/* 更新日誌頁面專用樣式 */

.changelog-page {
  padding-top: 120px;
  padding-bottom: 80px;
  min-height: 100vh;
  background: var(--background-color);
}

.changelog-page h1 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--text-color) 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.changelog-intro {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 640px;
  margin: 0 auto 56px;
  line-height: 1.8;
}

/* 時間軸：以左側直線串起所有版本 */
.changelog-timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: 36px;
}

.changelog-timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--primary-color) 0%, var(--border-color) 100%);
}

.changelog-version {
  position: relative;
  margin-bottom: 28px;
  padding: 28px 32px;
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  transition: var(--transition);
}

.changelog-version:hover {
  border-color: var(--primary-color);
}

/* 時間軸上對應各版本的圓點 */
.changelog-version::before {
  content: '';
  position: absolute;
  left: -36px;
  top: 34px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--background-color);
  border: 3px solid var(--border-color);
  transition: var(--transition);
}

/* 最新版本的圓點加上強調色 */
.changelog-version:first-child::before {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
}

.changelog-version-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.changelog-version-number {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-color);
}

.changelog-latest {
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  color: white;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
}

.changelog-date {
  margin-left: auto;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.changelog-entries {
  list-style: none;
}

.changelog-entries li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 7px 0;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* 類型標籤寬度固定，讓各行內文的左緣對齊 */
.changelog-tag {
  flex-shrink: 0;
  min-width: 82px;
  margin-top: 2px;
  padding: 3px 10px;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1.7;
  text-align: center;
}

.changelog-tag-added {
  color: #34d399;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.35);
}

.changelog-tag-fixed {
  color: #fbbf24;
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.35);
}

.changelog-tag-changed {
  color: var(--primary-light);
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.35);
}

.changelog-entry-text {
  flex: 1;
  min-width: 0;
}

.changelog-empty {
  text-align: center;
  color: var(--text-secondary);
  padding: 40px 0;
}

@media (max-width: 768px) {
  .changelog-page h1 {
    font-size: 2rem;
  }

  .changelog-timeline {
    padding-left: 24px;
  }

  .changelog-timeline::before {
    left: 3px;
  }

  .changelog-version {
    padding: 24px 20px;
  }

  .changelog-version::before {
    left: -24px;
    top: 32px;
    width: 10px;
    height: 10px;
  }

  /* 窄畫面改為標籤在上、內文在下，避免內文被壓成細長一條 */
  .changelog-entries li {
    flex-direction: column;
    gap: 6px;
  }

  .changelog-tag {
    min-width: 0;
    align-self: flex-start;
  }

  .changelog-date {
    margin-left: 0;
  }
}