/* ========================================
   SEDITEC - Autodiagnóstico Digital
   Estilos principales
   ======================================== */

/* Variables CSS */
:root {
    /* Colores corporativos */
    --color-dark: #151515;
    --color-light: #ebebeb;
    --color-white: #ffffff;
    --color-text: #7d7d7d;
    --color-title: #313131;

    /* Colores de acento */
    --color-primary: #313131;
    --color-primary-hover: #151515;

    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 5rem;

    /* Tipografía */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Bordes */
    --border-radius: 8px;
    --border-radius-lg: 12px;

    /* Transiciones */
    --transition: all 0.3s ease;
}

/* Reset y base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Contenedor */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Tipografía */
h1, h2, h3, h4, h5, h6 {
    color: var(--color-title);
    font-weight: 600;
    line-height: 1.2;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(2rem, 4vw, 2.75rem);
    margin-bottom: var(--spacing-lg);
}

h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

h4 {
    font-size: 1.1rem;
}

p {
    margin-bottom: var(--spacing-sm);
}

.lead {
    font-size: 1.125rem;
    line-height: 1.7;
}

a {
    color: var(--color-title);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--color-dark);
}

strong {
    color: var(--color-title);
    font-weight: 600;
}

/* Botones */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: var(--color-title);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(21, 21, 21, 0.3);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--color-light);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: -0.5px;
}

.nav {
    display: flex;
    gap: var(--spacing-lg);
}

.nav a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text);
}

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

/* Hero Section */
.hero {
    padding: calc(70px + var(--spacing-xl)) 0 var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-white) 0%, var(--color-light) 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
}

.hero .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin-bottom: var(--spacing-xl);
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--color-dark);
    color: var(--color-white);
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: 50px;
    margin-bottom: var(--spacing-md);
}

.hero h1 {
    margin-bottom: var(--spacing-md);
    font-size: clamp(2rem, 5vw, 3.25rem);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Pulse animation for CTA */
.pulse-animation {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(21, 21, 21, 0.4);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(21, 21, 21, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(21, 21, 21, 0);
    }
}

/* Hero Stats */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
    padding: var(--spacing-lg);
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 10px 40px rgba(21, 21, 21, 0.08);
}

.hero-stat-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.hero-stat-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background-color: var(--color-light);
    border-radius: 50%;
    color: var(--color-dark);
}

.hero-stat-text {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.hero-stat-text strong {
    font-size: 1rem;
    color: var(--color-title);
}

.hero-stat-text span {
    font-size: 0.85rem;
    color: var(--color-text);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-text);
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
}

.scroll-indicator:hover {
    color: var(--color-dark);
}

.scroll-arrow {
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(8px);
    }
    60% {
        transform: translateY(4px);
    }
}

/* Secciones */
.section {
    padding: var(--spacing-2xl) 0;
}

.section-light {
    background-color: var(--color-white);
}

.section-dark {
    background-color: var(--color-dark);
    color: var(--color-light);
}

.section-dark h2,
.section-dark h3,
.section-dark h4,
.section-dark strong {
    color: var(--color-white);
}

.section-dark p {
    color: var(--color-light);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-badge {
    display: inline-block;
    padding: 0.4rem 0.8rem;
    background-color: var(--color-light);
    color: var(--color-title);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 50px;
    margin-bottom: var(--spacing-sm);
}

.section-badge-light {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
}

/* Content Grid */
.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.content-text p {
    margin-bottom: var(--spacing-md);
}

/* Feature List */
.feature-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.feature-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--color-light);
    border-radius: var(--border-radius);
}

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background-color: var(--color-white);
    border-radius: var(--border-radius);
    color: var(--color-dark);
    flex-shrink: 0;
}

.feature-item p {
    margin-bottom: 0;
    font-size: 0.9rem;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.stat-card {
    text-align: center;
    padding: var(--spacing-lg);
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--color-white);
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

.stat-card p {
    font-size: 0.95rem;
    margin-bottom: 0;
}

/* Importance Content */
.importance-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.importance-item {
    padding: var(--spacing-lg);
    border-left: 3px solid rgba(255, 255, 255, 0.3);
}

.importance-item h3 {
    margin-bottom: var(--spacing-sm);
}

.importance-item p {
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* Benefits Grid */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.benefit-card {
    padding: var(--spacing-lg);
    background-color: var(--color-light);
    border-radius: var(--border-radius-lg);
    transition: var(--transition);
}

.benefit-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(21, 21, 21, 0.1);
}

.benefit-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background-color: var(--color-white);
    border-radius: var(--border-radius);
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
}

.benefit-card h3 {
    margin-bottom: var(--spacing-xs);
}

.benefit-card p {
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* CTA Section */
.section-cta {
    background: linear-gradient(135deg, var(--color-dark) 0%, #2a2a2a 100%);
    color: var(--color-white);
    text-align: center;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.cta-content > p {
    font-size: 1.1rem;
    color: var(--color-light);
    margin-bottom: var(--spacing-lg);
}

.cta-features {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.cta-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-light);
    font-size: 0.95rem;
}

.cta-feature svg {
    color: #4ade80;
}

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

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

.cta-note {
    margin-top: var(--spacing-md);
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
}

/* Footer */
.footer {
    background-color: var(--color-dark);
    color: var(--color-light);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: var(--spacing-lg);
}

.footer-brand p {
    margin-top: var(--spacing-xs);
    margin-bottom: 0;
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-links a {
    color: var(--color-light);
    font-size: 0.95rem;
}

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

.footer-bottom {
    text-align: center;
}

.footer-bottom p {
    margin-bottom: 0;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
}

/* Responsive */
@media (max-width: 992px) {
    .hero-stats {
        gap: var(--spacing-md);
    }

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

    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

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

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

@media (max-width: 768px) {
    .nav {
        display: none;
    }

    .hero {
        padding-bottom: var(--spacing-2xl);
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
        padding: var(--spacing-md);
    }

    .hero-stat-item {
        justify-content: flex-start;
        width: 100%;
    }

    .scroll-indicator {
        display: none;
    }

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

    .cta-features {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm);
    }

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