/* ============================================================
   趣玩游戏库 GameBox — games.css
   游戏列表页 · 深色科技风 · 玻璃拟态 · 响应式
   ============================================================ */

:root{
  --bg:#0f1115;
  --bg-2:#0b0d11;
  --card:#181c24;
  --card-2:#1d2330;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --txt:#e6e9f0;
  --txt-2:#9aa3b2;
  --txt-3:#6b7384;
  --blue:#4f8cff;
  --blue-2:#2f6bff;
  --purple:#a855f7;
  --grad:linear-gradient(135deg,#4f8cff 0%,#7c5cff 50%,#a855f7 100%);
  --grad-blue:linear-gradient(135deg,#4f8cff,#2f6bff);
  --grad-vip:linear-gradient(135deg,#a855f7,#ff506e);
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
  --shadow-lg:0 24px 60px rgba(0,0,0,.55);
  --glass:rgba(24,28,36,.72);
  --blur:saturate(160%) blur(14px);
  --ease:cubic-bezier(.22,.61,.36,1);
  --maxw:1240px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"Microsoft YaHei","PingFang SC","Segoe UI",system-ui,sans-serif;
  background:var(--bg);color:var(--txt);line-height:1.6;overflow-x:hidden;min-height:100vh;
}
a{color:inherit;text-decoration:none}
ul{list-style:none}
img{display:block;max-width:100%}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
select{font-family:inherit}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ===== 通用按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 22px;border-radius:30px;font-size:15px;font-weight:600;
  transition:transform .25s var(--ease),box-shadow .25s,opacity .2s,background .25s;
  white-space:nowrap;user-select:none;
}
.btn:active{transform:translateY(1px) scale(.98)}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 24px rgba(79,140,255,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(79,140,255,.5)}
.btn-ghost{background:rgba(255,255,255,.06);color:var(--txt);border:1px solid var(--line-strong);backdrop-filter:var(--blur)}
.btn-ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}
.btn-login{padding:9px 22px;background:rgba(255,255,255,.06);border:1px solid var(--line-strong);color:var(--txt)}
.btn-login:hover{background:var(--grad);border-color:transparent}
.btn-vip{background:var(--grad-vip);color:#fff;box-shadow:0 8px 24px rgba(168,85,247,.35);width:100%;margin-top:14px}
.btn-vip:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(168,85,247,.5)}

/* ===== 导航栏 ===== */
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(15,17,21,.65);backdrop-filter:var(--blur);
  border-bottom:1px solid transparent;transition:background .3s,border-color .3s,box-shadow .3s;
}
.navbar.scrolled{background:rgba(11,13,17,.9);border-color:var(--line);box-shadow:0 6px 24px rgba(0,0,0,.4)}
.nav-inner{display:flex;align-items:center;height:68px;gap:24px}
.logo{display:flex;align-items:center;gap:9px;font-size:20px;font-weight:800;letter-spacing:.5px;flex-shrink:0}
.logo-icon{font-size:22px;filter:drop-shadow(0 0 8px rgba(79,140,255,.6))}
.logo-text{color:#fff}
.logo-accent{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}

.nav-menu{flex:1;display:flex;justify-content:center}
.nav-menu ul{display:flex;gap:6px}
.nav-link{position:relative;display:block;padding:9px 16px;border-radius:10px;color:var(--txt-2);font-size:15px;font-weight:500;transition:color .25s,background .25s}
.nav-link:hover{color:var(--txt);background:rgba(255,255,255,.05)}
.nav-link.active{color:#fff}
.nav-link.active::after{content:"";position:absolute;left:16px;right:16px;bottom:3px;height:2px;border-radius:2px;background:var(--grad)}

.nav-actions{display:flex;align-items:center;gap:14px;flex-shrink:0}
.search-box{display:flex;align-items:center;gap:6px;background:rgba(255,255,255,.06);border:1px solid var(--line);border-radius:30px;padding:5px 6px 5px 16px;transition:border-color .25s,background .25s}
.search-box:focus-within{border-color:var(--blue);background:rgba(79,140,255,.08)}
.search-box input{background:none;border:none;outline:none;color:var(--txt);width:170px;font-size:14px}
.search-box input::placeholder{color:var(--txt-3)}
.search-btn{display:grid;place-items:center;width:32px;height:32px;border-radius:50%;color:var(--txt-2);transition:.2s}
.search-btn:hover{background:var(--grad);color:#fff}

.nav-toggle{display:none;flex-direction:column;gap:5px;padding:8px}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--txt);border-radius:2px;transition:.3s}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== 页面标题区 ===== */
.page-head{padding:100px 0 30px;background:linear-gradient(180deg,var(--bg-2) 0%,var(--bg) 100%);border-bottom:1px solid var(--line)}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--txt-3);margin-bottom:16px}
.breadcrumb a{color:var(--txt-2);transition:.2s}
.breadcrumb a:hover{color:var(--blue)}
.breadcrumb .sep{opacity:.6}
.breadcrumb .cur{color:var(--txt);font-weight:600}
.page-title{font-size:34px;font-weight:900;letter-spacing:1px;margin-bottom:8px;background:linear-gradient(120deg,#fff 30%,#9cc0ff 80%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.page-desc{color:var(--txt-2);font-size:15px;max-width:600px}

/* ===== 主布局 ===== */
.main-layout{display:grid;grid-template-columns:1fr 300px;gap:30px;padding-top:30px;padding-bottom:60px;align-items:start}
.content-col{min-width:0}
.sidebar{position:sticky;top:90px;display:flex;flex-direction:column;gap:20px}

/* ===== 筛选面板 ===== */
.filter-panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;margin-bottom:26px;position:relative;
}
.filter-search{margin-bottom:20px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.search-large{display:flex;gap:12px}
.search-large input{
  flex:1;padding:12px 18px;background:rgba(255,255,255,.05);border:1px solid var(--line);
  border-radius:30px;color:var(--txt);font-size:15px;outline:none;transition:border-color .25s,background .25s;
}
.search-large input:focus{border-color:var(--blue);background:rgba(79,140,255,.08)}
.search-large input::placeholder{color:var(--txt-3)}
.search-large .btn{padding:12px 28px}

.filter-group{margin-bottom:18px}
.filter-group:last-of-type{margin-bottom:0}
.filter-label{display:inline-block;font-size:13px;font-weight:700;color:var(--txt-2);margin-right:14px;vertical-align:middle}
.filter-chips{display:inline-flex;flex-wrap:wrap;gap:8px;vertical-align:middle;margin-top:6px}
.chip{
  padding:6px 16px;border-radius:20px;font-size:13px;font-weight:500;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--txt-2);transition:.25s;
}
.chip:hover{color:var(--txt);border-color:var(--line-strong);background:rgba(255,255,255,.08)}
.chip.active{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 6px 18px rgba(79,140,255,.35)}

.filter-foot{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:20px;padding-top:18px;border-top:1px solid var(--line);
}
.filter-result{font-size:14px;color:var(--txt-3)}
.filter-result b{color:var(--blue);font-size:18px;font-weight:800;margin:0 3px}
.filter-sort{display:flex;align-items:center;gap:10px}
.filter-sort select{
  padding:8px 16px;background:rgba(255,255,255,.05);border:1px solid var(--line);
  border-radius:8px;color:var(--txt);font-size:13px;cursor:pointer;outline:none;transition:.25s;
}
.filter-sort select:hover{border-color:var(--line-strong)}
.filter-sort select option{background:var(--card);color:var(--txt)}
.filter-reset{
  padding:8px 16px;border-radius:8px;font-size:13px;color:var(--txt-3);
  background:rgba(255,255,255,.04);border:1px solid var(--line);transition:.25s;
}
.filter-reset:hover{color:#ff8a8a;border-color:rgba(255,80,110,.4);background:rgba(255,80,110,.08)}

.filter-toggle-btn{display:none;width:100%;padding:12px;background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:10px;color:var(--txt);font-size:14px;font-weight:600;justify-content:space-between;align-items:center;transition:.25s}
.filter-toggle-btn:hover{background:rgba(255,255,255,.08)}
.toggle-arrow{transition:transform .3s;font-size:12px}
.filter-toggle-btn.collapsed .toggle-arrow{transform:rotate(180deg)}

/* ===== 游戏列表区 ===== */
.list-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.list-title{font-size:22px;font-weight:800;position:relative;padding-left:14px}
.list-title::before{content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:3px;background:var(--grad)}

.view-mode{display:flex;gap:4px;background:var(--card);border:1px solid var(--line);border-radius:8px;padding:3px}
.vm-btn{width:34px;height:30px;border-radius:6px;color:var(--txt-3);font-size:16px;transition:.2s;display:grid;place-items:center}
.vm-btn:hover{color:var(--txt)}
.vm-btn.active{background:var(--grad);color:#fff}

.game-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.game-grid.list-mode{grid-template-columns:1fr;gap:14px}

/* 卡片 — 网格模式 */
.game-card{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;cursor:pointer;transition:transform .35s var(--ease),box-shadow .35s,border-color .35s;
  animation:fadeup .5s var(--ease) both;
}
.game-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:rgba(79,140,255,.45)}
.game-cover{position:relative;aspect-ratio:3/4;overflow:hidden;background:#0b0d11}
.game-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.game-card:hover .game-cover img{transform:scale(1.1)}
.game-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(0,0,0,.5) 100%)}
.game-score{
  position:absolute;top:10px;right:10px;z-index:2;padding:4px 10px;border-radius:20px;
  font-size:12px;font-weight:800;color:#ffd66b;background:rgba(0,0,0,.6);backdrop-filter:blur(6px);
}
.game-body{padding:14px 16px 16px}
.game-name{font-size:15px;font-weight:700;line-height:1.35;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.game-tags{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px}
.tag{font-size:11px;padding:3px 8px;border-radius:20px;color:var(--txt-2);background:rgba(79,140,255,.1);border:1px solid rgba(79,140,255,.25)}
.game-meta{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--txt-3);margin-bottom:12px}
.game-meta .stars{color:#ffd66b;letter-spacing:1px;font-size:11px}
.game-date{font-size:11px}
.game-btn{
  width:100%;padding:9px;border-radius:10px;font-size:13px;font-weight:600;
  background:rgba(79,140,255,.1);border:1px solid rgba(79,140,255,.3);color:#9cc0ff;transition:.25s;
}
.game-card:hover .game-btn{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 6px 16px rgba(79,140,255,.35)}

/* 卡片 — 列表模式 */
.game-grid.list-mode .game-card{display:grid;grid-template-columns:140px 1fr auto;gap:0;align-items:stretch}
.game-grid.list-mode .game-cover{aspect-ratio:auto;height:100%}
.game-grid.list-mode .game-body{padding:18px 22px;display:flex;flex-direction:column;justify-content:center}
.game-grid.list-mode .game-name{font-size:18px;white-space:normal;margin-bottom:10px}
.game-grid.list-mode .game-meta{margin-bottom:14px}
.game-grid.list-mode .game-tags{margin-bottom:12px}
.game-grid.list-mode .game-btn{width:auto;align-self:center;margin-right:20px;padding:10px 24px}

/* ===== 空状态 ===== */
.empty-state{text-align:center;padding:80px 20px;grid-column:1/-1}
.empty-icon{font-size:60px;margin-bottom:18px;opacity:.5}
.empty-state h3{font-size:20px;font-weight:700;margin-bottom:8px}
.empty-state p{color:var(--txt-3);margin-bottom:20px;font-size:14px}

/* ===== 分页 ===== */
.pagination{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:34px;flex-wrap:wrap}
.page-btn{
  min-width:40px;height:40px;padding:0 12px;border-radius:10px;font-size:14px;font-weight:600;
  background:var(--card);border:1px solid var(--line);color:var(--txt-2);transition:.25s;display:inline-flex;align-items:center;justify-content:center;
}
.page-btn:hover:not(:disabled){border-color:var(--blue);color:var(--txt);background:var(--card-2)}
.page-btn.active{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 6px 16px rgba(79,140,255,.35)}
.page-btn:disabled{opacity:.35;cursor:not-allowed}
.page-ellipsis{color:var(--txt-3);padding:0 4px}

/* ===== 侧边排行榜 ===== */
.rank-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;overflow:hidden}
.rank-title{font-size:16px;font-weight:700;margin-bottom:16px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.rank-list{display:flex;flex-direction:column;gap:4px}
.rank-item{
  display:flex;align-items:center;gap:12px;padding:9px 10px;border-radius:10px;cursor:pointer;
  transition:background .25s,transform .25s;
}
.rank-item:hover{background:rgba(255,255,255,.05);transform:translateX(3px)}
.rank-no{flex-shrink:0;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;font-size:13px;font-weight:900;font-style:italic;color:var(--txt-3);background:rgba(255,255,255,.06)}
.rank-item:nth-child(1) .rank-no{color:#fff;background:linear-gradient(135deg,#ffd24a,#ff8a3a)}
.rank-item:nth-child(2) .rank-no{color:#fff;background:linear-gradient(135deg,#cfd6e6,#9aa6bd)}
.rank-item:nth-child(3) .rank-no{color:#fff;background:linear-gradient(135deg,#e0905a,#b5653a)}
.rank-cover{width:38px;height:50px;border-radius:6px;overflow:hidden;flex-shrink:0;background:#0b0d11}
.rank-cover img{width:100%;height:100%;object-fit:cover}
.rank-info{flex:1;min-width:0}
.rank-name{font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:3px}
.rank-heat{font-size:11px;color:#ff7a59;font-weight:600}

/* ===== 侧边推广卡 ===== */
.promo-card{
  position:relative;padding:24px;border-radius:var(--radius);overflow:hidden;text-align:center;
  background:linear-gradient(135deg,#1a1230 0%,#101a3a 60%,#0f1722 100%);
  border:1px solid rgba(168,85,247,.3);
}
.promo-glow{position:absolute;top:-30%;right:-20%;width:80%;height:160%;background:radial-gradient(circle,rgba(168,85,247,.4),transparent 60%);pointer-events:none}
.promo-flag{display:inline-block;padding:4px 12px;border-radius:20px;font-size:11px;font-weight:700;background:var(--grad-vip);color:#fff;margin-bottom:12px;position:relative;z-index:1}
.promo-card h3{font-size:18px;font-weight:700;margin-bottom:6px;position:relative;z-index:1}
.promo-card p{font-size:12px;color:var(--txt-2);position:relative;z-index:1}
.promo-card .btn{position:relative;z-index:1}

/* ===== Footer ===== */
.footer{background:var(--bg-2);border-top:1px solid var(--line);padding-top:54px}
.footer-inner{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding-bottom:36px}
.footer-brand .logo{margin-bottom:14px}
.footer-desc{color:var(--txt-3);font-size:13px;max-width:280px}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;color:#fff}
.footer-col ul{display:grid;gap:10px}
.footer-col a{color:var(--txt-3);font-size:13px;transition:.2s}
.footer-col a:hover{color:var(--blue)}
.footer-bottom{border-top:1px solid var(--line);padding:20px 0;text-align:center}
.footer-bottom p{font-size:12px;color:var(--txt-3)}

/* ===== Toast ===== */
.toast{position:fixed;left:50%;bottom:34px;transform:translateX(-50%) translateY(20px);padding:12px 26px;border-radius:30px;font-size:14px;font-weight:600;color:#fff;background:rgba(24,28,36,.95);border:1px solid var(--line-strong);box-shadow:var(--shadow);backdrop-filter:blur(10px);opacity:0;pointer-events:none;transition:.35s var(--ease);z-index:400}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ===== 回到顶部 ===== */
.back-top{position:fixed;right:26px;bottom:26px;width:46px;height:46px;border-radius:50%;background:var(--grad);color:#fff;font-size:20px;font-weight:700;box-shadow:0 10px 26px rgba(79,140,255,.4);opacity:0;pointer-events:none;transition:.3s var(--ease);z-index:90;display:grid;place-items:center}
.back-top.show{opacity:1;pointer-events:auto}
.back-top:hover{transform:translateY(-4px)}

@keyframes fadeup{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1440px){
  .game-grid{grid-template-columns:repeat(4,1fr)}
  .main-layout{grid-template-columns:1fr 280px}
}
@media (max-width:1200px){
  .game-grid{grid-template-columns:repeat(3,1fr)}
  .main-layout{grid-template-columns:1fr 260px;gap:24px}
  .search-box input{width:130px}
}
@media (max-width:1024px){
  .game-grid{grid-template-columns:repeat(3,1fr)}
  .main-layout{grid-template-columns:1fr;gap:24px}
  .sidebar{position:static;flex-direction:row;gap:16px;flex-wrap:wrap}
  .rank-card{flex:1;min-width:300px}
  .promo-card{flex:1;min-width:240px}
}
@media (max-width:900px){
  .nav-toggle{display:flex}
  .nav-menu{position:fixed;top:68px;left:0;right:0;flex-direction:column;background:rgba(11,13,17,.97);backdrop-filter:blur(16px);border-bottom:1px solid var(--line);padding:14px 24px 22px;transform:translateY(-130%);transition:transform .35s var(--ease);max-height:calc(100vh - 68px);overflow:auto}
  .nav-menu.open{transform:translateY(0)}
  .nav-menu ul{flex-direction:column;gap:4px}
  .nav-link{padding:13px 16px;font-size:16px}
  .nav-link.active::after{display:none}
  .nav-link.active{background:rgba(79,140,255,.15)}
  .nav-actions{margin-left:auto}
  .sidebar{flex-direction:column}
  .filter-toggle-btn{display:flex}
  .filter-panel.collapsed .filter-search,
  .filter-panel.collapsed .filter-group,
  .filter-panel.collapsed .filter-foot{display:none}
  .filter-panel.collapsed{padding:14px 24px}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .page-head{padding:90px 0 20px}
  .page-title{font-size:26px}
  .game-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .game-grid.list-mode{grid-template-columns:1fr}
  .game-grid.list-mode .game-card{grid-template-columns:100px 1fr}
  .game-grid.list-mode .game-btn{align-self:stretch;margin-right:0;margin:0 16px 16px}
  .filter-foot{flex-direction:column;align-items:flex-start;gap:12px}
  .filter-sort{width:100%}
  .filter-sort select{flex:1}
  .footer-inner{grid-template-columns:1fr 1fr;gap:24px}
  .search-large{flex-direction:column}
  .search-large .btn{width:100%}
}
@media (max-width:480px){
  .page-title{font-size:22px}
  .game-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .game-body{padding:12px}
  .game-name{font-size:14px}
  .footer-inner{grid-template-columns:1fr}
  .vm-btn{display:none}
  .view-mode{display:none}
  .list-head{margin-bottom:14px}
  .page-btn{min-width:36px;height:36px;font-size:13px}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}