/* ========================================
   CFI Consultoria Contábil - CSS Principal
   Otimizado para Performance e Acessibilidade
   ======================================== */

/* === RESET E VARIÁVEIS === */
:root {
    --color-primary: #1a3a5c;
    --color-secondary: #d4af37;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-bg: #ffffff;
    --color-bg-light: #f9f9f9;
    --color-border: #e0e0e0;
    --color-success: #28a745;
    --color-error: #dc3545;
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Playfair Display', Georgia, serif;
    --transition: all 0.3s ease;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-hover: 0 4px 20px rgba(0,0,0,0.15);
}

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

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

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

/* === TIPOGRAFIA === */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--color-primary);
}

h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); }

p { margin-bottom: 1rem; }

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

a:hover, a:focus {
    color: var(--color-secondary);
    outline: 2px solid var(--color-secondary);
    outline-offset: 2px;
}

/* === CONTAINER === */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* === HEADER === */
.site-header {
    background-color: var(--color-bg);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

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

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.main-nav a {
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 4px;
}

.main-nav a.active,
.main-nav a:hover {
    background-color: var(--color-primary);
    color: #fff;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

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

/* === HERO === */
.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    color: #fff;
    overflow: hidden;
}

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

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

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(26,58,92,0.95) 0%, rgba(26,58,92,0.7) 100%);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    max-width: 800px;
}

.hero h1 {
    color: #fff;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

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

/* === BUTTONS === */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-weight: 600;
    text-align: center;
    border-radius: 4px;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background-color: #c29d2e;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.btn-secondary {
    background-color: transparent;
    color: #fff;
    border-color: #fff;
}

.btn-secondary:hover {
    background-color: #fff;
    color: var(--color-primary);
}

.btn-large {
    padding: 1.125rem 2.5rem;
    font-size: 1.125rem;
}

/* === SECTIONS === */
section {
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    margin-bottom: 1rem;
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-light);
    max-width: 700px;
    margin: 0 auto 3rem;
    font-size: 1.125rem;
}

.page-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, #2a4a6c 100%);
    color: #fff;
    padding: 3rem 0;
    text-align: center;
}

.page-header h1 {
    color: #fff;
}

.page-subtitle {
    font-size: 1.125rem;
    opacity: 0.9;
}

/* === CREDIBILIDADE === */
.credibility {
    background-color: var(--color-bg-light);
}

.credibility-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.credibility-item {
    text-align: center;
    padding: 2rem;
    background-color: var(--color-bg);
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.credibility-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.credibility-icon {
    color: var(--color-secondary);
    margin-bottom: 1rem;
}

.credibility-item h3 {
    margin-bottom: 0.75rem;
}

/* === SERVIÇOS === */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    padding: 2rem;
    background-color: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: 8px;
    transition: var(--transition);
}

.service-card:hover {
    border-color: var(--color-secondary);
    box-shadow: var(--shadow-hover);
}

.service-card h3 {
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.services-cta {
    text-align: center;
    margin-top: 3rem;
}

.service-detail {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--color-border);
}

.service-icon {
    flex-shrink: 0;
    color: var(--color-secondary);
}

.service-text ul {
    margin-left: 1.5rem;
    margin-top: 0.5rem;
}

.service-text li {
    margin-bottom: 0.5rem;
}

.service-disclaimer {
    background-color: #fff3cd;
    padding: 1rem;
    border-left: 4px solid #ffc107;
    margin-top: 1rem;
}

.services-disclaimer {
    background-color: var(--color-bg-light);
    padding: 2rem;
    border-radius: 8px;
    margin-top: 3rem;
}

/* === CTA SECTION === */
.cta-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, #2a4a6c 100%);
    color: #fff;
    text-align: center;
}

.cta-content h2 {
    color: #fff;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

/* === ABOUT === */
.about-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    margin-bottom: 4rem;
}

.about-image img {
    width: 100%;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.mvv-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.mvv-item {
    background-color: var(--color-bg-light);
    padding: 2rem;
    border-radius: 8px;
}

.mvv-item h3 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.mvv-item svg {
    color: var(--color-secondary);
}

.mvv-item ul {
    margin-left: 1.5rem;
}

.mvv-item li {
    margin-bottom: 0.5rem;
}

.technical-card {
    display: flex;
    gap: 2rem;
    background-color: var(--color-bg-light);
    padding: 2rem;
    border-radius: 8px;
    align-items: center;
}

.technical-icon {
    flex-shrink: 0;
    color: var(--color-secondary);
}

.compliance-list {
    margin-left: 1.5rem;
}

.compliance-list li {
    margin-bottom: 0.75rem;
}

/* === CONTACT === */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.contact-info-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.contact-info-icon {
    flex-shrink: 0;
    color: var(--color-secondary);
}

.contact-info-item h3 {
    margin-bottom: 0.5rem;
    font-size: 1.125rem;
}

/* === FORMS === */
.contact-form {
    background-color: var(--color-bg-light);
    padding: 2rem;
    border-radius: 8px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-primary);
}

.required {
    color: var(--color-error);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--color-border);
    border-radius: 4px;
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition);
}

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

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin-top: 0.25rem;
}

.form-note {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.alert {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1.5rem;
}

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

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

.map-container {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

/* === LEGAL === */
.legal-content {
    padding: 3rem 0;
}

.legal-text {
    max-width: 900px;
    margin: 0 auto;
}

.legal-intro {
    font-size: 1.125rem;
    background-color: var(--color-bg-light);
    padding: 1.5rem;
    border-left: 4px solid var(--color-secondary);
    margin-bottom: 2rem;
}

.legal-update {
    font-style: italic;
    color: var(--color-text-light);
    margin-bottom: 2rem;
}

.legal-text h2 {
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.legal-text ul {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.legal-text li {
    margin-bottom: 0.5rem;
}

/* === FOOTER === */
.site-footer {
    background-color: var(--color-primary);
    color: #fff;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-col h3 {
    color: var(--color-secondary);
    margin-bottom: 1rem;
}

.footer-col ul {
    list-style: none;
}

.footer-col li {
    margin-bottom: 0.5rem;
}

.footer-col a {
    color: #fff;
}

.footer-col a:hover {
    color: var(--color-secondary);
}

.contact-info {
    list-style: none;
}

.contact-info li {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.contact-info svg {
    flex-shrink: 0;
    margin-top: 0.25rem;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.2);
    padding-top: 1.5rem;
    text-align: center;
}

.footer-disclaimer {
    font-size: 0.875rem;
    opacity: 0.8;
    margin-top: 0.5rem;
}

/* === 404 === */
.error-404 {
    text-align: center;
    padding: 5rem 0;
}

.error-code {
    font-size: 8rem;
    color: var(--color-secondary);
    margin-bottom: 1rem;
}

.error-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin: 2rem 0;
}

.error-links {
    margin-top: 3rem;
}

.error-links ul {
    list-style: none;
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--color-bg);
        flex-direction: column;
        padding: 1rem;
        box-shadow: var(--shadow);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .hero {
        min-height: 500px;
    }
    
    .about-intro,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .service-detail {
        flex-direction: column;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* === ACESSIBILIDADE === */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border-width: 0;
}

:focus-visible {
    outline: 2px solid var(--color-secondary);
    outline-offset: 2px;
}

/* === PERFORMANCE === */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}