/* ============================================
   CSS变量定义 - 黑粉渐变配色系统
   ============================================ */
:root {
  /* 主色调 - 黑色系 */
  --color-black: #000000;
  --color-black-light: #0a0a0a;
  --color-black-lighter: #1a1a1a;
  
  /* 粉色系 */
  --color-pink: #FF1493;
  --color-pink-light: #FF69B4;
  --color-pink-lighter: #FFB6C1;
  --color-pink-dark: #C71585;
  
  /* 渐变定义 */
  --gradient-primary: linear-gradient(135deg, #000000 0%, #FF1493 100%);
  --gradient-secondary: linear-gradient(135deg, #000000 0%, #FF69B4 100%);
  --gradient-radial: radial-gradient(circle at center, #FF1493 0%, #000000 100%);
  --gradient-text: linear-gradient(135deg, #FF1493 0%, #FF69B4 100%);
  
  /* 文字颜色 */
  --color-text-primary: #ffffff;
  --color-text-secondary: #cccccc;
  --color-text-muted: #888888;
  
  /* 间距 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  /* 字体大小 */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 3rem;
  --font-size-4xl: 4rem;
  
  /* 过渡动画 */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* 阴影 */
  --shadow-sm: 0 2px 4px rgba(255, 20, 147, 0.1);
  --shadow-md: 0 4px 8px rgba(255, 20, 147, 0.2);
  --shadow-lg: 0 8px 16px rgba(255, 20, 147, 0.3);
  --shadow-glow: 0 0 20px rgba(255, 20, 147, 0.5);
  
  /* 边框圆角 */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-full: 9999px;
}

/* ============================================
   基础重置样式
   ============================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--color-black);
  color: var(--color-text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ============================================
   基础布局样式
   ============================================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* 隐藏滚动条但保持功能 */
::-webkit-scrollbar {
  width: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gradient-secondary);
}

/* ============================================
   导航栏样式
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-base);
}

.navbar::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.navbar:hover::after {
  opacity: 1;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-sm) var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo样式 */
.nav-logo a {
  font-size: var(--font-size-xl);
  font-weight: 700;
  text-decoration: none;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: all var(--transition-base);
  position: relative;
}

.nav-logo a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-base);
}

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

/* 导航菜单 */
.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
  align-items: center;
}

.nav-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-base);
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.nav-link::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: -1;
}

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

.nav-link:hover::before,
.nav-link.active::before {
  opacity: 0.2;
}

.nav-link.active {
  background: linear-gradient(135deg, rgba(255, 20, 147, 0.1) 0%, rgba(255, 105, 180, 0.1) 100%);
  border: 1px solid rgba(255, 20, 147, 0.3);
}

/* 汉堡菜单按钮（移动端） */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  z-index: 1001;
  position: relative;
}

.nav-toggle span {
  width: 25px;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  display: block;
}

.nav-toggle:hover span {
  background: var(--gradient-secondary);
  box-shadow: 0 0 10px rgba(255, 20, 147, 0.5);
}

/* 汉堡菜单激活状态 */
.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

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

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* 移动端导航菜单样式 */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: var(--spacing-md);
    gap: var(--spacing-sm);
    border-top: 1px solid rgba(255, 20, 147, 0.2);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-link {
    width: 100%;
    text-align: center;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
  }

  .nav-container {
    padding: var(--spacing-sm) var(--spacing-md);
  }
}

/* ============================================
   作品展示区域样式
   ============================================ */
.projects {
  padding: var(--spacing-xl) 0;
  position: relative;
  min-height: 100vh;
}

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-lg);
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

/* ============================================
   项目卡片样式
   ============================================ */
.project-card {
  position: relative;
  background: var(--color-black-lighter);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  cursor: pointer;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.6s ease forwards;
}

/* 渐变边框效果 - 使用伪元素实现 */
.project-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 2px;
  background: var(--gradient-primary);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: 1;
  pointer-events: none;
}

/* 悬停效果 */
.project-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: var(--shadow-glow);
}

.project-card:hover::before {
  opacity: 1;
}

/* 项目图片容器 */
.project-image {
  position: relative;
  width: 100%;
  height: 250px;
  overflow: hidden;
  background: var(--color-black);
}

.project-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-placeholder svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 项目遮罩层 */
.project-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: 2;
}

.project-card:hover .project-overlay {
  opacity: 1;
}

/* 播放按钮 */
.play-button {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  box-shadow: var(--shadow-md);
}

.play-button svg {
  width: 40px;
  height: 40px;
  margin-left: 4px; /* 视觉居中调整 */
}

.play-button:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-glow);
}

.play-button:active {
  transform: scale(0.95);
}

/* 项目内容 */
.project-content {
  padding: var(--spacing-md);
  position: relative;
  z-index: 1;
}

.project-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
  transition: color var(--transition-base);
}

.project-card:hover .project-title {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.project-description {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 项目标签 */
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-sm);
}

.tag {
  display: inline-block;
  padding: 0.4rem 0.8rem;
  font-size: var(--font-size-sm);
  background: var(--color-black);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.tag::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: -1;
}

.tag:hover {
  color: var(--color-text-primary);
  border-color: var(--color-pink);
  transform: translateY(-2px);
}

.tag:hover::before {
  opacity: 0.2;
}

/* 卡片动画延迟 */
.project-card:nth-child(1) {
  animation-delay: 0.1s;
}

.project-card:nth-child(2) {
  animation-delay: 0.2s;
}

.project-card:nth-child(3) {
  animation-delay: 0.3s;
}

.project-card:nth-child(4) {
  animation-delay: 0.4s;
}

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

/* ============================================
   Hero区域样式
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--color-black);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md);
}

.hero-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-scroll {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-lg);
  animation: fadeInUp 0.8s ease 0.4s both;
  cursor: pointer;
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid var(--color-pink);
  border-bottom: 2px solid var(--color-pink);
  transform: rotate(45deg);
  transition: transform var(--transition-base);
}

.hero-scroll:hover .scroll-arrow {
  transform: rotate(45deg) translateY(5px);
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background: var(--gradient-radial);
  opacity: 0.3;
  animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 0.3;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(1.1);
  }
}

/* ============================================
   视频模态框样式
   ============================================ */
.video-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.video-modal.active {
  opacity: 1;
  visibility: visible;
}

.video-modal-content {
  position: relative;
  width: 90%;
  max-width: 1200px;
  max-height: 90vh;
  background: var(--color-black-lighter);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  border: 2px solid transparent;
  background-clip: padding-box;
  box-shadow: var(--shadow-glow);
  overflow: hidden;
}

.video-modal-content::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 2px;
  background: var(--gradient-primary);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  z-index: -1;
}

.video-modal-close {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: rgba(255, 20, 147, 0.2);
  border: 1px solid var(--color-pink);
  color: var(--color-text-primary);
  font-size: var(--font-size-2xl);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  z-index: 2001;
}

.video-modal-close:hover {
  background: var(--gradient-primary);
  transform: rotate(90deg);
  box-shadow: var(--shadow-glow);
}

.video-container {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--color-black);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: var(--spacing-md);
}

.video-container video {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.video-info {
  padding: var(--spacing-md);
  text-align: center;
}

.video-info h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-sm);
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.video-info p {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ============================================
   页脚样式
   ============================================ */
.footer {
  background: var(--color-black-lighter);
  border-top: 1px solid transparent;
  padding: var(--spacing-lg) 0;
  margin-top: var(--spacing-xl);
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gradient-primary);
}

.footer .container {
  text-align: center;
}

.footer p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 768px) {
  .hero-title {
    font-size: var(--font-size-2xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-lg);
  }

  .section-title {
    font-size: var(--font-size-2xl);
  }

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

  .video-modal-content {
    width: 95%;
    padding: var(--spacing-sm);
  }

  .video-info h3 {
    font-size: var(--font-size-xl);
  }
}

/* ============================================
   联系页面样式
   ============================================ */
.contact-section {
  padding: calc(var(--spacing-xl) + 80px) 0 var(--spacing-xl);
  min-height: 100vh;
  position: relative;
  background: var(--color-black);
}

.contact-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  animation: fadeInUp 0.8s ease;
}

.contact-main-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  display: inline-block;
}

.contact-main-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
}

.contact-main-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: var(--spacing-lg) auto 0;
  line-height: 1.8;
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--spacing-lg);
  max-width: 1200px;
  margin: 0 auto;
  animation: fadeInUp 0.8s ease 0.2s both;
}

/* 联系信息卡片 */
.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.contact-info-card {
  background: var(--color-black-lighter);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  border: 2px solid transparent;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.6s ease;
}

.contact-info-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 2px;
  background: var(--gradient-primary);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: 1;
  pointer-events: none;
}

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

.contact-info-card:hover::before {
  opacity: 1;
}

.contact-info-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
  transition: transform var(--transition-base);
  position: relative;
  z-index: 2;
}

.contact-info-icon svg {
  width: 30px;
  height: 30px;
  color: var(--color-text-primary);
}

.contact-info-card:hover .contact-info-icon {
  transform: scale(1.1) rotate(5deg);
}

.contact-info-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
  position: relative;
  z-index: 2;
}

.contact-info-link {
  font-size: var(--font-size-base);
  color: var(--color-pink);
  text-decoration: none;
  transition: all var(--transition-base);
  display: inline-block;
  position: relative;
  z-index: 2;
}

.contact-info-link:hover {
  color: var(--color-pink-light);
  transform: translateX(5px);
}

.contact-info-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-base);
}

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

/* 联系表单 */
.contact-form {
  background: var(--color-black-lighter);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.6s ease 0.3s both;
}

.contact-form::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 2px;
  background: var(--gradient-primary);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0.3;
  z-index: 0;
  pointer-events: none;
}

.form-title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  z-index: 1;
}

.form-group {
  margin-bottom: var(--spacing-md);
  position: relative;
  z-index: 1;
}

.form-group label {
  display: block;
  font-size: var(--font-size-base);
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-primary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-sm);
  background: var(--color-black);
  border: 2px solid rgba(255, 20, 147, 0.2);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-size: var(--font-size-base);
  font-family: inherit;
  transition: all var(--transition-base);
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-pink);
  box-shadow: 0 0 0 3px rgba(255, 20, 147, 0.1);
  background: var(--color-black-light);
}

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

.error-message {
  display: block;
  color: var(--color-pink);
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xs);
  min-height: 20px;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.error-message.show {
  opacity: 1;
}

.submit-button {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-size: var(--font-size-lg);
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  transition: all var(--transition-base);
  position: relative;
  z-index: 1;
  overflow: hidden;
  margin-top: var(--spacing-md);
}

.submit-button::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-secondary);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: -1;
}

.submit-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.submit-button:hover::before {
  opacity: 1;
}

.submit-button:active {
  transform: translateY(0);
}

.submit-button svg {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-base);
}

.submit-button:hover svg {
  transform: translateX(5px);
}

.form-message {
  margin-top: var(--spacing-md);
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  text-align: center;
  font-size: var(--font-size-base);
  min-height: 20px;
  opacity: 0;
  transition: all var(--transition-base);
  position: relative;
  z-index: 1;
}

.form-message.show {
  opacity: 1;
}

.form-message.success {
  background: rgba(255, 20, 147, 0.1);
  border: 1px solid var(--color-pink);
  color: var(--color-pink-light);
}

.form-message.error {
  background: rgba(255, 20, 147, 0.1);
  border: 1px solid var(--color-pink);
  color: var(--color-pink);
}

/* 响应式设计 - 联系页面 */
@media (max-width: 968px) {
  .contact-wrapper {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .contact-info {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .contact-info-card {
    flex: 1;
    min-width: 250px;
  }
}

@media (max-width: 768px) {
  .contact-section {
    padding: calc(var(--spacing-lg) + 60px) 0 var(--spacing-lg);
  }

  .contact-main-title {
    font-size: var(--font-size-3xl);
  }

  .contact-main-description {
    font-size: var(--font-size-base);
  }

  .contact-info {
    flex-direction: column;
  }

  .contact-info-card {
    width: 100%;
  }

  .contact-form {
    padding: var(--spacing-md);
  }

  .form-title {
    font-size: var(--font-size-xl);
  }
}