/* ===================================
   Landing Page Styles
   =================================== */

/* Header / Navegación */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    z-index: var(--z-fixed);
    transition: all var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.nav-logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 40px;
    width: auto;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-2xl);
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    list-style: none;
}

.nav-link {
    font-weight: 500;
    color: var(--color-primary);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-secondary);
    transition: width var(--transition-base);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.nav-toggle-icon,
.nav-toggle-icon::before,
.nav-toggle-icon::after {
    width: 24px;
    height: 2px;
    background-color: var(--color-primary);
    transition: all var(--transition-base);
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
    content: '';
    display: block;
}

.nav-toggle-icon::before {
    transform: translateY(-6px);
}

.nav-toggle-icon::after {
    transform: translateY(4px);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-background) 0%, var(--color-accent) 100%);
    opacity: 0.3;
    z-index: -1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    padding: var(--spacing-3xl) 0;
}

.hero-title {
    font-size: var(--text-5xl);
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
}

.highlight {
    color: var(--color-secondary);
    position: relative;
    display: inline-block;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 8px;
    left: 0;
    width: 100%;
    height: 12px;
    background-color: var(--color-accent);
    opacity: 0.4;
    z-index: -1;
}

.hero-description {
    font-size: var(--text-xl);
    line-height: 1.6;
    color: var(--color-black);
    margin-bottom: var(--spacing-2xl);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.hero-trust {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xl);
}

.trust-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-secondary);
    font-weight: 500;
}

.trust-item svg {
    flex-shrink: 0;
}

.hero-image-wrapper {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    min-height: 600px;
    height: 100%;
}

.carlos-photo {
    width: 100%;
    height: 100%;
    min-height: 600px;
    display: block;
    object-fit: cover;
    object-position: 20% center;
}

.hero-badge {
    position: absolute;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.badge-icon {
    font-size: var(--text-3xl);
}

.badge-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.badge-text strong {
    font-size: var(--text-lg);
    color: var(--color-primary);
}

.badge-text span {
    font-size: var(--text-sm);
    color: var(--color-black);
}

/* Section Headers */
.section-header {
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: var(--text-4xl);
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: var(--text-xl);
    color: #6B7280;
    font-weight: 400;
}

/* About Section */
.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-text p {
    font-size: var(--text-lg);
    line-height: 1.8;
    color: #4B5563;
}

.about-features {
    margin-top: var(--spacing-2xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.feature-item {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background-color: var(--color-background);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.feature-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    font-size: var(--text-4xl);
    flex-shrink: 0;
}

.feature-content h4 {
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.feature-content p {
    font-size: var(--text-base);
    color: #6B7280;
    margin: 0;
}

/* Subjects Section */
.subjects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-2xl);
    max-width: 1000px;
    margin: 0 auto;
}

.subject-card {
    text-align: center;
}

.subject-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
}

.subject-title {
    font-size: var(--text-2xl);
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.subject-description {
    font-size: var(--text-base);
    color: #6B7280;
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.subject-topics {
    list-style: none;
    text-align: left;
}

.subject-topics li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-xl);
    position: relative;
    color: var(--color-black);
}

.subject-topics li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-secondary);
    font-weight: bold;
}

/* Steps Section */
.steps-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
    flex-wrap: wrap;
}

.step-card {
    flex: 1;
    min-width: 200px;
    max-width: 250px;
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    position: relative;
    text-align: center;
    transition: all var(--transition-base);
}

.step-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.step-number {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background-color: var(--color-secondary);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: var(--text-lg);
    box-shadow: var(--shadow-md);
}

.step-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.step-title {
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.step-description {
    font-size: var(--text-sm);
    color: #6B7280;
    line-height: 1.6;
}

.step-arrow {
    font-size: var(--text-3xl);
    color: var(--color-accent);
    font-weight: bold;
}

/* Pricing Section */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-2xl);
    max-width: 1200px;
    margin: 0 auto;
}

.pricing-card {
    position: relative;
    text-align: center;
    transition: all var(--transition-base);
}

.pricing-card:hover {
    transform: scale(1.05);
}

.pricing-featured {
    border: 3px solid var(--color-secondary);
    transform: scale(1.05);
}

.pricing-featured:hover {
    transform: scale(1.08);
}

.pricing-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-secondary);
    color: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
    box-shadow: var(--shadow-md);
}

.pricing-header {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 2px solid var(--color-accent);
}

.pricing-title {
    font-size: var(--text-2xl);
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
}

.pricing-price {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
}

.price-currency {
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--color-secondary);
    margin-top: 8px;
}

.price-amount {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1;
    color: var(--color-primary);
}

.pricing-period {
    font-size: var(--text-base);
    color: #6B7280;
    margin-bottom: var(--spacing-sm);
}

.pricing-save {
    font-size: var(--text-sm);
    color: var(--color-success);
    font-weight: 600;
}

.pricing-features {
    list-style: none;
    margin-bottom: var(--spacing-xl);
    text-align: left;
}

.pricing-features li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    color: var(--color-black);
}

.pricing-features svg {
    flex-shrink: 0;
    color: var(--color-success);
    margin-top: 2px;
}

/* FAQ Section */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: var(--spacing-md);
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    background: none;
    border: none;
    text-align: left;
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.faq-question:hover {
    background-color: var(--color-background);
}

.faq-icon {
    flex-shrink: 0;
    transition: transform var(--transition-base);
    color: var(--color-secondary);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.faq-answer p {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    color: #6B7280;
    line-height: 1.6;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    padding: var(--spacing-3xl) 0;
    color: var(--color-white);
}

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

.cta-title {
    font-size: var(--text-4xl);
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
}

.cta-description {
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-2xl);
    opacity: 0.9;
}

.cta-section .btn-primary {
    background-color: var(--color-white);
    color: var(--color-primary);
    border-color: var(--color-white);
}

.cta-section .btn-primary:hover {
    background-color: var(--color-background);
    border-color: var(--color-background);
}

/* Footer */
.footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-logo {
    height: 40px;
    width: auto;
    margin-bottom: var(--spacing-md);
    filter: brightness(0) invert(1);
}

.footer-description {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--text-sm);
    line-height: 1.6;
}

.footer-title {
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-md);
    color: var(--color-white);
}

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

.footer-links li,
.footer-contact li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a,
.footer-contact a {
    color: rgba(255, 255, 255, 0.8);
    transition: color var(--transition-fast);
    font-size: var(--text-sm);
}

.footer-links a:hover,
.footer-contact a:hover {
    color: var(--color-white);
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.footer-contact svg {
    flex-shrink: 0;
}

.footer-schedule {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--text-sm);
    line-height: 1.8;
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    padding-top: var(--spacing-lg);
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.6);
    text-align: center;
}

.footer-legal {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.footer-legal a {
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--transition-fast);
}

.footer-legal a:hover {
    color: var(--color-white);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .hero-image {
        order: -1;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .pricing-featured {
        transform: scale(1);
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: var(--color-white);
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-2xl);
        gap: var(--spacing-lg);
        transition: left var(--transition-base);
        box-shadow: var(--shadow-lg);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-title {
        font-size: var(--text-3xl);
    }

    .hero-description {
        font-size: var(--text-lg);
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-trust {
        flex-direction: column;
    }

    .subjects-grid {
        grid-template-columns: 1fr;
    }

    .steps-container {
        flex-direction: column;
    }

    .step-arrow {
        transform: rotate(90deg);
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}