/* 全局样式和变量 */
:root {
    --primary-color: #FF6B81;
    --secondary-color: #FFF0F5;
    --accent-color: #FFC0CB;
    --text-dark: #333333;
    --text-light: #666666;
    --white: #FFFFFF;
    --shadow: 0 4px 20px rgba(255, 107, 129, 0.15);
    --shadow-hover: 0 8px 30px rgba(255, 107, 129, 0.25);
    --border-radius: 15px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
}

/* 导航栏样式 */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(255, 107, 129, 0.1);
    transition: var(--transition);
    padding: 1rem 0;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 30px rgba(255, 107, 129, 0.2);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color) !important;
    text-decoration: none;
}

/* SheTap Logo Styles */
.shetap-logo {
    display: inline-block;
    transition: all 0.3s ease;
    filter: drop-shadow(0 2px 4px rgba(255, 107, 129, 0.1));
}

.shetap-logo:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 4px 8px rgba(255, 107, 129, 0.2));
}

.navbar-brand .shetap-logo {
    filter: drop-shadow(0 2px 4px rgba(255, 107, 129, 0.15));
}

.hero-logo .shetap-logo {
    filter: drop-shadow(0 8px 16px rgba(255, 107, 129, 0.2));
}

.footer-brand .shetap-logo {
    filter: drop-shadow(0 2px 4px rgba(255, 255, 255, 0.3));
}

/* Logo Animations */
.animate-fade-in {
    animation: logoFadeIn 1.2s ease-out;
}

.hero-logo-main {
    animation: logoFloat 3s ease-in-out infinite;
}

@keyframes logoFadeIn {
    0% {
        opacity: 0;
        transform: translateY(30px) scale(0.9);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes logoFloat {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* Enhanced hero section styling */
.hero-section {
    background: linear-gradient(135deg, #FFF0F5 0%, #FFFFFF 50%, #FFF8FA 100%);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 20%, rgba(255, 107, 129, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 70% 80%, rgba(255, 192, 203, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
}

/* Responsive logo sizing */
@media (max-width: 768px) {
    .hero-logo .shetap-logo {
        max-width: 200px;
    }
    
    .navbar-brand .shetap-logo {
        max-width: 32px;
    }
    
    .hero-logo-main {
        animation: none; /* Disable animation on mobile for performance */
    }
}

@media (max-width: 576px) {
    .hero-logo .shetap-logo {
        max-width: 150px;
    }
}

/* Print styles for logos */
@media print {
    .shetap-logo {
        filter: none !important;
        animation: none !important;
        transform: none !important;
    }
    
    .hero-logo-main {
        animation: none !important;
    }
    
    .navbar-brand .shetap-logo {
        max-width: 100px !important;
    }
    
    .hero-logo .shetap-logo {
        max-width: 200px !important;
    }
}

.brand-text {
    background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-link {
    color: var(--text-dark) !important;
    font-weight: 500;
    margin: 0 0.5rem;
    position: relative;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--primary-color) !important;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 100%;
}

/* 首页 Banner 样式 */
.hero-section {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--white) 100%);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="hearts" x="0" y="0" width="20" height="20" patternUnits="userSpaceOnUse"><text x="10" y="15" text-anchor="middle" font-size="12" fill="%23FF6B81" opacity="0.1">♥</text></pattern></defs><rect width="100" height="100" fill="url(%23hearts)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 2rem 0;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.highlight {
    background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-features {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    color: var(--text-dark);
}

.feature-item i {
    font-size: 1.2rem;
}

/* 手机模拟器样式 */
.hero-image {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem 0;
}

.phone-mockup {
    width: 300px;
    height: 600px;
    background: linear-gradient(145deg, #f0f0f0, #e0e0e0);
    border-radius: 30px;
    padding: 20px;
    box-shadow: var(--shadow);
    position: relative;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    position: relative;
}

.app-interface {
    padding: 20px;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.app-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 30px;
    font-weight: 600;
    color: var(--primary-color);
}

.nfc-demo {
    text-align: center;
    margin: 40px 0;
    padding: 30px;
    background: var(--secondary-color);
    border-radius: var(--border-radius);
}

.nfc-demo i {
    font-size: 3rem;
    margin-bottom: 15px;
}

.community-demo {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-top: auto;
    padding: 20px;
    background: var(--secondary-color);
    border-radius: var(--border-radius);
}

.user-avatar {
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.message p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-dark);
}

/* 按钮样式 */
.btn-primary {
    background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
    border: none;
    border-radius: 50px;
    padding: 12px 30px;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
    background: linear-gradient(45deg, #e55a6b, #ffa8b8);
}

/* 功能展示区样式 */
.features-section {
    background: var(--white);
    padding: 5rem 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 3rem;
}

.feature-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 2.5rem 2rem;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 107, 129, 0.1), transparent);
    transition: var(--transition);
}

.feature-card:hover::before {
    left: 100%;
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    transition: var(--transition);
}

.feature-icon i {
    font-size: 2rem;
    color: var(--white);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.6;
    flex-grow: 1;
}

.feature-hover {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 30px;
    height: 30px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    opacity: 0;
    transition: var(--transition);
}

.feature-card:hover .feature-hover {
    opacity: 1;
}

/* 愿景区样式 */
.vision-section {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--white) 100%);
    padding: 5rem 0;
}

.vision-content {
    padding: 2rem 0;
}

.vision-text {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.vision-values {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.value-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    color: var(--text-dark);
}

.value-item i {
    font-size: 1.2rem;
}

.vision-image {
    position: relative;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.floating-elements {
    position: relative;
    width: 300px;
    height: 300px;
}

.floating-icon {
    position: absolute;
    width: 60px;
    height: 60px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
    animation: float 3s ease-in-out infinite;
    animation-delay: var(--delay);
}

.floating-icon:nth-child(1) {
    top: 20%;
    left: 20%;
}

.floating-icon:nth-child(2) {
    top: 20%;
    right: 20%;
}

.floating-icon:nth-child(3) {
    bottom: 20%;
    left: 20%;
}

.floating-icon:nth-child(4) {
    bottom: 20%;
    right: 20%;
}

.floating-icon i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

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

/* 联系我们样式 */
.contact-section {
    background: var(--white);
    padding: 5rem 0;
}

.contact-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    height: 100%;
}

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

.contact-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.contact-icon i {
    font-size: 1.5rem;
    color: var(--white);
}

.contact-card h4 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.contact-card p {
    color: var(--text-light);
    margin: 0;
}

/* 页脚样式 */
.footer {
    background: var(--text-dark);
    color: var(--white);
    padding: 2rem 0;
}

.footer-brand {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.footer-text {
    color: #cccccc;
    margin-bottom: 0;
}

.footer-copyright {
    color: #cccccc;
    margin-bottom: 0;
}

/* 模态框样式 */
.modal-content {
    border-radius: var(--border-radius);
    border: none;
    box-shadow: var(--shadow-hover);
}

.modal-header {
    border-bottom: 1px solid var(--secondary-color);
    padding: 1.5rem;
}

.modal-title {
    font-weight: 600;
    color: var(--text-dark);
}

.modal-body {
    padding: 1.5rem;
}

.feature-list {
    list-style: none;
    padding: 0;
    margin: 1rem 0;
}

.feature-list li {
    padding: 0.5rem 0;
    color: var(--text-light);
}

.demo-image {
    margin-top: 1.5rem;
    text-align: center;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-features {
        flex-direction: column;
        gap: 1rem;
    }
    
    .phone-mockup {
        width: 250px;
        height: 500px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .feature-card {
        padding: 2rem 1.5rem;
    }
    
    .vision-values {
        flex-direction: column;
        gap: 1rem;
    }
    
    .floating-elements {
        width: 250px;
        height: 250px;
    }
    
    .floating-icon {
        width: 50px;
        height: 50px;
    }
    
    .floating-icon i {
        font-size: 1.2rem;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .phone-mockup {
        width: 200px;
        height: 400px;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .feature-card {
        padding: 1.5rem 1rem;
    }
    
    .contact-card {
        padding: 1.5rem;
    }
    
    .floating-elements {
        width: 200px;
        height: 200px;
    }
    
    .floating-icon {
        width: 40px;
        height: 40px;
    }
    
    .floating-icon i {
        font-size: 1rem;
    }
}

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

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

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

::-webkit-scrollbar-thumb:hover {
    background: #e55a6b;
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}