/* =========================================
   1. VARIÁVEIS GERAIS E TEMAS IET
========================================= */
:root {
    --iet-red: #AF2933;       
    --iet-red-glow: rgba(175, 41, 51, 0.4);
    --iet-gray: #1C1C1E; 
    --bg-dark: #0D0D0F;  
    --text-light: #F5F5F7;
    --text-gray: #A1A1A6;
    --text-gray-light: #D1D1D6;
    --border-subtle: rgba(255,255,255,0.08);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', sans-serif; line-height: 1.5; background-color: var(--bg-dark); color: var(--text-light); overflow-x: hidden; }
body.theme-dark-matte { background-color: #08080a; }
a { text-decoration: none; color: inherit; }

/* =========================================
   2. NAVBAR (Menu Vidro Fosco)
========================================= */
.apple-nav { position: fixed; top: 0; width: 100%; background: rgba(13, 13, 15, 0.7); backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px); z-index: 9000; border-bottom: 1px solid var(--border-subtle); transition: background 0.3s, border-color 0.3s, box-shadow 0.3s; }
.apple-nav.dark-nav { background: rgba(8, 8, 10, 0.85); border-bottom: 1px solid rgba(255,255,255,0.05); }
.nav-container { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; padding: 16px 20px; font-size: 14px; position: relative;}
.logo { display: flex; align-items: center; }
.logo img { height: 40px; width: auto; transition: filter 0.3s; }

/* Estilos dos Links */
.nav-links { display: flex; align-items: center; }
.nav-links a { margin: 0 16px; color: var(--text-gray); transition: 0.3s; font-weight: 500; }
.nav-links a:hover { color: var(--text-light); }
.nav-links a.active { color: var(--iet-red); text-shadow: 0 0 10px var(--iet-red-glow); font-weight: 700; }

/* Botão do Header */
.nav-cta { background: var(--iet-red); color: white; padding: 8px 18px; border-radius: 980px; font-weight: 600; transition: all 0.3s ease; }
.nav-cta:hover { background: #cf3340; box-shadow: 0 4px 15px var(--iet-red-glow); }

/* Botão Hambúrguer escondido no PC */
.mobile-menu-btn { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 5px; z-index: 9001; padding: 5px; }
.mobile-menu-btn span { width: 24px; height: 2px; background-color: var(--text-light); transition: all 0.3s ease; border-radius: 2px; }
.mobile-menu-btn.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-menu-btn.open span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =========================================
   3. SEÇÕES E TIPOGRAFIA BASE
========================================= */
.section { min-height: 80vh; display: flex; align-items: center; justify-content: center; padding: 120px 20px; text-align: center; position: relative;}
.content { max-width: 1200px; width: 100%; margin: 0 auto; position: relative; z-index: 2;}
.pre-title { font-size: 14px; font-weight: 700; color: var(--iet-red); margin-bottom: 16px; letter-spacing: 2px; text-transform: uppercase;}
.main-title { font-size: 72px; font-weight: 800; letter-spacing: -0.04em; line-height: 1.05; margin-bottom: 25px; background: linear-gradient(180deg, #FFFFFF 0%, #A1A1A6 100%); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent;}
.section-title { font-size: 48px; font-weight: 800; letter-spacing: -0.03em; margin-bottom: 60px; }
.subtitle { font-size: 22px; font-weight: 400; color: var(--text-gray); max-width: 750px; margin: 0 auto 40px auto; line-height: 1.6;}
.text-light { color: #FFFFFF !important; -webkit-text-fill-color: #FFFFFF !important; background: none; }
.text-gray-light { color: var(--text-gray-light) !important; }
.dark-gray-theme { background-color: var(--iet-gray); border-top: 1px solid var(--border-subtle); border-bottom: 1px solid var(--border-subtle);}
.logo-3m { color: var(--iet-red) !important; font-weight: 800; -webkit-text-fill-color: var(--iet-red) !important; background: none; }

/* =========================================
   4. BOTÕES GERAIS
========================================= */
.button-group { display: flex; justify-content: center; gap: 20px; align-items: center; margin-top: 40px;}
.btn { padding: 16px 32px; border-radius: 980px; font-size: 16px; font-weight: 600; transition: all 0.3s ease; display: inline-block; cursor: pointer;}
.btn-primary { background-color: var(--text-light); color: var(--bg-dark); border: 1px solid transparent; }
.btn-primary:hover { transform: scale(1.03); box-shadow: 0 10px 20px rgba(255,255,255,0.1); }
.btn-primary.light-btn { background-color: #FFFFFF; color: #000000; }
.btn-ghost { background-color: transparent; border: 1px solid rgba(255, 255, 255, 0.4); color: white; }
.btn-ghost:hover { background-color: rgba(255, 255, 255, 0.05); border-color: rgba(255, 255, 255, 0.6); }
.btn-link { color: var(--iet-red); font-size: 16px; font-weight: 600; display: flex; align-items: center; gap: 5px; cursor: pointer;}
.btn-link:hover { text-shadow: 0 0 10px var(--iet-red-glow); }

/* =========================================
   5. HERO IMERSIVO & LOGO 3M (Rápido)
========================================= */
.hero-main-immersive, .hero-3m-immersive { min-height: 100vh; overflow: hidden; display: flex; align-items: center; justify-content: flex-start; text-align: left; position: relative;}
.technical-grid-pulsing { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background-image: linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px); background-size: 60px 60px; z-index: 0; opacity: 0.6; animation: gridPulse 8s infinite alternate;}
@keyframes gridPulse { 0% { opacity: 0.4; transform: scale(1); } 100% { opacity: 0.8; transform: scale(1.02); } }
.hero-main-halo, .hero-3m-halo { position: absolute; top: 50%; left: 80%; transform: translate(-50%, -50%); width: 1000px; height: 1000px; border-radius: 50%; filter: blur(120px); z-index: 1; opacity: 0.8; pointer-events: none;}
.hero-main-halo { background: radial-gradient(circle, rgba(175, 41, 51, 0.15) 0%, transparent 70%); left: 50%; top: -20%; }
.hero-3m-halo { background: radial-gradient(circle, rgba(175, 41, 51, 0.25) 0%, transparent 70%); }
.hero-main-scene-wrapper, .hero-3m-scene-wrapper { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 2; overflow: hidden; }
.scene-image { width: 100%; height: 100%; object-fit: cover; object-position: right center; display: block; filter: brightness(0.7) contrast(1.1); animation: sceneFloat 20s infinite alternate cubic-bezier(0.4, 0, 0.2, 1);}
@keyframes sceneFloat { 0% { transform: scale(1) translateX(0); } 100% { transform: scale(1.05) translateX(-20px); } }

.hero-main-scene-wrapper::after, .hero-3m-scene-wrapper::after { content: ''; position: absolute; top: 0; left: 0; width: 65%; height: 100%; background: linear-gradient(to right, var(--bg-dark) 0%, rgba(8, 8, 10, 0.9) 40%, rgba(8, 8, 10, 0) 100%); z-index: 3; }
.hero-main-text-box, .hero-3m-text-box { max-width: 700px; }
.hero-main-text-box .subtitle, .hero-3m-text-box .subtitle { margin-left: 0; text-align: left; }

.hero-3m-logo-wrapper { position: absolute; top: 50%; right: 10%; transform: translateY(-50%); width: 400px; z-index: 2; opacity: 0.4; pointer-events: none;}
.hero-3m-logo-image { width: 100%; height: auto; display: block; filter: drop-shadow(0 20px 40px rgba(175,41,51,0.2)); animation: floatLogo 3s ease-in-out infinite;}
@keyframes floatLogo { 0% { transform: translateY(0px) rotate(0deg) scale(1); } 50% { transform: translateY(-30px) rotate(3deg) scale(1.05); } 100% { transform: translateY(0px) rotate(0deg) scale(1); } }

/* =========================================
   6. SEGMENTOS E PRODUTOS (BENTO & METAL)
========================================= */
.segmentos-dots-bg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background-image: radial-gradient(var(--border-subtle) 1.5px, transparent 1.5px); background-size: 40px 40px; z-index: 0; }
.segmentos-glow { position: absolute; top: 10%; right: -10%; width: 600px; height: 600px; border-radius: 50%; background: radial-gradient(circle, rgba(175, 41, 51, 0.12) 0%, transparent 70%); filter: blur(80px); z-index: 0; pointer-events: none; }
.bento-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; text-align: left; }
.bento-item { position: relative; overflow: hidden; border: 1px solid var(--border-subtle); border-radius: 30px; min-height: 400px; display: flex; align-items: flex-end; padding: 0; transition: transform 0.4s ease, border-color 0.4s; }
.bento-bg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background-size: cover; background-position: center; transition: transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1); z-index: 0; }
.bento-item::after { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: linear-gradient(to top, rgba(13, 13, 15, 0.95) 0%, rgba(13, 13, 15, 0.4) 50%, rgba(13, 13, 15, 0.1) 100%); z-index: 1; }
.bento-item:hover { transform: translateY(-5px); border-color: rgba(255,255,255,0.2); }
.bento-item:hover .bento-bg { transform: scale(1.08); }
.bento-content { position: relative; z-index: 2; padding: 40px; width: 100%; }
.bento-content-flex { display: flex; justify-content: space-between; align-items: flex-end; flex-wrap: wrap; gap: 20px;}
.bento-large { grid-column: span 2; }
.bento-link { color: white; text-shadow: 0 2px 10px rgba(0,0,0,0.8); background: rgba(255,255,255,0.1); padding: 10px 20px; border-radius: 980px; backdrop-filter: blur(10px);}
.bento-link:hover { background: var(--iet-red); text-shadow: none;}
.bento-item h4 { font-size: 28px; font-weight: 800; margin-bottom: 12px; color: var(--text-light); text-shadow: 0 2px 5px rgba(0,0,0,0.5);}
.bento-item p { font-size: 16px; color: #D1D1D6; line-height: 1.5; font-weight: 400;}

.metal-plate-theme { position: relative; background-color: #0D0D0F; background-image: radial-gradient(var(--border-subtle) 1px, transparent 1px), radial-gradient(circle at 50% 50%, rgba(175, 41, 51, 0.1) 0%, rgba(13, 13, 15, 1) 100%); background-size: 60px 60px, cover; background-position: center, center; border-top: 1px solid var(--border-subtle); border-bottom: 1px solid var(--border-subtle); overflow: hidden;}
.grid-3-col { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; text-align: left; position: relative; z-index: 2;}
.card-produto-pro { position: relative; overflow: hidden; border: 1px solid var(--border-subtle); border-radius: 24px; min-height: 420px; display: flex; align-items: flex-end; padding: 20px; transition: all 0.4s cubic-bezier(0.2, 0.8, 0.2, 1); background: #000; }
.card-produto-pro:hover { border-color: rgba(175, 41, 51, 0.4); box-shadow: 0 20px 40px rgba(0,0,0,0.6), 0 0 30px rgba(175, 41, 51, 0.2); transform: translateY(-10px); }
.produto-img-wrapper { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 0; }
.produto-img-wrapper::after { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: linear-gradient(to top, rgba(13, 13, 15, 0.95) 0%, rgba(13, 13, 15, 0.2) 60%, transparent 100%); z-index: 1; }
.produto-img { width: 100%; height: 100%; object-fit: cover; object-position: center; display: block; transition: transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1); }
.card-produto-pro:hover .produto-img { transform: scale(1.1); }
.produto-info { position: relative; z-index: 2; width: 100%; background: rgba(28, 28, 30, 0.4); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,0.05); border-top: 2px solid var(--iet-red); border-radius: 16px; padding: 25px; transition: transform 0.4s ease; }
.card-produto-pro:hover .produto-info { transform: translateY(-5px); background: rgba(28, 28, 30, 0.6); border-color: rgba(175, 41, 51, 0.3); }
.produto-info h4 { font-size: 24px; font-weight: 800; margin-bottom: 8px; color: var(--text-light); letter-spacing: -0.5px; }
.produto-info p { font-size: 15px; color: #D1D1D6; font-weight: 400; }

/* =========================================
   8. LAYOUT ZIG-ZAG DARK (Página 3M) E SOBRE
========================================= */
.bg-dark-creative { position: relative; background-color: var(--bg-dark); }
.zigzag-row { display: flex; align-items: center; gap: 0; margin-bottom: 120px; position: relative; text-align: left; }
.zigzag-row.reverse { flex-direction: row-reverse; }
.zigzag-image { flex: 1.2; height: 500px; background-size: cover; background-position: center; border-radius: 30px; box-shadow: 0 30px 60px rgba(0,0,0,0.5); position: relative; z-index: 1; }
.zigzag-image::after { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: linear-gradient(to right, rgba(13, 13, 15, 0.6), transparent); border-radius: 30px; }
.zigzag-row.reverse .zigzag-image::after { background: linear-gradient(to left, rgba(13, 13, 15, 0.6), transparent); }
.zigzag-text { flex: 1; background: rgba(28, 28, 30, 0.8); backdrop-filter: blur(24px); padding: 60px 50px; border-radius: 24px; border: 1px solid var(--border-subtle); box-shadow: 0 20px 50px rgba(0,0,0,0.5); position: relative; z-index: 2; margin-left: -80px; border-left: 4px solid var(--iet-red); }
.zigzag-row.reverse .zigzag-text { margin-left: 0; margin-right: -80px; border-left: 1px solid var(--border-subtle); border-right: 4px solid var(--iet-red); }
.segment-number { font-size: 80px; font-weight: 800; color: rgba(175, 41, 51, 0.15); position: absolute; top: 10px; right: 30px; line-height: 1; z-index: 0; pointer-events: none; transition: all 0.4s ease;}
.zigzag-row:hover .segment-number { color: rgba(175, 41, 51, 0.3); transform: scale(1.1); }
.zigzag-row.reverse .segment-number { right: auto; left: 30px; }
.zigzag-text h3 { font-size: 32px; font-weight: 800; margin-bottom: 20px; position: relative; z-index: 1; }
.zigzag-text p { font-size: 17px; line-height: 1.6; position: relative; z-index: 1; }

.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; text-align: left; }
.stats-grid { display: flex; gap: 30px; margin-bottom: 30px; border-left: 3px solid var(--iet-red); padding-left: 20px; flex-wrap: wrap;}
.stat-number { display: block; font-size: 48px; font-weight: 800; color: var(--text-light); line-height: 1; margin-bottom: 5px;}
.stat-label { font-size: 13px; text-transform: uppercase; letter-spacing: 1px; color: var(--iet-red); font-weight: 700;}
.about-visual { position: relative; width: 100%; height: 500px; }
.visual-accent { position: absolute; top: -20px; right: -20px; bottom: 20px; left: 20px; border: 2px solid var(--iet-red); border-radius: 30px; z-index: 0; opacity: 0.3;}
.image-placeholder { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: #1a1a1c; border-radius: 30px; display: flex; align-items: center; justify-content: center; z-index: 1; border: 1px solid var(--border-subtle); overflow: hidden;}
.dna-bento { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; grid-template-areas: "missao missao visao" "valores qualidade qualidade" "unidades unidades unidades";}
.dna-card { background: rgba(20, 20, 22, 0.6); backdrop-filter: blur(20px); border: 1px solid var(--border-subtle); border-radius: 24px; padding: 40px; position: relative; overflow: hidden; transition: all 0.4s ease; display: flex; flex-direction: column; justify-content: center; text-align: left; }
.dna-card:hover { border-color: rgba(175, 41, 51, 0.4); box-shadow: 0 15px 30px rgba(0,0,0,0.3); }
.dna-icon-bg { position: absolute; top: -20px; right: -20px; font-size: 120px; opacity: 0.03; z-index: 0; pointer-events: none; transition: 0.4s; }
.dna-card:hover .dna-icon-bg { transform: scale(1.1) rotate(-10deg); opacity: 0.08; color: var(--iet-red); }
.dna-card h4 { font-size: 24px; color: var(--text-light); margin-bottom: 15px; font-weight: 800; position: relative; z-index: 1; }
.dna-card p { font-size: 15px; color: var(--text-gray); line-height: 1.6; position: relative; z-index: 1; }
.dna-card.missao { grid-area: missao; border-top: 3px solid var(--iet-red); }
.dna-card.visao { grid-area: visao; }
.dna-card.valores { grid-area: valores; }
.dna-card.qualidade { grid-area: qualidade; background: linear-gradient(135deg, rgba(175, 41, 51, 0.15) 0%, rgba(20, 20, 22, 0.9) 100%); border: 1px solid rgba(175, 41, 51, 0.3); flex-direction: row; align-items: center; justify-content: space-between; gap: 30px; }
.qualidade-content { flex: 1; z-index: 1; }
.qualidade-selo { font-size: 50px; font-weight: 900; color: var(--iet-red); opacity: 0.1; writing-mode: vertical-rl; text-transform: uppercase; letter-spacing: 5px; transform: rotate(180deg); user-select: none; }
.btn-certificado { display: inline-flex; align-items: center; gap: 8px; background: rgba(175, 41, 51, 0.2); color: var(--iet-red); padding: 12px 24px; border-radius: 980px; font-weight: 600; font-size: 14px; border: 1px solid var(--iet-red); transition: all 0.3s; }
.btn-certificado:hover { background: var(--iet-red); color: white; box-shadow: 0 4px 15px var(--iet-red-glow); }
.dna-card.unidades { grid-area: unidades; background: transparent; border: none; padding: 20px 0 0 0; box-shadow: none; }
.unidades-flex { display: flex; gap: 30px; background: rgba(20, 20, 22, 0.4); border: 1px solid var(--border-subtle); border-radius: 24px; padding: 40px; align-items: center; }
.unidade-item { flex: 1; }
.unidade-divider { width: 1px; height: 80px; background: var(--border-subtle); }
.unidade-tag { display: inline-block; background: rgba(255,255,255,0.05); padding: 4px 12px; border-radius: 4px; font-size: 11px; text-transform: uppercase; letter-spacing: 1px; color: var(--text-gray); margin-bottom: 12px; font-weight: 700; }
.unidade-item h5 { font-size: 22px; color: var(--text-light); margin-bottom: 8px; font-weight: 700; }
.unidade-item p { font-size: 15px; color: var(--text-gray); line-height: 1.5; }

/* =========================================
   10. FAQ (Crimson Theme)
========================================= */
.faq-crimson-theme { position: relative; background-color: var(--bg-dark); overflow: hidden; padding-top: 150px; padding-bottom: 150px;}
.faq-glow-bg { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 120vw; height: 100%; background: radial-gradient(ellipse at center, rgba(175, 41, 51, 0.25) 0%, rgba(13, 13, 15, 0) 70%); z-index: 0; pointer-events: none;}
.glass-card { background: rgba(20, 20, 22, 0.4); backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px); border: 1px solid rgba(175, 41, 51, 0.3); border-radius: 30px; padding: 50px; box-shadow: 0 30px 60px rgba(0,0,0,0.6); margin-top: 40px;}
.faq-container { max-width: 900px; margin: 0 auto; text-align: left; }
.faq-item { border-bottom: 1px solid rgba(175, 41, 51, 0.2); } 
.faq-item:last-child { border-bottom: none; }
.faq-question { width: 100%; background: none; border: none; color: var(--text-light); font-size: 20px; font-weight: 600; text-align: left; padding: 30px 0; cursor: pointer; display: flex; justify-content: space-between; align-items: center; font-family: 'Inter', sans-serif; transition: color 0.3s; }
.faq-question:hover { color: #ff9b9b; }
.faq-icon { font-size: 24px; font-weight: 300; transition: transform 0.3s ease; color: var(--iet-red);}
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.faq-answer p { padding-bottom: 30px; color: rgba(255,255,255,0.7); font-size: 17px; line-height: 1.6; }
.faq-question.active .faq-icon { transform: rotate(45deg); color: #ff9b9b;}

/* =========================================
   11. PRE-FOOTER CTA E FOOTER (CAIXA DE VIDRO RESTAURADA)
========================================= */
.iet-footer { position: relative; background-color: #0a0a0c; border-top: 1px solid var(--border-subtle); padding: 60px 20px 40px; overflow: hidden; z-index: 10; }
.footer-grid-bg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background-image: linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px); background-size: 60px 60px; z-index: 0; }
.footer-glow { position: absolute; bottom: -20%; left: 50%; transform: translateX(-50%); width: 800px; height: 400px; border-radius: 50%; background: radial-gradient(circle, rgba(175, 41, 51, 0.15) 0%, transparent 70%); filter: blur(80px); z-index: 0; pointer-events: none; }
.iet-footer .content { position: relative; z-index: 1; }

/* Correção Exata: Mapeando os estilos da caixa de vidro diretamente na classe footer-cta que está no HTML */
.footer-cta { 
    text-align: left; margin-bottom: 80px; padding: 60px; 
    display: flex; align-items: center; justify-content: space-between; gap: 40px; 
    background: rgba(20, 20, 22, 0.6); 
    backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px); 
    border: 1px solid var(--border-subtle); border-radius: 32px; 
    box-shadow: 0 30px 60px rgba(0,0,0,0.4); position: relative; overflow: hidden; 
}
.footer-cta::before { content: ''; position: absolute; top: -50%; left: -10%; width: 50%; height: 200%; background: radial-gradient(ellipse, rgba(175,41,51,0.15) 0%, transparent 70%); z-index: 0; pointer-events: none; }
.cta-text-content { position: relative; z-index: 1; }
.cta-badge { display: inline-block; font-size: 12px; font-weight: 700; color: #ff9b9b; text-transform: uppercase; letter-spacing: 2px; margin-bottom: 15px; background: rgba(175,41,51,0.2); padding: 6px 14px; border-radius: 980px; border: 1px solid rgba(175,41,51,0.3); }
.footer-cta h2 { font-size: 42px; font-weight: 800; color: var(--text-light); letter-spacing: -0.03em; margin-bottom: 15px; line-height: 1.1; }
.footer-cta p { color: var(--text-gray); font-size: 16px; max-width: 450px; font-weight: 400; }
.footer-cta-buttons { position: relative; z-index: 1; display: flex; gap: 15px; flex-shrink: 0; }

.footer-grid { display: grid; grid-template-columns: 2.5fr 1fr 1fr 1.5fr; gap: 50px; margin-bottom: 60px; text-align: left; }
.footer-brand .footer-logo { height: 45px; margin-bottom: 20px; }

/* Fonte Opaca (Cinza elegante) para a marca */
.footer-brand p { color: rgba(255, 255, 255, 0.5); font-size: 14px; line-height: 1.6; max-width: 320px; font-weight: 400; }

.footer-partner { display: flex; align-items: center; gap: 15px; margin-top: 25px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,0.05); max-width: 320px;}
.footer-3m-logo { height: 35px; width: auto; filter: drop-shadow(0 2px 5px rgba(0,0,0,0.5));}
.partner-title { display: block; font-size: 11px; text-transform: uppercase; letter-spacing: 1px; color: var(--text-gray); margin-bottom: 2px; }
.partner-desc { display: block; font-size: 13px; font-weight: 700; color: var(--text-light); }

.footer-grid h4 { color: var(--text-light); font-size: 18px; font-weight: 700; margin-bottom: 25px; letter-spacing: 0.5px; }
.footer-links { display: flex; flex-direction: column; gap: 12px; }

/* Links na cor opaca */
.footer-links a { color: rgba(255, 255, 255, 0.5); font-size: 14px; font-weight: 400; transition: color 0.3s, transform 0.3s; display: inline-block; width: fit-content; }
.footer-links a:hover { color: var(--iet-red); transform: translateX(5px); }

/* Textos e Links de Contato na cor opaca */
.clean-contact { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px;}
.clean-contact span, .clean-contact a { font-size: 14px; color: rgba(255, 255, 255, 0.5); font-weight: 400; transition: color 0.3s;}
.clean-contact a:hover { color: #fff;}

/* Unidades (Título forte, texto opaco) */
.clean-unit { margin-bottom: 15px; display: flex; flex-direction: column; gap: 2px;}
.clean-unit strong { color: rgba(255, 255, 255, 0.8); font-size: 14px; font-weight: 600; }
.clean-unit span { color: rgba(255, 255, 255, 0.5); font-size: 13px; font-weight: 400; }

.footer-social { margin-top: 25px; display: flex; gap: 15px; }
.social-icon { display: flex; align-items: center; justify-content: center; width: 42px; height: 42px; background: rgba(255,255,255,0.05); border-radius: 50%; color: var(--text-light); transition: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1); border: 1px solid transparent; }
.social-icon svg { width: 20px; height: 20px; }
.social-icon:hover { background: var(--iet-red); border-color: var(--iet-red-glow); transform: translateY(-4px); box-shadow: 0 8px 20px rgba(175, 41, 51, 0.4); color: white; }

.footer-bottom { display: flex; justify-content: space-between; align-items: center; border-top: 1px solid rgba(255,255,255,0.05); padding-top: 30px; color: rgba(255,255,255,0.3); font-size: 13px; }

/* =========================================
   12. MODAIS PREMIUM GIGANTES E CARROSSEL
========================================= */
.iet-modal { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.85); backdrop-filter: blur(15px); -webkit-backdrop-filter: blur(15px); z-index: 99999; justify-content: center; align-items: center; opacity: 0; transition: opacity 0.4s ease; padding: 20px;}
.iet-modal.show { display: flex; opacity: 1; }
.iet-modal-content { background: var(--bg-dark); background-image: radial-gradient(circle at 100% 0%, rgba(175, 41, 51, 0.15) 0%, transparent 50%); border: 1px solid rgba(255,255,255,0.1); border-top: 4px solid var(--iet-red); border-radius: 24px; padding: 50px; width: 100%; max-width: 1100px; position: relative; transform: scale(0.95) translateY(20px); opacity: 0; transition: all 0.5s cubic-bezier(0.2, 0.8, 0.2, 1); box-shadow: 0 40px 100px rgba(0,0,0,0.9); max-height: 95vh; overflow-y: auto;}
.iet-modal.show .iet-modal-content { transform: scale(1) translateY(0); opacity: 1; }
.close-modal { position: absolute; top: 25px; right: 30px; background: none; border: none; color: var(--text-gray); font-size: 40px; cursor: pointer; transition: color 0.3s; line-height: 1; }
.close-modal:hover { color: var(--iet-red); }
.modal-title { font-size: 32px; font-weight: 800; color: var(--text-light); margin-bottom: 30px; padding-bottom: 20px; border-bottom: 1px solid var(--border-subtle); }
.carousel-container { position: relative; width: 100%; padding: 0 60px; }
.carousel-track-wrapper { overflow: hidden; width: 100%; border-radius: 16px;}
.carousel-track { display: flex; transition: transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1); list-style: none; padding: 0; margin: 0; }
.carousel-slide { min-width: 100%; display: flex; gap: 50px; align-items: center; padding: 10px 0; }
.carousel-slide img { width: 50%; height: 380px; border-radius: 16px; object-fit: cover; border: 1px solid rgba(255,255,255,0.05); box-shadow: 0 10px 30px rgba(0,0,0,0.5); }
.slide-info { width: 50%; text-align: left; display: flex; flex-direction: column; justify-content: center; }
.slide-info h4 { font-size: 32px; font-weight: 800; color: var(--text-light); margin-bottom: 20px; line-height: 1.2;}
.slide-info p { font-size: 18px; color: var(--text-gray-light); line-height: 1.6; }
.carousel-btn { position: absolute; top: 50%; transform: translateY(-50%); background: rgba(175,41,51,0.9); border: 1px solid rgba(255,255,255,0.2); color: white; width: 50px; height: 50px; border-radius: 50%; cursor: pointer; z-index: 10; font-size: 22px; font-weight: bold; transition: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1); box-shadow: 0 5px 15px rgba(0,0,0,0.5); display: flex; align-items: center; justify-content: center;}
.carousel-btn:hover { background: #cf3340; transform: translateY(-50%) scale(1.15); box-shadow: 0 8px 25px rgba(175,41,51,0.6); }
.carousel-btn.prev { left: 0; }
.carousel-btn.next { right: 0; }

/* =========================================
   13. WHATSAPP E REVEAL
========================================= */
.whatsapp-float { position: fixed; width: 60px; height: 60px; bottom: 40px; right: 40px; background-color: #25d366; color: #FFF; border-radius: 50px; text-align: center; box-shadow: 0 6px 15px rgba(0,0,0,0.3); z-index: 99998; display: flex; align-items: center; justify-content: center; transition: all 0.3s ease; }
.whatsapp-float:hover { transform: scale(1.1); background-color: #1ebd5e; box-shadow: 0 8px 20px rgba(37, 211, 102, 0.4); }
.whatsapp-icon { width: 34px; height: 34px; filter: drop-shadow(0 2px 2px rgba(0,0,0,0.1)); }

.reveal { opacity: 0; transform: translateY(60px); transition: opacity 0.8s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1); will-change: opacity, transform;}
.reveal.active { opacity: 1; transform: translateY(0); }

/* =========================================
   14. MEDIA QUERIES (Responsividade Total com Menu Mobile)
========================================= */
@media (max-width: 1024px) {
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 50px; }
    .footer-cta { flex-direction: column; text-align: center; padding: 50px 40px; gap: 30px; }
    .footer-cta::before { top: -50%; left: 50%; transform: translateX(-50%); width: 100%; height: 50%; background: radial-gradient(ellipse at top, rgba(175,41,51,0.15) 0%, transparent 70%); }
    .cta-text-content { max-width: 100%; margin: 0 auto; }
}

@media (max-width: 900px) {
    .main-title { font-size: 48px !important; }
    .section-title { font-size: 36px; }
    .subtitle { font-size: 18px; }
    
    /* Mostrar Botão Menu no Celular/Tablet */
    .mobile-menu-btn { display: flex; }
    
    /* Configuração da Gaveta do Menu Mobile */
    .nav-links { 
        position: absolute; 
        top: 100%; 
        left: 0; 
        width: 100%; 
        background: rgba(13, 13, 15, 0.98); 
        backdrop-filter: blur(24px); 
        -webkit-backdrop-filter: blur(24px);
        flex-direction: column; 
        overflow: hidden; 
        max-height: 0; 
        transition: max-height 0.4s ease, padding 0.4s ease; 
        border-bottom: 1px solid transparent; 
        align-items: center; 
    }
    .nav-links.active { max-height: 400px; padding: 20px 0; border-bottom: 1px solid var(--border-subtle); }
    .nav-links a { margin: 15px 0; font-size: 16px; }
    
    .bento-grid, .grid-3-col, .about-grid { grid-template-columns: 1fr !important; }
    .dna-bento { grid-template-columns: 1fr; grid-template-areas: "missao" "visao" "valores" "qualidade" "unidades"; }
    .dna-card.qualidade { flex-direction: column; text-align: left; align-items: flex-start; }
    .qualidade-selo { display: none; }
    .unidades-flex { flex-direction: column; gap: 30px; align-items: flex-start; padding: 30px; }
    .unidade-divider { width: 100%; height: 1px; }
    .bento-large { grid-column: span 1 !important; } 
    .bento-item { min-height: 350px; }
    .section { padding: 80px 20px; }
    .about-visual { height: 350px; margin-top: 40px;}

    .hero-main-immersive, .hero-3m-immersive { justify-content: center; text-align: center; padding-top: 150px; }
    .hero-main-text-box, .hero-3m-text-box { max-width: 100%; }
    .hero-main-text-box .subtitle, .hero-3m-text-box .subtitle { text-align: center; }
    .button-group { justify-content: center !important; }
    
    .hero-3m-logo-wrapper { top: 15%; right: 50%; transform: translateX(50%); width: 250px; opacity: 0.15; z-index: 0; }
    
    .zigzag-row, .zigzag-row.reverse { flex-direction: column; gap: 0; margin-bottom: 60px; }
    .zigzag-image { width: 100%; height: 300px; border-radius: 20px 20px 0 0; }
    .zigzag-text, .zigzag-row.reverse .zigzag-text { margin: 0; margin-top: -30px; border-radius: 20px; border: none; border-top: 4px solid var(--iet-red); width: 95%; padding: 40px 20px; }
    
    .iet-modal-content { padding: 30px 20px; }
    .carousel-container { padding: 0 15px; }
    .carousel-slide { flex-direction: column; gap: 20px; text-align: center;}
    .carousel-slide img { width: 100%; height: 250px;}
    .slide-info { width: 100%; text-align: center;}
    .slide-info h4 { font-size: 24px; margin-bottom: 10px;}
    .slide-info p { font-size: 15px; }
    .carousel-btn { width: 40px; height: 40px; font-size: 18px; }
    .carousel-btn.prev { left: -10px; }
    .carousel-btn.next { right: -10px; }
}

@media (max-width: 768px) {
    .pre-title { font-size: 12px; }
    
    /* Navbar compactada no celular */
    .nav-container { padding: 12px 15px; }
    .logo img { height: 32px; } 
    .nav-cta { padding: 8px 14px; font-size: 13px; }
    
    .iet-footer { padding: 60px 0 0 0; }
    
    .footer-grid { grid-template-columns: 1fr; gap: 40px; text-align: center; padding-top: 40px; border-top: 1px solid rgba(255,255,255,0.05); }
    
    .footer-cta { padding: 40px 20px; border-radius: 24px; margin-bottom: 40px; flex-direction: column; gap: 20px; text-align: center; }
    .footer-cta h2 { font-size: 32px; }
    
    .footer-cta-buttons { flex-direction: column; width: 100%; }
    .footer-cta-buttons .btn { width: 100%; text-align: center; }
    
    .footer-partner, .footer-social { justify-content: center; margin-left: auto; margin-right: auto; }
    .footer-brand p, .footer-divider { margin: 0 auto; max-width: 100%; }
    
    .footer-bottom { flex-direction: column; gap: 10px; text-align: center; padding: 25px 20px; }
    
    /* WhatsApp Reduzido no Celular para não cobrir a tela */
    .whatsapp-float { width: 50px; height: 50px; bottom: 20px; right: 20px; }
    .whatsapp-icon { width: 28px; height: 28px; }
}