*{margin:0;padding:0;box-sizing:border-box}
:root{
  --purple:#7c3aed;
  --purple-dark:#5b21b6;
  --pink:#ec4899;
  --text-primary:#1a1a2e;
  --text-muted:#6b7280;
  --border:#e5e7eb;
  --danger:#ef4444;
  --warning:#f59e0b;
  --success:#10b981;
  --radius:12px;
  --shadow-lg:0 20px 50px rgba(124,58,237,.25),0 10px 20px rgba(0,0,0,.1);
}

body{
  font-family:'Sarabun',sans-serif;
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(135deg,#1e1e2e 0%,#5b21b6 60%,#7c3aed 100%);
  color:var(--text-primary);
  padding:20px;
  position:relative;
  overflow:hidden;
}
body::before,body::after{
  content:"";position:absolute;border-radius:50%;filter:blur(80px);opacity:.35;pointer-events:none;
}
body::before{width:420px;height:420px;background:#ec4899;top:-120px;left:-120px;}
body::after{width:520px;height:520px;background:#3b82f6;bottom:-180px;right:-160px;}

.login-card{
  position:relative;width:100%;max-width:420px;background:#fff;
  border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:36px 32px 30px;z-index:1;
  animation:popIn .35s ease;
}
@keyframes popIn{from{opacity:0;transform:translateY(10px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}

.login-logo{text-align:center;margin-bottom:22px;}
.login-logo .badge-circle{
  width:64px;height:64px;border-radius:50%;
  background:linear-gradient(135deg,var(--purple),var(--pink));
  margin:0 auto 14px;display:flex;align-items:center;justify-content:center;
  font-size:28px;color:#fff;box-shadow:0 8px 20px rgba(124,58,237,.4);
}
.login-logo h1{font-size:22px;font-weight:700;color:var(--text-primary);margin-bottom:4px;}
.login-logo p{font-size:13px;color:var(--text-muted);}

.form-group{margin-bottom:14px}
.form-label{display:block;font-size:13px;font-weight:600;color:var(--text-primary);margin-bottom:6px;}
.input-wrap{position:relative;}
.form-control{
  width:100%;padding:11px 14px;border:1.5px solid var(--border);border-radius:8px;
  font-size:14px;font-family:'Sarabun',sans-serif;outline:none;transition:.18s;background:#fafafe;
}
.form-control:focus{border-color:var(--purple);background:#fff;box-shadow:0 0 0 3px rgba(124,58,237,.12);}
.form-control.with-icon{padding-left:42px}
.input-icon{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:16px;pointer-events:none;}
.toggle-pw{position:absolute;right:10px;top:50%;transform:translateY(-50%);background:none;border:none;cursor:pointer;font-size:16px;color:var(--text-muted);padding:4px 6px;border-radius:4px;}
.toggle-pw:hover{background:#f5f5fa}

.btn-login{
  width:100%;padding:12px;background:linear-gradient(135deg,var(--purple),var(--purple-dark));
  color:#fff;border:none;border-radius:8px;font-size:14px;font-weight:700;
  font-family:'Sarabun',sans-serif;cursor:pointer;transition:.2s;margin-top:6px;
  display:flex;align-items:center;justify-content:center;gap:8px;
}
.btn-login:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 8px 20px rgba(124,58,237,.35);}
.btn-login:disabled{opacity:.7;cursor:not-allowed;}

.spinner{
  width:14px;height:14px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;
  border-radius:50%;animation:spin .7s linear infinite;display:inline-block;
}
@keyframes spin{to{transform:rotate(360deg)}}

.error-box{display:none;padding:10px 14px;border-radius:8px;font-size:13px;margin-bottom:14px;border:1px solid transparent;}
.error-box.show{display:block}
.error-box.error{background:#fef2f2;color:#991b1b;border-color:#fecaca;}
.error-box.warning{background:#fffbeb;color:#854d0e;border-color:#fde68a;}

.login-helpers{display:flex;justify-content:space-between;align-items:center;margin-top:14px;font-size:12.5px;color:var(--text-muted);}
.login-footer{text-align:center;margin-top:22px;font-size:12px;color:var(--text-muted);}

@media(max-width:480px){.login-card{padding:28px 22px 24px}.login-logo h1{font-size:19px}}