html, body {
  margin: 0;
  padding: 0;
  font-family: "Segoe UI", Roboto, Arial, sans-serif;
  background: #f5f7fa;
  color: #2c3e50;
  height: 100%;
  width: 100%;
  overflow-x: hidden;
}

/* ====== ESTILO GENERAL ====== */
#sidebar {
  display: none !important;
}

.sidebar-title {
  display: none !important;
}

/* Top-bar modificado */
.top-bar {
  justify-content: space-between !important;
}

.top-bar .block-header {
  margin-left: 2%;
  width: 98%;
  text-align: left !important;
  width: auto !important;
  padding-left: 0 !important;
  flex: 1 !important;
}

.user-info {
  display: none !important;
}

.content {
  margin-left: 0 !important;
  margin-right: 0 !important;
  padding-left: 0 !important;
  padding-right: 0 !important;
  width: 100% !important;
  max-width: 100% !important;
  padding-top: 2% !important;
  min-height: calc(100vh - 60px);
  box-sizing: border-box;
}

/* Botón Registrar en top-bar */
.top-bar .register-btn {
  background-color: #28a745;
  color: white;
  border: none;
  border-radius: 4px;
  padding: 0.5rem 1.5rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease;
  font-size: 0.9rem;
}

.top-bar .register-btn:hover {
  background-color: #218838;
}

/* ====== LAYOUT DE DOS COLUMNAS ====== */
.login-layout {
  display: flex;
  padding: 1rem 2%;
  width: 100%;
  margin: 0 auto;
  gap: 3rem;
  align-items: center;
  position: relative;
  box-sizing: border-box;
}

/* ====== COLUMNA IZQUIERDA: Información del sistema ====== */
.system-info {
  flex: 1;
  padding: 2rem;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  border: 1px solid #e0e0e0;
  min-height: 600px;
  margin-bottom: 2rem;
}

.system-title {
  text-align: center;
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 2px solid #f0f0f0;
}

.system-title h1 {
  font-size: 28px;
  font-weight: 800;
  color: #2c3e50;
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.system-title h2 {
  font-size: 22px;
  font-weight: 600;
  color: #3498db;
  margin: 0.5rem 0;
  font-style: italic;
}

.system-title h3 {
  font-size: 32px;
  font-weight: 900;
  color: #2c3e50;
  margin-top: 0.5rem;
  letter-spacing: 1px;
}

.system-description {
  line-height: 1.6;
  color: #444;
}

.system-description > p {
  font-size: 1.05rem;
  margin-bottom: 2.5rem;
  color: #555;
  text-align: justify;
}

.features {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.feature {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.feature-icon {
  font-size: 1.8rem;
  background: #f8f9fa;
  border-radius: 8px;
  padding: 0.5rem;
  min-width: 50px;
  text-align: center;
  border: 1px solid #eaeaea;
}

.feature-text h4 {
  margin: 0 0 0.3rem 0;
  color: #2c3e50;
  font-size: 1.1rem;
}

.feature-text p {
  margin: 0;
  color: #666;
  font-size: 0.95rem;
  line-height: 1.5;
}

.system-benefits {
  background: #f8f9fa;
  padding: 1.5rem;
  border-radius: 8px;
  border-left: 4px solid #3498db;
}

.system-benefits h4 {
  margin-top: 0;
  color: #2c3e50;
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.system-benefits ul {
  padding-left: 1.5rem;
  margin: 0;
}

.system-benefits li {
  margin-bottom: 0.5rem;
  color: #555;
}

.system-benefits li:last-child {
  margin-bottom: 0;
}

.system-additional-content {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid #eaeaea;
}

.system-additional-content h4 {
  color: #2c3e50;
  margin-bottom: 1rem;
}

.system-additional-content p {
  color: #666;
  line-height: 1.6;
  margin-bottom: 1rem;
}

/* ====== COLUMNA DERECHA: Formulario de login ====== */
.login-container {
  flex: 0 0 min(420px, 100%);
  position: sticky;
  top: 20px;
  align-self: flex-start;
  height: fit-content;
}

.login-card {
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  padding: 2rem;
  width: 100%;
  margin-top: 25%;
  border: 1px solid #e0e0e0;
  position: relative;
  box-sizing: border-box;
}

.login-header {
  text-align: center;
  margin-bottom: 1.8rem;
}

.login-header h2 {
  font-size: 24px;
  font-weight: 900;
  margin: 0 0 0.5rem 0;
  color: #2c3e50;
  text-align: center;
  width: 100%;
}

/* ====== FORMULARIO DE LOGIN ====== */
.login-form {
  width: 100%;
}

.form-group {
  margin-bottom: 1.5rem;
  width: 100%;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: #333;
  margin-bottom: 0.5rem;
  text-align: left;
}

.form-group input {
  width: 100%;
  padding: 0.7rem 0.8rem;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 0.9rem;
  box-sizing: border-box;
  background-color: #fff;
  color: #333;
  transition: border-color 0.2s ease;
}

.form-group input:focus {
  outline: none;
  border-color: #007bff;
  box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.25);
}

/* ====== BOTONES ====== */
.form-actions {
  display: flex;
  justify-content: center;
  width: 100%;
  margin-top: 1.5rem;
}

.btn {
  border: none;
  border-radius: 6px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  padding: 0.7rem 2rem;
  min-width: 160px;
}

.btn-login {
  background-color: #007bff;
  color: #fff;
}

.btn-login:hover {
  background-color: #0056b3;
  transform: translateY(-1px);
}

/* ====== MENSAJES DE ERROR ====== */
.error-msg {
  color: #b22222;
  font-size: 0.85rem;
  margin: 0 0 1.5rem 0;
  padding: 0.8rem;
  text-align: center;
  font-weight: 500;
  background-color: #ffeaea;
  border: 1px solid #ffcccc;
  border-radius: 4px;
}

.field-error {
  color: #b22222;
  font-size: 0.8rem;
  margin: 0.3rem 0 0 0;
  padding: 0;
  text-align: left;
  font-weight: 500;
}

/* ====== FOOTER DEL LOGIN ====== */
.login-footer {
  margin-top: 1.5rem;
  text-align: center;
  padding-top: 1rem;
  border-top: 1px solid #eaeaea;
}

.login-footer p {
  font-size: 0.8rem;
  color: #666;
  margin: 0;
}

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

/* ── Tablets grandes (992px - 1199px) ── */
@media (min-width: 992px) and (max-width: 1199px) {
  .login-layout {
    gap: 2rem;
    padding: 1rem 3%;
  }

  .system-info {
    padding: 1.5rem;
  }

  .system-title h1 { font-size: 24px; }
  .system-title h3 { font-size: 28px; }

  .login-container {
    flex: 0 0 380px;
    top: 15px;
  }
}

/* ── Tablets (768px - 991px): layout pasa a columna ── */
@media (min-width: 768px) and (max-width: 991px) {
  .content {
    padding-left: 0 !important;
    padding-right: 0 !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
  }

  .login-layout {
    flex-direction: column;
    align-items: stretch;
    gap: 2rem;
    padding: 1.5rem 5%;
    width: 100%;
    box-sizing: border-box;
  }

  .system-info {
    width: 100%;
    max-width: 100%;
    min-height: auto;
    margin: 0;
    box-sizing: border-box;
  }

  .login-container {
    flex: 0 0 auto;
    width: 100%;
    max-width: 100%;
    margin: 0;
    position: static;
    box-sizing: border-box;
  }

  .login-card {
    margin-top: 0;
    width: 100%;
    box-sizing: border-box;
  }

  .system-title h1 { font-size: 24px; }
  .system-title h2 { font-size: 20px; }
  .system-title h3 { font-size: 26px; }
}

/* ── Tablets pequeñas (600px - 767px) ── */
@media (min-width: 600px) and (max-width: 767px) {
  .content {
    padding-left: 0 !important;
    padding-right: 0 !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
  }

  .login-layout {
    flex-direction: column;
    align-items: stretch;
    gap: 1.5rem;
    padding: 1rem 4%;
    width: 100%;
    box-sizing: border-box;
  }

  .system-info {
    width: 100%;
    max-width: 100%;
    min-height: auto;
    padding: 1.2rem;
    margin: 0;
    box-sizing: border-box;
  }

  .login-container {
    flex: 0 0 auto;
    width: 100%;
    max-width: 100%;
    margin: 0;
    position: static;
    box-sizing: border-box;
  }

  .login-card {
    margin-top: 0;
    width: 100%;
    box-sizing: border-box;
  }

  .system-title h1 { font-size: 22px; }
  .system-title h2 { font-size: 18px; }
  .system-title h3 { font-size: 24px; }
  .login-header h2 { font-size: 20px; }

  .btn {
    font-size: 0.9rem;
    padding: 0.6rem 1.8rem;
    min-width: 140px;
  }
}

/* ── Móviles (480px - 599px) ── */
@media (min-width: 480px) and (max-width: 599px) {
  .content {
    padding-left: 0 !important;
    padding-right: 0 !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
  }

  .login-layout {
    flex-direction: column;
    align-items: stretch;
    padding: 1rem 3%;
    gap: 1.5rem;
    width: 100%;
    box-sizing: border-box;
  }

  .system-info {
    width: 100%;
    max-width: 100%;
    min-height: auto;
    padding: 1rem;
    margin: 0;
    box-sizing: border-box;
  }

  .login-container {
    flex: 0 0 auto;
    width: 100%;
    max-width: 100%;
    margin: 0;
    position: static;
    box-sizing: border-box;
  }

  .login-card {
    margin-top: 0;
    width: 100%;
    box-sizing: border-box;
  }

  .system-title {
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
  }

  .system-title h1 { font-size: 20px; }
  .system-title h2 { font-size: 16px; }
  .system-title h3 { font-size: 22px; }

  .system-description > p {
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
  }

  .feature-icon {
    font-size: 1.5rem;
    min-width: 40px;
  }

  .feature-text h4 { font-size: 1rem; }
  .feature-text p  { font-size: 0.9rem; }

  .login-header h2 { font-size: 18px; }

  .form-group input { padding: 0.6rem 0.7rem; }

  .btn {
    width: 100%;
    min-width: auto;
  }
}

/* ── Móviles pequeños (< 480px) ── */
@media (max-width: 479px) {
  .content {
    padding-left: 0 !important;
    padding-right: 0 !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
  }

  .login-layout {
    flex-direction: column;
    align-items: stretch;
    padding: 0.5rem 3%;
    gap: 1rem;
    margin-top: 0.5rem;
    width: 100%;
    box-sizing: border-box;
  }

  .system-info {
    width: 100%;
    max-width: 100%;
    min-height: auto;
    padding: 1rem;
    margin: 0;
    box-sizing: border-box;
  }

  .login-container {
    flex: 0 0 auto;
    width: 100%;
    max-width: 100%;
    margin: 0;
    position: static;
    box-sizing: border-box;
  }

  .login-card {
    margin-top: 0;
    width: 100%;
    padding: 1.5rem 1rem;
    box-sizing: border-box;
  }

  .system-title {
    margin-bottom: 1.2rem;
    padding-bottom: 1rem;
  }

  .system-title h1 { font-size: 18px; }
  .system-title h2 { font-size: 14px; }
  .system-title h3 { font-size: 20px; }

  .system-description > p {
    font-size: 0.9rem;
    margin-bottom: 1.2rem;
  }

  .features {
    gap: 1rem;
    margin-bottom: 1.5rem;
  }

  .feature { gap: 0.8rem; }

  .feature-icon {
    font-size: 1.3rem;
    padding: 0.4rem;
    min-width: 35px;
  }

  .feature-text h4 { font-size: 0.95rem; }
  .feature-text p  { font-size: 0.85rem; }

  .system-benefits { padding: 1rem; }
  .system-benefits h4 { font-size: 1rem; }
  .system-benefits li { font-size: 0.85rem; }

  .login-header {
    margin-bottom: 1.2rem;
  }

  .login-header h2 { font-size: 16px; }

  .form-group {
    margin-bottom: 1rem;
  }

  .form-group label { font-size: 0.85rem; }

  .form-group input {
    padding: 0.5rem 0.6rem;
    font-size: 0.85rem;
  }

  .form-actions { margin-top: 1.2rem; }

  .btn {
    font-size: 0.85rem;
    padding: 0.6rem 1.5rem;
    width: 100%;
  }

  .error-msg {
    font-size: 0.8rem;
    padding: 0.6rem;
    margin-bottom: 1rem;
  }

  .login-footer p { font-size: 0.75rem; }

  .top-bar {
    padding: 0 !important;
  }

  .top-bar .register-btn {
    padding: 0.4rem 1rem;
    font-size: 0.8rem;
  }
}