/* =============================================
       VARIABLES — cambia estos colores si quieres
       ajustar la paleta en un solo lugar
    ============================================= */
    :root {
      --verde-oscuro:  #1a3a2a;
      --verde-medio:   #2d6a4f;
      --verde-claro:   #52b788;
      --tierra:        #b5803a;
      --crema:         #f4f0e6;
      --blanco:        #fdfcf8;
      --texto-oscuro:  #1a2218;
      --texto-suave:   #4a5e45;
      --fuente-titulo: 'Playfair Display', serif;
      --fuente-cuerpo: 'DM Sans', sans-serif;
      --radio:         12px;
      --sombra:        0 4px 24px rgba(26,58,42,0.10);
    }

    /* =============================================
       RESET Y BASE
    ============================================= */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: var(--fuente-cuerpo);
      background: var(--blanco);
      color: var(--texto-oscuro);
      line-height: 1.7;
      font-size: 16px;
    }
    img { display: block; max-width: 100%; }
    a  { color: inherit; text-decoration: none; }

    /* =============================================
       UTILIDADES
    ============================================= */
    .contenedor {
      width: 90%;
      max-width: 1100px;
      margin: 0 auto;
    }
    .etiqueta {
      display: inline-block;
      background: var(--verde-claro);
      color: var(--verde-oscuro);
      font-size: 0.75rem;
      font-weight: 500;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      padding: 4px 14px;
      border-radius: 999px;
      margin-bottom: 16px;
    }
    .btn {
      display: inline-block;
      padding: 14px 32px;
      border-radius: var(--radio);
      font-family: var(--fuente-cuerpo);
      font-size: 0.95rem;
      font-weight: 500;
      cursor: pointer;
      transition: transform 0.2s, box-shadow 0.2s;
    }
    .btn:hover { transform: translateY(-2px); box-shadow: var(--sombra); }
    .btn-primario  { background: var(--verde-medio); color: var(--blanco); }
    .btn-secundario{ background: transparent; color: var(--verde-medio); border: 2px solid var(--verde-medio); }

    /* =============================================
       NAVBAR
    ============================================= */
    nav {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(253,252,248,0.92);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid rgba(45,106,79,0.12);
      padding: 16px 0;
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }
    .logo {
      font-family: var(--fuente-titulo);
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--verde-oscuro);
    }
    .logo span { color: var(--tierra); }
    .nav-links {
      display: flex;
      gap: 28px;
      list-style: none;
    }
    .nav-links a {
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--texto-suave);
      transition: color 0.2s;
    }
    .nav-links a:hover { color: var(--verde-medio); }
    .nav-cta { font-size: 0.85rem; padding: 10px 22px; }

    /* Hamburguesa (móvil) */
    .hamburguesa {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      background: none;
      border: none;
      padding: 4px;
    }
    .hamburguesa span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--verde-oscuro);
      border-radius: 2px;
      transition: 0.3s;
    }

    /* =============================================
       HERO
    ============================================= */
    .hero {
      min-height: 92vh;
      display: flex;
      align-items: center;
      background:
        linear-gradient(to bottom, rgba(26,58,42,0.72) 0%, rgba(26,58,42,0.45) 60%, rgba(253,252,248,1) 100%),
        /* 📸 REEMPLAZA esta URL con una imagen real del proyecto */
        url('https://images.unsplash.com/photo-1542601906990-b4d3fb778b09?w=1600&q=80') center/cover no-repeat;
      padding: 120px 0 80px;
      position: relative;
    }
    .hero-contenido {
      max-width: 680px;
    }
    .hero h1 {
      font-family: var(--fuente-titulo);
      font-size: clamp(2.2rem, 6vw, 4rem);
      font-weight: 900;
      color: var(--blanco);
      line-height: 1.15;
      margin-bottom: 20px;
    }
    .hero h1 em {
      font-style: normal;
      color: var(--verde-claro);
    }
    .hero p {
      font-size: 1.1rem;
      color: rgba(255,255,255,0.88);
      max-width: 520px;
      margin-bottom: 36px;
    }
    .hero-botones { display: flex; gap: 14px; flex-wrap: wrap; }

    /* =============================================
       SECCIÓN: SOBRE NOSOTROS
    ============================================= */
    .sobre {
      padding: 100px 0;
      background: var(--blanco);
    }
    .sobre-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 64px;
      align-items: center;
    }
    .sobre-imagen {
      position: relative;
    }
    .sobre-imagen img {
      width: 100%;
      border-radius: 20px;
      object-fit: cover;
      height: 420px;
      /* 📸 REEMPLAZA src con imagen real */
    }
    .sobre-imagen::before {
      content: '';
      position: absolute;
      inset: -16px -16px auto auto;
      width: 60%;
      height: 60%;
      background: var(--verde-claro);
      opacity: 0.18;
      border-radius: 20px;
      z-index: -1;
    }
    .sobre-texto h2 {
      font-family: var(--fuente-titulo);
      font-size: clamp(1.8rem, 4vw, 2.6rem);
      font-weight: 700;
      color: var(--verde-oscuro);
      line-height: 1.25;
      margin-bottom: 20px;
    }
    .sobre-texto p {
      color: var(--texto-suave);
      margin-bottom: 16px;
    }

    /* =============================================
       SECCIÓN: OBJETIVO
    ============================================= */
    .objetivo {
      background: var(--verde-oscuro);
      padding: 90px 0;
      text-align: center;
    }
    .objetivo .etiqueta {
      background: var(--verde-claro);
      color: var(--verde-oscuro);
    }
    .objetivo h2 {
      font-family: var(--fuente-titulo);
      font-size: clamp(1.8rem, 4vw, 2.8rem);
      color: var(--blanco);
      margin-bottom: 20px;
      max-width: 700px;
      margin-left: auto;
      margin-right: auto;
      line-height: 1.25;
    }
    .objetivo p {
      color: rgba(255,255,255,0.75);
      max-width: 580px;
      margin: 0 auto 40px;
      font-size: 1.05rem;
    }
    .objetivo-cifras {
      display: flex;
      justify-content: center;
      gap: 48px;
      flex-wrap: wrap;
      margin-top: 56px;
    }
    .cifra {
      text-align: center;
    }
    .cifra-numero {
      font-family: var(--fuente-titulo);
      font-size: 3rem;
      font-weight: 900;
      color: var(--verde-claro);
      line-height: 1;
    }
    .cifra-label {
      font-size: 0.85rem;
      color: rgba(255,255,255,0.65);
      margin-top: 6px;
      text-transform: uppercase;
      letter-spacing: 0.08em;
    }

    /* =============================================
       SECCIÓN: SERVICIOS / TRABAJO
    ============================================= */
    .servicios {
      padding: 100px 0;
      background: var(--crema);
    }
    .servicios-header { text-align: center; margin-bottom: 56px; }
    .servicios-header h2 {
      font-family: var(--fuente-titulo);
      font-size: clamp(1.8rem, 4vw, 2.6rem);
      color: var(--verde-oscuro);
      margin-bottom: 14px;
    }
    .servicios-header p {
      color: var(--texto-suave);
      max-width: 500px;
      margin: 0 auto;
    }
    .cards-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 24px;
    }
    .card {
      background: var(--blanco);
      border-radius: 16px;
      padding: 36px 28px;
      box-shadow: var(--sombra);
      transition: transform 0.25s;
    }
    .card:hover { transform: translateY(-6px); }
    .card-icono {
      width: 52px;
      height: 52px;
      background: rgba(82,183,136,0.15);
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      font-size: 1.6rem;
    }
    .card h3 {
      font-family: var(--fuente-titulo);
      font-size: 1.15rem;
      color: var(--verde-oscuro);
      margin-bottom: 10px;
    }
    .card p {
      font-size: 0.9rem;
      color: var(--texto-suave);
      line-height: 1.6;
    }

    /* =============================================
       SECCIÓN: GALERÍA / PROYECTOS
    ============================================= */
    .galeria {
      padding: 100px 0;
      background: var(--blanco);
    }
    .galeria-header { text-align: center; margin-bottom: 48px; }
    .galeria-header h2 {
      font-family: var(--fuente-titulo);
      font-size: clamp(1.8rem, 4vw, 2.6rem);
      color: var(--verde-oscuro);
      margin-bottom: 12px;
    }
    .galeria-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      grid-template-rows: auto auto;
      gap: 16px;
    }
    .galeria-item {
      border-radius: 14px;
      overflow: hidden;
      background: var(--crema);
      position: relative;
      min-height: 200px;
    }
    .galeria-item.grande {
      grid-column: span 2;
      min-height: 300px;
    }
    .galeria-item img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      /* 📸 REEMPLAZA src con fotos reales de los proyectos */
    }
    .galeria-placeholder {
      width: 100%;
      height: 100%;
      min-height: inherit;
      background: linear-gradient(135deg, rgba(82,183,136,0.15), rgba(181,128,58,0.10));
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 8px;
      color: var(--texto-suave);
      font-size: 0.85rem;
    }
    .galeria-placeholder span { font-size: 2rem; }

    /* =============================================
       SECCIÓN: EDUCACIÓN AMBIENTAL
    ============================================= */
    .educacion {
      padding: 100px 0;
      background: var(--crema);
    }
    .educacion-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 64px;
      align-items: center;
    }
    .educacion-texto h2 {
      font-family: var(--fuente-titulo);
      font-size: clamp(1.8rem, 4vw, 2.6rem);
      color: var(--verde-oscuro);
      margin-bottom: 20px;
      line-height: 1.25;
    }
    .educacion-texto p {
      color: var(--texto-suave);
      margin-bottom: 16px;
    }
    .lista-edu {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin: 24px 0;
    }
    .lista-edu li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 0.95rem;
      color: var(--texto-suave);
    }
    .lista-edu li::before {
      content: '✦';
      color: var(--tierra);
      flex-shrink: 0;
      margin-top: 2px;
    }
    .educacion-visual {
      background: var(--verde-oscuro);
      border-radius: 20px;
      padding: 48px 40px;
      color: var(--blanco);
    }
    .educacion-visual h3 {
      font-family: var(--fuente-titulo);
      font-size: 1.4rem;
      margin-bottom: 16px;
      color: var(--verde-claro);
    }
    .educacion-visual p {
      font-size: 0.9rem;
      color: rgba(255,255,255,0.75);
      line-height: 1.7;
    }

    /* =============================================
       SECCIÓN: CONTACTO
    ============================================= */
    .contacto {
      padding: 100px 0;
      background: var(--blanco);
    }
    .contacto-inner {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 64px;
      align-items: start;
    }
    .contacto-info h2 {
      font-family: var(--fuente-titulo);
      font-size: clamp(1.8rem, 4vw, 2.6rem);
      color: var(--verde-oscuro);
      margin-bottom: 16px;
    }
    .contacto-info p {
      color: var(--texto-suave);
      margin-bottom: 32px;
    }
    .dato-contacto {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 18px;
    }
    .dato-icono {
      width: 42px;
      height: 42px;
      border-radius: 10px;
      background: rgba(82,183,136,0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      flex-shrink: 0;
    }
    .dato-texto small {
      display: block;
      font-size: 0.75rem;
      color: var(--texto-suave);
      text-transform: uppercase;
      letter-spacing: 0.08em;
    }
    .dato-texto strong {
      font-size: 0.95rem;
      color: var(--verde-oscuro);
    }
    /* Formulario */
    .form-contacto {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .form-fila { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .campo {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .campo label {
      font-size: 0.82rem;
      font-weight: 500;
      color: var(--texto-suave);
      text-transform: uppercase;
      letter-spacing: 0.07em;
    }
    .campo input,
    .campo textarea {
      padding: 13px 16px;
      border: 1.5px solid rgba(45,106,79,0.2);
      border-radius: var(--radio);
      font-family: var(--fuente-cuerpo);
      font-size: 0.95rem;
      color: var(--texto-oscuro);
      background: var(--crema);
      outline: none;
      transition: border-color 0.2s;
      resize: vertical;
    }
    .campo input:focus,
    .campo textarea:focus { border-color: var(--verde-medio); }
    .campo textarea { min-height: 120px; }
    .btn-enviar {
      width: 100%;
      padding: 15px;
      background: var(--verde-medio);
      color: var(--blanco);
      border: none;
      border-radius: var(--radio);
      font-family: var(--fuente-cuerpo);
      font-size: 1rem;
      font-weight: 500;
      cursor: pointer;
      transition: background 0.2s, transform 0.2s;
    }
    .btn-enviar:hover { background: var(--verde-oscuro); transform: translateY(-2px); }

    /* =============================================
       FOOTER
    ============================================= */
    footer {
      background: var(--verde-oscuro);
      color: rgba(255,255,255,0.65);
      padding: 48px 0 28px;
    }
    .footer-inner {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      gap: 32px;
      flex-wrap: wrap;
      margin-bottom: 40px;
    }
    .footer-marca .logo { color: var(--blanco); margin-bottom: 10px; }
    .footer-marca p { font-size: 0.85rem; max-width: 260px; }
    .footer-links h4 {
      color: var(--blanco);
      font-size: 0.85rem;
      text-transform: uppercase;
      letter-spacing: 0.1em;
      margin-bottom: 14px;
    }
    .footer-links ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
    .footer-links a { font-size: 0.85rem; transition: color 0.2s; }
    .footer-links a:hover { color: var(--verde-claro); }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.1);
      padding-top: 20px;
      text-align: center;
      font-size: 0.8rem;
    }

    /* =============================================
       RESPONSIVE — MÓVIL
    ============================================= */
    @media (max-width: 768px) {
      .hamburguesa { display: flex; }
      .nav-links, .nav-cta {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        width: 100%;
        background: var(--blanco);
        padding: 20px;
        border-bottom: 1px solid rgba(45,106,79,0.12);
        box-shadow: var(--sombra);
      }
      .nav-links.abierto, .nav-cta.abierto {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
      }
      .nav-cta.abierto { top: auto; border: none; box-shadow: none; padding-top: 0; }
      .nav-inner { position: relative; }

      .hero { min-height: 85vh; padding: 100px 0 60px; }
      .sobre-grid,
      .educacion-grid,
      .contacto-inner { grid-template-columns: 1fr; gap: 40px; }
      .galeria-grid { grid-template-columns: 1fr 1fr; }
      .galeria-item.grande { grid-column: span 2; }
      .objetivo-cifras { gap: 32px; }
      .form-fila { grid-template-columns: 1fr; }
    }

    @media (max-width: 480px) {
      .galeria-grid { grid-template-columns: 1fr; }
      .galeria-item.grande { grid-column: span 1; }
      .hero-botones { flex-direction: column; }
      .btn { text-align: center; }
    }