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

/* ===== VARIABLES ===== */
:root {
  --color-primary: #2f3dbd;
  --color-primary-dark: #1f2a8a;
  --color-bg: #f3f4f6;
  --color-card: #ffffff;
  --color-text: #222;
  --color-text-muted: #666;
  --color-success: #28a745;
  --color-danger: #dc3545;
  --color-warning: #ffc107;
  --color-admin: #6f42c1;
}

body.dark {
  --color-bg: #0b0f1f;
  --color-card: #141a33;
  --color-text: #fff;
  --color-text-muted: #c7c9e2;
}

/* ===== BASE ===== */
body {
  font-family: Arial, Helvetica, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}

/* ===== BOTÓN TEMA ===== */
.theme-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  padding: 10px 14px;
  border-radius: 8px;
  cursor: pointer;
  z-index: 1000;
  transition: background 0.3s;
}

.theme-toggle:hover {
  background: var(--color-primary-dark);
}

/* ===== LAYOUT PRINCIPAL ===== */
.layout {
  max-width: 1300px;
  margin: 80px auto 40px;
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 32px;
}

.content {
  min-width: 0;
}

/* ===== PERFIL ===== */
.profile {
  background: var(--color-card);
  border-radius: 18px;
  padding: 24px;
  text-align: center;
}

.brand-title {
  display: flex;
  justify-content: center;
  gap: 6px;
  font-size: 20px;
}

.brand-highlight {
  background: var(--color-primary);
  color: #fff;
  padding: 4px 10px;
  border-radius: 6px;
  font-weight: 800;
}

.profile-header img {
  width: 130px;
  height: 130px;
  border-radius: 50%;
  margin-bottom: 16px;
}

.profile-header p {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* ===== REDES SOCIALES ===== */
.social-links {
  margin-top: 20px;
  display: flex;
  justify-content: center;
  gap: 16px;
}

.img-icon {
  width: 22px;
  transition: transform 0.3s;
}

.img-icon:hover {
  transform: scale(1.1);
}

/* ===== INTRO ===== */
.intro {
  background: var(--color-card);
  border-radius: 20px;
  padding: 40px;
  margin-bottom: 40px;
}

.intro h2 {
  font-size: 24px;
  margin-bottom: 16px;
}

.intro p {
  font-size: 15px;
  margin-bottom: 14px;
  color: var(--color-text-muted);
}

.intro-cta {
  font-weight: bold;
  color: var(--color-primary);
}

/* ===== TÍTULOS DE SECCIÓN ===== */
.titulo-seccion {
  font-size: 32px;
  color: var(--color-primary);
  margin-bottom: 30px;
  text-align: center;
  position: relative;
  padding-bottom: 15px;
}

.titulo-seccion::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 3px;
}

/* ===== GRID DE PRODUCTOS ===== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 26px;
}

/* ===== TARJETA DE CURSO ===== */
.product-card {
  position: relative;
  background: var(--color-card);
  border-radius: 18px;
  padding: 20px;
  text-align: center;
  overflow: visible;
  z-index: 1;
  transition: transform 0.3s, box-shadow 0.3s;
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.product-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 12px;
  margin-bottom: 14px;
}

.product-card h3 {
  font-size: 18px;
  margin-bottom: 12px;
}

/* ===== TOOLTIP DE DESCRIPCIÓN ===== */
.card-description {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  width: 280px;
  max-width: 90vw;
  padding: 15px 20px;
  background: var(--color-card);
  color: var(--color-text);
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
  border: 2px solid var(--color-primary);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 1000;
  pointer-events: none;
  font-size: 14px;
  text-align: left;
  line-height: 1.6;
  margin-bottom: 15px;
}

.card-description::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -8px;
  border-width: 8px;
  border-style: solid;
  border-color: var(--color-primary) transparent transparent transparent;
}

.card-description::before {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -6px;
  border-width: 6px;
  border-style: solid;
  border-color: var(--color-card) transparent transparent transparent;
  z-index: 1001;
}

.product-card:hover .card-description {
  opacity: 1;
  visibility: visible;
  bottom: calc(100% + 10px);
}

.card-description p {
  margin: 0;
  color: var(--color-text);
}

/* ===== PRECIO ===== */
.price {
  margin: 10px 0 6px;
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
}

.price .currency {
  font-size: 14px;
  font-weight: 600;
  margin-right: 2px;
}

/* ===== BOTONES DE ACCIÓN ===== */
.product-actions {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}

.btn-buy, .btn-details, .btn-ebook {
  border: none;
  border-radius: 12px;
  padding: 12px;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s;
  font-size: 14px;
  text-align: center;
}

.btn-buy {
  flex: 2;
  background: var(--color-primary);
  color: #fff;
}

.btn-buy:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(47, 61, 189, 0.3);
}

.btn-details {
  flex: 1;
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-details:hover {
  background: var(--color-primary);
  color: white;
  transform: translateY(-2px);
}

/* ===== MENSAJE FINAL ===== */
.final-message {
  margin-top: 60px;
  padding: 40px 30px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border-radius: 20px;
  text-align: center;
  color: #fff;
}

.final-message p {
  max-width: 900px;
  margin: 0 auto;
  font-size: 16px;
}

/* ===== FOOTER ===== */
footer {
  margin-top: 50px;
  text-align: center;
  font-size: 14px;
  color: var(--color-text-muted);
}

.login-container {
  max-width: 420px;
  margin: 100px auto 40px;
  padding: 30px;
  background: var(--color-card);
  border-radius: 20px;
  box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.login-header {
  text-align: center;
  margin-bottom: 30px;
}

.login-header h1 {
  color: var(--color-primary);
  font-size: 24px;
  margin-bottom: 10px;
}

.login-header p {
  color: var(--color-text-muted);
}

.alert {
  padding: 12px;
  border-radius: 8px;
  margin-bottom: 20px;
  display: none;
  text-align: center;
}

.alert-error {
  background: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
  display: block;
}

.volver-link {
  text-align: center;
  margin-top: 20px;
}

.volver-link a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 14px;
}

.volver-link a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

/* ===== MODAL DE PAGO ===== */
.modal-pago {
  display: none;
  position: fixed;
  z-index: 10000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0,0,0,0.7);
  backdrop-filter: blur(5px);
  animation: fadeIn 0.3s;
}

.modal-contenido {
  background-color: var(--color-card);
  color: var(--color-text);
  margin: 30px auto;
  padding: 30px;
  border-radius: 18px;
  width: 90%;
  max-width: 500px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  animation: slideIn 0.3s;
  max-height: 90vh;
  overflow-y: auto;
  border: 1px solid rgba(255,255,255,0.1);
}

.modal-contenido h2 {
  color: var(--color-primary);
  margin-bottom: 20px;
  font-size: 28px;
}

.modal-contenido input {
  width: 100%;
  padding: 12px;
  margin: 10px 0;
  border: 2px solid var(--color-text-muted);
  border-radius: 12px;
  font-size: 16px;
  transition: all 0.3s;
  background: var(--color-card);
  color: var(--color-text);
}

.modal-contenido input:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(47, 61, 189, 0.1);
}

.metodos-pago {
  margin: 25px 0;
  padding: 20px;
  background: var(--color-bg);
  border-radius: 18px;
}

.metodo-option {
  display: block;
  margin: 15px 0;
  padding: 15px;
  background: var(--color-card);
  border-radius: 12px;
  cursor: pointer;
  transition: transform 0.2s;
  border: 2px solid transparent;
}

.metodo-option:hover {
  transform: translateX(5px);
  border-color: var(--color-primary);
}

.metodo-option input[type="radio"] {
  width: auto;
  margin-right: 15px;
  transform: scale(1.2);
}

.metodo-option span {
  font-size: 16px;
  line-height: 1.4;
  color: var(--color-text);
}

.btn-pagar {
  background: var(--color-primary);
  color: white;
  padding: 15px 30px;
  border: none;
  border-radius: 12px;
  font-size: 18px;
  font-weight: bold;
  cursor: pointer;
  width: 100%;
  margin: 15px 0;
  transition: all 0.3s;
}

.btn-pagar:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(47, 61, 189, 0.4);
}

.btn-cerrar {
  background: var(--color-text-muted);
  color: white;
  padding: 12px 30px;
  border: none;
  border-radius: 12px;
  font-size: 16px;
  cursor: pointer;
  width: 100%;
  transition: all 0.3s;
  opacity: 0.8;
}

.btn-cerrar:hover {
  opacity: 1;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

/* ===== MODAL GRANDE (PACKS) ===== */
.modal-grande {
  max-width: 800px !important;
  width: 95% !important;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 15px;
  border-bottom: 2px solid var(--color-primary);
}

.modal-header h2 {
  margin: 0;
  color: var(--color-primary);
  font-size: 24px;
}

.btn-cerrar-modal {
  background: none;
  border: none;
  font-size: 28px;
  cursor: pointer;
  color: var(--color-text-muted);
  line-height: 1;
  padding: 0 10px;
}

.btn-cerrar-modal:hover {
  color: var(--color-primary);
}

.modal-body {
  max-height: 60vh;
  overflow-y: auto;
  padding-right: 10px;
  margin-bottom: 20px;
}

/* ===== LISTA DE CURSOS EN MODAL ===== */
.lista-cursos-pack {
  list-style: none;
  padding: 0;
  margin: 0;
}

.lista-cursos-pack li {
  padding: 15px;
  margin-bottom: 10px;
  background: var(--color-bg);
  border-radius: 12px;
  border-left: 4px solid var(--color-primary);
  transition: transform 0.2s, box-shadow 0.2s;
}

.lista-cursos-pack li:hover {
  transform: translateX(5px);
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  background: var(--color-card);
}

.curso-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
}

.curso-info {
  flex: 2;
  min-width: 250px;
}

.curso-info h4 {
  margin: 0 0 5px 0;
  color: var(--color-text);
  font-size: 16px;
  font-weight: bold;
}

.curso-info p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 14px;
  line-height: 1.5;
}

.curso-meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.curso-meta span {
  background: var(--color-card);
  color: var(--color-primary);
  padding: 5px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: bold;
  border: 1px solid var(--color-primary);
}

.loading {
  text-align: center;
  padding: 40px;
  color: var(--color-text-muted);
  font-size: 16px;
}

.modal-footer {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--color-text-muted);
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

/* ===== REGISTRO Y LOGIN ===== */
.registro-container {
  max-width: 500px;
  margin: 40px auto;
  padding: 30px;
  background: var(--color-card);
  border-radius: 20px;
  box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.registro-header {
  text-align: center;
  margin-bottom: 30px;
}

.registro-header h2 {
  color: var(--color-primary);
  font-size: 28px;
  margin-bottom: 10px;
}

.registro-header p {
  color: var(--color-text-muted);
}

.campo {
  margin-bottom: 20px;
  text-align: left;
}

.campo label {
  display: block;
  margin-bottom: 8px;
  font-weight: bold;
  color: var(--color-text);
}

.campo input {
  width: 100%;
  padding: 12px 15px;
  border: 2px solid #e0e0e0;
  border-radius: 10px;
  font-size: 16px;
  transition: all 0.3s;
  background: var(--color-card);
  color: var(--color-text);
}

.campo input:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(47, 61, 189, 0.1);
}

.campo input.error-input {
  border-color: var(--color-danger);
  background-color: rgba(220, 53, 69, 0.05);
}

.error {
  color: var(--color-danger);
  font-size: 14px;
  margin-top: 5px;
  min-height: 20px;
}

/* ===== REQUISITOS DE CONTRASEÑA ===== */
.password-requirements {
  background: var(--color-bg);
  padding: 15px;
  border-radius: 12px;
  margin: 15px 0;
  font-size: 14px;
}

.password-requirements p {
  color: var(--color-text);
  margin-bottom: 10px;
  font-weight: bold;
}

.password-requirements ul {
  list-style: none;
}

.password-requirements li {
  color: var(--color-text-muted);
  margin: 8px 0;
  padding-left: 25px;
  position: relative;
}

.password-requirements li::before {
  content: "○";
  position: absolute;
  left: 0;
  color: var(--color-text-muted);
}

.password-requirements li.valid {
  color: var(--color-success);
}

.password-requirements li.valid::before {
  content: "✓";
  color: var(--color-success);
}

.password-requirements li.invalid {
  color: var(--color-danger);
}

.password-requirements li.invalid::before {
  content: "✗";
  color: var(--color-danger);
}

.btn-registro {
  background: var(--color-primary);
  color: white;
  padding: 15px 30px;
  border: none;
  border-radius: 50px;
  font-size: 18px;
  font-weight: bold;
  cursor: pointer;
  width: 100%;
  transition: all 0.3s;
  margin: 20px 0;
}

.btn-registro:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(47, 61, 189, 0.3);
}

.login-link {
  text-align: center;
  margin-top: 20px;
  color: var(--color-text-muted);
}

.login-link a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: bold;
}

.login-link a:hover {
  text-decoration: underline;
}

/* ===== EBOOKS CON MEJOR ESPACIADO ===== */
.ebooks-section {
  margin-top: 80px;
  padding: 60px 0;
  background: var(--color-bg);
  border-top: 2px solid var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
}

.section-header {
  text-align: center;
  margin-bottom: 50px;
  padding: 0 20px;
}

.section-header .titulo-seccion {
  margin-bottom: 15px;
}

.section-description {
  color: var(--color-text-muted);
  font-size: 18px;
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.6;
}

.ebooks-container {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 30px;
}

.ebooks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 40px;
  margin: 0 auto;
}

.ebook-card {
  background: var(--color-card);
  border-radius: 20px;
  overflow: hidden;
  transition: all 0.3s ease;
  border: 1px solid rgba(0,0,0,0.1);
  position: relative;
  display: flex;
  flex-direction: column;
  box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.ebook-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 30px rgba(0,0,0,0.15);
  border-color: var(--color-primary);
}

.ebook-badge {
  position: absolute;
  top: 15px;
  right: 15px;
  background: linear-gradient(135deg, var(--color-success), #20c997);
  color: white;
  padding: 6px 15px;
  border-radius: 25px;
  font-size: 13px;
  font-weight: bold;
  z-index: 2;
  box-shadow: 0 3px 8px rgba(0,0,0,0.2);
  letter-spacing: 0.5px;
}

.ebook-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
  background: var(--color-bg);
}

.ebook-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.ebook-card:hover .ebook-image img {
  transform: scale(1.08);
}

.ebook-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.ebook-card:hover .ebook-overlay {
  opacity: 1;
}

.ebook-overlay span {
  background: var(--color-primary);
  color: white;
  padding: 10px 25px;
  border-radius: 50px;
  font-weight: bold;
  transform: translateY(20px);
  transition: transform 0.3s ease;
  font-size: 14px;
}

.ebook-card:hover .ebook-overlay span {
  transform: translateY(0);
}

.ebook-content {
  padding: 25px 20px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.ebook-content h3 {
  font-size: 20px;
  margin-bottom: 10px;
  color: var(--color-text);
  line-height: 1.4;
}

.ebook-content p {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 20px;
  line-height: 1.6;
  flex: 1;
}

.ebook-meta {
  display: flex;
  gap: 15px;
  margin-bottom: 20px;
  font-size: 13px;
  flex-wrap: wrap;
}

.ebook-pages, .ebook-format {
  background: var(--color-bg);
  padding: 5px 12px;
  border-radius: 20px;
  color: var(--color-text-muted);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.btn-ebook {
  background: linear-gradient(135deg, var(--color-success), #20c997);
  color: white;
  border: none;
  padding: 14px 20px;
  border-radius: 50px;
  cursor: pointer;
  font-weight: bold;
  font-size: 14px;
  transition: all 0.3s;
  width: 100%;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 10px;
}

.btn-ebook:hover {
  background: linear-gradient(135deg, #218838, #1e7e34);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(40, 167, 69, 0.4);
}

/* Responsive */
@media (max-width: 768px) {
  .ebooks-section {
    margin-top: 50px;
    padding: 40px 0;
  }
  
  .ebooks-container {
    padding: 0 20px;
  }
  
  .ebooks-grid {
    gap: 25px;
  }
  
  .section-description {
    font-size: 16px;
    padding: 0 15px;
  }
  
  .ebook-content h3 {
    font-size: 18px;
  }
}

/* Modo oscuro */
body.dark .ebook-card {
  background: #2a2a2a;
  border-color: #444;
}

body.dark .ebook-card:hover {
  border-color: var(--color-primary);
}

body.dark .ebook-pages,
body.dark .ebook-format {
  background: #333;
  color: #ccc;
}

/* ===== BOTONES DE PERFIL ===== */
.profile-buttons {
  margin-top: 25px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
}

.btn-profile {
  display: block;
  width: 100%;
  padding: 12px 15px;
  border-radius: 50px;
  font-weight: bold;
  text-decoration: none;
  text-align: center;
  transition: all 0.3s ease;
  font-size: 15px;
  cursor: pointer;
  border: 2px solid transparent;
  box-sizing: border-box;
}

.btn-registro-perfil {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.btn-registro-perfil:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(47, 61, 189, 0.3);
}

.btn-login-perfil {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-login-perfil:hover {
  background: var(--color-primary);
  color: white;
}

.btn-admin-perfil {
  background: var(--color-admin);
  color: white;
  border-color: var(--color-admin);
}

.btn-admin-perfil:hover {
  background: #5a32a3;
  border-color: #5a32a3;
  box-shadow: 0 5px 15px rgba(111, 66, 193, 0.3);
}

.btn-cerrar-perfil {
  background: var(--color-danger);
  color: white;
  border-color: var(--color-danger);
}

.btn-cerrar-perfil:hover {
  background: #c82333;
  border-color: #c82333;
  box-shadow: 0 5px 15px rgba(220, 53, 69, 0.3);
}

/* ===== PANEL DE USUARIO ===== */
.panel-info {
  padding: 20px 0;
}

.usuario-info-panel {
  background: var(--color-bg);
  padding: 20px;
  border-radius: 12px;
  margin-bottom: 20px;
  border-left: 5px solid var(--color-primary);
}

.info-item {
  display: flex;
  margin: 10px 0;
  padding: 8px;
  background: var(--color-card);
  border-radius: 8px;
}

.info-label {
  font-weight: bold;
  width: 80px;
  color: var(--color-text-muted);
}

.info-value {
  flex: 1;
  color: var(--color-text);
}

.mensaje-exito {
  background: #d4edda;
  color: #155724;
  padding: 15px;
  border-radius: 10px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-left: 5px solid var(--color-success);
}

.icono-exito {
  font-size: 24px;
}

.proximamente {
  background: var(--color-bg);
  padding: 20px;
  border-radius: 12px;
  margin: 20px 0;
  text-align: center;
  border: 2px dashed var(--color-primary);
}

.proximamente p {
  color: var(--color-text);
  font-size: 16px;
}

.panel-botones {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 30px;
}

.btn-panel {
  display: block;
  width: 100%;
  padding: 15px 20px;
  border-radius: 50px;
  font-weight: bold;
  text-decoration: none;
  text-align: center;
  transition: all 0.3s ease;
  font-size: 16px;
  border: none;
  cursor: pointer;
  box-sizing: border-box;
}

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

.btn-inicio:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(47, 61, 189, 0.3);
}

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

.btn-cerrar:hover {
  background: #c82333;
}

/* ===== ADMIN ===== */
.admin-container {
  max-width: 1400px;
  margin: 30px auto;
  padding: 0 20px;
}

.admin-header {
  background: var(--color-card);
  border-radius: 20px;
  padding: 20px 30px;
  margin-bottom: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 5px 20px rgba(0,0,0,0.08);
  border: 1px solid rgba(0,0,0,0.05);
}

.header-left,
.header-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.header-left h1 {
  color: var(--color-primary);
  font-size: 28px;
  margin: 0;
}

.btn-home {
  background: var(--color-primary);
  color: white;
  padding: 10px 20px;
  border-radius: 50px;
  text-decoration: none;
  font-size: 14px;
  font-weight: bold;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.3s;
  border: 2px solid var(--color-primary);
}

.btn-home:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(47, 61, 189, 0.3);
}

.user-info {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 15px;
  background: var(--color-bg);
  border-radius: 50px;
  border: 1px solid var(--color-text-muted);
}

.user-info span {
  font-weight: bold;
  color: var(--color-text);
}

.btn-logout {
  background: #dc3545;
  color: white;
  padding: 8px 15px;
  border-radius: 50px;
  text-decoration: none;
  font-size: 14px;
  transition: all 0.3s;
}

.btn-logout:hover {
  background: #c82333;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(220, 53, 69, 0.3);
}

.admin-nav {
  background: var(--color-card);
  border-radius: 15px;
  padding: 15px 20px;
  margin-bottom: 30px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.05);
  border: 1px solid rgba(0,0,0,0.05);
}

.admin-nav ul {
  display: flex;
  gap: 10px;
  list-style: none;
  flex-wrap: wrap;
}

.admin-nav a {
  text-decoration: none;
  color: var(--color-text);
  padding: 10px 18px;
  border-radius: 50px;
  transition: all 0.3s;
  font-weight: 500;
  background: var(--color-bg);
}

.admin-nav a:hover,
.admin-nav a.active {
  background: var(--color-primary);
  color: white;
  transform: translateY(-2px);
}

.admin-stats,
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 25px;
  margin-bottom: 30px;
}

.stat-card {
  background: var(--color-card);
  padding: 25px;
  border-radius: 20px;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0,0,0,0.08);
  transition: all 0.3s;
  border: 1px solid rgba(0,0,0,0.05);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--color-primary);
}

.stat-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(0,0,0,0.15);
}

.stat-card h3 {
  font-size: 36px;
  color: var(--color-primary);
  margin-bottom: 8px;
  font-weight: bold;
}

.stat-card p,
.stat-card small {
  color: var(--color-text-muted);
}

.ventas-section,
.filtros-section {
  background: var(--color-card);
  border-radius: 20px;
  padding: 25px;
  margin-top: 30px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

.ventas-header,
.filtros-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 15px;
  margin-bottom: 20px;
}

.ventas-header h2,
.filtros-header h3 {
  color: var(--color-primary);
  font-size: 24px;
  margin: 0;
}

.ingresos-total {
  background: var(--color-success);
  color: white;
  padding: 10px 20px;
  border-radius: 50px;
  font-weight: bold;
}

.export-btn {
  background: #28a745;
  color: white;
  padding: 12px 25px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: bold;
  transition: all 0.3s;
}

.export-btn:hover {
  background: #218838;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(40, 167, 69, 0.3);
}

.filtros {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.filtros input,
.filtros select {
  padding: 12px 15px;
  border: 2px solid var(--color-text-muted);
  border-radius: 10px;
  font-size: 14px;
  background: var(--color-bg);
  color: var(--color-text);
  flex: 1;
  min-width: 200px;
}

.table-responsive {
  overflow-x: auto;
  border-radius: 15px;
}

.table {
  width: 100%;
  background: var(--color-card);
  border-collapse: collapse;
}

.table th {
  background: var(--color-primary);
  color: white;
  padding: 15px;
  text-align: left;
  font-weight: 600;
  font-size: 14px;
}

.table td {
  padding: 15px;
  border-bottom: 1px solid var(--color-bg);
  color: var(--color-text);
}

.table tbody tr:hover {
  background: var(--color-bg);
}

.monto {
  font-weight: bold;
  color: var(--color-primary);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  /* Mobile: descripción visible sin tooltip */
  .card-description {
    position: static;
    background: var(--color-bg);
    color: var(--color-text);
    opacity: 1;
    visibility: visible;
    width: 100%;
    padding: 15px;
    margin: 15px 0;
    border: 1px solid var(--color-text-muted);
    border-radius: 10px;
    box-shadow: none;
    pointer-events: auto;
    transform: none;
    bottom: auto;
  }
  
  .card-description::after,
  .card-description::before {
    display: none;
  }
  
  .card-description p {
    color: var(--color-text-muted);
  }
  
  .product-actions {
    flex-direction: column;
  }
  
  .btn-details, .btn-buy {
    width: 100%;
  }
  
  .modal-grande {
    width: 95%;
    margin: 20px auto;
  }
  
  .curso-item {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .curso-meta {
    margin-top: 10px;
  }
  
  .registro-container {
    margin: 20px;
    padding: 20px;
  }
  
  .ebooks-grid {
    grid-template-columns: 1fr;
    padding: 0 15px;
  }
  
  .ebooks-section {
    margin-top: 40px;
    padding: 30px 0;
  }
  
  .section-header h2 {
    font-size: 28px;
  }
  
  .section-header p {
    font-size: 16px;
  }
}

/* ===== MODO OSCURO AJUSTES ===== */
body.dark .btn-login-perfil {
  color: var(--color-text);
  border-color: var(--color-text);
}

body.dark .btn-login-perfil:hover {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

body.dark .card-description {
  background: #2a2a2a;
  border-color: var(--color-primary);
}

body.dark .card-description::before {
  border-color: #2a2a2a transparent transparent transparent;
}

body.dark .modal-contenido input {
  border-color: #444;
}

body.dark .metodos-pago {
  background: #1a1f35;
}

body.dark .ebook-card {
  background: #2a2a2a;
  border-color: #444;
}

body.dark .password-requirements {
  background: #1a1f35;
}

body.dark .ebook-pages,
body.dark .ebook-format {
  background: #333;
  color: #ccc;
}

body.dark .mensaje-exito {
  background: #1e3a2a;
  color: #d4edda;
  border-left-color: var(--color-success);
}

body.dark .proximamente {
  background: #1a1f35;
  border-color: var(--color-primary);
}

body.dark .info-item {
  background: #2a2a2a;
}

body.dark .lista-cursos-pack li {
  background: #1a1f35;
  border-left-color: #4a6cf7;
}

body.dark .lista-cursos-pack li:hover {
  background: #2a2a2a;
}

body.dark .curso-meta span {
  background: #2a2a2a;
  color: #8a9cff;
  border-color: #4a6cf7;
}