/* PRIME LINE — estilos da landing page. Tokens de cor e tipografia em :root. */

:root {

  --color-bg-primary:   #18191C;
  --color-bg-secondary: #21201E;
  --color-text-primary: #F2EEE8;
  --color-text-secondary: #BAB6B0;
  --color-accent:       #DBB688;
  --color-on-accent:    #18191C;
  --color-border:       rgba(242, 238, 232, .14);
  --color-border-accent: rgba(219, 182, 136, .45);
  --color-focus:        #DBB688;

  --font-display: "TeX Gyre Adventor", "Century Gothic", "URW Gothic", Futura, sans-serif;
  --font-text: Inter, "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;

  --space-1: .5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6rem;

  --radius-none: 0;
  --radius-sm: 2px;
  --tap: 3rem;
  --header-h: 4.5rem;
  --pad: 1.25rem;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-padding-top: 1rem; background: var(--color-bg-primary); }
body { margin: 0; font: 1rem/1.65 var(--font-text); color: var(--color-text-secondary); background: var(--color-bg-primary);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
img { display: block; max-width: 100%; height: auto; }

h1, h2, h3 { font-family: var(--font-display); color: var(--color-text-primary); font-weight: 400; margin: 0 0 var(--space-2); letter-spacing: -.01em; }
h1 { font-size: clamp(1.75rem, 1.2rem + 2.6vw, 2.75rem); line-height: 1.12; }
h2 { font-size: clamp(1.6rem, 1.25rem + 1.5vw, 2.25rem); line-height: 1.15; }
h3 { font-size: clamp(1.25rem, 1.1rem + .6vw, 1.5rem); line-height: 1.2; }
p { margin: 0 0 var(--space-2); max-width: 60ch; }
figure { margin: 0; }
figcaption { font-size: .875rem; color: var(--color-text-secondary); padding-top: .6rem; letter-spacing: .01em; }
ul[role="list"] { list-style: none; margin: 0; padding: 0; }
a { color: var(--color-text-primary); text-underline-offset: .2em; text-decoration-thickness: 1px; }
a:hover { color: var(--color-accent); }

.wrap { width: 100%; max-width: 72rem; margin-inline: auto; padding-inline: var(--pad); }
.hero-grid > *, .solutions > li, .solution article > *, .pair > *, .how-grid > * { min-width: 0; }

:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 3px; }
#conteudo:focus { outline: none; }

.skip { position: absolute; left: .5rem; top: -5rem; z-index: 50; background: var(--color-text-primary); color: var(--color-bg-primary);
  padding: .75rem 1rem; min-height: var(--tap); font-weight: 600; }
.skip:focus { top: .5rem; }

.site-header { background: var(--color-bg-primary); border-bottom: 1px solid var(--color-border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-2); min-height: var(--header-h); }
.logo { display: inline-flex; align-items: center; min-height: var(--tap); }
.logo { text-decoration: none; }
.logo-img { width: auto; height: 2.5rem;

  font: 700 .8rem/2.5rem var(--font-display); letter-spacing: .12em; color: var(--color-text-primary); }
.site-header .btn-header { display: none; }

.btn { display: inline-flex; align-items: center; justify-content: center; min-height: var(--tap); padding: .8rem 1.6rem;
  border: 1px solid var(--color-accent); border-radius: var(--radius-sm); font: 600 .95rem/1.2 var(--font-text); letter-spacing: .02em; text-decoration: none; }
.btn-primary { background: var(--color-accent); color: var(--color-on-accent); }
.btn-primary:hover { background: transparent; color: var(--color-accent); }
.btn-light { background: var(--color-accent); color: var(--color-on-accent); border-color: var(--color-accent); }
.btn-light:hover { background: transparent; color: var(--color-accent); }
.btn-block { width: 100%; }

.text-link { display: inline-flex; align-items: center; min-height: var(--tap); color: var(--color-text-primary); font-weight: 500; }
.cta-note { font-size: .875rem; color: var(--color-text-secondary); margin: .6rem 0 0; }

.hero { padding-block: var(--space-4) var(--space-5); }
.hero-grid { display: grid; gap: var(--space-4); }
.hero-copy h1::before { content: ""; display: block; width: 2.5rem; height: 1px; background: var(--color-accent); margin-bottom: var(--space-3); }
.lead { font-size: 1.125rem; color: var(--color-text-secondary); }
.hero-actions { display: grid; justify-items: start; gap: .25rem; margin-top: var(--space-3); }
.hero-actions .btn { width: 100%; }

.art img { border: 1px solid var(--color-border); }
.art-hero { width: 100%; max-width: 30rem; }

.section { padding-block: var(--space-5); border-top: 1px solid var(--color-border); }
.section-alt { background: var(--color-bg-secondary); }

#solucoes h2, #projetos h2 { font: 700 .8rem/1.3 var(--font-display); letter-spacing: .24em; text-transform: uppercase; color: var(--color-accent);
  margin-bottom: var(--space-4); display: flex; align-items: center; gap: var(--space-2); }
#solucoes h2::after, #projetos h2::after { content: ""; flex: 1; height: 1px; background: var(--color-border); }

.solutions { display: grid; gap: var(--space-5); }
.solution .art { width: 100%; max-width: 30rem; margin-bottom: var(--space-3); }
.solution h3::before { content: ""; display: block; width: 1.75rem; height: 1px; background: var(--color-accent); margin-bottom: var(--space-2); }

.project + .project { margin-top: var(--space-5); padding-top: var(--space-4); border-top: 1px solid var(--color-border); }
.pair { display: grid; gap: var(--space-3); }
.pair .art { max-width: 30rem; }
.project-secondary h3 { font-size: 1.2rem; }

.how-grid { display: grid; gap: var(--space-3); }
.steps { list-style: none; margin: var(--space-3) 0 0; padding: 0; counter-reset: step; display: grid; gap: 0; border-top: 1px solid var(--color-border); }
.steps li { counter-increment: step; display: flex; flex-wrap: wrap;  align-items: baseline; gap: var(--space-2); padding-block: var(--space-2);
  border-bottom: 1px solid var(--color-border); font: 400 1.25rem/1.3 var(--font-display); color: var(--color-text-primary); }
.steps li::before { content: counter(step, decimal-leading-zero); font: 700 .75rem/1 var(--font-display); letter-spacing: .2em; color: var(--color-accent); min-width: 2rem; }

.cta-sticky { position: sticky; bottom: 0; z-index: 10; background: var(--color-bg-primary); border-top: 1px solid var(--color-border);
  padding: .6rem var(--pad) calc(.6rem + env(safe-area-inset-bottom)); }

.final { background: var(--color-bg-secondary); padding-block: var(--space-5); border-top: 1px solid var(--color-border-accent); }
.final h2 { font-size: clamp(1.75rem, 1.3rem + 2vw, 2.6rem); }
.final p { color: var(--color-text-secondary); }
.phone { font: 400 1.25rem/1.3 var(--font-display); color: var(--color-text-primary); letter-spacing: .04em; }

.site-footer { background: var(--color-bg-primary); border-top: 1px solid var(--color-border); padding-block: var(--space-4); font-size: .9rem; }
.footer-inner { display: grid; gap: .5rem; }
.footer-brand { font: 700 .8rem/1.3 var(--font-display); letter-spacing: .24em; text-transform: uppercase; color: var(--color-text-primary); margin: 0; }
.footer-links a { display: inline-flex; align-items: center; min-height: var(--tap); color: var(--color-text-secondary); }
.footer-links a:hover { color: var(--color-accent); }
.footer-links li { min-height: var(--tap); display: flex; align-items: center; }
.copy { font-size: .8rem; color: var(--color-text-secondary); margin: 0; }

@media (min-width: 41em) {
  :root { --pad: 2rem; }
  .pair { grid-template-columns: repeat(2, minmax(0, 26rem)); }
  .pair .art { max-width: none; }
  .pair-single { grid-template-columns: minmax(0, 26rem); }

  .project-secondary .pair { grid-template-columns: repeat(2, minmax(0, 17.5rem)); }
  .solution article { display: grid; grid-template-columns: minmax(17.5rem, 1fr) minmax(15rem, 1fr); column-gap: var(--space-2); align-items: center; }
  .solution .art { grid-column: 1; grid-row: 1 / span 2; margin: 0; max-width: 26rem; }
  .solution h3, .solution p { grid-column: 2; }
  .solution h3 { align-self: end; }
  .solution p { align-self: start; }
  .solution:nth-child(even) article { grid-template-columns: minmax(15rem, 1fr) minmax(17.5rem, 1fr); }
  .solution:nth-child(even) .art { grid-column: 2; justify-self: end; }
  .solution:nth-child(even) h3, .solution:nth-child(even) p { grid-column: 1; }
}

@media (min-width: 55em) {
  .site-header { position: sticky; top: 0; z-index: 20; }
  html { scroll-padding-top: calc(var(--header-h) + 1rem); }
  .site-header .btn-header { display: inline-flex; background: transparent; color: var(--color-text-primary); }
  .site-header .btn-header:hover { color: var(--color-accent); }
  .cta-sticky { display: none; }
  .hero { padding-block: var(--space-5) var(--space-6); }

  .hero-grid { grid-template-columns: minmax(0, 1fr) minmax(0, clamp(24rem, 40vw, 28rem)); align-items: center; column-gap: 3rem; }
  h1 { font-size: clamp(2.1rem, 1.3rem + 1.8vw, 3rem); }
  .hero-actions .btn { width: auto; }
  .art-hero { max-width: none; }
  .project-secondary .pair { grid-template-columns: repeat(2, minmax(0, 22rem)); }
  .solution article { column-gap: var(--space-5); }
  .section { padding-block: var(--space-6); }
  .steps { grid-template-columns: repeat(3, 1fr); column-gap: var(--space-4); border-top: 0; }
  .steps li { flex-direction: column; gap: var(--space-2); border-bottom: 0; border-top: 1px solid var(--color-border-accent); }
  .final { padding-block: var(--space-6); }
  .footer-inner { grid-template-columns: 1fr auto; align-items: center; }
}

.legal { padding-block: var(--space-4) var(--space-5); overflow-wrap: break-word; }
.legal h2 { font-size: 1.25rem; margin: var(--space-4) 0 var(--space-1); }
.legal-date { font-size: .875rem; }
.legal-list { margin: 0 0 var(--space-2); padding-left: 1.25rem; max-width: 60ch; }
.legal-back { margin-top: var(--space-4); }

@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } }