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

    :root {
      --cream: #E8E3D9;
      --dark-red: #8B2F2F;
      --dark: #1a1a1a;
      --text-light: #f5f2ed;
      --accent-red: #9B3535;
      --warm-gray: #C8C1B4;
      --sand: #D4CFC6;
    }

    html, body {
        height: 100%;
    }

    html {
        scroll-behavior: smooth; 
        font-size: clamp(14px, 1vw, 18px);
    }

    body {
      font-family: 'Raleway', sans-serif;
      background: var(--cream);
      color: var(--dark);
      overflow-x: hidden;
      margin: 0;
    }

    /* CONTENEDOR PRINCIPAL */
    .page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    }

    main {
        flex: 1;
    }

    .page-wrapper > *:not(footer) {
    flex-shrink: 0;
    }

    /* ── NAV ── */
    nav {
      position: fixed;
      top: 0; left: 0; right: 0;
      z-index: 100;
      background: var(--cream);
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 5%;
      height: 70px;
      border-bottom: 1px solid rgba(0,0,0,0.08);
    }

    .logo {
      font-family: 'Playfair Display', serif;
      font-size: 1.6rem;
      letter-spacing: 0.02em;
      color: var(--dark);
      text-decoration: none;
      line-height: 1;
    }
    .logo span { font-weight: 400; }
    .logo strong { font-weight: 700; }

    nav ul {
      list-style: none;
      display: flex;
      gap: 3rem;
    }
    nav ul a {
      text-decoration: none;
      font-size: 0.85rem;
      font-weight: 500;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--accent-red);
      transition: opacity 0.2s;
    }
    nav ul a:hover { opacity: 0.6; }

    /* ── BURGER BUTTON ── */
    .burger {
      display: none;
      flex-direction: column;
      justify-content: center;
      gap: 5px;
      width: 36px;
      height: 36px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 4px;
      z-index: 600;
      position: relative;
    }
    .burger span {
      display: block;
      width: 100%;
      height: 2px;
      background: var(--dark);
      border-radius: 2px;
      transition: transform 0.35s ease, opacity 0.25s ease;
      transform-origin: center center;
    }
    .burger.open span {
    background: var(--dark-red); /* o blanco si prefieres contraste */
    }
    .burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .burger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
    .burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    /* ── MOBILE MENU OVERLAY ── */
    .mobile-menu {
      display: none;
      position: fixed;
      inset: 0;
      background: var(--cream);
      z-index: 90;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 2.5rem;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.35s ease;
    }
    .mobile-menu.open {
      opacity: 1;
      pointer-events: all;
    }
    .mobile-menu a {
      text-decoration: none;
      font-family: 'Playfair Display', serif;
      font-size: 2rem;
      color: var(--dark);
      letter-spacing: 0.04em;
      transition: color 0.2s;
    }
    .mobile-menu a:hover { color: var(--accent-red); }
    .mobile-menu .menu-line {
      width: 40px;
      height: 1px;
      background: var(--warm-gray);
    }

    /* ── HERO: solo carrusel ── */
    #inicio {
      margin-top: 70px;
      position: relative;
      height: calc(100vh - 70px);
      max-height: 680px;
      overflow: hidden;
    }

    .hero-carousel {
      width: 100%;
      height: 100%;
      position: relative;
      overflow: hidden;
    }

    .carousel-track {
      display: flex;
      height: 100%;
      transition: transform 0.8s cubic-bezier(0.77, 0, 0.175, 1);
    }

    .slide {
      min-width: 100%;
      height: 100%;
      position: relative;
      overflow: hidden;
    }

    .slide-bg {
      width: 100%; height: 100%;
      object-fit: cover;
      display: block;
    }

    .slide-placeholder {
      width: 100%; height: 100%;
      min-height: 100%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.85rem;
      color: rgba(255,255,255,0.45);
      letter-spacing: 0.1em;
    }

    .slide-1 .slide-placeholder { background: linear-gradient(160deg, #4a7a8a 0%, #2d5060 100%); }
    .slide-2 .slide-placeholder { background: linear-gradient(160deg, #6b5d4f 0%, #3d3028 100%); }
    .slide-3 .slide-placeholder { background: linear-gradient(160deg, #4a6741 0%, #2d3f28 100%); }

    .slide-caption {
      position: absolute;
      bottom: 1.8rem;
      left: 1.8rem;
      color: white;
      font-size: 0.72rem;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      opacity: 0.85;
      background: rgba(0,0,0,0.28);
      padding: 0.35rem 0.75rem;
      backdrop-filter: blur(4px);
    }

    .carousel-btn {
      position: absolute;
      top: 50%; transform: translateY(-50%);
      background: none;
      border: none;
      cursor: pointer;
      z-index: 10;
      padding: 0.75rem;
      opacity: 0.65;
      transition: opacity 0.2s;
    }
    .carousel-btn:hover { opacity: 1; }
    .carousel-btn svg { width: 38px; height: 38px; stroke: white; stroke-width: 1.5; fill: none; }
    .carousel-btn.prev { left: 1rem; }
    .carousel-btn.next { right: 1rem; }

    .carousel-dots {
      position: absolute;
      bottom: 1.4rem;
      right: 1.8rem;
      display: flex;
      gap: 0.45rem;
    }
    .dot {
      width: 7px; height: 7px;
      border-radius: 50%;
      background: rgba(255,255,255,0.35);
      cursor: pointer;
      transition: background 0.3s;
    }
    .dot.active { background: white; }

    /* ── NOSOTROS ── */
    #nosotros {
      background: var(--dark-red);
      padding: 8rem 5%;
      display: flex;
      align-items: center;
      min-height: 60vh;
    }

    .nosotros-inner {
      max-width: 700px;
    }

    .nosotros-inner h2 {
      font-family: 'Playfair Display', serif;
      font-size: clamp(2.5rem, 6vw, 4rem);
      color: var(--text-light);
      margin-bottom: 2rem;
      font-weight: 700;
    }

    .nosotros-inner p {
      font-size: clamp(1rem, 1.8vw, 1.25rem);
      color: rgba(255,255,255,0.88);
      line-height: 1.8;
      font-weight: 300;
    }

    /* ── PROYECTOS ── */
    #proyectos {
    padding: 8rem 5%;
    background: var(--cream);
    }

    /* LAYOUT GENERAL */
    .proyectos-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    align-items: start;
    max-width: 1200px;
    margin: 0 auto;
    }

    /* TEXTO */
    .proyecto-texto {
    max-width: 420px;
    }

    .proyecto-texto p {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    color: var(--dark-red);
    }

    .proyecto-texto h2 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(1.5rem, 3vw, 2.4rem);
    color: var(--dark-red);
    margin-bottom: 0.5rem;
    }

    /* GRID DE PROYECTOS */
    .proyectos-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    }

    /* PROYECTO */
    .proyecto img {
    width: 100%;
    height: auto;
    max-width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    display: block;
    }

    .proyecto p {
    margin-top: 0.8rem;
    font-size: 0.85rem;
    color: var(--dark-red);
    }

    /* 🔥 EFECTO DIAGONAL AUTOMÁTICO */
    .proyecto:nth-child(odd) {
    transform: translateY(-40px);
    }

    .proyecto:nth-child(even) {
    transform: translateY(40px);
    }

    .proyecto {
    transition: transform 0.4s ease;
    }

    @media (max-width: 768px) {
    .proyectos-wrapper {
        grid-template-columns: 1fr;
    }

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

    .proyecto {
        transform: none !important;
    }
    }
    .proyecto-hero {
    padding: 6rem 5% 2rem;
    }

    .proyecto-hero h1 {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    }

    .proyecto-desc {
    max-width: 800px;
    padding: 2rem 5%;
    line-height: 1.8;
    }

    .proyecto-galeria {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    padding: 2rem 5%;
    }

    .proyecto-galeria img {
    width: 100%;
    display: block;
    }

    /* ── SERVICIOS ── */
    #servicios {
      background: var(--dark);
      padding: 8rem 5%;
    }

    .servicios-header {
      margin-bottom: 5rem;
    }
    .servicios-header h2 {
      font-family: 'Playfair Display', serif;
      font-size: clamp(2rem, 5vw, 3.2rem);
      color: var(--cream);
      border-bottom: 1px solid rgba(255,255,255,0.12);
      padding-bottom: 1.5rem;
    }

    .servicios-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 0;
    }

    .servicio-item {
      padding: 3rem 3rem 3rem 0;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .servicio-item:nth-child(even) {
      padding-left: 3rem;
      border-left: 1px solid rgba(255,255,255,0.08);
      padding-right: 0;
    }

    .servicio-num {
      font-size: 0.7rem;
      color: var(--dark-red);
      letter-spacing: 0.15em;
      text-transform: uppercase;
      margin-bottom: 1rem;
      font-weight: 600;
    }

    .servicio-name {
      font-family: 'Playfair Display', serif;
      font-size: 1.5rem;
      color: var(--cream);
      margin-bottom: 1rem;
      font-weight: 700;
    }

    .servicio-desc {
      font-size: 0.9rem;
      color: rgba(255,255,255,0.55);
      line-height: 1.8;
      font-weight: 300;
      max-width: 380px;
    }

    /* ── CONTACTO ── */
    #contacto {
      background: var(--cream);
      padding: 7rem 5%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 3rem;
    }

    .contacto-left h2 {
      font-family: 'Playfair Display', serif;
      font-size: clamp(2rem, 5vw, 3.5rem);
      color: var(--dark);
      line-height: 1.15;
      margin-bottom: 1.5rem;
    }
    .contacto-left p {
      font-size: 1rem;
      color: rgba(26,26,26,0.6);
      line-height: 1.7;
      max-width: 420px;
    }

    .contacto-right {
      flex-shrink: 0;
    }

    .ig-btn {
      display: inline-flex;
      align-items: center;
      gap: 1rem;
      padding: 1.1rem 2.4rem;
      background: var(--dark-red);
      color: white;
      text-decoration: none;
      font-size: 0.85rem;
      font-weight: 600;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      transition: background 0.3s, transform 0.2s;
    }
    .ig-btn:hover {
      background: #6b2020;
      transform: translateY(-2px);
    }
    .ig-btn svg {
      width: 20px; height: 20px;
      stroke: white; fill: none;
      stroke-width: 1.5;
    }

    .wsp-icon {
        width: 50px; height: 50px;
    }

    /* ── FOOTER ── */
    footer {
      background: var(--dark);
      padding: 2rem 5%;
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-top: auto;
    }
    footer .logo { color: var(--cream); font-size: 1.1rem; }
    footer p { font-size: 0.75rem; color: rgba(255,255,255,0.3); letter-spacing: 0.05em; }

    /* ── RESPONSIVE ── */
    @media (max-width: 768px) {
      nav ul { display: none; }
      .burger { display: flex; }
      .mobile-menu { display: flex; }
      .logo { font-size: 1.3rem; }
      .projects-grid { grid-template-columns: 1fr; gap: 2rem; }
      .project-card:nth-child(even) { margin-top: 0; }
      .servicios-list { grid-template-columns: 1fr; }
      .servicio-item:nth-child(even) { padding-left: 0; border-left: none; }
      #contacto { flex-direction: column; }
      footer { flex-direction: column; gap: 0.5rem; text-align: center; }
    }

    /* fade-in on scroll */
    .reveal {
      opacity: 0;
      transform: translateY(28px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .reveal.visible {
      opacity: 1;
      transform: none;
    }

    .dev-sign {
    margin-top: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    opacity: 0.6;
    transition: opacity 0.3s ease;
    }

    .dev-sign:hover {
    opacity: 1;
    }

    .dev-sign span {
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    color: var(--warm-gray);
    }

    .dev-sign img {
    height: 30px;
    width: auto;
    object-fit: contain;
    }