/* ==========================================================================
   NAILA - Design System & Base Styles
   ========================================================================== */

:root {
    /* Colors */
    --naila-void:       #080B14; 
    --naila-purple-light: #312b6b; /* Morado oscurecido */
    --naila-purple-mid:   #262152; /* Morado oscurecido */
    --naila-purple-deep:  #1a1738; /* Morado oscurecido */
    --naila-surface:    rgba(255, 255, 255, 0.05);
    --naila-border:     rgba(255, 255, 255, 0.1);
    --naila-violet:     #7C3AED;
    --naila-purple:     #6D28D9;
    --naila-iris:       #8B5CF6;
    --naila-aurora:     #A78BFA;
    --naila-blue-deep:  #1E3A8A;
    --naila-blue-mid:   #3B82F6;
    --naila-white:      #FFFFFF;
    --naila-gray-1:     #F8FAFC; 
    --naila-gray-2:     #CBD5E1;
    
    /* Gradients */
    --grad-hero: linear-gradient(135deg, #080B14 0%, #1a0533 100%);
    --grad-cta: linear-gradient(135deg, #7C3AED, #3B82F6);
    --grad-text: linear-gradient(135deg, #FFFFFF, #CBD5E1);

    /* Typography */
    --font-heading: 'Inter', sans-serif;
    --font-body: 'DM Sans', sans-serif;
}

/* Base Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--naila-void);
    color: var(--naila-gray-1);
    font-family: var(--font-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden !important; /* Forzado agresivo */
    width: 100% !important;
    position: relative;
}

img {
    max-width: 100%;
    height: auto;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--naila-white);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    letter-spacing: -0.01em;
    background: var(--grad-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.1;
}

.tagline {
    font-size: 1.25rem;
    color: var(--naila-gray-1);
    margin-bottom: 2rem;
}

a {
    color: var(--naila-aurora);
    text-decoration: none;
    transition: color 0.3s ease;
    position: relative;
}

/* Underline animado solo para links en párrafos/texto normal, excluyendo botones/cards */
p a::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 1px;
    bottom: -2px;
    left: 0;
    background-color: var(--naila-iris);
    visibility: hidden;
    transform: scaleX(0);
    transition: all 0.3s ease-in-out;
}

p a:hover::after {
    visibility: visible;
    transform: scaleX(1);
}

a:hover {
    color: var(--naila-iris);
}

/* Layout */
.container {
    width: 100% !important;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    box-sizing: border-box !important;
}

.section {
    padding: 6rem 0;
    width: 100% !important;
    overflow: hidden !important;
    box-sizing: border-box !important;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

/* Responsive Grids para móviles pequeños */
@media (max-width: 480px) {
    .grid-3, .grid-2 {
        grid-template-columns: 1fr;
    }
    .card, .case-card, .solution-item {
        padding: 1.5rem;
    }
    .section {
        padding: 4rem 0;
    }
}

/* Components */
.btn {
    display: inline-block;
    padding: 0.875rem 1.5rem;
    border-radius: 8px;
    font-family: var(--font-heading);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    text-align: center;
}

.btn-primary {
    background: var(--grad-cta);
    color: var(--naila-white);
    box-shadow: 0 4px 14px rgba(124, 58, 237, 0.25);
    position: relative;
    z-index: 1;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    border-radius: inherit;
    background: var(--grad-cta);
    z-index: -1;
    filter: blur(12px);
    opacity: 0;
    transition: opacity 0.4s ease;
}

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

.btn-primary:hover::before {
    opacity: 0.6;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.03);
    color: var(--naila-white);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
}

.w-full {
    width: 100%;
}

/* Cards Generales (Oscuras) */
/* Tarjetas Generales */
.card, .case-card, .solution-item {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 2rem;
    width: 100% !important; /* Forzar ancho completo */
    max-width: 100% !important;
    box-sizing: border-box !important;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), 
                border-color 0.4s ease, 
                box-shadow 0.4s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.card:hover, .case-card:hover, .solution-item:hover {
    transform: translateY(-4px);
    border-color: rgba(124, 58, 237, 0.3);
    box-shadow: 0 12px 30px rgba(124, 58, 237, 0.08);
}

.case-card {
    display: block;
    text-decoration: none;
}

.case-card p {
    color: var(--naila-gray-1);
    line-height: 1.6;
}

.case-card p {
    color: #64748B; /* Gris oscuro legible */
    line-height: 1.6;
}

.case-logo {
    margin-bottom: 1.5rem;
}

.case-vertical {
    font-size: 0.8rem;
    color: var(--naila-aurora);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 600;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--naila-gray-1);
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    background: rgba(19, 23, 41, 0.5);
    border: 1px solid var(--naila-border);
    border-radius: 10px;
    color: var(--naila-white);
    font-family: var(--font-body);
    transition: all 0.3s ease;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--naila-iris);
    background: rgba(19, 23, 41, 0.8);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
}

.hidden-field {
    display: none !important;
}

/* Sections */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--grad-hero);
    position: relative;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    text-align: center;
}

.badge {
    display: inline-block;
    padding: 0.25rem 1rem;
    background: rgba(124, 58, 237, 0.1);
    border: 1px solid rgba(124, 58, 237, 0.3);
    color: var(--naila-aurora);
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.hero-logo-top img {
    height: 60px !important;
    width: auto !important;
    max-width: 80% !important;
    margin-bottom: 2rem;
    filter: drop-shadow(0 0 15px rgba(124, 58, 237, 0.4));
    transition: transform 0.3s ease;
}

.hero-logo-top img:hover {
    transform: scale(1.02);
}

.footer .logo {
    height: 35px !important;
    width: auto !important;
    max-width: 150px !important;
    margin-bottom: 1rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Secciones por tonos de morado */
#que-es { background-color: var(--naila-purple-light); } /* Sin borde inferior */
#soluciones { background-color: var(--naila-purple-light); border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
#casos { background-color: var(--naila-purple-mid); border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
#capacidades { background-color: var(--naila-purple-deep); border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
#como-funciona { background-color: var(--naila-purple-light); } /* Sin borde inferior */
#demo { background-color: var(--naila-purple-light); border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
#empresas, #contacto { background-color: var(--naila-purple-deep); }

.footer {
    background-color: #080B14;
    border-top: 1px solid var(--naila-border);
    padding: 3rem 0;
    margin-top: 0;
}

.footer-grid {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.brand .logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--naila-white);
    letter-spacing: 2px;
}

.links {
    display: flex;
    gap: 2rem;
}

.copyright {
    text-align: center;
    color: var(--naila-gray-2);
    font-size: 0.875rem;
}

/* Mobile Sticky CTA */
.mobile-sticky-cta {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 1rem 1.5rem 1.5rem 1.5rem;
    background: linear-gradient(to top, rgba(8,11,20,1) 60%, rgba(8,11,20,0) 100%);
    z-index: 900;
    text-align: center;
    pointer-events: none;
}

.mobile-sticky-cta .btn {
    pointer-events: auto;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.8);
}

/* Responsiveness */
@media (max-width: 768px) {
    .hero-actions {
        flex-direction: column;
    }
    .footer-grid {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
    .mobile-sticky-cta {
        display: block;
    }
    .footer {
        padding-bottom: 6rem; /* Espacio para el CTA sticky */
    }
}