/* ===== RESET & BASE ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body { font-family: 'Open Sans', sans-serif; color: #222; background: #fff; overflow-x: hidden; }

    /* ===== CSS VARIABLES ===== */
    :root {
      --orange: #F97316;
      --orange-dark: #C2510A;
      --orange-light: #FED7AA;
      --dark: #1a1a1a;
      --dark2: #2a2a2a;
      --gray: #f5f5f5;
      --gray2: #e8e8e8;
      --text: #333;
      --white: #fff;
      --shadow: 0 8px 32px rgba(0,0,0,0.12);
      --shadow-orange: 0 4px 20px rgba(249,115,22,0.35);
    }

    /* ===== NAVBAR ===== */
    nav {
      position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
      background: var(--dark);
      display: flex; align-items: center; justify-content: space-between;
      padding: 0 5%; height: 68px;
      box-shadow: 0 2px 16px rgba(0,0,0,0.4);
      transition: all .3s;
    }
    nav.scrolled { height: 58px; background: rgba(26,26,26,0.97); backdrop-filter: blur(8px); }
    .nav-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
    .nav-logo .logo-icon {
      width: 44px; height: 44px; background: var(--orange);
      border-radius: 10px; display: flex; align-items: center; justify-content: center;
      font-size: 22px; box-shadow: var(--shadow-orange);
    }
    .nav-logo .logo-text { line-height: 1; }
    .nav-logo .logo-text span:first-child {
      display: block; font-family: 'Montserrat', sans-serif;
      font-weight: 900; font-size: 20px; color: var(--white); letter-spacing: 1px;
    }
    .nav-logo .logo-text span:last-child {
      display: block; font-size: 10px; color: var(--orange); font-weight: 600; letter-spacing: 2px;
    }
    .nav-links { display: flex; align-items: center; gap: 28px; list-style: none; }
    .nav-links a {
      color: var(--white); text-decoration: none; font-family: 'Montserrat', sans-serif;
      font-size: 13px; font-weight: 600; letter-spacing: .5px; text-transform: uppercase;
      transition: color .2s; position: relative;
    }
    .nav-links a::after {
      content: ''; position: absolute; bottom: -4px; left: 0; right: 0; height: 2px;
      background: var(--orange); transform: scaleX(0); transition: transform .2s;
    }
    .nav-links a:hover { color: var(--orange); }
    .nav-links a:hover::after { transform: scaleX(1); }
    .nav-phone {
      display: flex; align-items: center; gap: 8px; color: var(--white);
      font-family: 'Montserrat', sans-serif; font-weight: 700; font-size: 14px;
    }
    .nav-phone i { color: var(--orange); }
    .nav-cta {
      background: var(--orange); color: var(--white); border: none; border-radius: 50px;
      padding: 9px 20px; font-family: 'Montserrat', sans-serif; font-weight: 700;
      font-size: 13px; cursor: pointer; box-shadow: var(--shadow-orange);
      transition: transform .2s, box-shadow .2s;
    }
    .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 6px 24px rgba(249,115,22,.5); }
    .hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 5px; }
    .hamburger span { display: block; width: 25px; height: 2px; background: var(--white); border-radius: 2px; transition: all .3s; }
    .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
    .hamburger.active span:nth-child(2) { opacity: 0; }
    .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

    /* Mobile Menu */
    .mobile-menu {
      display: none; position: fixed; top: 68px; left: 0; right: 0; z-index: 999;
      background: var(--dark2); padding: 20px 5%; flex-direction: column; gap: 16px;
      box-shadow: 0 8px 24px rgba(0,0,0,.4);
    }
    .mobile-menu.open { display: flex; }
    .mobile-menu a {
      color: var(--white); text-decoration: none; font-family: 'Montserrat', sans-serif;
      font-weight: 600; font-size: 15px; padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,.08);
    }
    .mobile-menu a:hover { color: var(--orange); }
    .mobile-menu .mob-phone { color: var(--orange); font-weight: 700; }

    /* ===== HERO ===== */
    #inicio {
      min-height: 100vh; background: linear-gradient(135deg, var(--dark) 0%, #2d1a0a 60%, #1a1a1a 100%);
      display: flex; align-items: center; position: relative; overflow: hidden;
      padding: 100px 5% 60px;
    }
    #inicio::before {
      content: ''; position: absolute; inset: 0;
      background: radial-gradient(ellipse at 70% 50%, rgba(249,115,22,.18) 0%, transparent 60%);
    }
    /* Geometric decorative shapes */
    #inicio::after {
      content: ''; position: absolute; right: -100px; bottom: -100px;
      width: 500px; height: 500px; border-radius: 50%;
      border: 60px solid rgba(249,115,22,.07); pointer-events: none;
    }
    .hero-inner {
      max-width: 1200px; margin: 0 auto; width: 100%;
      display: flex; align-items: center; justify-content: space-between; gap: 40px;
      position: relative; z-index: 2;
    }
    .hero-text { flex: 1; max-width: 520px; }
    .hero-badge {
      display: inline-block; background: rgba(249,115,22,.15); border: 1px solid rgba(249,115,22,.4);
      color: var(--orange); font-family: 'Montserrat',sans-serif; font-weight: 700;
      font-size: 11px; letter-spacing: 2px; text-transform: uppercase;
      padding: 6px 14px; border-radius: 50px; margin-bottom: 20px;
      animation: fadeInUp .6s ease both;
    }
    .hero-title {
      font-family: 'Montserrat', sans-serif; font-weight: 900;
      font-size: clamp(36px, 5vw, 62px); line-height: 1.1; color: var(--white);
      margin-bottom: 8px; animation: fadeInUp .7s ease both;
    }
    .hero-title .highlight { color: var(--orange); }
    .hero-subtitle {
      font-family: 'Montserrat', sans-serif; font-weight: 700;
      font-size: clamp(16px, 2vw, 22px); color: rgba(255,255,255,.7);
      margin-bottom: 28px; animation: fadeInUp .8s ease both;
    }
    .hero-checks { list-style: none; margin-bottom: 36px; animation: fadeInUp .9s ease both; }
    .hero-checks li {
      display: flex; align-items: center; gap: 10px; color: var(--white);
      font-size: 16px; font-weight: 600; margin-bottom: 10px;
    }
    .hero-checks li i { color: var(--orange); font-size: 18px; }
    .hero-btns {
      display: flex; gap: 14px; flex-wrap: wrap;
      animation: fadeInUp 1s ease both;
    }
    .btn-primary {
      background: var(--orange); color: var(--white);
      padding: 14px 30px; border-radius: 50px; font-family: 'Montserrat', sans-serif;
      font-weight: 800; font-size: 14px; text-transform: uppercase; letter-spacing: .5px;
      text-decoration: none; box-shadow: var(--shadow-orange);
      transition: transform .2s, box-shadow .2s; display: inline-flex; align-items: center; gap: 8px;
    }
    .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 28px rgba(249,115,22,.55); }
    .btn-secondary {
      background: transparent; color: var(--white); border: 2px solid rgba(255,255,255,.4);
      padding: 12px 28px; border-radius: 50px; font-family: 'Montserrat', sans-serif;
      font-weight: 700; font-size: 14px; text-transform: uppercase;
      text-decoration: none; transition: all .2s; display: inline-flex; align-items: center; gap: 8px;
    }
    .btn-secondary:hover { border-color: var(--orange); color: var(--orange); }
    .hero-visual {
      flex: 1; max-width: 460px; display: flex; justify-content: center; align-items: center;
      position: relative; animation: fadeInRight .9s ease both;
    }
    .hero-logo-box {
      width: 340px; height: 340px; position: relative; display: flex; align-items: center; justify-content: center;
    }
    .hero-logo-ring {
      position: absolute; inset: 0; border-radius: 50%;
      border: 3px solid rgba(249,115,22,.3);
      animation: spin 12s linear infinite;
    }
    .hero-logo-ring::before {
      content: ''; position: absolute; top: 10px; left: 50%; transform: translateX(-50%);
      width: 12px; height: 12px; border-radius: 50%; background: var(--orange);
    }
    .hero-center-box {
      width: 240px; height: 240px; background: linear-gradient(135deg, #2a2a2a, #1a1a1a);
      border-radius: 24px; display: flex; flex-direction: column;
      align-items: center; justify-content: center; gap: 8px;
      box-shadow: 0 20px 60px rgba(0,0,0,.5), 0 0 40px rgba(249,115,22,.15);
      border: 2px solid rgba(249,115,22,.2);
    }
    .service-icons-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 12px; }
    .svc-icon-box {
      width: 54px; height: 54px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
      font-size: 22px; transition: transform .2s;
    }
    .svc-icon-box:hover { transform: scale(1.1); }
    .svc-icon-box.blue { background: linear-gradient(135deg, #1565C0, #0D47A1); color: #fff; }
    .svc-icon-box.amber { background: linear-gradient(135deg, #F57F17, #E65100); color: #fff; }
    .svc-icon-box.red { background: linear-gradient(135deg, #B71C1C, #7f1717); color: #fff; }
    .svc-icon-box.orange { background: linear-gradient(135deg, #E64A19, #BF360C); color: #fff; }
    .hero-brand-name {
      font-family: 'Montserrat', sans-serif; font-weight: 900; font-size: 20px;
      color: var(--white); letter-spacing: 2px;
    }
    .hero-brand-sub { font-size: 10px; color: var(--orange); letter-spacing: 3px; font-weight: 700; }

    /* Stats bar */
    .stats-bar {
      background: var(--dark2); border-top: 1px solid rgba(249,115,22,.2);
      padding: 20px 5%;
    }
    .stats-inner {
      max-width: 1200px; margin: 0 auto;
      display: flex; justify-content: space-around; gap: 20px; flex-wrap: wrap;
    }
    .stat-item { text-align: center; }
    .stat-num {
      font-family: 'Montserrat', sans-serif; font-weight: 900;
      font-size: 28px; color: var(--orange);
    }
    .stat-label { font-size: 12px; color: rgba(255,255,255,.6); font-weight: 600; text-transform: uppercase; letter-spacing: 1px; }

    /* ===== SECTION COMMONS ===== */
    section { padding: 80px 5%; }
    .section-header { text-align: center; margin-bottom: 52px; }
    .section-tag {
      display: inline-block; background: rgba(249,115,22,.1); color: var(--orange);
      font-family: 'Montserrat',sans-serif; font-weight: 700; font-size: 11px;
      letter-spacing: 2px; text-transform: uppercase; padding: 5px 14px; border-radius: 50px;
      margin-bottom: 12px;
    }
    .section-title {
      font-family: 'Montserrat', sans-serif; font-weight: 900;
      font-size: clamp(28px, 4vw, 44px); color: var(--dark); margin-bottom: 12px;
    }
    .section-sub { color: #666; font-size: 16px; max-width: 500px; margin: 0 auto; }
    .title-underline {
      width: 60px; height: 4px; background: var(--orange); border-radius: 2px;
      margin: 12px auto 0; border-radius: 10px;
    }

    /* ===== SERVICES ===== */
    #servicios { background: var(--gray); }
    .services-grid {
      max-width: 1200px; margin: 0 auto;
      display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px;
    }
    .service-card {
      background: var(--white); border-radius: 20px; overflow: hidden;
      box-shadow: 0 4px 20px rgba(0,0,0,.07); transition: transform .3s, box-shadow .3s;
      cursor: default;
    }
    .service-card:hover { transform: translateY(-8px); box-shadow: 0 16px 40px rgba(0,0,0,.14); }
    .service-card-img {
      height: 160px; display: flex; align-items: center; justify-content: center; font-size: 56px;
      position: relative; overflow: hidden;
    }
    .service-card-img.blue { background: linear-gradient(135deg, #1565C0 0%, #0D47A1 100%); }
    .service-card-img.amber { background: linear-gradient(135deg, #F9A825 0%, #E65100 100%); }
    .service-card-img.red { background: linear-gradient(135deg, #C62828 0%, #B71C1C 100%); }
    .service-card-img.orange2 { background: linear-gradient(135deg, #F4511E 0%, #BF360C 100%); }
    .service-card-img::after {
      content: ''; position: absolute; inset: 0;
      background: linear-gradient(to bottom, transparent 40%, rgba(0,0,0,.3));
    }
    .service-card-img span {
      position: relative; z-index: 1;
      color: #fff; font-family: 'Montserrat', sans-serif; font-weight: 800; font-size: 22px;
      text-align: center; padding: 0 12px; text-shadow: 0 2px 8px rgba(0,0,0,.5);
    }
    .service-card-body { padding: 20px; }
    .service-card-body p { color: #666; font-size: 14px; line-height: 1.6; margin-bottom: 16px; }
    .btn-card {
      display: inline-flex; align-items: center; gap: 6px;
      color: var(--orange); font-family: 'Montserrat',sans-serif; font-weight: 700;
      font-size: 13px; text-decoration: none; transition: gap .2s;
    }
    .btn-card:hover { gap: 10px; }

    /* ===== NOSOTROS ===== */
    #nosotros { background: var(--white); }
    .about-inner {
      max-width: 1200px; margin: 0 auto;
      display: flex; gap: 60px; align-items: center; flex-wrap: wrap;
    }
    .about-visual { flex: 1; min-width: 280px; }
    .about-img-wrap {
      position: relative; border-radius: 24px; overflow: hidden;
      background: linear-gradient(135deg, var(--dark) 0%, #2d1a0a 100%);
      padding: 40px; text-align: center; box-shadow: var(--shadow);
    }
    .about-icon-big { font-size: 80px; display: block; margin-bottom: 16px; }
    .about-img-wrap h3 {
      font-family: 'Montserrat', sans-serif; font-weight: 900; font-size: 24px;
      color: var(--white); margin-bottom: 6px;
    }
    .about-img-wrap p { color: rgba(255,255,255,.6); font-size: 13px; }
    .about-badge-float {
      position: absolute; top: -12px; right: -12px;
      background: var(--orange); color: var(--white); border-radius: 50%;
      width: 80px; height: 80px; display: flex; flex-direction: column;
      align-items: center; justify-content: center;
      font-family: 'Montserrat', sans-serif; font-weight: 900;
      box-shadow: var(--shadow-orange);
    }
    .about-badge-float .years { font-size: 26px; line-height: 1; }
    .about-badge-float .label { font-size: 9px; letter-spacing: 1px; text-align: center; line-height: 1.2; }
    .about-content { flex: 1.2; min-width: 280px; }
    .about-content h2 {
      font-family: 'Montserrat', sans-serif; font-weight: 900;
      font-size: clamp(26px, 3.5vw, 40px); color: var(--dark); margin-bottom: 16px; line-height: 1.2;
    }
    .about-content h2 span { color: var(--orange); }
    .about-content p { color: #555; line-height: 1.8; margin-bottom: 16px; font-size: 15px; }
    .about-features { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 24px 0; }
    .about-feat {
      display: flex; align-items: flex-start; gap: 10px;
      background: var(--gray); border-radius: 12px; padding: 14px;
    }
    .about-feat i { color: var(--orange); font-size: 20px; margin-top: 2px; flex-shrink: 0; }
    .about-feat span { font-size: 13px; font-weight: 600; color: var(--dark); }

    /* ===== CLIENTS LOGOS ===== */
    #clientes { background: var(--gray); overflow: hidden; padding: 60px 5%; }
    .clients-track-wrap { max-width: 1200px; margin: 0 auto; overflow: hidden; }
    .clients-track {
      display: flex; align-items: center; gap: 48px;
      animation: marquee 18s linear infinite; width: max-content;
    }
    .client-logo {
      background: var(--white); border-radius: 12px; padding: 14px 24px;
      font-family: 'Montserrat', sans-serif; font-weight: 800; font-size: 16px;
      color: var(--dark); white-space: nowrap; box-shadow: 0 2px 12px rgba(0,0,0,.07);
      display: flex; align-items: center; gap: 6px; flex-shrink: 0;
    }
    .client-logo i { color: var(--orange); }

    /* ===== PROJECTS ===== */
    #proyectos { background: var(--white); }
    .projects-grid {
      max-width: 1200px; margin: 0 auto;
      display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 24px;
    }
    .project-card {
      border-radius: 18px; overflow: hidden; box-shadow: 0 4px 20px rgba(0,0,0,.08);
      transition: transform .3s, box-shadow .3s; cursor: default;
    }
    .project-card:hover { transform: translateY(-6px); box-shadow: 0 14px 40px rgba(0,0,0,.15); }
    .project-img {
      height: 180px; display: flex; align-items: center; justify-content: center;
      font-size: 56px; position: relative;
    }
    .project-img.p1 { background: linear-gradient(135deg, #1a237e, #283593); }
    .project-img.p2 { background: linear-gradient(135deg, #1b5e20, #2e7d32); }
    .project-img.p3 { background: linear-gradient(135deg, #e65100, #bf360c); }
    .project-img.p4 { background: linear-gradient(135deg, #006064, #00838f); }
    .project-tag {
      position: absolute; top: 12px; left: 12px;
      background: rgba(0,0,0,.5); color: var(--white); font-size: 11px;
      font-family: 'Montserrat',sans-serif; font-weight: 700; letter-spacing: 1px;
      padding: 4px 10px; border-radius: 50px; backdrop-filter: blur(4px);
    }
    .project-body { background: var(--white); padding: 18px; }
    .project-body h4 {
      font-family: 'Montserrat', sans-serif; font-weight: 800; font-size: 16px;
      color: var(--dark); margin-bottom: 6px;
    }
    .project-body p { color: #777; font-size: 13px; line-height: 1.5; }
    .projects-cta { text-align: center; margin-top: 40px; }

    /* ===== CONTACT ===== */
    #contacto { background: linear-gradient(135deg, var(--dark) 0%, #1e0e00 100%); position: relative; overflow: hidden; }
    #contacto::before {
      content: ''; position: absolute; top: -100px; right: -100px;
      width: 400px; height: 400px; border-radius: 50%;
      background: radial-gradient(circle, rgba(249,115,22,.12), transparent 70%);
    }
    .contact-inner { max-width: 900px; margin: 0 auto; position: relative; z-index: 2; }
    .contact-inner .section-title { color: var(--white); }
    .contact-inner .section-sub { color: rgba(255,255,255,.6); }
    .contact-inner .title-underline { margin: 12px auto 40px; }
    .contact-cards {
      display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px;
      margin-bottom: 40px;
    }
    .contact-card {
      background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1);
      border-radius: 18px; padding: 28px 20px; text-align: center;
      transition: background .3s, border-color .3s;
    }
    .contact-card:hover { background: rgba(249,115,22,.1); border-color: rgba(249,115,22,.3); }
    .contact-card i { font-size: 32px; color: var(--orange); margin-bottom: 12px; }
    .contact-card h4 {
      font-family: 'Montserrat', sans-serif; font-weight: 700;
      color: var(--white); font-size: 15px; margin-bottom: 6px;
    }
    .contact-card p { color: rgba(255,255,255,.6); font-size: 14px; }
    .contact-card a { color: var(--orange); text-decoration: none; font-weight: 600; }
    .contact-form {
      background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1);
      border-radius: 24px; padding: 36px;
    }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .form-group { display: flex; flex-direction: column; gap: 6px; }
    .form-group.full { grid-column: 1 / -1; }
    .form-group label {
      font-family: 'Montserrat', sans-serif; font-weight: 600; font-size: 12px;
      color: rgba(255,255,255,.7); text-transform: uppercase; letter-spacing: 1px;
    }
    .form-group input, .form-group textarea, .form-group select {
      background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.15);
      border-radius: 10px; padding: 12px 16px; color: var(--white);
      font-family: 'Open Sans', sans-serif; font-size: 14px; outline: none;
      transition: border-color .2s;
    }
    .form-group input::placeholder, .form-group textarea::placeholder { color: rgba(255,255,255,.35); }
    .form-group input:focus, .form-group textarea:focus, .form-group select:focus {
      border-color: var(--orange);
    }
    .form-group select option { background: var(--dark); }
    .form-group textarea { resize: vertical; min-height: 100px; }
    .btn-submit {
      width: 100%; background: var(--orange); color: var(--white); border: none;
      padding: 16px; border-radius: 50px; font-family: 'Montserrat', sans-serif;
      font-weight: 800; font-size: 15px; text-transform: uppercase; letter-spacing: 1px;
      cursor: pointer; box-shadow: var(--shadow-orange); margin-top: 20px;
      transition: transform .2s, box-shadow .2s; display: flex; align-items: center; justify-content: center; gap: 10px;
    }
    .btn-submit:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(249,115,22,.55); }

    /* ===== FOOTER ===== */
    footer {
      background: #111; padding: 40px 5% 20px;
    }
    .footer-inner {
      max-width: 1200px; margin: 0 auto;
      display: flex; justify-content: space-between; align-items: flex-start; gap: 40px; flex-wrap: wrap;
      padding-bottom: 28px; border-bottom: 1px solid rgba(255,255,255,.08);
    }
    .footer-brand .logo-wrap { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
    .footer-brand .logo-ico {
      width: 40px; height: 40px; background: var(--orange); border-radius: 8px;
      display: flex; align-items: center; justify-content: center; font-size: 18px;
    }
    .footer-brand .brand-name {
      font-family: 'Montserrat', sans-serif; font-weight: 900; font-size: 18px; color: var(--white);
    }
    .footer-brand .brand-sub { font-size: 10px; color: var(--orange); letter-spacing: 2px; font-weight: 700; }
    .footer-brand p { color: rgba(255,255,255,.5); font-size: 13px; max-width: 220px; line-height: 1.6; }
    .footer-links h5 {
      font-family: 'Montserrat', sans-serif; font-weight: 700; color: var(--white);
      font-size: 14px; margin-bottom: 14px; text-transform: uppercase; letter-spacing: 1px;
    }
    .footer-links ul { list-style: none; }
    .footer-links li { margin-bottom: 9px; }
    .footer-links a { color: rgba(255,255,255,.5); text-decoration: none; font-size: 13px; transition: color .2s; }
    .footer-links a:hover { color: var(--orange); }
    .footer-contact-info { display: flex; flex-direction: column; gap: 10px; }
    .fci-item { display: flex; align-items: center; gap: 10px; color: rgba(255,255,255,.5); font-size: 13px; }
    .fci-item i { color: var(--orange); width: 16px; }
    .footer-bottom {
      max-width: 1200px; margin: 16px auto 0;
      display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px;
    }
    .footer-bottom p { color: rgba(255,255,255,.3); font-size: 12px; }
    .footer-socials { display: flex; gap: 10px; }
    .social-btn {
      width: 34px; height: 34px; border-radius: 8px;
      background: rgba(255,255,255,.07); display: flex; align-items: center; justify-content: center;
      color: rgba(255,255,255,.5); font-size: 14px; text-decoration: none;
      transition: background .2s, color .2s;
    }
    .social-btn:hover { background: var(--orange); color: var(--white); }

    /* ===== WHATSAPP FLOAT ===== */
    .whatsapp-float {
      position: fixed; bottom: 28px; right: 28px; z-index: 9000;
      width: 58px; height: 58px; border-radius: 50%;
      background: #25D366; display: flex; align-items: center; justify-content: center;
      box-shadow: 0 6px 24px rgba(37,211,102,.4); cursor: pointer;
      animation: pulse-wa 2.5s infinite; text-decoration: none;
    }
    .whatsapp-float i { font-size: 28px; color: var(--white); }

    /* ===== BACK TO TOP ===== */
    .back-top {
      position: fixed; bottom: 96px; right: 28px; z-index: 9000;
      width: 44px; height: 44px; border-radius: 50%; background: var(--orange);
      display: flex; align-items: center; justify-content: center;
      color: var(--white); font-size: 18px; cursor: pointer; box-shadow: var(--shadow-orange);
      opacity: 0; transform: translateY(10px); transition: all .3s; border: none;
    }
    .back-top.visible { opacity: 1; transform: translateY(0); }
    .back-top:hover { background: var(--orange-dark); }

    /* ===== ANIMATIONS ===== */
    @keyframes fadeInUp {
      from { opacity: 0; transform: translateY(30px); }
      to { opacity: 1; transform: translateY(0); }
    }
    @keyframes fadeInRight {
      from { opacity: 0; transform: translateX(40px); }
      to { opacity: 1; transform: translateX(0); }
    }
    @keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
    @keyframes pulse-wa {
      0%, 100% { box-shadow: 0 6px 24px rgba(37,211,102,.4); }
      50% { box-shadow: 0 6px 36px rgba(37,211,102,.65); }
    }
    @keyframes marquee {
      0% { transform: translateX(0); }
      100% { transform: translateX(-50%); }
    }

    /* Scroll reveal */
    .reveal { opacity: 0; transform: translateY(40px); transition: opacity .6s ease, transform .6s ease; }
    .reveal.visible { opacity: 1; transform: translateY(0); }

    /* ===== RESPONSIVE ===== */
    @media (max-width: 900px) {
      .nav-links, .nav-phone, .nav-cta { display: none; }
      .hamburger { display: flex; }
      .hero-visual { display: none; }
      .hero-text { max-width: 100%; }
      .about-inner { flex-direction: column; gap: 30px; }
      .form-grid { grid-template-columns: 1fr; }
    }
    @media (max-width: 600px) {
      section { padding: 60px 4%; }
      .hero-btns { flex-direction: column; }
      .btn-primary, .btn-secondary { text-align: center; justify-content: center; }
      .stats-inner { gap: 14px; }
      .about-features { grid-template-columns: 1fr; }
      .contact-form { padding: 24px 18px; }
    }

    /* Notification toast */
    #toast {
      position: fixed; bottom: 100px; left: 50%; transform: translateX(-50%) translateY(20px);
      background: #222; color: #fff; padding: 12px 24px; border-radius: 50px;
      font-family: 'Montserrat',sans-serif; font-weight: 600; font-size: 14px;
      opacity: 0; transition: all .4s; z-index: 9999; pointer-events: none;
      border-left: 4px solid var(--orange);
    }
    #toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }