:root {
    --primary: #0052cc;
    --secondary: #00b8d9;
    --dark: #172b4d;
    --text: #44546f;
    --light: #f4f5f7;
    --white: #ffffff;
    --success: #36b37e;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

html { scroll-behavior: smooth; }

body { background: var(--white); color: var(--text); }

.container { width: 90%; max-width: 1200px; margin: auto; }

/* HEADER */
header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 20px 0;
    position: fixed;
    width: 100%;
    top: 0;
    box-shadow: 0 4px 20px rgba(0,0,0,0.03);
    z-index: 1000;
}

header .container { display: flex; align-items: center; justify-content: space-between; }

.logo { font-family: 'Montserrat', sans-serif; font-weight: 800; color: var(--dark); letter-spacing: -1px; }
.logo span { color: var(--primary); }

nav a {
    margin: 0 15px;
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    transition: 0.3s;
}

nav a:hover { color: var(--primary); }

.btn-login-header {
    background: var(--primary);
    color: white;
    padding: 10px 24px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: 0.3s;
}

.btn-login-header:hover { transform: scale(1.05); box-shadow: 0 5px 15px rgba(0,82,204,0.3); }

/* HERO */
.hero {
    padding: 180px 0 120px;
    text-align: center;
    background: radial-gradient(circle at top right, #f0f7ff, #ffffff);
    overflow: hidden;
}

.badge {
    background: #e6f0ff;
    color: var(--primary);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 20px;
    display: inline-block;
}

.hero h1 {
    font-family: 'Montserrat', sans-serif;
    font-size: 3.5rem;
    color: var(--dark);
    line-height: 1.2;
    margin-bottom: 25px;
}

.hero h1 span { color: var(--primary); }

.hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 40px;
    color: var(--text);
}

.btn-primary-hero {
    background: var(--primary);
    color: white;
    padding: 16px 32px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    display: inline-block;
    transition: 0.3s;
}

.btn-whatsapp-hero {
    background: var(--success);
    color: white;
    padding: 16px 32px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-left: 15px;
    transition: 0.3s;
}

/* SECTIONS */
.section { padding: 100px 0; }
.section-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 2.2rem;
    color: var(--dark);
    margin-bottom: 50px;
    text-align: center;
}

.section-title.left { text-align: left; }

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card {
    background: white;
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    transition: 0.4s;
    border: 1px solid #f0f0f0;
}

.card:hover { transform: translateY(-10px); border-color: var(--primary); }

.card .icon {
    font-size: 48px;
    color: var(--primary);
    margin-bottom: 20px;
    display: block;
}

.card h3 { color: var(--dark); margin-bottom: 15px; }

/* BENEFICIOS SPLIT */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }

.lista-check { list-style: none; }
.lista-check li {
    font-size: 1.1rem;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.check { color: var(--success); font-weight: bold; }

.placeholder-img {
    background: linear-gradient(135deg, #0052cc, #00b8d9);
    height: 400px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 800;
    font-size: 1.5rem;
    box-shadow: 0 20px 40px rgba(0,82,204,0.2);
}

/* CTA */
.cta {
    background: var(--dark);
    color: white;
    text-align: center;
    padding: 100px 0;
    margin: 50px 0;
}

.btn-cta {
    background: var(--primary);
    color: white;
    padding: 20px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    display: inline-block;
    margin-top: 30px;
}

/* FOOTER */
footer { padding: 50px; text-align: center; border-top: 1px solid #eee; color: var(--text); }

@media (max-width: 768px) {
    .split { grid-template-columns: 1fr; }
    .hero h1 { font-size: 2.2rem; }
    .btn-whatsapp-hero { margin-left: 0; margin-top: 15px; width: 100%; justify-content: center; }
}