:root{
  --primary:#0078D4;
  --primary-dark:#005a9e;
  --bg:#f2f7fb;
  --card:#fff;
  --text:#1f2937;
  --muted:#6b7280;
  --danger:#dc2626;
}

*{box-sizing:border-box}
html,body{height:100%}

body{
  margin:0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: linear-gradient(135deg, var(--primary), #00A6ED);
  color:var(--text);
  display:flex;
  align-items:center;
  justify-content:center;
  padding:24px;
}

.login-wrap{
  width:100%;
  max-width:380px;
}

.login-card{
  background:var(--card);
  border-radius:16px;
  box-shadow:0 10px 30px rgba(0,0,0,.18);
  padding:28px 28px 20px;
}

.brand{
  text-align:center;
  margin-bottom:18px;
}
.brand img{
  height:48px;
  margin-bottom:8px;
}
.brand h1{
  margin:0;
  font-size:22px;
  color:var(--primary);
}
.brand .subtitle{
  margin:4px 0 0;
  font-size:13px;
  color:var(--muted);
}

.field{
  margin:10px 0 12px;
}
.field label{
  display:block;
  font-size:13px;
  color:#374151;
  margin-bottom:6px;
}
.field input{
  width:100%;
  padding:10px 12px;
  border:1px solid #e5e7eb;
  border-radius:8px;
  font-size:15px;
  outline:none;
}
.field input:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(0,120,212,.15);
}

.btn{
  width:100%;
  margin-top:4px;
  padding:11px 14px;
  background:var(--primary);
  color:#fff;
  border:none;
  border-radius:8px;
  font-size:15px;
  cursor:pointer;
  transition:background .15s ease;
}
.btn:hover{ background:var(--primary-dark); }

.error{
  background:#fee2e2;
  color:var(--danger);
  border:1px solid #fecaca;
  padding:10px 12px;
  border-radius:8px;
  font-size:13px;
  margin:4px 0 10px;
}

.footer{
  text-align:center;
  color:var(--muted);
  font-size:12px;
  margin-top:14px;
}