:root {
  --primary: #5E3023;
  --secondary: #8B5A2B;
  --accent: #ffba3a;
  --light: #F5F5DC;
  --dark: #2A2A2A;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}

body {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.contenedor {
  background: rgba(245, 245, 220, 0.2);
  border: 2px solid var(--light);
  border-radius: 20px;
  backdrop-filter: blur(20px);
  width: 450px;
  padding: 40px;
  box-shadow: 0 0 20px rgba(0,0,0,0.2);
}

.formulario h2 {
  color: var(--light);
  text-align: center;
  margin-bottom: 30px;
}

.input-contenedor {
  position: relative;
  margin-bottom: 25px;
}

.input-contenedor input {
  width: 100%;
  padding: 14px 40px 14px 12px;
  border: none;
  border-radius: 8px;
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--light);
  font-size: 1rem;
  transition: 0.3s;
}

.input-contenedor input:focus {
  outline: 2px solid var(--accent);
  background-color: rgba(255, 255, 255, 0.2);
}

.input-contenedor label {
  position: absolute;
  top: 50%;
  left: 12px;
  transform: translateY(-50%);
  color: var(--light);
  pointer-events: none;
  transition: 0.3s ease;
}

.input-contenedor input:focus ~ label,
.input-contenedor input:valid ~ label {
  top: -10px;
  left: 8px;
  font-size: 0.75rem;
  color: var(--accent);
  background: rgba(94, 48, 35, 0.9);
  padding: 0 4px;
  border-radius: 4px;
}

.input-contenedor i {
  position: absolute;
  top: 50%;
  right: 12px;
  transform: translateY(-50%);
  color: var(--light);
  font-size: 1.2rem;
}

button {
  width: 100%;
  padding: 12px;
  border: none;
  border-radius: 40px;
  background-color: var(--accent);
  color: var(--dark);
  font-weight: bold;
  font-size: 1rem;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

button:hover {
  background-color: #e0a530;
}

.registrar {
  text-align: center;
  margin-top: 20px;
}

.registrar a {
  color: var(--light);
  font-weight: bold;
  text-decoration: none;
  transition: 0.3s;
}

.registrar a:hover {
  color: var(--accent);
  text-decoration: underline;
}