/* 
 * IngenIA - Servicios de Automatización con IA
 * Global Styles
 * Last updated: 2026
 */

/* ================================================
   IMPORTS
   ================================================ */
@import url('variables.css');

/* ================================================
   CSS RESET
   ================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-dark);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
button, input, textarea, select { font: inherit; }

/* ================================================
   TYPOGRAPHY
   ================================================ */
h1, h2, h3, h4, h5, h6 { line-height: var(--line-height-tight); font-weight: var(--font-weight-bold); }
h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
p { margin-bottom: var(--spacing-2); }
.text-center { text-align: center; }
.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ================================================
   LAYOUT
   ================================================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-2);
}
.section {
  padding: var(--spacing-6) 0;
}
.section-dark {
  background-color: var(--color-dark);
  color: var(--color-light);
}
.section-light {
  background-color: var(--color-gray-100);
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-4);
}
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }

/* ================================================
   HEADER
   ================================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-gray-200);
  padding: var(--spacing-2) 0;
}
.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-dark);
  display: flex;
  align-items: center;
  gap: 19px;
}
.logo-text {
  white-space: nowrap;
  color: #000000;
}
.logo svg {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}
.logo-text span {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}
.nav-link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
  transition: color var(--transition-fast);
  position: relative;
}
.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
}

/* Hamburger Menu (CSS checkbox hack) */
.menu-toggle {
  display: none;
}
.menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}
.menu-btn span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--color-dark);
  transition: all var(--transition-normal);
}

/* ================================================
   BUTTONS
   ================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2) var(--spacing-4);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-base);
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-align: center;
}
.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-white);
}
.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn-secondary {
  background-color: var(--color-dark);
  color: var(--color-white);
}
.btn-secondary:hover {
  background-color: var(--color-dark-lighter);
  transform: translateY(-2px);
}
.btn-outline {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: transparent;
}
.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
}
.btn-sm {
  padding: 0.6rem var(--spacing-3);
  font-size: var(--font-size-sm);
  min-height: 44px;
}
.btn-lg {
  padding: var(--spacing-3) var(--spacing-5);
  font-size: var(--font-size-lg);
}

/* ================================================
   CARDS
   ================================================ */
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-4);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-200);
  transition: all var(--transition-normal);
}
.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

/* ================================================
   BREADCRUMBS
   ================================================ */
.breadcrumbs {
  padding: var(--spacing-2) 0;
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}
.breadcrumbs a {
  color: var(--color-primary);
  transition: color var(--transition-fast);
}
.breadcrumbs a:hover {
  color: var(--color-primary-hover);
}
.breadcrumbs span {
  margin: 0 var(--spacing-1);
}

/* ================================================
   FOOTER
   ================================================ */
.footer {
  background-color: var(--color-dark);
  color: var(--color-light);
  padding: var(--spacing-6) 0 var(--spacing-3);
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-5);
}
.footer h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-2);
}
.footer h3 span {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.footer h4 {
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-2);
  color: var(--color-white);
}
.footer p {
  color: var(--color-gray-500);
  margin-bottom: var(--spacing-1);
  font-size: var(--font-size-sm);
}
.footer a {
  display: block;
  color: var(--color-gray-500);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-1);
  transition: color var(--transition-fast);
}
.footer a:hover {
  color: var(--color-white);
}
.footer-bottom {
  border-top: 1px solid var(--color-dark-lighter);
  padding-top: var(--spacing-3);
  text-align: center;
}
.footer-bottom p {
  color: var(--color-gray-500);
  font-size: var(--font-size-sm);
}

/* ================================================
   PRIVACY PAGE
   ================================================ */
.privacy-content h2 { font-size: var(--font-size-xl); margin-top: var(--spacing-4); margin-bottom: var(--spacing-2); }

/* ================================================
   WHATSAPP FLOATING BUTTON
   ================================================ */
.whatsapp-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 1000;
  width: 60px;
  height: 60px;
  background-color: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  animation: pulse-whatsapp 2s infinite;
  transition: transform var(--transition-fast);
}
.whatsapp-btn:hover {
  transform: scale(1.1);
}

@keyframes pulse-whatsapp {
  0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.5); }
  70% { box-shadow: 0 0 0 15px rgba(37, 211, 102, 0); }
  100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

/* ================================================
   HERO SECTION
   ================================================ */
.hero {
  background: var(--gradient-hero);
  color: var(--color-light);
  padding: var(--spacing-8) 0;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-primary);
  opacity: 0.1;
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}
.hero h1 {
  margin-bottom: var(--spacing-3);
}
.hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-gray-300);
  margin-bottom: var(--spacing-2);
}
.hero-typing {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-4);
}
.typing-text {
  color: var(--color-accent);
  font-weight: var(--font-weight-bold);
  border-right: 2px solid var(--color-accent);
  padding-right: 4px;
}
.hero-cta {
  display: flex;
  gap: var(--spacing-2);
  flex-wrap: wrap;
}

/* ================================================
   SECTION HEADERS
   ================================================ */
.section-header {
  margin-bottom: var(--spacing-5);
}
.section-header h2 {
  margin-bottom: var(--spacing-2);
}
.section-header p {
  color: var(--color-gray-500);
  font-size: var(--font-size-lg);
}

/* ================================================
   CARD ICON
   ================================================ */
.card-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-2);
}

/* ================================================
   SERVICE CARDS (clickable)
   ================================================ */
.service-card {
  display: block;
  text-decoration: none;
  color: inherit;
}

/* ================================================
   SOLUTION TEXT
   ================================================ */
.solution-text {
  margin-top: var(--spacing-5);
}

/* ================================================
   TESTIMONIALS
   ================================================ */
.stars {
  color: #F59E0B;
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-2);
}
.testimonial-author {
  margin-top: var(--spacing-2);
}
.testimonial-author strong {
  display: block;
  color: var(--color-dark);
}
.testimonial-author span {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

/* ================================================
   STATS
   ================================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-4);
  text-align: center;
}
.stat-number {
  display: block;
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-1);
}
.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  font-weight: var(--font-weight-medium);
}

/* ================================================
   FORM ELEMENTS
   ================================================ */
.form-group {
  margin-bottom: var(--spacing-3);
}
.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-1);
  color: var(--color-dark);
}
.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--spacing-2);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast);
  background: var(--color-white);
}
.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}
.form-textarea {
  min-height: 120px;
  resize: vertical;
}

/* ================================================
   ANIMATION CLASSES (JS toggles .is-visible)
   ================================================ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.slide-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.slide-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.scale-in {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.scale-in.is-visible {
  opacity: 1;
  transform: scale(1);
}

/* ================================================
   RESPONSIVE - MOBILE FIRST
   ================================================ */
@media (max-width: 767px) {
  .menu-btn {
    display: flex;
  }
  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 75%;
    height: 100vh;
    background: var(--color-white);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--spacing-6) var(--spacing-4);
    gap: var(--spacing-3);
    box-shadow: var(--shadow-lg);
    transition: right var(--transition-normal);
  }
  .nav-link {
    padding: var(--spacing-2) 0;
    min-height: 44px;
    display: flex;
    align-items: center;
  }
  .menu-toggle:checked ~ .nav {
    right: 0;
  }
  .menu-toggle:checked ~ .menu-btn span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  .menu-toggle:checked ~ .menu-btn span:nth-child(2) {
    opacity: 0;
  }
  .menu-toggle:checked ~ .menu-btn span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }
  h1 { font-size: var(--font-size-3xl); }
  h2 { font-size: var(--font-size-2xl); }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .grid {
    grid-template-columns: 1fr;
  }
  .whatsapp-btn {
    bottom: 1rem;
    right: 1rem;
    width: 50px;
    height: 50px;
  }
  .hero-cta { flex-direction: column; }
  .hero h1 { font-size: var(--font-size-3xl); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer a {
    padding: var(--spacing-1) 0;
    min-height: 44px;
    display: flex;
    align-items: center;
  }
  .faq-question {
    min-height: 44px;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  h1 { font-size: 2.5rem; }
}

@media (min-width: 1024px) {
  .nav {
    display: flex;
  }
}

@media (min-width: 1440px) {
  .container {
    max-width: 1320px;
  }
}

/* ================================================
   PREFERS REDUCED MOTION
   ================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms;
    animation-iteration-count: 1;
    transition-duration: 0.01ms;
    scroll-behavior: auto;
  }
  .fade-in, .slide-up, .scale-in {
    opacity: 1;
    transform: none;
  }
  .whatsapp-btn {
    animation: none;
  }
}

/* ================================================
   UTILITY CLASSES
   ================================================ */
.hidden { display: none; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* ================================================
   CONTACT PAGE
   ================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--spacing-5);
  align-items: start;
}
.contact-form-wrapper h2 {
  margin-bottom: var(--spacing-1);
}
.contact-info .card {
  padding: var(--spacing-3);
}
.contact-info .card h3 {
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-1);
}
.contact-info .card p {
  color: var(--color-gray-700);
  margin-bottom: 0;
}

/* ================================================
   ABOUT PAGE
   ================================================ */
.grid-2col {
  grid-template-columns: 1fr 1fr;
}
.team-avatar {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  overflow: hidden;
  margin: 0 auto var(--spacing-3);
}
.team-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
@media (max-width: 767px) {
  .grid-2col {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 767px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

/* ================================================
   SERVICE DETAIL SECTIONS
   ================================================ */
.service-detail {
  padding: var(--spacing-6) 0;
  border-bottom: 1px solid var(--color-gray-200);
}
.service-detail:nth-child(even) {
  background-color: var(--color-gray-100);
}
.service-detail .container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-4);
}
.service-detail-content h2 {
  margin-bottom: var(--spacing-2);
}
.service-detail-content p {
  color: var(--color-gray-700);
  margin-bottom: var(--spacing-2);
}
.benefit-list {
  margin: var(--spacing-3) 0;
}
.benefit-list li {
  padding: var(--spacing-1) 0;
  font-weight: var(--font-weight-medium);
}

/* ================================================
   PROCESS STEPS
   ================================================ */
.process-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--spacing-4);
}
.process-step {
  text-align: center;
  padding: var(--spacing-4);
}
.process-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: white;
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-2);
}

/* ================================================
   FAQ
   ================================================ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}
.faq-item {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.faq-question {
  padding: var(--spacing-3) var(--spacing-4);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-question::-webkit-details-marker { display: none; }
.faq-question::after {
  content: '+';
  font-size: var(--font-size-xl);
  color: var(--color-primary);
  font-weight: var(--font-weight-bold);
  transition: transform var(--transition-normal);
}
.faq-item[open] .faq-question::after {
  content: '−';
}
.faq-answer {
  padding: 0 var(--spacing-4) var(--spacing-3);
  color: var(--color-gray-700);
}