/* ==========================================================================
   CENTER TINTAS AUTOMOTIVAS - STYLE.CSS
   Metodologia: BEM
   Estrutura:
     1. Variáveis (design tokens)
     2. Reset / Base
     3. Utilitários
     4. Componentes (botões, cards, forms)
     5. Layout (header, footer, hero...)
     6. Seções
     7. Responsividade
     8. Animações
   ========================================================================== */

/* ============ 1. VARIÁVEIS ============ */
:root{
  --primary:#E30613;
  --primary-dark:#B00510;
  --secondary:#111111;
  --dark:#1D1D1D;
  --gray:#444444;
  --gray-light:#8A8A8A;
  --line:#2A2A2A;
  --bg:#FFFFFF;
  --bg-soft:#F5F5F7;
  --white:#FFFFFF;

  --font-display:'Bebas Neue', Impact, sans-serif;
  --font-body:'Inter', system-ui, -apple-system, Segoe UI, Arial, sans-serif;
  --transition:.35s cubic-bezier(.4,0,.2,1);
  --container:1240px;
  --header-h:80px;
}

/* ============ 2. RESET / BASE ============ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  color:var(--secondary);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;transition:color var(--transition);}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea,select{font:inherit;color:inherit;}
ul{list-style:none;}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:400;letter-spacing:.02em;line-height:1.1;}

/* Focus visível (acessibilidade) */
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:4px;}

/* ============ 3. UTILITÁRIOS ============ */
.container{max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ============ 4. COMPONENTES ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:14px 32px;border-radius:6px;font-weight:600;font-size:15px;
  transition:all var(--transition);white-space:nowrap;
}
.btn--primary{background:var(--primary);color:var(--white);}
.btn--primary:hover{background:var(--primary-dark);transform:translateY(-2px);}
.btn--secondary{border:2px solid var(--secondary);color:var(--secondary);}
.btn--secondary:hover{background:var(--secondary);color:var(--white);}

/* ============ 5. LAYOUT ============ */
header{
  position:fixed;top:0;left:0;width:100%;height:var(--header-h);
  background:var(--bg);border-bottom:1px solid var(--line);z-index:999;
  transition:all var(--transition);
}
header.is-scrolled{box-shadow:0 4px 20px rgba(0,0,0,.08);}
.header__container{
  display:flex;align-items:center;justify-content:space-between;
  height:100%;
}
.header__logo{display:flex;align-items:center;gap:12px;}
.header__logo-icon{
  width:48px;height:48px;background:var(--primary);color:var(--white);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-display);font-size:28px;border-radius:8px;
}
.header__logo-text{display:flex;flex-direction:column;}
.header__logo-text strong{font-family:var(--font-display);font-size:20px;letter-spacing:.08em;}
.header__logo-text em{font-style:normal;font-size:9px;letter-spacing:.35em;color:#bbb;margin-top:2px;}

nav{display:flex;gap:32px;align-items:center;}
nav a{font-weight:500;font-size:15px;transition:color var(--transition);}
nav a:hover{color:var(--primary);}

#menuToggle{display:none;font-size:28px;padding:8px;}

footer{
  background:var(--dark);color:var(--white);text-align:center;
  padding:32px 24px;font-size:14px;
}

#backToTop{
  position:fixed;bottom:32px;right:32px;width:48px;height:48px;
  background:var(--primary);color:var(--white);border-radius:50%;
  font-size:24px;opacity:0;pointer-events:none;
  transition:all var(--transition);z-index:998;
}
#backToTop.is-visible{opacity:1;pointer-events:auto;}
#backToTop:hover{background:var(--primary-dark);transform:translateY(-4px);}

/* ============ 6. SEÇÕES ============ */
.hero{
  min-height:100vh;display:flex;align-items:center;
  background:linear-gradient(135deg,#111 0%,#1d1d1d 100%);
  color:var(--white);padding-top:var(--header-h);
}
.hero__location{
  display:inline-block;padding:6px 16px;background:rgba(227,6,19,.15);
  color:var(--primary);border-radius:24px;font-size:12px;
  font-weight:700;letter-spacing:.1em;margin-bottom:24px;
}
.hero h1{font-size:clamp(40px,6vw,72px);margin-bottom:24px;}
.hero p{font-size:18px;max-width:600px;margin-bottom:40px;color:#ccc;}
.hero__cta{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:64px;}
.hero__stats{
  display:flex;gap:48px;padding-top:48px;
  border-top:1px solid rgba(255,255,255,.1);flex-wrap:wrap;
}
.hero__stats div{display:flex;flex-direction:column;}
.hero__stats strong{font-size:32px;font-family:var(--font-display);color:var(--primary);}

.features{padding:120px 0;background:var(--bg-soft);}
.features h2{font-size:clamp(32px,5vw,56px);margin-bottom:64px;text-align:center;}
.features__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:32px;}
.feature{
  background:var(--white);padding:40px;border-radius:12px;
  transition:all var(--transition);border:1px solid transparent;
}
.feature:hover{transform:translateY(-8px);border-color:var(--primary);box-shadow:0 12px 32px rgba(0,0,0,.08);}
.feature h3{font-size:24px;margin-bottom:16px;color:var(--primary);}

.about{padding:120px 0;text-align:center;}
.about__badge{
  display:inline-block;padding:8px 20px;background:var(--primary);
  color:var(--white);border-radius:24px;font-size:13px;
  font-weight:700;margin-bottom:24px;
}
.about h2{font-size:clamp(32px,5vw,56px);margin-bottom:32px;}
.about p{font-size:18px;max-width:800px;margin:0 auto 24px;color:var(--gray);}

.products{padding:120px 0;}
.products h2{font-size:clamp(32px,5vw,56px);margin-bottom:48px;text-align:center;}
.products__controls{
  display:flex;gap:16px;margin-bottom:48px;flex-wrap:wrap;
}
.products__controls input,.products__controls select{
  padding:12px 16px;border:1px solid var(--line);border-radius:6px;
  background:var(--white);flex:1;min-width:200px;
}
.products__grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:32px;}
.product{
  background:var(--white);border:1px solid var(--line);border-radius:12px;
  padding:24px;transition:all var(--transition);cursor:pointer;
}
.product:hover{transform:translateY(-8px);box-shadow:0 12px 32px rgba(0,0,0,.1);}
.product__image{
  width:100%;aspect-ratio:1;background:var(--bg-soft);
  border-radius:8px;margin-bottom:16px;display:flex;
  align-items:center;justify-content:center;overflow:hidden;
}
.product__pot{
  width:120px;height:140px;background:linear-gradient(180deg,#ddd 0%,#f5f5f5 100%);
  border-radius:12px 12px 60px 60px;position:relative;
  box-shadow:inset 0 -8px 16px rgba(0,0,0,.1);
}
.product__pot::before{
  content:'';position:absolute;top:8px;left:10%;width:80%;height:20px;
  background:var(--pot-color,#999);border-radius:4px;
}
.product__brand{font-size:11px;color:var(--gray-light);text-transform:uppercase;letter-spacing:.08em;}
.product h3{font-size:18px;margin:8px 0;min-height:44px;}
.product__cat{font-size:13px;color:var(--primary);font-weight:600;}
.product__price{font-size:24px;font-family:var(--font-display);color:var(--secondary);margin-top:12px;}

.brands{padding:80px 0;background:var(--bg-soft);overflow:hidden;}
.brands h2{font-size:clamp(32px,5vw,56px);margin-bottom:48px;text-align:center;}
.brands__slider{display:flex;gap:64px;animation:scroll 30s linear infinite;}
.brands__slider img{height:48px;opacity:.6;transition:opacity var(--transition);}
.brands__slider img:hover{opacity:1;}

@keyframes scroll{0%{transform:translateX(0);}100%{transform:translateX(-50%);}}

.promo{
  padding:120px 0;background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);
  color:var(--white);text-align:center;position:relative;
}
.promo h2{font-size:clamp(32px,5vw,56px);margin-bottom:16px;}
.promo p{font-size:18px;max-width:600px;margin:0 auto 32px;}
.promo__badge{
  position:absolute;top:40px;right:40px;width:120px;height:120px;
  background:rgba(255,255,255,.15);border-radius:50%;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  font-family:var(--font-display);font-size:40px;line-height:1;
  border:3px solid rgba(255,255,255,.3);
}

.testimonials{padding:120px 0;}
.testimonials h2{font-size:clamp(32px,5vw,56px);margin-bottom:64px;text-align:center;}
.testimonials__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:32px;}
.testimonial{
  background:var(--bg-soft);padding:32px;border-radius:12px;
  border-left:4px solid var(--primary);
}
.testimonial p{font-style:italic;margin-bottom:16px;color:var(--gray);}
.testimonial strong{display:block;color:var(--secondary);font-weight:600;}

.contact{padding:120px 0;background:var(--bg-soft);}
.contact h2{font-size:clamp(32px,5vw,56px);margin-bottom:64px;text-align:center;}
.contact__grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;}
.contact__info div{margin-bottom:32px;}
.contact__info h3{font-size:18px;margin-bottom:8px;color:var(--primary);}
.contact__info p,.contact__info a{color:var(--gray);font-size:16px;}
.contact__info a:hover{color:var(--primary);}

form{display:flex;flex-direction:column;gap:20px;}
form input,form textarea{
  padding:14px 16px;border:1px solid var(--line);border-radius:6px;
  background:var(--white);transition:border var(--transition);
}
form input:focus,form textarea:focus{border-color:var(--primary);outline:none;}
form textarea{resize:vertical;min-height:120px;}
.form__feedback{
  padding:12px;border-radius:6px;font-size:14px;font-weight:600;
  text-align:center;display:none;
}
.form__feedback.is-success{display:block;background:#d1fae5;color:#065f46;}
.form__feedback.is-error{display:block;background:#fee2e2;color:#991b1b;}

.modal{
  display:none;position:fixed;inset:0;background:rgba(0,0,0,.8);
  z-index:9999;align-items:center;justify-content:center;
  padding:24px;animation:fadeIn .3s;
}
.modal.is-active{display:flex;}
.modal__content{
  background:var(--white);border-radius:12px;max-width:600px;
  width:100%;max-height:90vh;overflow-y:auto;
  position:relative;animation:slideUp .3s;
}
.modal__close{
  position:absolute;top:16px;right:16px;width:40px;height:40px;
  border-radius:50%;background:var(--bg-soft);font-size:24px;
  transition:all var(--transition);
}
.modal__close:hover{background:var(--primary);color:var(--white);}
.modal__body{padding:48px 32px;}

@keyframes fadeIn{from{opacity:0;}to{opacity:1;}}
@keyframes slideUp{from{transform:translateY(40px);opacity:0;}to{transform:translateY(0);opacity:1;}}

/* ============ 7. RESPONS