/* =========================================================
   Nova Look Som — site institucional
   Cores: grafite + cobre (mesma identidade dos sistemas)
   ========================================================= */
:root {
  --graphite: #16191C;
  --graphite-2: #22272B;
  --line-dark: #3A3F44;
  --ground: #F4F2ED;
  --white: #FFFFFF;
  --ink: #1B1F22;
  --ink-2: #4B5157;
  --ink-3: #6A6F74;
  --line: #E0DBD2;
  --copper: #B8662F;
  --copper-light: #E9A877;
  --copper-dark: #8E4718;
  --on-dark: #ECE8E1;
  --on-dark-2: #C9C4BB;
  --display: "Oswald", "Arial Narrow", sans-serif;
  --body: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --radius: 14px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--ground); color: var(--ink); font: 17px/1.6 var(--body); }
img, svg { max-width: 100%; }
a { color: var(--copper-dark); }
a:hover { color: #6B320F; }
h1, h2, h3 { margin: 0; text-wrap: balance; }
p { margin: 0; }
:focus-visible { outline: 3px solid var(--copper-light); outline-offset: 2px; }

.wrap { max-width: 1200px; margin: 0 auto; padding-inline: 24px; }
.skip { position: absolute; left: -9999px; top: 8px; background: var(--white); padding: 8px 12px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }

/* ---------- botões ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; text-decoration: none; font-weight: 600; border-radius: 10px; padding: 13px 22px; border: 1px solid transparent; cursor: pointer; font: 600 16px/1.2 var(--body); transition: filter .15s, background .15s; }
.btn--sm { padding: 10px 16px; font-size: 15px; }
.btn--lg { padding: 16px 26px; font-size: 17px; }
.btn--copper { background: #D9894F; color: var(--graphite); }
.btn--copper:hover { filter: brightness(1.07); color: var(--graphite); }
.btn--outline { border-color: #5A6066; color: var(--on-dark); }
.btn--outline:hover { background: rgba(255,255,255,.06); color: var(--on-dark); }
.btn--dark { background: var(--graphite); color: var(--ground); align-self: flex-start; }
.btn--dark:hover { background: #000; color: var(--ground); }

/* ---------- topo ---------- */
.topbar { background: var(--graphite); color: var(--on-dark); position: sticky; top: 0; z-index: 20; border-bottom: 1px solid #23282C; }
.topbar__in { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 68px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--on-dark); text-decoration: none; }
.brand svg { color: #D9894F; flex: none; }
.brand span { font: 600 24px/1 var(--display); letter-spacing: 1px; }
.brand:hover { color: var(--on-dark); }
.menu { display: flex; align-items: center; gap: 26px; font-size: 15px; }
.menu a:not(.btn) { color: var(--on-dark); text-decoration: none; padding: 10px 0; }
.menu a:not(.btn):hover { color: var(--copper-light); }
.menu-btn { display: none; background: none; border: 0; color: var(--on-dark); padding: 8px; cursor: pointer; }

/* ---------- hero ---------- */
.hero { background: var(--graphite); color: var(--on-dark); padding-block: 72px 96px; overflow: hidden; }
.hero__in { display: flex; flex-wrap: wrap; align-items: center; gap: 56px; }
.hero__text { flex: 999 1 520px; min-width: 0; display: flex; flex-direction: column; gap: 26px; }
.hero h1 { font: 600 clamp(42px, 6vw, 76px)/1.02 var(--display); letter-spacing: .5px; }
.lead { font-size: 20px; color: var(--on-dark-2); max-width: 580px; }
.actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero__art { flex: 1 1 340px; min-width: 0; display: flex; justify-content: center; }
.coil-art { width: 380px; max-width: 100%; height: auto; }

.eyebrow { font: 500 15px/1.3 var(--display); letter-spacing: 3px; text-transform: uppercase; color: var(--copper-dark); }
.eyebrow--light, .card .eyebrow--light { color: var(--copper-light); }

/* ---------- faixa ---------- */
.facts { background: var(--copper); color: var(--ink); padding-block: 28px; }
.facts__in { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 20px; }
.facts strong { display: block; font: 600 26px/1.2 var(--display); }
.facts span { font-size: 15px; color: #2A1608; }

/* ---------- seções ---------- */
.section { padding-block: 96px; }
.section--white { background: var(--white); border-block: 1px solid var(--line); }
.section--dark { background: var(--graphite); color: var(--on-dark); }
.section__head { display: flex; flex-direction: column; gap: 12px; max-width: 760px; margin-bottom: 40px; }
.section h2 { font: 600 clamp(32px, 4vw, 48px)/1.1 var(--display); }
.section__lead { color: var(--ink-2); font-size: 18px; }
.h-sub { font: 500 24px/1.2 var(--display); margin-top: 8px; }

/* ---------- cartões ---------- */
.cards { display: grid; gap: 24px; }
.cards--4 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.cards--2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.card { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; display: flex; flex-direction: column; gap: 14px; }
.card h3 { font: 500 27px/1.15 var(--display); }
.card p { color: var(--ink-2); }
.card__icon { width: 44px; height: 44px; fill: none; stroke: var(--copper); stroke-width: 1.6; }
.card--dark { background: var(--graphite); border-color: var(--graphite); color: var(--on-dark); }
.card--dark p { color: var(--on-dark-2); }
.card--dark .card__icon { stroke: var(--copper-light); }
.card--line { background: transparent; border-color: var(--line-dark); color: var(--on-dark); }
.card--line p:not(.eyebrow) { color: var(--on-dark-2); }
.card--line h3 { font-size: 32px; }
.link-arrow { color: var(--copper-light); font-weight: 600; margin-top: auto; }
.link-arrow:hover { color: #F4C29C; }
.link-arrow--dark { color: var(--copper-dark); }
.link-arrow--dark:hover { color: var(--copper); }

/* ---------- bobina ---------- */
.split { display: flex; flex-wrap: wrap; gap: 48px; align-items: center; }
.split--top { align-items: flex-start; }
.split__text { flex: 1 1 380px; min-width: 0; display: flex; flex-direction: column; gap: 18px; }
.cutaway { flex: 1 1 560px; min-width: 0; margin: 0; background: var(--ground); border-radius: 16px; padding: 24px; }
.cutaway svg { width: 100%; height: auto; display: block; }
.cutaway figcaption { margin-top: 12px; font-size: 14px; color: var(--ink-3); }
.parts { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 10px 20px; }
.parts li { display: flex; align-items: center; line-height: 1.3; }
.parts b { flex: none; display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; background: var(--graphite); color: var(--ground); font-size: 13px; margin-right: 8px; }
.parts__hl { color: var(--copper-dark); font-weight: 600; }
.parts__hl b { background: var(--copper); color: #fff; }
.checks { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 12px; }
.checks li { padding-left: 34px; position: relative; }
.checks li::before { content: ""; position: absolute; left: 2px; top: 6px; width: 18px; height: 10px; border-left: 3px solid var(--copper); border-bottom: 3px solid var(--copper); transform: rotate(-45deg); }

/* ---------- sob medida ---------- */
.specs { flex: 1 1 520px; min-width: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; }
.specs div { background: var(--white); border: 1px solid var(--line); border-radius: 12px; padding: 20px 22px; display: flex; flex-direction: column; }
.specs span { color: var(--ink-2); font-size: 15px; }

/* ---------- etapas ---------- */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; }
.steps li { background: var(--ground); border-radius: var(--radius); padding: 26px; display: flex; flex-direction: column; gap: 8px; }
.steps li > span:last-child { color: var(--ink-2); font-size: 15px; }
.steps b { font-size: 19px; }
.steps__n { font: 500 34px/1 var(--display); color: var(--copper); }
.steps__hl { background: var(--graphite) !important; color: var(--on-dark); }
.steps__hl > span:last-child { color: var(--on-dark-2) !important; }
.steps__hl .steps__n { color: var(--copper-light); }

/* ---------- clientes ---------- */
.clients { background: var(--graphite-2); padding-block: 64px; color: var(--on-dark); }
.clients__title { font: 500 22px/1.3 var(--display); letter-spacing: 2px; text-transform: uppercase; text-align: center; color: var(--on-dark-2); margin-bottom: 32px; }
.clients__grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px 24px; align-items: center; }
.clients__grid li { display: flex; justify-content: center; }
.clients__grid img { width: 200px; height: auto; opacity: .78; transition: opacity .2s; }
.clients__grid img:hover { opacity: 1; }

/* ---------- perguntas ---------- */
.faq__list { display: flex; flex-direction: column; gap: 12px; max-width: 860px; }
details { background: var(--white); border: 1px solid var(--line); border-radius: 12px; padding: 4px 22px; }
summary { cursor: pointer; font-weight: 600; padding: 16px 0; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; font: 500 24px/1 var(--display); color: var(--copper); }
details[open] summary::after { content: "−"; }
details p { padding-bottom: 18px; color: var(--ink-2); }

/* ---------- contato ---------- */
.contact { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 16px; }
.contact li { display: flex; flex-direction: column; }
.contact b { font-size: 14px; color: var(--ink-3); font-weight: 500; }
.contact a { color: var(--ink); text-decoration: none; font-size: 18px; }
.contact a:hover { color: var(--copper-dark); text-decoration: underline; }
.form { flex: 1 1 480px; min-width: 0; background: var(--ground); border: 1px solid var(--line); border-radius: 16px; padding: 32px; display: flex; flex-direction: column; gap: 16px; }
.form__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; }
.form label { display: flex; flex-direction: column; gap: 6px; font-size: 14px; color: var(--ink-2); }
.form input, .form select, .form textarea { font: 16px/1.4 var(--body); color: var(--ink); background: var(--white); border: 1px solid #D5CFC5; border-radius: 8px; padding: 12px; width: 100%; }
.form textarea { resize: vertical; }
.form__err { color: #B0392C; font-size: 14px; }
.form__note { font-size: 13px; color: var(--ink-3); }

/* ---------- rodapé ---------- */
.footer { background: var(--graphite); color: #9EA2A6; padding-block: 36px 96px; font-size: 14px; }
.footer__in { display: flex; flex-wrap: wrap; gap: 16px; justify-content: space-between; align-items: center; }
.footer__brand { font: 600 20px/1 var(--display); color: var(--on-dark); letter-spacing: 1px; }

/* ---------- WhatsApp flutuante ---------- */
.wa-float { position: fixed; right: 20px; bottom: calc(20px + env(safe-area-inset-bottom, 0px)); z-index: 30; display: flex; align-items: center; gap: 8px; background: #1F8F4E; color: #fff; text-decoration: none; font-weight: 600; padding: 14px 18px; border-radius: 999px; box-shadow: 0 10px 28px rgba(0,0,0,.28); }
.wa-float:hover { background: #18773F; color: #fff; }

/* ---------- celular ---------- */
@media (max-width: 860px) {
  .menu-btn { display: block; }
  .menu { display: none; position: absolute; left: 0; right: 0; top: 100%; background: var(--graphite); flex-direction: column; align-items: stretch; gap: 0; padding: 8px 24px 20px; border-bottom: 1px solid #23282C; }
  .menu.is-open { display: flex; }
  .menu a:not(.btn) { padding: 14px 0; border-bottom: 1px solid #23282C; }
  .menu .btn { margin-top: 14px; }
  .topbar__in { position: relative; }
  .clients__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .clients { padding-block: 48px; }
  .clients__title { font-size: 18px; margin-bottom: 20px; }
  .wrap { padding-inline: 20px; }
  .section { padding-block: 56px; }
  .section__head { margin-bottom: 28px; }
  .section__lead { font-size: 17px; }
  .eyebrow { font-size: 13px; letter-spacing: 2px; }
  .wa-float span { display: none; }
  .wa-float { padding: 16px; }

  /* hero: ilustração menor e botões do mesmo tamanho */
  .hero { padding-block: 40px 48px; }
  .hero__in { gap: 32px; }
  .hero__text { gap: 20px; }
  .lead { font-size: 18px; }
  .actions .btn { flex: 1 1 100%; }
  .coil-art { width: 210px; }

  /* faixa em 2×2 */
  .facts { padding-block: 22px; }
  .facts__in { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
  .facts strong { font-size: 21px; }
  .facts span { font-size: 13px; line-height: 1.35; display: block; }

  /* cartões mais compactos */
  .cards { gap: 14px; }
  .card { padding: 22px; gap: 10px; }
  .card h3 { font-size: 23px; }
  .card__icon { width: 36px; height: 36px; }
  .card--line h3 { font-size: 26px; }

  /* ilustrações de ponta a ponta, para ficarem maiores */
  .split { gap: 32px; }
  .cutaway { margin-inline: -20px; border-radius: 0; padding: 12px 8px 16px; }
  .cutaway figcaption { padding-inline: 12px; font-size: 13px; }
  .h-sub { font-size: 22px; }

  /* sob medida em 2 colunas */
  .specs { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .specs div { padding: 14px; font-size: 15px; line-height: 1.35; gap: 4px; }
  .specs span { font-size: 13px; }

  /* etapas: número ao lado do texto */
  .steps { gap: 10px; }
  .steps li { display: grid; grid-template-columns: 44px 1fr; column-gap: 12px; row-gap: 2px; padding: 16px 18px; }
  .steps__n { grid-row: span 2; font-size: 28px; }
  .steps b { font-size: 17px; }

  /* perguntas e formulário */
  details { padding: 2px 18px; }
  summary { padding: 14px 0; }
  .form { padding: 20px; }
  .footer { padding-block: 32px 96px; }
}