/* === VARIABLES DE MARCA === */
:root {
    --color-primary-dark: #0D1B4E;
    --color-primary-light: #1A5A96;
    --color-accent-orange: #F5A623;
    --color-accent-green: #2E8B57;
    --color-accent-cyan: #00A0B0;
    --color-text-primary: #212529;
    --color-text-secondary: #495057;
    --color-background: #F8F9FA;
    --color-paper: #FFFFFF;
    --color-border: #DEE2E6;
    --font-headings: 'Roboto Slab', serif;
    --font-body: 'Open Sans', sans-serif;
}

/* === RESET Y BASE === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    color: var(--color-text-primary);
    line-height: 1.7;
    background-color: var(--color-background);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* === TIPOGRAFÍA === */
h1, h2, h3, h4 {
    font-family: var(--font-headings);
    color: var(--color-primary-dark);
    line-height: 1.3;
}

h1 { font-size: clamp(2.5rem, 5vw, 3.5rem); font-weight: 700; }
h2 { font-size: clamp(2rem, 4vw, 2.5rem); font-weight: 700; }
h3 { font-size: clamp(1.5rem, 3vw, 1.75rem); font-weight: 700; }
h4 { font-size: 1.25rem; font-weight: 600; }

p { font-size: 1.1rem; color: var(--color-text-secondary); }
.lead { font-size: 1.25rem; font-weight: 400; }

/* === BOTONES === */
.btn {
    display: inline-block;
    padding: 16px 32px;
    border: none;
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 1.1rem;
    font-weight: 700;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 0.5px;
    min-width: 200px;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary-light));
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary-dark));
}

.btn-accent {
    background: linear-gradient(135deg, var(--color-accent-orange), #e0930f);
    color: white;
    box-shadow: 0 4px 15px rgba(245, 166, 35, 0.3);
}

.btn-accent:hover {
    background: linear-gradient(135deg, #e0930f, var(--color-accent-orange));
    box-shadow: 0 8px 25px rgba(245, 166, 35, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary-dark);
    border: 2px solid var(--color-primary-dark);
}

.btn-outline:hover {
    background: var(--color-primary-dark);
    color: white;
}

/* === HEADER === */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 15px 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--color-border);
    transition: all 0.3s ease;
}

.header.scrolled {
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

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

.logo {
    max-width: 180px;
    height: auto;
}

.nav {
    display: none;
    gap: 30px;
}

.nav a {
    color: var(--color-text-primary);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

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

@media (min-width: 768px) {
    .nav { display: flex; }
}

/* === HERO SECTION === */
.hero {
    background: linear-gradient(135deg, var(--color-paper) 0%, #f0f4ff 100%);
    padding: 120px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23e0e7ff" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero h1 {
    margin-bottom: 24px;
    margin-top: 100px;
    color: var(--color-primary-dark);
    font-weight: 700;
    font-size: 3.5rem;
    line-height: 1.2;
}

.hero .lead {
    max-width: 700px;
    margin: 0 auto 40px;
    color: var(--color-text-secondary);
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: 20px;
    align-items: center;
    margin-bottom: 60px;
}

@media (min-width: 768px) {
    .hero-cta {
        flex-direction: row;
        justify-content: center;
    }
}

.hero-image {
    max-width: 600px;
    width: 100%;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(13, 27, 78, 0.15);
    transition: transform 0.3s ease;
}

.hero-image:hover {
    transform: translateY(-10px);
}

/* === TRUST INDICATORS === */
.trust-section {
    background: var(--color-paper);
    padding: 40px 0;
    border-bottom: 1px solid var(--color-border);
}

.trust-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
    text-align: center;
}

@media (min-width: 768px) {
    .trust-content {
        flex-direction: row;
        justify-content: space-around;
    }
}

.trust-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.trust-number {
    font-family: var(--font-headings);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent-orange);
}

.trust-label {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    font-weight: 600;
}

/* === PROBLEM SECTION === */
.problem-section {
    padding: 80px 0;
    background: var(--color-background);
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

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

.problem-card {
    background: var(--color-paper);
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 8px 30px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    border: 1px solid var(--color-border);
}

.problem-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.12);
}

.problem-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent-cyan));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: white;
    font-size: 2rem;
}

.problem-card h3 {
    margin-bottom: 16px;
    color: var(--color-primary-dark);
}

/* === SOLUTION SECTION === */
.solution-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary-light));
    color: white;
    position: relative;
    overflow: hidden;
}

.solution-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="2" fill="rgba(255,255,255,0.1)"/><circle cx="80" cy="40" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="40" cy="80" r="1.5" fill="rgba(255,255,255,0.1)"/></svg>');
}

.solution-content {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr;
    gap: 60px;
    align-items: center;
}

@media (min-width: 768px) {
    .solution-content {
        grid-template-columns: 1fr 1fr;
    }
}

.solution-section h2 {
    color: white;
    margin-bottom: 24px;
}

.solution-section p {
    color: rgba(255,255,255,0.9);
    font-size: 1.2rem;
    margin-bottom: 32px;
}

.solution-features {
    list-style: none;
    margin-bottom: 40px;
}

.solution-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    color: rgba(255,255,255,0.9);
}

.solution-features li::before {
    content: '✓';
    background: var(--color-accent-green);
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 0.8rem;
}

.solution-graphic {
    text-align: center;
}

.solution-graphic img {
    max-width: 100%;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

/* === HOW IT WORKS === */
.how-it-works {
    padding: 100px 0;
    background: var(--color-paper);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.step-card {
    text-align: center;
    padding: 40px 30px;
    border-radius: 16px;
    background: var(--color-background);
    border: 2px solid transparent;
    transition: all 0.3s ease;
    position: relative;
}

.step-card:hover {
    border-color: var(--color-accent-orange);
    transform: translateY(-5px);
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-accent-orange), #e0930f);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-headings);
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 24px;
    box-shadow: 0 8px 25px rgba(245, 166, 35, 0.3);
}

.step-card h3 {
    margin-bottom: 16px;
}

/* === PHILOSOPHY SECTION === */
.philosophy-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary-light));
    color: white;
    text-align: center;
}

.philosophy-section h2 {
    color: white;
    margin-bottom: 40px;
}

.philosophy-content {
    max-width: 800px;
    margin: 0 auto;
}

.philosophy-text {
    font-size: 1.2rem;
    line-height: 1.8;
    margin-bottom: 24px;
    color: rgba(255,255,255,0.9);
}

.philosophy-text strong {
    color: var(--color-accent-orange);
    font-weight: 700;
}

/* === PUBLICATIONS SECTION === */
.publications-section {
    padding: 100px 0;
    background: var(--color-background);
}

.publications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.post-card {
    background: var(--color-paper);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    border: 1px solid var(--color-border);
    
}

.post-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.12);
}

.post-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.post-card-content {
    padding: 30px;
}

.post-card-content .date {
    font-size: 0.9rem;
    color: var(--color-accent-orange);
    font-weight: 600;
    margin-bottom: 12px;
}

.post-card-content h3 {
    margin-bottom: 16px;
    color: var(--color-primary-dark);
    font-size: 1.3rem;
}

.post-card-content p {
    margin-bottom: 20px;
    color: var(--color-text-secondary);
}

.read-more {
    color: var(--color-primary-light);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.read-more:hover {
    color: var(--color-primary-dark);
}

/* --- ESTILOS REFINADOS PARA TARJETAS DE ARTÍCULO SIN IMAGEN --- */
.post-card-icon {
    /* Mantenemos el fondo blanco como las otras tarjetas */
    background: var(--color-paper);
    padding: 30px; /* Añadimos padding uniforme */
    border-left: 5px solid var(--color-accent-orange); 
}

.post-card-icon .card-icon-wrapper {
    /* Eliminamos el padding extra ya que está en el padre */
    padding: 0 0 20px 0; 
    text-align: left; /* Alineamos el icono a la izquierda */
    border-bottom: 1px solid var(--color-border); /* Separador sutil */
    margin-bottom: 20px;
}

.post-card-icon svg {
    width: 40px;
    height: 40px;
    color: var(--color-primary-light); /* Usamos el azul corporativo */
    opacity: 1; /* Opacidad completa */
}

/* Devolvemos los colores de texto originales para fondo blanco */
.post-card-icon h3 {
    color: var(--color-primary-dark);
}

.post-card-icon .date {
    color: var(--color-accent-orange);
}

.post-card-icon p {
    color: var(--color-text-secondary);
}

.post-card-icon .read-more {
    color: var(--color-primary-light);
    font-weight: 600;
}
/* === OFFER SECTION === */
.offer-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #f0f4ff, var(--color-background));
    text-align: center;
}

.offer-card {
    max-width: 600px;
    margin: 0 auto;
    background: var(--color-paper);
    padding: 50px 40px;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
    border: 3px solid var(--color-accent-orange);
    position: relative;
}

.offer-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-accent-orange);
    color: white;
    padding: 8px 24px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.9rem;
}

.offer-title {
    margin-bottom: 16px;
    color: var(--color-primary-dark);
}

.offer-price {
    font-family: var(--font-headings);
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin: 24px 0;
}

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

.offer-features {
    list-style: none;
    margin: 40px 0;
    text-align: left;
}

.offer-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    font-size: 1.1rem;
}

.offer-features li::before {
    content: '✓';
    background: var(--color-accent-green);
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 0.8rem;
}

.offer-guarantee {
    background: #e8f5e9;
    padding: 20px;
    border-radius: 12px;
    margin: 30px 0;
    border-left: 4px solid var(--color-accent-green);
}

.offer-guarantee h4 {
    color: var(--color-accent-green);
    margin-bottom: 8px;
}

/* === LEAD MAGNET === */
.lead-magnet {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--color-accent-green), #4caf50);
    color: white;
    text-align: center;
}

.lead-magnet h2 {
    color: white;
    margin-bottom: 24px;
}

.lead-magnet p {
    color: rgba(255,255,255,0.9);
    max-width: 600px;
    margin: 0 auto 40px;
    font-size: 1.2rem;
}

.lead-form {
    max-width: 500px;
    margin: 0 auto;
    display: flex;
    flex-direction: column; 
    gap: 20px; /* <-- Aumentamos el espacio para que se vea mejor */
}

.lead-form input { 
    /* Hemos eliminado 'flex: 1;' para que los campos ocupen el ancho completo */
    padding: 16px 20px;
    border: 1px solid var(--color-border); 
    border-radius: 8px;
    font-size: 1.1rem;
    background: #FFFFFF; 
}

.lead-form input:focus {
    outline: none;
    background: white;
    box-shadow: 0 0 0 3px rgba(255,255,255,0.3);
}

.btn-white {
    background: white;
    color: var(--color-accent-green);
    font-weight: 700;
}

.btn-white:hover {
    background: #f5f5f5;
    transform: translateY(-2px);
}

/* === FOOTER === */
.footer {
    background: var(--color-text-primary);
    color: var(--color-border);
    padding: 60px 0 30px;
    text-align: center;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: 2fr 1fr 1fr;
        text-align: left;
    }
}

.footer-logo {
    max-width: 200px;
    opacity: 0.8;
    margin-bottom: 20px;
}

.footer h4 {
    color: white;
    margin-bottom: 20px;
}

.footer a {
    color: var(--color-border);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer a:hover {
    color: white;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 30px;
    font-size: 0.9rem;
}

/* === ANIMATIONS === */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* === RESPONSIVE === */
@media (max-width: 767px) {
    .container {
        padding: 0 16px;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .section-title {
        margin-bottom: 40px;
    }
    
    .problem-section,
    .how-it-works,
    .offer-section {
        padding: 60px 0;
    }
    
    .solution-section {
        padding: 80px 0;
    }
}

/* --- ESTILOS PARA MENSAJE DE ÉXITO DEL FORMULARIO DEMO --- */
.form-success-message {
    background-color: rgba(255, 255, 255, 0.98);
    color: var(--color-text-primary);
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    border: 1px solid var(--color-border);
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
    animation: fadeIn 0.5s ease;
}

.form-success-message .success-icon {
    font-size: 2.5rem;
    color: var(--color-accent-green);
    line-height: 1;
    margin-bottom: 15px;
}

.form-success-message h3 {
    font-family: var(--font-headings);
    color: var(--color-primary-dark);
    margin-bottom: 10px;
    font-size: 1.5rem;
}

.form-success-message p {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    margin-bottom: 0;
}

/* Pequeña animación para la aparición */
@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}