/* ========================================
   AD Tech Solutions - Stylesheet
   Versão: 1.0.0
   Autor: AD Tech Solutions
   ======================================== */

/* Variáveis CSS */
:root {
    /* Cores Primárias */
    --primary-blue: #005b9f;
    --primary-dark: #003d6b;
    --primary-light: #e6f2f8;
    
    /* Cores de Destaque */
    --accent-orange: #f26522;
    --accent-dark: #d35400;
    
    /* Cores Neutras */
    --text-primary: #2c3e50;
    --text-secondary: #5a6c7d;
    --text-light: #7f8c8d;
    --bg-white: #ffffff;
    --bg-gray: #f5f7fa;
    --bg-dark: #1a1a1a;
    
    /* Tipografia */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Espaçamentos */
    --section-padding: 6rem;
    --container-max: 1200px;
    
    /* Transições */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Sombras */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.15);
}

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

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

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

/* Tipografia */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

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

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

/* Utilitários */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section-padding {
    padding: var(--section-padding) 0;
}

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

.text-accent {
    color: var(--accent-orange);
}

/* ========================================
   HEADER & NAVEGAÇÃO
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.header.scrolled {
    box-shadow: var(--shadow-lg);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-img {
    height: 50px;
    width: auto;
    border-radius: 8px;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-blue);
    letter-spacing: -0.5px;
}

.logo-subtitle {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-light);
    letter-spacing: 1px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-link {
    font-weight: 600;
    color: var(--text-primary);
    position: relative;
    padding: 0.5rem 0;
}

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

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

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

/* Mobile Menu Toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.hamburger {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--primary-blue);
    position: relative;
    transition: all var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: var(--primary-blue);
    transition: all var(--transition-fast);
}

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

.hamburger::after {
    bottom: -8px;
}

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

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

.nav-toggle.active .hamburger::after {
    bottom: 0;
    transform: rotate(-45deg);
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    margin-top: 80px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-dark) 100%);
    color: var(--bg-white);
    padding: 5rem 0;
    position: relative;
    overflow: hidden;
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
}

.hero-bg-pattern {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background-image: radial-gradient(circle at 20% 50%, rgba(255,255,255,0.1) 0%, transparent 50%),
                      radial-gradient(circle at 80% 80%, rgba(242,101,34,0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.hero-description {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-img {
    max-width: 90%;
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
    animation: float 6s ease-in-out infinite;
}

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

/* ========================================
   BOTÕES
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
    cursor: pointer;
}

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

.btn-primary:hover {
    background: var(--accent-dark);
    border-color: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(242, 101, 34, 0.3);
}

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

.btn-outline:hover {
    background: var(--bg-white);
    color: var(--primary-blue);
    transform: translateY(-2px);
}

/* ========================================
   SECTIONS HEADERS
   ======================================== */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-title {
    font-size: 2.5rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.section-divider {
    width: 80px;
    height: 4px;
    background: var(--accent-orange);
    margin: 0 auto 1.5rem;
    border-radius: 2px;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.6;
}

/* ========================================
   FEATURES
   ======================================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-white);
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border-top: 4px solid var(--primary-blue);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-top-color: var(--accent-orange);
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--accent-orange);
    margin-bottom: 1.5rem;
}

.feature-title {
    font-size: 1.25rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.feature-text {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========================================
   SERVICES
   ======================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--bg-white);
    padding: 3rem 2rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

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

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

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

.service-icon-wrapper {
    width: 80px;
    height: 80px;
    background: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: var(--primary-blue);
    transition: all var(--transition-normal);
}

.service-card:hover .service-icon-wrapper {
    background: var(--accent-orange);
    color: var(--bg-white);
    transform: rotateY(360deg);
}

.service-title {
    font-size: 1.2rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.service-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ========================================
   ABOUT
   ======================================== */
.about-content {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: start;
}

.about-subtitle {
    font-size: 1.5rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.about-subtitle i {
    color: var(--accent-orange);
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
    text-align: justify;
}

.mission-block,
.vision-block {
    margin-bottom: 2rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.stat-card {
    background: var(--primary-light);
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    border-left: 4px solid var(--accent-orange);
}

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

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 0.5rem;
    display: block;
}

/* Sidebar */
.about-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.projects-box {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
}

.sidebar-title {
    font-size: 1.25rem;
    color: var(--primary-blue);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sidebar-title i {
    color: var(--accent-orange);
}

.project-item {
    background: var(--bg-gray);
    border: 2px solid var(--primary-light);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all var(--transition-normal);
}

.project-item:hover {
    border-color: var(--accent-orange);
    transform: translateX(5px);
}

.project-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
    color: var(--primary-blue);
}

.project-header i {
    color: var(--accent-orange);
}

.project-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.project-link {
    color: var(--accent-orange);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: gap var(--transition-normal);
}

.project-link:hover {
    gap: 1rem;
}

.company-badge {
    background: var(--primary-blue);
    color: var(--bg-white);
    padding: 1.25rem;
    border-radius: 12px;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.company-badge i {
    color: var(--accent-orange);
    margin-top: 0.25rem;
}

.company-badge strong {
    display: block;
    margin-bottom: 0.25rem;
}

.company-badge span {
    opacity: 0.9;
    font-size: 0.9rem;
}

.expertise-box {
    background: var(--primary-light);
    padding: 1.5rem;
    border-radius: 12px;
    border-left: 4px solid var(--primary-blue);
}

.expertise-box h4 {
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.expertise-box p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

/* ========================================
   CONTACT
   ======================================== */
.contact {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-blue) 100%);
    color: var(--bg-white);
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: rgba(255,255,255,0.05);
    border-radius: 50%;
    pointer-events: none;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.contact-title {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.contact-subtitle {
    opacity: 0.9;
    font-size: 1.1rem;
    margin-bottom: 3rem;
    line-height: 1.6;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    background: rgba(255,255,255,0.1);
    padding: 1.5rem;
    border-radius: 12px;
    transition: all var(--transition-normal);
}

.contact-item:hover {
    background: rgba(255,255,255,0.15);
    transform: translateX(10px);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--accent-orange);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.contact-details h4 {
    margin-bottom: 0.25rem;
    font-size: 1rem;
}

.contact-details a,
.contact-details p {
    opacity: 0.9;
    font-size: 1.1rem;
}

.contact-details a:hover {
    color: var(--accent-orange);
}

/* WhatsApp Card */
.whatsapp-card {
    background: #25d366;
    color: var(--bg-white);
    padding: 3rem 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.whatsapp-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

.whatsapp-card h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
}

.whatsapp-card p {
    opacity: 0.95;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.btn-whatsapp {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--bg-white);
    color: #25d366;
    padding: 1.25rem 2rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.btn-whatsapp:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.response-time {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
    opacity: 0.9;
    font-size: 0.9rem;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: var(--bg-dark);
    color: var(--bg-white);
    padding: 3rem 0;
}

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

.footer-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-logo {
    height: 40px;
    border-radius: 8px;
}

.footer-brand p {
    opacity: 0.8;
    font-size: 0.9rem;
    line-height: 1.4;
}

.footer-credit {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    opacity: 0.6;
    font-size: 0.9rem;
}

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

/* ========================================
   BACK TO TOP
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--accent-orange);
    color: var(--bg-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-lg);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

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

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

/* ========================================
   ANIMAÇÕES
   ======================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   RESPONSIVIDADE
   ======================================== */
@media (max-width: 1024px) {
    .hero-content,
    .about-content,
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .hero-image {
        display: none;
    }
    
    .hero {
        min-height: auto;
        padding: 4rem 0;
    }
    
    .about-sidebar {
        order: -1;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 4rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--bg-white);
        flex-direction: column;
        padding: 2rem;
        transition: left var(--transition-normal);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
    
    .contact-title {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}