/* ============================================
   深夜机场 - Design Tokens + 响应式
   暗色优先 · 自适应手机/平板/电脑
   ============================================ */

/* === 1. Design Tokens === */
:root {
  /* 色阶 */
  --bg: #0a0a0a;
  --surface: #171717;
  --surface-2: #262626;
  --text: #e5e5e5;
  --text-2: #a3a3a3;
  --muted: #737373;
  --border: #404040;
  --accent: #e8406a;
  --accent-2: #c870d0;
  --free-bg: rgba(74, 222, 128, 0.12);
  --free-text: #4ade80;
  --lock: #e8406a;

  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  /* 阴影 */
  --shadow-sm: 0 1px 3px rgba(0,0,0,.35), 0 1px 2px rgba(0,0,0,.35);
  --shadow-md: 0 4px 6px rgba(0,0,0,.4), 0 2px 4px rgba(0,0,0,.3);
  --shadow-lg: 0 10px 15px rgba(0,0,0,.45), 0 4px 6px rgba(0,0,0,.35);

  /* 动效 */
  --motion: 180ms ease-out;

  /* 容器 */
  --container-max: 1160px;
  --container-px: 16px;
}

/* 浅色模式 */
[data-theme="light"] {
  --bg: #f8f8f8;
  --surface: #ffffff;
  --surface-2: #f2f2f2;
  --text: #1a1a1a;
  --text-2: #525252;
  --muted: #737373;
  --border: #e5e5e5;
  --accent: #c0392b;
  --accent-2: #d4875e;
  --free-bg: rgba(39, 174, 96, 0.1);
  --free-text: #27ae60;
  --lock: #c0392b;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 6px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 15px rgba(0,0,0,.06);
}

/* === 2. 基础 Reset === */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{font-size:16px;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent;width:100%;overflow-x:hidden}
body{
  font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);line-height:1.7;
  width:100%;min-height:100vh;overflow-x:hidden;
  -webkit-overflow-scrolling:touch;touch-action:pan-y;
  transition:background var(--motion),color var(--motion);
}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto}
button{font-family:inherit;cursor:pointer;border:none;outline:none;transition:opacity var(--motion)}

/* === 3. 容器 === */
.container{
  width:100%;max-width:var(--container-max);
  margin:0 auto;padding:0 var(--container-px);
}
@media(min-width:768px){:root{--container-px:24px}}
@media(min-width:1100px){:root{--container-px:32px}}

/* === 4. Header === */
.site-header{
  position:sticky;top:0;z-index:50;
  background:var(--surface);border-bottom:1px solid var(--border);
}
.site-header .container{
  height:48px;display:flex;align-items:center;gap:12px;padding:0 var(--container-px);
}
.site-logo{font-size:1.1rem;font-weight:700;flex-shrink:0;color:var(--accent)}
#userBar{flex-shrink:0;font-size:.65rem;white-space:nowrap}
.site-nav{display:none;align-items:center;gap:4px}
@media(min-width:768px){.site-nav{display:flex}}
.nav-link{
  padding:6px 14px;border-radius:var(--radius-sm);font-size:.82rem;
  color:var(--text-2);transition:all var(--motion);
}
.nav-link:hover,.nav-link.active{color:var(--text);background:var(--surface-2)}

/* === 5. 用户栏 === */
.user-bar{padding:8px 0;display:flex;align-items:center;justify-content:flex-end;gap:8px;font-size:.76rem}
.user-bar .login-btn{
  padding:6px 16px;border:1px solid var(--border);border-radius:20px;
  font-size:.74rem;color:var(--text-2);background:var(--surface);
  transition:all var(--motion);
}
.user-bar .login-btn:hover{border-color:var(--accent);color:var(--accent)}
.vip-badge{padding:2px 10px;border-radius:10px;font-size:.62rem;font-weight:600}
.v-free{background:var(--border);color:var(--muted)}.v-all{background:linear-gradient(135deg,#f093fb,#f5576c);color:#fff}

/* === 6. 标签栏 === */
.tab-bar{display:flex;gap:0;border-bottom:1px solid var(--border);margin-bottom:12px}
.tab-bar button{
  flex:1;padding:12px 0;background:none;font-size:.82rem;
  color:var(--text-2);border-bottom:2px solid transparent;
  transition:all var(--motion);
}
.tab-bar button.active{color:var(--accent);border-bottom-color:var(--accent);font-weight:600}

/* === 7. 搜索 === */
/* 旧搜索框样式（index不在header内时用） */
.search-wrap{padding:0}
.search-wrap input{width:100%;padding:10px 16px;border:1px solid var(--border);border-radius:22px;font-size:.8rem;background:var(--surface);color:var(--text);outline:none}
.search-wrap input:focus{border-color:var(--accent)}
.search-hint{text-align:center;padding:2px 0 0;font-size:.66rem;color:var(--accent)}

/* === 8. 搜索热词 === */
.trending{
  display:flex !important;flex-direction:row !important;flex-wrap:nowrap !important;
  gap:6px;padding:4px 0 10px;overflow-x:auto;
  scrollbar-width:none;-webkit-overflow-scrolling:touch;
}
.trending::-webkit-scrollbar{display:none}
.trending a{
  flex-shrink:0 !important;display:inline-block !important;
  padding:3px 10px;border-radius:12px;font-size:.66rem;
  background:var(--surface-2);color:var(--text-2);white-space:nowrap;
  transition:all var(--motion);
}
.trending a:hover{background:var(--accent);color:#fff}

/* === 9. 分类标签（页面内） === */
.cat-scroll{
  display:flex;gap:6px;overflow-x:auto;scrollbar-width:none;padding:0 0 12px;
}
.cat-scroll::-webkit-scrollbar{display:none}
.cat-tag{
  flex-shrink:0;padding:5px 14px;border-radius:18px;font-size:.7rem;
  background:var(--surface);border:1px solid var(--border);color:var(--text-2);
  white-space:nowrap;cursor:pointer;transition:all var(--motion);
}
.cat-tag.active{background:var(--accent);border-color:var(--accent);color:#fff}

/* === 9.5 8大分类快捷筛选栏 === */
.cat-quick-bar{
  display:grid;grid-template-columns:repeat(3,1fr);gap:6px;
  padding:0 0 10px;
}
@media(min-width:420px){
  .cat-quick-bar{grid-template-columns:repeat(4,1fr)}
}
@media(min-width:640px){
  .cat-quick-bar{grid-template-columns:repeat(5,1fr)}
}
.cat-quick-btn{
  padding:7px 4px;border-radius:16px;text-align:center;
  font-size:.62rem;font-weight:500;
  background:var(--surface);border:1px solid var(--border);
  color:var(--text-2);white-space:nowrap;cursor:pointer;
  transition:all var(--motion);display:flex;align-items:center;justify-content:center;gap:2px;
}
.cat-quick-btn:hover{background:var(--surface-2);color:var(--text)}
.cat-quick-btn.active{
  background:var(--accent);border-color:var(--accent);color:#fff;
  box-shadow:0 2px 8px rgba(232,64,106,.3);
}
.cat-count{
  font-size:.55rem;opacity:.75;font-weight:400;
  background:rgba(255,255,255,.15);padding:0 5px;border-radius:8px;
}
.cat-quick-btn.active .cat-count{background:rgba(255,255,255,.25)}

/* === 9.6 系列文件夹 === */
.series-folder{transition:transform var(--motion),box-shadow var(--motion)}
.series-folder:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.series-count-badge{
  position:absolute;top:6px;right:6px;
  background:var(--accent);color:#fff;
  font-size:.58rem;font-weight:700;
  padding:2px 8px;border-radius:10px;
  z-index:2;letter-spacing:.5px;
}

/* === 10. 分类底部弹出 Sheet === */
.sheet-overlay{
  position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:100;
  opacity:0;pointer-events:none;transition:opacity var(--motion);
}
.sheet-overlay.open{opacity:1;pointer-events:auto}
.sheet-panel{
  position:fixed;left:0;right:0;bottom:0;z-index:101;
  max-height:70vh;overflow-y:auto;
  background:var(--surface);border-top:1px solid var(--border);
  border-radius:var(--radius-lg) var(--radius-lg) 0 0;
  transform:translateY(100%);transition:transform var(--motion);
  padding:20px;padding-bottom:calc(20px + env(safe-area-inset-bottom));
}
.sheet-panel.open{transform:translateY(0)}
.sheet-panel h3{font-size:.9rem;text-align:center;margin-bottom:16px}
.sheet-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.sheet-grid a{
  display:block;padding:12px 8px;text-align:center;border-radius:var(--radius-sm);
  font-size:.78rem;color:var(--text-2);background:var(--surface-2);
  transition:all var(--motion);
}
.sheet-grid a:hover{background:var(--accent);color:#fff}

/* === 11. 书籍网格 === */
.book-grid{
  display:grid;grid-template-columns:repeat(2,1fr);gap:16px;
  padding-bottom:90px;
}
@media(min-width:768px){.book-grid{grid-template-columns:repeat(4,1fr)}}
@media(min-width:1100px){.book-grid{grid-template-columns:repeat(5,1fr)}}
@media(min-width:1400px){.book-grid{grid-template-columns:repeat(6,1fr)}}

.book-card{
  display:block;width:100%;text-decoration:none;color:inherit;
  background:var(--surface);border-radius:var(--radius-sm);
  box-shadow:var(--shadow-md);overflow:hidden;
  transition:box-shadow var(--motion),transform var(--motion);
}
.book-card:hover{box-shadow:var(--shadow-lg)}
.book-card:active{transform:scale(.97)}

.cover-wrap{
  position:relative;width:100%;aspect-ratio:2/3;overflow:hidden;
  background:var(--surface-2);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:12px 8px;
}
.cover-wrap img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.cover-genre{position:absolute;top:6px;left:50%;transform:translateX(-50%);font-size:.5rem;color:rgba(255,255,255,.5);letter-spacing:.08em;background:rgba(0,0,0,.25);border:1px solid rgba(255,255,255,.2);padding:1px 8px;border-radius:3px;z-index:2;white-space:nowrap}
.cover-title{font-size:.74rem;font-weight:700;color:#fff;text-align:center;line-height:1.3;text-shadow:0 2px 8px rgba(0,0,0,.6);z-index:1;max-width:90%}
.cover-chapters{position:absolute;bottom:10px;font-size:.52rem;color:rgba(255,255,255,.4);z-index:1}
/* 覆盖层变体色 */
.cover-wrap::before{content:'';position:absolute;inset:0;opacity:.85;z-index:0}

.card-body{padding:10px 12px}
.card-body .title{font-size:.78rem;font-weight:600;line-height:1.3;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-align:center;transition:color var(--motion)}
.book-card:hover .title{color:var(--accent)}
.card-body .meta{font-size:.62rem;color:var(--text-2);margin-top:4px;display:flex;align-items:center;justify-content:center;gap:4px}
.meta-dot{width:3px;height:3px;border-radius:50%;background:var(--muted)}
.card-badges{position:absolute;top:6px;right:6px;z-index:2;display:flex;flex-direction:column;gap:3px}
.card-badge{padding:2px 7px;border-radius:8px;font-size:.54rem;font-weight:600;backdrop-filter:blur(4px)}
.badge-free{background:var(--free-bg);color:var(--free-text)}
.badge-hot{background:rgba(232,64,106,.15);color:var(--accent)}

/* === 12. 底部导航 === */
.bottom-nav{
  position:fixed;bottom:0;left:0;right:0;z-index:40;
  background:var(--surface);border-top:1px solid var(--border);
  box-shadow:0 -6px 20px rgba(0,0,0,.35);
  display:flex;justify-content:space-around;
  padding:6px 0 env(safe-area-inset-bottom,8px);
}
.bottom-nav button{
  flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;
  background:none;font-size:.58rem;color:var(--text-2);padding:4px 0;
}
.bottom-nav button .nav-icon{font-size:1.1rem}
.bottom-nav button.active{color:var(--accent)}

/* === 13. 详情页 === */
.novel-detail .container{padding-top:16px}
.detail-header{display:flex;gap:14px}
.detail-cover-wrap{width:90px;height:120px;border-radius:var(--radius-sm);overflow:hidden;flex-shrink:0;box-shadow:var(--shadow-md);background:var(--surface-2)}
.detail-cover-wrap img{width:100%;height:100%;object-fit:cover}
.detail-info{flex:1;min-width:0}
.detail-info h1{font-size:1.05rem;font-weight:700;letter-spacing:.02em}
.detail-info .author{font-size:.72rem;color:var(--text-2);margin-top:2px}
.detail-info .cat{font-size:.66rem;color:var(--accent);margin-top:2px}
.detail-info .stats{display:flex;gap:12px;margin-top:4px;font-size:.66rem;color:var(--text-2)}
.detail-intro{font-size:.74rem;color:var(--text-2);line-height:1.6;margin:14px 0;padding:12px;background:var(--surface);border-radius:var(--radius-sm);border:1px solid var(--border)}
.btn-read{
  display:block;width:100%;padding:12px;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;
  border-radius:var(--radius-sm);font-size:.85rem;font-weight:600;text-align:center;margin-bottom:12px;
  transition:opacity var(--motion);
}
.btn-read:active{opacity:.85}
.bookmark-row{display:flex;gap:8px;margin-bottom:12px}
.btn-bookmark{
  flex:1;padding:10px;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-sm);font-size:.74rem;color:var(--text-2);
  cursor:pointer;text-align:center;transition:all var(--motion);
}
.btn-bookmark.active{background:rgba(232,64,106,.1);border-color:var(--accent);color:var(--accent)}

/* 章节目录 */
.chapter-list{padding-bottom:80px}
.chapter-list h3{font-size:.8rem;font-weight:600;margin-bottom:10px;padding-bottom:8px;border-bottom:1px solid var(--border)}
.chapter-item{
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 12px;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-sm);margin-bottom:4px;text-decoration:none;color:inherit;
  transition:transform var(--motion);
}
.chapter-item:active{transform:scale(.98)}
.chapter-item .ch-title{flex:1;font-size:.76rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ch-free{font-size:.58rem;color:var(--free-text);background:var(--free-bg);padding:2px 8px;border-radius:8px}
.ch-lock{font-size:.68rem;color:var(--lock)}

/* === 14. 阅读器 === */
.reader-header{
  position:sticky;top:0;z-index:50;background:var(--bg);
  border-bottom:1px solid var(--border);padding:10px 16px;
  display:flex;align-items:center;gap:8px;transition:background var(--motion);
}
.reader-header .ch-title{flex:1;font-size:.76rem;text-align:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.toolbar-btn{
  background:var(--surface);border:1px solid var(--border);border-radius:6px;
  padding:5px 10px;font-size:.68rem;color:var(--text-2);white-space:nowrap;
}
.reader-body{
  max-width:800px;margin:0 auto;padding:28px 20px;
  font-size:1.04rem;line-height:2;letter-spacing:.03em;
  min-height:60vh;word-wrap:break-word;color:var(--text);
  transition:background var(--motion),color var(--motion);
}
@media(min-width:768px){.reader-body{padding:36px 48px;font-size:1.1rem}}
.reader-body p{text-indent:2em;margin-bottom:.8em}

/* 锁定 */
.reader-body.blurred{
  filter:blur(8px);pointer-events:none;user-select:none;
  opacity:.6;overflow:hidden;
}
.locked-content{position:relative;max-height:300px;overflow:hidden}
.locked-content::after{content:'';position:absolute;bottom:0;left:0;right:0;height:180px;background:linear-gradient(transparent,var(--bg));pointer-events:none}
.lock-box{
  position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);
  width:calc(100% - 32px);max-width:380px;padding:24px;background:var(--surface);
  border:1px solid var(--border);border-radius:var(--radius-md);text-align:center;
  z-index:60;box-shadow:0 0 60px rgba(0,0,0,.8);
}
.lock-box .lock-icon{font-size:2.5rem;margin-bottom:8px}
.lock-box h3{font-size:1rem;color:var(--lock);margin-bottom:4px}
.lock-box p{font-size:.74rem;color:var(--text-2);margin-bottom:14px}
.lock-box input{
  width:100%;padding:10px 14px;border:2px solid var(--border);border-radius:var(--radius-sm);
  font-size:.8rem;text-align:center;margin-bottom:8px;background:var(--bg);color:var(--text);outline:none;
}
.lock-box input:focus{border-color:var(--accent)}
.btn-unlock{
  width:100%;padding:12px;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;
  border-radius:var(--radius-sm);font-size:.82rem;font-weight:600;cursor:pointer;margin-bottom:8px;
}
.btn-login-link{
  width:100%;padding:12px;background:var(--surface);border:1px solid var(--accent);color:var(--accent);
  border-radius:var(--radius-sm);font-size:.78rem;cursor:pointer;margin-bottom:8px;
}
.btn-activate{
  width:100%;padding:14px;background:linear-gradient(135deg,#f59e0b,#f97316);color:#fff;
  border-radius:var(--radius-md);font-size:.9rem;font-weight:700;cursor:pointer;
  animation:pulse-btn 2s infinite;
}
@keyframes pulse-btn{0%,100%{box-shadow:0 0 0 0 rgba(245,158,11,.4)}50%{box-shadow:0 0 0 12px rgba(245,158,11,0)}}
.btn-buy{display:block;font-size:.7rem;color:var(--accent-2);text-decoration:underline}
.unlock-error{font-size:.68rem;color:var(--lock);margin-top:4px;display:none}

/* 导航按钮 */
.chapter-nav{display:flex;gap:8px;padding:12px 16px 80px;max-width:800px;margin:0 auto}

/* === 15. 设置面板 === */
.settings-panel{
  position:fixed;left:0;right:0;bottom:0;z-index:200;
  max-width:var(--container-max);margin:0 auto;
  background:var(--surface);border-radius:var(--radius-lg) var(--radius-lg) 0 0;
  padding:20px;padding-bottom:calc(20px + env(safe-area-inset-bottom));
  transform:translateY(100%);transition:transform var(--motion);
  box-shadow:var(--shadow-lg);
}
.settings-panel.open{transform:translateY(0)}
.settings-panel h3{font-size:.85rem;text-align:center;margin-bottom:14px}
.setting-row{display:flex;align-items:center;justify-content:space-between;padding:8px 0;border-bottom:1px solid var(--border)}
.setting-row .label{font-size:.76rem}
.setting-controls{display:flex;align-items:center;gap:6px}
.font-btn{width:32px;height:32px;border-radius:50%;background:var(--surface-2);border:1px solid var(--border);font-size:.76rem;display:flex;align-items:center;justify-content:center;cursor:pointer}
.theme-toggle{
  width:48px;height:26px;border-radius:13px;background:var(--border);
  position:relative;cursor:pointer;transition:background var(--motion);
}
.theme-toggle::after{content:'🌙';position:absolute;top:2px;left:2px;width:22px;height:22px;font-size:.65rem;display:flex;align-items:center;justify-content:center;transition:left var(--motion)}
.theme-toggle.light{background:#e5e5e5}.theme-toggle.light::after{left:22px;content:'☀️'}
.overlay-bg{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:150;display:none}
.overlay-bg.show{display:block}

/* === 16. 登录弹窗 === */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:300;display:none;align-items:center;justify-content:center}
.modal.show{display:flex}
.modal-card{width:88%;max-width:360px;background:var(--surface);border-radius:var(--radius-md);padding:24px;box-shadow:var(--shadow-lg)}
.modal-card h3{text-align:center;margin-bottom:14px;font-size:.95rem}
.modal-card input{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:.78rem;margin-bottom:8px;background:var(--bg);color:var(--text);outline:none}
.modal-card .btn{width:100%;padding:11px;border-radius:var(--radius-sm);font-size:.82rem;font-weight:600;cursor:pointer;margin-top:4px}
.modal-card .btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff}
.modal-card .btn-ghost{background:var(--surface-2);color:var(--text-2)}
.modal-switch{text-align:center;margin-top:10px;font-size:.7rem;color:var(--text-2)}
.modal-switch a{color:var(--accent);cursor:pointer}
.modal-error{color:var(--lock);font-size:.68rem;text-align:center;display:none;margin-bottom:4px}

/* === 17. Toast / 空状态 === */
.toast{position:fixed;top:20px;left:50%;transform:translateX(-50%) translateY(-120px);background:var(--surface);color:var(--text);padding:10px 24px;border-radius:24px;font-size:.76rem;z-index:999;pointer-events:none;box-shadow:var(--shadow-md);transition:transform var(--motion)}
.toast.show{transform:translateX(-50%) translateY(0)}
.empty-state{text-align:center;padding:60px 20px;color:var(--muted)}
.empty-state .empty-icon{font-size:2.5rem;margin-bottom:10px}
.empty-state p{font-size:.76rem}

/* === 18. 搜索下拉 === */
.search-dropdown {
    position:absolute;top:100%;left:0;right:0;
    background:var(--surface);border:1px solid var(--border);
    border-radius:var(--radius-md);box-shadow:var(--shadow-lg);
    max-height:260px;overflow-y:auto;z-index:60;display:none;
}
.search-dropdown.show{display:block}
.search-dropdown a{
    display:block;padding:10px 16px;font-size:.76rem;color:var(--text-2);
    border-bottom:1px solid var(--border);transition:background var(--motion);
}
.search-dropdown a:hover,.search-dropdown a:focus{background:var(--surface-2);color:var(--text)}
.search-dropdown .no-result{padding:16px;text-align:center;color:var(--muted);font-size:.74rem}

/* === 19. 卡片进阶 === */
.list-card-chapter-pill{
    position:absolute;top:8px;left:8px;z-index:2;
    padding:3px 10px;border-radius:12px;font-size:.56rem;font-weight:600;
    background:rgba(0,0,0,.6);color:#fff;backdrop-filter:blur(4px);
    letter-spacing:.03em;
}
.list-card-tooltip{
    position:absolute;inset:0;z-index:3;
    background:rgba(0,0,0,.88);color:#ddd;
    display:flex;flex-direction:column;justify-content:center;align-items:center;
    padding:16px;text-align:center;opacity:0;pointer-events:none;
    transition:opacity var(--motion);
}
.book-card:hover .list-card-tooltip{opacity:1}
.tooltip-brief{
    font-size:.68rem;line-height:1.5;
    display:-webkit-box;-webkit-line-clamp:6;-webkit-box-orient:vertical;
    overflow:hidden;margin-bottom:10px;
}
.tooltip-meta{font-size:.6rem;color:var(--muted)}
.list-card-series{font-size:.6rem;color:var(--accent);margin-top:2px}

/* === 20. 辅助 === */
.fav-btn{background:none;font-size:1.3rem;cursor:pointer;padding:4px 8px;transition:transform var(--motion)}
.fav-btn:active{transform:scale(1.3)}.fav-btn.on{color:var(--accent)}
.history-time{font-size:.62rem;color:var(--muted);margin-top:2px}
/* v2 */
/* v3 */