/* styles.css - Estilos principales de la landing page */

/* Variables CSS para fácil personalización */
:root {
    --primary-color: #0052cc; /* Azul corporativo */
    --secondary-color: #00c2ff; /* Azul vibrante, para highlights */
    --dark-bg: #0a2540; /* Fondo oscuro principal */
    --light-bg: #f4f7f6; /* Fondo claro para secciones */
    --text-light: #ffffff;
    --text-dark: #333333;
    --text-grey: #666666;
    --font-main: 'Inter', sans-serif;
    --border-radius-sm: 6px;
    --border-radius-md: 10px;
    --spacing-unit: 20px;
}

body {
    font-family: var(--font-main);
    color: var(--text-dark);
    line-height: 1.6;
    margin: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Secciones generales */
.section-padded {
    padding: 80px 0;
}

.section-padded h2 {
    font-size: 2.5em;
    color: var(--text-dark);
    text-align: center;
    margin-bottom: 40px;
    font-weight: 700;
}

.section-padded h3 {
    font-size: 1.6em;
    color: var(--text-dark);
    margin-bottom: 15px;
    font-weight: 600;
}

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

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

.bg-dark-gradient h2, .bg-dark-gradient p, .bg-dark-gradient label {
    color: var(--text-light);
}

.highlight {
    color: var(--secondary-color);
}

/* --- Header y Navegación --- */
header {
    background-color: var(--dark-bg);
    padding: var(--spacing-unit) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.logo {
    color: var(--text-light);
    font-size: 1.8em;
    font-weight: 700;
    text-decoration: none;
}

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

.nav-links li a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 400;
    transition: color 0.3s ease;
    padding: 5px 10px;
    border-radius: var(--border-radius-sm);
}

.nav-links li a:hover,
.nav-links li a.btn-nav:hover {
    color: var(--secondary-color);
    background-color: rgba(255,255,255,0.1);
}

.btn-nav {
    background-color: var(--primary-color);
    padding: 8px 15px;
    border-radius: var(--border-radius-sm);
    font-weight: 600 !important;
    transition: background-color 0.3s ease;
}

/* --- Hero Section --- */
.hero {
    background: linear-gradient(135deg, var(--dark-bg), #003a8d); /* Gradiente más oscuro */
    color: var(--text-light);
    padding: 120px 0;
    text-align: center;
    display: flex;
    align-items: center;
    min-height: 70vh; /* Altura mínima para que sea más imponente */
    /* Si quieres una imagen de fondo, descomenta lo siguiente y ajusta la ruta */
    /* background: url('../assets/img/hero-bg.jpg') no-repeat center center/cover; */
    /* position: relative; */
}
/* .hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(135deg, rgba(10, 37, 64, 0.8), rgba(0, 82, 204, 0.7));
    z-index: 1;
}
.hero .container {
    position: relative;
    z-index: 2;
} */


.hero h1 {
    font-size: 3.8em;
    margin-bottom: var(--spacing-unit);
    font-weight: 700;
    line-height: 1.2;
}

.hero .subtitle {
    font-size: 1.5em;
    margin-bottom: 40px;
    font-weight: 300;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.cta-group {
    display: flex;
    justify-content: center;
    gap: var(--spacing-unit);
    flex-wrap: wrap; /* Para responsive */
}

/* --- Botones Generales --- */
.btn-primary, .btn-secondary {
    display: inline-block;
    padding: 15px 30px;
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background-color: #0099e6; /* Un poco más oscuro */
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 194, 255, 0.3);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-light);
    border-color: var(--text-light);
}

.btn-secondary:hover {
    background-color: rgba(255,255,255,0.1);
    border-color: var(--secondary-color);
    color: var(--secondary-color);
    transform: translateY(-2px);
}

/* --- Secciones de Contenido (¿Qué es Smart Marketing?) --- */
#que-es p, #problemas-resolvemos p, #tecnologia p {
    font-size: 1.1em;
    max-width: 900px;
    margin: 0 auto 40px auto;
    text-align: center;
    color: var(--text-grey);
}
#tecnologia p {
    margin-bottom: 20px;
}

.features-grid, .problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-unit);
    margin-top: 40px;
    text-align: center;
}

.feature-item, .problem-item {
    background-color: #ffffff;
    padding: var(--spacing-unit);
    border-radius: var(--border-radius-md);
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-item:hover, .problem-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.feature-item .icon, .tech-list .icon {
    font-size: 2.5em;
    color: var(--primary-color);
    display: block;
    margin-bottom: 15px;
}

.feature-item p {
    font-size: 0.95em;
    color: var(--text-grey);
    margin: 0;
}

/* --- Lista de Tecnología --- */
.tech-list {
    max-width: 900px;
    margin: 40px auto 0 auto;
    text-align: left;
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.tech-list li {
    background-color: #ffffff;
    padding: 20px 25px;
    border-left: 5px solid var(--primary-color);
    border-radius: var(--border-radius-sm);
    box-shadow: 0 2px 10px rgba(0,0,0,0.04);
    font-size: 1.1em;
    color: var(--text-dark);
}

.tech-list li strong {
    color: var(--primary-color);
}

.tech-list li .icon {
    font-size: 1.5em;
    vertical-align: middle;
    margin-right: 10px;
    color: var(--primary-color);
}


/* --- Formulario de Contacto --- */
.contact-form {
    max-width: 600px;
    margin: 40px auto 0 auto;
    background-color: rgba(255,255,255,0.1);
    padding: var(--spacing-unit) 30px;
    border-radius: var(--border-radius-md);
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
}

.form-group {
    margin-bottom: var(--spacing-unit);
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 1.1em;
}

.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: var(--border-radius-sm);
    background-color: rgba(255,255,255,0.08);
    color: var(--text-light);
    font-size: 1em;
    transition: border-color 0.3s ease, background-color 0.3s ease;
}

.contact-form input[type="text"]::placeholder,
.contact-form input[type="email"]::placeholder,
.contact-form textarea::placeholder {
    color: rgba(255,255,255,0.6);
}

.contact-form input[type="text"]:focus,
.contact-form input[type="email"]:focus,
.contact-form textarea:focus {
    border-color: var(--secondary-color);
    background-color: rgba(255,255,255,0.15);
    outline: none;
}

.contact-form button[type="submit"] {
    width: 100%;
    background-color: var(--secondary-color);
    color: var(--dark-bg);
    padding: 15px var(--spacing-unit);
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 1.2em;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.contact-form button[type="submit"]:hover {
    background-color: #0099e6;
    transform: translateY(-2px);
}

.form-message {
    text-align: center;
    margin-top: var(--spacing-unit);
    font-weight: 600;
}
.form-message.success {
    color: #4CAF50; /* Verde para éxito */
}
.form-message.error {
    color: #f44336; /* Rojo para error */
}


/* --- Footer --- */
footer {
    background-color: #1a1a1a;
    color: rgba(255,255,255,0.7);
    padding: var(--spacing-unit) 0;
    text-align: center;
    font-size: 0.9em;
}

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

.social-links a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    margin: 0 10px;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: var(--secondary-color);
}


/* --- Responsive Design --- */
@media (max-width: 768px) {
    .nav-links {
        display: none; /* Podríamos implementar un menú hamburguesa aquí en el futuro */
    }

    header .container {
        justify-content: center; /* Centrar el logo si no hay nav links */
    }

    .hero h1 {
        font-size: 2.8em;
    }

    .hero .subtitle {
        font-size: 1.2em;
    }

    .cta-group {
        flex-direction: column;
        gap: 15px;
    }

    .section-padded {
        padding: 60px 0;
    }

    .section-padded h2 {
        font-size: 2em;
    }

    .features-grid, .problems-grid {
        grid-template-columns: 1fr; /* Una columna en móviles */
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2.2em;
    }
    .hero .subtitle {
        font-size: 1em;
    }
    .btn-primary, .btn-secondary {
        padding: 12px 20px;
        font-size: 0.9em;
    }
}