/* Base Styles */
:root {
    /* Cores principais */
    --primary-color: #0077b6;
    --secondary-color: #48cae4;
    --accent-color: #fb8500;
    --text-color: #333333;
    --text-light: #666666;
    --bg-color: #ffffff;
    --bg-light: #f8f9fa;
    --bg-dark: #212529;
    
    /* Fontes */
    --font-primary: 'Montserrat', sans-serif;
    --font-secondary: 'Playfair Display', serif;
    
    /* Tamanhos */
    --container-width: 1200px;
    --header-height: 80px;
    --section-padding: 100px 0;
    
    /* Transições */
    --transition: all 0.3s ease;
}

/* Dark Mode */
.dark-mode {
    --text-color: #f8f9fa;
    --text-light: #e9ecef;
    --bg-color: #121212;
    --bg-light: #1e1e1e;
    --bg-dark: #000000;
}

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

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

body {
    font-family: var(--font-primary);
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.6;
    overflow-x: hidden;
    transition: var(--transition);
}

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

a:hover {
    color: var(--accent-color);
}

ul {
    list-style: none;
}

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

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

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    outline: none;
}

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

.btn-primary:hover {
    background-color: var(--accent-color);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.section {
    padding: var(--section-padding);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-family: var(--font-secondary);
    font-size: 2.5rem;
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}

.section-divider {
    width: 80px;
    height: 3px;
    background-color: var(--accent-color);
    margin: 0 auto;
}

.bg-light {
    background-color: var(--bg-light);
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -15px;
    align-items: center;
}

.row.reverse {
    flex-direction: row-reverse;
}

.col {
    flex: 1;
    padding: 0 15px;
}

/* Preloader */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-color);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

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

.loader {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: transparent;
    z-index: 100;
    transition: var(--transition);
}

.header.scrolled {
    background-color: var(--bg-color);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.logo h1 {
    font-family: var(--font-secondary);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
}

.logo span {
    font-size: 0.9rem;
    color: var(--accent-color);
    text-transform: uppercase;
    letter-spacing: 2px;
}

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

.menu {
    display: flex;
}

.menu li {
    margin-left: 30px;
}

.menu li a {
    color: var(--text-color);
    font-weight: 500;
    position: relative;
    padding: 5px 0;
}

.menu li a:hover,
.menu li a.active {
    color: var(--primary-color);
}

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

.menu li a:hover::after,
.menu li a.active::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    margin: 3px 0;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    height: 100vh;
    background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('../images/slide_4_image_1.png');
    background-size: cover;
    background-position: center;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: white;
    position: relative;
}

.hero-content {
    max-width: 800px;
    padding: 0 20px;
}

.hero-content h1 {
    font-family: var(--font-secondary);
    font-size: 4rem;
    margin-bottom: 20px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    text-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
}

.theme-toggle {
    position: absolute;
    top: 100px;
    right: 30px;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: var(--transition);
}

.theme-toggle:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

.theme-toggle i {
    color: white;
    font-size: 1.2rem;
}

/* Image Container */
.image-container {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.image-container:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.image-container img {
    transition: var(--transition);
}

.image-container:hover img {
    transform: scale(1.05);
}

/* Services Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.service-card {
    background-color: var(--bg-color);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    text-align: center;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.service-icon {
    width: 70px;
    height: 70px;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 20px;
}

.service-icon i {
    color: white;
    font-size: 1.5rem;
}

.service-card h3 {
    margin-bottom: 15px;
    font-weight: 600;
}

/* Specialty Items */
.specialty-item {
    margin-bottom: 30px;
}

.specialty-item h3 {
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--primary-color);
}

/* Global Presence Grid */
.global-presence-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.global-presence-item {
    margin-bottom: 20px;
}

.global-presence-item h3 {
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--primary-color);
}

/* Stats Container */
.stats-container {
    display: flex;
    justify-content: space-around;
    margin-top: 40px;
}

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

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.stat-label {
    font-size: 1rem;
    color: var(--text-light);
}

/* Gallery */
.gallery-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    height: 300px;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
    text-align: center;
    color: white;
    opacity: 0;
    transition: var(--transition);
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-overlay h3 {
    margin-bottom: 10px;
}

.differentials-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

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

/* Contact Section */
.contact-info {
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.contact-item i {
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    margin-right: 15px;
}

.contact-images {
    display: flex;
    gap: 20px;
    margin-top: 30px;
}

.contact-images img {
    width: 48%;
    border-radius: 10px;
    transition: var(--transition);
}

.contact-images img:hover {
    transform: scale(1.05);
}

.contact-form {
    background-color: var(--bg-color);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition);
    background-color: var(--bg-color);
    color: var(--text-color);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 119, 182, 0.1);
}

/* Footer */
.footer {
    background-color: var(--bg-dark);
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.footer-logo h3 {
    font-family: var(--font-secondary);
    font-size: 1.8rem;
    margin-bottom: 5px;
}

.footer-social {
    display: flex;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    margin-left: 10px;
    transition: var(--transition);
}

.footer-social a:hover {
    background-color: var(--primary-color);
    transform: translateY(-5px);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

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

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

/* Responsive Styles */
@media screen and (max-width: 1024px) {
    :root {
        --section-padding: 80px 0;
    }
    
    .hero-content h1 {
        font-size: 3.5rem;
    }

    /* O menu horizontal com 8 itens não cabe bem em tablets,
       por isso o menu em hambúrguer passa a ativar-se já aqui */
    .menu-toggle {
        display: flex;
    }

    .menu {
        position: fixed;
        top: var(--header-height);
        left: -100%;
        width: 80%;
        max-width: 320px;
        height: calc(100vh - var(--header-height));
        background-color: var(--bg-color);
        flex-direction: column;
        align-items: flex-start;
        padding: 40px 20px;
        transition: var(--transition);
        box-shadow: 5px 0 15px rgba(0, 0, 0, 0.1);
        overflow-y: auto;
    }

    .menu.active {
        left: 0;
    }

    .menu li {
        margin: 0 0 20px;
        width: 100%;
    }

    .menu li a {
        display: block;
        padding: 10px 0;
    }
}

@media screen and (max-width: 768px) {
    :root {
        --header-height: 70px;
        --section-padding: 60px 0;
    }

    .row {
        flex-direction: column;
    }
    
    .row.reverse {
        flex-direction: column;
    }
    
    .col {
        margin-bottom: 30px;
    }
    
    .hero-content h1 {
        font-size: 3rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .stats-container {
        flex-direction: column;
        gap: 30px;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-social {
        margin-top: 20px;
    }
}

@media screen and (max-width: 480px) {
    :root {
        --section-padding: 50px 0;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .btn {
        padding: 10px 25px;
    }
    
    .section-header h2 {
        font-size: 1.8rem;
    }
    
    .gallery-container {
        grid-template-columns: 1fr;
    }
    
    .contact-images {
        flex-direction: column;
    }
    
    .contact-images img {
        width: 100%;
        margin-bottom: 20px;
    }
}