/* RESET ESTÁNDAR */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-family: 'Inter', sans-serif;
    color: #333333;
    background-color: #ffffff;
}

body {
    line-height: 1.6;
}

/* VARIABLES DE DISEÑO */
:root {
    --primary-color: #0056D2;      /* Azul corporativo moderno */
    --primary-hover: #0041a3;
    --dark-color: #111827;         /* Gris casi negro para títulos */
    --light-bg: #F9FAFB;           /* Fondo gris muy claro para contraste */
    --text-muted: #6B7280;         /* Gris para textos secundarios */
    --border-color: #E5E7EB;
}

/* COMPONENTES REUTILIZABLES */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 6px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    font-size: 0.95rem;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #ffffff;
    border: none;
}

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

.btn-secondary {
    background-color: transparent;
    color: #ffffff;
    border: 2px solid #ffffff;
}

.btn-secondary:hover {
    background-color: #ffffff;
    color: var(--dark-color);
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2.2rem;
    color: var(--dark-color);
    margin-bottom: 15px;
    font-weight: 700;
}

.section-title p {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* CABECERA (STICKY HEADER) */
.header {
    background-color: #ffffff;
    border-bottom: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.02);
}

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

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

.logo span {
    color: var(--primary-color);
}

.nav a {
    color: #4B5563;
    text-decoration: none;
    margin: 0 15px;
    font-weight: 500;
    transition: color 0.2s;
}

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

/* SECCIÓN HERO */
.hero {
    background: linear-gradient(135deg, rgba(17, 24, 39, 0.9), rgba(0, 86, 210, 0.8)), 
                url('https://images.unsplash.com/photo-1558494949-ef010cbdcc31?q=80&w=1920') no-repeat center center/cover;
    min-height: 90vh;
    display: flex;
    align-items: center;
    color: #ffffff;
    padding-top: 80px; /* Evita que la cabecera tape el contenido */
}

.hero-content {
    max-width: 700px;
}

.hero h1 {
    font-size: 3rem;
    line-height: 1.2;
    font-weight: 700;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 35px;
}

.hero-actions .btn {
    margin-right: 15px;
    margin-bottom: 10px;
}

/* SECCIÓN SERVICIOS */
.services {
    padding: 100px 0;
    background-color: #ffffff;
}

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

.card {
    background-color: var(--light-bg);
    border: 1px solid var(--border-color);
    padding: 40px 30px;
    border-radius: 8px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.card h3 {
    font-size: 1.3rem;
    color: var(--dark-color);
    margin-bottom: 15px;
    font-weight: 600;
}

.card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* SECCIÓN ALTER ERP */
.erp-section {
    padding: 100px 0;
    background-color: var(--light-bg);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.erp-container {
    display: flex;
    align-items: center;
    gap: 60px;
    flex-wrap: wrap;
}

.erp-image, .erp-content {
    flex: 1;
    min-width: 300px;
}

.image-placeholder {
    background-color: #E5E7EB;
    border: 2px dashed #9CA3AF;
    height: 350px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    color: var(--text-muted);
    font-weight: 500;
}

.badge {
    display: inline-block;
    background-color: rgba(0, 86, 210, 0.1);
    color: var(--primary-color);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 15px;
}

.erp-content h2 {
    font-size: 2.2rem;
    color: var(--dark-color);
    margin-bottom: 20px;
    font-weight: 700;
}

.erp-content p {
    color: var(--text-muted);
    margin-bottom: 25px;
}
.image-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* O 'contain' dependiendo de lo que busques (ver abajo) */
    display: block;    /* Elimina un pequeño espacio en blanco que los elementos inline dejan abajo */
}


.erp-list {
    list-style: none;
    margin-bottom: 35px;
}

.erp-list li {
    margin-bottom: 12px;
    position: relative;
    padding-left: 25px;
}

.erp-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* SECCIÓN CONTACTO */
.contact {
    padding: 100px 0;
}

.contact-container {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--light-bg);
    padding: 40px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--dark-color);
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.contact-form .btn {
    width: 100%;
}

/* PIE DE PÁGINA */
.footer {
    background-color: var(--dark-color);
    color: #9CA3AF;
    padding: 40px 0;
    font-size: 0.9rem;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-links a {
    color: #9CA3AF;
    text-decoration: none;
    margin-left: 20px;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: #ffffff;
}

/* RESPONSIVO (PROPORCIONES PARA MÓVILES) */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        height: auto;
        padding: 15px 20px;
        gap: 15px;
    }
    .nav {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }
    .nav a {
        margin: 0 5px;
    }
    .nav-btn {
        display: none; /* Escondemos el botón de cabecera en móviles pequeños para ahorrar espacio */
    }
    .hero h1 {
        font-size: 2.2rem;
    }
    .erp-container {
        flex-direction: column;
    }
    .footer-container {
        flex-direction: column;
        text-align: center;
    }
    .footer-links a {
        margin: 0 10px;
    }
}