/* Variables Globales */
:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --bg-dark: #0f172a;
    --card-bg: #1e293b;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --radius: 12px;
    --transition: all 0.3s ease;
}

/* Base y Fondo */
body {
    background-color: var(--bg-dark) !important;
    color: var(--text-main) !important;
    font-family: 'Inter', system-ui, -apple-system, sans-serif !important;
}

/* Header / Navegación */
header, .navbar {
    background: rgba(15, 23, 42, 0.8) !important;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding: 1rem 0 !important;
}

.navbar-brand, .nav-link {
    color: var(--text-main) !important;
    font-weight: 600;
}

/* Botones Modernos con Alto Contraste */
.btn, button {
    /* --- Tus bases originales --- */
    border-radius: var(--radius) !important;
    padding: 10px 24px !important;
    font-weight: 600 !important; /* Subido a 600 para mejorar legibilidad */
    transition: var(--transition) !important;
    text-transform: none !important;

    /* --- Optimización de Contraste --- */
    background-color: #000000 !important; /* Fondo negro puro */
    color: #ffffff !important;           /* Texto blanco puro */
    border: 1px solid #000000 !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    cursor: pointer !important;
    
    /* Suavizado de fuente para que el blanco no "brille" de más */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Efecto Hover para mantener la interactividad moderna */
.btn:hover, button:hover {
    background-color: #333333 !important; /* Gris oscuro al pasar el cursor */
    border-color: #333333 !important;
    color: #ffffff !important;
    transform: translateY(-1px); /* Efecto sutil de elevación */
}

.btn-primary {
    background-color: var(--primary) !important;
    border: none !important;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

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

/* Cards y Contenedores */
.card, .service-box, .feature-box {
    background: var(--card-bg) !important;
    border: 1px solid rgba(255,255,255,0.05) !important;
    border-radius: var(--radius) !important;
    padding: 2rem !important;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
    border-color: var(--primary) !important;
}

/* Inputs y Formularios */
input, select, textarea {
    background: #334155 !important;
    border: 1px solid #475569 !important;
    color: white !important;
    border-radius: 8px !important;
    padding: 12px !important;
}

input:focus {
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2) !important;
}

/* Secciones de Texto */
h1, h2, h3 {    color: #ffffff !important;
    font-weight: 800 !important;
    letter-spacing: -0.025em;
}

p {
    color: var(--text-muted) !important;
    line-height: 1.6;
}

/* Footer */
footer {
    background: #020617 !important;
    padding: 4rem 0 !important;
    border-top: 1px solid rgba(255,255,255,0.05);
}

/* Media Queries (Responsivo) */
@media (max-width: 768px) {
    .container {
        padding-left: 20px;
        padding-right: 20px;
    }
    
    h1 {
        font-size: 2.2rem !important;
    }
    
    .btn {
        width: 100%;
        margin-bottom: 10px;
    }
}

/* Animación de entrada */@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

main, section {
    animation: fadeIn 0.6s ease-out;
}