:root {
    --bg-color: #121212;       /* 深背景色 */
    --card-bg: #1e1e1e;        /* 卡片/區塊背景 */
    --text-primary: #e0e0e0;   /* 主文字顏色 */
    --text-secondary: #b0b0b0; /* 次要文字顏色 */
    --accent-color: #74c0ff;   /* AI 說紫色強調色很配黑色，但我選了藍色:3 */
    --nav-hover: #333;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: 'PingFang TC', 'Microsoft JhengHei', sans-serif;
    margin: 0;
    line-height: 1.6;
}

/* 頁首樣式 */
header {
    background-color: var(--card-bg);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #333;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent-color);
    letter-spacing: 1px;
}

nav a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s;
}

nav a:hover {
    color: var(--accent-color);
}

/* 主內容區樣式 */
#blog {
    border: #3f3f3f solid 1px;
    border-radius: 30px;
    max-width: 800px;
    margin: 40px auto;
    padding: 0 20px;
}
#comment {
    border: #3f3f3f solid 1px;
    border-radius: 30px;
    max-width: 800px;
    margin: 40px auto;
    padding: 0 20px;
}

#posts-list
{
    max-width: 800px;
    margin: 40px auto;
    padding: 0 20px;
}

#timeline
{
    max-width: 800px;
    margin: 40px auto;
    padding: 0 20px;
}

#title {
font-size: 2.5rem;
margin-bottom: 0.5rem;
}


/* 頁尾樣式 */
footer {
    text-align: center;
    padding: 2rem;
    margin-top: 50px;
    background-color: var(--card-bg);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

a {
    color: var(--accent-color);
    text-decoration: none;
}

/* 讓 Markdown 裡的圖片不要爆出去 */
img {
    max-width: 100%;
    border-radius: 8px;
}

#home {
    max-width: 900px;
    margin: 40px auto;
    padding: 20px;
}

.hero {
    text-align: center;
    margin-bottom: 50px;
}

article {
    background-color: var(--card-bg);
    border: 1px solid #333;
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 10px;
    transition: transform 0.2s;
}

.post-card:hover {
    transform: translateY(-3px);
}

.post-time {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.post-description {
    margin-top: 10px;
}

.tags {
    margin-top: 10px;
}

.tag {
    display: inline-block;
    background-color: #2a2a2a;
    color: var(--accent-color);

    padding: 4px 10px;
    margin-right: 8px;
    margin-top: 5px;

    border-radius: 999px;

    font-size: 0.85rem;
}

.des {
    color: white;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}

#menu-toggle {
  display: none;
}

.hamburger {
  display: none;
  font-size: 24px;
  cursor: pointer;
}

.nav-links {
  display: flex;
  gap: 1rem;
}

/* 手機版 */
@media (max-width: 768px) {

  .navbar {
    position: relative;
  }

  .hamburger {
    display: block;
    color: white;
    font-size: 24px;
    cursor: pointer;
  }

  .nav-links {
    display: none;

    position: absolute;
    top: 40px;
    right: 0;

    width: 160px;

    background: #1e1e1e;
    border: 1px solid #333;
    border-radius: 12px;

    padding: 10px;

    z-index: 999;

    flex-direction: column;
  }

  .nav-links a {
    display: block;

    margin: 0;
    padding: 10px;

    white-space: nowrap;
  }

  #menu-toggle:checked ~ .nav-links {
    display: flex;
  }

}