:root {
    --bg-dark: #eeeeee;
    --bg-card: #f9fafb;
    --gold-primary: #000000;
    --gold-hover: #333333;
    --text-light: #000000;
    --text-muted: #333333;
    --font-main: 'Inter', sans-serif;
    --font-headers: 'Inter', sans-serif;}

* {margin: 0; padding: 0; box-sizing: border-box;
    scroll-behavior: smooth; font-family: var(--font-main);}

h1, h2, h3, h4, .logo, header h1, header h2, .card h3, .contact-card h3 {
    font-family: var(--font-headers) !important;
    font-weight: 600; letter-spacing: 0.5px;}

body {background-color: var(--bg-dark); color: var(--text-light);
    overflow-x: hidden; line-height: 1.6; padding-top: 70px; position: relative;}

header {position: fixed; width: 100%; top: 0; z-index: 1000;
    background-color: rgba(255, 255, 255, 0.98);  backdrop-filter: blur(10px);
    border-bottom: 1px solid #e5e7eb;
    display: flex; flex-direction: column; align-items: center;
    padding: 1.2rem 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);}

.logo {font-size: 1.8rem; font-weight: bold;
    letter-spacing: 4px; text-transform: uppercase; 
    margin-bottom: 0.8rem; background: linear-gradient(120deg, 
        var(--gold-primary) 0%, 
        var(--gold-primary) 42%, #9ba53fa4 50%, 
        var(--gold-primary) 58%, 
        var(--gold-primary) 100%);
    background-size: 300% auto; -webkit-background-clip: text;
    background-clip: text;-webkit-text-fill-color: transparent;
    animation: shine-bounce 25s ease-in-out infinite;}
@keyframes shine-bounce {
    0% {background-position: 250% center;}
    35% {background-position: -150% center;}
    45% {background-position: -150% center;}
    80% {background-position: 250% center;}
    100% {background-position: 250% center;}}

nav {display: flex; justify-content: center; flex-wrap: nowrap;
    max-width: 800px; margin: 0 auto; gap: 0.5rem;}
nav a {display: inline-block; color: var(--text-light);
    text-decoration: none; font-size: 0.85rem; letter-spacing: 0.5px;
    text-transform: uppercase; position: relative; padding: 0.6rem 1.2rem;
    transition: all 0.3s ease; white-space: nowrap;
    border-radius: 25px; font-weight: 500;}
nav a:hover {background-color: #ecedf0;
    color: var(--gold-primary);
    transform: translateY(-1px);}
nav a.active {background-color: #000000; color: #ffffff;}

section { padding: 6rem 8%; }

#inicio, #sobre-mi, #servicios, #precios, #contacto, #demos { scroll-margin-top: 50px; }

.hero {position: relative; overflow: hidden; 
    min-height: 100vh; display: flex; flex-direction: column; 
    justify-content: center; align-items: center; 
    text-align: center; background-color: var(--bg-dark);
    padding: 4rem 2rem; margin-top: -70px;
    padding-top: calc(4rem + 70px);}
.hero::before {content: ""; position: absolute; top: 0;
    left: 0; width: 100%; height: 100%; z-index: 1; 
    background-image: linear-gradient(rgba(255, 255, 255, 0.664), rgba(249, 250, 251, 0.466)), url('fondo.jpg');
    background-repeat: no-repeat; background-position: center center;
    background-size: cover; background-attachment: fixed;
    animation: respiracionFondo 8s ease-in-out infinite alternate;
    pointer-events: none;}
.hero h1, .hero p, .hero .btn-gold {position: relative; z-index: 2;}
.hero h1 {opacity: 0; transform: translateY(30px);
    animation: fadeInUp 1s ease forwards; 
    animation-delay: 0.2s; margin-top: 2rem;
    font-size: 3rem; margin-bottom: 1.5rem;
    letter-spacing: 1px; text-transform: uppercase;
    font-weight: 700; color: var(--gold-primary);}
.hero p {opacity: 0; transform: translateY(30px);
    animation: fadeInUp 1s ease forwards; 
    animation-delay: 0.4s;font-size: 1.1rem; 
    color: var(--text-light);
    max-width: 500px; margin-bottom: 2.5rem; line-height: 1.7;}
.hero .btn-gold {opacity: 0; transform: translateY(30px);
    animation: fadeInUp 1s ease forwards;
    animation-delay: 0.6s;}

@keyframes respiracionFondo {0% {transform: scale(1);}
    100% {transform: scale(1.20);}}

@keyframes fadeInUp {to {opacity: 1; transform: translateY(0);}}

.btn-gold {position: relative; display: inline-block;
    padding: 1rem 2.5rem; color: #ffffff;
    background-color: var(--gold-primary);
    text-decoration: none; font-weight: 600;
    letter-spacing: 1px; text-transform: uppercase;
    font-size: 0.85rem; border-radius: 50px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid var(--gold-primary); cursor: pointer;
    overflow: hidden;}
.btn-gold::before {content: ''; position: absolute; top: 0;
    left: -100%; width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;}
.btn-gold:hover {transform: translateY(-3px);
    background-color: var(--gold-hover);
    border-color: var(--gold-hover);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);}
.btn-gold:hover::before {left: 100%;}

.about {display: flex; gap: 4rem; align-items: center;
    max-width: 1200px; margin: 0 auto; padding: 6rem 8%;}
.about-img {flex: 1; min-width: 300px; max-width: 380px;
    position: relative; border: 1px solid #e5e7eb;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border-radius: 12px; overflow: hidden; aspect-ratio: 3 / 4;}
.about-img img {width: 100%; height: 100%; object-fit: cover;
    display: block; transition: transform 0.5s ease;}
.about-img:hover img { transform: scale(1.02); }
.about-content { flex: 1.5; }
.about-content h2 {font-size: 2rem; color: var(--gold-primary);
    margin-bottom: 1.5rem; text-transform: uppercase; letter-spacing: 1px; font-weight: 700;}
.about-content p {color: var(--text-light);
    margin-bottom: 1.5rem; font-size: 1rem; line-height: 1.7;}

.services h2, .contact h2 { text-align: center;
    font-size: clamp(1.8rem, 5vw, 2.2rem);
    color: var(--gold-primary); margin-bottom: 1rem;
    text-transform: uppercase; letter-spacing: 1px; font-weight: 700;}
.services-grid {display: grid;
    grid-template-columns: repeat(auto-fit, minmax(195px, 1fr));
    gap: 2.5rem; margin-top: 3rem; }

.contact h2 { margin-bottom: 0.5rem; }
.contact-subtitle {text-align: center; color: var(--text-muted);
    margin-bottom: 3rem; font-size: 1rem;}

.card {position: relative; overflow: hidden;
    background-color: var(--bg-card);
    border: 1px solid #e5e7eb;
    border-radius: 12px; padding: 2rem 1.5rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1; aspect-ratio: 1 / 1; display: flex;
    flex-direction: column; justify-content: flex-start;}
.card::before {content: ''; position: absolute; top: 0;
    left: 0; right: 0; height: 4px;
    background: linear-gradient(90deg, #000000, #333333);
    transform: scaleX(0); transform-origin: left;
    transition: transform 0.3s ease;}
.card:hover {transform: translateY(-8px); border-color: #000000;
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);}
.card:hover::before {transform: scaleX(1);}
.card h3 {color: var(--gold-primary); margin-bottom: 1rem;
    font-size: 1rem; letter-spacing: 0.5px; font-weight: 600;
    transition: color 0.3s ease; text-align: center, top;}
.card:hover h3 {color: #000000;}
.card p { color: var(--text-light); font-size: 0.95rem; line-height: 1.6; }

.demos {background:#f9fafb; background: transparent}
.demos h2 {text-align:center; font-size: clamp(1.8rem, 5vw, 2.2rem);
    color: var(--gold-primary); margin-bottom: 1rem;
    text-transform: uppercase; letter-spacing: 1px; font-weight: 700;}
.demo-grid {display:grid; grid-template-columns:
repeat(auto-fit,minmax(300px,1fr)); gap:30px; margin-top:50px;}
.demo-card {background:rgb(255, 255, 255);
border:1px solid #e5e7eb; border-radius:12px;
overflow:hidden; box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
transition:all 0.3s cubic-bezier(0.4, 0, 0.2, 1); position: relative;}

.demo-card::before {content: ''; position: absolute; top: 0;
    left: 0; right: 0; bottom: 0;
    background: linear-gradient(135deg, rgba(0,0,0,0.02) 0%, transparent 100%);
    opacity: 0; transition: opacity 0.3s ease;
    pointer-events: none;}
.demo-card:hover {transform:translateY(-8px) scale(1.02);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    border-color: #000000;}
.demo-card:hover::before {opacity: 1;}
.demo-card img {width:100%; height:220px; object-fit:cover;
    transition: transform 0.3s ease;}
.demo-card:hover img {transform: scale(1.05);}
.demo-card div {padding:25px;}
.demo-card h3 {font-size:1.25rem; color:var(--gold-primary); font-weight: 600;
    transition: color 0.3s ease;}
.demo-card:hover h3 {color: #000000;}
.demo-card p {color: var(--text-light);
    font-size: 0.95rem; line-height: 1.6;}

    .demo-card a {display:inline-block; margin-top:15px;
color:white; background:var(--gold-primary); padding:10px 20px;
border-radius:25px; text-decoration:none; transition: all 0.3s ease; font-size: 0.85rem;
    border: 2px solid var(--gold-primary);}
.demo-card a:hover {background:transparent;
    
    color:var(--gold-primary); transform: translateY(-2px);}
.demo-card h3 {color: var(--gold-primary); margin-bottom: 1rem;
    font-size: 1.25rem; letter-spacing: 0.5px;
    font-weight: 600; transition: color 0.3s ease;}
.demo-card:hover h3 {color: #000000;}

.contact-grid {display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2rem;}
.contact-card {position: relative; background-color: var(--bg-card);
    padding: 2rem 1.5rem; text-align: center; border-radius: 12px;
    border: 1px solid #e5e7eb;
    text-decoration: none; color: var(--text-light);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05); overflow: hidden;
    z-index: 1;}

.contact-card::before {content: ''; position: absolute; top: 0;
    left: 0; right: 0; bottom: 0; opacity: 0; transition: opacity 0.3s ease;
    z-index: 0;}
.whatsapp-card::before {background: linear-gradient(135deg, rgba(37, 211, 102, 0.1) 0%, transparent 100%);}
.instagram-card::before {background: linear-gradient(135deg, rgba(225, 48, 108, 0.1) 0%, transparent 100%);}
.email-card::before {background: linear-gradient(135deg, rgba(0, 0, 0, 0.05) 0%, transparent 100%);}
.contact-card:hover {transform: translateY(-8px); border-color: #000000;
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);}
.contact-card:hover::before {opacity: 1;}
.contact-icon {margin-bottom: 1rem; display: flex; justify-content: center;
    position: relative; z-index: 1;}
.contact-icon svg {fill: var(--text-muted); transition: all 0.3s ease;}
.whatsapp-card:hover .contact-icon svg { fill: #25d366; transform: scale(1.2); }
.instagram-card:hover .contact-icon svg { fill: #e1306c; transform: scale(1.2); }
.email-card:hover .contact-icon svg { fill: #000000; transform: scale(1.2); }
.contact-card h3 {color: var(--gold-primary); margin-bottom: 0.5rem; font-size: 1.1rem; font-weight: 600;
    position: relative; z-index: 1; transition: color 0.3s ease;}
.contact-card:hover h3 {color: #000000;}
.contact-card p {color: var(--text-light); font-size: 0.9rem; position: relative; z-index: 1;}

footer {background-color: #112427;
    border-top: 1px solid #374151;
    padding: 4rem 8% 2rem 8%;}
.footer-grid {display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem; margin-bottom: 3rem;}
.footer-col h4 {color: #ffffff; text-transform: uppercase;
    letter-spacing: 1px; margin-bottom: 1.5rem; font-weight: 600;}
.footer-col p, .footer-col ul {color: #9ca3af;
    font-size: 0.9rem; list-style: none;}
.footer-col ul li { margin-bottom: 0.8rem; }
.footer-col ul li a {color: #9ca3af; 
    text-decoration: none;display: inline-block;
    background-image: linear-gradient(#ffffff, #ffffff);
    background-position: 0% 100%;
    background-repeat: no-repeat; background-size: 0% 2px;
    transition: background-size 0.3s ease, color 0.3s ease;}
.footer-col ul li a:hover {color: #ffffff; 
    background-size: 100% 2px;}
.footer-bottom {text-align: center;
    border-top: 1px solid #374151;
    padding-top: 2rem; color: #9ca3af; font-size: 0.85rem;}

.whatsapp-float {position: fixed; bottom: 40px; right: 40px;
    background-color: #25d366; width: 60px; height: 60px;
    border-radius: 50%; z-index: 9999; display: flex;
    align-items: center; justify-content: center;
    transition: transform 0.2s, background-color 0.2s, box-shadow 0.2s;
    animation: latidoSutil 3.5s infinite ease-in-out;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);}
.whatsapp-float:hover {transform: scale(1.1) translateY(-5px);
    background-color: #1aa85a;
    box-shadow: 0 25px 60px rgba(37, 211, 102, 1);}
.whatsapp-float svg { width: 32px; height: 32px; fill: #fff; }

@keyframes latidoSutil {0%, 100% {transform: scale(1);
        box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3), 0 0 0 0 rgba(37, 211, 102, 0);}
    50% {transform: scale(1.05);
        box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4), 0 0 0 10px rgba(37, 211, 102, 0.15);}}
@keyframes pulseHover {0%, 70%, 100% {transform: scale(1);}
    85% {transform: scale(1.4);}}

.reveal {opacity: 0;transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.165, 0.84, 0.44, 1), transform 0.8s cubic-bezier(0.165, 0.84, 0.44, 1);}
.reveal.active { opacity: 1; transform: translateY(0); }

.info-item {display: flex; align-items: flex-start;
    margin-bottom: 1.5rem; gap: 1rem;}
.info-icon {font-size: 1.5rem; min-width: 40px; height: 40px;
    display: flex; align-items: center; justify-content: center;
    background-color: rgba(65, 55, 212, 0.1);
    border-radius: 50%;
    border: 1px solid rgba(102, 55, 212, 0.3);}
.info-item p {color: var(--text-muted);
    font-size: 1rem; line-height: 1.6;}

a[href^="tel"] {color: inherit; text-decoration: none;}

@media (max-width: 768px) {
header {padding: 0.8rem 15px;}
.logo {font-size: 1.4rem; margin-bottom: 0.5rem; letter-spacing: 2px;}
    nav {flex-wrap: wrap; justify-content: center;
        border-top: 1px solid rgba(71, 55, 212, 0.25);
        padding-top: 0.5rem; margin-top: 0.5rem; gap: 0.05rem}
    nav a {margin: 0.5rem 0.5rem; font-size: 0.7rem;}

    #inicio, #sobre-mi, #servicios, #contacto, #demos {
    scroll-margin-top: 80px;}
    
.hero {margin-top: -60px; padding-top: calc(4rem + 60px);
background-attachment: scroll !important}
.card {aspect-ratio: auto; padding: 1.5rem 1.2rem;}
.services-grid {gap: 1.5rem; 
grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));}    
    
body { padding-top: 170px; }
.hero h1 { font-size: 2.3rem; }
.whatsapp-float { bottom: 20px; right: 20px; width: 55px; height: 55px; }
.whatsapp-float svg { width: 26px; height: 26px; }
.card h3, .demo-card h3 { font-size: 1.5rem; }
.card p, .demo-card p { font-size: 1.1rem; color: #000000; }
.about-content h2 { font-size: 2.1rem; }
.about-content p { font-size: 1.15rem; color: #000000; line-height: 1.7; }
.about { flex-direction: column; gap: 2.5rem; }
.about-img { max-width: 320px; margin: 0 auto; aspect-ratio: 1.1 / 1; }
.card:active, 
.contact-card:active {transform: scale(0.98);border-color: rgba(212, 175, 55, 0.6);transition: transform 0.1s ease;}

.contact-card {padding: 1.5rem 1.2rem;}
.contact-card h3 {font-size: 1.1rem; margin-bottom: 0.4rem;}
.contact-card p {font-size: 0.85rem;}
.contact-icon {margin-bottom: 0.8rem;}
.contact-icon svg {width: 32px; height: 32px;}
.info-item {margin-bottom: 1.2rem;}
.info-item p {font-size: 0.95rem;}}    

@media (max-width: 480px) {
    .logo {font-size: 1.2rem; letter-spacing: 1px;}
    nav a {margin: 0 0.5rem; font-size: 0.65rem;}
     #inicio, #sobre-mi, #servicios, #precios, #contacto, #demos {
    scroll-margin-top: 100px;}
    body {padding-top: 80px;}
    .hero {margin-top: -80px;
    padding-top: calc(4rem + 80px);}}

.pricing {background-color: var(--bg-dark); padding: 6rem 8%;}
.pricing h2 {text-align: center; font-size: clamp(1.8rem, 5vw, 2.2rem);
    color: var(--gold-primary); margin-bottom: 1rem;
    text-transform: uppercase; letter-spacing: 1px; font-weight: 700;}
.pricing .contact-subtitle {text-align: center; color: var(--text-muted);
    margin-bottom: 3rem; font-size: 1rem;}

.pricing-container {max-width: 900px; margin: 0 auto;}
.pricing-card {background-color: var(--bg-card);
    border: 1px solid #e5e7eb; border-radius: 16px;
    overflow: hidden; box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex; flex-direction: column;}
.pricing-card:hover {transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    border-color: #000000;}

.pricing-image {width: 100%; height: 180px; overflow: hidden;}
.pricing-image img {width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.5s ease;}
.pricing-card:hover .pricing-image img {transform: scale(1.05);}

.pricing-content {padding: 2rem; text-align: left;}

.pricing-header {display: flex; justify-content: space-between; align-items: flex-start; gap: 2rem; margin-bottom: 1.5rem;}

.pricing-info {flex: 1;}
.pricing-info h3 {font-size: 1.3rem; color: var(--gold-primary);
    margin-bottom: 1rem; font-weight: 600; letter-spacing: 0.5px;}

.pricing-price {display: flex; align-items: baseline;
    gap: 0.5rem; margin-bottom: 0.5rem;}
.price-amount {font-size: 2.5rem; font-weight: 700; color: var(--gold-primary);
    line-height: 1;}
.price-period {font-size: 1.1rem; color: var(--text-muted);
    font-weight: 500;}

.pricing-currency {color: var(--text-muted); font-size: 0.9rem;}

.pricing-action {display: flex; flex-direction: column; align-items: flex-end; gap: 0.5rem;}

.btn-buy {padding: 0.8rem 2rem; background-color: #22c55e;
    color: #ffffff; border: none; border-radius: 50px; font-size: 0.9rem;
    font-weight: 600; letter-spacing: 0.5px; cursor: pointer;
    transition: all 0.3s ease; text-transform: uppercase; width: 100%; margin-bottom: 1rem;}
.btn-buy:hover {background-color: #16a34a;
    transform: translateY(-2px); box-shadow: 0 4px 12px rgba(34, 197, 94, 0.3);}

.payment-method {color: var(--text-muted); font-size: 0.75rem; text-align: right;
    margin: 0; font-weight: 500;}

.btn-terms {width: 100%; padding: 1rem 2rem;
    background-color: var(--gold-primary); color: #ffffff;
    border: none; border-radius: 50px; font-size: 0.9rem;
    font-weight: 600; letter-spacing: 0.5px;
    cursor: pointer; transition: all 0.3s ease;
    display: flex; align-items: center; justify-content: center;
    gap: 0.5rem; text-transform: uppercase;}
.btn-terms:hover {background-color: var(--gold-hover);
    transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);}
.btn-arrow {transition: transform 0.3s ease; font-size: 0.8rem;}
.btn-terms.active .btn-arrow {transform: rotate(180deg);}

.terms-content {max-height: 0; overflow: hidden;
    transition: max-height 0.5s ease, padding 0.3s ease;
    background-color: #f9fafb; border-radius: 12px;}
.terms-content.open {max-height: 500px; padding: 1.5rem;
    margin-top: 1.5rem; border: 1px solid #e5e7eb;}

.terms-columns {display: grid; grid-template-columns: 1fr 1fr; gap: 2rem;}

.terms-list {list-style: none; text-align: left; padding: 0; margin: 0;}
.terms-list li {padding: 0.75rem 0; color: var(--text-light);
    font-size: 0.9rem; line-height: 1.5;
    border-bottom: 1px solid #e5e7eb;
    transition: color 0.3s ease;}
.terms-list li:last-child {border-bottom: none;}
.terms-list li:hover {color: var(--gold-primary);}

@media (max-width: 768px) {
    .pricing-content {padding: 2rem 1.5rem;}
    .price-amount {font-size: 2.5rem;}
    .pricing-image {height: 150px;}
    
    .pricing-header {flex-direction: column; gap: 1.5rem;}
    .pricing-action {align-items: flex-start; width: 100%;}

    .payment-method {text-align: left;}
    
    .terms-columns {grid-template-columns: 1fr; gap: 0;}}