/* ============================================================
   styles.css — Impulso Tecnológico
   Paleta: #0D1B2A | #1E9DFF | #A8FF3E | #2C2C2C | #F4F4F4
   Tipografías: Inter (headlines) · Manrope (body)
   ============================================================ */

/* ============================================================
   1. CSS VARIABLES
   ============================================================ */
:root {
  --color-primary: #0D1B2A;
  --color-secondary: #1E9DFF;
  --color-accent: #A8FF3E;
  --color-neutral: #2C2C2C;
  --color-bg: #F4F4F4;
  --color-white: #FFFFFF;
  --font-heading: 'Inter', sans-serif;
  --font-body: 'Manrope', sans-serif;
  --navbar-height: 72px;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.12);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --container-max: 1200px;
  --gap: 24px;
}

/* ============================================================
   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: var(--font-body);
  color: var(--color-neutral);
  background: var(--color-white);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

ul {
  list-style: none;
}

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

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
}

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

.accent {
  color: var(--color-accent);
}

.section {
  padding: 100px 0;
}

.section-badge {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--color-secondary);
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: 16px;
  text-align: center;
}

.section-line {
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-secondary), var(--color-accent));
  margin: 0 auto 24px;
  border-radius: 2px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: #666;
  max-width: 600px;
  margin: 0 auto 48px;
  text-align: center;
}

.grid {
  display: grid;
  gap: var(--gap);
}

/* ============================================================
   4. BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 50px;
  transition: all var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-primary);
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(168, 255, 62, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.4);
}

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

.btn-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.btn-giant {
  padding: 20px 48px;
  font-size: 1.15rem;
}

/* ============================================================
   5. LOADING SCREEN
   ============================================================ */
.loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s ease;
  pointer-events: none;
}

.loader.hidden {
  opacity: 0;
}

.loader-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.loader-logo {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 900;
  color: var(--color-accent);
  animation: loaderPulse 1s ease-in-out infinite;
}

.loader-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(168, 255, 62, 0.2);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes loaderPulse {
  0%, 100% { transform: scale(0.8); }
  50% { transform: scale(1); }
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ============================================================
   6. CUSTOM CURSOR (desktop only)
   ============================================================ */
.custom-cursor {
  position: fixed;
  width: 8px;
  height: 8px;
  background: var(--color-secondary);
  border-radius: 50%;
  pointer-events: none;
  z-index: 10000;
  transition: transform 0.1s ease;
  mix-blend-mode: difference;
  display: none;
}

@media (pointer: fine) {
  .custom-cursor {
    display: block;
  }
}

/* ============================================================
   7. NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  height: var(--navbar-height);
  display: flex;
  align-items: center;
  transition: all var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(13, 27, 42, 0.95);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  background: var(--color-accent);
  width: 0%;
  transition: width 0.1s linear;
  z-index: 1;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
  position: relative;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 1001;
}

.nav-logo-img {
  width: 42px;
  height: 42px;
  object-fit: contain;
  border-radius: 8px;
}

.nav-logo-fallback {
  width: 42px;
  height: 42px;
  background: var(--color-accent);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.1rem;
  color: var(--color-primary);
}

.nav-logo-text {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-white);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.75);
  padding: 8px 16px;
  border-radius: 8px;
  transition: all var(--transition);
}

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

.nav-link.active {
  color: var(--color-accent);
}

.nav-link-cta {
  background: var(--color-accent);
  color: var(--color-primary) !important;
  font-weight: 700;
  border-radius: 50px;
  padding: 8px 24px;
}

.nav-link-cta:hover {
  background: var(--color-white);
  color: var(--color-primary) !important;
  transform: translateY(-1px);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  z-index: 1001;
  background: none;
  border: none;
  cursor: pointer;
}

.hamburger-line {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: all var(--transition);
  transform-origin: center;
}

.nav-toggle.active .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu overlay */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.nav-overlay.active {
  opacity: 1;
  pointer-events: all;
}

/* ============================================================
   8. HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  overflow: hidden;
  padding-top: var(--navbar-height);
}

.hero-canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 40px 24px;
}

.hero-badge-pulse {
  animation: badgePulse 2.5s ease-in-out infinite;
}

.hero-badge {
  display: inline-block;
  background: rgba(30, 157, 255, 0.15);
  color: var(--color-secondary);
  padding: 8px 20px;
  border-radius: 50px;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  border: 1px solid rgba(30, 157, 255, 0.3);
  margin-bottom: 24px;
}

@keyframes badgePulse {
  0% { box-shadow: 0 0 0 0 rgba(30, 157, 255, 0.3); }
  100% { box-shadow: 0 0 0 12px rgba(30, 157, 255, 0); }
}

.hero-title {
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: 900;
  color: var(--color-white);
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.typewriter-cursor {
  color: var(--color-accent);
  animation: blink 0.8s step-end infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: rgba(255, 255, 255, 0.7);
  max-width: 580px;
  margin: 0 auto 36px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

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

.stat {
  text-align: center;
  color: var(--color-white);
}

.stat-number {
  display: inline;
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--color-accent);
}

.stat-suffix {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-accent);
}

.stat-label {
  display: block;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 4px;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255, 255, 255, 0.15);
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.4);
  font-size: 0.75rem;
  font-family: var(--font-heading);
  letter-spacing: 2px;
  text-transform: uppercase;
  animation: float 2s ease-in-out infinite;
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid rgba(255, 255, 255, 0.4);
  border-bottom: 2px solid rgba(255, 255, 255, 0.4);
  transform: rotate(45deg);
}

@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ============================================================
   9. SERVICIOS
   ============================================================ */
.section-services {
  background: var(--color-bg);
}

.grid-services {
  grid-template-columns: repeat(3, 1fr);
}

.service-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  transition: all var(--transition);
  border: 1px solid rgba(0, 0, 0, 0.04);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-secondary), var(--color-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-left: 4px solid var(--color-accent);
}

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

.service-icon-wrap {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(30, 157, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.service-icon {
  font-size: 1.8rem;
}

.service-card h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
  color: var(--color-primary);
}

.service-card p {
  font-size: 0.95rem;
  color: #666;
  line-height: 1.7;
  margin-bottom: 16px;
}

.service-cta {
  display: none;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
  transition: all var(--transition);
  align-items: center;
  gap: 4px;
}

.service-card:hover .service-cta {
  display: inline-flex;
}

.service-cta svg {
  width: 14px;
  height: 14px;
  margin-left: 4px;
  transition: transform var(--transition);
}

.service-cta:hover svg {
  transform: translateX(4px);
}

/* ============================================================
   10. POR QUÉ
   ============================================================ */
.section-why {
  background: var(--color-primary);
}

.section-why .section-badge {
  color: var(--color-accent);
}

.section-why .section-title {
  color: var(--color-white);
}

.section-why .section-subtitle {
  color: rgba(255, 255, 255, 0.6);
}

.why-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.why-text {
  max-width: 520px;
}

.why-illustration {
  display: flex;
  justify-content: center;
  align-items: center;
}

.why-svg {
  width: 100%;
  max-width: 380px;
  animation: floatSlow 6s ease-in-out infinite;
}

@keyframes floatSlow {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(10px); }
}

.razones-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.razon-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.razon-item:last-child {
  border-bottom: none;
}

.razon-item.slide-in-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: all 0.6s ease;
}

.razon-item.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.razon-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(168, 255, 62, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.razon-item h3 {
  color: var(--color-white);
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.razon-item p {
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ============================================================
   11. PORTAFOLIO
   ============================================================ */
.section-portfolio {
  background: var(--color-white);
}

.grid-portfolio {
  grid-template-columns: repeat(3, 1fr);
  transition: all 0.4s ease;
}

.portafolio-filtros {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.filtro-btn {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 8px 24px;
  border-radius: 50px;
  background: var(--color-bg);
  color: var(--color-neutral);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
}

.filtro-btn.active {
  background: var(--color-secondary);
  color: var(--color-white);
}

.filtro-btn:hover {
  background: rgba(30, 157, 255, 0.15);
}

.portfolio-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  cursor: pointer;
  aspect-ratio: 4 / 3;
  transition: opacity 0.4s ease, transform 0.4s ease;
}

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

.portfolio-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(13, 27, 42, 0.95) 0%, transparent 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  opacity: 0;
  transition: opacity var(--transition);
}

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

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

.portfolio-overlay h3 {
  color: var(--color-white);
  font-size: 1.15rem;
  margin-bottom: 4px;
}

.portfolio-overlay .portfolio-cat-badge {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-primary);
  padding: 2px 10px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.portfolio-overlay .portfolio-ver-mas {
  color: var(--color-accent);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 8px;
}

/* ============================================================
   12. TESTIMONIOS CAROUSEL
   ============================================================ */
.section-testimonials {
  background: var(--color-bg);
}

.carousel {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  overflow: hidden;
}

.carousel-track-container {
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.carousel-track {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.carousel-card {
  min-width: 100%;
  padding: 40px 36px;
  background: var(--color-white);
  text-align: center;
  box-sizing: border-box;
}

.testimonial-quote-icon {
  font-size: 3rem;
  color: var(--color-secondary);
  opacity: 0.2;
  margin-bottom: 8px;
}

.testimonial-text {
  font-size: 1.05rem;
  color: #555;
  line-height: 1.8;
  margin-bottom: 20px;
  font-style: italic;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.testimonial-stars {
  display: flex;
  justify-content: center;
  gap: 3px;
  margin-bottom: 16px;
}

.testimonial-stars .star {
  color: #FFC107;
  font-size: 1rem;
}

.testimonial-stars .star.empty {
  color: #DDD;
}

.testimonial-avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0 auto 12px;
}

.testimonial-name {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-primary);
}

.testimonial-city {
  font-size: 0.85rem;
  color: #999;
}

.carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-white);
  border: 1px solid #eee;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: all var(--transition);
  box-shadow: var(--shadow);
}

.carousel-arrow:hover {
  background: var(--color-secondary);
  color: var(--color-white);
  border-color: var(--color-secondary);
}

.carousel-arrow-prev {
  left: -8px;
}

.carousel-arrow-next {
  right: -8px;
}

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #DDD;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}

.carousel-dot.active {
  background: var(--color-secondary);
  transform: scale(1.2);
}

/* ============================================================
   13. STATS
   ============================================================ */
.section-stats {
  background: linear-gradient(135deg, #0D1B2A 0%, #1E9DFF 100%);
  padding: 80px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.stat-card {
  text-align: center;
  padding: 32px 20px;
}

.stat-card-icon {
  font-size: 2.2rem;
  margin-bottom: 12px;
}

.stat-card-value {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-accent);
  display: block;
}

.stat-card-suffix {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
}

.stat-card-label {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 4px;
}

/* ============================================================
   14. CONTACTO
   ============================================================ */
.section-contact {
  background: linear-gradient(135deg, #1E9DFF 0%, #0D1B2A 100%);
  padding: 100px 0;
  text-align: center;
}

.contact-content {
  max-width: 700px;
  margin: 0 auto;
}

.contact-title {
  font-size: clamp(2rem, 5vw, 3rem);
  color: var(--color-white);
  margin-bottom: 16px;
}

.contact-subtitle {
  color: rgba(255, 255, 255, 0.7);
  font-size: 1.15rem;
  margin-bottom: 40px;
}

.pulse-btn {
  animation: pulseBtn 2s ease-in-out infinite;
}

@keyframes pulseBtn {
  0% { box-shadow: 0 0 0 0 rgba(168, 255, 62, 0.5); }
  100% { box-shadow: 0 0 0 20px rgba(168, 255, 62, 0); }
}

.contact-info-row {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  margin-top: 40px;
}

.contact-info-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
}

.contact-info-item a {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition);
}

.contact-info-item a:hover {
  color: var(--color-accent);
}

.contact-info-icon {
  font-size: 1.1rem;
}

/* ============================================================
   15. FOOTER
   ============================================================ */
.footer {
  background: var(--color-primary);
  padding-top: 60px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-logo-wrap {
  margin-bottom: 16px;
}

.footer-logo {
  width: 44px;
  height: 44px;
  object-fit: contain;
  border-radius: 8px;
}

.footer-logo-fallback {
  width: 44px;
  height: 44px;
  background: var(--color-accent);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.1rem;
  color: var(--color-primary);
}

.footer-tagline {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.9rem;
  max-width: 280px;
  line-height: 1.7;
}

.footer-links h4 {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-links a {
  display: block;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 10px;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--color-accent);
}

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

.social-link {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.social-link:hover {
  background: var(--color-accent);
}

.social-link svg {
  width: 18px;
  height: 18px;
  color: rgba(255, 255, 255, 0.5);
  transition: color var(--transition);
}

.social-link:hover svg {
  color: var(--color-primary);
}

.footer-bottom {
  padding: 20px 0;
}

.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.35);
}

.scroll-top-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
}

.scroll-top-btn:hover {
  background: var(--color-accent);
}

.scroll-top-btn svg {
  width: 20px;
  height: 20px;
  color: rgba(255, 255, 255, 0.5);
  transition: color var(--transition);
}

.scroll-top-btn:hover svg {
  color: var(--color-primary);
}

/* ============================================================
   16. MODAL
   ============================================================ */
.modal {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal.active {
  display: flex;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.modal-content {
  position: relative;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  z-index: 1;
  animation: modalIn 0.3s ease;
}

@keyframes modalIn {
  from {
    transform: scale(0.9);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.1rem;
  border: none;
  transition: all var(--transition);
  z-index: 2;
}

.modal-close:hover {
  background: rgba(0, 0, 0, 0.1);
}

.modal-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.modal-body {
  padding: 28px;
}

.modal-category {
  display: inline-block;
  background: rgba(30, 157, 255, 0.1);
  color: var(--color-secondary);
  padding: 4px 12px;
  border-radius: 50px;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.modal-title {
  font-size: 1.3rem;
  margin-bottom: 12px;
  color: var(--color-primary);
}

.modal-description {
  font-size: 0.95rem;
  color: #666;
  line-height: 1.8;
}

/* ============================================================
   17. WHATSAPP FLOAT
   ============================================================ */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 60px;
  height: 60px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  transition: all var(--transition);
  opacity: 0;
  transform: scale(0);
}

.whatsapp-float.visible {
  opacity: 1;
  transform: scale(1);
  animation: waBounce 0.6s ease;
}

@keyframes waBounce {
  0% { transform: scale(0); }
  60% { transform: scale(1.15); }
  100% { transform: scale(1); }
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.5);
}

.whatsapp-icon {
  width: 28px;
  height: 28px;
  color: var(--color-white);
  position: relative;
  z-index: 2;
}

.whatsapp-ring {
  position: absolute;
  inset: -4px;
  border: 3px solid rgba(37, 211, 102, 0.4);
  border-radius: 50%;
  animation: waRing 2s ease-in-out infinite;
}

@keyframes waRing {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  100% {
    transform: scale(1.4);
    opacity: 0;
  }
}

.whatsapp-tooltip {
  position: absolute;
  right: 72px;
  background: var(--color-primary);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 8px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
  box-shadow: var(--shadow);
}

.whatsapp-tooltip::after {
  content: '';
  position: absolute;
  right: -6px;
  top: 50%;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-left-color: var(--color-primary);
  border-right: none;
}

.whatsapp-float:hover .whatsapp-tooltip {
  opacity: 1;
}

/* ============================================================
   18. FADE-IN ANIMATIONS
   ============================================================ */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.stagger-1 { transition-delay: 0ms; }
.stagger-2 { transition-delay: 100ms; }
.stagger-3 { transition-delay: 200ms; }
.stagger-4 { transition-delay: 300ms; }
.stagger-5 { transition-delay: 400ms; }
.stagger-6 { transition-delay: 500ms; }

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

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

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .why-layout {
    grid-template-columns: 1fr;
  }

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

  .contact-info-row {
    flex-wrap: wrap;
  }
}

/* ============================================================
   20. RESPONSIVE: ≤ 768px
   ============================================================ */
@media (max-width: 768px) {
  :root {
    --navbar-height: 64px;
  }

  /* Navbar hamburger */
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-primary);
    flex-direction: column;
    align-items: flex-start;
    padding: 100px 32px 32px;
    gap: 4px;
    transition: right var(--transition);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.3);
  }

  .nav-menu.open {
    right: 0;
  }

  .nav-link {
    font-size: 1.05rem;
    padding: 12px 16px;
    width: 100%;
    border-radius: 8px;
  }

  .nav-link-cta {
    text-align: center;
    margin-top: 12px;
  }

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

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

  .hero-title {
    font-size: clamp(2rem, 8vw, 3rem);
  }

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

  .stat-divider {
    display: none;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .carousel-arrow {
    position: static;
    transform: none;
  }

  .why-layout {
    grid-template-columns: 1fr;
  }

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

  .section {
    padding: 72px 0;
  }
}

/* ============================================================
   21. RESPONSIVE: ≤ 480px
   ============================================================ */
@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .section {
    padding: 56px 0;
  }

  .hero-stats {
    flex-direction: column;
  }

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

  .btn {
    width: 100%;
    max-width: 280px;
  }

  .whatsapp-float {
    bottom: 20px;
    right: 20px;
    width: 52px;
    height: 52px;
  }

  .whatsapp-icon {
    width: 24px;
    height: 24px;
  }

  .portafolio-filtros {
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding-bottom: 4px;
  }

  .portafolio-filtros::-webkit-scrollbar {
    display: none;
  }

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

  .carousel-card {
    padding: 24px 20px;
  }

  .contact-info-row {
    gap: 16px;
    flex-direction: column;
  }

  .footer-bottom-inner {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}