/* =====================================================
   LOGIN SG WEB APP - Moderno y oscuro
   ===================================================== */

body {
  margin: 0;
  height: 100vh;
  font-family: "Roboto", Arial, sans-serif;
  background: linear-gradient(160deg, #1f1f1f, #121212);
  color: #ddd;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Contenedor principal */
.login-container {
  width: 100%;
  max-width: 400px;
  padding: 1rem;
}

/* Caja del login */
.login-box {
  background: #1c1c1c;
  border-radius: 12px;
  padding: 2rem;
  text-align: center;
  box-shadow: 0 0 25px rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(255,255,255,0.1);
}

/* Logo */
.logo {
  width: 72px;
  height: 72px;
  object-fit: contain;
  margin-bottom: 1rem;
  filter: drop-shadow(0 0 6px rgba(62, 143, 216, 0.6));
}

/* Título */
.login-box h2 {
  margin: 0;
  font-size: 1.4rem;
  color: #fff;
}

.subtitle {
  font-size: 0.9rem;
  color: #bbb;
  margin-bottom: 1.5rem;
}

/* Campos */
.login-box input {
  width: 100%;
  padding: 0.8rem;
  margin-bottom: 1rem;
  border: none;
  border-radius: 6px;
  background: #2a2a2a;
  color: #fff;
  font-size: 0.95rem;
  transition: background 0.2s, box-shadow 0.2s;
}
.login-box input:focus {
  outline: none;
  background: #333;
  box-shadow: 0 0 0 2px #3E8FD8;
}

/* Botón */
.login-box button {
  width: 100%;
  padding: 0.9rem;
  border: none;
  border-radius: 6px;
  background: #3E8FD8;
  color: white;
  font-size: 1rem;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.3s, transform 0.2s;
}
.login-box button:hover {
  background: #62a9ea;
  transform: scale(1.03);
}

/* Error */
.error {
  margin-top: 1rem;
  color: #ff5252;
  font-size: 0.9rem;
  background: rgba(255, 82, 82, 0.1);
  padding: 0.6rem;
  border-radius: 6px;
}

/* Responsive */
@media (max-width: 480px) {
  .login-box {
    padding: 1.5rem;
  }
}