:root{
  --bg1:#021018; --bg2:#061226;
  --panel:#071827; --glass: rgba(255,255,255,0.03);
  --muted:#88a6bf; --text:#e6f6ff;
  --accent:#39ffb7; --accent2:#59b7ff;
  --radius:12px; --shadow: 0 10px 30px rgba(2,6,23,0.6);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}
*{box-sizing:border-box}
html,body{height:100%;margin:0;background:linear-gradient(180deg,var(--bg1),var(--bg2));color:var(--text);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.top{display:flex;justify-content:space-between;align-items:center;padding:18px 28px;border-bottom:1px solid rgba(255,255,255,0.02);backdrop-filter: blur(6px)}
.brand{display:flex;align-items:center;gap:12px}
.logo{width:56px;height:56px;border-radius:12px;background:linear-gradient(135deg,var(--accent),var(--accent2));display:flex;align-items:center;justify-content:center;color:#022;font-weight:800;font-size:18px;box-shadow:var(--shadow)}
.logo span{color:#052;margin-left:4px}
.brand-title{font-weight:700}
.brand-sub{color:var(--muted);font-size:13px}
.nav{display:flex;gap:12px;align-items:center}
.nav-link{padding:8px 10px;border-radius:10px;color:var(--muted);font-size:14px}
.nav-link:hover{background:rgba(255,255,255,0.02)}
.nav-cta{background:linear-gradient(90deg,var(--accent),var(--accent2));padding:8px 12px;border-radius:10px;color:#042;font-weight:700}

.layout{display:grid;grid-template-columns:260px 1fr 260px;gap:18px;padding:28px;max-width:1200px;margin:20px auto;width:calc(100% - 48px)}
.card{background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));padding:16px;border-radius:var(--radius);border:1px solid rgba(255,255,255,0.02);box-shadow:var(--shadow)}
.main{min-height:520px}
.left,.right{display:flex;flex-direction:column;gap:12px}
.accent{border-left:3px solid var(--accent);}

.muted{color:var(--muted)}
.small{font-size:13px}
.actions{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}
.btn{background:linear-gradient(90deg,var(--accent),var(--accent2));border:0;padding:10px 12px;border-radius:10px;color:#042;cursor:pointer;font-weight:700}
.btn.ghost{background:transparent;border:1px solid rgba(255,255,255,0.04);color:var(--muted);font-weight:600}

.page-title{font-weight:700}
.pages-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.page-tile{padding:12px;border-radius:10px;background:rgba(255,255,255,0.01);cursor:pointer;transition:transform .18s, box-shadow .18s;box-shadow:0 8px 20px rgba(2,6,23,0.45)}
.page-tile:hover{transform:translateY(-6px);box-shadow:0 20px 40px rgba(2,6,23,0.6)}

.msg{padding:12px;border-radius:10px;background:linear-gradient(180deg, rgba(255,255,255,0.01), rgba(255,255,255,0.00));margin-bottom:10px;border:1px solid rgba(255,255,255,0.02)}
.msg .who{font-weight:700}
.msg .time{font-size:12px;color:var(--muted)}
.message-body{margin-top:8px;padding:10px;border-radius:8px;background:linear-gradient(180deg, rgba(255,255,255,0.01), transparent)}

.modal-backdrop{position:fixed;inset:0;background:linear-gradient(180deg, rgba(2,6,23,0.6), rgba(2,6,23,0.85));display:flex;align-items:center;justify-content:center;z-index:100}
.modal{width:480px;background:linear-gradient(180deg,#071722,#04101a);padding:20px;border-radius:12px;border:1px solid rgba(255,255,255,0.03);box-shadow:0 30px 80px rgba(2,6,23,0.8)}
.field{margin-bottom:12px}
label{display:block;color:var(--muted);font-size:13px;margin-bottom:6px}
input,textarea,select{width:100%;padding:10px;border-radius:10px;border:1px solid rgba(255,255,255,0.04);background:transparent;color:var(--text)}
.foot{padding:18px 28px;text-align:center;color:var(--muted);font-size:13px;border-top:1px solid rgba(255,255,255,0.02);margin-top:auto}

/* subtle background graphic */
.bg-graphics{position:fixed;right:-120px;top:-80px;width:640px;height:640px;pointer-events:none;background:radial-gradient(circle at 20% 20%, rgba(89,183,255,0.06), transparent 10%), radial-gradient(circle at 80% 80%, rgba(57,255,183,0.04), transparent 10%);filter:blur(40px);z-index:0}

/* responsive */
@media (max-width:1100px){
  .layout{grid-template-columns:1fr; padding:18px}
  .left,.right{order:2}
  .main{order:1}
}