/* =================== RESET Y FUENTE =================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* =================== BODY Y FONDO =================== */
body {
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 1rem;
}

/* =================== CONTENEDOR PRINCIPAL =================== */
.container {
  width: 100%;
  max-width: 500px;
  position: relative;
  z-index: 10;
}

/* =================== CARD =================== */
.card {
  width: 100%;
  position: relative;
  min-height: 400px;
}

/* =================== CARA DE LA CARD =================== */
.card-face {
  width: 100%;
  padding: 2.5rem 2rem;
  border-radius: 40px;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  color: #f8f8f8;
}

/* =================== CONTENIDO DEL FORMULARIO =================== */
.form-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* =================== LOGO =================== */
.logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.logo img {
  width: 80px;
  height: auto;
}

/* =================== TÍTULOS =================== */
.titulo-login {
  font-size: 1.6rem;
  font-weight: 700;
  background: linear-gradient(135deg, #fff, #f0e7ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin: 0;
}

/* =================== TEXTO CENTRAL =================== */
.text-center {
  text-align: center;
  color: rgba(255, 255, 255, 0.95);
  font-size: 1rem;
  line-height: 1.6;
  padding: 0 1rem;
}

.text-center b {
  color: #ffffff;
  font-weight: 600;
}

/* =================== FORMULARIO =================== */
form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* =================== BOTÓN PRINCIPAL =================== */
.btn {
  width: 100%;
  padding: 1rem 1.5rem;
  border: none;
  border-radius: 60px;
  font-weight: 600;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  margin-top: 0.5rem;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px -8px rgba(0, 0, 0, 0.4);
}

.btn:active {
  transform: translateY(0);
}

/* =================== ENLACES =================== */
.links {
  text-align: center;
  margin-top: 1rem;
}

.links a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.3s ease;
}

.links a:hover {
  color: #ffffff;
  text-decoration: underline;
}

/* =================== RESPONSIVE =================== */

/* Tablets Landscape (768px - 991px) */
@media (min-width: 768px) and (max-width: 991px) {
  .container {
    max-width: 450px;
  }

  .card-face {
    padding: 2rem 1.8rem;
    border-radius: 35px;
  }

  .logo img {
    width: 70px;
  }

  .titulo-login {
    font-size: 1.4rem;
  }

  .text-center {
    font-size: 0.95rem;
  }

  .btn {
    padding: 0.9rem 1.3rem;
    font-size: 0.95rem;
  }
}

/* Tablets Portrait (576px - 767px) */
@media (min-width: 576px) and (max-width: 767px) {
  .container {
    max-width: 400px;
  }

  .card-face {
    padding: 1.8rem 1.5rem;
    border-radius: 30px;
  }

  .logo img {
    width: 65px;
  }

  .titulo-login {
    font-size: 1.3rem;
  }

  .text-center {
    font-size: 0.9rem;
    padding: 0 0.5rem;
  }

  .btn {
    padding: 0.85rem 1.2rem;
    font-size: 0.9rem;
  }

  .links a {
    font-size: 0.85rem;
  }
}

/* Mobile (400px - 575px) */
@media (min-width: 400px) and (max-width: 575px) {
  .container {
    max-width: 100%;
    padding: 0.5rem;
  }

  body {
    padding: 0.5rem;
  }

  .card {
    min-height: 380px;
  }

  .card-face {
    padding: 1.5rem 1.3rem;
    border-radius: 25px;
  }

  .logo {
    gap: 0.8rem;
    margin-bottom: 0.8rem;
  }

  .logo img {
    width: 60px;
  }

  .titulo-login {
    font-size: 1.2rem;
  }

  .text-center {
    font-size: 0.85rem;
    padding: 0;
  }

  .btn {
    padding: 0.8rem 1rem;
    font-size: 0.85rem;
    border-radius: 50px;
  }

  .links {
    margin-top: 0.8rem;
  }

  .links a {
    font-size: 0.8rem;
  }

  .form-content {
    gap: 1.2rem;
  }
}

/* Small Mobile (< 400px) */
@media (max-width: 399px) {
  .container {
    max-width: 100%;
    padding: 0.3rem;
  }

  body {
    padding: 0.3rem;
  }

  .card {
    min-height: 360px;
  }

  .card-face {
    padding: 1.3rem 1rem;
    border-radius: 20px;
    box-shadow: 0 15px 35px -8px rgba(0, 0, 0, 0.3);
  }

  .logo {
    gap: 0.7rem;
    margin-bottom: 0.7rem;
  }

  .logo img {
    width: 55px;
  }

  .titulo-login {
    font-size: 1.1rem;
  }

  .text-center {
    font-size: 0.8rem;
    padding: 0;
    line-height: 1.5;
  }

  .btn {
    padding: 0.75rem 0.9rem;
    font-size: 0.8rem;
    border-radius: 45px;
  }

  .links {
    margin-top: 0.7rem;
  }

  .links a {
    font-size: 0.75rem;
  }

  .form-content {
    gap: 1rem;
  }
}