/* Paleta de colores suaves y modernos - Actualizada */
:root {
  --fondo-principal: #F8F9FB;
  --navbar-bg: #1A237E;
  --contenedor-bg: #FFFFFF;
  --primario: #3F51B5;
  --secundario: #7986CB;
  --exito: #66BB6A;
  --texto-principal: #2C3E50;
  --texto-secundario: #546E7A;
  --borde-suave: #E3E8F0;
  --progreso-bg: #E8EAF6;
  --progreso-color: #3F51B5;
  --info-bg: #E1F5FE;
  --info-color: #0288D1;
  --success-bg: #E8F5E9;
  --success-color: #388E3C;
  --error-bg: #FFEBEE;
  --error-color: #D32F2F;
}

body {
  background: var(--fondo-principal);
  color: var(--texto-principal);
  font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.6;
}

.navbar {
  background: var(--navbar-bg) !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin: 0;
  max-width: 100vw;
  box-shadow: 0 2px 12px rgba(26, 35, 126, 0.15);
  padding: 0.5rem 2rem;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  min-height: 60px;
  display: flex;
  align-items: center;
}

.navbar .container {
  background: none;
  box-shadow: none;
  border-radius: 0;
  margin: 0;
  padding: 0;
  max-width: 1200px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand {
  color: #fff !important;
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 1px;
  margin-right: 2rem;
}

.navbar-nav {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}

.navbar-nav .nav-link {
  color: #fff !important;
  font-weight: 500;
  font-size: 1rem;
  padding: 0.2rem 0.7rem;
  border-radius: 4px;
  transition: background 0.2s, color 0.2s;
  opacity: 0.92;
}

.navbar-nav .nav-link:hover, .navbar-nav .nav-link.active {
  background: var(--primario);
  color: #fff !important;
  opacity: 1;
}

.container {
  background: var(--contenedor-bg);
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(45, 58, 74, 0.08);
  padding: 24px 20px;
  margin-top: 85px;
  max-width: 1200px;
  border: 1px solid var(--borde-suave);
}

.btn, .btn-primary {
  background: var(--primario);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(63, 81, 181, 0.15);
  font-size: 0.95rem;
  padding: 0.5rem 1.3rem;
  letter-spacing: 0.3px;
}

.btn:hover, .btn-primary:hover {
  background: var(--secundario);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(63, 81, 181, 0.2);
}

table {
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--borde-suave);
  width: 100%;
  margin-bottom: 1.5rem;
}

th {
  background: var(--navbar-bg);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 12px 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

td {
  background: #fff;
  color: var(--texto-principal);
  font-size: 0.95rem;
  padding: 12px 16px;
  border-bottom: 1px solid var(--borde-suave);
}

tr:hover td {
  background: #F5F7FA;
}

.alert {
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  border: none;
}

.alert-success {
  background: #E8F5E9;
  color: #2E7D32;
  border-left: 4px solid var(--exito);
}

.alert-danger {
  background: #FFEBEE;
  color: #C62828;
  border-left: 4px solid #EF5350;
}

.icon {
  color: var(--texto-principal);
  margin: 0 6px;
}

@media (max-width: 900px) {
  .container {
    padding: 16px 12px;
    margin-top: 75px;
    border-radius: 8px;
  }
  
  .navbar {
    padding: 0.4rem 1rem;
  }
}

@media (max-width: 600px) {
  .navbar {
    padding: 0.3rem 0.8rem;
  }
  
  .container {
    margin-top: 65px;
    padding: 12px 8px;
    border-radius: 6px;
  }
  
  th, td {
    padding: 10px 12px;
    font-size: 0.9rem;
  }
}

/* Estilos para la barra de progreso */
.progress-container {
  background: var(--progreso-bg);
  border-radius: 8px;
  height: 20px;
  margin: 1rem 0;
  overflow: hidden;
  position: relative;
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
}

.progress-bar {
  background: linear-gradient(45deg, var(--progreso-color), var(--secundario));
  height: 100%;
  border-radius: 8px;
  transition: width 0.3s ease;
  position: relative;
  animation: progress-animation 1s infinite linear;
  background-size: 30px 30px;
  background-image: linear-gradient(
    45deg,
    rgba(255, 255, 255, .15) 25%,
    transparent 25%,
    transparent 50%,
    rgba(255, 255, 255, .15) 50%,
    rgba(255, 255, 255, .15) 75%,
    transparent 75%,
    transparent
  );
}

.progress-text {
  position: absolute;
  width: 100%;
  text-align: center;
  color: var(--texto-principal);
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 20px;
  text-shadow: 0 0 2px rgba(255,255,255,0.5);
}

@keyframes progress-animation {
  from {
    background-position: 0 0;
  }
  to {
    background-position: 30px 0;
  }
}

/* Estado de carga */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  flex-direction: column;
  gap: 1rem;
}

.loading-text {
  color: var(--texto-secundario);
  font-size: 1rem;
  font-weight: 500;
  margin: 0;
}

/* Estilos para la información de progreso */
.progress-info {
    text-align: center;
    margin-bottom: 1rem;
}

.current-character {
    display: block;
    font-size: 1.1rem;
    color: var(--texto-principal);
    margin-bottom: 0.3rem;
}

.characters-count {
    color: var(--texto-secundario);
    font-size: 0.9rem;
}