:root {
  --blue-dark: #0053A6;
  --turquoise: #36F0B0;
  --dark: #1A1F2E;
  --white: #FFFFFF;
}

* {
  box-sizing: border-box;
}

html, body {
  width: 100%;
  overflow-x: hidden;
}

body {
  margin: 0;
  font-family: Inter, sans-serif;
  color: var(--dark);
}

h1, h2, h3 {
  font-family: Poppins, sans-serif;
}

.centered-title {
  text-align: center;
}

/* HERO */

.hero {
  min-height: 100vh;
  background: linear-gradient(#1F1C2C, #278BE6);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  text-align: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.6rem;
  max-width: 760px;
  padding: 0 1.5rem;
}

.hero-logo {
  width: 120px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

/* BOTONES */

.btn {
  padding: 0.8rem 1.6rem;
  border-radius: 30px;
  text-decoration: none;
  font-weight: 500;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.3);
}

.primary {
  background: var(--turquoise);
  color: #000;
}

.secondary {
  border: 2px solid var(--white);
  color: var(--white);
}

/* SECCIONES */

section {
  padding: 5rem 8vw;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
}

.service {
  background: linear-gradient(135deg, #1F1C2C, #278BE6);
  color: white;
  padding: 2.2rem;
  border-radius: 20px;
}

/* PROYECTOS */

.project {
  margin-top: 4rem;
}

/* GALERÍA */

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  justify-items: center;
  width: 100%;
}

.gallery img {
  width: 100%;
  max-width: 420px;
  border-radius: 14px;
  cursor: pointer;
}

/* 🔥 FIX CRÍTICO RESPONSIVE 🔥 */
/* Oculta todas */

.gallery.collapsible img {
  display: none;
}

/* Muestra SIEMPRE las primeras 5 */
.gallery.collapsible img:nth-child(-n+2) {
  display: block;
}

/* Cuando JS añade .visible, se muestran */
.gallery.collapsible img.visible {
  display: block;
}

/* BOTÓN VER MÁS */

.toggle-btn {
  margin-top: 1.2rem;
  border: 2px solid var(--blue-dark);
  background: none;
  color: var(--blue-dark);
  padding: 0.6rem 1.4rem;
  border-radius: 24px;
  cursor: pointer;
}

/* ABOUT */

.about {
  background: var(--dark);
  color: var(--white);
  text-align: center;
}

/* CONTACTO */

.contact {
  text-align: center;
}

.contact-icons {
  display: flex;
  justify-content: center;
  gap: 1.6rem;
  margin-top: 2.5rem;
  flex-wrap: wrap;
}

.contact-btn {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-btn svg {
  width: 28px;
  height: 28px;
  fill: white;
}

.contact-btn.gmail {
  background: #EA4335;
}

.contact-btn.whatsapp {
  background: #25D366;
}

.contact-btn.instagram {
  background: linear-gradient(135deg,#F58529,#DD2A7B,#8134AF);
}

/* WHATSAPP FLOAT */

.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #25D366;
  color: white;
  padding: 14px 16px;
  border-radius: 50%;
  font-size: 22px;
  text-decoration: none;
  z-index: 999;
}

/* ANIMACIONES */

.animate {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.animate.visible {
  opacity: 1;
  transform: translateY(0);
}

/* LIGHTBOX */

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  z-index: 9999;
}

.lightbox.active {
  opacity: 1;
  pointer-events: auto;
}

.lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  border-radius: 14px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.6);
}

.lightbox-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: white;
  font-size: 4rem;
  cursor: pointer;
  padding: 0 1rem;
  user-select: none;
}

.lightbox-arrow.prev {
  left: 20px;
}

.lightbox-arrow.next {
  right: 20px;
}