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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #000000 0%, #2a1b3d 100%);
  color: #ffffff;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header样式 */
header {
  background: rgba(0, 0, 0, 0.5);
  padding: 1.5rem;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  font-size: 1.8rem;
  font-weight: bold;
  color: #b794f4;
  text-decoration: none;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  color: #ffffff;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-links a:hover {
  color: #b794f4;
}

/* 主要内容 */
main {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 2rem;
}

/* Footer样式 */
footer {
  background: rgba(0, 0, 0, 0.7);
  padding: 1.5rem;
  text-align: center;
  margin-top: auto;
  border-top: 1px solid rgba(183, 148, 244, 0.2);
}

/* 主页样式 */
.home-content {
  text-align: center;
  padding: 3rem 1rem;
}

.home-content h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: #b794f4;
  text-shadow: 0 2px 10px rgba(183, 148, 244, 0.3);
}

.home-content p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  color: #e9d8fd;
}

.home-announcements {
  background: rgba(255, 255, 255, 0.05);
  padding: 2rem;
  border-radius: 10px;
  margin-bottom: 2rem;
  backdrop-filter: blur(10px);
}

.home-announcements h2 {
  color: #b794f4;
  margin-bottom: 1rem;
}

.home-announcements ul {
  list-style: none;
  text-align: left;
  max-width: 600px;
  margin: 0 auto;
}

.home-announcements li {
  padding: 0.8rem 0;
  border-bottom: 1px solid rgba(183, 148, 244, 0.2);
}

.home-announcements li:last-child {
  border-bottom: none;
}

/* 登录/注册页面样式 */
.auth-container {
  max-width: 400px;
  margin: 2rem auto;
  background: rgba(255, 255, 255, 0.05);
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(10px);
}

.auth-container h2 {
  text-align: center;
  margin-bottom: 2rem;
  color: #b794f4;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: #e9d8fd;
}

.form-group input {
  width: 100%;
  padding: 0.8rem;
  border: 1px solid rgba(183, 148, 244, 0.3);
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  font-size: 1rem;
}

.form-group input:focus {
  outline: none;
  border-color: #b794f4;
  box-shadow: 0 0 10px rgba(183, 148, 244, 0.3);
}

/* 验证码样式 */
.captcha-container {
  display: flex;
  align-items: center;
  gap: 10px;
}

.captcha-container input {
  flex: 0 0 120px;
}

#captcha-canvas {
  border: 1px solid rgba(183, 148, 244, 0.3);
  border-radius: 5px;
  background-color: rgba(255, 255, 255, 0.1);
  cursor: pointer;
}

.btn-small {
  padding: 0.5rem 1rem;
  background: linear-gradient(135deg, #4c1d95 0%, #7e22ce 100%);
  color: #ffffff;
  border: none;
  border-radius: 5px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-small:hover {
  background: linear-gradient(135deg, #7e22ce 0%, #4c1d95 100%);
  box-shadow: 0 3px 10px rgba(183, 148, 244, 0.4);
}

.btn {
  width: 100%;
  padding: 0.8rem;
  background: linear-gradient(135deg, #4c1d95 0%, #7e22ce 100%);
  color: #ffffff;
  border: none;
  border-radius: 5px;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn:hover {
  background: linear-gradient(135deg, #7e22ce 0%, #4c1d95 100%);
  box-shadow: 0 5px 15px rgba(183, 148, 244, 0.4);
}

.auth-switch {
  text-align: center;
  margin-top: 1.5rem;
}

.auth-switch a {
  color: #b794f4;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

.auth-switch a:hover {
  color: #e9d8fd;
  text-decoration: underline;
}

/* 用户页面样式 */
.user-profile {
  max-width: 600px;
  margin: 2rem auto;
  background: rgba(255, 255, 255, 0.05);
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(10px);
}

.user-profile h2 {
  text-align: center;
  margin-bottom: 2rem;
  color: #b794f4;
}

.user-info {
  margin-bottom: 2rem;
  text-align: center;
}

.user-info p {
  font-size: 1.5rem;
  color: #e9d8fd;
}

.read-only-textarea {
  width: 100%;
  min-height: 200px;
  padding: 1rem;
  border: 1px solid rgba(183, 148, 244, 0.3);
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  font-size: 1.2rem;
  resize: vertical;
  cursor: default;
}

.read-only-textarea:focus {
  outline: none;
  border-color: #b794f4;
}

/* 响应式设计 */
@media (max-width: 768px) {
  nav {
    flex-direction: column;
    gap: 1rem;
  }
  
  .home-content h1 {
    font-size: 2rem;
  }
  
  .home-content p {
    font-size: 1rem;
  }
  
  main {
    padding: 1rem;
  }
}