/* ===== RESET DE CSS Y BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colores - Tema industrial */
    --color-white: #ffffff;   
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-600: #575757;
    --color-gray-700: #3b3b3b;
    --color-gray-800: #202020;
    --color-gray-900: #131313;
    --color-yellow: #c3590b;
    --color-yellow-dark: #c3590b;
    --color-yellow-hover: #e48200;
    
    /* Tipografía */
    --font-primary: 'Poppins', 'Open Sans', sans-serif;
    --font-secondary: 'Open Sans', sans-serif;
    
    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Transiciones */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===== NAVEGACIÓN ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: transparent;
    z-index: 1000;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background-color: var(--color-white);
    box-shadow: var(--shadow-md);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-img {
    height: 10vh;
    width: auto;
}

.logo-text {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.logo-company {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-white);
    line-height: 1;
    letter-spacing: 1.5px;
}

.navbar.scrolled .logo-company {
    color: var(--color-gray-900);
}

.logo-subtitle {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-yellow-dark);
    letter-spacing: 0.1em;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-link {
    color: var(--color-white);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--transition-fast);
    position: relative;
}

.navbar.scrolled .nav-link {
    color: var(--color-gray-700);
}

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

.navbar.scrolled .nav-link:hover {
    color: var(--color-yellow-dark);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-yellow);
    transition: width var(--transition-base);
}

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

.nav-toggle {
    display: none;
    font-size: 1.5rem;
    color: var(--color-white);
    cursor: pointer;
}

.navbar.scrolled .nav-toggle {
    color: var(--color-gray-900);
}

/* ===== SECCIÓN HERO ===== */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../img/hero-bg.png') center/cover no-repeat;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.6));
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    margin-top: 10vh;
    max-width: 900px;
    padding: 0 var(--spacing-md);
    color: var(--color-white);
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    font-weight: 300;
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
    opacity: 0.95;
    animation: fadeInUp 1s ease 0.2s backwards;
}

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

/* ===== BOTONES ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-primary);
}

.btn-primary {
    background-color: var(--color-yellow);
    color: var(--color-gray-900);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background-color: var(--color-yellow-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-hero {
    animation: fadeInUp 1.2s ease 0.4s backwards;
}

/* ===== SECCIONES ===== */
.section {
    padding: var(--spacing-3xl) 0;
}

.section-servicios {
    background-color: var(--color-white);
}

.section-proyectos {
    background-color: var(--color-gray-50);
}

.section-nosotros {
    background-color: var(--color-white);
}

.section-clientes {
    background-color: var(--color-gray-50);
}

.section-contacto {
    background-color: var(--color-white);
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--color-gray-900);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background-color: var(--color-yellow);
    margin: var(--spacing-md) auto 0;
}

/* ===== NOSOTROS ===== */
.nosotros-content {
    max-width: 900px;
    margin: 0 auto;
}

.nosotros-text {
    text-align: center;
}

.lead {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-md);
}

.nosotros-text p{
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.nosotros-text li{
    color: var(--color-gray-600);
    line-height: 1.8;
}

.nosotros-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    text-align: left;
    padding: var(--spacing-md);
    background-color: var(--color-white);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.feature-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    font-size: 2rem;
    color: var(--color-yellow-dark);
    flex-shrink: 0;
}

.feature-item h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.feature-item p {
    font-size: 0.95rem;
    color: var(--color-gray-600);
    margin: 0;
}

/* ===== GRID DE PRODUCTOS/SERVICIOS ===== */
.productos-grid,
.proyectos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.card {
    background-color: var(--color-white);
    border-radius: 12px;
    overflow: hidden;
}
    
/* ===== MARQUEE DE CLIENTES ===== */
.section-clientes .clientes-marquee {
    margin-top: 12px;
    overflow: hidden;
    position: relative;
    width: 100%;
    background: linear-gradient(90deg, rgba(255,255,255,0), rgba(255,255,255,0));
    padding: 18px 0;
}
.clientes-track {
    display: flex;
    gap: 28px;
    align-items: center;
    will-change: transform;
    animation: marqueeScroll 30s linear infinite;
}
.clientes-item {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6px 10px;
}
.clientes-item img {
    max-height: 48px;
    opacity: 0.95;
    filter: grayscale(0.05) contrast(0.95);
}

@keyframes marqueeScroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* Pause animation on reduced motion */
@media (prefers-reduced-motion: reduce) {
    .clientes-track { 
    animation: none; 
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    }
}

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

.card-slider {
    position: relative;
    width: 100%;
    height: 250px;
    overflow: hidden;
    background-color: var(--color-gray-100);
}

.slider-container {
    display: flex;
    transition: transform var(--transition-slow);
    height: 100%;
}

.slider-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    flex-shrink: 0;
}

.slider-nav {
    position: absolute;
    bottom: var(--spacing-sm);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--spacing-xs);
    z-index: 10;
}

.slider-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.slider-dot.active {
    background-color: var(--color-yellow);
    transform: scale(1.2);
}

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

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
}

.card-description {
    font-size: 0.95rem;
    color: var(--color-gray-600);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    flex: 1;
}

.card-button {
    align-self: flex-start;
    margin-top: auto;
}

/* ===== CONTACTO ===== */
.contacto-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    max-width: 1100px;
    margin: 0 auto;
}

.contact-form {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.contacto-form-wrapper{
    width: 92%;
}

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

.form-group-full {
    grid-column: 1 / -1;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-xs);
}

.form-group input,
.form-group textarea {
    padding: 0.75rem;
    border: 1px solid var(--color-gray-300);
    border-radius: 6px;
    font-size: 1rem;
    font-family: var(--font-secondary);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-yellow-dark);
    box-shadow: 0 0 0 3px rgba(251, 191, 36, 0.1);
}

.btn-submit {
    grid-column: 1 / -1;
    justify-self: start;
    margin-top: var(--spacing-sm);
}

.form-message {
    grid-column: 1 / -1;
    padding: var(--spacing-md);
    border-radius: 6px;
    margin-top: var(--spacing-md);
    display: none;
    animation: fadeInUp 0.3s ease;
}

.form-message.success {
    display: block;
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.form-message.error {
    display: block;
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

/* Error state for individual fields */
.form-group.error input,
.form-group.error textarea {
    border-color: #ef4444 !important;
    box-shadow: 0 0 0 4px rgba(239,68,68,0.06) !important;
}
.form-group.error label { color: #b91c1c !important; }

/* Error state for multi-choice fieldsets */
.multi-choice-group.error {
    outline: 2px solid rgba(239,68,68,0.08);
    border-radius: 8px;
    padding: 10px;
}
.multi-choice-group.error legend { color: #b91c1c; }

/* ===== TOAST / SNIPPET (top-right) ===== */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 11000; /* above loader */
    pointer-events: none; /* allow clicks through gaps */
}
.toast {
    min-width: 260px;
    max-width: 380px;
    background: #fff;
    color: var(--color-gray-900);
    border-radius: 10px;
    box-shadow: 0 8px 30px rgba(11,18,32,0.12);
    padding: 12px 14px;
    display: flex;
    gap: 12px;
    align-items: flex-start;
    border-left: 6px solid var(--color-yellow);
    font-family: var(--font-secondary);
    pointer-events: auto; /* allow click */
    cursor: pointer;
    transform: translateX(12px) translateY(-6px) scale(.98);
    opacity: 0;
}
.toast .icon {
    width: 36px;
    height: 36px;
    flex: 0 0 36px;
    display: inline-grid;
    place-items: center;
    border-radius: 8px;
    background: rgba(11,18,32,0.04);
}
.toast .content { flex: 1; }
.toast .title { font-weight:700; font-size:14px; margin-bottom:4px; }
.toast .body { font-size:13px; color:var(--color-gray-700); }

/* Types */
.toast--success { border-left-color: #10b981; }
.toast--error { border-left-color: #ef4444; }
.toast--info { border-left-color: var(--color-yellow); }

/* Animations */
@keyframes toast-in {
    from { transform: translateX(18px) translateY(-6px) scale(.96); opacity: 0; }
    to   { transform: translateX(0) translateY(0) scale(1); opacity: 1; }
}
@keyframes toast-out {
    from { transform: translateX(0) translateY(0) scale(1); opacity: 1; }
    to   { transform: translateX(12px) translateY(-8px) scale(.96); opacity: 0; }
}
.toast--enter { animation: toast-in 360ms cubic-bezier(.2,.9,.3,1) forwards; }
.toast--exit  { animation: toast-out 280ms cubic-bezier(.4,.0,.2,1) forwards; }

/* Respect prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  .toast, .toast--enter, .toast--exit { animation: none !important; transition: none !important; }
}

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

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

.info-item i {
    font-size: 1.5rem;
    color: var(--color-yellow-dark);
    margin-top: 4px;
}

.info-item h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.info-item p {
    font-size: 0.95rem;
    color: var(--color-gray-600);
    margin: 0;
}

/* ===== PIE DE PÁGINA ===== */
.footer {
    background-color: var(--color-gray-900);
    color: var(--color-gray-300);
    padding: var(--spacing-2xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
    color: var(--color-white);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.footer-section p {
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: var(--color-gray-300);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

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

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--color-gray-800);
    color: var(--color-gray-300);
    font-size: 1.2rem;
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background-color: var(--color-yellow);
    color: var(--color-gray-900);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-800);
}

.footer-bottom p {
    font-size: 0.85rem;
}

/* ===== BOTÓN FLOTANTE WHATSAPP ===== */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: #25D366;
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: var(--shadow-lg);
    z-index: 999;
    transition: all var(--transition-base);
    animation: pulse 2s infinite;
}

.whatsapp-float:hover {
    background-color: #128C7E;
    transform: scale(1.1);
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
    }
}

/* ===== RESPONSIVE (RESPONSIVO) ===== */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 16vh;
        left: -100%;
        flex-direction: column;
        background-color: var(--color-white);
        width: 100%;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transition: left var(--transition-base);
        align-items: flex-start;
        gap: var(--spacing-md);
    }
    
    .nav-menu.active {
        left: 0;
        top: 16vh;
    }
    
    .nav-menu .nav-link {
        color: var(--color-gray-700);
        width: 100%;
        padding: var(--spacing-sm) 0;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .hero-title {
        font-size: 2rem;
    }

    .logo-company {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-gray-900);
    line-height: 1;
    }

    .logo-img {
    height: 7vh;
    width: auto;
    }

    .logo-subtitle {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-yellow-dark);
    letter-spacing: 0.1em;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .nosotros-features {
        grid-template-columns: 1fr;
    }
    
    .productos-grid,
    .proyectos-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-form {
        grid-template-columns: 1fr;
    }
    
    .multi-choice-group {
        display: flex;
        flex-wrap: wrap;
    }
    .multi-choice-group .checkbox-wrapper-46 { margin-right: 18px; }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .whatsapp-float {
        width: 50px;
        height: 50px;
        bottom: 20px;
        right: 20px;
        font-size: 1.5rem;
    }
}

@media (max-width: 1100px) {
    .contacto-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .section {
        padding: var(--spacing-xl) 0;
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
}

/* Custom checkbox style adapted from Uiverse (checkbox-wrapper-46) */
.checkbox-wrapper-46 {
    display: inline-flex;
    align-items: center;
    margin-right: 12px;
}
.checkbox-wrapper-46 input[type="checkbox"] {
    display: none;
    visibility: hidden;
}
.checkbox-wrapper-46 .cbx {
    margin: 0;
    -webkit-user-select: none;
    user-select: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
}
.checkbox-wrapper-46 .cbx span { display: inline-block; vertical-align: middle; }
.checkbox-wrapper-46 .cbx span:first-child {
    position: relative;
    width: 20px;
    height: 20px;
    border-radius: 4px;
    transform: scale(1);
    vertical-align: middle;
    border: 1px solid var(--color-gray-300);
    transition: all 0.2s ease;
    background: transparent;
}
.checkbox-wrapper-46 .cbx span:first-child svg {
    position: absolute;
    top: 3px;
    left: 2px;
    fill: none;
    stroke: var(--color-white);
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-dasharray: 16px;
    stroke-dashoffset: 16px;
    transition: all 0.3s ease;
    transition-delay: 0.1s;
}
.checkbox-wrapper-46 .cbx span:first-child:before {
    content: "";
    width: 100%;
    height: 100%;
    background: var(--color-yellow);
    display: block;
    transform: scale(0);
    opacity: 1;
    border-radius: 50%;
}
.checkbox-wrapper-46 .cbx span:last-child { padding-left: 8px; color: var(--color-gray-700); font-weight:600; }
.checkbox-wrapper-46 .cbx:hover span:first-child { border-color: var(--color-yellow); }
.checkbox-wrapper-46 .inp-cbx:checked + .cbx span:first-child { background: var(--color-yellow); border-color: var(--color-yellow); animation: wave-46 0.4s ease; }
.checkbox-wrapper-46 .inp-cbx:checked + .cbx span:first-child svg { stroke-dashoffset: 0; }
.checkbox-wrapper-46 .inp-cbx:checked + .cbx span:first-child:before { transform: scale(3.5); opacity: 0; transition: all 0.6s ease; }
@keyframes wave-46 { 50% { transform: scale(0.9); } }

/* Multi-choice group container (cards around checkbox groups) */
.multi-choice-group {
    padding: 12px 14px;
    border-radius: 10px;
    border: 1px solid var(--color-gray-200);
    box-shadow: var(--shadow-sm);
    display: flex;
    gap: 12px;
}
.multi-choice-group legend {
    font-weight: 700;
    color: var(--color-gray-700);
    margin-bottom: 8px;
    padding: 0 6px;
}
.multi-choice-group .checkbox-wrapper-46 {
    margin-bottom: 8px;
}