/* ==========================================================================
   1. CONFIGURACIÓN GLOBAL Y VARIABLES
   ========================================================================== */
:root {
    --bg-dark: #07090E;
    --card-bg: #11151C;
    --text-primary: #F8F9FA;
    --text-secondary: #9BA4B5;
    --accent-yellow: #FACC15; /* Amarillo/Dorado Corporativo */
    --accent-hover: #EAB308;
    --border-color: #2A303C;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    position: relative;
    overflow-x: hidden;
}

/* ==========================================================================
   2. EFECTOS DE FONDO (Sin imágenes - Texturas avanzadas)
   ========================================================================== */
.bg-grid {
    position: fixed;
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 30px 30px;
    z-index: -2;
}

.bg-glow {
    position: fixed;
    top: -20%; 
    left: 50%;
    width: 600px; 
    height: 600px;
    background: radial-gradient(circle, rgba(250, 204, 21, 0.15) 0%, rgba(7, 9, 14, 0) 70%);
    transform: translateX(-50%);
    z-index: -1;
    border-radius: 50%;
}

/* ==========================================================================
   3. CLASES DE UTILIDAD
   ========================================================================== */
.text-gradient {
    background: linear-gradient(90deg, #FFFFFF, var(--accent-yellow));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.text-yellow { 
    color: var(--accent-yellow) !important; 
}

/* ==========================================================================
   4. NAVEGACIÓN (Navbar)
   ========================================================================== */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 5%;
    background-color: rgba(7, 9, 14, 0.85);
    backdrop-filter: blur(12px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.logo a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: 1px;
}

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

.nav-links { 
    display: flex; 
    gap: 2rem; 
    align-items: center; 
}

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

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

.btn-outline {
    border: 1px solid var(--accent-yellow);
    color: var(--accent-yellow) !important;
    padding: 0.5rem 1.2rem;
    border-radius: 8px;
    transition: all 0.3s ease !important;
}

.btn-outline:hover {
    background-color: var(--accent-yellow);
    color: var(--bg-dark) !important;
    box-shadow: 0 0 15px rgba(250, 204, 21, 0.3);
}

.hamburger { 
    display: none; 
    flex-direction: column; 
    cursor: pointer; 
    gap: 5px; 
}

.hamburger span { 
    width: 25px; 
    height: 3px; 
    background-color: var(--text-primary); 
    border-radius: 2px; 
}

/* ==========================================================================
   5. BOTONES GENERALES E ICONOS DE BOTÓN
   ========================================================================== */
.btn-primary, .btn-secondary, .btn-card {
    display: inline-block;
    padding: 0.9rem 1.8rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    text-align: center;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--accent-yellow);
    color: var(--bg-dark);
    border: 1px solid var(--accent-yellow);
    box-shadow: 0 4px 15px rgba(250, 204, 21, 0.2);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(250, 204, 21, 0.4);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--accent-yellow);
    color: var(--accent-yellow);
    transform: translateY(-3px);
}

.contact-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px; /* Separación entre el icono SVG y el texto */
}

.btn-icon {
    width: 18px;
    height: 18px;
    display: inline-block;
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.contact-btn:hover .btn-icon {
    transform: scale(1.1);
}

/* ==========================================================================
   6. SECCIÓN HERO (Inicio)
   ========================================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 5%;
    text-align: center;
}

.hero-content {
    max-width: 850px;
    z-index: 1;
}

.badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: rgba(250, 204, 21, 0.1);
    color: var(--accent-yellow);
    border: 1px solid rgba(250, 204, 21, 0.2);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    line-height: 1.1;
    margin-bottom: 1.5rem;
    font-weight: 800;
}

.hero p {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
}

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

/* ==========================================================================
   7. SECCIÓN SERVICIOS (Grid y Tarjetas)
   ========================================================================== */
section { 
    padding: 120px 5%; 
}

.section-title { 
    text-align: center; 
    margin-bottom: 4rem; 
}

.section-title h2 { 
    font-size: 2.5rem; 
    margin-bottom: 1rem; 
    font-weight: 700; 
}

.section-title p { 
    color: var(--text-secondary); 
    font-size: 1.1rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.service-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: rgba(250, 204, 21, 0.4);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.card-icon {
    width: 32px;
    height: 32px;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    transition: color 0.4s ease, transform 0.4s ease;
}

.card-icon svg {
    width: 100%;
    height: 100%;
    display: block;
}

.service-card:hover .card-icon {
    color: var(--accent-yellow);
    transform: translateY(-2px);
}

.service-card h3 { 
    font-size: 1.5rem; 
    margin-bottom: 0.3rem;
}

.service-card .subtitle { 
    color: var(--text-secondary); 
    font-size: 0.9rem; 
    margin-bottom: 1.5rem; 
    font-weight: 600; 
}

.service-card .desc { 
    color: var(--text-secondary); 
    margin-bottom: 2rem; 
    flex-grow: 1; 
}

.service-card.highlight {
    border-color: var(--accent-yellow);
    background: linear-gradient(145deg, var(--card-bg) 0%, rgba(250, 204, 21, 0.05) 100%);
}

.highlight-badge {
    position: absolute;
    top: 20px; 
    right: -30px;
    background: var(--accent-yellow);
    color: var(--bg-dark);
    padding: 5px 30px;
    font-size: 0.75rem;
    font-weight: bold;
    transform: rotate(45deg);
}

.btn-card {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 100%;
}

.btn-card:hover { 
    border-color: var(--accent-yellow); 
    color: var(--accent-yellow); 
}

.highlight-btn { 
    background: var(--accent-yellow); 
    color: var(--bg-dark); 
    border-color: var(--accent-yellow); 
}

.highlight-btn:hover { 
    background: var(--accent-hover); 
    color: var(--bg-dark); 
}

/* ==========================================================================
   8. SECCIÓN EL ENFOQUE (Metodología)
   ========================================================================== */
.approach {
    background-color: #0a0d14; 
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.approach .container {
    max-width: 1200px;
    margin: 0 auto;
}

.approach-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
    margin-top: 2rem;
}

.approach-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 3rem 2.5rem;
    border-radius: 16px;
    position: relative;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    overflow: hidden;
}

/* Línea amarilla expansiva a la izquierda */
.approach-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 0;
    background-color: var(--accent-yellow);
    transition: height 0.4s ease;
}

.approach-card:hover {
    transform: translateY(-6px);
    border-color: rgba(250, 204, 21, 0.25);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.6);
}

.approach-card:hover::before {
    height: 100%;
}

.approach-number {
    font-size: 3.5rem;
    font-weight: 900;
    color: rgba(250, 204, 21, 0.03);
    position: absolute;
    top: 1.5rem;
    right: 2rem;
    user-select: none;
    transition: color 0.4s ease, transform 0.4s ease;
}

.approach-card:hover .approach-number {
    color: rgba(250, 204, 21, 0.12);
    transform: scale(1.05);
}

.approach-icon {
    width: 28px;
    height: 28px;
    color: var(--text-secondary);
    margin-bottom: 1.2rem;
    transition: color 0.3s ease;
}

.approach-icon svg {
    width: 100%;
    height: 100%;
    display: block;
}

.approach-card:hover .approach-icon {
    color: var(--accent-yellow);
}

.approach-card h3 {
    font-size: 1.35rem;
    margin-bottom: 1.2rem;
    font-weight: 700;
    letter-spacing: -0.3px;
    color: var(--text-primary);
    transition: color 0.3s ease;
}

.approach-card:hover h3 {
    color: var(--accent-yellow);
}

.approach-card p {
    color: var(--text-secondary);
    font-size: 0.98rem;
    line-height: 1.7;
}

/* ==========================================================================
   9. SECCIÓN CONTACTO
   ========================================================================== */
.contact { 
    text-align: center; 
}

.contact-box {
    max-width: 800px;
    margin: 0 auto;
    padding: 4rem 3rem;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    position: relative;
    overflow: hidden;
}

.contact-box::before {
    content: '';
    position: absolute;
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 4px;
    background: var(--accent-yellow);
}

.contact-box h2 { 
    font-size: 2.2rem; 
    margin-bottom: 1rem; 
}

.contact-box p { 
    color: var(--text-secondary); 
    margin-bottom: 2.5rem; 
    font-size: 1.1rem;
}

.contact-methods { 
    display: flex; 
    gap: 1.5rem; 
    justify-content: center; 
    flex-wrap: wrap; 
}

.contact-btn { 
    min-width: 250px; 
}

/* ==========================================================================
   10. PIE DE PÁGINA (Footer)
   ========================================================================== */
footer {
    text-align: center;
    padding: 2.5rem 5%;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.95rem;
    background: var(--bg-dark);
}

/* ==========================================================================
   11. ANIMACIONES Y CLASES DINÁMICAS (Por JS)
   ========================================================================== */
.fade-in {
    animation: fadeInUp 1s ease-out forwards;
}

.fade-in-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   12. RESPONSIVE DESIGN (Media Queries)
   ========================================================================== */
@media (max-width: 768px) {
    .hamburger { 
        display: flex; 
    }

    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%; 
        left: 0; 
        width: 100%;
        background-color: var(--card-bg);
        border-bottom: 1px solid var(--border-color);
        padding: 1.5rem 0;
    }

    .nav-links.active { 
        display: flex; 
    }

    .hero h1 { 
        font-size: 2.2rem; 
    }

    .contact-box { 
        padding: 3rem 1.5rem; 
    }
}