:root{
  --bg-1: #a9ee08; /* deep navy */
  --bg-2: #08203a; /* gradient */
  --card: #ffffff;
  --primary: #0066cc;
  --accent: #ff8a00;
  --muted: #6b7280;
  --radius: 10px;
  --max-width: 980px;
}

/* Reset and base */
*{box-sizing:border-box}
html,body{height:100%}
html{
  font-family: 'Open Sans', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
body{
  margin:0;
  background: linear-gradient(180deg, var(--bg-1) 0%, var(--bg-2) 100%);
  color:#0b1220;
  display:flex;
  justify-content:center;
  padding:36px 18px;
}

.site-container{
  width:100%;
  max-width:var(--max-width);
  background: linear-gradient(180deg, rgba(16, 220, 43, 0.02), rgba(255,255,255,0.01));
  border-radius:var(--radius);
  padding:28px;
  box-shadow: 0 8px 30px rgba(2,6,23,0.6);
}

header{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
h1{font-size:1.6rem;margin:0;color:var(--card);letter-spacing:0.2px}

.main-nav{display:flex;gap:12px;align-items:center}
.main-nav a{color:rgba(255,255,255,0.92);text-decoration:none;padding:8px 12px;border-radius:7px;transition:all .18s ease;font-weight:600}
.main-nav a:hover{background:rgba(255,255,255,0.06);transform:translateY(-1px)}

#user-area{color:rgba(255,255,255,0.88);margin-left:12px;font-weight:600}

main{display:flex;gap:24px;align-items:flex-start}
section{flex:1}
img{max-width:260px;border-radius:8px;display:block;margin:6px 0 0}

.card{
  background: rgba(255,255,255,0.98);
  padding:18px;border-radius:12px;box-shadow:0 6px 18px rgba(2,6,23,0.12);
}

.form-card{max-width:420px;margin:0 auto;padding:18px;background:var(--card);border-radius:10px;}
.form-card h2{margin:0 0 10px 0;color:var(--primary)}
.form-row{margin-bottom:12px}
.form-row label{display:block;margin-bottom:6px;color:var(--muted);font-size:0.95rem}
.form-row input{width:100%;padding:10px 12px;border-radius:8px;border:1px solid #e6e9ee;background:#fbfdff;transition:box-shadow .18s ease,border-color .12s ease}
.form-row input:focus{outline:none;border-color:var(--primary);box-shadow:0 6px 18px rgba(0,102,204,0.12)}
.form-actions{text-align:right}
.btn{display:inline-block;background:var(--primary);color:#fff;padding:10px 14px;border-radius:8px;border:none;cursor:pointer;transition:transform .12s ease,box-shadow .12s ease}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,102,204,0.18)}
.btn.secondary{background:#f3f4f6;color:#111;border:1px solid #e5e7eb}

.actions{margin-top:12px}

footer{margin-top:22px;color:rgba(255,255,255,0.65);font-size:0.9rem;text-align:center}

@media (max-width:900px){
  main{flex-direction:column}
  img{max-width:100%;margin:12px 0 0}
  header{flex-direction:column;align-items:flex-start;gap:12px}
}