/* =========================================
   VARIABLES GLOBALES DE COLOR Y DISEÑO
========================================= */
:root {
    --bg-main: #0b1120;       /* Pizarra oscuro (Fondo principal) */
    --bg-card: #1e293b;       /* Pizarra más claro (Tarjetas) */
    --text-main: #f8fafc;     /* Blanco humo (Textos principales) */
    --text-muted: #94a3b8;    /* Gris azulado (Textos secundarios) */
    --accent: #2563eb;        /* Azul corporativo técnico */
    --accent-hover: #1d4ed8;  /* Azul oscuro para interacciones */
    --border-color: #334155;  /* Líneas divisorias sutiles */
}

/* =========================================
   RESETEO Y TIPOGRAFÍA BASE
========================================= */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
}

/* =========================================
   CABECERA Y NAVEGACIÓN
========================================= */
header {
    background-color: rgba(11, 17, 32, 0.95);
    backdrop-filter: blur(5px);
    padding: 1.2rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo h1 {
    font-size: 1.5rem;
    color: var(--text-main);
    letter-spacing: 0.5px;
}

.logo .subtitle {
    font-size: 0.8rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 1.2px;
    font-weight: 600;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 2rem;
}

nav a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

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

/* =========================================
   SECCIONES GENERALES
========================================= */
section {
    padding: 5rem 5%;
}

h2 {
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
    color: var(--text-main);
    border-bottom: 3px solid var(--accent);
    padding-bottom: 0.5rem;
    display: inline-block;
}

p {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 800px;
}

/* =========================================
   SECCIÓN HERO (INICIO)
========================================= */
.hero {
    text-align: center;
    padding: 8rem 5%;
    background: linear-gradient(180deg, #0f172a 0%, #0b1120 100%);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero h2 {
    border: none;
    font-size: 3rem;
    margin-bottom: 1.5rem;
    max-width: 900px;
    line-height: 1.2;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
}

.btn-primary {
    background-color: var(--accent);
    color: #fff;
    padding: 1rem 2.5rem;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
}

/* =========================================
   TARJETAS DEL ECOSISTEMA
========================================= */
.grid-aliados {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.aliado-card {
    background-color: var(--bg-card);
    padding: 2.5rem 2rem;
    border-radius: 8px;
    border-top: 4px solid var(--accent);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.aliado-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.2);
}

.aliado-card h3 {
    font-size: 1.4rem;
    color: var(--text-main);
    margin-bottom: 1rem;
}

.aliado-card p {
    font-size: 1rem;
    margin-bottom: 0;
}

/* =========================================
   SECCIÓN DE CONTACTO Y FORMULARIO
========================================= */
.contacto-section {
    background-color: var(--bg-card); /* Diferenciador visual */
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    text-align: center;
}

.contacto-section p {
    margin: 0 auto 2rem auto;
}

.formulario-container {
    max-width: 700px;
    margin: 0 auto;
    background-color: var(--bg-main);
    padding: 2.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    text-align: left;
}

.contacto-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.95rem;
    color: var(--text-main);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.85rem;
    background-color: rgba(15, 23, 42, 0.6); /* Fondo sutil oscuro */
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-main);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #475569;
}

.btn-submit {
    width: 100%;
    margin-top: 1rem;
    border: none;
    cursor: pointer;
}

/* =========================================
   PIE DE PÁGINA
========================================= */
/* ... (resto del css del footer) ... */