/* ========================================
   TEMA MODERN GRADIENT - BOOTSTRAP
   ======================================== */

/* Variables CSS del Tema */
:root {
  --primary-color: #667eea;
  --secondary-color: #764ba2;
  --accent-color: #f093fb;
  --success-color: #4facfe;
  --warning-color: #fdbb2d;
  --danger-color: #ff6b6b;
  --info-color: #74b9ff;
  --dark-color: #2d3436;
  
  --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --gradient-warning: linear-gradient(135deg, #fdbb2d 0%, #22c1c3 100%);
  --gradient-danger: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
  
  --border-radius: 15px;
  --shadow-light: 0 5px 15px rgba(102, 126, 234, 0.2);
  --shadow-medium: 0 10px 30px rgba(102, 126, 234, 0.3);
  --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* Animaciones */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

@keyframes glow {
  0%, 100% { box-shadow: 0 0 20px rgba(102, 126, 234, 0.3); }
  50% { box-shadow: 0 0 40px rgba(102, 126, 234, 0.6); }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-50px); }
  to { opacity: 1; transform: translateX(0); }
}

/* Estilos Base */
body {
  font-family: 'Poppins', sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  color: #2d3436;
}

/* Botones */
.btn {
  border-radius: var(--border-radius);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: var(--transition);
  border: none;
  position: relative;
  overflow: hidden;
}

.btn:before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.6s;
}

.btn:hover:before {
  left: 100%;
}

.btn:hover {
  transform: translateY(-3px) scale(1.05);
  animation: glow 2s infinite;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
}

.btn-secondary {
  background: var(--gradient-secondary);
  color: white;
}

.btn-success {
  background: var(--gradient-success);
  color: white;
}

.btn-warning {
  background: var(--gradient-warning);
  color: white;
}

.btn-danger {
  background: var(--gradient-danger);
  color: white;
}

/* Cards */
.card {
  border-radius: var(--border-radius);
  border: none;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-light);
  transition: var(--transition);
  animation: float 6s ease-in-out infinite;
}

.card:hover {
  transform: translateY(-10px) rotateX(5deg);
  box-shadow: var(--shadow-medium);
}

.card-header {
  background: var(--gradient-primary);
  color: white;
  border-bottom: none;
  border-radius: var(--border-radius) var(--border-radius) 0 0;
}

/* Navegación */
.navbar {
  background: rgba(255, 255, 255, 0.1) !important;
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.8rem;
  color: white !important;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.nav-link {
  color: white !important;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-link:before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: white;
  transition: width 0.3s ease;
}

.nav-link:hover:before {
  width: 100%;
}

/* Formularios */
.form-control {
  border-radius: var(--border-radius);
  border: 2px solid rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 20px rgba(102, 126, 234, 0.3);
  transform: scale(1.02);
}

/* Alertas */
.alert {
  border-radius: var(--border-radius);
  border: none;
  animation: slideInLeft 0.6s ease-out;
  backdrop-filter: blur(10px);
}

.alert-primary {
  background: rgba(102, 126, 234, 0.2);
  color: var(--primary-color);
  border-left: 4px solid var(--primary-color);
}

/* Utilidades */
.glass-effect {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.animate-float {
  animation: float 4s ease-in-out infinite;
}

.animate-glow {
  animation: glow 3s ease-in-out infinite;
}

/* Breadcrumbs */
.breadcrumb {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: var(--border-radius);
  padding: 12px 20px;
  border: var(--border-glass);
}

.breadcrumb-item + .breadcrumb-item::before {
  content: "›";
  color: rgba(255, 255, 255, 0.6);
  font-weight: bold;
}

.breadcrumb-item a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: var(--transition);
}

.breadcrumb-item a:hover {
  color: white;
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.breadcrumb-item.active {
  color: white;
  font-weight: 600;
}

/* Paginación */
.pagination {
  gap: 8px;
}

.page-link {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: var(--border-glass);
  border-radius: 10px;
  color: white;
  padding: 10px 15px;
  transition: var(--transition);
  text-decoration: none;
}

.page-link:hover {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.page-item.active .page-link {
  background: var(--gradient-primary);
  border-color: var(--primary-color);
  box-shadow: 0 0 20px rgba(102, 126, 234, 0.5);
}

.page-item.disabled .page-link {
  background: rgba(255, 255, 255, 0.05);
  color: rgba(255, 255, 255, 0.3);
  cursor: not-allowed;
}

/* Pills de Navegación */
.nav-pills .nav-link {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: var(--border-glass);
  border-radius: 25px;
  color: rgba(255, 255, 255, 0.8);
  margin: 0 5px;
  padding: 10px 20px;
  transition: var(--transition);
}

.nav-pills .nav-link:hover {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  transform: translateY(-2px);
}

.nav-pills .nav-link.active {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 0 20px rgba(102, 126, 234, 0.5);
}

/* Pestañas (Tabs) */
.nav-tabs {
  border-bottom: 2px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
}

.nav-tabs .nav-link {
  background: rgba(255, 255, 255, 0.05);
  border: var(--border-glass);
  border-bottom: none;
  border-radius: 15px 15px 0 0;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: -2px;
  padding: 12px 20px;
  transition: var(--transition);
}

.nav-tabs .nav-link:hover {
  background: rgba(255, 255, 255, 0.1);
  color: white;
}

.nav-tabs .nav-link.active {
  background: rgba(255, 255, 255, 0.2);
  border-bottom-color: transparent;
  color: white;
  font-weight: 600;
}

.tab-content {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
  border: var(--border-glass);
  border-radius: 0 15px 15px 15px;
  border-top: none;
}

.tab-pane {
  color: rgba(255, 255, 255, 0.9);
}

/* Modales */
.modal-content {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border: var(--border-glass);
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.modal-header {
  background: var(--gradient-primary);
  border-bottom: var(--border-glass);
  border-radius: 20px 20px 0 0;
  color: white;
}

.modal-title {
  font-weight: 700;
}

.modal-body {
  color: var(--primary-color);
}

.modal-footer {
  border-top: var(--border-glass);
  background: rgba(255, 255, 255, 0.05);
  border-radius: 0 0 20px 20px;
}

.btn-close {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  opacity: 0.8;
  transition: var(--transition);
}

.btn-close:hover {
  background: rgba(255, 255, 255, 0.3);
  opacity: 1;
  transform: scale(1.1);
}

/* Acordeón */
.accordion {
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-medium);
}

.accordion-item {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: var(--border-glass);
  border-bottom: none;
}

.accordion-item:last-child {
  border-bottom: var(--border-glass);
}

.accordion-button {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: none;
  color: white;
  font-weight: 600;
  padding: 20px;
  transition: var(--transition);
}

.accordion-button:not(.collapsed) {
  background: var(--gradient-primary);
  box-shadow: none;
  color: white;
}

.accordion-button:hover {
  background: rgba(255, 255, 255, 0.2);
  color: white;
}

.accordion-button::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23ffffff'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}

.accordion-body {
  background: rgba(255, 255, 255, 0.05);
  color: rgba(255, 255, 255, 0.9);
  padding: 20px;
}

/* Dropdown */
.dropdown-menu {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border: var(--border-glass);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-medium);
  padding: 10px;
}

.dropdown-item {
  border-radius: 8px;
  color: var(--primary-color);
  margin-bottom: 2px;
  padding: 10px 15px;
  transition: var(--transition);
}

.dropdown-item:hover {
  background: var(--gradient-primary);
  color: white;
  transform: translateX(5px);
}

.dropdown-header {
  color: var(--secondary-color);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.dropdown-divider {
  border-color: rgba(102, 126, 234, 0.2);
  margin: 8px 0;
}

/* Offcanvas */
.offcanvas {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border: var(--border-glass);
}

.offcanvas-header {
  background: var(--gradient-primary);
  color: white;
  padding: 20px;
}

.offcanvas-title {
  font-weight: 700;
}

.offcanvas-body {
  color: var(--primary-color);
  padding: 20px;
}

/* Carrusel */
.carousel {
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-medium);
}

.carousel-inner {
  border-radius: var(--border-radius);
}

.carousel-control-prev,
.carousel-control-next {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: 50%;
  height: 50px;
  margin: auto 20px;
  transition: var(--transition);
  width: 50px;
}

.carousel-control-prev:hover,
.carousel-control-next:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: scale(1.1);
}

.carousel-indicators [data-bs-target] {
  background-color: rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  height: 12px;
  transition: var(--transition);
  width: 12px;
}

.carousel-indicators .active {
  background-color: white;
  transform: scale(1.2);
}

/* Toast */
.toast {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border: var(--border-glass);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-medium);
}

.toast-header {
  background: rgba(255, 255, 255, 0.1);
  border-bottom: var(--border-glass);
  color: var(--primary-color);
  font-weight: 600;
}

.toast-body {
  color: var(--primary-color);
}

/* Spinners */
.spinner-border,
.spinner-grow {
  color: var(--primary-color);
}

.spinner-border {
  border-color: rgba(102, 126, 234, 0.2);
  border-top-color: var(--primary-color);
}

/* Placeholders */
.placeholder {
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.3), rgba(255, 255, 255, 0.1));
  background-size: 200% 100%;
  animation: placeholder-wave 2s linear infinite;
}

@keyframes placeholder-wave {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* Input Groups */
.input-group-text {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: var(--border-glass);
  color: white;
  font-weight: 600;
}

.input-group .form-control {
  border-color: rgba(255, 255, 255, 0.2);
}

.input-group .btn {
  border-color: rgba(255, 255, 255, 0.2);
}

/* Form Check (Radio y Checkbox) */
.form-check-input {
  background-color: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 255, 255, 0.3);
  transition: var(--transition);
}

.form-check-input:checked {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  box-shadow: 0 0 10px rgba(102, 126, 234, 0.5);
}

.form-check-input:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

.form-check-label {
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
}

/* Form Select */
.form-select {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: var(--border-glass);
  border-radius: var(--border-radius);
  color: white;
  transition: var(--transition);
}

.form-select:focus {
  background: rgba(255, 255, 255, 0.2);
  border-color: var(--primary-color);
  box-shadow: 0 0 20px rgba(102, 126, 234, 0.3);
  color: white;
}

.form-select option {
  background: var(--primary-color);
  color: white;
}