/* ============================================================
   PIXADVISOR - Main Stylesheet
   Precision Agriculture Platform
   ============================================================ */

/* ---------- Google Fonts ---------- */
/* Moved to <head> in index.html with preconnect for performance */

/* ==========================================================
   1. DESIGN TOKENS / CUSTOM PROPERTIES
   ========================================================== */
:root {
  /* Brand */
  --primary: #0D9488;
  --primary-light: #14B8A6;
  --primary-dark: #0F766E;
  --accent: #7FD633;
  --earth: #92400E;
  --earth-light: #FEF3C7;
  --blue: #1E40AF;
  --blue-light: #DBEAFE;
  --amber: #D97706;
  --amber-light: #FEF3C7;

  /* Neutrals */
  --dark: #0F172A;
  --dark-800: #1E293B;
  --surface: #F8FAFC;
  --surface-100: #F1F5F9;
  --border: #E2E8F0;
  --text: #1E293B;
  --text-muted: #64748B;
  --text-light: #94A3B8;
  --white: #FFFFFF;

  /* Gradients */
  --gradient-brand: linear-gradient(135deg, #0D9488 0%, #1E40AF 100%);
  --gradient-hero: linear-gradient(135deg, rgba(15, 23, 42, 0.85) 0%, rgba(13, 148, 136, 0.7) 100%);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
  --shadow-teal: 0 4px 20px rgba(13, 148, 136, 0.25);

  /* Radii */
  --radius: 12px;
  --radius-lg: 20px;

  /* Transition */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================
   2. RESET & BASE
   ========================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Open Sans', 'Inter', sans-serif;
  font-weight: 700;
  line-height: 1.2;
  color: var(--dark);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  font-size: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* ==========================================================
   3. UTILITIES
   ========================================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-divider {
  width: 60px;
  height: 4px;
  background: var(--gradient-brand);
  border-radius: 2px;
  margin: 16px auto 0;
}

/* Fade-in animation */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Skip link (a11y) */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  background: var(--primary);
  color: var(--white);
  padding: 12px 24px;
  border-radius: var(--radius);
  z-index: 10000;
  font-weight: 600;
}

.skip-link:focus {
  top: 16px;
}

/* ==========================================================
   4. LANGUAGE SWITCHER (i18n)
   ========================================================== */
[data-lang-pt] {
  display: none;
}

html[lang="pt"] [data-lang-es] {
  display: none;
}

html[lang="pt"] [data-lang-pt] {
  display: revert;
}

/* ==========================================================
   5. NAV
   ========================================================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 14px 0;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.5);
  transition: var(--transition);
}

.nav.scrolled {
  padding: 10px 0;
  box-shadow: var(--shadow-sm);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.nav-logo img {
  height: 56px;
  width: auto;
}

.nav-brand-name {
  font-family: 'Open Sans', sans-serif;
  font-weight: 800;
  font-size: 1.6rem;
  letter-spacing: 2px;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 4px 0;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 1px;
  transition: var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background: var(--primary);
  color: var(--white);
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.875rem;
  transition: var(--transition);
}

.nav-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-teal);
}

.nav-cta--muestreo {
  background: var(--accent);
  color: var(--dark);
}

.nav-cta--muestreo:hover {
  background: #6bc22a;
  box-shadow: 0 4px 20px rgba(127, 214, 51, 0.3);
}

/* Language switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--surface-100);
  border-radius: 50px;
  padding: 3px;
}

.lang-btn {
  padding: 5px 12px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: var(--transition);
}

.lang-btn.active {
  background: var(--white);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px 0;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2.5px;
  background: var(--dark);
  border-radius: 2px;
  transition: var(--transition);
}

.hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
}

.hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile nav */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(20px);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

.mobile-nav.open {
  opacity: 1;
  pointer-events: all;
}

.mobile-nav a {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--dark);
}

.mobile-nav a:hover {
  color: var(--primary);
}

/* ==========================================================
   6. HERO
   ========================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  z-index: 1;
}

.hero-container {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 120px 24px 80px;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50px;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.15;
  max-width: 720px;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: rgba(255, 255, 255, 0.85);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: 36px;
}

.hero-ctas {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

.hero-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 36px;
  background: var(--primary);
  color: var(--white);
  border-radius: 50px;
  font-weight: 700;
  font-size: 1rem;
  transition: var(--transition);
}

.hero-btn-primary:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-teal);
}

.hero-btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 36px;
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
}

.hero-btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--white);
  transform: translateY(-2px);
}

/* Hero stats row */
.hero-stats {
  display: flex;
  gap: 48px;
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.hero-stat {
  text-align: left;
}

.hero-stat strong {
  display: block;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 4px;
}

.hero-stat span {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
}

/* ==========================================================
   7. HOW IT WORKS / PROCESS
   ========================================================== */
.process {
  padding: 100px 0;
  background: var(--surface);
}

.process-header {
  text-align: center;
  margin-bottom: 64px;
}

.process-header h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin-bottom: 12px;
}

.process-header p {
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
}

.process-timeline {
  display: flex;
  justify-content: space-between;
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
}

/* Connecting line */
.process-timeline::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 10%;
  right: 10%;
  height: 3px;
  background: var(--border);
  z-index: 0;
}

.process-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 1;
  flex: 1;
  padding: 0 12px;
}

.process-step-number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--white);
  border: 3px solid var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--primary);
  margin-bottom: 16px;
  transition: var(--transition);
}

.process-step:hover .process-step-number {
  background: var(--primary);
  color: var(--white);
}

.process-step-icon {
  font-size: 1.8rem;
  margin-bottom: 12px;
  color: var(--primary);
}

.process-step-title {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--dark);
  margin-bottom: 8px;
}

.process-step-text {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
  max-width: 200px;
}

/* ==========================================================
   8. ABOUT
   ========================================================== */
.about {
  padding: 100px 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-content h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin-bottom: 20px;
}

.about-content p {
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.8;
}

.about-stats {
  display: flex;
  gap: 32px;
  margin-top: 36px;
}

.stat {
  text-align: center;
  padding: 20px;
  background: var(--surface);
  border-radius: var(--radius);
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

.about-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ==========================================================
   9. SERVICES
   ========================================================== */
.services {
  padding: 100px 0;
  background: var(--surface);
}

.services-header {
  text-align: center;
  margin-bottom: 56px;
}

.services-header h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin-bottom: 12px;
}

.services-header p {
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.service-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.service-card-img {
  width: 100%;
  height: 180px;
  overflow: hidden;
}

.service-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.service-card-body {
  padding: 24px;
}

.service-category {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

.cat-mapping {
  background: rgba(13, 148, 136, 0.1);
  color: var(--primary);
}

.cat-nutrition {
  background: rgba(30, 64, 175, 0.1);
  color: var(--blue);
}

.cat-monitoring {
  background: rgba(217, 119, 6, 0.08);
  color: var(--amber);
}

.cat-bio {
  background: rgba(146, 64, 14, 0.08);
  color: var(--earth);
}

.cat-drones {
  background: rgba(124, 58, 237, 0.1);
  color: #7C3AED;
}

.service-card h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.service-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}

.service-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
}

.service-card-link:hover {
  gap: 10px;
}

/* ==========================================================
   10. TESTIMONIALS / RESULTS
   ========================================================== */
.testimonials {
  padding: 100px 0;
}

.testimonials h2 {
  text-align: center;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin-bottom: 56px;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.testimonial-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px;
  border-left: 4px solid var(--primary);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.testimonial-card:hover {
  box-shadow: var(--shadow-md);
}

.testimonial-quote {
  font-size: 0.95rem;
  color: var(--text);
  line-height: 1.7;
  font-style: italic;
  margin-bottom: 20px;
  position: relative;
}

.testimonial-quote::before {
  content: '\201C';
  font-size: 3rem;
  color: var(--primary-light);
  position: absolute;
  top: -16px;
  left: -4px;
  line-height: 1;
  opacity: 0.4;
}

.testimonial-crop {
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--primary-dark);
  margin-bottom: 4px;
}

.testimonial-location {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.testimonial-stars {
  color: var(--amber);
  font-size: 0.9rem;
  letter-spacing: 2px;
}

/* ==========================================================
   11. PACKAGES
   ========================================================== */
.packages {
  padding: 100px 0;
  background: var(--surface);
}

.packages h2 {
  text-align: center;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin-bottom: 56px;
}

.packages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: start;
}

.package-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  border: 2px solid var(--border);
  transition: var(--transition);
  position: relative;
}

.package-card:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-md);
}

.package-card--featured {
  border-color: var(--primary);
  transform: scale(1.05);
  box-shadow: var(--shadow-teal);
}

.package-card--featured:hover {
  transform: scale(1.07);
}

.package-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 24px;
  background: var(--gradient-brand);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-radius: 50px;
  white-space: nowrap;
}

.package-name {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 4px;
}

.package-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.package-features {
  text-align: left;
  margin-bottom: 32px;
}

.package-features li {
  padding: 8px 0;
  font-size: 0.9rem;
  color: var(--text);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  border-bottom: 1px solid var(--surface-100);
}

.package-features li::before {
  content: '\2713';
  color: var(--primary);
  font-weight: 700;
  flex-shrink: 0;
}

.package-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 14px 28px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 0.95rem;
  transition: var(--transition);
  border: 2px solid var(--primary);
  color: var(--primary);
  background: transparent;
}

.package-cta:hover {
  background: var(--primary);
  color: var(--white);
}

.package-card--featured .package-cta {
  background: var(--primary);
  color: var(--white);
}

.package-card--featured .package-cta:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
}

/* ==========================================================
   12. TECHNOLOGY
   ========================================================== */
.tech {
  padding: 100px 0;
}

.tech-header {
  text-align: center;
  margin-bottom: 56px;
}

.tech-header h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin-bottom: 12px;
}

.tech-header p {
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.tech-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.tech-card:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-md);
}

.tech-card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.tech-card-body {
  padding: 28px;
}

.tech-card h3 {
  font-size: 1.15rem;
  margin-bottom: 16px;
}

.tech-card-features {
  margin-bottom: 20px;
}

.tech-card-features li {
  padding: 6px 0;
  font-size: 0.875rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.tech-card-features li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
}

.tech-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
}

.tech-card-link:hover {
  gap: 10px;
}

/* ==========================================================
   13. GALLERY
   ========================================================== */
.gallery {
  padding: 100px 0;
  background: var(--surface);
}

.gallery h2 {
  text-align: center;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin-bottom: 36px;
}

.gallery-filters {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.gallery-filter-btn {
  padding: 8px 22px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--white);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.gallery-filter-btn:hover {
  border-color: var(--primary-light);
  color: var(--primary);
}

.gallery-filter-btn.active {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.gallery-item {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
}

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

.gallery-item:hover img {
  transform: scale(1.08);
}

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15, 23, 42, 0.7) 0%, transparent 60%);
  display: flex;
  align-items: flex-end;
  padding: 20px;
  opacity: 0;
  transition: var(--transition);
}

.gallery-item:hover .gallery-overlay {
  opacity: 1;
}

.gallery-caption {
  color: var(--white);
  font-size: 0.9rem;
  font-weight: 600;
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.92);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 16px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.lightbox.open {
  opacity: 1;
  pointer-events: all;
}

.lightbox-img {
  max-width: 90vw;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--radius);
}

.lightbox-close {
  position: absolute;
  top: 24px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  transition: var(--transition);
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.2);
}

.lightbox-caption {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.9rem;
  text-align: center;
}

/* ==========================================================
   14. APPS SECTION
   ========================================================== */
.apps-section {
  padding: 100px 0;
  background: var(--dark);
}

.apps-section h2 {
  text-align: center;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  color: var(--white);
  margin-bottom: 56px;
}

.apps-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.app-card {
  border-radius: var(--radius-lg);
  padding: 40px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.app-card:hover {
  transform: translateY(-4px);
}

.app-card--admin {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
}

.app-card--muestreo {
  background: linear-gradient(135deg, #15803d 0%, #22c55e 100%);
}

.app-card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 20px;
}

.app-card h3 {
  font-size: 1.5rem;
  color: var(--white);
  margin-bottom: 12px;
}

.app-card p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 20px;
}

.app-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}

.app-card-tag {
  display: inline-block;
  padding: 5px 14px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--white);
}

.app-card-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--white);
  color: var(--dark);
  border-radius: 50px;
  font-weight: 700;
  font-size: 0.9rem;
  transition: var(--transition);
}

.app-card-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* ==========================================================
   15. CTA FINAL
   ========================================================== */
.cta-final {
  padding: 100px 0;
  background: var(--dark-800);
  text-align: center;
}

.cta-motto {
  font-size: clamp(1.6rem, 3vw, 2.6rem);
  font-weight: 700;
  color: var(--white);
  max-width: 700px;
  margin: 0 auto 16px;
  line-height: 1.3;
}

.cta-subtext {
  font-size: 1.05rem;
  color: var(--text-light);
  max-width: 520px;
  margin: 0 auto 40px;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.cta-buttons .hero-btn-primary,
.cta-buttons .hero-btn-secondary {
  /* Inherits hero button styles */
}

/* ==========================================================
   16. CONTACT
   ========================================================== */
.contact {
  padding: 100px 0;
}

.contact h2 {
  text-align: center;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin-bottom: 56px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-card {
  display: flex;
  gap: 16px;
  padding: 24px;
  background: var(--surface);
  border-radius: var(--radius);
  transition: var(--transition);
}

.contact-card:hover {
  box-shadow: var(--shadow-sm);
}

.contact-card i,
.contact-card .icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(13, 148, 136, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-card h4 {
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.contact-card p,
.contact-card a {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.contact-form {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.1);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 14px 28px;
  background: var(--primary);
  color: var(--white);
  border-radius: 50px;
  font-weight: 700;
  font-size: 1rem;
  border: none;
  transition: var(--transition);
}

.form-submit:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-teal);
}

/* ==========================================================
   17. FOOTER
   ========================================================== */
.footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 72px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-col-brand {
  display: flex;
  flex-direction: column;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.footer-brand img {
  height: 70px;
  width: auto;
}

.footer-brand span {
  font-family: 'Open Sans', sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--white);
}

.footer-tagline {
  font-size: 0.875rem;
  line-height: 1.7;
  margin-bottom: 24px;
  color: rgba(255, 255, 255, 0.55);
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--primary);
  color: var(--white);
}

.footer-links h4 {
  color: var(--white);
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer-links a {
  display: block;
  padding: 6px 0;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.55);
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--primary-light);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.4);
}

/* ==========================================================
   18. WHATSAPP FLOAT
   ========================================================== */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #25D366;
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.35);
  z-index: 900;
  transition: var(--transition);
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 28px rgba(37, 211, 102, 0.45);
}

/* ==========================================================
   19. RESPONSIVE - 1024px
   ========================================================== */
@media (max-width: 1024px) {
  .tech-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .packages-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }

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

  .package-card--featured:hover {
    transform: translateY(-4px);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

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

  .nav-brand-name {
    font-size: 1.1rem;
    letter-spacing: 1px;
  }

  .nav-logo img {
    height: 40px;
  }

  .hamburger {
    display: flex;
  }

  .mobile-nav {
    display: flex;
  }

  .hero-container {
    text-align: center;
    padding: 140px 24px 60px;
  }

  .hero-title,
  .hero-subtitle {
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
  }

  .hero-ctas {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
  }

  .hero-stat {
    text-align: center;
  }

  /* Process timeline vertical */
  .process-timeline {
    flex-direction: column;
    gap: 40px;
    align-items: flex-start;
    padding-left: 36px;
  }

  .process-timeline::before {
    top: 0;
    bottom: 0;
    left: 27px;
    right: auto;
    width: 3px;
    height: 100%;
  }

  .process-step {
    flex-direction: row;
    text-align: left;
    gap: 20px;
  }

  .process-step-number {
    flex-shrink: 0;
  }

  .process-step-text {
    max-width: none;
  }

  /* Grids to 1 column */
  .about-grid,
  .contact-grid,
  .apps-grid {
    grid-template-columns: 1fr;
  }

  .testimonials-grid {
    grid-template-columns: 1fr;
    max-width: 520px;
    margin: 0 auto;
  }

  .tech-grid {
    grid-template-columns: 1fr;
  }

  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-social {
    justify-content: center;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .about-stats {
    justify-content: center;
  }
}

/* ==========================================================
   21. RESPONSIVE - 480px
   ========================================================== */
@media (max-width: 480px) {
  body {
    font-size: 15px;
  }

  .container {
    padding: 0 16px;
  }

  .hero-title {
    font-size: 1.8rem;
  }

  .hero-btn-primary,
  .hero-btn-secondary {
    padding: 14px 28px;
    font-size: 0.9rem;
    width: 100%;
    justify-content: center;
  }

  .hero-stats {
    gap: 20px;
  }

  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .about-stats {
    flex-direction: column;
    align-items: center;
  }

  .process,
  .about,
  .services,
  .testimonials,
  .packages,
  .tech,
  .gallery,
  .apps-section,
  .cta-final,
  .contact {
    padding: 64px 0;
  }

  .app-card {
    padding: 28px;
  }

  .contact-form {
    padding: 24px;
  }
}

/* ==========================================================
   22. ACCESSIBILITY
   ========================================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .fade-in {
    opacity: 1;
    transform: none;
  }

  .gallery-item img {
    transition: none;
  }
}

:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

button:focus:not(:focus-visible),
a:focus:not(:focus-visible) {
  outline: none;
}
