:root {
    --bg-dark: #070B14;
    --bg-card: #111A2C;
    --accent-blue: #00E5FF;
    --accent-green: #00FF9D;
    --text-primary: #F0F4F8;
    --text-secondary: #A0ABC0;
    --font-main: 'Inter', sans-serif;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Header & Nav */
header {
    background-color: rgba(7, 11, 20, 0.85);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--accent-blue);
}

.cta-btn {
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-green));
    color: var(--bg-dark) !important;
    padding: 0.7rem 1.5rem;
    border-radius: 5px;
    font-weight: 700 !important;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: transform 0.3s, box-shadow 0.3s;
    text-decoration: none;
    display: inline-block;
}

.cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 229, 255, 0.3);
}

/* Base Section */
section {
    padding: 6rem 5%;
    max-width: 1400px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(90deg, #fff, var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto 4rem auto;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding-top: 100px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(0, 229, 255, 0.05) 0%, transparent 50%);
    z-index: -1;
}

.hero h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    max-width: 1000px;
}

.hero h1 span {
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.3rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin-bottom: 3rem;
}

.hero-ctas {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--accent-blue);
    padding: 0.8rem 1.5rem;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-block;
}

.btn-secondary:hover {
    background: rgba(0, 229, 255, 0.1);
}

/* Soluciones Grid */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.solution-card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: transform 0.3s, border-color 0.3s;
}

.solution-card:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 229, 255, 0.3);
}

.solution-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--accent-green);
    display: inline-block;
}

.solution-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--accent-blue);
}

.solution-card ul {
    list-style: none;
    color: var(--text-secondary);
}

.solution-card ul li {
    margin-bottom: 0.8rem;
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
}

.solution-card ul li::before {
    content: '→';
    color: var(--accent-green);
    font-weight: bold;
}

/* Antes / Después */
.comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 3rem;
}

.comp-box {
    padding: 3rem;
    border-radius: 12px;
}

.before {
    background: rgba(255, 50, 50, 0.05);
    border: 1px solid rgba(255, 50, 50, 0.2);
}

.after {
    background: rgba(0, 255, 157, 0.05);
    border: 1px solid rgba(0, 255, 157, 0.2);
}

.comp-title {
    font-size: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 1.5rem;
}

.before .comp-title { color: #ff5252; }
.after .comp-title { color: var(--accent-green); }

.comp-flow {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
    line-height: 1.8;
}

.comp-arrow {
    color: var(--text-secondary);
    font-weight: bold;
}

/* Casos Reales */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.case-card {
    background: linear-gradient(135deg, var(--bg-card), rgba(0, 229, 255, 0.05));
    padding: 2.5rem;
    border-radius: 12px;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.05);
}

.case-quote {
    font-size: 1.2rem;
    font-style: italic;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.case-result {
    font-weight: bold;
    color: var(--accent-green);
    font-size: 1.1rem;
}

/* Pricing Grid */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.price-card {
    background: var(--bg-card);
    padding: 3rem;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
    position: relative;
    transition: transform 0.3s;
    display: flex;
    flex-direction: column;
}

.price-card:hover {
    transform: translateY(-5px);
}

.price-card.popular {
    border-color: var(--accent-blue);
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(0, 229, 255, 0.1);
}

.price-card.popular:hover {
    transform: scale(1.05) translateY(-5px);
}

.badge {
    position: absolute;
    top: 0;
    right: 50%;
    transform: translate(50%, -50%);
    background: var(--accent-blue);
    color: var(--bg-dark);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: bold;
    font-size: 0.8rem;
    letter-spacing: 1px;
}

.price-title {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.price {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.price span {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.price-features {
    list-style: none;
    text-align: left;
    margin-bottom: 2rem;
    flex-grow: 1;
}

.price-features li {
    margin-bottom: 1rem;
    color: var(--text-secondary);
    display: flex;
    gap: 10px;
}

.price-features li::before {
    content: '✓';
    color: var(--accent-green);
    font-weight: bold;
}

.price-btn {
    width: 100%;
    text-align: center;
    padding: 1rem;
    margin-top: auto;
}

/* Simulator */
.simulator {
    background: linear-gradient(135deg, var(--bg-card), #0A1120);
    padding: 4rem;
    border-radius: 16px;
    border: 1px solid rgba(0, 229, 255, 0.2);
    text-align: center;
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
}

.sim-input-group {
    margin: 2rem 0;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.sim-input-group label {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.sim-input-group input {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.2);
    color: var(--text-primary);
    padding: 0.8rem;
    border-radius: 5px;
    font-size: 1.5rem;
    width: 100px;
    text-align: center;
}

.sim-input-group input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 10px rgba(0, 229, 255, 0.3);
}

.sim-result {
    font-size: 1.5rem;
    margin-top: 2rem;
    padding: 2rem;
    background: rgba(0, 255, 157, 0.05);
    border-radius: 8px;
    border: 1px solid rgba(0, 255, 157, 0.2);
    line-height: 1.8;
}

.sim-result span {
    font-weight: bold;
    color: var(--accent-green);
    font-size: 2.5rem;
}

/* About Section */
.about {
    display: flex;
    gap: 4rem;
    align-items: center;
}

.about-text {
    flex: 1;
}

.about-text h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--accent-blue);
}

.about-text p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.about-stats {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
}

.stat {
    text-align: center;
}

.stat-num {
    display: block;
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--accent-green);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.about-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.author-avatar {
    width: 250px;
    height: 250px;
    background: radial-gradient(circle, rgba(0, 229, 255, 0.1) 0%, rgba(0,0,0,0) 70%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(0, 229, 255, 0.3);
    box-shadow: 0 0 30px rgba(0, 229, 255, 0.1);
}

/* Lead Magnet */
.lead-magnet {
    background: linear-gradient(90deg, rgba(0, 229, 255, 0.1), rgba(0, 255, 157, 0.1));
    text-align: center;
    padding: 5rem 2%;
    border-radius: 12px;
    border: 1px solid rgba(0, 229, 255, 0.2);
}

.lead-form {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.lead-form input {
    flex: 1;
    padding: 1rem 1.5rem;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    background: rgba(255,255,255,0.9);
    color: #000;
}

.lead-form input:focus {
    outline: 2px solid var(--accent-blue);
}

/* Footer */
footer {
    background: #04070D;
    padding: 3rem 5%;
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-links {
    margin-bottom: 2rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    margin: 0 1.5rem;
    font-weight: 500;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--accent-blue);
}

.copy {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Utils - Animations */
.fade-in {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 900px) {
    .comparison, .about {
        grid-template-columns: 1fr;
        flex-direction: column;
    }
    
    .pricing-grid .price-card.popular {
        transform: none;
    }
    
    .pricing-grid .price-card.popular:hover {
        transform: translateY(-5px);
    }
    
    .hero h1 {
        font-size: 2.8rem;
    }
    
    .nav-links {
        display: none; /* simple mobile approach */
    }
    
    .lead-form {
        flex-direction: column;
    }
    
    .sim-input-group {
        flex-direction: column;
        gap: 0.5rem;
    }
}

@media (max-width: 500px) {
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .hero-ctas {
        flex-direction: column;
    }
    
    .comp-box {
        padding: 2rem;
    }
}