:root {
  --verde-encina: #214328;
  --dorado-villamayor: #b58c38;
  --fondo: #f6f3ed;
  --texto: #1c241b;
  --borde: #e2ddd3;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--fondo);
  color: var(--texto);
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.login-card {
  background: #ffffff;
  padding: 2.5rem;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  width: 100%;
  max-width: 350px;
  border: 1px solid var(--borde);
  text-align: center;
}

.login-card h2 {
  color: var(--verde-encina);
  margin-top: 0;
  margin-bottom: 1.5rem;
  font-size: 1.4rem;
}

.form-group {
  text-align: left;
  margin-bottom: 1.2rem;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: bold;
  margin-bottom: 0.5rem;
  color: var(--verde-encina);
}

.form-group input {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--borde);
  border-radius: 6px;
  box-sizing: border-box;
  font-size: 1rem;
}

.form-group input:focus {
  outline: none;
  border-color: var(--dorado-villamayor);
  box-shadow: 0 0 0 2px rgba(181, 140, 56, 0.2);
}

.btn {
  background-color: var(--verde-encina);
  color: #ffffff;
  border: none;
  padding: 0.85rem;
  width: 100%;
  border-radius: 6px;
  font-weight: bold;
  font-size: 1rem;
  cursor: pointer;
  margin-top: 1rem;
  transition: background-color 0.2s;
}

.btn:hover {
  background-color: #162d1b;
}

.error-message {
  color: #d9534f;
  background-color: #fdf7f7;
  border: 1px solid #d9534f;
  padding: 0.75rem;
  border-radius: 6px;
  margin-bottom: 1rem;
  font-size: 0.9rem;
  text-align: left;
}