/* ============================================================
   项目推荐（门户【推荐】栏目）
   #/recommendations        卡片网格
   #/recommendations/{id}   详情（复用文章页骨架，仅补充封面与「访问项目」按钮）

   强调色：靛蓝 #4f46e5 —— 与首页 AI 动态的青（#22d3ee）、学院的橙区分开，
   让「推荐」在导航与列表里有自己的识别色。
   ============================================================ */

:root {
  --pick: #4f46e5;
  --pick-soft: #eceafd;
}

/* ---------- 列表页 ---------- */
.picks-page { padding: 6px 0 20px; }

.picks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 22px;
  margin-top: 26px;
}

.pick-card {
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
  overflow: hidden;
  color: inherit;
  transition: transform .28s cubic-bezier(.22,1,.36,1),
              box-shadow .28s cubic-bezier(.22,1,.36,1),
              border-color .28s ease;
}
.pick-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
  border-color: rgba(79, 70, 229, .45);
}

.pick-cover {
  position: relative;
  aspect-ratio: 21 / 9;
  background:
    linear-gradient(135deg, rgba(79, 70, 229, .1), rgba(29, 95, 191, .08)),
    var(--paper);
  border-bottom: 1px solid var(--line-soft);
  display: grid;
  place-items: center;
  overflow: hidden;
}
.pick-cover img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  transition: transform .5s cubic-bezier(.22,1,.36,1);
}
.pick-card:hover .pick-cover img { transform: scale(1.035); }
.pick-cover-ph {
  font-size: 10.5px; letter-spacing: 2px; color: var(--ink-faint);
}

.pick-body {
  display: flex; flex-direction: column; gap: 8px;
  padding: 16px 18px 18px;
  flex: 1;
}

.pick-meta {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 10.5px; letter-spacing: 1.2px; color: var(--ink-faint);
}
.pick-no { color: var(--pick); font-weight: 700; }

.pick-title {
  font-family: var(--font-display);
  font-size: 20px; line-height: 1.35; font-weight: 700;
  color: var(--ink);
  letter-spacing: -.2px;
}

.pick-sub {
  font-size: 13.5px; line-height: 1.7; color: var(--ink-soft);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}

.pick-stack { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 2px; }
.pick-tech {
  font: 600 10.5px/1 var(--font-mono);
  letter-spacing: .4px;
  padding: 4px 8px;
  color: var(--blue);
  background: var(--blue-soft);
  border: 1px solid rgba(29, 95, 191, .18);
  border-radius: 3px;
}
.pick-tech.more { color: var(--ink-faint); background: transparent; border-color: var(--line); }

.pick-go {
  margin-top: auto; padding-top: 10px;
  font-size: 11px; letter-spacing: 1px;
  color: var(--pick);
  opacity: .75;
  transition: opacity .2s ease, transform .2s ease;
}
.pick-card:hover .pick-go { opacity: 1; transform: translateX(3px); }

.picks-empty {
  margin-top: 30px;
  padding: 40px 24px;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background: var(--card);
  text-align: center;
  color: var(--ink-soft);
}
.picks-empty p + p { margin-top: 8px; font-size: 11.5px; color: var(--ink-faint); }

/* ---------- 详情页 ---------- */
.badge.b-indigo {
  background: var(--pick-soft);
  color: var(--pick);
  border: 1px solid rgba(79, 70, 229, .28);
}

.rec-visit {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 14px;
  padding: 8px 16px;
  font-size: 11.5px; letter-spacing: .8px;
  color: #fff;
  background: var(--pick);
  border-radius: 3px;
  box-shadow: 0 6px 16px -8px rgba(79, 70, 229, .8);
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.rec-visit:hover {
  color: #fff;
  background: #4338ca;
  transform: translateY(-1px);
  box-shadow: 0 10px 22px -8px rgba(79, 70, 229, .85);
}

.rec-cover {
  margin: 22px 0 4px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--paper);
}
.rec-cover img { width: 100%; height: auto; display: block; }

.rec-note {
  margin: 26px 0 8px;
  padding: 16px 18px;
  font-size: 12px;
  color: var(--ink-faint);
  border-left: 3px solid var(--line);
  background: var(--card);
}

/* ---------- 响应式 ---------- */
@media (max-width: 720px) {
  .picks-grid { grid-template-columns: 1fr; gap: 18px; }
  .pick-title { font-size: 18px; }
}