/* ==========================================
   HandyTecnologia - Main Stylesheet
   Colors: Blue (#0066FF) & Gray (#6B7280)
   ========================================== */

/* CSS Variables */
:root {
    /* Primary Colors */
    --primary: #0066FF;
    --primary-dark: #0052CC;
    --primary-light: #3385FF;
    --primary-gradient: linear-gradient(135deg, #0066FF 0%, #00D4FF 100%);
    
    /* Secondary Colors */
    --secondary: #6B7280;
    --secondary-dark: #4B5563;
    --secondary-light: #9CA3AF;
    
    /* Neutral Colors */
    --dark: #111827;
    --dark-blue: #0F172A;
    --gray-900: #1F2937;
    --gray-800: #374151;
    --gray-700: #4B5563;
    --gray-600: #6B7280;
    --gray-500: #9CA3AF;
    --gray-400: #D1D5DB;
    --gray-300: #E5E7EB;
    --gray-200: #F3F4F6;
    --gray-100: #F9FAFB;
    --white: #FFFFFF;
    
    /* Accent Colors */
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    --info: #3B82F6;
    
    /* Typography */
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Inter', sans-serif;
    
    /* Spacing */
    --section-padding: 100px 0;
    --container-padding: 0 20px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-blue: 0 10px 40px -10px rgba(0, 102, 255, 0.4);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;
}

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

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

body {
    font-family: var(--font-secondary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--gray-700);
    background-color: var(--white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    line-height: 1.2;
    color: var(--dark);
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-normal);
}

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

ul {
    list-style: none;
}

/* Container */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--container-padding);
}

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

/* ==========================================
   Preloader
   ========================================== */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--dark-blue);
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#preloader.loaded {
    opacity: 0;
    visibility: hidden;
}

.loader {
    width: 60px;
    height: 60px;
    border: 3px solid var(--gray-700);
    border-radius: 50%;
    position: relative;
    animation: rotate 1s linear infinite;
}

.loader-inner {
    width: 100%;
    height: 100%;
    border: 3px solid transparent;
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: rotate 0.5s linear reverse infinite;
}

@keyframes rotate {
    100% { transform: rotate(360deg); }
}

/* ==========================================
   Navigation
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    padding: 12px 0;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-placeholder {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-family: var(--font-primary);
    color: var(--white);
    transition: var(--transition-normal);
}

.navbar.scrolled .logo-placeholder {
    color: var(--dark);
}

.logo-placeholder i {
    font-size: 2rem;
    color: var(--primary);
}

.logo-placeholder span {
    font-weight: 300;
}

.logo-placeholder strong {
    font-weight: 700;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 10px 16px;
    font-size: 0.95rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
}

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

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
    background: rgba(0, 102, 255, 0.1);
}

.nav-cta {
    margin-left: 16px;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--white);
    transition: var(--transition-normal);
}

.navbar.scrolled .nav-toggle span {
    background: var(--dark);
}

/* ==========================================
   Buttons
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    font-family: var(--font-primary);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition-normal);
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

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

.btn-outline {
    background: transparent;
    color: var(--white);
    border-color: var(--white);
}

.btn-outline:hover {
    background: var(--white);
    color: var(--primary);
}

.btn-white {
    background: var(--white);
    color: var(--primary);
    border-color: var(--white);
}

.btn-white:hover {
    background: var(--gray-100);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1rem;
}

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

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.95) 0%, rgba(0, 102, 255, 0.7) 100%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding-top: 100px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(0, 102, 255, 0.2);
    border: 1px solid rgba(0, 102, 255, 0.3);
    border-radius: var(--radius-full);
    color: var(--primary-light);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 20px;
}

.hero h1 {
    font-size: 3.5rem;
    color: var(--white);
    margin-bottom: 24px;
    line-height: 1.1;
}

.gradient-text {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--gray-300);
    margin-bottom: 32px;
    max-width: 540px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-family: var(--font-primary);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--white);
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    color: var(--gray-400);
    margin-top: 4px;
}

.hero-image {
    position: relative;
}

.hero-image img {
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
}

.hero-image .floating {
    animation: floating 3s ease-in-out infinite;
}

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

.hero-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 20px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    font-weight: 600;
    color: var(--dark);
}

.hero-card i {
    font-size: 1.5rem;
    color: var(--primary);
}

.hero-card.card-1 {
    top: 20px;
    left: -30px;
    animation: slideRight 3s ease-in-out infinite;
}

.hero-card.card-2 {
    bottom: 40px;
    right: -30px;
    animation: slideLeft 3s ease-in-out infinite;
}

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

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

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
}

.hero-scroll a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    color: var(--white);
    animation: bounce 2s infinite;
}

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

/* ==========================================
   Section Header & Tags
   ========================================== */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-header.light {
    color: var(--white);
}

.section-header.light p {
    color: var(--gray-300);
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(0, 102, 255, 0.1);
    border-radius: var(--radius-full);
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--gray-600);
}

/* ==========================================
   Sobre Section
   ========================================== */
.sobre-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.sobre-image {
    position: relative;
}

.sobre-image img {
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
}

.experience-badge {
    position: absolute;
    bottom: -30px;
    right: -30px;
    background: var(--primary);
    color: var(--white);
    padding: 24px 32px;
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-blue);
}

.exp-number {
    display: block;
    font-family: var(--font-primary);
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
}

.exp-text {
    font-size: 0.85rem;
    font-weight: 500;
    opacity: 0.9;
}

.sobre-text .lead {
    font-size: 1.15rem;
    color: var(--gray-700);
    margin-bottom: 20px;
}

.sobre-text p {
    margin-bottom: 24px;
    color: var(--gray-600);
}

.sobre-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 32px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
    color: var(--gray-700);
}

.feature-item i {
    color: var(--success);
    font-size: 1.1rem;
}

/* ==========================================
   Serviços Section
   ========================================== */
.servicos {
    background: var(--gray-100);
}

.servicos .section-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://images.unsplash.com/photo-1451187580459-43490279c0fa?w=1920&q=80') center/cover no-repeat;
    opacity: 0.03;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background: var(--white);
    padding: 40px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

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

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card.featured {
    background: var(--primary);
    color: var(--white);
}

.service-card.featured::before {
    background: var(--white);
    transform: scaleX(1);
}

.service-card.featured h3,
.service-card.featured p {
    color: var(--white);
}

.service-card.featured .service-icon {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
}

.service-card.featured .service-list li {
    color: rgba(255, 255, 255, 0.9);
}

.service-card.featured .service-list i {
    color: var(--white);
}

.service-card.featured .service-link {
    color: var(--white);
}

.featured-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(255, 255, 255, 0.2);
    padding: 6px 12px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.service-icon {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 102, 255, 0.1);
    border-radius: var(--radius-lg);
    margin-bottom: 24px;
}

.service-icon i {
    font-size: 1.8rem;
    color: var(--primary);
}

.service-card h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
}

.service-card p {
    color: var(--gray-600);
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.service-list {
    margin-bottom: 24px;
}

.service-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    font-size: 0.9rem;
    color: var(--gray-700);
}

.service-list i {
    color: var(--primary);
    font-size: 0.8rem;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-weight: 600;
    font-size: 0.95rem;
}

.service-link:hover {
    gap: 12px;
}

/* ==========================================
   Soluções/Tecnologias Section
   ========================================== */
.tech-showcase {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.tech-category {
    background: var(--white);
    padding: 30px 40px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.tech-category h3 {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.2rem;
    margin-bottom: 24px;
    color: var(--primary);
}

.tech-items {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    justify-content: center;
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 20px 30px;
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
}

.tech-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    background: var(--white);
}

.tech-item img {
    width: 50px;
    height: 50px;
    object-fit: contain;
}

.tech-item span {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--gray-700);
}

/* ==========================================
   Diferenciais Section
   ========================================== */
.diferenciais {
    background: var(--dark-blue);
    position: relative;
    overflow: hidden;
}

.section-bg-gradient {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(0, 102, 255, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 212, 255, 0.2) 0%, transparent 50%);
}

.diff-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.diff-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 40px 30px;
    border-radius: var(--radius-xl);
    text-align: center;
    transition: var(--transition-normal);
}

.diff-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-10px);
}

.diff-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    border-radius: var(--radius-lg);
    margin: 0 auto 24px;
}

.diff-icon i {
    font-size: 2rem;
    color: var(--white);
}

.diff-card h3 {
    font-size: 1.2rem;
    color: var(--white);
    margin-bottom: 12px;
}

.diff-card p {
    color: var(--gray-400);
    font-size: 0.95rem;
}

.cta-box {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 40px 50px;
    border-radius: var(--radius-xl);
}

.cta-content h3 {
    font-size: 1.5rem;
    color: var(--white);
    margin-bottom: 8px;
}

.cta-content p {
    color: var(--gray-400);
}

/* ==========================================
   Contato Section
   ========================================== */
.contato-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
}

.contato-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.info-card {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 24px;
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
}

.info-card:hover {
    background: var(--white);
    box-shadow: var(--shadow-md);
}

.info-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.info-icon i {
    font-size: 1.2rem;
    color: var(--white);
}

.info-content h4 {
    font-size: 1rem;
    margin-bottom: 4px;
}

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

.social-links {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.social-link {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    border-radius: var(--radius-md);
    color: var(--white);
    transition: var(--transition-normal);
}

.social-link:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}

.contato-form {
    background: var(--white);
    padding: 40px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--gray-700);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    font-family: var(--font-secondary);
    font-size: 1rem;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    background: var(--dark-blue);
    color: var(--gray-400);
}

.footer-top {
    padding: 80px 0 60px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 60px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-family: var(--font-primary);
    color: var(--white);
    margin-bottom: 20px;
}

.footer-logo i {
    font-size: 2rem;
    color: var(--primary);
}

.footer-about p {
    margin-bottom: 24px;
    line-height: 1.8;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--white);
    transition: var(--transition-normal);
}

.footer-social a:hover {
    background: var(--primary);
}

.footer-col h4 {
    color: var(--white);
    font-size: 1.1rem;
    margin-bottom: 24px;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul a {
    color: var(--gray-400);
    transition: var(--transition-normal);
}

.footer-col ul a:hover {
    color: var(--primary);
    padding-left: 5px;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 16px;
}

.footer-contact i {
    color: var(--primary);
    margin-top: 4px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 24px 0;
}

.footer-bottom .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    font-size: 0.9rem;
}

.footer-bottom i.fa-heart {
    color: var(--error);
}

/* ==========================================
   WhatsApp Float Button
   ========================================== */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #25D366;
    border-radius: 50%;
    color: var(--white);
    font-size: 1.8rem;
    box-shadow: var(--shadow-lg);
    z-index: 999;
    transition: var(--transition-normal);
    animation: pulse 2s infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 10px 30px rgba(37, 211, 102, 0.4);
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.4); }
    50% { box-shadow: 0 0 0 15px rgba(37, 211, 102, 0); }
}

/* ==========================================
   Back to Top Button
   ========================================== */
.back-to-top {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    border: none;
    border-radius: 50%;
    color: var(--white);
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition-normal);
    z-index: 998;
}

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

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

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 1200px) {
    .hero h1 {
        font-size: 3rem;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .diff-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        flex-direction: column;
        background: var(--dark-blue);
        padding: 100px 30px 30px;
        gap: 0;
        transition: var(--transition-normal);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-link {
        width: 100%;
        padding: 15px 20px;
        color: var(--white);
    }
    
    .nav-cta {
        margin-left: 0;
        margin-top: 20px;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-description {
        margin: 0 auto 32px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-image {
        display: none;
    }
    
    .sobre-content {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
    
    .contato-wrapper {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px 0;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .diff-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-box {
        flex-direction: column;
        text-align: center;
        gap: 24px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-about {
        text-align: center;
    }
    
    .footer-social,
    .social-links {
        justify-content: center;
    }
    
    .footer-bottom .container {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    
    .experience-badge {
        position: relative;
        bottom: auto;
        right: auto;
        margin-top: -60px;
        margin-left: auto;
        margin-right: 20px;
        width: fit-content;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn-lg {
        padding: 14px 28px;
    }
    
    .service-card {
        padding: 30px 24px;
    }
    
    .contato-form {
        padding: 30px 24px;
    }
    
    .whatsapp-float {
        bottom: 20px;
        right: 20px;
        width: 55px;
        height: 55px;
    }
    
    .back-to-top {
        bottom: 85px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

/* ==========================================
   Utility Classes
   ========================================== */
.text-white { color: var(--white); }
.text-primary { color: var(--primary); }
.text-center { text-align: center; }
.mb-0 { margin-bottom: 0; }
.mt-4 { margin-top: 1rem; }
.hidden { display: none; }