/* ============================================================
   ESTILO BASE (ESCRITORIO + TABLET)
   ============================================================ */

body {
  font-family: "Segoe UI", sans-serif;
  background: linear-gradient(135deg, #2f6da1, #0b2c49);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  margin: 0;
  padding: 0;
}

.login-container {
  max-width: 420px;
  width: 100%;
  padding: 40px;
  border-radius: 14px;
  background: rgba(255,255,255,0.07);
  box-shadow: 0 6px 25px rgba(0,0,0,0.35);
  text-align: center;
  backdrop-filter: blur(6px);
}

h1 {
  font-size: 26px;
  margin-bottom: 10px;
}

p {
  color: #cfd6e2;
  font-size: 15px;
  margin-bottom: 25px;
}

/* ==============================
   CAMPO DE EMAIL
   ============================== */
.input-group {
  position: relative;
  width: 100%;
  margin-bottom: 18px;
  min-height: 70px;
}

input[type="email"] {
  width: 100%;
  padding: 14px 18px 14px 46px;
  border: 1px solid #8ca9c9;
  border-radius: 8px;
  background: rgba(255,255,255,0.18);
  color: #fff;
  font-size: 15px;
  outline: none;
  box-sizing: border-box;
}

input[type="email"]:focus {
  border-color: #3b82f6;
  box-shadow: 0 0 8px rgba(59,130,246,0.6);
}

.icono-email {
  position: absolute;
  left: 14px;
  top: 14px;
  width: 22px;
  height: 22px;
  fill: #ffffff;
  opacity: 0.85;
  pointer-events: none;
}

#email-msg {
  font-size: 13px;
  text-align: left;
  padding-left: 6px;
  height: 18px;
  line-height: 18px;
  margin-top: 6px;
}
.valid { color: #00ff99; }
.invalid { color: #ff4d4d; }

/* ==============================
   BOTÓN
   ============================== */
button {
  background-color: #007bff;
  color: white;
  border: none;
  border-radius: 8px;
  padding: 12px;
  width: 100%;
  font-size: 16px;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
}
button:hover {
  background-color: #0056b3;
  transform: scale(1.02);
}

/* Link volver */
.back-link {
  color: #b2b2ff;
  display: inline-block;
  margin-top: 12px;
  text-decoration: none;
}
.back-link:hover {
  text-decoration: underline;
}

/* mensajes */
.msg-success { color: #00ff99; text-align: center; }
.msg-error { color: #ff4d4d; text-align: center; }
.msg-warning { color: #ffcc00; text-align: center; }

/* ============================================================
   MODO RESPONSIVO — PARA CELULARES REALES
   ============================================================ */
@media (max-width: 768px) {
  body {
    padding: 20px;
    height: auto;
    min-height: 100vh;
    display: flex;
    justify-content: center;  /* ✔ centrado horizontal */
    align-items: center;      /* ✔ centrado vertical */
  }

  .login-container {
    width: 100%;
    max-width: 380px;
    margin: 0 auto; 
  }
}

  h1 {
    font-size: 24px;
  }

  p {
    font-size: 14px;
  }

  input[type="email"] {
    font-size: 16px;
    height: 48px;
    padding-left: 46px;
  }

  button {
    height: 48px;
    font-size: 16px;
  }

  .icono-email {
    width: 20px;
    height: 20px;
    top: 50%;
    transform: translateY(-50%);
  }