/* 页眉样式 */

.header {
  background: var(--sidebar);
  color: white;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header .logo {
  width: 40px;
  height: 40px;
  cursor: pointer;
}

.header h1 {
  font-size: 20px;
}

/* Upcoming 信息 */
.header-upcoming {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  margin-right: auto;
  font-size: 14px;
}

.upcoming-label {
  color: rgba(255, 255, 255, 0.8);
  font-weight: 500;
}

.upcoming-date {
  color: #fbbf24;
  font-weight: 600;
}

.upcoming-location {
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
}


.header .search {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 4px;
  padding: 8px 12px;
  color: white;
  width: 200px;
}

.header .search::placeholder {
  color: rgba(255, 255, 255, 0.7);
}

/* 登录注册按钮 */
.header-login {
  display: flex;
  gap: 8px;
  align-items: center;
}

.header-login-btn {
  padding: 6px 12px;
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
  border: none;
  border-radius: 6px;
  color: white;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: all 0.3s;
  box-shadow: 0 2px 6px rgba(59, 130, 246, 0.3);
}

.header-login-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.header-register-btn {
  padding: 6px 12px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 6px;
  color: rgba(255, 255, 255, 0.8);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.3s;
}

.header-register-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
}

/* 菜单切换按钮 */
.menu-toggle {
  background: none;
  border: none;
  color: white;
  font-size: 20px;
  cursor: pointer;
  padding: 8px;
  border-radius: 4px;
  transition: background 0.2s;
}

.menu-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
}