/* === CSS MIGRADO COMPLETO DE FRONT/INDEX.HTML === */
:root {
    --primary-color: #6a0dad;
    --secondary-color: #e0b0ff;
    --accent-color: #ffcc00;
    --text-color: #f0f0f0;
    --dark-background: #1a0333;
    --card-background: #2a0640;
    --button-hover: #8e2de2;
}
html {
    font-size: 18px;
}

body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--dark-background);
    color: var(--text-color);
    line-height: 1.6;
    display: flex; /* Para estructura header/main/footer */
    flex-direction: column; /* Para estructura header/main/footer */
    min-height: 100vh; /* Asegura que el footer quede abajo, permite crecer para scroll */
    /* overflow: hidden; ELIMINADO para permitir scroll en la landing */
    /* height: 100vh; CAMBIADO a min-height */
}

main {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    min-height: 0; /* Permite que los hijos flex calculen correctamente su tamaño para el scroll */
    overflow: hidden; /* Evita que main mismo intente hacer scroll */
}

.hero h1 {
    font-size: 3.8em;
}

.features h2, .ai-models h2, .pricing h2, .call-to-action h2 {
    font-size: 2.8em;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}
/* Header */
header {
    background-color: var(--card-background);
    padding: 15px 0;
    border-bottom: 2px solid var(--primary-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}
header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-size: 1.8em;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}
nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 25px;
}
nav ul li a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}
nav ul li a:hover {
    color: var(--primary-color);
}
.auth-buttons a {
    background-color: var(--primary-color);
    color: white;
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    transition: background-color 0.3s ease;
}
.auth-buttons a:hover {
    background-color: var(--button-hover);
}
/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--dark-background) 0%, #3a0b5c 100%);
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: -50px;
    left: -50px;
    width: 200px;
    height: 200px;
    background-color: var(--secondary-color);
    border-radius: 50%;
    opacity: 0.1;
    filter: blur(50px);
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -50px;
    right: -50px;
    width: 250px;
    height: 250px;
    background-color: var(--accent-color);
    border-radius: 50%;
    opacity: 0.08;
    filter: blur(60px);
}
.hero h1 {
    font-size: 3.5em;
    margin-bottom: 20px;
    color: white;
    line-height: 1.2;
}
.hero p {
    font-size: 1.3em;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    color: var(--secondary-color);
}
.cta-button {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--dark-background);
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1em;
    transition: transform 0.3s ease, background-color 0.3s ease;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.4);
}
.cta-button:hover {
    transform: translateY(-3px);
    background-color: #ffdb4d;
}
/* Features Section */
.features {
    padding: 60px 0;
    background-color: var(--dark-background);
}
.features h2 {
    text-align: center;
    font-size: 2.5em;
    margin-bottom: 50px;
    color: var(--primary-color);
}
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}
.feature-card {
    background-color: var(--card-background);
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--primary-color);
}
.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}
.feature-card h3 {
    color: var(--accent-color);
    font-size: 1.5em;
    margin-bottom: 15px;
}
.feature-card p {
    color: var(--secondary-color);
    font-size: 0.95em;
}
/* AI Models Section */
.ai-models {
    padding: 60px 0;
    background-color: var(--card-background);
    text-align: center;
}
.ai-models h2 {
    font-size: 2.5em;
    margin-bottom: 50px;
    color: var(--primary-color);
}
.model-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 25px;
}
.model-item {
    background-color: var(--dark-background);
    padding: 25px 15px;
    border-radius: 15px;
    font-weight: 600;
    color: var(--accent-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--primary-color);
    width: 160px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}
.model-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
    border-color: var(--accent-color);
}
.model-logo {
    width: 60px;
    height: 60px;
    object-fit: contain;
    margin-bottom: 10px;
}
/* Pricing Section */
.pricing {
    padding: 60px 0;
    background-color: var(--dark-background);
}
.pricing h2 {
    text-align: center;
    font-size: 2.5em;
    margin-bottom: 50px;
    color: var(--primary-color);
}
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    justify-content: center;
}
.price-card {
    background-color: var(--card-background);
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    border: 2px solid var(--primary-color);
    transition: transform 0.3s ease, border-color 0.3s ease;
}
.price-card.featured {
    border-color: var(--accent-color);
    transform: scale(1.03);
}
.price-card:hover {
    transform: translateY(-5px);
}
.price-card h3 {
    font-size: 1.8em;
    color: white;
    margin-bottom: 10px;
}
.price {
    font-size: 2.5em;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 20px;
}
.price span {
    font-size: 0.5em;
    color: var(--secondary-color);
    font-weight: 400;
}
.price-card ul {
    list-style: none;
    padding: 0;
    margin-bottom: 30px;
    text-align: left;
}
.price-card ul li {
    margin-bottom: 10px;
    color: var(--secondary-color);
    display: flex;
    align-items: center;
}
.price-card ul li::before {
    content: '✔';
    color: var(--accent-color);
    margin-right: 10px;
    font-size: 1.2em;
}
.price-card .select-plan {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 12px 25px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    transition: background-color 0.3s ease;
}
.price-card .select-plan:hover {
    background-color: var(--button-hover);
}
/* Call to Action Section */
.call-to-action {
    background-color: var(--primary-color);
    padding: 80px 0;
    text-align: center;
    color: white;
    background: linear-gradient(90deg, #8e2de2 0%, var(--primary-color) 100%);
}
.call-to-action h2 {
    font-size: 2.8em;
    margin-bottom: 20px;
}
.call-to-action p {
    font-size: 1.2em;
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    color: var(--secondary-color);
}
/* Footer */
footer {
    background-color: var(--card-background);
    color: var(--secondary-color);
    text-align: center;
    padding: 10px 0; /* Reducido aún más para un footer mínimo */
    border-top: 2px solid var(--primary-color);
}
footer p {
    margin: 0;
}
/* Responsive Design */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        gap: 15px;
    }
    nav ul {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }
    .hero h1 {
        font-size: 2.5em;
    }
}
@media (max-width: 480px) {
    .hero h1 {
        font-size: 2em;
    }
    .hero p {
        font-size: 1em;
    }
    .cta-button {
        padding: 12px 25px;
        font-size: 1em;
    }
    .model-item {
        padding: 10px 20px;
        font-size: 0.9em;
    }
}