/* 留言板样式 */

.guestbook-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
}

/* 留言表单 */
.guestbook-form {
  padding: 24px;
  margin-bottom: 32px;
}

.guestbook-form h3 {
  font-size: 1.5rem;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.guestbook-subtitle {
  color: var(--text-muted);
  margin-bottom: 20px;
  font-size: 0.875rem;
}

.guestbook-form form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 0.875rem;
  transition: all 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.1);
}

.form-group textarea {
  min-height: 80px;
  resize: vertical;
}

/* 留言显示区域 */
.guestbook-display {
  margin-top: 32px;
}

.guestbook-display h4 {
  font-size: 1.125rem;
  margin-bottom: 16px;
  color: var(--text-secondary);
}

/* 弹幕式留言 */
.guestbook-danmaku {
  position: relative;
  min-height: 200px;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 12px;
  padding: 20px;
  overflow: hidden;
}

.guestbook-danmaku-item {
  display: inline-block;
  padding: 8px 16px;
  margin: 8px;
  background: rgba(88, 166, 255, 0.1);
  border: 1px solid rgba(88, 166, 255, 0.2);
  border-radius: 20px;
  font-size: 0.875rem;
  white-space: nowrap;
  animation: fadeInUp 0.5s ease, floatUp 10s linear forwards;
  position: relative;
}

.guestbook-danmaku-item:hover {
  background: rgba(88, 166, 255, 0.2);
  transform: scale(1.05);
}

.danmaku-name {
  font-weight: 600;
  margin-right: 8px;
}

.danmaku-text {
  color: var(--text-primary);
}

/* 弹幕动画 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes floatUp {
  0% {
    opacity: 1;
    transform: translateY(0);
  }
  70% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translateY(-150px);
  }
}

/* 通知动画 */
@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes fadeOut {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
  }
}

/* 响应式优化 */
@media (max-width: 768px) {
  .guestbook-container {
    padding: 16px;
  }

  .guestbook-form {
    padding: 16px;
  }

  .guestbook-form h3 {
    font-size: 1.25rem;
  }

  .form-group input,
  .form-group textarea {
    padding: 10px 12px;
    font-size: 16px; /* 防止 iOS 缩放 */
  }

  .guestbook-danmaku {
    padding: 12px;
    min-height: 150px;
  }

  .guestbook-danmaku-item {
    font-size: 0.8rem;
    padding: 6px 12px;
  }
}

/* 留言数量提示 */
.guestbook-count {
  display: inline-block;
  padding: 4px 12px;
  background: var(--bg-secondary);
  border-radius: 12px;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

/* 空状态 */
.guestbook-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
}

.guestbook-empty-icon {
  font-size: 3rem;
  margin-bottom: 16px;
}