/* ====================================
   TABLA DE CONTENIDOS
   ====================================
   1. Variables CSS
   2. Reset y Estilos Base
   3. Utilidades
   4. Header & Navegación
   5. Hero Section
   6. About Section
   7. Services Section
   8. Companies Section
   9. Contact Section
   10. Footer
   11. Botón WhatsApp Flotante
   12. Scroll to Top
   13. Animaciones
   14. Media Queries Responsive
   ==================================== */


/* ==================================== 
   1. VARIABLES CSS 
   ==================================== */
:root {
    /* Colores principales */
    --color-primary: #FFD700;        /* Amarillo dorado */
    --color-primary-dark: #FFA500;   /* Amarillo oscuro/naranja */
    --color-primary-light: #FFEB3B;  /* Amarillo claro */
    
    /* Escala de grises */
    --color-dark: #0A0A0A;           /* Negro profundo */
    --color-dark-2: #1A1A1A;         /* Gris muy oscuro */
    --color-dark-3: #2A2A2A;         /* Gris oscuro */
    --color-gray: #4A4A4A;           /* Gris medio */
    --color-gray-light: #6A6A6A;     /* Gris claro */
    --color-gray-lighter: #9A9A9A;   /* Gris muy claro */
    --color-light: #F5F5F5;          /* Casi blanco */
    --color-white: #FFFFFF;          /* Blanco puro */
    
    /* Colores de estado */
    --color-success: #4CAF50;
    --color-error: #F44336;
    --color-warning: #FF9800;
    
    /* Tipografía */
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Montserrat', sans-serif;
    
    /* Tamaños de fuente */
    --text-xs: 0.75rem;      /* 12px */
    --text-sm: 0.875rem;     /* 14px */
    --text-base: 1rem;       /* 16px */
    --text-lg: 1.125rem;     /* 18px */
    --text-xl: 1.25rem;      /* 20px */
    --text-2xl: 1.5rem;      /* 24px */
    --text-3xl: 1.875rem;    /* 30px */
    --text-4xl: 2.25rem;     /* 36px */
    --text-5xl: 3rem;        /* 48px */
    --text-6xl: 3.75rem;     /* 60px */
    
    /* Espaciado */
    --spacing-xs: 0.5rem;    /* 8px */
    --spacing-sm: 1rem;      /* 16px */
    --spacing-md: 1.5rem;    /* 24px */
    --spacing-lg: 2rem;      /* 32px */
    --spacing-xl: 3rem;      /* 48px */
    --spacing-2xl: 4rem;     /* 64px */
    --spacing-3xl: 6rem;     /* 96px */
    
    /* Bordes */
    --radius-sm: 0.25rem;    /* 4px */
    --radius-md: 0.5rem;     /* 8px */
    --radius-lg: 1rem;       /* 16px */
    --radius-full: 9999px;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 20px rgba(255, 215, 0, 0.3);
    
    /* Transiciones */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1040;
    --z-popover: 1050;
    --z-tooltip: 1060;
    
    /* Anchos máximos */
    --max-width: 1200px;
    --max-width-sm: 640px;
    --max-width-md: 768px;
    --max-width-lg: 1024px;
}


/* ==================================== 
   2. RESET Y ESTILOS BASE 
   ==================================== */

/* Reset básico */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

/* Estilos del body */
body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-light);
    background-color: var(--color-dark);
    overflow-x: hidden;
}

/* Encabezados */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-secondary);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-white);
}

/* Enlaces */
a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-base);
}

/* Listas */
ul {
    list-style: none;
}

/* Imágenes */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Botones */
button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    transition: var(--transition-base);
}

/* Inputs y textareas */
input, 
textarea, 
select {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
}

/* SVG */
svg {
    display: block;
    max-width: 100%;
    height: auto;
}


/* ==================================== 
   3. UTILIDADES 
   ==================================== */

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Section */
.section {
    padding: var(--spacing-3xl) 0;
    position: relative;
}

/* Section header */
.section__header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section__subtitle {
    display: inline-block;
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.section__title {
    font-size: var(--text-4xl);
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-white), var(--color-gray-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Highlight text */
.highlight {
    color: var(--color-primary);
    position: relative;
}

/* Botones */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--text-base);
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn svg {
    width: 20px;
    height: 20px;
}

.btn--primary {
    background: var(--color-primary);
    color: var(--color-dark);
    box-shadow: var(--shadow-glow);
}

.btn--primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(255, 215, 0, 0.5);
}

.btn--secondary {
    background: transparent;
    color: var(--color-white);
    border: 2px solid var(--color-primary);
}

.btn--secondary:hover {
    background: var(--color-primary);
    color: var(--color-dark);
}

.btn--full {
    width: 100%;
    justify-content: center;
}


/* ==================================== 
   4. HEADER & NAVEGACIÓN 
   ==================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    z-index: var(--z-fixed);
    transition: var(--transition-base);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

/* Logo */
.nav__logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--text-xl);
    font-weight: 700;
    font-family: var(--font-secondary);
}

.logo__text {
    color: var(--color-white);
}

.logo__highlight {
    color: var(--color-primary);
}

/* Menu de navegación */
.nav__list {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav__link {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-gray-lighter);
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    padding: 0.5rem 0;
}

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

.nav__link:hover,
.nav__link.active {
    color: var(--color-primary);
}

.nav__link:hover::after,
.nav__link.active::after {
    width: 100%;
}

/* Toggle menu móvil */
.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.nav__toggle span {
    width: 25px;
    height: 3px;
    background: var(--color-primary);
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
}

.nav__close {
    display: none;
}


/* ==================================== 
   5. HERO SECTION - CARRUSEL
   ==================================== */

.hero {
    min-height: 100vh;
    position: relative;
    overflow: hidden;
}

/* Contenedor del carrusel */
.hero__carousel {
    position: relative;
    width: 100%;
    height: 100vh;
}

/* Slides individuales */
.hero__slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 1s ease, visibility 1s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero__slide.active {
    opacity: 1;
    visibility: visible;
    z-index: 1;
}

/* Background del slide */
.hero__slide-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    transition: transform 8s ease;
}

.hero__slide.active .hero__slide-bg {
    animation: kenBurns 15s ease-in-out infinite alternate;
}

/* Overlay con patrón */
.hero__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 35px,
            rgba(255, 215, 0, 0.03) 35px,
            rgba(255, 215, 0, 0.03) 70px
        );
    pointer-events: none;
    z-index: 1;
}

/* Contenido del hero */
.hero__content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: var(--spacing-2xl) 0;
}

.hero__title {
    font-size: var(--text-6xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
}

.hero__slide.active .hero__title {
    animation: fadeInUp 0.8s ease-out;
}

.hero__description {
    font-size: var(--text-xl);
    color: var(--color-gray-lighter);
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
}

.hero__slide.active .hero__description {
    animation: fadeInUp 1s ease-out;
}

.hero__buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.hero__slide.active .hero__buttons {
    animation: fadeInUp 1.2s ease-out;
}

/* Controles del carrusel */
.hero__controls {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    z-index: 10;
    display: flex;
    justify-content: space-between;
    padding: 0 var(--spacing-md);
    pointer-events: none;
}

.hero__control {
    width: 50px;
    height: 50px;
    background: rgba(255, 215, 0, 0.15);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 215, 0, 0.3);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    cursor: pointer;
    transition: all var(--transition-base);
    pointer-events: all;
}

.hero__control:hover {
    background: rgba(255, 215, 0, 0.25);
    border-color: var(--color-primary);
    transform: scale(1.1);
}

.hero__control svg {
    width: 24px;
    height: 24px;
}

/* Indicadores (dots) */
.hero__indicators {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--spacing-sm);
    z-index: 10;
}

.hero__indicator {
    width: 12px;
    height: 12px;
    background: rgba(255, 255, 255, 0.3);
    border: 2px solid rgba(255, 215, 0, 0.5);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
}

.hero__indicator.active {
    background: var(--color-primary);
    width: 40px;
    border-color: var(--color-primary);
}

.hero__indicator:hover {
    background: rgba(255, 215, 0, 0.6);
    border-color: var(--color-primary);
}

/* Indicador de scroll */
.hero__scroll {
    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-primary);
    font-size: var(--text-sm);
    animation: bounce 2s infinite;
    z-index: 10;
}

.scroll__arrow {
    width: 2px;
    height: 30px;
    background: var(--color-primary);
    position: relative;
}

.scroll__arrow::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
    width: 10px;
    height: 10px;
    border-right: 2px solid var(--color-primary);
    border-bottom: 2px solid var(--color-primary);
}

/* Animación Ken Burns para fondos */
@keyframes kenBurns {
    0% {
        transform: scale(1);
    }
    100% {
        transform: scale(1.1);
    }
}


/* ==================================== 
   6. ABOUT SECTION 
   ==================================== */

.about {
    background: var(--color-dark-2);
}

.about__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.about__text {
    font-size: var(--text-lg);
    color: var(--color-gray-lighter);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.about__text strong {
    color: var(--color-primary);
}

/* Stats */
.about__stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.stat {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--color-dark-3);
    border-radius: var(--radius-lg);
    border: 2px solid transparent;
    transition: var(--transition-base);
}

.stat:hover {
    border-color: var(--color-primary);
    transform: translateY(-5px);
}

.stat__number {
    display: block;
    font-size: var(--text-4xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.stat__label {
    display: block;
    font-size: var(--text-sm);
    color: var(--color-gray-lighter);
}

/* Imagen decorativa */
.about__image {
    display: flex;
    align-items: center;
    justify-content: center;
}

.image__card {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--color-dark-3), var(--color-dark-2));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px solid var(--color-primary);
    box-shadow: var(--shadow-glow);
    animation: float 3s ease-in-out infinite;
}

.about__icon {
    width: 150px;
    height: 150px;
    color: var(--color-primary);
}


/* ==================================== 
   7. SERVICES SECTION 
   ==================================== */

.services {
    background: var(--color-dark);
}

.services__container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.service__card {
    background: var(--color-dark-2);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-dark-3);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.service__card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--color-primary);
    transform: scaleX(0);
    transition: var(--transition-base);
}

.service__card:hover {
    border-color: var(--color-primary);
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.service__card:hover::before {
    transform: scaleX(1);
}

.service__icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.service__icon svg {
    width: 35px;
    height: 35px;
    color: var(--color-dark);
}

.service__title {
    font-size: var(--text-2xl);
    margin-bottom: var(--spacing-sm);
    color: var(--color-white);
}

.service__description {
    font-size: var(--text-base);
    color: var(--color-gray-lighter);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.service__features {
    list-style: none;
}

.service__features li {
    font-size: var(--text-sm);
    color: var(--color-gray-light);
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
}

.service__features li::before {
    content: '⚡';
    position: absolute;
    left: 0;
    color: var(--color-primary);
}


/* ==================================== 
   8. COMPANIES SECTION 
   ==================================== */

.companies {
    background: var(--color-dark-2);
}

.companies__container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.company__card {
    background: var(--color-dark);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-dark-3);
    transition: all var(--transition-base);
    cursor: pointer;
}

.company__card:hover {
    border-color: var(--color-primary);
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
}

.company__header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.company__logo {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.company__logo svg {
    width: 30px;
    height: 30px;
    color: var(--color-dark);
}

.company__name {
    font-size: var(--text-2xl);
    color: var(--color-white);
}

.company__description {
    font-size: var(--text-base);
    color: var(--color-gray-lighter);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.company__specialties {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.specialty__tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-dark-3);
    color: var(--color-primary);
    font-size: var(--text-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    border: 1px solid var(--color-primary);
}


/* ==================================== 
   9. CONTACT SECTION 
   ==================================== */

.contact {
    background: var(--color-dark);
}

.contact__container {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-2xl);
}

/* Información de contacto */
.contact__info-title {
    font-size: var(--text-3xl);
    margin-bottom: var(--spacing-md);
}

.contact__info-text {
    font-size: var(--text-lg);
    color: var(--color-gray-lighter);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

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

.contact__detail {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-dark-2);
    border-radius: var(--radius-md);
    border: 2px solid var(--color-dark-3);
    transition: var(--transition-base);
}

.contact__detail:hover {
    border-color: var(--color-primary);
    transform: translateX(5px);
}

.detail__icon {
    width: 40px;
    height: 40px;
    color: var(--color-primary);
    flex-shrink: 0;
}

.contact__detail h4 {
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-xs);
}

.contact__detail p {
    font-size: var(--text-sm);
    color: var(--color-gray-lighter);
}

/* Formulario de contacto */
.contact__form {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    background: var(--color-dark-2);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-dark-3);
    box-shadow: var(--shadow-xl);
}

.form__group {
    position: relative;
}

.form__group--full {
    grid-column: 1 / -1;
}

/* Inputs mejorados */
.form__input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 3rem;
    background: var(--color-dark-3);
    color: var(--color-white);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    font-size: var(--text-base);
    transition: all var(--transition-base);
}

.form__input:focus {
    border-color: var(--color-primary);
    background: var(--color-dark);
    box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.1);
}

.form__input:focus + .form__label,
.form__input:not(:placeholder-shown) + .form__label {
    top: -12px;
    left: var(--spacing-sm);
    font-size: var(--text-xs);
    color: var(--color-primary);
    background: var(--color-dark-2);
    padding: 0 var(--spacing-xs);
}

/* Labels flotantes */
.form__label {
    position: absolute;
    top: 50%;
    left: 3rem;
    transform: translateY(-50%);
    font-size: var(--text-base);
    color: var(--color-gray-light);
    pointer-events: none;
    transition: all var(--transition-base);
}

.form__label--select {
    top: -12px;
    left: var(--spacing-sm);
    font-size: var(--text-xs);
    color: var(--color-primary);
    background: var(--color-dark-2);
    padding: 0 var(--spacing-xs);
    transform: translateY(0);
}

/* Iconos de inputs */
.form__icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--color-gray-light);
    pointer-events: none;
    transition: var(--transition-base);
}

.form__input:focus ~ .form__icon {
    color: var(--color-primary);
}

/* Select personalizado */
.custom__select {
    position: relative;
    width: 100%;
}

.form__select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    cursor: pointer;
    padding-left: 10%;
    padding-right: 3rem;
    background-image: none;
}

.form__select option {
    background: var(--color-dark-2);
    color: var(--color-white);
    padding: var(--spacing-sm);
}

.form__select option:hover {
    background: var(--color-dark-3);
}

.select__arrow {
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--color-primary);
    pointer-events: none;
    transition: var(--transition-base);
}

.form__select:focus ~ .select__arrow {
    transform: translateY(-50%) rotate(180deg);
}

/* Textarea */
.form__textarea {
    resize: vertical;
    min-height: 120px;
    padding-top: var(--spacing-md);
}

.form__group--full .form__label {
    left: 3rem;
}

.form__group--full .form__icon {
    top: var(--spacing-md);
    transform: translateY(0);
}

/* Botón de submit mejorado */
.btn--submit {
    grid-column: 1 / -1;  
    margin-top: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--text-lg);
    font-weight: 700;
    position: relative;
    overflow: hidden;
}

.btn--submit::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn--submit:hover::before {
    width: 300px;
    height: 300px;
}

.btn--submit:active {
    transform: scale(0.98);
}

/* Mensajes del formulario */
.form__message {
    grid-column: 1 / -1;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
    font-weight: 600;
    font-size: var(--text-base);
    display: none;
    animation: slideDown 0.4s ease-out;
}

.form__message.success {
    display: block;
    background: rgba(76, 175, 80, 0.15);
    border: 2px solid var(--color-success);
    color: var(--color-success);
}

.form__message.error {
    display: block;
    background: rgba(244, 67, 54, 0.15);
    border: 2px solid var(--color-error);
    color: var(--color-error);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}


/* ==================================== 
   10. FOOTER 
   ==================================== */

.footer {
    background: var(--color-dark-2);
    padding: var(--spacing-2xl) 0 var(--spacing-md);
    border-top: 3px solid var(--color-primary);
}

.footer__container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer__logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--text-xl);
    font-weight: 700;
    font-family: var(--font-secondary);
    margin-bottom: var(--spacing-md);
}

.footer__description {
    font-size: var(--text-sm);
    color: var(--color-gray-lighter);
    line-height: 1.8;
}

.footer__title {
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.footer__links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer__links li,
.footer__links a {
    font-size: var(--text-sm);
    color: var(--color-gray-lighter);
    transition: var(--transition-fast);
}

.footer__links a:hover {
    color: var(--color-primary);
    padding-left: var(--spacing-xs);
}

.footer__bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-dark-3);
}

.footer__bottom p {
    font-size: var(--text-sm);
    color: var(--color-gray-light);
}


/* ==================================== 
   11. BOTÓN WHATSAPP FLOTANTE 
   ==================================== */

.whatsapp-float {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #25D366, #128C7E);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-fixed);
    transition: all var(--transition-base);
    animation: pulse 2s infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 0 30px rgba(37, 211, 102, 0.6);
}

.whatsapp-float svg {
    width: 35px;
    height: 35px;
}


/* ==================================== 
   12. SCROLL TO TOP 
   ==================================== */

.scroll-top {
    position: fixed;
    bottom: var(--spacing-lg);
    left: var(--spacing-lg);
    width: 50px;
    height: 50px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-dark);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-fixed);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
}

.scroll-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-top:hover {
    background: var(--color-primary-dark);
    transform: translateY(-5px);
}

.scroll-top svg {
    width: 24px;
    height: 24px;
}


/* ==================================== 
   13. ANIMACIONES 
   ==================================== */

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

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

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
    }
    50% {
        box-shadow: 0 0 0 20px rgba(37, 211, 102, 0);
    }
}


/* ==================================== 
   14. MEDIA QUERIES RESPONSIVE 
   ==================================== */

/* Tablets y dispositivos medianos (máx. 1024px) */
@media screen and (max-width: 1024px) {
    :root {
        --text-6xl: 2.75rem;
        --text-5xl: 2.25rem;
        --text-4xl: 2rem;
        --text-3xl: 1.75rem;
        --spacing-3xl: 4.5rem;
    }
    
    /* Hero section en tablets */
    .hero__control {
        width: 45px;
        height: 45px;
    }
    
    .hero__control svg {
        width: 20px;
        height: 20px;
    }
    
    /* Services y companies en 2 columnas */
    .services__container,
    .companies__container {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    /* Footer en 2 columnas */
    .footer__container {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
    
    /* About stats en 2 columnas */
    .about__stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Tablets pequeñas (máx. 768px) */
@media screen and (max-width: 768px) {
    :root {
        --text-6xl: 2.25rem;
        --text-5xl: 2rem;
        --text-4xl: 1.75rem;
        --text-3xl: 1.5rem;
        --text-2xl: 1.375rem;
        --spacing-xl: 2.5rem;
        --spacing-2xl: 3.5rem;
        --spacing-3xl: 4rem;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .section {
        padding: var(--spacing-2xl) 0;
    }
    
    /* Navegación móvil */
    .nav {
        height: 70px;
    }
    
    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 85%;
        max-width: 320px;
        height: 100vh;
        background: rgba(26, 26, 26, 0.98);
        backdrop-filter: blur(20px);
        padding: var(--spacing-2xl) var(--spacing-lg);
        transition: var(--transition-base);
        box-shadow: -5px 0 30px rgba(0, 0, 0, 0.7);
        z-index: var(--z-modal);
    }
    
    .nav__menu.show {
        right: 0;
    }
    
    .nav__list {
        flex-direction: column;
        gap: var(--spacing-lg);
        align-items: flex-start;
    }
    
    .nav__link {
        font-size: var(--text-lg);
        padding: var(--spacing-xs) 0;
    }
    
    .nav__close {
        display: block;
        position: absolute;
        top: var(--spacing-lg);
        right: var(--spacing-lg);
        font-size: 2.5rem;
        color: var(--color-primary);
        cursor: pointer;
        width: 40px;
        height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: var(--color-dark-3);
        border-radius: var(--radius-md);
        transition: var(--transition-base);
    }
    
    .nav__close:hover {
        background: var(--color-primary);
        color: var(--color-dark);
        transform: rotate(90deg);
    }
    
    .nav__toggle {
        display: flex;
        z-index: var(--z-fixed);
    }
    
    /* Hero section móvil */
    .hero__title {
        font-size: var(--text-4xl);
        line-height: 1.2;
    }
    
    .hero__description {
        font-size: var(--text-lg);
        padding: 0 var(--spacing-sm);
    }
    
    .hero__buttons {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm);
    }
    
    .hero__buttons .btn {
        width: 100%;
        max-width: 280px;
        align-items: center;
        justify-content: center;
        
    }
    
    .hero__control {
        width: 40px;
        height: 40px;
        background: rgba(255, 215, 0, 0.2);
    }
    
    .hero__control svg {
        width: 18px;
        height: 18px;
    }
    
    .hero__indicators {
        bottom: var(--spacing-lg);
    }
    
    .hero__scroll {
        display: none;
    }
    
    /* About section móvil */
    .about__container {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .about__text {
        font-size: var(--text-base);
    }
    
    .about__stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .stat {
        padding: var(--spacing-lg);
    }
    
    .image__card {
        width: 250px;
        height: 250px;
    }
    
    .about__icon {
        width: 120px;
        height: 120px;
    }
    
    /* Services section móvil */
    .services__container {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .service__card {
        padding: var(--spacing-lg);
    }
    
    /* Companies section móvil */
    .companies__container {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .company__card {
        padding: var(--spacing-lg);
    }
    
    /* Contact section móvil */
    .contact__container {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .contact__info-title {
        font-size: var(--text-2xl);
    }
    
    .contact__info-text {
        font-size: var(--text-base);
    }
    
    .contact__form {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        padding: var(--spacing-lg);
    }
    
    .form__input {
        padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 3rem;
        font-size: var(--text-base);
    }
    
    .btn--submit {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: var(--text-base);
    }
    
    /* Footer móvil */
    .footer__container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-xl);
    }
    
    .footer__logo {
        justify-content: center;
    }
    
    /* WhatsApp button ajuste móvil */
    .whatsapp-float {
        width: 56px;
        height: 56px;
        bottom: var(--spacing-lg);
        right: var(--spacing-md);
    }
    
    .whatsapp-float svg {
        width: 32px;
        height: 32px;
    }
    
    .scroll-top {
        width: 45px;
        height: 45px;
        bottom: calc(var(--spacing-lg) + 70px);
        left: var(--spacing-md);
    }
    
    .scroll-top svg {
        width: 20px;
        height: 20px;
    }
}

/* Móviles pequeños (máx. 480px) */
@media screen and (max-width: 480px) {
    :root {
        --text-6xl: 1.875rem;
        --text-5xl: 1.625rem;
        --text-4xl: 1.5rem;
        --text-3xl: 1.375rem;
        --text-2xl: 1.25rem;
        --text-xl: 1.125rem;
        --text-lg: 1rem;
        --spacing-sm: 0.875rem;
        --spacing-md: 1.25rem;
        --spacing-lg: 1.75rem;
        --spacing-xl: 2rem;
        --spacing-2xl: 2.5rem;
        --spacing-3xl: 3rem;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .section {
        padding: var(--spacing-2xl) 0;
    }
    
    /* Header móvil pequeño */
    .nav {
        height: 65px;
    }
    
    .nav__logo {
        font-size: var(--text-lg);
    }
    
    .nav__menu {
        width: 90%;
        max-width: 280px;
        padding: var(--spacing-xl) var(--spacing-md);
    }
    
    .nav__list {
        gap: var(--spacing-md);
    }
    
    .nav__link {
        font-size: var(--text-base);
    }
    
    /* Hero móvil pequeño */
    .hero__title {
        font-size: var(--text-3xl);
        margin-bottom: var(--spacing-sm);
    }
    
    .hero__description {
        font-size: var(--text-base);
        margin-bottom: var(--spacing-lg);
    }
    
    .hero__buttons .btn {
        font-size: var(--text-sm);
        padding: var(--spacing-sm) var(--spacing-md);
        max-width: 260px;
        align-items: center;
        justify-content: center;
    }
    
    .hero__control {
        width: 36px;
        height: 36px;
    }
    
    .hero__controls {
        padding: 0 var(--spacing-xs);
    }
    
    .hero__indicator {
        width: 10px;
        height: 10px;
    }
    
    .hero__indicator.active {
        width: 30px;
    }
    
    /* Section headers móvil pequeño */
    .section__title {
        font-size: var(--text-2xl);
    }
    
    .section__subtitle {
        font-size: var(--text-xs);
    }
    
    /* About móvil pequeño */
    .about__text {
        font-size: var(--text-sm);
        line-height: 1.7;
    }
    
    .stat {
        padding: var(--spacing-md);
    }
    
    .stat__number {
        font-size: var(--text-3xl);
    }
    
    .stat__label {
        font-size: var(--text-xs);
    }
    
    .image__card {
        width: 200px;
        height: 200px;
    }
    
    .about__icon {
        width: 100px;
        height: 100px;
    }
    
    /* Service cards móvil pequeño */
    .service__card,
    .company__card {
        padding: var(--spacing-md);
    }
    
    .service__icon,
    .company__logo {
        width: 50px;
        height: 50px;
    }
    
    .service__icon svg,
    .company__logo svg {
        width: 28px;
        height: 28px;
    }
    
    .service__title,
    .company__name {
        font-size: var(--text-xl);
    }
    
    .service__description,
    .company__description {
        font-size: var(--text-sm);
    }
    
    .service__features li {
        font-size: var(--text-xs);
    }
    
    .specialty__tag {
        font-size: 0.65rem;
        padding: 0.375rem var(--spacing-xs);
    }
    
    /* Contact móvil pequeño */
    .contact__info-title {
        font-size: var(--text-xl);
    }
    
    .contact__info-text {
        font-size: var(--text-sm);
    }
    
    .contact__detail {
        padding: var(--spacing-sm);
        flex-direction: column;
        text-align: center;
        align-items: center;
    }
    
    .detail__icon {
        width: 35px;
        height: 35px;
    }
    
    .contact__detail h4 {
        font-size: var(--text-base);
    }
    
    .contact__detail p {
        font-size: var(--text-xs);
    }
    
    .contact__form {
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
    }
    
    .form__input {
        padding: var(--spacing-sm) var(--spacing-sm) var(--spacing-sm) 2.5rem;
        font-size: var(--text-sm);
    }
    
    .form__label {
        left: 2.5rem;
        font-size: var(--text-sm);
    }
    
    .form__icon {
        left: var(--spacing-sm);
        width: 18px;
        height: 18px;
    }
    
    .select__arrow {
        right: var(--spacing-sm);
        width: 18px;
        height: 18px;
    }
    
    .btn--submit {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--text-sm);
    }
    
    .form__message {
        font-size: var(--text-sm);
        padding: var(--spacing-sm);
    }
    
    /* Footer móvil pequeño */
    .footer {
        padding: var(--spacing-xl) 0 var(--spacing-sm);
    }
    
    .footer__container {
        gap: var(--spacing-lg);
    }
    
    .footer__logo {
        font-size: var(--text-lg);
    }
    
    .footer__description {
        font-size: var(--text-xs);
    }
    
    .footer__title {
        font-size: var(--text-base);
        margin-bottom: var(--spacing-sm);
    }
    
    .footer__links li,
    .footer__links a {
        font-size: var(--text-xs);
    }
    
    .footer__bottom p {
        font-size: var(--text-xs);
    }
    
    /* Botones flotantes móvil pequeño */
    .whatsapp-float {
        width: 52px;
        height: 52px;
        bottom: var(--spacing-md);
        right: var(--spacing-sm);
    }
    
    .whatsapp-float svg {
        width: 28px;
        height: 28px;
    }
    
    .scroll-top {
        width: 42px;
        height: 42px;
        bottom: calc(var(--spacing-md) + 65px);
        left: var(--spacing-sm);
    }
    
    .scroll-top svg {
        width: 18px;
        height: 18px;
    }
}

/* Landscape móviles (orientación horizontal) */
@media screen and (max-height: 500px) and (orientation: landscape) {
    .hero__title {
        font-size: var(--text-2xl);
        margin-bottom: var(--spacing-xs);
    }
    
    .hero__description {
        font-size: var(--text-sm);
        margin-bottom: var(--spacing-sm);
    }
    
    .hero__buttons {
        gap: var(--spacing-xs);
    }
    
    .hero__buttons .btn {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: var(--text-sm);
         align-items: center;
        justify-content: center;
    }
    
    .hero__scroll {
        display: none;
    }
    
    .hero__indicators {
        bottom: var(--spacing-sm);
    }
}

/* Mejoras de accesibilidad para dispositivos táctiles */
@media (hover: none) and (pointer: coarse) {
    /* Aumentar área táctil de botones */
    .btn,
    .nav__link,
    .hero__control,
    .hero__indicator {
        min-height: 44px;
        min-width: 44px;
    }
    
    /* Mejorar feedback táctil */
    .btn:active {
        transform: scale(0.95);
    }
    
    .nav__link:active {
        background: rgba(255, 215, 0, 0.1);
    }
}