/* Reset y estilos base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-light);
    color: var(--color-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Contenedor principal */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    width: 100%;
}

/* ===== NAVBAR ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    transition: var(--transition-medium);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    padding: var(--spacing-sm) 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.nav-logo img {
    height: 40px;
    width: auto;
    transition: var(--transition-fast);
}

.nav-logo:hover img {
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-link {
    font-family: var(--font-secondary);
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--color-secondary);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
    padding: var(--spacing-xs) 0;
    transition: var(--transition-fast);
}

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

.nav-link.active {
    color: var(--color-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-1);
    transition: var(--transition-medium);
}

.nav-link.active::after,
.nav-link:hover::after {
    width: 100%;
}

.nav-indicator {
    position: absolute;
    bottom: -12px;
    height: 2px;
    background-color: var(--accent-1);
    transition: var(--transition-medium);
    border-radius: var(--border-radius-sm);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    flex-direction: column;
    gap: 4px;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-primary);
    transition: var(--transition-medium);
}

/* ===== SECCIONES ===== */
.sections-container {
    margin-top: 60px; /* Para compensar el navbar fijo */
}

.section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
    transition: background-color var(--transition-slow);
}

.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

/* Colores de fondo por sección */
.hero {
    background-color: var(--bg-hero);
}

#que-hacemos {
    background-color: var(--bg-what);
}

#metodologia {
    background-color: var(--bg-method);
}

#proyectos {
    background-color: var(--bg-projects);
}

#contacto {
    background-color: var(--bg-contact);
}

/* ===== HERO SECTION ===== */
.hero .container {
    text-align: center;
    padding-top: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
}

.hero .logo {
    margin-bottom: var(--spacing-lg);
    width: 150px;
    height: 150px;
    margin: 0 auto var(--spacing-lg);
}

.hero .logo img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.hero h1 {
    font-family: var(--font-secondary);
    font-size: 3.5rem;
    font-weight: 300;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.5px;
}

.hero h2 {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    color: var(--color-secondary);
    line-height: 1.4;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-secondary);
    font-size: 0.9rem;
    animation: bounce 2s infinite;
}

.scroll-indicator i {
    font-size: 1.2rem;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) translateX(-50%);
    }
    40% {
        transform: translateY(-10px) translateX(-50%);
    }
    60% {
        transform: translateY(-5px) translateX(-50%);
    }
}

/* ===== SECCIONES DE TARJETAS ===== */
.card-section {
    padding: var(--spacing-xl) 0;
}

.section-number {
    position: absolute;
    top: var(--spacing-lg);
    left: var(--spacing-lg);
    font-family: var(--font-mono);
    font-size: 5rem;
    font-weight: 300;
    color: rgba(0, 0, 0, 0.05);
    z-index: 0;
    pointer-events: none;
}

.card-section .container {
    position: relative;
    z-index: 1;
    max-width: 1000px;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.card-section h2 {
    font-family: var(--font-secondary);
    font-size: 2.5rem;
    font-weight: 400;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.section-subtitle {
    font-family: var(--font-primary);
    font-size: 1.1rem;
    color: var(--color-secondary);
    font-weight: 300;
}

.section-description {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-secondary);
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
    text-align: center;
}

/* ===== GRID DE SERVICIOS ===== */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.service-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-card);
    transition: var(--transition-medium);
    text-align: center;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-medium);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    color: white;
    font-size: 1.5rem;
}

.service-card h3 {
    font-family: var(--font-secondary);
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.service-card p {
    color: var(--color-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ===== METODOLOGÍA ===== */
.methodology-steps {
    max-width: 800px;
    margin: 0 auto;
}

.step {
    display: flex;
    align-items: flex-start;
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.step::before {
    content: '';
    position: absolute;
    left: 25px;
    top: 50px;
    bottom: -30px;
    width: 2px;
    background-color: rgba(0, 0, 0, 0.1);
}

.step:last-child::before {
    display: none;
}

.step-number {
    font-family: var(--font-mono);
    font-size: 1.2rem;
    font-weight: 500;
    width: 50px;
    height: 50px;
    background-color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: var(--spacing-md);
    flex-shrink: 0;
    box-shadow: var(--shadow-light);
    z-index: 1;
    border: 2px solid var(--accent-2);
    color: var(--accent-2);
}

.step-content {
    flex: 1;
    padding-top: 8px;
}

.step-content h3 {
    font-family: var(--font-secondary);
    font-size: 1.3rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-primary);
}

.step-content p {
    color: var(--color-secondary);
    line-height: 1.6;
}

/* ===== PROYECTOS ===== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.project-card {
    background: white;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: var(--transition-medium);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.project-image {
    height: 200px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-placeholder {
    color: white;
    font-size: 3rem;
    opacity: 0.8;
}

.project-info {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-info h3 {
    font-family: var(--font-secondary);
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.project-info p {
    color: var(--color-secondary);
    margin-bottom: var(--spacing-md);
    flex: 1;
}

.project-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: rgba(69, 183, 209, 0.1);
    color: var(--accent-3);
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
}

/* ===== CONTACTO ===== */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--accent-2), var(--accent-3));
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-item h3 {
    font-family: var(--font-secondary);
    font-size: 1.1rem;
    margin-bottom: 4px;
    color: var(--color-primary);
}

.contact-item p {
    color: var(--color-secondary);
    line-height: 1.5;
}

.contact-form {
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-card);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--border-radius-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-1);
    box-shadow: 0 0 0 2px rgba(255, 107, 107, 0.1);
}

.btn-submit {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    color: white;
    border: none;
    border-radius: var(--border-radius-md);
    font-family: var(--font-secondary);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-medium);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

/* ===== FOOTER ===== */
footer {
    background-color: var(--color-primary);
    color: white;
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    text-align: center;
}

.footer-content {
    max-width: 600px;
    margin: 0 auto;
}

.footer-symbol {
    font-family: var(--font-mono);
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    color: rgba(255, 255, 255, 0.7);
    animation: pulse 4s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

footer p {
    margin-bottom: var(--spacing-md);
    color: rgba(255, 255, 255, 0.8);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    font-size: 1.2rem;
    transition: var(--transition-fast);
}

.social-links a:hover {
    background-color: var(--accent-1);
    transform: translateY(-3px);
}

/* ===== ANIMACIONES DE ENTRADA ===== */
.section-content {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.section.visible .section-content {
    opacity: 1;
    transform: translateY(0);
}

/* Retrasos escalonados para elementos hijos */
.section.visible .section-content > * {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
}

.section.visible .section-content > *:nth-child(1) { animation-delay: 0.1s; }
.section.visible .section-content > *:nth-child(2) { animation-delay: 0.2s; }
.section.visible .section-content > *:nth-child(3) { animation-delay: 0.3s; }
.section.visible .section-content > *:nth-child(4) { animation-delay: 0.4s; }

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

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 3rem;
    }
    
    .hero h2 {
        font-size: 1.3rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: var(--spacing-xs) 0;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background-color: white;
        flex-direction: column;
        padding: var(--spacing-md);
        gap: 0;
        box-shadow: var(--shadow-medium);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-medium);
        z-index: 999;
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-menu li {
        width: 100%;
    }
    
    .nav-link {
        display: block;
        padding: var(--spacing-sm) 0;
        border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    }
    
    .nav-link:last-child {
        border-bottom: none;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero h2 {
        font-size: 1.2rem;
        padding: 0 var(--spacing-sm);
    }
    
    .hero .logo {
        width: 120px;
        height: 120px;
    }
    
    .card-section h2 {
        font-size: 2rem;
    }
    
    .section-number {
        font-size: 3.5rem;
        top: var(--spacing-md);
        left: var(--spacing-md);
    }
    
    .cards-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .methodology-steps {
        padding-left: var(--spacing-sm);
    }
    
    .step::before {
        left: 20px;
    }
    
    .step-number {
        width: 40px;
        height: 40px;
        margin-right: var(--spacing-sm);
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .card-section h2 {
        font-size: 1.7rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* o 'contain' según prefieras */
    display: block;
}