*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', Arial, sans-serif;
  font-size: 16px;
  color: #444;
  background: #fff;
  line-height: 1.6;
}

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

a {
  color: #4a7c20;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* HEADER Y NAVEGACIÓN */
header {
  background: #2d5016;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  height: 70px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
}

.logo-header {
  height: 48px;
  width: auto;
  object-fit: contain;
  filter: brightness(0) invert(1);
}

.logo-texto {
  color: #fff;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 2px;
}

.logo-texto span {
  color: #7ab648;
}

nav.topnav {
  display: flex;
  gap: 4px;
}

nav.topnav a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  padding: 8px 14px;
  border-radius: 4px;
  text-transform: uppercase;
  transition: background 0.2s, color 0.2s;
}

nav.topnav a:hover,
nav.topnav a[aria-current="page"] {
  background: #cfeaae;
  color: #000;
}

/* HERO */
.hero {
  background: linear-gradient(135deg, #2d5016 0%, #4a7c20 50%, #7ab648 100%);
  color: #fff;
  padding: 80px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
  min-height: 70vh;
  display: flex;
  align-items: center;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('../img/Banner-05.webp') center/cover no-repeat;
  opacity: 0.12;
}

.hero-content {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 2.4rem;
  font-weight: 800;
  margin-bottom: 20px;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  line-height: 1.2;
}

.hero p {
  font-size: 1.15rem;
  opacity: 0.92;
  margin-bottom: 32px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.btn {
  display: inline-block;
  background: #fadead;
  color: #222;
  padding: 14px 36px;
  border-radius: 30px;
  font-weight: 700;
  font-size: 1rem;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(245, 166, 35, 0.4);
  color: #000;
}

/* CONTENEDOR GENERAL */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* SECCIONES */
section {
  padding: 64px 0;
}

section:nth-child(even) {
  background: #f8f9fa;
}

.section-title {
  text-align: center;
  font-size: 1.9rem;
  font-weight: 700;
  color: #2d5016;
  margin-bottom: 12px;
}

.section-subtitle {
  text-align: center;
  color: #444;
  font-size: 1rem;
  margin-bottom: 48px;
}

/* TARJETAS DE SERVICIOS */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.card {
  background: #fff;
  border-radius: 12px;
  padding: 32px 24px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  text-align: center;
  transition: transform 0.25s, box-shadow 0.25s;
  border-top: 4px solid #7ab648;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.13);
}

.card-icon {
  width: 72px;
  height: 72px;
  object-fit: contain;
  margin: 0 auto 20px;
}

.card h3 {
  font-size: 1.15rem;
  color: #2d5016;
  margin-bottom: 12px;
  font-weight: 700;
}

.card p {
  font-size: 0.93rem;
  color: #666;
  line-height: 1.6;
}

/* GRID DE PROYECTOS */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.project-card {
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  background: #fff;
}

.project-card img {
  width: 100%;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  display: block;
  height: 200px;
  object-fit: cover;
  transition: transform 0.35s;
}

.project-card:hover img {
  transform: scale(1.04);
}

.project-card .project-info {
  padding: 20px;
}

.project-card h3 {
  font-size: 1rem;
  color: #2d5016;
  margin-bottom: 8px;
  font-weight: 600;
}

.project-card p {
  font-size: 0.88rem;
  color: #666;
}

/* PÁGINA INTERIOR */
.page-hero {
  background: linear-gradient(120deg, #2d5016, #4a7c20);
  color: #fff;
  padding: 48px 40px;
  text-align: center;
}

.page-hero h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.page-hero p {
  opacity: 0.85;
  font-size: 1.05rem;
}

/* Breadcrumbs */
.breadcrumb {
  background: #f0f4ec;
  padding: 10px 40px;
  font-size: 0.85rem;
  color: #777;
}

.breadcrumb ol {
  list-style: none;
  display: flex;
  gap: 8px;
  max-width: 1100px;
  margin: 0 auto;
}

.breadcrumb li::after {
  content: '›';
  margin-left: 8px;
  color: #aaa;
}

.breadcrumb li:last-child::after {
  content: '';
}

.breadcrumb a {
  color: #4a7c20;
}

/* CONTENIDO INTERIOR */
.page-content {
  max-width: 860px;
  margin: 0 auto;
  padding: 48px 24px;
}

.page-content h2 {
  font-size: 1.4rem;
  color: #2d5016;
  margin: 36px 0 14px;
  padding-left: 14px;
  border-left: 4px solid #7ab648;
}

.page-content p {
  margin-bottom: 18px;
  line-height: 1.75;
  color: #555;
}

.page-content img {
  border-radius: 10px;
  margin: 24px auto;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.1);
}

/* CALCULADORA ELECTRODOMÉSTICOS */
.calc-box {
  background: #f0f4ec;
  border-radius: 10px;
  padding: 28px;
  margin: 28px 0;
}

.calc-box label {
  display: block;
  font-weight: 600;
  color: #2d5016;
  margin-bottom: 10px;
}

.calc-box select {
  padding: 10px 16px;
  border: 2px solid #7ab648;
  border-radius: 6px;
  font-size: 1rem;
  background: #fff;
  cursor: pointer;
  width: 100%;
  max-width: 320px;
}

.calc-result {
  margin-top: 16px;
  font-weight: 600;
  color: #2d5016;
  font-size: 1.05rem;
  min-height: 28px;
}

/* CONTACTO */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

@media (max-width: 700px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

.contact-info p {
  margin-bottom: 16px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.contact-info .icon {
  font-size: 1.3rem;
  margin-top: 2px;
  flex-shrink: 0;
}

.contact-info a {
  color: #4a7c20;
  font-weight: 600;
}

/* CTA STRIP */
.cta-strip {
  background: linear-gradient(135deg, #2d5016, #4a7c20);
  color: #fff;
  text-align: center;
  padding: 56px 24px;
}

.cta-strip h2 {
  font-size: 1.7rem;
  margin-bottom: 12px;
}

.cta-strip p {
  opacity: 0.85;
  margin-bottom: 28px;
  font-size: 1.05rem;
}

/* FOOTER */
footer {
  background: #1a2e0a;
  color: rgba(255, 255, 255, 0.7);
  text-align: center;
  padding: 32px 24px;
  font-size: 0.88rem;
}

footer a {
  color: #7ab648;
}

footer strong {
  color: #fff;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  header {
    padding: 12px 16px;
    height: auto;
    flex-wrap: wrap;
    gap: 8px;
  }

  nav.topnav {
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero {
    padding: 48px 20px;
  }

  .hero h1 {
    font-size: 1.6rem;
  }

  .page-hero {
    padding: 32px 20px;
  }

  .page-hero h1 {
    font-size: 1.5rem;
  }
}