/* ============================================================
   HomeBookMarks · 主题系统
   风格(data-style): aurora | linear | minimal
   模式(data-mode):  light | dark   (auto 由 JS 解析为其一)
   ============================================================ */

/* ---------- 变量契约（各风格×模式赋值） ---------- */

/* ===== Aurora · 毛玻璃 ===== */
:root[data-style="aurora"][data-mode="dark"] {
  --bg-base: #0a0b12;
  --text: #eef0f6; --text-dim: #a8afbd; --text-faint: #6a7180;
  --glass-bg: rgba(24,27,38,0.55); --glass-bg-strong: rgba(28,32,45,0.72);
  --glass-border: rgba(255,255,255,0.09); --glass-border-hover: rgba(130,170,255,0.55);
  --glass-highlight: rgba(255,255,255,0.05);
  --accent: #7c9dff; --accent-2: #b78bff;
  --accent-soft: rgba(124,157,255,0.16); --accent-glow: rgba(124,157,255,0.35);
  --shadow: 0 4px 24px rgba(0,0,0,0.35); --shadow-hover: 0 12px 40px rgba(30,40,90,0.45);
  --radius: 16px; --radius-sm: 11px; --blur: 20px;
  --blob-1: #6d5efc; --blob-2: #2ea9ff; --blob-3: #16d1c9; --blob-opacity: 0.55;
  --card-min: 228px; --gap: 13px; --icon-grad: linear-gradient(135deg,#7c9dff,#b78bff);
}
:root[data-style="aurora"][data-mode="light"] {
  --bg-base: #eef1f8;
  --text: #1a1d26; --text-dim: #545b6b; --text-faint: #8b93a4;
  --glass-bg: rgba(255,255,255,0.55); --glass-bg-strong: rgba(255,255,255,0.8);
  --glass-border: rgba(20,30,60,0.10); --glass-border-hover: rgba(90,120,245,0.55);
  --glass-highlight: rgba(255,255,255,0.6);
  --accent: #4c6ef5; --accent-2: #8b5cf6;
  --accent-soft: rgba(76,110,245,0.12); --accent-glow: rgba(76,110,245,0.25);
  --shadow: 0 4px 20px rgba(60,80,160,0.12); --shadow-hover: 0 14px 40px rgba(60,80,180,0.20);
  --radius: 16px; --radius-sm: 11px; --blur: 20px;
  --blob-1: #a78bfa; --blob-2: #60a5fa; --blob-3: #5eead4; --blob-opacity: 0.5;
  --card-min: 228px; --gap: 13px; --icon-grad: linear-gradient(135deg,#4c6ef5,#8b5cf6);
}

/* ===== Linear · 精致暗黑 ===== */
:root[data-style="linear"][data-mode="dark"] {
  --bg-base: #0c0d10;
  --text: #e7e8ec; --text-dim: #9297a2; --text-faint: #5c616c;
  --glass-bg: #16171b; --glass-bg-strong: #1b1d22;
  --glass-border: rgba(255,255,255,0.08); --glass-border-hover: rgba(110,139,255,0.6);
  --glass-highlight: rgba(255,255,255,0.05);
  --accent: #7c8cff; --accent-2: #7c8cff;
  --accent-soft: rgba(124,140,255,0.14); --accent-glow: rgba(124,140,255,0.28);
  --shadow: 0 2px 10px rgba(0,0,0,0.4); --shadow-hover: 0 8px 26px rgba(0,0,0,0.55);
  --radius: 12px; --radius-sm: 9px; --blur: 0px;
  --blob-1: #4f46e5; --blob-2: #2563eb; --blob-3: #1e3a8a; --blob-opacity: 0.14;
  --card-min: 222px; --gap: 12px; --icon-grad: linear-gradient(135deg,#6e8bff,#8b5cf6);
}
:root[data-style="linear"][data-mode="light"] {
  --bg-base: #f7f8fa;
  --text: #1c1e26; --text-dim: #5a606e; --text-faint: #9096a3;
  --glass-bg: #ffffff; --glass-bg-strong: #ffffff;
  --glass-border: rgba(20,25,40,0.10); --glass-border-hover: rgba(80,100,240,0.55);
  --glass-highlight: rgba(20,25,40,0.03);
  --accent: #5b6cf0; --accent-2: #5b6cf0;
  --accent-soft: rgba(91,108,240,0.10); --accent-glow: rgba(91,108,240,0.18);
  --shadow: 0 1px 3px rgba(20,30,60,0.08), 0 4px 14px rgba(20,30,60,0.06);
  --shadow-hover: 0 8px 26px rgba(30,40,90,0.14);
  --radius: 12px; --radius-sm: 9px; --blur: 0px;
  --blob-1: #c7d2fe; --blob-2: #bfdbfe; --blob-3: #e0e7ff; --blob-opacity: 0.5;
  --card-min: 222px; --gap: 12px; --icon-grad: linear-gradient(135deg,#5b6cf0,#8b5cf6);
}

/* ===== Minimal · 极简杂志 ===== */
:root[data-style="minimal"][data-mode="dark"] {
  --bg-base: #0f0f10;
  --text: #ededef; --text-dim: #8f9096; --text-faint: #55565c;
  --glass-bg: transparent; --glass-bg-strong: #17171a;
  --glass-border: rgba(255,255,255,0.09); --glass-border-hover: rgba(255,255,255,0.28);
  --glass-highlight: rgba(255,255,255,0.04);
  --accent: #d4d4d8; --accent-2: #a1a1aa;
  --accent-soft: rgba(255,255,255,0.07); --accent-glow: rgba(0,0,0,0);
  --shadow: none; --shadow-hover: none;
  --radius: 10px; --radius-sm: 8px; --blur: 0px;
  --blob-1: #000; --blob-2: #000; --blob-3: #000; --blob-opacity: 0;
  --card-min: 244px; --gap: 16px; --icon-grad: linear-gradient(135deg,#3f3f46,#27272a);
}
:root[data-style="minimal"][data-mode="light"] {
  --bg-base: #ffffff;
  --text: #18181b; --text-dim: #6b7280; --text-faint: #a1a1aa;
  --glass-bg: transparent; --glass-bg-strong: #ffffff;
  --glass-border: #ececee; --glass-border-hover: #18181b;
  --glass-highlight: rgba(0,0,0,0.02);
  --accent: #18181b; --accent-2: #52525b;
  --accent-soft: rgba(0,0,0,0.05); --accent-glow: rgba(0,0,0,0);
  --shadow: none; --shadow-hover: none;
  --radius: 10px; --radius-sm: 8px; --blur: 0px;
  --blob-1: #fff; --blob-2: #fff; --blob-3: #fff; --blob-opacity: 0;
  --card-min: 244px; --gap: 16px; --icon-grad: linear-gradient(135deg,#e4e4e7,#d4d4d8);
}
/* Minimal 的首字母块用深/浅底而非彩色 */
:root[data-style="minimal"] .card-icon { color: var(--text-dim); }

/* ---------- 基础 ---------- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
    "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg-base);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
  overflow-x: hidden;
  transition: background 0.3s ease, color 0.3s ease;
}
.lucide, [data-lucide] { width: 1em; height: 1em; stroke-width: 2; vertical-align: -0.14em; }

/* ---------- 极光背景 ---------- */
.aurora { position: fixed; inset: 0; z-index: -1; overflow: hidden; filter: saturate(1.1); }
.blob {
  position: absolute; border-radius: 50%; filter: blur(90px);
  opacity: var(--blob-opacity); will-change: transform;
  transition: opacity 0.4s ease, background 0.4s ease;
}
.blob-1 { width: 46vw; height: 46vw; background: var(--blob-1); top: -12vw; left: -8vw; animation: drift1 22s ease-in-out infinite alternate; }
.blob-2 { width: 40vw; height: 40vw; background: var(--blob-2); top: 20vh; right: -10vw; animation: drift2 26s ease-in-out infinite alternate; }
.blob-3 { width: 38vw; height: 38vw; background: var(--blob-3); bottom: -14vw; left: 30vw; animation: drift3 30s ease-in-out infinite alternate; }
@keyframes drift1 { to { transform: translate(8vw,10vh) scale(1.15); } }
@keyframes drift2 { to { transform: translate(-10vw,6vh) scale(1.1); } }
@keyframes drift3 { to { transform: translate(6vw,-8vh) scale(1.2); } }
@media (prefers-reduced-motion: reduce) { .blob { animation: none; } }

/* ---------- 布局 ---------- */
.layout { display: flex; min-height: 100vh; }

/* ---------- 侧栏 ---------- */
.sidebar {
  width: 250px; flex-shrink: 0; position: sticky; top: 0; height: 100vh;
  padding: 16px 14px; display: flex; flex-direction: column; gap: 8px;
}
.sidebar-head { padding: 8px 8px 4px; }
.brand { display: flex; align-items: center; gap: 11px; }
.brand-mark {
  width: 34px; height: 34px; display: grid; place-items: center;
  border-radius: 10px; font-size: 18px; color: #fff;
  background: var(--icon-grad); box-shadow: 0 4px 14px var(--accent-glow);
}
:root[data-style="minimal"] .brand-mark { color: var(--bg-base); }
.site-title { font-size: 17px; font-weight: 700; letter-spacing: 0.2px; }

.cat-nav {
  flex: 1; overflow-y: auto; padding: 6px 2px;
  display: flex; flex-direction: column; gap: 3px;
  scrollbar-width: thin; scrollbar-color: var(--glass-border) transparent;
}
.cat-nav::-webkit-scrollbar { width: 6px; }
.cat-nav::-webkit-scrollbar-thumb { background: var(--glass-border); border-radius: 3px; }

.cat-item {
  display: flex; align-items: center; gap: 11px; width: 100%;
  padding: 10px 12px; border: 1px solid transparent; background: transparent;
  color: var(--text-dim); font-size: 14px; border-radius: var(--radius-sm);
  cursor: pointer; text-align: left; transition: all 0.18s ease;
}
.cat-item:hover { background: var(--glass-bg-strong); color: var(--text); border-color: var(--glass-border); }
.cat-item.active {
  background: linear-gradient(135deg, var(--accent-soft), transparent);
  color: var(--text); border-color: var(--glass-border-hover);
  box-shadow: inset 0 0 0 1px var(--glass-highlight);
}
.cat-item.active .cat-ico { color: var(--accent); }
.cat-ico { font-size: 17px; width: 20px; display: grid; place-items: center; color: var(--text-faint); transition: color 0.18s; }
.cat-item:hover .cat-ico { color: var(--accent); }
.cat-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cat-count {
  font-size: 11.5px; font-variant-numeric: tabular-nums; color: var(--text-faint);
  background: var(--glass-highlight); border: 1px solid var(--glass-border);
  padding: 1px 8px; border-radius: 20px;
}

.sidebar-foot { padding: 4px 2px 2px; display: flex; gap: 8px; }
.foot-btn {
  flex: 1; min-width: 0;
  display: flex; align-items: center; justify-content: center; gap: 7px;
  padding: 10px 8px; background: var(--glass-bg-strong);
  border: 1px solid var(--glass-border);
  color: var(--text-dim); border-radius: var(--radius-sm);
  cursor: pointer; font-size: 12.5px; transition: all 0.18s;
}
.foot-btn:hover { color: var(--text); border-color: var(--glass-border-hover); }
.foot-btn span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.foot-ico { font-size: 15px; flex-shrink: 0; }

/* ---------- 主区域 ---------- */
.main { flex: 1; min-width: 0; display: flex; flex-direction: column; padding: 0 26px; }
.toolbar { position: sticky; top: 0; z-index: 5; padding: 18px 0 0; }
.search-wrap { position: relative; display: flex; align-items: center; max-width: 640px; }
.search-icon { position: absolute; left: 15px; font-size: 16px; color: var(--text-faint); pointer-events: none; }
#search {
  width: 100%; padding: 13px 46px 13px 42px; font-size: 14px; color: var(--text);
  background: var(--glass-bg-strong); border: 1px solid var(--glass-border);
  backdrop-filter: blur(var(--blur)); -webkit-backdrop-filter: blur(var(--blur));
  border-radius: var(--radius); outline: none; box-shadow: var(--shadow);
  transition: border-color 0.18s, box-shadow 0.18s;
}
#search::placeholder { color: var(--text-faint); }
#search:focus { border-color: var(--glass-border-hover); box-shadow: 0 0 0 4px var(--accent-soft), var(--shadow); }
#search::-webkit-search-cancel-button { cursor: pointer; }
.search-kbd {
  position: absolute; right: 13px; font-size: 12px; color: var(--text-faint);
  background: var(--glass-highlight); border: 1px solid var(--glass-border);
  border-radius: 6px; padding: 2px 8px;
}
.crumb { padding: 16px 4px 4px; font-size: 13px; color: var(--text-dim); display: flex; align-items: center; gap: 8px; font-weight: 500; }
.crumb .crumb-ico { font-size: 15px; color: var(--accent); }

/* ---------- 内容 / 卡片 ---------- */
.content { padding: 12px 0 40px; }
.cat-block { margin-bottom: 30px; }
.cat-block-title { font-size: 13px; font-weight: 600; color: var(--text-dim); margin: 0 4px 14px; display: flex; align-items: center; gap: 10px; }
.cat-block-title .line { flex: 1; height: 1px; background: var(--glass-border); }
.cat-block-title .cnt { color: var(--text-faint); font-weight: 500; }

.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(var(--card-min), 1fr)); gap: var(--gap); }
.card {
  position: relative; display: flex; align-items: center; gap: 13px;
  padding: 14px 15px; background: var(--glass-bg); border: 1px solid var(--glass-border);
  backdrop-filter: blur(var(--blur)); -webkit-backdrop-filter: blur(var(--blur));
  border-radius: var(--radius); box-shadow: var(--shadow);
  text-decoration: none; color: inherit; overflow: hidden;
  transition: transform 0.16s ease, box-shadow 0.2s, border-color 0.2s, background 0.2s;
}
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
  background: linear-gradient(140deg, var(--glass-highlight), transparent 40%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); border-color: var(--glass-border-hover); background: var(--glass-bg-strong); }
/* 极简风：去玻璃高光描边 */
:root[data-style="minimal"] .card::before { display: none; }
:root[data-style="minimal"] .card:hover { transform: none; }

.card-icon {
  width: 38px; height: 38px; flex-shrink: 0; border-radius: 10px; object-fit: cover;
  display: grid; place-items: center; font-weight: 700; color: #fff; font-size: 16px;
  overflow: hidden; background: var(--icon-grad); box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}
:root[data-style="minimal"] .card-icon { box-shadow: none; }
.card-icon img { width: 100%; height: 100%; object-fit: cover; }
.card-body { min-width: 0; flex: 1; }
.card-title { font-size: 14px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card-desc { font-size: 12px; color: var(--text-dim); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin-top: 3px; }
.card-arrow { position: absolute; right: 12px; top: 12px; font-size: 14px; color: var(--text-faint); opacity: 0; transform: translate(-4px,4px); transition: all 0.2s; }
.card:hover .card-arrow { opacity: 1; transform: translate(0,0); color: var(--accent); }
.hl { background: var(--accent-soft); color: var(--accent); border-radius: 3px; padding: 0 2px; font-weight: 600; }

.empty { text-align: center; color: var(--text-faint); padding: 70px 20px; font-size: 14px; }
.empty .big { font-size: 34px; display: block; margin-bottom: 12px; opacity: 0.6; }
.foot-note { padding: 8px 4px 28px; color: var(--text-faint); font-size: 12px; text-align: center; }

/* ---------- 移动端 ---------- */
.mobile-bar { display: none; }
.scrim { display: none; }
.icon-btn { background: transparent; border: none; color: var(--text); font-size: 20px; cursor: pointer; padding: 8px 10px; border-radius: 10px; display: grid; place-items: center; }
.icon-btn:hover { background: var(--glass-bg-strong); }

@media (max-width: 760px) {
  .mobile-bar {
    display: flex; align-items: center; justify-content: space-between; padding: 10px 14px;
    background: var(--glass-bg-strong); backdrop-filter: blur(var(--blur)); -webkit-backdrop-filter: blur(var(--blur));
    border-bottom: 1px solid var(--glass-border); position: sticky; top: 0; z-index: 20;
  }
  .mobile-title { font-weight: 700; }
  .sidebar {
    position: fixed; top: 0; left: 0; height: 100vh; z-index: 30;
    background: var(--glass-bg-strong); backdrop-filter: blur(28px); -webkit-backdrop-filter: blur(28px);
    border-right: 1px solid var(--glass-border); transform: translateX(-100%);
    transition: transform 0.24s ease; box-shadow: var(--shadow-hover);
  }
  :root[data-style="minimal"] .sidebar { background: var(--bg-base); }
  .sidebar.open { transform: translateX(0); }
  .scrim { display: block; position: fixed; inset: 0; background: rgba(0,0,0,0.45); z-index: 25; backdrop-filter: blur(2px); }
  .scrim[hidden] { display: none; }
  .main { padding: 0 14px; }
  .search-kbd { display: none; }
  .card-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
}