@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@500;700&family=Noto+Sans+SC:wght@400;500;700&display=swap');

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#030508;
  --bg2:#0a1020;
  --card:rgba(12,20,40,.75);
  --border:rgba(0,212,255,.22);
  --text:#eef6ff;
  --muted:#8ba3c7;
  --cyan:#00e5ff;
  --purple:#a855f7;
  --pink:#ec4899;
  --ok:#34d399;
  --err:#f87171;
  --font:'Noto Sans SC',system-ui,sans-serif;
  --display:'Orbitron','Noto Sans SC',sans-serif;
  --nav-h:64px;
}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden;min-height:100vh}
a{color:var(--cyan);text-decoration:none;transition:.2s}
a:hover{color:#fff}

#canvas-bg{position:fixed;inset:0;z-index:0;pointer-events:none}
.page-glow{position:fixed;width:60vmax;height:60vmax;border-radius:50%;filter:blur(100px);opacity:.18;pointer-events:none;z-index:0}
.glow-1{top:-20%;left:-10%;background:var(--purple)}
.glow-2{bottom:-30%;right:-15%;background:var(--cyan)}

.site-nav{position:fixed;top:0;left:0;right:0;height:var(--nav-h);z-index:1000;display:flex;align-items:center;justify-content:space-between;padding:0 clamp(16px,4vw,40px);background:rgba(3,5,8,.82);backdrop-filter:blur(16px);border-bottom:1px solid var(--border)}
.nav-brand{display:flex;align-items:center;gap:12px;font-family:var(--display);font-size:clamp(.85rem,2.5vw,1rem);font-weight:700;letter-spacing:.05em;color:#fff}
.nav-brand img{width:40px;height:40px;border-radius:10px;border:1px solid var(--border)}
.nav-links{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.nav-links a,.nav-btn{padding:8px 16px;border-radius:999px;font-size:14px;font-weight:500;color:var(--muted);border:1px solid transparent}
.nav-links a:hover{color:#fff;background:rgba(0,229,255,.08)}
.nav-btn-primary{background:linear-gradient(135deg,var(--cyan),var(--purple));color:#030508!important;border:none;font-weight:700}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--border);border-radius:10px;background:transparent;color:#fff;font-size:20px;cursor:pointer}

main{position:relative;z-index:1;padding-top:var(--nav-h)}
.container{width:min(1140px,100% - 32px);margin:0 auto}
.page-center{min-height:calc(100vh - var(--nav-h));display:flex;align-items:center;justify-content:center;padding:40px 16px}

/* 首页 Hero */
.hero{min-height:calc(100vh - var(--nav-h));display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:60px 20px;position:relative}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:8px 18px;border-radius:999px;border:1px solid var(--border);background:rgba(0,229,255,.06);font-size:13px;color:var(--cyan);margin-bottom:28px;animation:fadeUp .8s ease}
.hero h1{font-family:var(--display);font-size:clamp(2rem,8vw,3.8rem);line-height:1.15;margin-bottom:20px;background:linear-gradient(135deg,#fff 20%,var(--cyan) 50%,var(--purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;animation:fadeUp .8s .1s both}
.hero p{font-size:clamp(1rem,3vw,1.2rem);color:var(--muted);max-width:560px;margin:0 auto 36px;animation:fadeUp .8s .2s both}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;animation:fadeUp .8s .3s both}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 28px;border-radius:12px;font-weight:600;font-size:15px;border:none;cursor:pointer;transition:transform .2s,box-shadow .2s;font-family:inherit}
.btn-primary{background:linear-gradient(135deg,var(--cyan),#6366f1);color:#030508;box-shadow:0 8px 32px rgba(0,229,255,.35)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 12px 40px rgba(0,229,255,.45)}
.btn-outline{background:transparent;color:#fff;border:1px solid var(--border)}
.btn-outline:hover{border-color:var(--cyan);background:rgba(0,229,255,.06)}
.btn-block{width:100%}
.btn-sm{padding:10px 18px;font-size:13px}
.btn-ghost{background:rgba(255,255,255,.04);border:1px solid var(--border);color:var(--text)}

.features{padding:80px 0}
.section-title{text-align:center;font-family:var(--display);font-size:clamp(1.5rem,4vw,2rem);margin-bottom:48px}
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.feature-card{padding:28px;border-radius:20px;background:var(--card);border:1px solid var(--border);backdrop-filter:blur(12px);transition:transform .3s,border-color .3s}
.feature-card:hover{transform:translateY(-6px);border-color:var(--cyan)}
.feature-card .icon{font-size:2rem;margin-bottom:12px}
.feature-card h3{font-size:1.1rem;margin-bottom:8px}
.feature-card p{color:var(--muted);font-size:14px}

/* 表单 / 卡片 */
.glass-card{background:var(--card);border:1px solid var(--border);border-radius:20px;padding:clamp(24px,5vw,36px);backdrop-filter:blur(16px);box-shadow:0 24px 80px rgba(0,0,0,.4)}
.auth-wrap{width:min(440px,100%)}
.form-title{font-family:var(--display);font-size:1.5rem;margin-bottom:8px}
.form-sub{color:var(--muted);font-size:14px;margin-bottom:24px}
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px}
.form-control{width:100%;padding:14px 16px;border-radius:12px;border:1px solid var(--border);background:rgba(0,0,0,.4);color:var(--text);font-size:16px;outline:none;transition:border .2s,box-shadow .2s;-webkit-appearance:none}
.form-control:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(0,229,255,.12)}
.code-row{display:flex;gap:10px}
.code-row .form-control{flex:1;min-width:0}
.code-row .btn{flex-shrink:0;white-space:nowrap}

.alert{padding:12px 16px;border-radius:10px;margin-bottom:16px;font-size:14px}
.alert-error{background:rgba(248,113,113,.12);border:1px solid var(--err);color:#fecaca}
.alert-success{background:rgba(52,211,153,.12);border:1px solid var(--ok);color:#a7f3d0}

/* 工作台 */
.studio-header{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;padding:24px 0}
.balance-chip{display:inline-flex;align-items:center;gap:10px;padding:10px 20px;border-radius:999px;background:linear-gradient(135deg,rgba(0,229,255,.12),rgba(168,85,247,.12));border:1px solid var(--border);font-weight:700}
.balance-chip strong{color:var(--cyan);font-size:1.2rem}
.upload-zone{border:2px dashed var(--border);border-radius:16px;padding:32px 16px;text-align:center;cursor:pointer;transition:.25s;color:var(--muted)}
.upload-zone:hover{border-color:var(--cyan);background:rgba(0,229,255,.04);color:var(--text)}
.upload-zone.has-file{border-color:var(--ok);color:var(--ok)}

/* 充值 */
.pkg-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px;margin:20px 0}
.pkg-item{position:relative;cursor:pointer}
.pkg-item input{position:absolute;opacity:0}
.pkg-box{display:block;padding:20px;border-radius:16px;border:2px solid var(--border);background:rgba(0,0,0,.3);text-align:center;transition:.25s}
.pkg-item input:checked + .pkg-box{border-color:var(--cyan);box-shadow:0 0 24px rgba(0,229,255,.2)}
.pkg-box .coins{font-size:1.4rem;font-weight:700;color:var(--cyan)}
.pkg-box .price{color:var(--muted);margin-top:6px}

.pay-result{text-align:center;max-width:480px}
.pay-icon{width:72px;height:72px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:2rem;margin:0 auto 20px}
.pay-icon.ok{background:rgba(52,211,153,.2);color:var(--ok)}
.pay-icon.fail{background:rgba(248,113,113,.2);color:var(--err)}

.btn-row{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;align-items:center;margin-top:24px}
.btn-row .btn{min-width:120px}
.muted{color:var(--muted);font-size:14px;margin:8px 0}

/* 生成结果页 */
.result-page{position:relative;z-index:5;padding:32px 16px 60px}
.result-card{max-width:680px;margin:0 auto;text-align:center;position:relative;z-index:5}
.result-title{font-family:var(--display);margin-bottom:12px}
.status-line{min-height:1.5em;margin:16px 0}
.result-loader{width:48px;height:48px;border:3px solid rgba(0,229,255,.2);border-top-color:var(--cyan);border-radius:50%;animation:resultSpin .8s linear infinite;margin:16px auto}
@keyframes resultSpin{to{transform:rotate(360deg)}}
.result-img{max-width:100%;border-radius:16px;display:none;margin:16px auto;vertical-align:middle}
.result-actions{position:relative;z-index:6}

/* 后台首页统计卡片 */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(168px,1fr));gap:20px;margin-bottom:28px}
.stat-card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:22px 18px;text-align:center;box-shadow:0 8px 32px rgba(0,0,0,.25)}
.stat-card .num{font-family:var(--display);font-size:1.85rem;font-weight:700;color:var(--cyan);line-height:1.2}
.stat-card .lbl{font-size:13px;color:var(--muted);margin-top:10px}

.site-footer{text-align:center;padding:40px 20px;color:var(--muted);font-size:13px;border-top:1px solid var(--border);margin-top:60px}

/* 后台通用 */
.admin-shell{display:flex;min-height:calc(100vh - var(--nav-h))}
.admin-menu{width:220px;background:var(--bg2);border-right:1px solid var(--border);padding:20px 0;flex-shrink:0}
.admin-menu a{display:block;padding:12px 24px;color:var(--muted);border-left:3px solid transparent;font-size:14px}
.admin-menu a:hover,.admin-menu a.active{color:var(--cyan);background:rgba(0,229,255,.06);border-left-color:var(--cyan)}
.admin-body{flex:1;padding:24px;overflow:auto}
.stat-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:16px;margin-bottom:24px}
.stat-box{padding:20px;border-radius:16px;background:var(--card);border:1px solid var(--border)}
.stat-box .n{font-family:var(--display);font-size:1.8rem;color:var(--cyan)}
.stat-box .l{font-size:13px;color:var(--muted)}
table.data{width:100%;border-collapse:collapse;font-size:14px}
table.data th,table.data td{padding:12px;border-bottom:1px solid var(--border);text-align:left}
table.data th{color:var(--muted);font-weight:600}
.badge{padding:3px 10px;border-radius:6px;font-size:12px}
.badge-ok{background:rgba(52,211,153,.15);color:var(--ok)}
.badge-off{background:rgba(248,113,113,.15);color:var(--err)}

@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}

.admin-layout{display:flex;min-height:calc(100vh - var(--nav-h))}
.admin-sidebar{width:220px;background:var(--bg2);border-right:1px solid var(--border);padding:16px 0;flex-shrink:0}
.admin-sidebar a{display:block;padding:12px 20px;color:var(--muted);border-left:3px solid transparent;font-size:14px}
.admin-sidebar a:hover,.admin-sidebar a.active{color:var(--cyan);background:rgba(0,229,255,.06);border-left-color:var(--cyan)}
.admin-main{flex:1;padding:24px;overflow:auto}
.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:24px;margin-bottom:20px}

@media(max-width:768px){
  .nav-toggle{display:flex;align-items:center;justify-content:center}
  .nav-links{position:fixed;top:var(--nav-h);left:0;right:0;background:rgba(3,5,8,.96);flex-direction:column;padding:16px;border-bottom:1px solid var(--border);display:none}
  .nav-links.open{display:flex}
  .admin-shell,.admin-layout{flex-direction:column}
  .admin-sidebar{width:100%;display:flex;overflow-x:auto}
  .admin-sidebar a{white-space:nowrap;border-left:none;border-bottom:2px solid transparent;padding:10px 14px}
  .admin-sidebar a.active{border-bottom-color:var(--cyan)}
  .admin-menu{width:100%;display:flex;overflow-x:auto;padding:8px}
  .admin-menu a{white-space:nowrap;padding:10px 16px;border-left:none;border-bottom:2px solid transparent}
  .admin-menu a.active{border-bottom-color:var(--cyan);border-left:none}
  table.data{display:block;overflow-x:auto}
  .hero-btns{flex-direction:column;width:100%;max-width:280px}
  .hero-btns .btn{width:100%}
}