/* ==========================================================================
   MT Engenharia - Modern Responsive Stylesheet
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Variables
   -------------------------------------------------------------------------- */
:root {
    /* Colors */
    --primary: #1a3a6e;
    --primary-dark: #0f2847;
    --primary-light: #2a5298;
    --secondary: #3498db;
    --accent: #00d4aa;
    --success: #25d366;
    --dark: #1a1a2e;
    --dark-light: #2d2d44;
    --gray-900: #212529;
    --gray-800: #343a40;
    --gray-700: #495057;
    --gray-600: #6c757d;
    --gray-500: #adb5bd;
    --gray-400: #ced4da;
    --gray-300: #dee2e6;
    --gray-200: #e9ecef;
    --gray-100: #f8f9fa;
    --white: #ffffff;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    --gradient-dark: linear-gradient(135deg, var(--dark) 0%, var(--primary-dark) 100%);
    --gradient-accent: linear-gradient(135deg, var(--secondary) 0%, var(--accent) 100%);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: 1rem;
    --line-height-base: 1.6;

    /* Spacing */
    --section-padding: 100px;
    --container-max-width: 1200px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.2);

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
}

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

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

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--gray-900);
}

h1 { font-size: clamp(2.5rem, 5vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }

p { margin-bottom: 1rem; }

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

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

ul { list-style: none; }

/* --------------------------------------------------------------------------
   Preloader
   -------------------------------------------------------------------------- */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

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

.loader {
    text-align: center;
}

.loader img {
    width: 120px;
    margin-bottom: 20px;
    animation: pulse 1.5s ease-in-out infinite;
}

.loader-bar {
    width: 200px;
    height: 4px;
    background: var(--gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.loader-bar::after {
    content: '';
    display: block;
    width: 50%;
    height: 100%;
    background: var(--gradient-primary);
    animation: loading 1s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.8; }
}

@keyframes loading {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(300%); }
}

/* --------------------------------------------------------------------------
   Container
   -------------------------------------------------------------------------- */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition-normal);
    text-transform: none;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(26, 58, 110, 0.4);
}

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

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

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

.btn-whatsapp:hover {
    background: #128c7e;
    border-color: #128c7e;
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(37, 211, 102, 0.4);
}

.btn-lg {
    padding: 18px 40px;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
}

/* --------------------------------------------------------------------------
   Header & Navigation
   -------------------------------------------------------------------------- */
#header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition-normal);
}

#header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
}

.navbar {
    padding: 20px 0;
    transition: var(--transition-normal);
}

#header.scrolled .navbar {
    padding: 15px 0;
}

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

.logo img {
    height: 45px;
    transition: var(--transition-normal);
    background: rgba(255, 255, 255, 0.95);
    padding: 8px 15px;
    border-radius: var(--radius-sm);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

#header.scrolled .logo img {
    height: 40px;
    background: transparent;
    padding: 0;
    box-shadow: none;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--white);
    position: relative;
    padding: 5px 0;
}

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

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

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

.nav-link:hover,
.nav-link.active {
    color: var(--accent);
}

#header.scrolled .nav-link:hover,
#header.scrolled .nav-link.active {
    color: var(--primary);
}

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}

.hamburger {
    display: block;
    width: 28px;
    height: 3px;
    background: var(--white);
    position: relative;
    transition: var(--transition-normal);
}

#header.scrolled .hamburger {
    background: var(--primary);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: inherit;
    left: 0;
    transition: var(--transition-normal);
}

.hamburger::before { top: -8px; }
.hamburger::after { top: 8px; }

.nav-toggle.active .hamburger {
    background: transparent;
}

.nav-toggle.active .hamburger::before {
    transform: rotate(45deg);
    top: 0;
    background: var(--primary);
}

.nav-toggle.active .hamburger::after {
    transform: rotate(-45deg);
    top: 0;
    background: var(--primary);
}

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

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-dark);
    z-index: -1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    background-size: 50px 50px;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, transparent 0%, rgba(0,0,0,0.3) 100%);
}

.hero-content {
    text-align: center;
    color: var(--white);
    max-width: 800px;
    padding: 40px 20px;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero h1 {
    color: var(--white);
    margin-bottom: 15px;
    background: linear-gradient(135deg, #fff 0%, #00d4aa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    font-weight: 300;
    margin-bottom: 15px;
    opacity: 0.95;
}

.hero-description {
    font-size: 1.1rem;
    opacity: 0.85;
    max-width: 600px;
    margin: 0 auto 40px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

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

.hero-scroll a {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--white);
    opacity: 0.7;
    font-size: 0.85rem;
    transition: var(--transition-normal);
}

.hero-scroll a:hover {
    opacity: 1;
}

.hero-scroll i {
    margin-top: 10px;
    animation: bounce 2s infinite;
}

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

/* --------------------------------------------------------------------------
   Section Styles
   -------------------------------------------------------------------------- */
section {
    padding: var(--section-padding) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(26, 58, 110, 0.1);
    color: var(--primary);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 15px;
}

.section-header h2 {
    margin-bottom: 15px;
}

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

/* --------------------------------------------------------------------------
   Diferenciais Section
   -------------------------------------------------------------------------- */
.diferenciais {
    background: var(--gray-100);
    padding: 80px 0;
    margin-top: -1px;
}

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

.diferencial-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

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

.diferencial-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    font-size: 2rem;
    color: var(--white);
}

.diferencial-card h3 {
    margin-bottom: 15px;
    color: var(--primary);
}

.diferencial-card p {
    color: var(--gray-600);
    margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   Sobre Section
   -------------------------------------------------------------------------- */
.sobre {
    background: var(--white);
}

.sobre-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.sobre-image {
    position: relative;
}

.image-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.image-placeholder {
    aspect-ratio: 4/3;
    background: var(--gradient-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.image-placeholder i {
    font-size: 5rem;
    margin-bottom: 15px;
    opacity: 0.8;
}

.image-placeholder span {
    font-size: 1.2rem;
    font-weight: 500;
}

.experience-badge {
    position: absolute;
    bottom: -30px;
    right: -30px;
    width: 150px;
    height: 150px;
    background: var(--gradient-accent);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--white);
    box-shadow: var(--shadow-lg);
    border: 5px solid var(--white);
}

.experience-badge .number {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
}

.experience-badge .text {
    font-size: 0.85rem;
    text-align: center;
    line-height: 1.3;
}

.sobre-content .lead {
    font-size: 1.15rem;
    color: var(--gray-800);
}

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

.sobre-stats {
    display: flex;
    gap: 40px;
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid var(--gray-200);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 15px;
}

.stat-item i {
    font-size: 2.5rem;
    color: var(--primary);
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    color: var(--gray-600);
}

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

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

.servico-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    border: 2px solid transparent;
}

.servico-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.servico-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(26, 58, 110, 0.1);
    border-radius: 50%;
    font-size: 1.8rem;
    color: var(--primary);
    transition: var(--transition-normal);
}

.servico-card:hover .servico-icon {
    background: var(--gradient-primary);
    color: var(--white);
}

.servico-card h3 {
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.servico-card p {
    color: var(--gray-600);
    font-size: 0.95rem;
    margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   Parceiros Section
   -------------------------------------------------------------------------- */
.parceiros {
    background: var(--white);
}

.parceiros-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    max-width: 900px;
    margin: 0 auto;
}

.parceiro-card {
    background: var(--gray-100);
    padding: 40px;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition-normal);
}

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

.parceiro-logo {
    background: var(--white);
    padding: 30px;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 120px;
}


.parceiro-logo img {
    width: min(220px, 100%);
    height: 80px;
    object-fit: contain;
    object-position: center;
}

.parceiro-logo img.logo-aquarius {
    transform: scale(1.75);
}

.parceiro-card h3 {
    margin-bottom: 10px;
    font-size: 1.1rem;
}

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

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

.parceiro-link:hover {
    color: var(--secondary);
}

/* --------------------------------------------------------------------------
   CTA Section
   -------------------------------------------------------------------------- */
.cta {
    background: var(--gradient-dark);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 60%;
    height: 200%;
    background: rgba(255, 255, 255, 0.02);
    transform: rotate(15deg);
}

.cta-content {
    text-align: center;
    color: var(--white);
    position: relative;
    z-index: 1;
}

.cta h2 {
    color: var(--white);
    margin-bottom: 15px;
}

.cta p {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 30px;
}

/* --------------------------------------------------------------------------
   Contato Section
   -------------------------------------------------------------------------- */
.contato {
    background: var(--gray-100);
}

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

.contato-info {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.info-card {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    background: var(--white);
    padding: 25px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.info-icon {
    width: 50px;
    height: 50px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 50%;
    color: var(--white);
    font-size: 1.2rem;
}

.info-content h4 {
    font-size: 1rem;
    margin-bottom: 8px;
    color: var(--primary);
}

.info-content p {
    margin: 0;
    color: var(--gray-600);
    line-height: 1.6;
}

.info-content a {
    color: var(--gray-700);
}

.info-content a:hover {
    color: var(--primary);
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 10px;
}

.social-links a {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
    border-radius: 50%;
    color: var(--primary);
    font-size: 1.1rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

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

/* Contact Form */
.contato-form {
    background: var(--white);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--gray-700);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition-fast);
    background: var(--gray-100);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--white);
}

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

/* Map */
.mapa-section {
    padding: 0;
    line-height: 0;
}

.mapa-section iframe {
    display: block;
    width: 100%;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
    background: var(--dark);
    color: var(--gray-400);
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    height: 60px;
    margin-bottom: 20px;
    background: var(--white);
    padding: 12px 20px;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.footer-brand p {
    max-width: 300px;
    line-height: 1.7;
}

.footer h4 {
    color: var(--white);
    font-size: 1.1rem;
    margin-bottom: 25px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: var(--gray-400);
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--white);
    padding-left: 5px;
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
}

.footer-contact i {
    color: var(--accent);
}

.footer-bottom {
    padding: 25px 0;
    text-align: center;
    font-size: 0.9rem;
}

.footer-bottom a {
    color: var(--accent);
    font-weight: 600;
    transition: var(--transition-fast);
}

.footer-bottom a:hover {
    color: var(--white);
    text-decoration: underline;
}

/* --------------------------------------------------------------------------
   WhatsApp Float Button
   -------------------------------------------------------------------------- */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: var(--success);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.5);
    z-index: 999;
    transition: var(--transition-normal);
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(37, 211, 102, 0.6);
}

.whatsapp-tooltip {
    position: absolute;
    right: 75px;
    background: var(--dark);
    color: var(--white);
    padding: 10px 15px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-fast);
}

.whatsapp-tooltip::after {
    content: '';
    position: absolute;
    right: -8px;
    top: 50%;
    transform: translateY(-50%);
    border: 4px solid transparent;
    border-left-color: var(--dark);
}

.whatsapp-float:hover .whatsapp-tooltip {
    opacity: 1;
    visibility: visible;
}

/* Pulse animation */
.whatsapp-float::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: var(--success);
    border-radius: 50%;
    animation: whatsapp-pulse 2s infinite;
    z-index: -1;
}

@keyframes whatsapp-pulse {
    0% {
        transform: scale(1);
        opacity: 0.5;
    }
    100% {
        transform: scale(1.5);
        opacity: 0;
    }
}

/* --------------------------------------------------------------------------
   Back to Top Button
   -------------------------------------------------------------------------- */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 110px;
    width: 50px;
    height: 50px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: 998;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}

/* --------------------------------------------------------------------------
   Responsive Styles
   -------------------------------------------------------------------------- */

/* Tablets */
@media (max-width: 992px) {
    :root {
        --section-padding: 80px;
    }

    .diferenciais-grid,
    .servicos-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .sobre-grid {
        gap: 50px;
    }

    .contato-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
    }

    /* Mobile Navigation */
    .nav-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        max-width: 320px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        justify-content: center;
        gap: 30px;
        padding: 40px;
        box-shadow: var(--shadow-xl);
        transition: var(--transition-normal);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-link {
        color: var(--gray-700);
        font-size: 1.2rem;
    }

    .hero-content {
        padding: 60px 20px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-scroll {
        display: none;
    }

    .diferenciais-grid,
    .servicos-grid {
        grid-template-columns: 1fr;
    }

    .sobre-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .sobre-image {
        order: -1;
    }

    .experience-badge {
        width: 120px;
        height: 120px;
        bottom: -20px;
        right: -10px;
    }

    .experience-badge .number {
        font-size: 2rem;
    }

    .sobre-stats {
        flex-direction: column;
        gap: 20px;
    }

    .parceiros-grid {
        grid-template-columns: 1fr;
    }

    .contato-form {
        padding: 30px 20px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand p {
        max-width: 100%;
    }

    .whatsapp-float {
        bottom: 20px;
        right: 20px;
        width: 55px;
        height: 55px;
        font-size: 1.8rem;
    }

    .whatsapp-tooltip {
        display: none;
    }

    .back-to-top {
        right: 90px;
        width: 45px;
        height: 45px;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    h1 { font-size: 2.2rem; }
    h2 { font-size: 1.8rem; }

    .btn {
        padding: 12px 24px;
        font-size: 0.95rem;
    }

    .diferencial-card,
    .servico-card {
        padding: 30px 20px;
    }

    .info-card {
        flex-direction: column;
        text-align: center;
    }

    .info-icon {
        margin: 0 auto;
    }

    .social-links {
        justify-content: center;
    }
}

/* Print Styles */
@media print {
    #header,
    .whatsapp-float,
    .back-to-top,
    .hero-scroll {
        display: none;
    }

    body {
        font-size: 12pt;
        color: #000;
    }

    section {
        page-break-inside: avoid;
    }
}