* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Segoe UI', sans-serif;
  background: #0f172a;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-card {
  background: #1e293b;
  border-radius: 16px;
  padding: 48px 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 25px 50px rgba(0,0,0,0.4);
}

.login-logo {
  text-align: center;
  margin-bottom: 32px;
}

.login-logo img {
  width: 56px;
  margin-bottom: 12px;
}

.login-logo h1 {
  color: #f1f5f9;
  font-size: 22px;
  font-weight: 600;
}

.login-logo p {
  color: #64748b;
  font-size: 14px;
  margin-top: 4px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  color: #94a3b8;
  font-size: 13px;
  margin-bottom: 8px;
  font-weight: 500;
}

.form-group input {
  width: 100%;
  padding: 12px 16px;
  background: #0f172a;
  border: 1px solid #334155;
  border-radius: 8px;
  color: #f1f5f9;
  font-size: 15px;
  transition: border-color 0.2s;
  outline: none;
}

.form-group input:focus {
  border-color: #25d366;
}

.btn-login {
  width: 100%;
  padding: 13px;
  background: #25d366;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
  margin-top: 8px;
}

.btn-login:hover { background: #1ebe59; }

.error-msg {
  background: #7f1d1d;
  color: #fca5a5;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
  margin-bottom: 16px;
  display: none;
}