/* ==========================================================================
   周米米的时光机 — Stylesheet
   简洁、可读、对儿童友好的色彩
   ========================================================================== */

:root {
  --color-bg: #fffaf2;
  --color-surface: #ffffff;
  --color-text: #2a2a2a;
  --color-muted: #777;
  --color-primary: #ff7e6b;       /* 番茄橙 */
  --color-primary-soft: #ffe5df;
  --color-accent: #4ec5a4;        /* 薄荷绿 */
  --color-accent-soft: #dff5ec;
  --color-warn: #f0c75e;          /* 蜜糖黄 */
  --color-line: #efe7dd;
  --radius: 12px;
  --maxw: 880px;
  --shadow: 0 6px 24px rgba(60, 30, 10, 0.06);
  --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB",
               -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }
html { font-size: 16px; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; border-radius: var(--radius); }
time { color: var(--color-muted); }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* ---------- Header & Nav ---------- */
.site-header {
  background: var(--color-surface);
  border-bottom: 2px solid var(--color-line);
  position: sticky; top: 0; z-index: 10;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px; gap: 16px; flex-wrap: wrap;
}
.brand {
  display: flex; align-items: center; gap: 12px; color: var(--color-text);
}
.brand:hover { text-decoration: none; }
.brand-avatar {
  width: 44px; height: 44px; border-radius: 50%;
  border: 2px solid var(--color-primary-soft);
}
.brand-text strong { display: block; font-size: 1.1rem; color: var(--color-primary); }
.brand-text small { color: var(--color-muted); font-size: 0.78rem; }

.site-nav .nav-list {
  display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; list-style: none;
}
.site-nav .nav-list a {
  display: inline-block; padding: 6px 12px; border-radius: 999px;
  color: var(--color-text); font-size: 0.95rem;
}
.site-nav .nav-list a:hover { background: var(--color-primary-soft); text-decoration: none; }
.site-nav .nav-list a[aria-current="page"] {
  background: var(--color-primary); color: #fff;
}
.nav-toggle { display: none; }

/* ---------- Main ---------- */
.main { padding: 32px 0 64px; }
.page-header { margin-bottom: 24px; }
.page-header h1 {
  font-size: 2rem; margin: 0 0 6px; color: var(--color-text);
  border-left: 6px solid var(--color-primary); padding-left: 12px;
}
.page-kicker {
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--color-accent); font-size: 0.78rem; margin: 0;
}
.page-desc { color: var(--color-muted); margin: 8px 0 0; }
.page-intro { margin-top: 16px; }

/* ---------- Home ---------- */
.hero {
  text-align: center; padding: 28px 12px 8px;
}
.hero h1 {
  font-size: 2rem; margin: 0 0 8px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { color: var(--color-muted); margin: 0; }
.section-title {
  font-size: 1.3rem; margin: 36px 0 14px;
  border-bottom: 2px dashed var(--color-line); padding-bottom: 6px;
}

/* ---------- Cards ---------- */
.cards { display: grid; gap: 16px; grid-template-columns: 1fr; }
.sections-grid { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
@media (min-width: 640px) {
  .cards:not(.sections-grid) { grid-template-columns: repeat(2, 1fr); }
}
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--shadow);
}
.card-title { margin: 0 0 6px; font-size: 1.1rem; }
.card-title a { color: var(--color-text); }
.card-title a:hover { color: var(--color-primary); text-decoration: none; }
.card-meta { color: var(--color-muted); font-size: 0.82rem; margin: 0 0 8px; }
.card-summary { margin: 0 0 8px; color: #444; font-size: 0.95rem; }
.card-tags { margin: 6px 0 0; font-size: 0.82rem; }
.tag, .series {
  display: inline-block; margin-right: 6px; padding: 2px 8px;
  background: var(--color-accent-soft); color: var(--color-accent);
  border-radius: 999px; font-size: 0.78rem;
}
.series { background: var(--color-primary-soft); color: var(--color-primary); }
.cat { color: var(--color-primary); }

/* ---------- Article ---------- */
.page-single .article-header {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 18px 22px;
  box-shadow: var(--shadow);
  border-left: 6px solid var(--color-primary);
  margin-bottom: 18px;
}
.article-meta { color: var(--color-muted); font-size: 0.88rem; margin: 6px 0 0; }
.article-content {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 24px 28px;
  box-shadow: var(--shadow);
  line-height: 1.85;
}
.article-content h2 { border-left: 4px solid var(--color-accent); padding-left: 10px; }
.article-content h3 { color: var(--color-primary); }
.article-content blockquote {
  border-left: 4px solid var(--color-warn);
  background: #fff7e2; padding: 10px 14px; margin: 16px 0;
  border-radius: 0 var(--radius) var(--radius) 0;
}
.article-content pre {
  background: #2a2a2a; color: #f8f8f2;
  padding: 14px 16px; border-radius: var(--radius); overflow-x: auto;
}
.article-content code { background: var(--color-primary-soft); padding: 1px 5px; border-radius: 4px; }
.article-content pre code { background: transparent; padding: 0; }
.article-tags { margin-top: 16px; }
.article-nav {
  display: flex; justify-content: space-between; gap: 12px; margin-top: 20px;
}
.article-nav a {
  flex: 1; padding: 10px 14px; background: var(--color-surface);
  border: 1px solid var(--color-line); border-radius: var(--radius); color: var(--color-text);
}
.article-nav .next { text-align: right; }

/* ---------- Timeline (Highlight) ---------- */
.timeline {
  list-style: none; padding: 0; margin: 0;
  position: relative;
}
.timeline::before {
  content: ""; position: absolute; left: 90px; top: 0; bottom: 0;
  width: 2px; background: var(--color-line);
}
.timeline-item {
  display: grid; grid-template-columns: 78px 1fr;
  gap: 16px; padding: 10px 0;
  position: relative;
}
.timeline-time {
  text-align: right; color: var(--color-primary);
  font-weight: 600; padding-top: 2px;
}
.timeline-item::before {
  content: "✨"; position: absolute; left: 84px; top: 12px;
  background: var(--color-bg); padding: 0 2px;
}
.timeline-body {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 12px 16px;
  box-shadow: var(--shadow);
}
.timeline-body h3 { margin: 0 0 6px; font-size: 1.05rem; }
.timeline-tags { margin: 6px 0 0; }

/* ---------- Me 单页 ---------- */
.page-me .me-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 26px;
}
.me-card h2 {
  margin-top: 18px; border-left: 4px solid var(--color-accent); padding-left: 10px;
}
.me-card ul { padding-left: 22px; }

/* ---------- Terms list ---------- */
.term-list { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.term-list li {
  background: var(--color-surface); border: 1px solid var(--color-line);
  padding: 8px 14px; border-radius: 999px;
}
.term-list .count { color: var(--color-muted); font-size: 0.85rem; }

.empty {
  background: var(--color-primary-soft);
  border-radius: var(--radius);
  padding: 22px;
  text-align: center;
  color: var(--color-primary);
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 2px solid var(--color-line);
  background: var(--color-surface);
  padding: 22px 0;
  margin-top: 30px;
  text-align: center;
  color: var(--color-muted);
  font-size: 0.88rem;
}
.footer-meta { margin: 4px 0; }

/* ---------- Responsive ---------- */
@media (max-width: 560px) {
  .nav-toggle {
    display: inline-block; padding: 6px 12px; border-radius: 999px;
    border: 1px solid var(--color-line); background: var(--color-surface);
  }
  .site-nav .nav-list { display: none; width: 100%; }
  .site-nav .nav-list.open { display: flex; }
  .header-inner { padding: 10px 16px; }
  .timeline::before { left: 64px; }
  .timeline-item { grid-template-columns: 56px 1fr; }
  .timeline-item::before { left: 58px; }
}