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

body {
  font-family: "Karla", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
  background-color: #f5f5f5;
  overflow-x: hidden;
  margin: 0;
  padding: 0;
}

#bgLogin {
  background-color: #ffffff;
}

main {
  margin: 0;
  padding: 0;
}

.container-fluid {
  padding: 0;
  max-width: 100%;
  margin: 0;
}

.login-container {
  min-height: 100vh;
  display: flex;
  box-shadow: none;
  background: #ffffff;
}

.login-container .row {
  width: 100%;
  margin: 0;
}

/* ========== PANEL IZQUIERDO ========== */
.login-left-panel {
  background: linear-gradient(to bottom, #000000 0%, #3a3a3a 100%);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 2rem;
  overflow: hidden;
}

.login-left-panel::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 1px, transparent 1px);
  background-size: 50px 50px;
  opacity: 0.3;
  animation: backgroundMove 20s linear infinite;
}

@keyframes backgroundMove {
  0% { transform: translate(0, 0); }
  100% { transform: translate(50px, 50px); }
}

.left-content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 500px;
  color: white;
  text-align: center;
  margin: 0 auto;
}

.company-logo-wrapper {
  margin-bottom: 1.5rem;
  text-align: center;
  display: flex;
  justify-content: center;
}

.company-logo {
  max-width: 800px;
  max-height: 350px;
  height: auto;
  filter: brightness(0) invert(1);
  opacity: 0.95;
}

.company-title {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  color: #ffffff;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.company-subtitle {
  font-size: 1.125rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 400;
  letter-spacing: 0.5px;
}

/* ========== PANEL DERECHO ========== */
.login-right-panel {
  background: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 2rem;
}

.right-content {
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
}

.system-logo-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.system-logo {
  max-height: 240px;
  max-width: 700px;
  width: auto;
  height: auto;
}

.welcome-title {
  font-size: 1.875rem;
  font-weight: 700;
  color: #1a202c;
  margin-bottom: 0.5rem;
  letter-spacing: -0.5px;
  text-align: center;
}

.welcome-subtitle {
  font-size: 0.9375rem;
  color: #718096;
  margin-bottom: 2.5rem;
  font-weight: 400;
  text-align: center;
}

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

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

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: #2d3748;
  margin-bottom: 0.5rem;
  letter-spacing: 0.3px;
}

.input-icon {
  position: relative;
}

.input-icon .icon-mail::before,
.input-icon .icon-lock::before {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: #a0aec0;
  font-size: 1.125rem;
  z-index: 2;
  font-family: Arial, sans-serif;
}

.input-icon .icon-mail::before {
  content: '✉';
}

.input-icon .icon-lock::before {
  content: '🔒';
}

.form-control {
  width: 100%;
  padding: 0.875rem 1rem 0.875rem 2.75rem;
  font-size: 0.9375rem;
  font-weight: 400;
  line-height: 1.5;
  color: #2d3748;
  background-color: #ffffff;
  border: 1.5px solid #e2e8f0;
  border-radius: 8px;
  transition: all 0.2s ease;
  outline: none;
}

.form-control::placeholder {
  color: #cbd5e0;
}

.form-control:focus {
  border-color: #000000;
  box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.08);
  background-color: #ffffff;
}

/* ========== BOTÓN ========== */

.btn-ingreso {
  width: 100%;
  padding: 0.875rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  color: #ffffff;
  background: linear-gradient(135deg, #000000 0%, #4a4a4a 100%);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.35);
  margin-top: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.btn-ingreso:hover {
  background: linear-gradient(135deg, #1a1a1a 0%, #6b6b6b 100%);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.45);
  transform: translateY(-2px);
}

.btn-ingreso:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(23, 86, 118, 0.3);
}

.btn-ingreso:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.help-text {
  text-align: center;
  margin-top: 2rem;
  font-size: 0.875rem;
  color: #a0aec0;
}

/* ========== SPINNER ========== */
.spinner-border-sm {
  width: 1rem;
  height: 1rem;
  border-width: 0.15rem;
  margin-right: 0.5rem;
}

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

/* Extra Small Devices (Mobile Portrait - menos de 576px) */
@media (max-width: 575px) {
  .login-left-panel {
    display: none;
  }
  
  .login-right-panel {
    padding: 3rem 2rem;
    min-height: 100vh;
  }
  
  .right-content {
    max-width: 100%;
    padding: 0 1rem;
  }
  
  .welcome-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
  }
  
  .welcome-subtitle {
    font-size: 0.875rem;
    margin-bottom: 2.5rem;
  }
  
  .form-label {
    font-size: 0.8125rem;
  }
  
  .form-control {
    font-size: 0.875rem;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
  }
  
  .btn-ingreso {
    font-size: 0.9375rem;
    padding: 0.8125rem 1.25rem;
  }
  
  .system-logo {
    max-height: 120px;
  }
  
  .system-logo-wrapper {
    margin-bottom: 2rem;
  }
  
  .form-group {
    margin-bottom: 1.75rem;
  }
}

/* Small Devices (Mobile Landscape - 576px a 767px) */
@media (min-width: 576px) and (max-width: 767px) {
  .login-left-panel {
    display: none;
  }
  
  .login-right-panel {
    padding: 3.5rem 3rem;
    min-height: 100vh;
  }
  
  .right-content {
    max-width: 450px;
    padding: 0 1.5rem;
  }
  
  .welcome-title {
    font-size: 1.625rem;
    margin-bottom: 1rem;
  }
  
  .welcome-subtitle {
    margin-bottom: 2.5rem;
  }
  
  .system-logo-wrapper {
    margin-bottom: 2rem;
  }
  
  .form-group {
    margin-bottom: 1.75rem;
  }
}

/* Medium Devices (Tablets - 768px a 991px) */
@media (min-width: 768px) and (max-width: 991px) {
  .login-left-panel,
  .login-right-panel {
    padding: 3.5rem 2.5rem;
  }
  
  .company-title {
    font-size: 2rem;
  }
  
  .company-subtitle {
    font-size: 1rem;
  }
  
  .welcome-title {
    font-size: 1.625rem;
  }
  
  .left-content,
  .right-content {
    max-width: 380px;
    padding: 0 1rem;
  }
  
  .company-logo-wrapper {
    margin-bottom: 2rem;
  }
  
  .system-logo-wrapper {
    margin-bottom: 2rem;
  }
  
  .form-group {
    margin-bottom: 1.75rem;
  }
}

/* Large Devices (Desktop - 992px a 1199px) */
@media (min-width: 992px) and (max-width: 1199px) {
  .left-content {
    max-width: 450px;
  }
  
  .right-content {
    max-width: 400px;
  }
}

/* Extra Large Devices (Large Desktop - 1200px a 1399px) */
@media (min-width: 1200px) and (max-width: 1399px) {
  .company-title {
    font-size: 2.25rem;
  }
}

/* Extra Extra Large Devices (XL Desktop - 1400px+) */
@media (min-width: 1400px) {
  .company-title {
    font-size: 2.75rem;
  }
  
  .company-subtitle {
    font-size: 1.25rem;
  }
  
  .welcome-title {
    font-size: 2rem;
  }
  
  .left-content {
    max-width: 550px;
  }
  
  .right-content {
    max-width: 460px;
  }
}

/* Pantallas con poca altura */
@media (max-height: 600px) {
  .login-container {
    min-height: auto;
  }
  
  .login-left-panel,
  .login-right-panel {
    padding: 1.5rem 1rem;
  }
  
  .welcome-title {
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
  }
  
  .welcome-subtitle {
    margin-bottom: 1.5rem;
  }
  
  .form-group {
    margin-bottom: 1rem;
  }
  
  .help-text {
    margin-top: 1rem;
  }
  
  .company-logo-wrapper {
    margin-bottom: 1.5rem;
  }
  
  .company-title {
    font-size: 1.75rem;
    margin-bottom: 1rem;
  }
}

/* Landscape en móviles */
@media (max-width: 767px) and (orientation: landscape) {
  .login-right-panel {
    padding: 1.5rem 2rem;
  }
  
  .welcome-title {
    font-size: 1.375rem;
    margin-bottom: 0.5rem;
  }
  
  .welcome-subtitle {
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
  }
  
  .form-group {
    margin-bottom: 1rem;
  }
  
  .system-logo-wrapper {
    margin-bottom: 1.25rem;
  }
}