:root{
  --os-bg:#050a14; --os-panel:#0a1224; --os-border:rgba(87,255,176,.25);
  --os-accent:#57ffb0; --os-accent2:#3ce7ff; --os-warn:#ffb23c; --os-danger:#ff5d5d;
  --os-text:#eaf6ff; --os-muted:#9fb4d6;
}
*{box-sizing:border-box;}
body{
  margin:0; min-height:100vh; font-family:'Segoe UI',system-ui,sans-serif;
  background:radial-gradient(circle at 15% 10%, rgba(87,255,176,.08), transparent 40%),
             radial-gradient(circle at 85% 90%, rgba(60,231,255,.08), transparent 40%),
             linear-gradient(180deg,var(--os-bg),#020408);
  color:var(--os-text);
}
a{color:inherit;}
.os-topbar{
  display:flex; justify-content:space-between; align-items:center;
  padding:14px 24px; border-bottom:1px solid var(--os-border);
  background:rgba(10,18,36,.7);
}
.os-topbar .brand{ font-weight:700; letter-spacing:1px; color:var(--os-accent); text-decoration:none; text-shadow:0 0 12px rgba(87,255,176,.4); animation:osBrandPulse 4s ease-in-out infinite; }
@keyframes osBrandPulse{
  0%,100%{ text-shadow:0 0 12px rgba(87,255,176,.4); }
  50%{ text-shadow:0 0 20px rgba(60,231,255,.6); }
}
.os-topbar .back{ color:var(--os-muted); text-decoration:none; font-size:.85rem; }
.os-nav{
  display:flex; gap:6px; flex-wrap:wrap; padding:12px 24px;
  border-bottom:1px solid var(--os-border);
}
.os-nav a{
  padding:8px 14px; border-radius:8px; text-decoration:none; font-size:.85rem;
  color:var(--os-muted); border:1px solid transparent; transition:.15s;
}
.os-nav a:hover{ background:rgba(87,255,176,.08); color:var(--os-text); }
.os-nav a.active{ background:rgba(87,255,176,.15); color:var(--os-accent); border-color:var(--os-border); }
.os-resbar{
  display:flex; gap:20px; flex-wrap:wrap; padding:12px 24px;
  background:rgba(0,0,0,.25); font-size:.88rem;
}
.os-resbar .item{ display:flex; align-items:center; gap:6px; }
.os-resbar .val{ font-weight:700; color:var(--os-accent); }
.os-resbar .rate{ color:var(--os-muted); font-size:.78rem; }
.os-main{ max-width:1000px; margin:0 auto; padding:24px; }
.os-panel{
  background:linear-gradient(160deg,rgba(255,255,255,.04),rgba(255,255,255,.01));
  border:1px solid var(--os-border); border-radius:12px; padding:18px 20px; margin-bottom:18px;
  box-shadow:0 4px 24px rgba(0,0,0,.35);
  transition:border-color .3s ease;
  overflow-x:auto;
}
.os-panel:hover{ border-color:rgba(87,255,176,.45); }
.os-panel h2{ margin:0 0 14px; font-size:1.1rem; color:var(--os-accent2); text-shadow:0 0 10px rgba(60,231,255,.3); }
.os-flash{
  background:rgba(87,255,176,.1); border:1px solid var(--os-accent); border-radius:8px;
  padding:10px 14px; margin-bottom:16px; font-size:.9rem; color:var(--os-accent);
}
.os-error{
  background:rgba(255,93,93,.1); border:1px solid var(--os-danger); border-radius:8px;
  padding:10px 14px; margin-bottom:16px; font-size:.9rem; color:var(--os-danger);
}
.os-grid{ display:grid; grid-template-columns:repeat(auto-fill,minmax(260px,1fr)); gap:14px; }
.os-card{
  background:rgba(255,255,255,.03); border:1px solid rgba(255,255,255,.08); border-radius:10px;
  padding:14px 16px;
  transition:transform .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.os-card:hover{
  transform:translateY(-2px);
  border-color:rgba(87,255,176,.4);
  box-shadow:0 6px 20px rgba(87,255,176,.1);
}
.os-card h3{ margin:0 0 6px; font-size:.98rem; }
.os-card .level{ color:var(--os-accent); font-weight:700; }
.os-card .cost{ font-size:.8rem; color:var(--os-muted); margin:8px 0; line-height:1.5; }
.os-btn{
  padding:8px 16px; border-radius:8px; border:1px solid var(--os-accent);
  background:rgba(87,255,176,.1); color:var(--os-text); cursor:pointer; font-size:.85rem;
  transition:.15s;
}
.os-btn:hover{ background:rgba(87,255,176,.25); }
.os-btn:disabled{ opacity:.4; cursor:not-allowed; }
.os-btn.secondary{ border-color:var(--os-accent2); background:rgba(60,231,255,.08); }
.os-btn.secondary:hover{ background:rgba(60,231,255,.2); }
.os-btn.danger{ border-color:var(--os-danger); background:rgba(255,93,93,.08); }
.os-progress{
  height:8px; border-radius:4px; background:rgba(255,255,255,.08); overflow:hidden; margin-top:8px;
}
.os-progress .bar{ height:100%; background:linear-gradient(90deg,var(--os-accent),var(--os-accent2)); }
.os-queue-item{
  display:flex; justify-content:space-between; align-items:center;
  padding:8px 12px; border-radius:8px; background:rgba(255,255,255,.03); margin-bottom:8px; font-size:.85rem;
}
input[type=text], input[type=password], input[type=number], select{
  padding:9px 12px; border-radius:8px; border:1px solid #294066; background:#050814;
  color:var(--os-text); font-size:.95rem; width:100%;
}
.os-form-row{ display:flex; gap:10px; align-items:center; margin-bottom:10px; flex-wrap:wrap; }
.os-form-row label{ width:160px; font-size:.85rem; color:var(--os-muted); }
.os-login-wrap{
  max-width:380px; margin:80px auto; padding:0 20px; text-align:center;
}
.os-login-wrap h1{ color:var(--os-accent); letter-spacing:1px; }
.os-login-wrap .os-panel{ text-align:left; }
.os-ship-row{
  display:flex; justify-content:space-between; align-items:center; padding:10px 0;
  border-bottom:1px solid rgba(255,255,255,.06);
}
table.os-table{ width:100%; border-collapse:collapse; font-size:.85rem; min-width:480px; }
table.os-table th, table.os-table td{ text-align:left; padding:8px 10px; border-bottom:1px solid rgba(255,255,255,.06); }
table.os-table th{ color:var(--os-muted); font-weight:600; }
.os-badge{ display:inline-block; padding:2px 8px; border-radius:99px; font-size:.72rem; }
.os-badge.win{ background:rgba(87,255,176,.15); color:var(--os-accent); }
.os-badge.lose{ background:rgba(255,93,93,.15); color:var(--os-danger); }
.os-badge.draw{ background:rgba(255,178,60,.15); color:var(--os-warn); }