/* app.css - NovelHub 亮色主题前端样式
   动画特性：错峰进入 / 按压波纹 / 骨架屏闪光 / 滑动Tab / 淡入淡出 /
             滚动联动 / 弹簧拖拽 / 柱状图生长 / 推进滑动 / 状态切换
*/

/* ===== 全局 ===== */
:root {
  --bg: #f4f7fb;
  --bg-soft: #eef3fa;
  --card: #ffffff;
  --card-2: #fbfcfe;
  --text: #1f2937;
  --text-soft: #5b6473;
  --text-mute: #9aa3b2;
  --primary: #4a7bff;
  --primary-soft: #e8efff;
  --primary-deep: #2f5ce0;
  --accent: #ff7a59;
  --green: #2bb673;
  --amber: #f5a623;
  --red: #ef4d5e;
  --border: #e6ecf3;
  --shadow: 0 6px 22px rgba(40, 60, 110, 0.08);
  --shadow-lg: 0 14px 40px rgba(40, 60, 110, 0.14);
  --radius: 16px;
  --radius-sm: 10px;
  --trans: cubic-bezier(0.22, 1, 0.36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  height: 100%;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  /* 全局禁止蓝色选中矩形 */
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
}
::selection { background: var(--primary-soft); color: var(--primary-deep); }
:focus { outline: none; }

button, input, select { font-family: inherit; }

/* ===== 顶栏 ===== */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: 1180px; margin: 0 auto; padding: 14px 20px;
  display: flex; align-items: center; gap: 18px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--text); }
.brand .logo { width: 30px; height: 30px; }
.brand span { background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.topbar nav { margin-left: auto; display: flex; gap: 6px; }
.topbar nav a {
  text-decoration: none; color: var(--text-soft); font-size: 14px; font-weight: 500;
  padding: 8px 14px; border-radius: 20px; transition: all .25s var(--trans);
}
.topbar nav a:hover { color: var(--primary); background: var(--primary-soft); }
.topbar nav a.active { color: #fff; background: linear-gradient(135deg, var(--primary), var(--primary-deep)); box-shadow: 0 4px 12px rgba(74,123,255,.35); }

/* ===== 容器 ===== */
.container { max-width: 1180px; margin: 0 auto; padding: 26px 20px 80px; }

/* ===== 搜索区 ===== */
.hero { text-align: center; padding: 40px 0 28px; }
.hero h1 { font-size: clamp(24px, 4vw, 38px); font-weight: 800; letter-spacing: -.5px; }
.hero h1 .grad { background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p { color: var(--text-soft); margin-top: 10px; font-size: 15px; }

.search-box {
  margin: 22px auto 0; max-width: 720px;
  background: var(--card); border-radius: 999px; padding: 6px;
  display: flex; align-items: center; gap: 6px;
  box-shadow: var(--shadow); border: 1px solid var(--border);
  transition: box-shadow .3s var(--trans), transform .3s var(--trans);
}
.search-box:focus-within { box-shadow: var(--shadow-lg); transform: translateY(-1px); }
.search-box select {
  border: none; background: var(--bg-soft); color: var(--text);
  border-radius: 999px; padding: 10px 14px; font-size: 14px; cursor: pointer; font-weight: 600;
}
.search-box input {
  flex: 1; border: none; background: transparent; padding: 12px 10px; font-size: 15px; color: var(--text);
}
.search-box input::placeholder { color: var(--text-mute); }
.search-box button {
  border: none; cursor: pointer; background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  color: #fff; border-radius: 999px; padding: 11px 22px; font-size: 14px; font-weight: 600;
  display: flex; align-items: center; gap: 6px;
  transition: transform .2s var(--trans), box-shadow .2s var(--trans);
  box-shadow: 0 6px 16px rgba(74,123,255,.35);
}
.search-box button:hover { transform: scale(1.03); }
.search-box button:active { transform: scale(.97); }

/* ===== Tab 滑动 ===== */
.tabs { position: relative; display: flex; gap: 4px; background: var(--card); border-radius: 999px; padding: 4px; box-shadow: var(--shadow); margin: 0 auto; max-width: fit-content; }
.tab {
  position: relative; z-index: 2; border: none; background: transparent; cursor: pointer;
  padding: 10px 22px; font-size: 14px; font-weight: 600; color: var(--text-soft);
  border-radius: 999px; transition: color .3s var(--trans);
}
.tab.active { color: #fff; }
.tab-indicator {
  position: absolute; z-index: 1; top: 4px; bottom: 4px;
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  border-radius: 999px; transition: left .38s var(--trans), width .38s var(--trans);
  box-shadow: 0 4px 12px rgba(74,123,255,.35);
}

/* ===== 卡片网格 ===== */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 18px; margin-top: 24px; }
.book-card {
  background: var(--card); border-radius: var(--radius); padding: 16px;
  box-shadow: var(--shadow); border: 1px solid var(--border);
  display: flex; gap: 14px; cursor: pointer; position: relative; overflow: hidden;
  opacity: 0; transform: translateY(18px);
  transition: transform .35s var(--trans), box-shadow .35s var(--trans), opacity .5s var(--trans);
}
/* 错峰进入 */
.book-card.in { opacity: 1; transform: translateY(0); }
.book-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.book-card .thumb {
  width: 64px; height: 86px; border-radius: 8px; flex-shrink: 0;
  background: var(--bg-soft) center/cover no-repeat; box-shadow: 0 4px 10px rgba(0,0,0,.1);
}
.book-card .info { flex: 1; min-width: 0; }
.book-card .title { font-size: 15px; font-weight: 700; color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.book-card .author { font-size: 12px; color: var(--primary); margin: 4px 0 6px; }
.book-card .desc { font-size: 12px; color: var(--text-mute); line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.book-card .tags { margin-top: 8px; display: flex; gap: 6px; flex-wrap: wrap; }
.book-card .tag { font-size: 11px; padding: 2px 8px; background: var(--primary-soft); color: var(--primary-deep); border-radius: 6px; }
.book-card .src-badge { position: absolute; top: 10px; right: 10px; font-size: 10px; padding: 2px 8px; border-radius: 6px; color: #fff; }
.src-fanqie { background: #ff5c5c; }
.src-qidian { background: #4a7bff; }

/* ===== 骨架屏 ===== */
.skeleton { background: var(--card); border-radius: var(--radius); padding: 16px; display: flex; gap: 14px; border: 1px solid var(--border); }
.skeleton .sk-thumb { width: 64px; height: 86px; border-radius: 8px; background: linear-gradient(90deg, #eef2f7 25%, #f7faff 50%, #eef2f7 75%); background-size: 200% 100%; animation: shimmer 1.4s infinite; }
.skeleton .sk-lines { flex: 1; display: flex; flex-direction: column; gap: 8px; }
.skeleton .sk-line { height: 12px; border-radius: 6px; background: linear-gradient(90deg, #eef2f7 25%, #f7faff 50%, #eef2f7 75%); background-size: 200% 100%; animation: shimmer 1.4s infinite; }
.skeleton .sk-line.w70 { width: 70%; } .skeleton .sk-line.w40 { width: 40%; } .skeleton .sk-line.w90 { width: 90%; }
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* ===== 详情面板（淡入淡出 + 弹簧拖拽） ===== */
.overlay { position: fixed; inset: 0; background: rgba(20,30,50,.45); backdrop-filter: blur(4px); z-index: 100; opacity: 0; pointer-events: none; transition: opacity .3s var(--trans); }
.overlay.show { opacity: 1; pointer-events: auto; }
.panel {
  position: fixed; top: 0; right: 0; height: 100%; width: min(440px, 92vw);
  background: var(--card); z-index: 101; transform: translateX(100%);
  transition: transform .42s var(--trans); box-shadow: var(--shadow-lg);
  display: flex; flex-direction: column;
}
.panel.show { transform: translateX(0); }
.panel.dragging { transition: none; }
.panel-header { padding: 18px 20px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 10px; cursor: grab; }
.panel-header:active { cursor: grabbing; }
.panel-header .grip { color: var(--text-mute); }
.panel-header h3 { font-size: 16px; flex: 1; }
.panel-header .close { border: none; background: var(--bg-soft); width: 32px; height: 32px; border-radius: 50%; cursor: pointer; color: var(--text-soft); display: flex; align-items: center; justify-content: center; transition: all .2s; }
.panel-header .close:hover { background: var(--red); color: #fff; transform: rotate(90deg); }
.panel-body { flex: 1; overflow-y: auto; padding: 20px; }
.detail-cover { width: 110px; height: 150px; border-radius: 10px; box-shadow: 0 8px 20px rgba(0,0,0,.15); margin: 0 auto 14px; background-size: cover; background-position: center; }
.detail-title { text-align: center; font-size: 20px; font-weight: 800; }
.detail-author { text-align: center; color: var(--primary); font-size: 14px; margin-top: 4px; }
.detail-meta { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; margin: 12px 0; }
.detail-meta .m { font-size: 12px; padding: 4px 10px; background: var(--bg-soft); border-radius: 8px; color: var(--text-soft); }
.detail-abs { font-size: 13px; color: var(--text-soft); line-height: 1.7; background: var(--card-2); padding: 12px; border-radius: 10px; border: 1px solid var(--border); margin-top: 14px; }
.detail-actions { display: flex; gap: 10px; margin-top: 18px; }
.btn { border: none; cursor: pointer; border-radius: 10px; padding: 11px 16px; font-size: 14px; font-weight: 600; display: flex; align-items: center; justify-content: center; gap: 6px; transition: all .2s var(--trans); }
.btn-primary { flex: 1; background: linear-gradient(135deg, var(--primary), var(--primary-deep)); color: #fff; box-shadow: 0 6px 16px rgba(74,123,255,.3); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 22px rgba(74,123,255,.4); }
.btn-ghost { background: var(--bg-soft); color: var(--text); }
.btn-ghost:hover { background: var(--primary-soft); color: var(--primary-deep); }

/* 章节列表 */
.chapter-list { margin-top: 18px; }
.chapter-list .ch-title { font-size: 14px; font-weight: 700; margin-bottom: 10px; display: flex; align-items: center; gap: 6px; }
.chapter-item { padding: 10px 12px; border-radius: 8px; font-size: 13px; color: var(--text-soft); cursor: pointer; transition: all .2s; display: flex; gap: 8px; align-items: center; }
.chapter-item:hover { background: var(--primary-soft); color: var(--primary-deep); }
.chapter-item .vol { font-size: 10px; color: var(--text-mute); }

/* 阅读器 */
.reader { position: fixed; inset: 0; background: #fff; z-index: 200; transform: translateX(100%); transition: transform .4s var(--trans); display: flex; flex-direction: column; }
.reader.show { transform: translateX(0); }
.reader-header { padding: 14px 18px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 10px; background: var(--card); }
.reader-header h3 { font-size: 15px; flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.reader-body { flex: 1; overflow-y: auto; padding: 24px 22px; max-width: 820px; margin: 0 auto; width: 100%; }
.reader-body p { font-size: 16px; line-height: 2; color: var(--text); margin-bottom: 12px; text-indent: 2em; }
.reader-nav { padding: 14px 18px; border-top: 1px solid var(--border); display: flex; gap: 10px; background: var(--card); }

/* ===== 状态切换按钮 ===== */
.state-btn { position: relative; overflow: hidden; }
.state-btn .state { transition: opacity .3s var(--trans), transform .3s var(--trans); }
.state-btn.done .state-default { opacity: 0; transform: translateY(-10px); position: absolute; }
.state-btn .state-done { opacity: 0; transform: translateY(10px); position: absolute; }
.state-btn.done .state-done { opacity: 1; transform: translateY(0); position: static; }

/* ===== 加载动画 ===== */
.loader { display: inline-block; width: 18px; height: 18px; border: 2px solid rgba(255,255,255,.4); border-top-color: #fff; border-radius: 50%; animation: spin .7s linear infinite; }
.loader.dark { border: 2px solid var(--primary-soft); border-top-color: var(--primary); }
@keyframes spin { to { transform: rotate(360deg); } }

/* SVG 加载动画 */
.svg-loader { width: 48px; height: 48px; }
.empty { text-align: center; padding: 60px 20px; color: var(--text-mute); }
.empty svg { width: 64px; height: 64px; margin-bottom: 14px; opacity: .5; }

/* ===== 监控页 ===== */
.stats-hero { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-top: 10px; }
.stat-card { background: var(--card); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); border: 1px solid var(--border); position: relative; overflow: hidden; opacity: 0; transform: translateY(16px); transition: all .5s var(--trans); }
.stat-card.in { opacity: 1; transform: translateY(0); }
.stat-card .icon { width: 40px; height: 40px; border-radius: 12px; display: flex; align-items: center; justify-content: center; margin-bottom: 12px; }
.stat-card .label { font-size: 13px; color: var(--text-mute); }
.stat-card .value { font-size: 28px; font-weight: 800; margin-top: 4px; font-variant-numeric: tabular-nums; }
.stat-card .sub { font-size: 12px; color: var(--text-soft); margin-top: 4px; }
.ic-blue { background: var(--primary-soft); color: var(--primary); }
.ic-green { background: #e6f7ef; color: var(--green); }
.ic-amber { background: #fff5e6; color: var(--amber); }
.ic-red { background: #fdecee; color: var(--red); }
.ic-purple { background: #f0ecff; color: #7c5cff; }

.section-title { font-size: 18px; font-weight: 700; margin: 30px 0 16px; display: flex; align-items: center; gap: 8px; }
.section-title .bar { width: 4px; height: 18px; background: linear-gradient(180deg, var(--primary), var(--accent)); border-radius: 2px; }

/* 柱状图 */
.chart-wrap { background: var(--card); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); border: 1px solid var(--border); }
.bar-chart { display: flex; align-items: flex-end; gap: 10px; height: 200px; padding-top: 20px; overflow-x: auto; }
.bar-col { flex: 1; min-width: 60px; display: flex; flex-direction: column; align-items: center; gap: 8px; }
.bar { width: 100%; max-width: 48px; background: linear-gradient(180deg, var(--primary), var(--primary-deep)); border-radius: 8px 8px 0 0; height: 0; transition: height 1s var(--trans); position: relative; }
.bar .val { position: absolute; top: -22px; left: 50%; transform: translateX(-50%) translateY(8px); font-size: 12px; font-weight: 700; color: var(--text); opacity: 0; transition: all .8s var(--trans) .3s; white-space: nowrap; }
.bar.grow .val { opacity: 1; transform: translateX(-50%) translateY(0); }
.bar.alt { background: linear-gradient(180deg, var(--accent), #ff5a37); }
.bar-label { font-size: 12px; color: var(--text-soft); text-align: center; }

/* 路由表 */
.route-table { background: var(--card); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--border); }
.route-row { display: grid; grid-template-columns: 1.4fr .8fr .8fr .8fr 1fr; padding: 14px 18px; border-bottom: 1px solid var(--border); font-size: 13px; align-items: center; transition: background .2s; }
.route-row:hover { background: var(--bg-soft); }
.route-row.head { background: var(--bg-soft); font-weight: 700; color: var(--text-soft); font-size: 12px; }
.route-row:last-child { border-bottom: none; }
.route-name { font-family: monospace; color: var(--primary-deep); font-weight: 600; }
.pill { display: inline-block; padding: 2px 10px; border-radius: 20px; font-size: 11px; font-weight: 600; }
.pill.green { background: #e6f7ef; color: var(--green); }
.pill.red { background: #fdecee; color: var(--red); }

/* 运行时进度条 */
.gauge { background: var(--bg-soft); border-radius: 999px; height: 8px; overflow: hidden; margin-top: 6px; }
.gauge .fill { height: 100%; border-radius: 999px; transition: width .8s var(--trans); }
.gauge .fill.cpu { background: linear-gradient(90deg, var(--green), var(--amber)); }
.gauge .fill.mem { background: linear-gradient(90deg, var(--primary), var(--accent)); }

/* 按压波纹 */
.ripple { position: relative; overflow: hidden; }
.ripple .rip { position: absolute; border-radius: 50%; background: rgba(255,255,255,.5); transform: scale(0); animation: ripple .6s var(--trans); pointer-events: none; }
@keyframes ripple { to { transform: scale(3); opacity: 0; } }

/* 响应式 */
@media (max-width: 640px) {
  .topbar-inner { padding: 12px 14px; gap: 10px; }
  .container { padding: 18px 14px 60px; }
  .grid { grid-template-columns: 1fr; }
  .route-row { grid-template-columns: 1fr 1fr; font-size: 12px; gap: 4px; }
  .route-row .col-hide { display: none; }
  .hero { padding: 24px 0 18px; }
}

/* 推进滑动：阅读器切换章节时内容滑入 */
.reader-body.slide-in { animation: slideIn .35s var(--trans); }
@keyframes slideIn { from { opacity: 0; transform: translateX(30px); } to { opacity: 1; transform: translateX(0); } }
.reader-body.slide-out { animation: slideOut .25s var(--trans); }
@keyframes slideOut { to { opacity: 0; transform: translateX(-30px); } }

/* 淡入淡出交叉 */
.fade-cross { animation: fadeIn .3s var(--trans); }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* 分页 */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 26px; }
.page-btn { border: 1px solid var(--border); background: var(--card); border-radius: 10px; padding: 8px 14px; cursor: pointer; font-size: 13px; color: var(--text-soft); transition: all .2s; }
.page-btn:hover:not(:disabled) { border-color: var(--primary); color: var(--primary); }
.page-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.page-btn:disabled { opacity: .4; cursor: not-allowed; }

/* 下载选项 */
.dl-options { display: flex; gap: 10px; margin-top: 14px; }
.dl-opt { flex: 1; border: 2px solid var(--border); border-radius: 12px; padding: 14px; cursor: pointer; text-align: center; transition: all .2s; background: var(--card); }
.dl-opt:hover { border-color: var(--primary); }
.dl-opt.sel { border-color: var(--primary); background: var(--primary-soft); }
.dl-opt .fmt { font-weight: 700; font-size: 16px; color: var(--primary-deep); }
.dl-opt .desc { font-size: 11px; color: var(--text-mute); margin-top: 4px; }

/* Toast */
.toast { position: fixed; bottom: 30px; left: 50%; transform: translateX(-50%) translateY(20px); background: var(--text); color: #fff; padding: 12px 22px; border-radius: 999px; font-size: 14px; z-index: 999; opacity: 0; transition: all .3s var(--trans); box-shadow: var(--shadow-lg); }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.err { background: var(--red); }