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

body {
  font-family: 'Inter', Arial, sans-serif;
  background: linear-gradient(135deg, #0f172a, #1e293b);
  color: #f1f5f9;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.login-card {
  background: rgba(15, 23, 42, 0.95);
  padding: 2.5rem 2rem;
  border-radius: 16px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.4);
  width: 380px;
  max-width: 90%;
  text-align: center;
  transition: transform 0.3s ease;
}

.login-card:hover {
  transform: translateY(-4px);
}

h1 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  color: #22d3ee;
}

p.subtle {
  font-size: 0.9rem;
  color: #94a3b8;
  margin-bottom: 1.5rem;
}

input {
  width: 100%;
  padding: 12px 14px;
  margin-bottom: 14px;
  border-radius: 10px;
  border: 1px solid #334155;
  background-color: #1e293b;
  color: #f1f5f9;
  font-size: 1rem;
  transition: border-color 0.3s, box-shadow 0.3s;
}

input:focus {
  outline: none;
  border-color: #22d3ee;
  box-shadow: 0 0 8px rgba(34,211,238,0.4);
}

button {
  width: 100%;
  padding: 12px;
  border-radius: 12px;
  border: none;
  font-weight: 700;
  font-size: 1rem;
  background: linear-gradient(90deg, #22d3ee, #8b5cf6);
  color: #0f172a;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.3s;
}

button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(139,92,246,0.3);
}

#message {
  margin-top: 14px;
  font-size: 0.9rem;
  min-height: 1.2em;
}

.error {
  color: #f87171;
}   /* rood */

.success {
  color: #4ade80;
} /* groen */

.footer {
  margin-top: 18px;
  font-size: 0.8rem;
  color: #94a3b8;
}

.footer a {
  color: #22d3ee;
}