/**
 * CAT Contabilidade - Stylesheet Principal
 * Design Profissional e Responsivo
 */

/* ========================================
   1. RESET E VARIÁVEIS
   ======================================== */
:root {
    --primary-color: #1a3a52;
    --secondary-color: #d4af37;
    --text-dark: #2c3e50;
    --text-light: #6c757d;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-color: #e0e0e0;
    --shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 5px 30px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
    --font-primary: 'Poppins', sans-serif;
    --font-heading: 'Playfair Display', serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

/* ========================================
   2. UTILITÁRIOS
   ======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.btn-primary {
    display: inline-block;
    padding: 12px 30px;
    background: var(--secondary-color);
    color: var(--bg-white);
    font-weight: 600;
    border-radius: 5px;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    text-align: center;
}

.btn-primary:hover {
    background: #c19b2f;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    display: inline-block;
    padding: 12px 30px;
    background: transparent;
    color: var(--primary-color);
    font-weight: 600;
    border: 2px solid var(--primary-color);
    border-radius: 5px;
    transition: var(--transition);
}

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

.section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
    text-align: center;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px;
}

/* ========================================
   3. HEADER E NAVEGAÇÃO
   ======================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--bg-white);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.site-header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
}

.navbar {
    padding: 15px 0;
}

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

.logo img {
    height: 50px;
    width: auto;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-menu li {
    position: relative;
}

.nav-menu a {
    font-weight: 500;
    color: var(--text-dark);
    padding: 8px 0;
    display: inline-block;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--secondary-color);
}

/* Dropdown Menu */
.dropdown {
    position: relative;
}

.dropdown > a i {
    font-size: 0.8rem;
    margin-left: 5px;
    transition: var(--transition);
}

.dropdown:hover > a i {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--bg-white);
    box-shadow: var(--shadow-lg);
    border-radius: 8px;
    min-width: 280px;
    padding: 15px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    padding: 0;
}

.dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: var(--text-dark);
}

.dropdown-menu a:hover {
    background: var(--bg-light);
    color: var(--primary-color);
}

.dropdown-menu i {
    color: var(--secondary-color);
    font-size: 1.1rem;
}

/* Menu Toggle (Mobile) */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

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

/* ========================================
   4. HERO SECTION
   ======================================== */
.hero {
    margin-top: 80px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #2c5f7f 100%);
    color: var(--bg-white);
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.05" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,154.7C960,171,1056,181,1152,165.3C1248,149,1344,107,1392,85.3L1440,64L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: 3rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero h1 span {
    color: var(--secondary-color);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.95;
}

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

/* ========================================
   5. STATS SECTION
   ======================================== */
.stats {
    background: var(--bg-light);
    padding: 60px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    text-align: center;
}

.stat-item {
    padding: 20px;
}

.stat-item i {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.stat-label {
    font-size: 1rem;
    color: var(--text-light);
    font-weight: 500;
}

/* ========================================
   6. SERVICES SECTION
   ======================================== */
.services {
    padding: 80px 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.service-card {
    background: var(--bg-white);
    padding: 40px 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

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

.service-card i {
    font-size: 3.5rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.service-card p {
    color: var(--text-light);
    margin-bottom: 20px;
}

.service-card a {
    color: var(--primary-color);
    font-weight: 600;
}

.service-card a:hover {
    color: var(--secondary-color);
}

/* ========================================
   7. ABOUT SECTION
   ======================================== */
.about {
    padding: 80px 0;
    background: var(--bg-light);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h2 {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-features {
    display: grid;
    gap: 15px;
    margin-top: 30px;
}

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

.feature-item i {
    color: var(--secondary-color);
    font-size: 1.5rem;
}

.about-image {
    position: relative;
}

.about-image img {
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
}

/* ========================================
   8. CTA SECTION
   ======================================== */
.cta {
    background: linear-gradient(135deg, var(--primary-color) 0%, #2c5f7f 100%);
    color: var(--bg-white);
    padding: 80px 0;
    text-align: center;
}

.cta h2 {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.cta p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.95;
}

/* ========================================
   9. CONTACT SECTION
   ======================================== */
.contact {
    padding: 80px 0;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-top: 50px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.contact-item i {
    font-size: 2rem;
    color: var(--secondary-color);
    margin-top: 5px;
}

.contact-item h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.contact-item p {
    color: var(--text-light);
}

.contact-form {
    background: var(--bg-light);
    padding: 40px;
    border-radius: 10px;
}

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

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

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

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26, 58, 82, 0.1);
}

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

.alert {
    padding: 15px 20px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* ========================================
   10. FOOTER
   ======================================== */
.site-footer {
    background: var(--primary-color);
    color: var(--bg-white);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-column h3 {
    color: var(--secondary-color);
    margin-bottom: 20px;
    font-size: 1.3rem;
}

.footer-logo {
    max-width: 200px;
    margin-bottom: 20px;
    filter: brightness(0) invert(1);
}

.footer-description {
    opacity: 0.9;
    line-height: 1.8;
    margin-bottom: 20px;
}

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

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

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

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

.footer-links a {
    opacity: 0.9;
    transition: var(--transition);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--secondary-color);
    padding-left: 5px;
}

.footer-contact li {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
    align-items: flex-start;
}

.footer-contact i {
    color: var(--secondary-color);
    margin-top: 3px;
}

.footer-contact a {
    opacity: 0.9;
}

.footer-contact a:hover {
    opacity: 1;
    color: var(--secondary-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
}

.footer-info {
    margin-bottom: 20px;
    opacity: 0.9;
}

.footer-info p {
    margin-bottom: 5px;
}

.copyright {
    opacity: 0.8;
    font-size: 0.9rem;
}

/* ========================================
   11. BACK TO TOP BUTTON
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--secondary-color);
    color: var(--bg-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    z-index: 999;
}

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

.back-to-top.show {
    display: flex;
}

/* ========================================
   12. RESPONSIVE
   ======================================== */
@media (max-width: 992px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--bg-white);
        flex-direction: column;
        align-items: flex-start;
        padding: 30px;
        gap: 20px;
        transition: var(--transition);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding-left: 20px;
        display: none;
    }
    
    .dropdown.active .dropdown-menu {
        display: block;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .about-content,
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 60px 0;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .section-title {
        font-size: 1.8rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}