SimpleNav/assets/css/style.css

/* 简航 SimpleNav —— 前台样式
   在 n.yangyq.net「浅灰底 + 白卡片」基础上做了现代化处理：
   圆角更大、阴影分层、悬停微动效、顶部品牌区与胶囊式搜索引擎切换。 */
:root {
  --primary: #2F6BF7;
  --primary-dark: #2456cc;
  --primary-soft: #eef3ff;
  --bg-1: #f4f6fa;
  --bg-2: #e8ecf4;
  --card: #ffffff;
  --text: #22262b;
  --muted: #7b8794;
  --line: #eaedf3;
  --radius-lg: 18px;
  --radius: 12px;
  /* 版心：只推一次 —— 顶栏与正文共用同一个左右内边距，两边算出来严格相等 */
  --wrap: 1140px;
  --gutter: 16px;
  --pad-x: max(var(--gutter), calc((100% - var(--wrap)) / 2));
  --shadow-sm: 0 1px 2px rgba(23, 43, 77, .05), 0 4px 12px rgba(23, 43, 77, .05);
  --shadow: 0 2px 4px rgba(23, 43, 77, .04), 0 10px 30px rgba(23, 43, 77, .08);
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  font-size: 14px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, var(--bg-1) 0%, var(--bg-2) 100%) fixed;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
.container { padding: 0 var(--pad-x); margin: 0 0 40px; }

/* ---------- 顶部品牌区 ---------- */
.hero { text-align: center; padding: 52px 0 22px; }
.hero .logo {
  display: block; width: 60px; height: 60px; margin: 0 auto 14px; border-radius: 18px;
  box-shadow: 0 8px 22px rgba(47, 107, 247, .28);
}
.hero h1 { margin: 0; font-size: 25px; font-weight: 600; letter-spacing: .5px; }
.hero p { margin: 7px 0 0; font-size: 13px; color: var(--muted); }

/* ---------- 搜索 ---------- */
.s-search { position: relative; z-index: 2000; max-width: 760px; margin: 0 auto 6px; }
.search-type { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-bottom: 14px; }
.s-engine {
  display: inline-block; padding: 6px 16px; border-radius: 999px; cursor: pointer;
  background: rgba(255, 255, 255, .72); border: 1px solid rgba(255, 255, 255, .9);
  font-size: 14px; line-height: 20px; color: #4a5568;
  transition: transform .18s, box-shadow .18s, background .18s, color .18s;
  user-select: none;
}
.s-engine span { color: var(--ec, #555); }
.s-engine:hover { background: #fff; transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.s-engine.active {
  background: var(--ec, var(--primary)); border-color: var(--ec, var(--primary));
  box-shadow: 0 6px 16px rgba(47, 107, 247, .26);
}
.s-engine.active span { color: #fff; }

#search-form { position: relative; }
#search-text {
  width: 100%; height: 56px; line-height: 56px; text-indent: 22px; padding-right: 64px;
  font-size: 16px; border: 2px solid transparent; border-radius: 28px; background: #fff;
  color: var(--text); outline: 0; box-shadow: var(--shadow);
  transition: border-color .2s, box-shadow .25s;
}
#search-text::placeholder { color: #a9b3c0; }
#search-text:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 5px rgba(47, 107, 247, .12), var(--shadow);
}
#search button.submit {
  position: absolute; top: 8px; right: 8px; width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border: 0; border-radius: 50%; background: var(--primary); color: #fff;
  cursor: pointer; outline: none; transition: background .2s, transform .2s;
}
#search button.submit:hover { background: var(--primary-dark); transform: scale(1.05); }
#search button.submit:active { transform: scale(.96); }

#word {
  position: absolute; list-style: none; top: 64px; left: 0; width: 100%; margin: 0;
  background: #fff; border-radius: 16px; z-index: 20000; padding: 8px;
  box-shadow: 0 16px 44px rgba(23, 43, 77, .16); display: none;
  max-height: 336px; overflow-y: auto;
}
#word li {
  padding: 0 14px; height: 38px; line-height: 38px; cursor: pointer;
  font-size: 15px; border-radius: 10px; color: #3d4753;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
#word li:hover { background: var(--primary-soft); color: var(--primary); }

/* ---------- 板块卡片 ---------- */
.mylist {
  list-style: none; margin: 18px 0; padding: 16px 20px 14px;
  background: var(--card); border-radius: var(--radius-lg); box-shadow: var(--shadow);
  display: flex; flex-wrap: wrap; transition: box-shadow .25s;
}
.mylist:hover { box-shadow: 0 4px 8px rgba(23, 43, 77, .05), 0 14px 38px rgba(23, 43, 77, .1); }
.mylist > li.title {
  width: 100%; margin: 0 0 12px; padding: 0 0 10px 14px; height: auto;
  font-size: 16px; font-weight: 600; line-height: 22px; color: #1f2733;
  border-bottom: 1px solid var(--line); position: relative;
}
.mylist > li.title::before {
  content: ""; position: absolute; left: 0; top: 3px; width: 4px; height: 17px;
  background: linear-gradient(180deg, var(--primary), #6f9bff);
  border-radius: 2px;
}
.mylist > li.site { margin: 2px; }
.mylist li.site a {
  display: flex; flex-direction: column; align-items: center; width: 104px;
  padding: 12px 6px 10px; border-radius: 14px;
  transition: background .2s, transform .2s;
}
.mylist li.site a:hover { background: linear-gradient(180deg, #f7f9ff, var(--primary-soft)); transform: translateY(-3px); }
.mylist li.site .icon {
  width: 46px; height: 46px; border-radius: 12px; background: #fff;
  object-fit: contain; box-shadow: 0 2px 8px rgba(23, 43, 77, .09);
  transition: transform .2s;
}
.mylist li.site a:hover .icon { transform: scale(1.07); }
.mylist li.site .ico-letter {
  width: 46px; height: 46px; border-radius: 12px; color: #fff; font-size: 20px; font-weight: 600;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 2px 8px rgba(23, 43, 77, .14); transition: transform .2s;
}
.mylist li.site a:hover .ico-letter { transform: scale(1.07); }
.mylist li.site .name {
  width: 100%; margin-top: 8px; text-align: center; font-size: 13px; color: #5b6673;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  transition: color .2s;
}
.mylist li.site a:hover .name { color: var(--primary); }

/* ---------- 合集标签页 ---------- */
.collections { margin: 24px 0 0; }
.collections-title {
  font-size: 16px; font-weight: 600; color: #1f2733;
  padding: 0 0 10px 14px; margin: 0 0 14px; position: relative;
}
.collections-title::before {
  content: ""; position: absolute; left: 0; top: 3px; width: 4px; height: 17px;
  background: linear-gradient(180deg, var(--primary), #6f9bff); border-radius: 2px;
}
.tabs { display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 14px; }
.tabs .tab {
  border: 1px solid rgba(255, 255, 255, .9); background: rgba(255, 255, 255, .72);
  color: #4a5568; cursor: pointer; padding: 8px 18px; border-radius: 999px;
  font-size: 14px; transition: all .18s;
}
.tabs .tab:hover { background: #fff; transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.tabs .tab.active {
  background: var(--primary); border-color: var(--primary); color: #fff;
  box-shadow: 0 6px 16px rgba(47, 107, 247, .26);
}
.tab-panel { display: none; }
.tab-panel.active { display: flex; animation: fadeUp .28s ease both; }
/* 「全部平铺」模式：每个合集各占一块，与上面的网格板块一致（此时没有 .tabs） */
.collections.flat .collections-title { margin-bottom: 16px; }
.collections.flat .mylist { margin: 0 0 16px; }
.collections.flat .mylist:last-child { margin-bottom: 0; }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}

/* ---------- 页脚 ---------- */
.foot {
  text-align: center; color: #97a1ae; font-size: 12px; margin: 30px 0 0;
  padding-top: 18px; border-top: 1px solid rgba(23, 43, 77, .06);
}
.foot a { color: #97a1ae; transition: color .2s; }
.foot a:hover { color: var(--primary); }

/* ---------- 响应式 ---------- */
@media (max-width: 767px) {
  .hero { padding: 28px 0 16px; }
  .hero .logo { width: 52px; height: 52px; border-radius: 15px; }
  .hero h1 { font-size: 21px; }
  .s-search { margin-bottom: 2px; }
  .search-type { gap: 6px; margin-bottom: 10px; }
  .s-engine { padding: 5px 13px; font-size: 13px; }
  #search-text { height: 50px; line-height: 50px; font-size: 15px; text-indent: 18px; }
  #word { top: 58px; }
  .mylist { border-radius: 14px; padding: 12px 12px 10px; }
  .mylist li.site a { width: 25%; padding: 10px 2px 8px; }
  .mylist li.site .icon, .mylist li.site .ico-letter { width: 42px; height: 42px; }
  .mylist li.site .name { font-size: 12px; }
}