/* ============================================================
   Personal site styles. Light + dark mode, no framework.
   Visual layout modeled after yib0liu.github.io (VuePress style).
   ============================================================ */

:root {
  --bg:        #ffffff;
  --fg:        #2c3e50;
  --muted:    #6a737d;
  --accent:    #3eaf7c;
  --border:    #eaecef;
  --card-bg:    #ffffff;
  --code-bg:    #f6f8fa;
  --shadow:    0 1px 2px rgba(0,0,0,.04);
  --max-width:    900px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:    #1a1a1a;
    --fg:    #d0d4d8;
    --muted:    #9aa0a6;
    --accent:    #4ec18e;
    --border:    #2a2f36;
    --card-bg:    #20242a;
    --code-bg:    #2a2f36;
    --shadow:    0 1px 2px rgba(0,0,0,.4);
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB",
               "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

/* ------------------------------ navbar ------------------------------ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .8rem 1.5rem;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  backdrop-filter: saturate(180%) blur(5px);
}
.navbar .site-name {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--fg);
}
.navbar .nav-links a {
  margin-left: 1.5rem;
  color: var(--fg);
  font-weight: 500;
}
.navbar .nav-links a:hover { color: var(--accent); }

/* ------------------------------ page ------------------------------ */
.page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

h2 {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  padding-bottom: .35rem;
  border-bottom: 1px solid var(--border);
  font-size: 1.5rem;
  font-weight: 600;
}

p { margin: .8rem 0; }
ul { margin: .5rem 0; padding-left: 1.4rem; }
li { margin: .2rem 0; }

/* ------------------------------ profile ------------------------------ */
.profile {
  display: flex;
  align-items: center;
  gap: 1.8rem;
  padding: 1.5rem 0 1rem;
  flex-wrap: wrap;
}
.profile .image img {
  width: 160px;
  height: 160px;
  object-fit: cover;
  border-radius: 50%;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.profile .info { flex: 1; min-width: 240px; }
.profile .name {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: .25rem;
}
.profile .bio p {
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
}
.profile .socials {
  display: flex;
  gap: .6rem;
  margin: .8rem 0 .5rem;
  flex-wrap: wrap;
}
.profile .socials a {
  display: inline-flex;
  width: 28px;
  height: 28px;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  transition: background .15s ease;
}
.profile .socials a:hover { background: var(--code-bg); }
.profile .socials img {
  width: 22px;
  height: 22px;
  filter: grayscale(20%);
}
.profile .contact .email {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, monospace;
  font-size: .92rem;
}

/* ------------------------------ md-card ------------------------------ */
.md-card {
  display: flex;
  gap: 1rem;
  padding: 1rem;
  margin: 1rem 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card-bg);
  box-shadow: var(--shadow);
}
.md-card .card-image {
  flex-shrink: 0;
  width: 180px;
}
.md-card .card-image img {
  width: 100%;
  height: 120px;
  object-fit: cover;
  border-radius: 4px;
  background: var(--code-bg);
}
.md-card .card-content { flex: 1; min-width: 0; }
.md-card .card-content p { margin: .35rem 0; }
.md-card .card-content ul { margin: .4rem 0; }

@media (max-width: 600px) {
  .md-card { flex-direction: column; }
  .md-card .card-image { width: 100%; }
  .md-card .card-image img { height: 180px; }
}

/* ------------------------------ footer ------------------------------ */
.page-edit {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: .85rem;
  text-align: right;
}
.page-edit .prefix { margin-right: .3rem; }