/* ========================================
   北京桓语丫丫毛绒玩具有限公司 - 网站样式
   ======================================== */

/* CSS变量定义 */
:root {
    --primary-color: #ff6b9d;
    --primary-dark: #e5507f;
    --secondary-color: #4ecdc4;
    --accent-color: #ffe66d;
    --text-dark: #2c3e50;
    --text-light: #636e72;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 15px 40px rgba(0, 0, 0, 0.15);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

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

.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    color: var(--text-dark);
    margin-bottom: 15px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    margin: 15px auto 0;
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 50px;
}

/* ========================================
   导航栏样式
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.15);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
}

.logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

.logo a:hover {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 35px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 1rem;
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 28px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 3px;
    transition: var(--transition);
}

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

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

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

/* ========================================
   首页横幅区域
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 100px 50px 50px;
    max-width: 1400px;
    margin: 0 auto;
    gap: 60px;
    background: linear-gradient(135deg, #fff5f8 0%, #f0f9ff 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(255, 107, 157, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    flex: 1;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 25px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--text-light);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 107, 157, 0.4);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px);
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 1;
}

.floating-toys {
    position: relative;
    width: 400px;
    height: 400px;
}

.toy {
    position: absolute;
    font-size: 4rem;
    animation: float 3s ease-in-out infinite;
}

.toy-1 { top: 10%; left: 20%; animation-delay: 0s; }
.toy-2 { top: 30%; right: 15%; animation-delay: 0.5s; }
.toy-3 { bottom: 25%; left: 10%; animation-delay: 1s; }
.toy-4 { bottom: 10%; right: 25%; animation-delay: 1.5s; }

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

.animate-float {
    animation: gentleFloat 4s ease-in-out infinite;
}

@keyframes gentleFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

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

.animate-fade-in-delay {
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
}

.animate-fade-in-delay-2 {
    animation: fadeInUp 0.8s ease 0.4s forwards;
    opacity: 0;
}

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

/* ========================================
   关于我们部分
   ======================================== */
.about {
    background: var(--bg-white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h3 {
    font-size: 2rem;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.8;
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.stat-item {
    text-align: center;
    padding: 25px;
    background: linear-gradient(135deg, #fff5f8, #f0f9ff);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.stat-label {
    color: var(--text-light);
    font-size: 0.95rem;
}

.about-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-placeholder {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, #fce4ec, #e1f5fe);
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    box-shadow: var(--shadow);
}

.placeholder-icon {
    font-size: 5rem;
    margin-bottom: 15px;
}

.image-placeholder p {
    color: var(--text-light);
    font-size: 1.1rem;
}

.image-placeholder.small {
    width: 100%;
    height: 250px;
    font-size: 3rem;
}

.image-placeholder.medium {
    width: 100%;
    height: 200px;
    font-size: 3.5rem;
}

.avatar-placeholder {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: linear-gradient(135deg, #fce4ec, #e1f5fe);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    margin: 0 auto 20px;
}

/* ========================================
   服务项目部分
   ======================================== */
.services {
    background: var(--bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.service-card {
    background: white;
    padding: 40px 30px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.service-icon {
    font-size: 3.5rem;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.4rem;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.service-card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* ========================================
   产品展示部分
   ======================================== */
.products {
    background: var(--bg-white);
}

.product-filter {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 25px;
    border: 2px solid var(--primary-color);
    background: transparent;
    color: var(--primary-color);
    border-radius: 50px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: white;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.product-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
}

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

.product-card.hidden {
    display: none;
}

.product-image {
    overflow: hidden;
}

.product-info {
    padding: 20px;
}

.product-info h4 {
    font-size: 1.2rem;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.product-info p {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 12px;
}

.product-tag {
    display: inline-block;
    padding: 5px 15px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 20px;
    font-size: 0.85rem;
}

/* ========================================
   案例展示部分
   ======================================== */
.cases {
    background: var(--bg-light);
}

.cases-slider {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.case-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.case-card:hover {
    transform: scale(1.03);
    box-shadow: var(--shadow-hover);
}

.case-info {
    padding: 25px;
}

.case-info h4 {
    font-size: 1.2rem;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.case-info p {
    color: var(--text-light);
    margin-bottom: 12px;
}

.case-type {
    display: inline-block;
    padding: 5px 15px;
    background: var(--accent-color);
    color: var(--text-dark);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* ========================================
   设计团队部分
   ======================================== */
.team {
    background: var(--bg-white);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 35px;
}

.team-member {
    text-align: center;
    padding: 30px 20px;
    border-radius: var(--border-radius);
    background: var(--bg-light);
    transition: var(--transition);
}

.team-member:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow);
    background: white;
}

.member-avatar {
    margin-bottom: 15px;
}

.team-member h4 {
    font-size: 1.3rem;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.member-title {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 10px;
    font-size: 0.95rem;
}

.member-desc {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* ========================================
   联系我们部分
   ======================================== */
.contact {
    background: linear-gradient(135deg, #fff5f8 0%, #f0f9ff 100%);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 50px;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.info-item {
    display: flex;
    gap: 20px;
    align-items: start;
    padding: 20px;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.info-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow);
}

.info-icon {
    font-size: 2rem;
    min-width: 50px;
}

.info-item h4 {
    font-size: 1.1rem;
    color: var(--text-dark);
    margin-bottom: 5px;
}

.info-item p {
    color: var(--text-light);
    font-size: 0.95rem;
}

.contact-form-wrapper {
    background: white;
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 500;
    color: var(--text-dark);
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 107, 157, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.btn-submit {
    width: 100%;
    padding: 16px;
    font-size: 1.05rem;
}

/* ========================================
   页脚部分
   ======================================== */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 60px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-about h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.footer-about p {
    color: #b0b0b0;
    line-height: 1.8;
}

.footer-links h4,
.footer-services h4,
.footer-contact h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.footer-links ul,
.footer-services ul {
    list-style: none;
}

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

.footer-links a,
.footer-services a {
    color: #b0b0b0;
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover,
.footer-services a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-contact p {
    color: #b0b0b0;
    margin-bottom: 10px;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: #888;
    font-size: 0.9rem;
}

/* ========================================
   回到顶部按钮
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    z-index: 999;
}

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

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-5px);
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1024px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 120px 30px 60px;
    }

    .hero-title {
        font-size: 2.8rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .floating-toys {
        width: 300px;
        height: 300px;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        align-items: center;
        padding: 30px 0;
        gap: 20px;
        box-shadow: var(--shadow);
        transform: translateY(-150%);
        transition: var(--transition);
    }

    .nav-links.active {
        transform: translateY(0);
    }

    .hamburger {
        display: flex;
    }

    .section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 2rem;
    }

    .hero-title {
        font-size: 2.2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .stats {
        grid-template-columns: 1fr;
        gap: 15px;
    }

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

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

    .team-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .contact-form-wrapper {
        padding: 25px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 100px 20px 40px;
    }

    .hero-title {
        font-size: 1.8rem;
    }

    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }

    .floating-toys {
        width: 250px;
        height: 250px;
    }

    .toy {
        font-size: 3rem;
    }

    .product-filter {
        gap: 10px;
    }

    .filter-btn {
        padding: 8px 18px;
        font-size: 0.85rem;
    }
}

/* ========================================
   动画效果增强
   ======================================== */
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.service-card:hover .service-icon {
    animation: pulse 0.6s ease;
}

/* 滚动显示动画 */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}