:root {
    /* Colors personalized for Estrutuart logo */
    --color-primary: #0f172a;    /* Dark Blue Slate */
    --color-primary-light: #1e293b;
    --color-accent: #facc15;     /* Yellow from logo */
    --color-accent-hover: #eab308;
    --color-accent-secondary: #707b22; /* Olive Green check from screenshot */
    --color-base: #ffffff;
    --color-bg-light: #f5f5f5;   /* Light gray standard for airy feel */
    --color-text: #4a4a4a;
    --color-text-dark: #1a1a1a;
    --color-text-muted: #888888;
    
    /* Typography */
    --font-heading: 'Inter', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Variables */
    --nav-height: 90px;
    --border-radius: 4px;
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 2px 10px rgba(0,0,0,0.03);
    --shadow: 0 10px 30px rgba(0,0,0,0.08);
    --shadow-lg: 0 20px 40px rgba(0,0,0,0.12);
}

/* Reset & Base Styles */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-body);
    font-size: 16px;
    color: var(--color-text);
    background-color: var(--color-bg-light); /* Off-white body */
    line-height: 1.7;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-text-dark);
    line-height: 1.2;
    font-weight: 700;
}

a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: 1240px; margin: 0 auto; padding: 0 1.5rem; }
.text-center { text-align: center; }
.text-left { text-align: left; }
.mt-4 { margin-top: 1.5rem; }
.mb-4 { margin-bottom: 1.5rem; }
.pt-4 { padding-top: 1.5rem; }
.bg-light { background-color: var(--color-bg-light); }
.bg-white { background-color: var(--color-base); }
.bg-dark { background-color: var(--color-primary); color: white; }
.bg-dark h2 { color: white; }
.text-primary { color: var(--color-primary); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-primary { background-color: var(--color-accent); color: var(--color-primary-light); }
.btn-primary:hover { background-color: var(--color-accent-hover); transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-outline { background-color: transparent; color: white; border-color: white; }
.btn-outline:hover { background-color: white; color: var(--color-primary); }
.btn-outline-dark { background-color: transparent; color: var(--color-primary); border-color: var(--color-primary); }
.btn-outline-dark:hover { background-color: var(--color-primary); color: white; }
.btn-outline-cta { background-color: transparent; color: var(--color-accent); border-color: var(--color-accent); padding: 0.6rem 1.5rem; }
.btn-outline-cta:hover { background-color: var(--color-accent); color: var(--color-primary-light); }
.btn-lg { padding: 1.2rem 3rem; font-size: 1.1rem; }
.btn-full { width: 100%; }

/* Utils */
.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; }
.section { padding: 8rem 0; }

.section-header { margin-bottom: 4rem; max-width: 700px; margin-left: auto; margin-right: auto; position: relative; }
.section-header h2 { font-size: 2.8rem; margin-bottom: 1.5rem; }

.subtitle {
    display: inline-block;
    color: var(--color-accent);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.85rem;
    margin-bottom: 1rem;
}

/* Floating WhatsApp */
.floating-whatsapp {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background-color: #25d366;
    color: white;
    width: 65px;
    height: 65px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    transition: var(--transition);
}
.floating-whatsapp svg { width: 34px; height: 34px; }
.floating-whatsapp:hover { background-color: #128c7e; transform: scale(1.1); }

/* Transparent Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    background-color: rgba(15, 23, 42, 1); /* Sólido sempre para evitar bug de stacking no mac safari */
    z-index: 999;
    display: flex;
    align-items: center;
    transition: var(--transition);
}
.navbar.scrolled {
    background-color: rgba(15, 23, 42, 0.98); /* Fundo dark blue em vez de branco */
    box-shadow: var(--shadow-sm);
    height: 80px;
}
.navbar-container { display: flex; justify-content: space-between; align-items: center; width: 100%; }
.logo img { height: 50px; object-fit: contain; transition: transform 0.3s; mix-blend-mode: lighten !important; }
.navbar.scrolled .logo img { transform: scale(0.95); }

.nav-links { display: flex; align-items: center; gap: 2.5rem; }
.nav-links a:not(.btn) {
    font-weight: 600;
    font-size: 0.95rem;
    color: white; /* Sempre branco */
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    transition: color 0.3s;
}
.navbar.scrolled .nav-links a:not(.btn) { color: white; }
.nav-links a:not(.btn):hover { color: var(--color-accent) !important; }

.mobile-menu-btn { display: none; background: none; border: none; cursor: pointer; color: white; }
.navbar.scrolled .mobile-menu-btn { color: white; }

/* Impactful Hero */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    color: white;
    overflow: hidden;
}
.hero-bg {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background-size: cover; background-position: center;
    z-index: -2;
}
.hero-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(17, 17, 17, 0.7);
    z-index: -1;
}
.hero-content {
    max-width: 900px;
    z-index: 1;
    text-align: left;
    padding-top: 100px;
}
.hero h1 {
    font-size: 5rem;
    font-weight: 800;
    color: white;
    margin-bottom: 1.5rem;
    line-height: 1.05;
    text-transform: uppercase;
    letter-spacing: -2px;
}
.hero h1 span { color: var(--color-accent); }
.hero p {
    font-size: 1.3rem;
    margin-bottom: 3rem;
    max-width: 600px;
    color: #e2e8f0;
}
.hero-buttons { display: flex; gap: 1rem; }

/* Subpage Hero */
.page-hero {
    position: relative;
    padding: 12rem 0 6rem;
    background-color: var(--color-primary);
    color: white;
    text-align: center;
    overflow: hidden;
}
.page-hero-bg {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background-size: cover; background-position: center; opacity: 0.2; z-index: 0;
}
.page-hero-content { position: relative; z-index: 1; }
.page-hero h1 { font-size: 4rem; color: white; margin-bottom: 1rem; text-transform: uppercase; }
.page-hero p { font-size: 1.25rem; color: #cbd5e1; max-width: 700px; margin: 0 auto; }

/* Experimental Typography Section (Forraço Style) */
.watermark-section {
    position: relative;
    padding: 10rem 0;
    background-color: var(--color-bg-light);
    text-align: center;
    overflow: hidden;
}
.watermark-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 14vw;
    font-weight: 900;
    color: rgba(0,0,0,0.03);
    white-space: nowrap;
    z-index: 0;
    pointer-events: none;
    letter-spacing: 5px;
}
.watermark-section h2 {
    position: relative;
    z-index: 1;
    font-size: 3rem;
    max-width: 800px;
    margin: 0 auto;
    font-weight: 700;
    color: var(--color-primary);
}

/* Overlapping Image Blocks (Forraço Value Proposition) */
.overlap-block {
    position: relative;
    padding: 6rem 0;
    min-height: 600px;
    background-color: var(--color-bg-light);
}
.overlap-img {
    position: absolute;
    top: 0;
    right: 0;
    width: 65%;
    height: 100%;
    background-size: cover;
    background-position: center;
    z-index: 0;
}
.overlap-img.left {
    right: auto;
    left: 0;
}
.overlap-container {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    height: 100%;
    min-height: inherit;
}
.overlap-card {
    background-color: var(--color-base);
    padding: 5rem 4rem;
    max-width: 550px;
    box-shadow: var(--shadow-lg);
    position: relative;
}
.overlap-card.push-right { margin-left: auto; }

/* The olive dash accent */
.dash-accent {
    position: absolute;
    left: -40px;
    top: 6rem;
    width: 80px;
    height: 2px;
    background-color: var(--color-accent-secondary);
}
.overlap-card h3 { font-size: 2.2rem; margin-bottom: 1.5rem; text-transform: uppercase; }
.overlap-card p { font-size: 1.1rem; color: var(--color-text); margin-bottom: 2rem; line-height: 1.8; }

/* Grid Services (3 cols) */
.services-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
}
.service-box {
    background: var(--color-base);
    padding: 3rem;
    border: 1px solid #eaeaea;
    transition: var(--transition);
}
.service-box:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
    transform: translateY(-5px);
}
.service-icon {
    width: 60px; height: 60px;
    border-radius: 50%;
    background-color: rgba(163, 98, 36, 0.1);
    color: var(--color-accent);
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 1.5rem;
}
.service-icon svg { width: 30px; height: 30px; }
.service-box h3 { font-size: 1.4rem; margin-bottom: 1rem; text-transform: uppercase; }
.service-box p { color: var(--color-text-muted); line-height: 1.7; }

/* Dark CTA Section */
.dark-cta {
    background-color: var(--color-primary);
    padding: 8rem 0;
    text-align: center;
    color: white;
}
.dark-cta h2 { color: var(--color-accent); font-size: 3.5rem; margin-bottom: 1.5rem; text-transform: uppercase; }
.dark-cta p { color: #cccccc; font-size: 1.25rem; max-width: 700px; margin: 0 auto 3rem; }

/* Testimonials - Clean Cards */
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.test-box { background: var(--color-base); padding: 3rem; box-shadow: var(--shadow); border-bottom: 4px solid var(--color-accent); }
.test-box p { font-style: italic; margin-bottom: 2rem; color: var(--color-text-dark); font-size: 1.1rem; }
.test-author h4 { font-size: 1.1rem; color: var(--color-primary); }
.test-author span { color: var(--color-text-muted); font-size: 0.9rem; text-transform: uppercase; letter-spacing: 1px; }

/* Footer */
.footer { background: var(--color-primary); color: white; padding-top: 5rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 4rem; margin-bottom: 4rem; }
.footer-col h4 { color: white; font-size: 1.25rem; margin-bottom: 1.5rem; text-transform: uppercase; letter-spacing: 1px; }
.brand-col p { margin-bottom: 1.5rem; color: rgba(255,255,255,0.9); }
.brand-col .flex {
    gap: 1.5rem; /* Espaçamento entre os ícones soltos */
}
.brand-col .flex a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent !important; /* Sem quadrado */
    border-radius: 0;
    padding: 0;
    transition: transform 0.3s, color 0.3s;
}
.brand-col .flex a:hover {
    background: transparent !important;
    transform: translateY(-3px);
}
.brand-col .flex a i, 
.brand-col .flex a svg {
    width: 26px;
    height: 26px;
    color: white !important;
    stroke: white !important;
    stroke-width: 1.5; /* Traço mais elegante */
}
.brand-col .flex a:hover svg {
    stroke: var(--color-accent) !important;
}
.footer-logo { height: 60px; margin-bottom: 1.5rem; border-radius: 4px; mix-blend-mode: screen; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 1rem; }
.footer-links a { color: rgba(255,255,255,0.8); }
.footer-links a:hover { color: white; padding-left: 5px; }
.footer-contact { list-style: none; }
.footer-contact li { display: flex; gap: 1rem; margin-bottom: 1rem; align-items: flex-start; color: rgba(255,255,255,0.9); }
.footer-contact i { color: white; }

.footer-bottom { background: var(--color-primary-light); padding: 1.5rem 0; font-size: 0.875rem; color: #888888; }

/* ------------------------------------- */
/* INNOVATIVE ABOUT PAGE CLASSES */
/* Blueprint Grid Background */
.bg-blueprint {
    background-color: var(--color-primary);
    background-image: linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
    background-size: 40px 40px;
    color: white;
}

/* Modern Timeline */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 0;
}
.timeline::before {
    content: '';
    position: absolute;
    top: 0; left: 50%; width: 2px; height: 100%;
    background: var(--color-accent);
    transform: translateX(-50%);
}
.timeline-item {
    position: relative;
    width: 50%;
    padding: 2rem 3rem;
    box-sizing: border-box;
}
.timeline-item:nth-child(odd) {
    left: 0;
    text-align: right;
}
.timeline-item:nth-child(even) {
    left: 50%;
    text-align: left;
}
.timeline-dot {
    position: absolute;
    top: 2rem;
    width: 20px; height: 20px;
    border-radius: 50%;
    background: var(--color-accent);
    border: 4px solid var(--color-base);
    z-index: 2;
}
.timeline-item:nth-child(odd) .timeline-dot { right: -10px; }
.timeline-item:nth-child(even) .timeline-dot { left: -10px; }
.timeline-content {
    background: var(--color-base);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--color-accent);
}
.timeline-content h4 { font-size: 1.5rem; color: var(--color-accent); margin-bottom: 0.5rem;}
.timeline-content span { font-weight: 700; color: var(--color-text-muted); font-size: 0.9rem;}

/* Tríade - Horizontal Panels */
.triade-panel {
    display: flex;
    align-items: center;
    background: var(--color-base);
    box-shadow: var(--shadow-lg);
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-bottom: 3rem;
}
.triade-panel:nth-child(even) { flex-direction: row-reverse; }
.triade-letter {
    flex: 0 0 200px; background: var(--color-primary); color: rgba(255,255,255,0.1); 
    font-size: 8rem; font-weight: 900; display: flex; align-items: center; justify-content: center;
    text-shadow: 2px 2px 0 var(--color-accent);
}
.triade-content { padding: 3rem; flex: 1; }
.triade-content h3 { font-size: 2rem; margin-bottom: 1rem; color: var(--color-primary); text-transform: uppercase;}

@media (max-width: 768px) {
    .timeline::before { left: 20px; }
    .timeline-item { width: 100%; padding-left: 50px; padding-right: 0; text-align: left !important; }
    .timeline-item:nth-child(even) { left: 0; }
    .timeline-item:nth-child(odd) .timeline-dot, .timeline-item:nth-child(even) .timeline-dot { left: 10px; }
    .triade-panel { flex-direction: column !important; }
    .triade-letter { width: 100%; height: 150px; flex: none; font-size: 5rem;}
}
/* ------------------------------------- */

/* Legacy Fallbacks for inner pages if they still use them */
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; }
.feature-card { background: white; padding: 3rem 2rem; border-radius: 4px; text-align: center; box-shadow: var(--shadow); }
.portfolio-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.portfolio-item { position: relative; height: 350px; overflow: hidden; display: block; }
.portfolio-img { width: 100%; height: 100%; background-size: cover; background-position: center; transition: transform 0.6s cubic-bezier(0.2, 1, 0.3, 1); }
.portfolio-overlay { position: absolute; top:0; left:0; width:100%; height:100%; background:rgba(17,17,17,0.8); display:flex; flex-direction:column; align-items:center; justify-content:center; opacity:0; transition:var(--transition); }
.portfolio-item:hover .portfolio-img { transform: scale(1.1); }
.portfolio-item:hover .portfolio-overlay { opacity: 1; }
.portfolio-overlay svg, .portfolio-overlay h4 { color: white; transform: translateY(20px); transition: transform 0.4s; }
.portfolio-item:hover .portfolio-overlay svg, .portfolio-item:hover .portfolio-overlay h4 { transform: translateY(0); }

.lightbox-modal { position: fixed; top:0; left:0; width:100%; height:100%; background:rgba(0,0,0,0.95); z-index:2000; display:flex; align-items:center; justify-content:center; opacity:0; pointer-events:none; transition:opacity 0.3s ease; }
.lightbox-modal.active { opacity:1; pointer-events:auto; }
.lightbox-modal img { max-width:90%; max-height:90vh; box-shadow:0 0 40px rgba(0,0,0,0.5); transform:scale(0.95); transition:transform 0.3s ease; }
.lightbox-modal.active img { transform:scale(1); }
.lightbox-close { position:absolute; top:2rem; right:2rem; background:none; border:none; color:white; cursor:pointer; padding:0.5rem; }

/* Contato Form */
.contato-form-wrapper { background: white; padding: 4rem; box-shadow: var(--shadow-lg); }
.form-group { margin-bottom: 1.5rem; }
.form-group input, .form-group textarea { width: 100%; padding: 1rem; border: 1px solid #e0e0e0; font-family: inherit; font-size: 1rem; transition: var(--transition); background: #fafafa; }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--color-accent); background: white; }

/* Responsive Updates */
@media (max-width: 1024px) {
    .overlap-img { width: 100%; height: 400px; position: static; }
    .overlap-container { margin-top: -100px; padding: 0 1.5rem; }
    .overlap-card { margin: 0 auto; width: 100%; max-width: none; padding: 3rem 2rem; }
    .dash-accent { left: 0; top: 0; position: relative; margin-bottom: 2rem; }
    .services-grid-3, .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
    .hero h1 { font-size: 3.5rem; }
    .watermark-text { font-size: 20vw; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .mobile-menu-btn { display: block; }
    .nav-links { position: absolute; top: var(--nav-height); left: 0; width: 100%; background: white; flex-direction: column; padding: 2rem 0; box-shadow: var(--shadow-md); clip-path: polygon(0 0, 100% 0, 100% 0, 0 0); }
    .nav-links.active { clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%); }
    .nav-links a:not(.btn) { color: var(--color-primary) !important; }
    .services-grid-3, .testimonials-grid, .features-grid, .portfolio-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 2.8rem; }
    .page-hero h1 { font-size: 2.5rem; }
    .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
}

/* Nossa Força Numbers Cards */
.numbers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}
.number-item {
    background: white;
    padding: 3.5rem 2rem;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
    border-bottom: 4px solid var(--color-accent);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
    position: relative;
}
.number-item::before {
    content: ''; position: absolute; top:0; left:0; width:100%; height:4px;
    background: var(--color-primary);
    border-radius: 8px 8px 0 0;
}
.number-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}
.num-wrap {
    font-size: 4.5rem;
    font-weight: 900;
    line-height: 1;
    margin-bottom: 1rem;
    display: flex;
    justify-content: center;
    align-items: baseline;
    color: var(--color-primary);
}
.num-wrap .counter {
    color: var(--color-primary) !important;
}
.num-wrap .plus {
    font-size: 3.5rem;
    color: var(--color-accent) !important;
    margin-left: 5px;
}
.num-desc {
    font-size: 1.15rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-muted) !important;
}