/* ============================================================
   小游戏门户 · 现代化样式 (app.css)
   暗色玻璃拟态 + 渐变霓虹风格
   ============================================================ */

:root{
  --bg-0:#101a36;
  --bg-1:#0d1326;
  --surface:rgba(255,255,255,.045);
  --surface-2:rgba(255,255,255,.07);
  --border:rgba(255,255,255,.09);
  --border-strong:rgba(255,255,255,.16);
  --text:#e8ecf6;
  --muted:#9aa6c4;
  --muted-2:#6b7798;
  --accent:#7c3aed;
  --accent-2:#ec4899;
  --cyan:#22d3ee;
  --grad:linear-gradient(135deg,#7c3aed 0%,#ec4899 55%,#f97316 100%);
  --grad-soft:linear-gradient(135deg,rgba(124,58,237,.18),rgba(236,72,153,.18));
  --shadow:0 18px 50px rgba(0,0,0,.45);
  --radius:18px;
  --radius-sm:12px;
  --sidebar-w:264px;
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}

*{box-sizing:border-box;}
html,body{height:100%;}
body{
  margin:0;
  font-family:var(--font);
  color:var(--text);
  background:
    radial-gradient(1200px 600px at 15% -10%,rgba(124,58,237,.20),transparent 60%),
    radial-gradient(1000px 600px at 110% 10%,rgba(236,72,153,.16),transparent 55%),
    radial-gradient(900px 700px at 50% 120%,rgba(34,211,238,.10),transparent 60%),
    linear-gradient(160deg,var(--bg-0),var(--bg-1));
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}

/* ============ 登录页 ============ */
#login{
  position:fixed;inset:0;z-index:1000;
  display:flex;align-items:center;justify-content:center;
  padding:24px;
  background:
    radial-gradient(900px 600px at 12% -10%,rgba(124,58,237,.30),transparent 60%),
    radial-gradient(900px 700px at 110% 20%,rgba(236,72,153,.22),transparent 55%),
    radial-gradient(800px 600px at 50% 120%,rgba(34,211,238,.14),transparent 60%),
    linear-gradient(160deg,#101a36,#0d1326 60%,#0a0f1f);
  overflow:hidden;
}
#login::before,#login::after{
  content:"";position:absolute;border-radius:50%;filter:blur(70px);opacity:.55;
}
#login::before{width:420px;height:420px;background:rgba(124,58,237,.45);top:-120px;left:-80px;animation:float1 9s ease-in-out infinite;}
#login::after{width:380px;height:380px;background:rgba(236,72,153,.40);bottom:-100px;right:-60px;animation:float2 11s ease-in-out infinite;}
@keyframes float1{50%{transform:translate(40px,50px) scale(1.08);}}
@keyframes float2{50%{transform:translate(-40px,-40px) scale(1.1);}}

.login-card{
  position:relative;z-index:2;width:min(420px,100%);
  background:rgba(255,255,255,.055);
  border:1px solid var(--border);
  border-radius:22px;padding:38px 34px 30px;
  backdrop-filter:blur(22px) saturate(140%);
  -webkit-backdrop-filter:blur(22px) saturate(140%);
  box-shadow:var(--shadow);
}
.login-logo{
  width:64px;height:64px;border-radius:18px;margin:0 auto 14px;
  display:flex;align-items:center;justify-content:center;
  background:var(--grad);box-shadow:0 10px 30px rgba(236,72,153,.45);
  font-size:30px;
}
.login-card h1{margin:0 0 4px;text-align:center;font-size:23px;letter-spacing:.5px;}
.login-sub{margin:0 0 24px;text-align:center;color:var(--muted);font-size:13.5px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:12.5px;color:var(--muted);margin:0 0 7px 4px;}
.field input{
  width:100%;padding:13px 15px;border-radius:12px;
  background:rgba(255,255,255,.06);border:1px solid var(--border);
  color:var(--text);font-size:14px;outline:none;transition:.2s;
}
.field input::placeholder{color:var(--muted-2);}
.field input:focus{border-color:rgba(236,72,153,.7);background:rgba(255,255,255,.09);box-shadow:0 0 0 3px rgba(236,72,153,.16);}
.login-options{display:flex;align-items:center;justify-content:space-between;margin:2px 2px 18px;font-size:12.5px;color:var(--muted);}
.login-options label{display:flex;align-items:center;gap:7px;cursor:pointer;}
.login-options a{color:var(--cyan);text-decoration:none;}
.btn-login{
  width:100%;padding:13px;border:none;border-radius:12px;cursor:pointer;
  background:var(--grad);color:#fff;font-size:15px;font-weight:700;letter-spacing:1px;
  transition:.2s;box-shadow:0 10px 26px rgba(236,72,153,.40);
}
.btn-login:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(236,72,153,.55);}
.btn-login:active{transform:translateY(0);}
.btn-guest{
  width:100%;padding:11px;margin-top:10px;border-radius:12px;cursor:pointer;
  background:transparent;border:1px solid var(--border-strong);color:var(--muted);
  font-size:13.5px;transition:.2s;
}
.btn-guest:hover{color:var(--text);border-color:var(--accent-2);background:rgba(255,255,255,.04);}
.login-hint{margin:14px 0 0;text-align:center;font-size:12px;color:var(--muted-2);}
.login-hint b{color:var(--cyan);font-weight:600;}
.login-error{display:none;margin:0 0 14px;padding:9px 12px;border-radius:10px;font-size:12.5px;background:rgba(244,63,94,.14);border:1px solid rgba(244,63,94,.4);color:#fda4af;}
.login-error.show{display:block;animation:shake .3s;}
@keyframes shake{0%,100%{transform:translateX(0);}25%{transform:translateX(-5px);}75%{transform:translateX(5px);}}

/* ============ 应用布局 ============ */
#app{display:none;height:100vh;flex-direction:row;overflow:hidden;}
#app.show{display:flex;}

/* 侧边栏 */
.sidebar{
  width:var(--sidebar-w);flex:0 0 var(--sidebar-w);
  display:flex;flex-direction:column;
  background:rgba(13,19,38,.72);
  border-right:1px solid var(--border);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  transition:transform .3s ease;
}
.brand{
  display:flex;align-items:center;gap:12px;padding:22px 22px 18px;
  border-bottom:1px solid var(--border);
}
.brand-logo{
  width:42px;height:42px;border-radius:12px;flex:0 0 42px;
  display:flex;align-items:center;justify-content:center;
  background:var(--grad);font-size:22px;box-shadow:0 8px 22px rgba(124,58,237,.45);
}
.brand-text b{display:block;font-size:17px;letter-spacing:.5px;}
.brand-text span{display:block;font-size:11.5px;color:var(--muted-2);margin-top:2px;}

.nav{flex:1;overflow-y:auto;padding:14px 12px;margin:0;list-style:none;}
.nav::-webkit-scrollbar{width:6px;}
.nav::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:6px;}
.nav li{margin:3px 0;}
.nav a{
  display:flex;align-items:center;gap:13px;
  padding:12px 14px;border-radius:12px;color:var(--muted);
  text-decoration:none;font-size:14.5px;transition:.18s;position:relative;
}
.nav a i{width:20px;text-align:center;font-size:16px;color:var(--muted-2);transition:.18s;}
.nav a p{margin:0;}
.nav a:hover{background:var(--surface);color:var(--text);}
.nav a:hover i{color:var(--accent-2);}
.nav li.active a{
  color:#fff;background:var(--grad-soft);
  border:1px solid rgba(236,72,153,.35);
  box-shadow:inset 0 0 18px rgba(236,72,153,.10);
}
.nav li.active a i{color:var(--accent-2);}
.nav li.active a::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:4px;height:22px;border-radius:0 4px 4px 0;background:var(--grad);
}
.side-foot{padding:14px 18px;border-top:1px solid var(--border);font-size:11.5px;color:var(--muted-2);text-align:center;}

/* 主区 */
.main{flex:1;display:flex;flex-direction:column;min-width:0;height:100vh;}
.topbar{
  display:flex;align-items:center;gap:16px;
  padding:14px 22px;border-bottom:1px solid var(--border);
  background:rgba(13,19,38,.55);backdrop-filter:blur(14px);
}
.topbar .menu-btn{display:none;background:none;border:none;color:var(--text);font-size:20px;cursor:pointer;}
.crumb{display:flex;align-items:center;gap:9px;font-size:15px;min-width:0;}
.crumb .dot{width:9px;height:9px;border-radius:50%;background:var(--grad);box-shadow:0 0 10px rgba(236,72,153,.7);}
.crumb b{font-weight:700;}
.crumb span{color:var(--muted-2);}
.search{
  flex:1;max-width:420px;margin-left:auto;position:relative;
}
.search input{
  width:100%;padding:10px 14px 10px 38px;border-radius:11px;
  background:rgba(255,255,255,.06);border:1px solid var(--border);
  color:var(--text);font-size:13.5px;outline:none;transition:.2s;
}
.search input:focus{border-color:rgba(124,58,237,.6);background:rgba(255,255,255,.09);}
.search i{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--muted-2);font-size:14px;}
.user{display:flex;align-items:center;gap:10px;white-space:nowrap;}
.user .avatar{
  width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:var(--grad);color:#fff;font-weight:700;font-size:14px;
}
.user .uname{font-size:13.5px;color:var(--text);}
.btn-logout{
  padding:8px 14px;border-radius:10px;cursor:pointer;font-size:13px;
  background:rgba(255,255,255,.05);border:1px solid var(--border);color:var(--muted);transition:.2s;
}
.btn-logout:hover{color:#fff;border-color:rgba(244,63,94,.5);background:rgba(244,63,94,.12);}
.btn-sound{
  width:38px;height:38px;flex:0 0 38px;border-radius:10px;cursor:pointer;font-size:16px;line-height:1;
  background:rgba(255,255,255,.05);border:1px solid var(--border);color:var(--text);transition:.2s;
  display:flex;align-items:center;justify-content:center;
}
.btn-sound:hover{color:#fff;border-color:rgba(124,58,237,.5);background:rgba(124,58,237,.14);}
.btn-sound.muted{opacity:.55;}

.content{flex:1;min-height:0;position:relative;}
.content iframe{position:absolute;inset:0;width:100%;height:100%;border:none;background:transparent;}

/* 移动端遮罩 */
.scrim{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:40;}

/* ============ 响应式 ============ */
@media(max-width:860px){
  .sidebar{position:fixed;z-index:50;top:0;bottom:0;left:0;transform:translateX(-100%);}
  #app.nav-open .sidebar{transform:translateX(0);}
  #app.nav-open .scrim{display:block;}
  .topbar .menu-btn{display:block;}
  .search{display:none;}
  .user .uname{display:none;}
  .brand-text b{font-size:16px;}
}