/* ====== Variables Globales ====== */
:root {
    --primary: #2c3e50;
    --secondary: #34495e;
    --accent: #3498db;
    --accent-light: #e0f3ff;
    --text: #333333;
    --text-light: #555555;
    --background: #ffffff;
    --background-alt: #f8f9fa;
    --border: #eaeaea;
    --transition: 0.3s ease-in-out;

    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Lora', serif;

    --section-spacing: 100px;
    --element-spacing: 30px;
    --radius: 8px;
    --shadow: 0 10px 30px rgba(0,0,0,0.05);
}

/* ====== Reset Global ====== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--text);
    background-color: var(--background);
}

/* ====== Navegación (Nav) ====== */
nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    z-index: 100;
    padding: 15px 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 40px;
}

.nav-logo {
    position: relative;
    display: flex;
    align-items: center;
    gap: 15px;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.5rem;
    color: var(--primary);
    text-decoration: none;
}

.header-icons {
    display: flex;
    gap: 15px;
}

.nav-icon {
    color: var(--primary);
    font-size: 1.2rem;
    transition: color var(--transition), transform var(--transition);
}

.nav-icon:hover {
    color: var(--accent);
    transform: translateY(-2px);
}

.nav-menu {
    list-style: none;
    display: flex;
    gap: 30px;
}

.nav-menu a {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text);
    position: relative;
    transition: color var(--transition);
    text-decoration: none;
}

.nav-menu a::after {
    content: "";
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width var(--transition);
}

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

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.nav-menu a.active {
    color: var(--accent);
}

/* ====== Encabezado (Header) ====== */
.header {
    height: 400px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    margin-top: 70px; /* Compensa el nav fijo */
    position: relative;
    overflow: hidden;
}

.header::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 122, 0.836);
    opacity: 0.3;
}

.header-content {
    position: relative;
    z-index: 2;
    padding: 2rem;
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-family: var(--font-heading);
}

.header p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto;
    color: rgba(255, 255, 255, 0.9);
}

/* ====== Sección Introductoria ====== */
.intro-section {
    text-align: center;
    margin-bottom: 4rem;
}

.intro-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
    font-weight: 600;
    line-height: 1.3;
}

.intro-text {
    font-size: 1.2rem;
    color: var(--text-light);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ====== Grid de Productos ====== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.product-card {
    background: var(--background);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 25px rgba(0,0,0,0.1);
    transition: transform var(--transition), box-shadow var(--transition);
    border: 1px solid var(--border);
    position: relative;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.15);
}

.product-card.featured {
    border: 2px solid var(--accent);
}

.product-card.featured::before {
    content: 'Más Popular';
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--accent);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    z-index: 1;
}

/* ====== Encabezado de Producto ====== */
.product-header {
    background: linear-gradient(135deg, var(--accent-light), var(--accent));
    padding: 2rem;
    text-align: center;
    position: relative;
}

.product-icon {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    display: block;
    line-height: 1;
}

.product-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.product-subtitle {
    color: var(--text-light);
    font-size: 1rem;
    opacity: 0.9;
}

/* ====== Contenido de Producto ====== */
.product-content {
    padding: 2rem;
}

.product-description {
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.product-features {
    list-style: none;
    margin-bottom: 2rem;
}

.product-features li {
    padding: 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text);
}

.product-features li::before {
    content: '✓';
    color: var(--accent);
    font-weight: bold;
    font-size: 1.2rem;
}

/* ====== Precio y CTA de Producto ====== */
.product-price {
    text-align: center;
    margin-bottom: 2rem;
}

.price-label {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.price-value {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
}

.price-period {
    color: var(--text-light);
    font-size: 1rem;
}

.product-cta {
    width: 100%;
    background: var(--accent);
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    font-family: var(--font-heading);
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition), transform var(--transition);
    text-decoration: none;
    display: block;
    text-align: center;
}

.product-cta:hover {
    background: #2980b9;
    transform: translateY(-2px);
}

.product-card.featured .product-cta {
    background: var(--primary);
}

.product-card.featured .product-cta:hover {
    background: var(--secondary);
}

/* ====== Sección de Tecnologías ====== */
.technologies-section {
    background: var(--background-alt);
    padding: 4rem 2rem;
    margin: 4rem -2rem;
    border-radius: 16px;
    text-align: center;
}

.technologies-title {
    font-family: var(--font-heading);
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 2rem;
    font-weight: 600;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.tech-item {
    background: var(--background);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.08);
    transition: transform var(--transition);
}

.tech-item:hover {
    transform: translateY(-5px);
}

.tech-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
    line-height: 1;
}

.tech-name {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.tech-description {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* ====== Sección de Llamada a la Acción (CTA) ====== */
.cta-section {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 4rem 2rem;
    margin: 4rem -2rem;
    border-radius: 16px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-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="50" cy="50" r="2" fill="rgba(255,255,255,0.1)"/></svg>') repeat;
    opacity: 0.3;
}

.cta-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.cta-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.3;
}

.cta-text {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-button {
    background: var(--accent);
    color: white;
    padding: 1.2rem 3rem;
    border: none;
    border-radius: 8px;
    font-family: var(--font-heading);
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition), transform var(--transition);
    text-decoration: none;
    display: inline-block;
    margin: 0 0.5rem;
}

.cta-button:hover {
    background: #2980b9;
    transform: translateY(-2px);
}

.cta-button.secondary {
    background: transparent;
    border: 2px solid white;
    color: white;
}

.cta-button.secondary:hover {
    background: white;
    color: var(--primary);
}

/* ====== Footer ====== */
.footer {
    background: var(--primary);
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: 4rem;
}

.footer p {
    font-family: var(--font-heading);
    opacity: 0.8;
}

/* ====== Responsive Design ====== */

/* --- Pantallas medianas (Tablet) --- */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 20px;
    }

    .header {
        height: 300px;
        margin-top: 60px;
    }

    .header h1 {
        font-size: 2rem;
    }

    .intro-title {
        font-size: 2rem;
    }

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

    .cta-title {
        font-size: 2rem;
    }

    .cta-button {
        display: block;
        width: 100%;
        max-width: 300px;
        margin: 0.5rem auto;
    }
}

/* --- Pantallas pequeñas --- */
@media (max-width: 576px) {
    .nav-container {
        flex-direction: column;
        gap: 10px;
        padding: 0 15px;
    }

    .nav-menu {
        gap: 10px;
        font-size: 0.85rem;
    }

    .header {
        height: 280px;
        margin-top: 60px;
    }

    .header h1 {
        font-size: 1.8rem;
        margin-bottom: 10px;
    }

    .header p {
        font-size: 1rem;
    }

    .intro-title {
        font-size: 1.8rem;
    }

    .intro-text {
        font-size: 1rem;
        line-height: 1.5;
    }

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

    .cta-title {
        font-size: 1.8rem;
    }

    .cta-button {
        margin: 0.5rem auto;
    }

    .technologies-title {
        font-size: 1.6rem;
    }

    .tech-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    }
}

/* --- Extra pequeño --- */
@media (max-width: 480px) {
    .nav-container {
        padding: 0 10px;
    }

    .header {
        height: 250px;
        margin-top: 70px;
    }

    .header h1 {
        font-size: 1.5rem;
        line-height: 1.2;
    }

    .header p {
        font-size: 0.9rem;
    }

    .intro-title {
        font-size: 1.5rem;
    }

    .intro-text {
        font-size: 0.9rem;
        line-height: 1.4;
    }

    .product-header {
        padding: 1.5rem;
    }

    .product-content {
        padding: 1.5rem;
    }

    .product-title {
        font-size: 1.3rem;
    }

    .product-subtitle {
        font-size: 0.9rem;
    }

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

    .cta-title {
        font-size: 1.5rem;
    }

    .cta-text {
        font-size: 1rem;
    }
}

/* --- Mejoras para dispositivos táctiles --- */
@media (hover: none) and (pointer: coarse) {
    .nav-icon:hover,
    .product-card:hover,
    .tech-item:hover,
    .cta-button:hover {
        transform: none;
        box-shadow: none;
    }
}