/* Reset y Base */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Open Sans', sans-serif;
  line-height: 1.6;
  color: #374151;
  background-color: #ffffff;
}

/* Variables CSS */
:root {
  --primary-blue: #1e3a8a;
  --light-blue: #3b82f6;
  --success-green: #10b981;
  --warning-orange: #f59e0b;
  --danger-red: #ef4444;
  --dark-gray: #374151;
  --medium-gray: #6b7280;
  --light-gray: #f3f4f6;
  --white: #ffffff;

  --font-primary: 'Inter', sans-serif;
  --font-secondary: 'Open Sans', sans-serif;

  --section-padding: 5rem 0;
  --container-padding: 0 1rem;
  --container-max-width: 1200px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-dropdown: 0 10px 25px rgba(0, 0, 0, 0.25);

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

/* Utilidades */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: var(--container-padding);
}

/* Header */
.header {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #e5e7eb;
  z-index: 1000;
  transition: all 0.3s ease;
}
.header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}
.nav-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 1rem;
  display: flex; justify-content: space-between; align-items: center;
  height: 4rem;
}
.nav-logo {
  font-family: var(--font-primary); font-weight: 700; font-size: 1.5rem;
  color: var(--primary-blue);
  text-decoration: none; transition: color 0.3s ease;
}
.nav-logo:hover { color: var(--light-blue); }

.nav-list { display: flex; list-style: none; gap: 2rem; }
.nav-item { position: relative; }
.nav-link {
  font-family: var(--font-primary);
  font-weight: 500;
  color: var(--dark-gray);
  text-decoration: none;
  padding: 0.5rem 0;
  border-bottom: 2px solid transparent;
  transition: all 0.3s ease;
  display: flex; align-items: center; gap: 0.5rem;
}
.nav-link:hover, .nav-link.active {
  color: var(--primary-blue);
  border-bottom-color: var(--primary-blue);
}

/* Dropdown */
.dropdown { position: relative; }
.dropdown-toggle {
  background: none; border: none; cursor: pointer;
  font-size: 1rem; display: flex; align-items: center; gap: 0.5rem;
}
.dropdown-arrow { width: 12px; height: 12px; transition: transform 0.3s ease; }
.dropdown.active .dropdown-arrow { transform: rotate(180deg); }

.dropdown-menu {
  position: absolute; top: 100%; left: 0;
  background: #1f2937;
  min-width: 280px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-dropdown);
  opacity: 0; visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  z-index: 1000;
  margin-top: 0.5rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
}
.dropdown.active .dropdown-menu { opacity: 1; visibility: visible; transform: translateY(0); }

.dropdown-item {
  display: block;
  padding: 0.75rem 1.25rem;
  color: #ffffff;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.3s ease;
  font-size: 0.95rem; font-weight: 500;
}
.dropdown-item:last-child { border-bottom: none; border-radius: 0 0 var(--radius-md) var(--radius-md); }
.dropdown-item:first-child { border-radius: var(--radius-md) var(--radius-md) 0 0; }
.dropdown-item:hover {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  padding-left: 1.5rem;
}
.dropdown-menu a:focus-visible {
  outline: none;
  background: rgba(16, 185, 129, 0.20);
  border-radius: 6px;
}
.dropdown-item.active { background: var(--primary-blue); color: #ffffff; }

.nav-toggle {
  display: none;
  flex-direction: column; justify-content: space-around;
  width: 2rem; height: 2rem;
  background: transparent; border: none; cursor: pointer; padding: 0;
}
.nav-toggle-line {
  width: 100%; height: 2px;
  background: var(--dark-gray);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* Botones */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 600;
  font-family: var(--font-primary);
  text-align: center;
  cursor: pointer;
  border: none;
  transition: all 0.3s ease;
  font-size: 1rem;
}
.btn:focus-visible { outline: 3px solid var(--light-blue); outline-offset: 2px; }
.btn-primary { background: var(--success-green); color: var(--white); }
.btn-primary:hover { background: #059669; transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-secondary { background: transparent; color: var(--primary-blue); border: 2px solid var(--primary-blue); }
.btn-secondary:hover { background: var(--primary-blue); color: var(--white); transform: translateY(-2px); }
.btn-whatsapp { background: #25d366; color: var(--white); }
.btn-whatsapp:hover { background: #20ba5a; transform: translateY(-2px); }

/* Hero */
.hero {
  padding: 8rem 0 5rem;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  min-height: 100vh;
  display: flex; align-items: center;
}
.hero-container { max-width: var(--container-max-width); margin: 0 auto; padding: var(--container-padding); }
.hero-content { text-align: center; max-width: 800px; margin: 0 auto; }
.hero-title {
  font-family: var(--font-primary);
  font-size: 3.5rem; font-weight: 700;
  color: var(--dark-gray);
  margin-bottom: 1rem; line-height: 1.1;
}
.hero-highlight { color: var(--primary-blue); }
.hero-subtitle { font-size: 1.25rem; color: var(--medium-gray); font-weight: 600; margin-bottom: 1rem; }
.hero-description { font-size: 1.1rem; color: var(--medium-gray); margin-bottom: 2rem; max-width: 600px; margin-inline: auto; }
.hero-buttons { display: flex; gap: 1rem; justify-content: center; margin-bottom: 3rem; flex-wrap: wrap; }
.hero-features { display: flex; justify-content: center; gap: 2rem; flex-wrap: wrap; }
.hero-feature { display: flex; align-items: center; gap: 0.5rem; font-weight: 500; color: var(--dark-gray); }
.hero-feature-icon { color: var(--success-green); font-weight: 700; font-size: 1.2rem; }

/* Sections generales */
section { padding: var(--section-padding); }
.section-header { text-align: center; margin-bottom: 3rem; }
.section-title { font-family: var(--font-primary); font-size: 2.5rem; font-weight: 700; color: var(--dark-gray); margin-bottom: 1rem; }
.section-subtitle { font-size: 1.1rem; color: var(--medium-gray); max-width: 600px; margin: 0 auto; }

/* Services */
.services { background: var(--white); }
.services-container { max-width: var(--container-max-width); margin: 0 auto; padding: var(--container-padding); }
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 2rem; margin-bottom: 3rem; }
.service-card {
  background: var(--white);
  border: 1px solid #e5e7eb;
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-md);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-align: center;
}
.service-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.service-icon { font-size: 3rem; margin-bottom: 1rem; }
.service-title { font-family: var(--font-primary); font-size: 1.5rem; font-weight: 600; color: var(--dark-gray); margin-bottom: 1rem; }

/* SERVICE PRICING - VARIANTE A */
.service-pricing {
  text-align: center;
  margin: 1rem 0;
  padding: 1rem;
  background: var(--light-gray);
  border-radius: 8px;
  border-left: 4px solid var(--primary-blue);
}

.pricing-from {
  display: block;
  font-size: 0.75rem;
  color: var(--medium-gray);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 0.5rem;
}

.pricing-main {
  display: flex;
  justify-content: center;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.pricing-amount {
  font-family: var(--font-primary);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--primary-blue);
}

.pricing-currency {
  font-size: 0.9rem;
  color: var(--medium-gray);
  font-weight: 500;
}

.pricing-hours {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid #d1d5db;
  color: var(--medium-gray);
  font-size: 0.9rem;
}

.hours-icon {
  color: var(--success-green);
  font-size: 1rem;
}

.hours-text {
  font-weight: 600;
  color: var(--dark-gray);
}

.service-description { color: var(--medium-gray); margin-bottom: 1.5rem; }
.service-features { list-style: none; margin-bottom: 2rem; text-align: left; }
.service-features li { color: var(--medium-gray); margin-bottom: 0.5rem; padding-left: 1rem; position: relative; }
.service-features li:before { content: "✓"; color: var(--success-green); font-weight: 700; position: absolute; left: 0; }
.service-btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: var(--primary-blue);
  color: var(--white);
  text-decoration: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: all 0.3s ease;
}
.service-btn:hover { background: var(--light-blue); transform: translateY(-2px); }
.service-combo { text-align: center; }
.combo-card {
  background: linear-gradient(135deg, var(--primary-blue), var(--light-blue));
  color: var(--white);
  padding: 2rem;
  border-radius: var(--radius-lg);
  max-width: 500px; margin: 0 auto;
}
.combo-title { font-family: var(--font-primary); font-size: 1.5rem; font-weight: 600; margin-bottom: 1rem; }
.combo-description { margin-bottom: 1.5rem; opacity: 0.9; }

/* About */
.about { background: var(--light-gray); }
.about-container { max-width: var(--container-max-width); margin: 0 auto; padding: var(--container-padding); }
.about-content { display: grid; grid-template-columns: 2fr 1fr; gap: 3rem; align-items: center; }
.about-subtitle { font-family: var(--font-primary); font-size: 1.5rem; font-weight: 600; color: var(--primary-blue); margin-bottom: 1rem; }
.about-description { font-size: 1.1rem; margin-bottom: 2rem; }
.about-highlights { margin-bottom: 2rem; }
.highlight-item { margin-bottom: 0.75rem; padding: 0.75rem; background: var(--white); border-radius: var(--radius-md); }
.about-quote { font-style: italic; font-size: 1.1rem; color: var(--primary-blue); border-left: 4px solid var(--primary-blue); padding-left: 1rem; margin-top: 1rem; }
.image-placeholder img { width: 100%; border-radius: var(--radius-lg); object-fit: cover; }

/* Training */
.training { background: var(--white); }
.training-container { max-width: var(--container-max-width); margin: 0 auto; padding: var(--container-padding); }
.training-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; margin-bottom: 3rem; }
.training-card { background: var(--light-gray); padding: 2rem; border-radius: var(--radius-lg); text-align: center; }
.training-title { font-family: var(--font-primary); font-size: 1.3rem; font-weight: 600; color: var(--dark-gray); margin-bottom: 1.5rem; }
.training-features { list-style: none; text-align: left; }
.training-features li { margin-bottom: 0.5rem; padding-left: 1rem; position: relative; color: var(--medium-gray); }
.training-features li:before { content: "•"; color: var(--primary-blue); font-weight: 700; position: absolute; left: 0; }
.training-cta { text-align: center; }

/* Contact */
.contact { background: var(--light-gray); }
.contact-container { max-width: var(--container-max-width); margin: 0 auto; padding: var(--container-padding); }
.contact-content { display: grid; grid-template-columns: 2fr 1fr; gap: 3rem; max-width: 1000px; margin: 0 auto; }
.contact-form { background: var(--white); padding: 2rem; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }
.form-group { margin-bottom: 1.5rem; }
.form-group label { display: block; margin-bottom: 0.5rem; font-weight: 600; color: var(--dark-gray); }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 0.75rem;
  border: 1px solid #d1d5db; border-radius: var(--radius-md);
  font-size: 1rem; transition: border-color 0.3s ease;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--primary-blue);
}
.form-group input.error, .form-group select.error, .form-group textarea.error {
  border-color: var(--danger-red); box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}
.form-group input.success, .form-group select.success, .form-group textarea.success {
  border-color: var(--success-green); box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}
.contact-info { display: flex; flex-direction: column; gap: 2rem; }
.contact-method { background: var(--white); padding: 1.5rem; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); text-align: center; }
.contact-method h3 { font-family: var(--font-primary); color: var(--primary-blue); margin-bottom: 0.5rem; }

/* Footer */
.footer { background: var(--dark-gray); color: var(--white); padding: 2rem 0; }
.footer-container { max-width: var(--container-max-width); margin: 0 auto; padding: var(--container-padding); }
.footer-content { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; }
.footer-links { display: flex; gap: 2rem; }
.footer-links a { color: var(--white); text-decoration: none; transition: color 0.3s ease; }
.footer-links a:hover { color: var(--light-blue); }

/* Notificaciones */
.notification { position: fixed; top: 20px; right: 20px; z-index: 10000; max-width: 400px; background: white; border-radius: var(--radius-md); box-shadow: var(--shadow-lg); transform: translateX(400px); transition: transform 0.3s ease; }
.notification-content { padding: 1rem; display: flex; align-items: center; gap: 0.75rem; }
.notification-success { border-left: 4px solid var(--success-green); }
.notification-error { border-left: 4px solid var(--danger-red); }
.notification-loading { border-left: 4px solid var(--warning-orange); }
.notification-info { border-left: 4px solid var(--light-blue); }
.notification-message { flex: 1; }
.notification-close { background: none; border: none; font-size: 18px; cursor: pointer; color: var(--medium-gray); }
.notification-icon { font-size: 18px; }
.notification.show { transform: translateX(0); }
@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }
.loading .notification-icon { animation: spin 1s linear infinite; }

/* Media Queries */
@media (max-width: 1024px) {
  .hero-title { font-size: 3rem; }
  .about-content { grid-template-columns: 1fr; gap: 2rem; }
  .contact-content { grid-template-columns: 1fr; gap: 2rem; }
  .dropdown-menu { left: -50px; min-width: 250px; }
}
@media (max-width: 768px) {
  :root { --section-padding: 3rem 0; }
  .nav-menu {
    position: fixed; top: 4rem; right: -100%;
    width: 100%; height: calc(100vh - 4rem);
    background: var(--white);
    flex-direction: column; justify-content: flex-start;
    padding: 2rem; transition: right 0.3s ease;
    box-shadow: var(--shadow-lg);
    overflow-y: auto;
  }
  .nav-menu.show { right: 0; }
  .nav-list { flex-direction: column; gap: 1rem; width: 100%; }
  .nav-link { padding: 1rem 0; border-bottom: 1px solid #e5e7eb; width: 100%; }
  .dropdown-menu { position: static; box-shadow: none; background: var(--light-gray); margin-top: 0.5rem; border-radius: var(--radius-sm); min-width: auto; }
  .dropdown-item { color: var(--dark-gray); background: none; }
  .dropdown-item:hover { background: var(--white); color: var(--primary-blue); }
  .nav-toggle { display: flex; }
  .hero { padding: 6rem 0 3rem; min-height: auto; }
  .hero-title { font-size: 2.5rem; }
  .hero-buttons { flex-direction: column; align-items: center; }
  .hero-features { flex-direction: column; align-items: center; gap: 1rem; }
  .section-title { font-size: 2rem; }
  .services-grid, .training-grid { grid-template-columns: 1fr; }
  .footer-content { flex-direction: column; text-align: center; }
  .notification { right: 10px; left: 10px; max-width: none; transform: translateY(-100px); }
  .notification.show { transform: translateY(0); }
}
@media (max-width: 480px) {
  .hero-title { font-size: 2rem; }
  .section-title { font-size: 1.75rem; }
  .service-card, .contact-form, .contact-method { padding: 1.5rem; }
  .hero-buttons .btn { width: 100%; max-width: 250px; }
}

/* =============================
   BOTÓN FLOTANTE WHATSAPP
   ============================= */

.whatsapp-float {
  position: fixed;
  bottom: 25px;
  right: 25px;
  z-index: 9999;
  width: 60px;
  height: 60px;
  background: #25d366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
  transition: all 0.3s ease;
  text-decoration: none;
  animation: whatsapp-pulse 2s infinite;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.6);
}

.whatsapp-svg {
  width: 35px;
  height: 35px;
}

/* Animación pulsante */
@keyframes whatsapp-pulse {
  0%, 100% {
    transform: scale(1);
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
  }
  50% {
    transform: scale(1.05);
    box-shadow: 0 6px 16px rgba(37, 211, 102, 0.6);
  }
}

/* Responsive */
@media (max-width: 768px) {
  .whatsapp-float {
    bottom: 20px;
    right: 20px;
    width: 55px;
    height: 55px;
  }
  
  .whatsapp-svg {
    width: 32px;
    height: 32px;
  }
}

/* =============================
   MENÚ DE NAVEGACIÓN
   ============================= */

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.nav-menu {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-link {
  color: var(--white);
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  transition: all 0.3s ease;
  padding: 0.5rem 1rem;
  border-radius: 6px;
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--success-green);
}

/* Responsive menú */
@media (max-width: 768px) {
  .nav-menu {
    gap: 1rem;
  }
  
  .nav-link {
    font-size: 0.9rem;
    padding: 0.4rem 0.8rem;
  }
}

@media (max-width: 480px) {
  .nav-container {
    flex-direction: column;
    gap: 1rem;
  }
  
  .nav-menu {
    gap: 0.5rem;
  }
  
  .nav-link {
    font-size: 0.85rem;
    padding: 0.3rem 0.6rem;
  }
}