,
    .page-content-wrapper,
    .service-detail-wrapper {
        grid-template-columns: 1fr;
    }

    .company-purpose {
        grid-template-columns: 1fr;
    }

    .process-steps {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .menu-toggle {
        display: flex;
    }

    .main-nav {
        display: none;
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        align-items: flex-start;
        padding: 80px 20px 20px;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
        z-index: 1000;
    }

    .main-nav.active {
        display: flex;
        right: 0;
    }

    .main-nav ul {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
        gap: 0;
    }

    .main-nav li {
        width: 100%;
        border-bottom: 1px solid var(--bg-gray);
    }

    .main-nav a {
        display: block;
        padding: 15px 0;
        width: 100%;
        font-size: 18px;
    }

    .main-nav a.active::after {
        display: none;
    }

    .header-inner {
        flex-direction: column;
        gap: 15px;
    }

    .page-header {
        padding: 40px 20px;
    }

    .page-title {
        font-size: 28px;
    }
}

@media (max-width: 992px) {
    .about-content,
    .capabilities-list,
    .page-content-wrapper,
    .service-detail-wrapper {
        grid-template-columns: 1fr;
    }

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

    .page-sidebar,
    .service-sidebar {
        margin-top: 30px;
    }
}

/* 无内容提示 */
.no-content {
    text-align: center;
    color: var(--text-light);
    padding: 40px 20px;
    background: var(--white);
    border-radius: 10px;
}

/* ===== 滚动动画效果 ===== */

/* 滚动触发的动画基础样式 */
.section,
.service-card,
.value-card,
.capability-item,
.process-step,
.about-item,
.purpose-item {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

/* 元素进入视口时的动画状态 */
.section.animate-in,
.service-card.animate-in,
.value-card.animate-in,
.capability-item.animate-in,
.process-step.animate-in,
.about-item.animate-in,
.purpose-item.animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* 阶段性延迟动画 - 为网格中的元素添加延迟 */
.services-grid .service-card:nth-child(1) { transition-delay: 0.1s; }
.services-grid .service-card:nth-child(2) { transition-delay: 0.2s; }
.services-grid .service-card:nth-child(3) { transition-delay: 0.3s; }

.value-grid .value-card:nth-child(1) { transition-delay: 0.1s; }
.value-grid .value-card:nth-child(2) { transition-delay: 0.2s; }
.value-grid .value-card:nth-child(3) { transition-delay: 0.3s; }

.capabilities-list .capability-item:nth-child(1) { transition-delay: 0.1s; }
.capabilities-list .capability-item:nth-child(2) { transition-delay: 0.2s; }
.capabilities-list .capability-item:nth-child(3) { transition-delay: 0.3s; }
.capabilities-list .capability-item:nth-child(4) { transition-delay: 0.4s; }

.process-steps .process-step:nth-child(1) { transition-delay: 0.1s; }
.process-steps .process-step:nth-child(2) { transition-delay: 0.2s; }
.process-steps .process-step:nth-child(3) { transition-delay: 0.3s; }
.process-steps .process-step:nth-child(4) { transition-delay: 0.4s; }

.about-content .about-item:nth-child(1) { transition-delay: 0.1s; }
.about-content .about-item:nth-child(2) { transition-delay: 0.2s; }

.company-purpose .purpose-item:nth-child(1) { transition-delay: 0.1s; }
.company-purpose .purpose-item:nth-child(2) { transition-delay: 0.2s; }
.company-purpose .purpose-item:nth-child(3) { transition-delay: 0.3s; }

/* 淡入动画类 - 用于特殊场景 */
.fade-in {
    animation: fadeIn 0.8s ease forwards;
}

.fade-in-up {
    animation: fadeInUp 0.8s ease forwards;
}

.fade-in-left {
    animation: fadeInLeft 0.8s ease forwards;
}

.fade-in-right {
    animation: fadeInRight 0.8s ease forwards;
}

.scale-in {
    animation: scaleIn 0.6s ease forwards;
}

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* 悬停增强效果 */
.service-card:hover {
    animation: cardPulse 0.4s ease;
}

@keyframes cardPulse {
    0% {
        transform: translateY(-5px);
    }
    50% {
        transform: translateY(-8px);
    }
    100% {
        transform: translateY(-5px);
    }
}

/* 导航栏滚动效果 */
.header.scrolled {
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.15);
    padding: 10px 0;
    transition: background-color 0.3s ease, box-shadow 0.3s ease, padding 0.3s ease;
}

/* 移动端菜单动画 */
.main-nav {
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.menu-toggle {
    transition: transform 0.3s ease;
}

.menu-toggle.active {
    transform: rotate(180deg);
}

/* 按钮点击效果 */
.button:active,
.submit-btn:active {
    transform: scale(0.95);
}

/* 表单输入框聚焦动画 */
.form-group input,
.form-group textarea {
    transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    transform: translateY(-2px);
}

/* 滚动到顶部按钮 */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.4);
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    background: var(--secondary-color);
    transform: translateY(-5px);
}

.scroll-to-top:active {
    transform: translateY(-2px);
}

/* 页面加载动画 */
.page-loading {
    animation: pageLoad 0.6s ease forwards;
}

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

/* 按钮涟漪效果 */
.button, .submit-btn {
    position: relative;
    overflow: hidden;
}

.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.6);
    transform: scale(0);
    animation: rippleEffect 0.6s linear;
    pointer-events: none;
}

@keyframes rippleEffect {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* 导航栏当前激活状态 */
.main-nav a.active {
    color: var(--primary-color) !important;
    font-weight: 600;
    position: relative;
}

.main-nav a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

/* 表单输入框聚焦状态 */
.form-group.focused input,
.form-group.focused textarea {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.15);
}