/* ===== VARIABLES CSS PARA MEJOR MANTENIMIENTO ===== */
:root {
  /* Colores Modo Claro */
  --primary-color: #15376C;
  --secondary-color: #2563eb;
  --accent-color: #38bdf8;
  --text-primary: #333;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-gradient: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  --border-color: rgba(21, 55, 108, 0.1);
  --shadow-light: 0 2px 20px rgba(21, 55, 108, 0.1);
  --shadow-medium: 0 10px 30px rgba(21, 55, 108, 0.1);
  --shadow-heavy: 0 20px 50px rgba(21, 55, 108, 0.2);
  --glassmorphism: rgba(255, 255, 255, 0.95);
}

[data-theme="dark"] {
  /* Colores Modo Oscuro */
  --primary-color: #38bdf8;
  --secondary-color: #2563eb;
  --accent-color: #0ea5e9;
  --text-primary: #e2e8f0;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-gradient: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  --border-color: #334155;
  --shadow-light: 0 2px 20px rgba(15, 23, 42, 0.3);
  --shadow-medium: 0 10px 30px rgba(15, 23, 42, 0.2);
  --shadow-heavy: 0 20px 50px rgba(15, 23, 42, 0.4);
  --glassmorphism: rgba(30, 41, 59, 0.95);
}

/* ===== ESTILOS BASE ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-gradient);
  overflow-x: hidden;
}

.container {
  max-inline-size: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== HEADER ===== */
header {
  background: var(--glassmorphism);
  backdrop-filter: blur(10px);
  position: fixed;
  inset-block-start: 0;
  inset-inline-start: 0;
  inset-inline-end: 0;
  inline-size: 100vw;
  z-index: 1000;
  box-shadow: var(--shadow-light);
  transition: all 0.3s ease;
  margin: 0;
  padding: 0;
}

nav.container {
  max-inline-size: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  inline-size: 100%;
  box-sizing: border-box;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary-color);
  text-decoration: none;
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
}

.nav-links a:hover {
  color: var(--primary-color);
  transform: translateY(-2px);
}

.nav-links a::after {
  content: '';
  position: absolute;
  inset-block-end: -5px;
  inset-inline-start: 0;
  inline-size: 0;
  block-size: 2px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  transition: inline-size 0.3s ease;
}

.nav-links a:hover::after {
  inline-size: 100%;
}

/* ===== THEME TOGGLE ===== */
.theme-toggle {
  background: transparent;
  border: 2px solid var(--border-color);
  border-radius: 50%;
  inline-size: 40px;
  block-size: 40px;
  cursor: pointer;
  font-size: 1.2rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.theme-toggle:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
  transform: rotate(180deg);
}

#theme-select {
  background: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.3rem 0.7rem;
  font-size: 1rem;
  margin-inline-start: 0.5rem;
  transition: background 0.3s, color 0.3s, border-color 0.3s;
}

#theme-select:focus {
  outline: 2px solid var(--primary-color);
}

[data-theme="dark"] #theme-select {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.cta-button {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--bg-primary);
  padding: 0.8rem 2rem;
  border: none;
  border-radius: 50px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
  box-shadow: 0 4px 15px rgba(21, 55, 108, 0.3);
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(21, 55, 108, 0.4);
}

/* ===== HERO SECTION ===== */
.hero {
  padding: 8rem 0 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset-block-start: 0;
  inset-inline-start: 0;
  inset-inline-end: 0;
  inset-block-end: 0;
  background: radial-gradient(circle at 30% 20%, rgba(21, 55, 108, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 70% 80%, rgba(37, 99, 235, 0.1) 0%, transparent 50%);
  z-index: -1;
}

[data-theme="dark"] .hero::before {
  background: radial-gradient(circle at 30% 20%, rgba(56, 189, 248, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 70% 80%, rgba(37, 99, 235, 0.1) 0%, transparent 50%);
}

.hero h1 {
  font-size: 4rem;
  font-weight: 900;
  color: var(--primary-color);
  margin-block-end: 1.5rem;
  line-height: 1.1;
  animation: fadeInUp 1s ease-out;
}

.hero p {
  font-size: 1.5rem;
  color: var(--text-secondary);
  margin-block-end: 3rem;
  max-inline-size: 600px;
  margin-inline-start: auto;
  margin-inline-end: auto;
  animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 1s ease-out 0.4s both;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--bg-primary);
  padding: 1rem 2.5rem;
  border: none;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1.1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
  box-shadow: 0 6px 20px rgba(21, 55, 108, 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--primary-color);
  padding: 1rem 2.5rem;
  border: 2px solid var(--primary-color);
  border-radius: 50px;
  font-weight: 600;
  font-size: 1.1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(21, 55, 108, 0.4);
}

.btn-secondary:hover {
  background: var(--primary-color);
  color: var(--bg-primary);
  transform: translateY(-3px);
}

/* ===== ROLES SECTION ===== */
.roles {
  padding: 6rem 0;
  background: var(--bg-primary);
}

.section-title {
  text-align: center;
  font-size: 3rem;
  font-weight: 800;
  color: var(--primary-color);
  margin-block-end: 3rem;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  inset-block-end: -10px;
  inset-inline-start: 50%;
  transform: translateX(-50%);
  inline-size: 80px;
  block-size: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: 2px;
}

.roles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-block-start: 4rem;
}

.role-card {
  background: var(--bg-primary);
  padding: 3rem 2rem;
  border-radius: 20px;
  box-shadow: var(--shadow-medium);
  text-align: center;
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.role-card::before {
  content: '';
  position: absolute;
  inset-block-start: 0;
  inset-inline-start: 0;
  inset-inline-end: 0;
  block-size: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.role-card:hover::before {
  transform: scaleX(1);
}

.role-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-heavy);
}

.role-icon {
  inline-size: 80px;
  block-size: 80px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  font-size: 2rem;
  color: var(--bg-primary);
}

.role-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-block-end: 1rem;
}

.role-card p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== PLANS SECTION ===== */
.plans {
  padding: 6rem 0;
  background: var(--bg-gradient);
}

.plans-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-block-start: 4rem;
}

.plan-card {
  background: var(--bg-primary);
  padding: 3rem 2rem;
  border-radius: 20px;
  box-shadow: var(--shadow-medium);
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.plan-card.featured {
  transform: scale(1.05);
  border: 2px solid var(--primary-color);
}

.plan-card.featured::before {
  content: 'MÁS POPULAR';
  position: absolute;
  inset-block-start: 20px;
  inset-inline-end: -30px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--bg-primary);
  padding: 5px 40px;
  font-size: 0.8rem;
  font-weight: 600;
  transform: rotate(45deg);
}

.plan-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-heavy);
}

.plan-card.featured:hover {
  transform: scale(1.05) translateY(-10px);
}

.plan-card h3 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-block-end: 1rem;
}

.plan-price {
  font-size: 3rem;
  font-weight: 900;
  color: var(--primary-color);
  margin-block-end: 0.5rem;
}

.plan-period {
  color: var(--text-muted);
  margin-block-end: 2rem;
}

.plan-features {
  list-style: none;
  margin-block-end: 2rem;
}

.plan-features li {
  padding: 0.5rem 0;
  color: var(--text-secondary);
  position: relative;
  padding-inline-start: 1.5rem;
}

.plan-features li::before {
  content: '✓';
  position: absolute;
  inset-inline-start: 0;
  color: var(--primary-color);
  font-weight: bold;
}

/* ===== CONTACT SECTION ===== */
.contact {
  padding: 6rem 0;
  background: var(--bg-primary);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  margin-block-start: 4rem;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--bg-gradient);
  border-radius: 15px;
  transition: transform 0.3s ease;
  border: 1px solid var(--border-color);
}

.contact-item:hover {
  transform: translateX(10px);
}

.contact-icon {
  inline-size: 60px;
  block-size: 60px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--bg-primary);
  flex-shrink: 0;
}

.contact-item h4 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--primary-color);
  margin-block-end: 0.5rem;
}

.contact-item p {
  color: var(--text-secondary);
  margin: 0;
}

.contact-form {
  background: var(--bg-gradient);
  padding: 3rem;
  border-radius: 20px;
  box-shadow: var(--shadow-medium);
  border: 1px solid var(--border-color);
}

.form-group {
  margin-block-end: 1.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  inline-size: 100%;
  padding: 1rem;
  border: 2px solid var(--border-color);
  border-radius: 10px;
  font-size: 1rem;
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: all 0.3s ease;
  font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(21, 55, 108, 0.1);
  transform: translateY(-2px);
}

[data-theme="dark"] .form-group input:focus,
[data-theme="dark"] .form-group select:focus,
[data-theme="dark"] .form-group textarea:focus {
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-block-size: 100px;
}

.contact-form .btn-primary {
  inline-size: 100%;
  margin-block-start: 1rem;
}

/* ===== FOOTER ===== */
footer {
  background: var(--bg-secondary);
  color: var(--text-primary);
  padding: 4rem 0 2rem;
  text-align: center;
  border-block-start: 1px solid var(--border-color);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-block-end: 2rem;
}

.footer-section h4 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-block-end: 1rem;
  color: var(--primary-color);
}

.footer-section p, 
.footer-section a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-section a:hover {
  color: var(--primary-color);
}

.footer-bottom {
  border-block-start: 1px solid var(--border-color);
  padding-block-start: 2rem;
  color: var(--text-muted);
}

/* ===== ANIMACIONES ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero p {
    font-size: 1.2rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .section-title {
    font-size: 2rem;
  }

  .plan-card.featured {
    transform: none;
  }

  .plan-card.featured:hover {
    transform: translateY(-10px);
  }

  .contact-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .contact-form {
    padding: 2rem;
  }

  .nav-controls {
    gap: 0.5rem;
  }

  .theme-toggle {
    inline-size: 35px;
    block-size: 35px;
    font-size: 1rem;
  }
}

/* ===== MEJORAS ADICIONALES ===== */

/* Mejor accesibilidad para el toggle */
.theme-toggle:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Transiciones más suaves para elementos interactivos */
.cta-button, .btn-primary, .btn-secondary {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Mejor feedback visual en hover states */
.role-card:hover .role-icon {
  transform: scale(1.1);
}

.plan-card:hover .plan-price {
  transform: scale(1.05);
}

/* Indicador de modo activo más sutil */
[data-theme="dark"] .theme-toggle {
  background: rgba(56, 189, 248, 0.1);
}

/* Consistencia en bordes redondeados */
.role-card, .plan-card, .contact-item, .contact-form {
  border-radius: 20px;
}

.form-group input, .form-group select, .form-group textarea {
  border-radius: 12px;
}