/* 
   undressai.space CSS
   紫色主题风格与响应式设计
*/

:root {
  --primary: #9c27b0;
  --primary-light: #d05ce3;
  --primary-dark: #6a0080;
  --accent: #ffd54f;
  --text-dark: #212121;
  --text-light: #ffffff;
  --bg-light: #ffffff;
  --bg-dark: #f5f5f5;
  --box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

/* 基础样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--bg-light);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

a {
  text-decoration: none;
  color: var(--primary);
  transition: var(--transition);
}

a:hover {
  color: var(--primary-dark);
}

ul {
  list-style: none;
}

/* 标题样式 */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  margin-bottom: 1rem;
  font-weight: 700;
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
  text-align: center;
  margin-bottom: 2rem;
}

h3 {
  font-size: 1.5rem;
}

section {
  padding: 5rem 0;
}

/* 头部样式 */
.header {
  background-color: var(--bg-light);
  box-shadow: var(--box-shadow);
  position: fixed;
  width: 100%;
  top: 0;
  left: 0;
  z-index: 1000;
  padding: 1rem 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  width: 40px;
  height: 40px;
}

.logo span {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
}

nav ul {
  display: flex;
  gap: 2rem;
}

nav a {
  color: var(--text-dark);
  font-weight: 500;
  position: relative;
}

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

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

nav a:hover::after {
  width: 100%;
}

/* 英雄区域样式 */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--text-light);
  padding: 10rem 0 5rem;
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  margin-bottom: 1.5rem;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 2.5rem;
}

.btn {
  display: inline-block;
  background-color: var(--accent);
  color: var(--text-dark);
  padding: 0.8rem 2rem;
  border-radius: 50px;
  font-weight: 600;
  transition: var(--transition);
}

.btn:hover {
  background-color: #ffb300;
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
  color: var(--text-dark);
}

/* 特性区域样式 */
.features {
  background-color: var(--bg-light);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.feature-card {
  background-color: var(--bg-light);
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  text-align: center;
  transition: var(--transition);
}

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

.feature-icon {
  width: 60px;
  height: 60px;
  margin-bottom: 1.5rem;
}

.feature-card h3 {
  color: var(--primary);
  margin-bottom: 1rem;
}

/* 关于我们区域样式 */
.about {
  background-color: var(--bg-dark);
  text-align: center;
}

.about p {
  max-width: 800px;
  margin: 0 auto;
  font-size: 1.1rem;
}

/* FAQ区域样式 */
.faq {
  background-color: var(--bg-light);
}

.faq-item {
  background-color: var(--bg-dark);
  padding: 1.5rem;
  border-radius: var(--border-radius);
  margin-bottom: 1.5rem;
}

.faq-item h3 {
  color: var(--primary);
  margin-bottom: 0.5rem;
}

/* CTA区域样式 */
.cta {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--text-light);
  text-align: center;
}

.cta h2 {
  margin-bottom: 1rem;
}

.cta p {
  max-width: 600px;
  margin: 0 auto 2rem;
  font-size: 1.2rem;
}

/* 页脚样式 */
footer {
  background-color: #212121;
  color: var(--text-light);
  padding: 4rem 0 2rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 2rem;
}

.footer-links {
  display: flex;
  gap: 4rem;
}

.footer-column h4 {
  color: var(--accent);
  margin-bottom: 1.2rem;
  font-size: 1.2rem;
}

.footer-column ul {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.footer-column a {
  color: rgba(255, 255, 255, 0.7);
}

.footer-column a:hover {
  color: var(--text-light);
}

.copyright {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* 响应式设计 */
@media (max-width: 992px) {
  h1 {
    font-size: 2.2rem;
  }
  
  h2 {
    font-size: 1.8rem;
  }
}

@media (max-width: 768px) {
  .header .container {
    flex-direction: column;
    gap: 1rem;
  }
  
  nav ul {
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem 2rem;
  }
  
  .hero {
    padding: 8rem 0 4rem;
  }
  
  .footer-content {
    flex-direction: column;
    gap: 2rem;
  }
  
  .footer-links {
    gap: 2rem;
  }
}

@media (max-width: 576px) {
  section {
    padding: 3rem 0;
  }
  
  h1 {
    font-size: 1.8rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  .feature-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-links {
    flex-direction: column;
    gap: 2rem;
  }
}