/* ============================================
   PGR BRASIL - UNIFIED LIGHT THEME
   Design System for Landing Page + Blog
   ============================================ */

:root {
    /* Brand Colors */
    --primary-blue: #0B3C6F;
    --primary-blue-light: #1565C0;
    --primary-green: #2E7D32;
    --primary-green-light: #43A047;
    --accent-gold: #F2C200;
    --accent-gold-light: #FFD54F;
    
    /* Light Theme Backgrounds */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8FAFC;
    --bg-tertiary: #F1F5F9;
    
    /* Text Colors */
    --text-primary: #1E293B;
    --text-secondary: #475569;
    --text-muted: #64748B;
    --text-white: #FFFFFF;
    
    /* Semantic Colors */
    --danger-red: #DC2626;
    --warning-orange: #F59E0B;
    --success-green: #16A34A;
    --info-blue: #0284C7;
    
    /* Gradients */
    --gradient-blue: linear-gradient(135deg, #0B3C6F 0%, #1565C0 100%);
    --gradient-green: linear-gradient(135deg, #2E7D32 0%, #43A047 100%);
    --gradient-gold: linear-gradient(135deg, #F2C200 0%, #FFD54F 100%);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
    --shadow-green: 0 4px 15px rgba(46, 125, 50, 0.3);
    --shadow-gold: 0 4px 20px rgba(242, 194, 0, 0.3);
    
    /* Typography */
    --font-primary: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-full: 50px;
    
    /* Container */
    --container-max: 1200px;
}

/* ============================================
   RESET & BASE
   ============================================ */

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

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

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

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

a {
    color: var(--primary-green);
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: var(--primary-green-light);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

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

h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
}

h2 {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.5rem);
}

p {
    margin-bottom: var(--space-md);
    color: var(--text-secondary);
}

.text-gold { color: var(--accent-gold); }
.text-green { color: var(--primary-green); }
.text-muted { color: var(--text-muted); }
.text-center { text-align: center; }
.mb-4 { margin-bottom: var(--space-xl); }

/* ============================================
   LAYOUT
   ============================================ */

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

section {
    padding: var(--space-4xl) var(--space-xl);
}

/* ============================================
   HEADER (Shared Light Theme)
   ============================================ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    padding: var(--space-md) var(--space-xl);
    transition: all 0.3s;
}

.header.scrolled {
    padding: var(--space-sm) var(--space-xl);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.12);
}

.header-content {
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    height: 44px;
    width: auto;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav-links a {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--primary-green);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
    background: none;
    border: none;
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.75rem 1.5rem;
    font-family: var(--font-primary);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-green);
    color: var(--text-white) !important;
    box-shadow: var(--shadow-green);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(46, 125, 50, 0.4);
    color: var(--text-white);
}


.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--bg-tertiary);
}

.btn-secondary:hover {
    border-color: var(--primary-green);
    color: var(--primary-green);
    background: rgba(46, 125, 50, 0.05);
}

/* User Fix: Button for Dark Backgrounds (Hero) */
.btn-outline-white {
    background: transparent;
    color: var(--text-white) !important;
    border: 2px solid var(--text-white);
}

.btn-outline-white:hover {
    background: var(--text-white);
    color: var(--primary-blue) !important;
    border-color: var(--text-white);
}


.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
    border-radius: var(--radius-md);
}

/* ============================================
   SECTION HEADERS
   ============================================ */

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-tag {
    display: inline-block;
    background: var(--bg-primary);
    color: var(--primary-green);
    border: 1px solid var(--primary-green);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Utilities for Text Stroke/Contrast on Dark Backgrounds */
.text-outline-blue {
     color: white;
     text-shadow: 
         -1px -1px 0 #0B3C6F,  
          1px -1px 0 #0B3C6F,
         -1px  1px 0 #0B3C6F,
          1px  1px 0 #0B3C6F;
}

.text-outline-green {
     color: white;
     text-shadow: 
         -1px -1px 0 #2E7D32,  
          1px -1px 0 #2E7D32,
         -1px  1px 0 #2E7D32,
          1px  1px 0 #2E7D32;
}


.section-tag.gold {
    background: var(--accent-gold);
    color: var(--primary-blue);
}

.section-tag.blue {
    background: var(--primary-blue);
    color: var(--text-white);
}

.section-header h2 {
    margin-bottom: var(--space-md);
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto;
}

/* ============================================
   BREADCRUMB
   ============================================ */

.breadcrumb {
    padding: var(--space-md) 0;
    margin-top: 80px;
    font-size: 0.875rem;
}

.breadcrumb a {
    color: var(--text-muted);
}

.breadcrumb a:hover {
    color: var(--primary-green);
}

.breadcrumb span {
    color: var(--text-muted);
    margin: 0 var(--space-sm);
}

.breadcrumb strong {
    color: var(--text-secondary);
    font-weight: 500;
}

/* ============================================
   ARTICLE / BLOG CONTENT
   ============================================ */

.article-header {
    padding: var(--space-3xl) 0;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.article-header h1 {
    margin-bottom: var(--space-lg);
    color: var(--primary-blue);
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    color: var(--text-muted);
    font-size: 0.9rem;
}

.article-content {
    max-width: 800px;
    margin: 0 auto var(--space-4xl);
    padding: 0 var(--space-xl);
}

.article-content h2 {
    margin: var(--space-3xl) 0 var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--bg-tertiary);
}

.article-content h2:first-of-type {
    border-top: none;
    padding-top: 0;
}

.article-content h3 {
    margin: var(--space-2xl) 0 var(--space-md);
    color: var(--primary-green);
}

.article-content p {
    line-height: 1.8;
    margin-bottom: var(--space-lg);
}

.article-content ul, .article-content ol {
    margin-bottom: var(--space-lg);
    padding-left: var(--space-xl);
}

.article-content li {
    margin-bottom: var(--space-sm);
    color: var(--text-secondary);
}

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

/* Answer Box (highlighted intro) */
.answer-box {
    background: linear-gradient(135deg, rgba(46, 125, 50, 0.08) 0%, rgba(242, 194, 0, 0.05) 100%);
    border-left: 4px solid var(--primary-green);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    padding: var(--space-xl);
    margin-bottom: var(--space-2xl);
}

.answer-box p {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.8;
}

.answer-box strong {
    color: var(--primary-green);
}

/* Tables */
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-xl) 0;
    font-size: 0.95rem;
}

.article-content th,
.article-content td {
    padding: var(--space-md);
    text-align: left;
    border-bottom: 1px solid var(--bg-tertiary);
}

.article-content th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--primary-blue);
}

.article-content tr:hover td {
    background: var(--bg-secondary);
}

/* ============================================
   FAQ ACCORDION
   ============================================ */

.faq-grid {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-primary);
    border: 1px solid var(--bg-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
    overflow: hidden;
    transition: all 0.3s;
}

.faq-item:hover {
    border-color: var(--primary-green);
    box-shadow: var(--shadow-sm);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg) var(--space-xl);
    cursor: pointer;
    transition: background 0.3s;
}

.faq-question:hover {
    background: var(--bg-secondary);
}

.faq-question h3 {
    font-size: 1rem;
    font-weight: 500;
    margin: 0;
    flex: 1;
    padding-right: var(--space-md);
    color: var(--text-primary);
}

.faq-toggle {
    width: 28px;
    height: 28px;
    min-width: 28px;
    border-radius: var(--radius-full);
    background: rgba(46, 125, 50, 0.1);
    border: 1px solid rgba(46, 125, 50, 0.2);
    color: var(--primary-green);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
    transition: all 0.3s;
}

.faq-item.open .faq-toggle {
    background: var(--primary-green);
    color: var(--text-white);
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s;
}

.faq-item.open .faq-answer {
    max-height: 500px;
}

.faq-answer-inner {
    padding: 0 var(--space-xl) var(--space-xl);
}

.faq-answer p {
    color: var(--text-muted);
    line-height: 1.8;
    margin: 0;
}

/* ============================================
   CTA SECTIONS
   ============================================ */

.cta-inline {
    background: var(--gradient-blue);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    margin: var(--space-3xl) 0;
    text-align: center;
}

.cta-inline h3 {
    color: var(--text-white);
    margin-bottom: var(--space-sm);
}

.cta-inline p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-lg);
}

.cta-section {
    background: var(--gradient-green);
    padding: var(--space-4xl) var(--space-xl);
    text-align: center;
}

.cta-section h2 {
    color: var(--text-white);
    margin-bottom: var(--space-md);
}

.cta-section p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   RELATED ARTICLES
   ============================================ */

.related-section {
    background: var(--bg-secondary);
    padding: var(--space-4xl) var(--space-xl);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    max-width: var(--container-max);
    margin: 0 auto;
}

.related-card {
    background: var(--bg-primary);
    border: 1px solid var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    transition: all 0.3s;
    text-decoration: none;
}

.related-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-green);
}

.related-card h4 {
    color: var(--primary-blue);
    margin-bottom: var(--space-sm);
}

.related-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin: 0;
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background: var(--bg-secondary);
    padding: var(--space-3xl) var(--space-xl);
    border-top: 1px solid var(--bg-tertiary);
}

.footer-simple {
    text-align: center;
}

.footer-content {
    max-width: var(--container-max);
    margin: 0 auto;
}

.footer-logo {
    height: 40px;
    margin: 0 auto var(--space-lg);
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: var(--space-md);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
}

.footer-links a {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer-links a:hover {
    color: var(--primary-green);
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 1024px) {
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --space-4xl: 4rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .related-grid {
        grid-template-columns: 1fr;
    }
    
    .article-meta {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .footer-links {
        flex-wrap: wrap;
        gap: var(--space-md);
    }
}

/* ============================================
   UTILITIES
   ============================================ */

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}