:root {
            --rojo: #b50d0d;
            --rojo-claro: #d41414;
            --amarillo: #FCD116;
            --negro: #0D0D0D;
            --gris-oscuro: #1A1A2E;
            --gris: #6B7280;
            --fondo: #F8F6F1;
            --blanco: #FFFFFF;
            --crema: #FFFBF0;
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body { font-family: 'DM Sans', sans-serif; background: var(--fondo); color: var(--negro); overflow-x: hidden; }

        /* NAVBAR */
        nav {
            position: fixed; top: 0; left: 0; right: 0; z-index: 100;
            padding: 18px 60px;
            display: flex; justify-content: space-between; align-items: center;
            background: rgba(248,246,241,0.92); backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(181,13,13,0.1); transition: all 0.3s;
        }
        .logo { font-family: 'Playfair Display', serif; font-size: 1.6rem; font-weight: 900; color: var(--rojo); letter-spacing: -1px; text-decoration: none; }
        .logo span { color: var(--negro); background: var(--amarillo); padding: 0 6px; border-radius: 3px; }
        nav ul { list-style: none; display: flex; gap: 36px; align-items: center; }
        nav ul li a { text-decoration: none; color: var(--negro); font-weight: 500; font-size: 0.95rem; transition: color 0.2s; }
        nav ul li a:hover { color: var(--rojo); }

        /* Botones nav según estado auth */
        .btn-nav {
            background: var(--rojo); color: var(--blanco) !important;
            padding: 10px 24px; border-radius: 6px; font-weight: 600 !important; transition: all 0.2s !important;
        }
        .btn-nav:hover { background: var(--rojo-claro) !important; transform: translateY(-1px); }
        .nav-user { display: none; align-items: center; gap: 12px; }
        .nav-user img { width: 34px; height: 34px; border-radius: 50%; border: 2px solid var(--rojo); }
        .nav-user span { font-weight: 600; font-size: 0.9rem; max-width: 120px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
        .btn-nav-outline {
            background: transparent; color: var(--rojo) !important; border: 2px solid var(--rojo);
            padding: 8px 20px; border-radius: 6px; font-weight: 600 !important; cursor: pointer;
            transition: all 0.2s; font-size: 0.9rem;
        }
        .btn-nav-outline:hover { background: var(--rojo); color: var(--blanco) !important; }

        /* HERO */
        .hero {
            min-height: 100vh; display: grid; grid-template-columns: 1fr 1fr;
            align-items: center; padding: 120px 60px 60px; gap: 60px; position: relative; overflow: hidden;
        }
        .hero::before { content:''; position:absolute; top:-200px; right:-200px; width:700px; height:700px; background:radial-gradient(circle,rgba(181,13,13,.12) 0%,transparent 70%); pointer-events:none; }
        .hero-badge { display:inline-flex; align-items:center; gap:8px; background:var(--rojo); color:var(--blanco); padding:6px 16px; border-radius:100px; font-size:.8rem; font-weight:600; letter-spacing:.5px; margin-bottom:28px; animation:fadeInDown .8s ease; }
        .hero-badge::before { content:''; width:6px; height:6px; background:var(--amarillo); border-radius:50%; animation:pulse 1.5s infinite; }
        @keyframes pulse { 0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(1.3)} }
        .hero h1 { font-family:'Playfair Display',serif; font-size:clamp(2.8rem,5vw,4.2rem); font-weight:900; line-height:1.05; margin-bottom:24px; animation:fadeInUp .8s ease .1s both; }
        .hero h1 em { font-style:normal; color:var(--rojo); position:relative; }
        .hero h1 em::after { content:''; position:absolute; bottom:4px; left:0; right:0; height:4px; background:var(--amarillo); border-radius:2px; }
        .hero-desc { font-size:1.1rem; color:var(--gris); line-height:1.7; max-width:480px; margin-bottom:40px; animation:fadeInUp .8s ease .2s both; }
        .hero-ctas { display:flex; gap:16px; flex-wrap:wrap; animation:fadeInUp .8s ease .3s both; }
        .btn-primary { background:var(--rojo); color:var(--blanco); padding:16px 36px; border-radius:8px; font-size:1rem; font-weight:600; text-decoration:none; transition:all .3s; border:none; cursor:pointer; display:inline-flex; align-items:center; gap:8px; }
        .btn-primary:hover { background:var(--rojo-claro); transform:translateY(-2px); box-shadow:0 8px 25px rgba(181,13,13,.3); }
        .btn-secondary { background:transparent; color:var(--rojo); padding:16px 36px; border-radius:8px; font-size:1rem; font-weight:600; text-decoration:none; transition:all .3s; border:2px solid var(--rojo); cursor:pointer; display:inline-flex; align-items:center; gap:8px; }
        .btn-secondary:hover { background:var(--rojo); color:var(--blanco); }
        .hero-stats { display:flex; gap:40px; margin-top:48px; padding-top:32px; border-top:1px solid rgba(0,0,0,.08); animation:fadeInUp .8s ease .4s both; }
        .stat-num { font-family:'Playfair Display',serif; font-size:2rem; font-weight:900; color:var(--rojo); display:block; }
        .stat-label { font-size:.8rem; color:var(--gris); font-weight:500; }

        /* Hero visual */
        .hero-visual { animation:fadeInRight .8s ease .2s both; }
        .hero-card-main { background:var(--rojo); color:var(--blanco); border-radius:20px; padding:40px; position:relative; overflow:hidden; }
        .hero-card-main::before { content:''; position:absolute; top:-60px; right:-60px; width:200px; height:200px; background:rgba(255,255,255,.05); border-radius:50%; }
        .card-icon { font-size:3rem; margin-bottom:16px; }
        .hero-card-main h3 { font-family:'Playfair Display',serif; font-size:1.6rem; margin-bottom:12px; }
        .hero-card-main p { opacity:.85; font-size:.95rem; line-height:1.6; margin-bottom:24px; }
        .card-score { display:flex; align-items:center; gap:16px; background:rgba(255,255,255,.1); border-radius:12px; padding:16px 20px; }
        .score-big { font-family:'Playfair Display',serif; font-size:2.5rem; font-weight:900; color:var(--amarillo); }
        .floating-cards { position:absolute; right:-20px; bottom:-20px; display:flex; flex-direction:column; gap:10px; }
        .mini-card { background:var(--blanco); border-radius:12px; padding:12px 16px; box-shadow:0 4px 20px rgba(0,0,0,.1); display:flex; align-items:center; gap:10px; font-size:.85rem; font-weight:600; animation:float 3s ease-in-out infinite; }
        .mini-card:nth-child(2) { animation-delay:1s; }
        @keyframes float { 0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)} }
        .mini-card-dot { width:10px; height:10px; border-radius:50%; }

        /* ABOUT */
        .about { padding:100px 60px; background:var(--negro); color:var(--blanco); position:relative; overflow:hidden; }
        .about::before { content:'DALTON'; position:absolute; top:50%; left:50%; transform:translate(-50%,-50%); font-family:'Playfair Display',serif; font-size:20vw; font-weight:900; color:rgba(255,255,255,.02); white-space:nowrap; pointer-events:none; }
        .about-inner { max-width:1200px; margin:0 auto; display:grid; grid-template-columns:1fr 1fr; gap:80px; align-items:center; position:relative; z-index:1; }
        .section-tag { display:inline-block; background:var(--amarillo); color:var(--negro); padding:4px 14px; border-radius:4px; font-size:.75rem; font-weight:700; letter-spacing:1.5px; text-transform:uppercase; margin-bottom:20px; }
        .about h2 { font-family:'Playfair Display',serif; font-size:clamp(2rem,3.5vw,3rem); font-weight:900; line-height:1.1; margin-bottom:24px; }
        .about p { color:rgba(255,255,255,.7); font-size:1.05rem; line-height:1.8; margin-bottom:16px; }
        .about-features { display:flex; flex-direction:column; gap:20px; }
        .feature-item { display:flex; gap:16px; align-items:flex-start; padding:20px; background:rgba(255,255,255,.04); border-radius:12px; border:1px solid rgba(255,255,255,.06); transition:all .3s; }
        .feature-item:hover { background:rgba(181,13,13,.1); border-color:rgba(181,13,13,.3); }
        .feature-icon { font-size:1.5rem; flex-shrink:0; width:44px; height:44px; background:rgba(181,13,13,.15); border-radius:10px; display:flex; align-items:center; justify-content:center; }
        .feature-text h4 { font-size:.95rem; font-weight:600; margin-bottom:4px; }
        .feature-text p { font-size:.85rem; color:rgba(255,255,255,.5); margin:0; }

        /* SERVICIOS */
        .services { padding:100px 60px; background:var(--crema); }
        .services-inner { max-width:1200px; margin:0 auto; }
        .section-header { text-align:center; margin-bottom:64px; }
        .section-header h2 { font-family:'Playfair Display',serif; font-size:clamp(2rem,3.5vw,2.8rem); font-weight:900; margin-bottom:16px; }
        .section-header p { font-size:1.05rem; color:var(--gris); max-width:560px; margin:0 auto; line-height:1.7; }
        .services-grid { display:grid; grid-template-columns:1fr 1fr; gap:32px; }
        .service-card { background:var(--blanco); border-radius:20px; overflow:hidden; border:1px solid rgba(0,0,0,.06); transition:all .4s; position:relative; }
        .service-card:hover { transform:translateY(-6px); box-shadow:0 20px 60px rgba(0,0,0,.12); }
        .service-card-top { padding:40px 40px 32px; position:relative; }
        .service-card:first-child .service-card-top { background:linear-gradient(135deg,var(--rojo) 0%,#7a0909 100%); color:var(--blanco); }
        .service-card:last-child .service-card-top { background:linear-gradient(135deg,var(--gris-oscuro) 0%,#0f0f23 100%); color:var(--blanco); }
        .service-number { font-family:'Playfair Display',serif; font-size:5rem; font-weight:900; opacity:.12; position:absolute; top:10px; right:24px; line-height:1; }
        .service-icon-big { font-size:2.5rem; margin-bottom:20px; }
        .service-card-top h3 { font-family:'Playfair Display',serif; font-size:1.7rem; font-weight:700; margin-bottom:12px; }
        .service-card-top p { opacity:.85; font-size:.95rem; line-height:1.6; }
        .service-card-bottom { padding:32px 40px; }
        .service-features { list-style:none; display:flex; flex-direction:column; gap:12px; margin-bottom:28px; }
        .service-features li { display:flex; align-items:center; gap:10px; font-size:.9rem; color:var(--gris); }
        .service-features li::before { content:'✓'; width:20px; height:20px; background:var(--rojo); color:white; border-radius:50%; display:flex; align-items:center; justify-content:center; font-size:.7rem; font-weight:700; flex-shrink:0; }
        .btn-service { width:100%; background:var(--rojo); color:var(--blanco); padding:14px; border-radius:8px; font-size:.95rem; font-weight:600; border:none; cursor:pointer; transition:all .3s; text-align:center; text-decoration:none; display:block; }
        .btn-service:hover { background:var(--rojo-claro); transform:translateY(-2px); }

        /* PASOS */
        .how { padding:100px 60px; background:var(--blanco); }
        .how-inner { max-width:1200px; margin:0 auto; }
        .steps-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:32px; margin-top:64px; position:relative; }
        .steps-grid::before { content:''; position:absolute; top:30px; left:12%; right:12%; height:2px; background:linear-gradient(to right,var(--rojo),var(--rojo-claro)); z-index:0; }
        .step { text-align:center; position:relative; z-index:1; }
        .step-num { width:60px; height:60px; background:var(--rojo); color:var(--blanco); border-radius:50%; display:flex; align-items:center; justify-content:center; font-family:'Playfair Display',serif; font-size:1.4rem; font-weight:900; margin:0 auto 20px; border:4px solid var(--crema); transition:transform .3s; }
        .step:hover .step-num { transform:scale(1.1); }
        .step h4 { font-weight:700; margin-bottom:8px; font-size:.95rem; }
        .step p { font-size:.85rem; color:var(--gris); line-height:1.6; }

        /* MODAL */
        .modal-overlay { display:none; position:fixed; inset:0; background:rgba(0,0,0,.7); z-index:200; backdrop-filter:blur(6px); align-items:center; justify-content:center; }
        .modal-overlay.active { display:flex; }
        .modal-box { background:var(--blanco); border-radius:24px; padding:48px; width:100%; max-width:440px; position:relative; animation:modalIn .3s ease; }
        @keyframes modalIn { from{opacity:0;transform:translateY(20px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)} }
        .modal-close { position:absolute; top:16px; right:20px; background:none; border:none; font-size:1.5rem; cursor:pointer; color:var(--gris); }
        .modal-close:hover { color:var(--negro); }
        .modal-logo { font-family:'Playfair Display',serif; font-size:1.8rem; font-weight:900; color:var(--rojo); margin-bottom:8px; }
        .modal-subtitle { color:var(--gris); font-size:.9rem; margin-bottom:32px; }

        /* Tabs del modal */
        .modal-tabs { display:flex; gap:0; margin-bottom:28px; border:2px solid rgba(0,0,0,.08); border-radius:8px; overflow:hidden; }
        .modal-tab { flex:1; padding:10px; background:none; border:none; font-family:'DM Sans',sans-serif; font-size:.9rem; font-weight:600; cursor:pointer; transition:all .2s; color:var(--gris); }
        .modal-tab.active { background:var(--rojo); color:var(--blanco); }

        .btn-google { width:100%; background:var(--blanco); color:var(--negro); border:2px solid rgba(0,0,0,.1); padding:14px; border-radius:10px; font-size:.95rem; font-weight:600; cursor:pointer; display:flex; align-items:center; justify-content:center; gap:12px; transition:all .3s; margin-bottom:20px; font-family:'DM Sans',sans-serif; }
        .btn-google:hover { border-color:var(--rojo); background:var(--crema); }
        .divider { display:flex; align-items:center; gap:12px; margin:20px 0; }
        .divider::before,.divider::after { content:''; flex:1; height:1px; background:rgba(0,0,0,.1); }
        .divider span { font-size:.8rem; color:var(--gris); }
        .form-group { margin-bottom:16px; }
        .form-group label { display:block; font-size:.85rem; font-weight:600; margin-bottom:6px; }
        .form-group input { width:100%; padding:12px 16px; border:2px solid rgba(0,0,0,.1); border-radius:8px; font-size:.95rem; font-family:'DM Sans',sans-serif; transition:border-color .2s; outline:none; }
        .form-group input:focus { border-color:var(--rojo); }
        .btn-login { width:100%; background:var(--rojo); color:var(--blanco); padding:14px; border-radius:10px; font-size:1rem; font-weight:600; border:none; cursor:pointer; transition:all .3s; margin-top:8px; font-family:'DM Sans',sans-serif; }
        .btn-login:hover { background:var(--rojo-claro); }
        .login-footer { text-align:center; margin-top:20px; font-size:.85rem; color:var(--gris); }
        .login-footer a { color:var(--rojo); text-decoration:none; font-weight:600; cursor:pointer; }
        .error-msg { background:#fff0f0; border:1px solid #ffcccc; color:#cc0000; padding:10px 14px; border-radius:8px; font-size:.85rem; margin-bottom:12px; display:none; }
        .success-msg { background:#f0fff4; border:1px solid #a3e6b7; color:#006837; padding:10px 14px; border-radius:8px; font-size:.85rem; margin-bottom:12px; display:none; }

        /* FOOTER */
        footer { background:var(--negro); color:var(--blanco); padding:60px 60px 32px; }
        .footer-inner { max-width:1200px; margin:0 auto; }
        .footer-top { display:grid; grid-template-columns:2fr 1fr 1fr; gap:60px; margin-bottom:48px; }
        .footer-brand .logo { font-size:1.8rem; display:block; margin-bottom:16px; color:var(--blanco); }
        .footer-brand p { color:rgba(255,255,255,.5); font-size:.9rem; line-height:1.7; max-width:300px; }
        .footer-col h4 { font-size:.85rem; font-weight:700; letter-spacing:1px; text-transform:uppercase; color:rgba(255,255,255,.5); margin-bottom:20px; }
        .footer-col ul { list-style:none; display:flex; flex-direction:column; gap:10px; }
        .footer-col ul li a { text-decoration:none; color:rgba(255,255,255,.7); font-size:.9rem; transition:color .2s; }
        .footer-col ul li a:hover { color:var(--amarillo); }
        .footer-bottom { border-top:1px solid rgba(255,255,255,.08); padding-top:24px; display:flex; justify-content:space-between; align-items:center; font-size:.8rem; color:rgba(255,255,255,.35); }

        /* ANIMACIONES */
        @keyframes fadeInUp { from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)} }
        @keyframes fadeInDown { from{opacity:0;transform:translateY(-16px)}to{opacity:1;transform:translateY(0)} }
        @keyframes fadeInRight { from{opacity:0;transform:translateX(32px)}to{opacity:1;transform:translateX(0)} }

        /* ── Hamburger base (hidden on desktop) ── */
        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            min-width: 44px;
            min-height: 44px;
            align-items: center;
            justify-content: center;
        }
        .nav-hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--negro);
            border-radius: 2px;
            transition: all 0.3s;
        }
        .nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
        .nav-hamburger.open span:nth-child(2) { opacity: 0; }
        .nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

        /* ===== RESPONSIVE ===== */

        /* Tablet (768px – 1023px) */
        @media (max-width: 1023px) {
            nav { padding: 16px 32px; }
            .hero { grid-template-columns: 1fr; padding: 100px 32px 60px; gap: 40px; }
            .about { padding: 80px 32px; }
            .services { padding: 80px 32px; }
            .how { padding: 80px 32px; }
            footer { padding: 60px 32px 32px; }
        }

        /* Mobile (<768px) */
        @media (max-width: 767px) {
            nav { padding: 14px 20px; }

            /* Hamburger shown on mobile */
            .nav-hamburger { display: flex; }

            /* Nav menu hidden by default on mobile */
            nav ul.nav-menu {
                display: none;
                position: fixed;
                top: 60px; left: 0; right: 0;
                background: rgba(248,246,241,0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 16px 24px 24px;
                border-bottom: 1px solid rgba(181,13,13,0.15);
                z-index: 99;
                gap: 4px;
            }
            nav ul.nav-menu.open { display: flex; }
            nav ul.nav-menu li { display: flex !important; }
            nav ul.nav-menu li a, nav ul.nav-menu li button {
                padding: 12px 8px;
                font-size: 1rem;
                min-height: 44px;
            }

            .hero { grid-template-columns: 1fr; padding: 80px 24px 48px; gap: 32px; }
            .hero-visual { display: none; }

            .about { padding: 60px 24px; }
            .about-inner { grid-template-columns: 1fr; gap: 32px; }

            .services { padding: 60px 24px; }
            .services-grid { grid-template-columns: 1fr; gap: 24px; }

            .how { padding: 60px 24px; }
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid::before { display: none; }

            footer { padding: 60px 24px 32px; }
            .footer-top { grid-template-columns: 1fr; gap: 32px; }

            /* Auth modal mobile */
            .modal-overlay { align-items: flex-start; padding-top: 16px; }
            .modal-box {
                width: calc(100% - 32px);
                max-width: 100%;
                margin: 16px;
                max-height: calc(100dvh - 32px);
                overflow-y: auto;
                padding: 32px 24px;
            }
        }

        @media (max-width: 480px) {
            .steps-grid { grid-template-columns: 1fr; }
        }