:root {
  --color-forest: #0d2318;
  --color-forest-light: #12a862;
  --color-sand: #faf7f0;
  --color-stone: #ded7c7;
  --color-terracotta: #d1451f;
  --color-ink: #16201a;

  --font-serif: "Fraunces", Georgia, serif;
  --font-sans: "Archivo", -apple-system, sans-serif;

  --container-max: 1200px;
  --gutter: 24px;

  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 40px;
  --space-5: 64px;
  --space-6: 96px;
  --space-7: 120px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--color-sand);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.6;
}
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 var(--space-3);
  color: var(--color-forest-light);
}
h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(1.8rem, 3.2vw, 2.6rem); }
h3 { font-size: 1.3rem; }
p { margin: 0 0 var(--space-3); max-width: 68ch; }
a { color: var(--color-forest); }
img, svg { max-width: 100%; }

.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--gutter);
}
section { padding-block: var(--space-6); }
@media (max-width: 720px) {
  section { padding-block: var(--space-4); }
  body { font-size: 16px; }
}

.btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-weight: 700;
  text-decoration: none;
  padding: var(--space-2) var(--space-4);
  border: 2px solid var(--color-forest-light);
  color: var(--color-forest-light);
  transition: background-color .15s ease, color .15s ease;
}
.btn:hover { background: var(--color-forest-light); color: var(--color-sand); }
.btn--solid { background: var(--color-terracotta); border-color: var(--color-terracotta); color: var(--color-sand); }
.btn--solid:hover { background: #a23a18; border-color: #a23a18; }

/* Header / Nav */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: var(--color-sand);
  border-bottom: 1px solid var(--color-stone);
}
.site-header__row {
  display: flex; align-items: center; justify-content: space-between;
  padding-block: var(--space-2);
}
.wordmark { display: flex; align-items: center; gap: var(--space-1); text-decoration: none; color: var(--color-forest-light); }
.wordmark__brand { display: inline-flex; align-items: center; gap: var(--space-1); }
.wordmark__mark { color: var(--color-terracotta); }
.wordmark__text { font-family: var(--font-serif); font-weight: 600; font-size: 1.25rem; }

.primary-nav__list { list-style: none; display: flex; gap: var(--space-4); margin: 0; padding: 0; align-items: center; }
.primary-nav a { text-decoration: none; font-weight: 500; color: var(--color-ink); }
.primary-nav a:hover { color: var(--color-terracotta); }
.primary-nav__cta { border: 2px solid var(--color-forest-light); padding: var(--space-1) var(--space-3); color: var(--color-forest-light) !important; }
.primary-nav__item--active { color: var(--color-terracotta) !important; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--color-forest); display: block; }

@media (max-width: 780px) {
  .nav-toggle { display: flex; }
  .primary-nav { position: absolute; top: 100%; left: 0; right: 0; background: var(--color-sand); border-bottom: 1px solid var(--color-stone); display: none; }
  .primary-nav.is-open { display: block; }
  .primary-nav__list { flex-direction: column; align-items: flex-start; padding: var(--space-3) var(--gutter); gap: var(--space-2); }
}

/* Footer */
.site-footer { background: var(--color-forest); color: var(--color-sand); margin-top: var(--space-7); }
.site-footer__grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--space-4); padding-block: var(--space-6); }
.site-footer h3 { color: var(--color-sand); font-family: var(--font-sans); font-size: .9rem; text-transform: uppercase; letter-spacing: .05em; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer a { color: var(--color-stone); text-decoration: none; }
.site-footer a:hover { color: var(--color-sand); }
.site-footer__legal { border-top: 1px solid var(--color-forest-light); padding-block: var(--space-2); font-size: .85rem; color: var(--color-stone); }
@media (max-width: 780px) {
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
}

/* Diagrams / icon cards */
.flow-diagram { width: 100%; max-width: 480px; display: block; margin-inline: auto; }
.compare-diagram { width: 100%; max-width: 620px; margin-block: var(--space-3); }
.icon-card { padding: var(--space-3); border: 1px solid var(--color-stone); }
.icon-card__badge {
  width: 52px; height: 52px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: var(--space-2);
}
.icon-card__icon { color: var(--color-sand); }
.icon-card h3 { margin-bottom: var(--space-1); }
.services-grid .icon-card:nth-child(3n+1) .icon-card__badge { background: var(--color-forest-light); }
.services-grid .icon-card:nth-child(3n+2) .icon-card__badge { background: var(--color-terracotta); }
.services-grid .icon-card:nth-child(3n+3) .icon-card__badge { background: var(--color-forest); }

/* Quem somos: icon mosaic */
.quem-somos { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: var(--space-5); align-items: center; }
@media (max-width: 900px) {
  .quem-somos { grid-template-columns: 1fr; }
  .mosaic { order: -1; max-width: 280px; margin-inline: auto; }
}
.mosaic { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.mosaic__row { display: flex; gap: 8px; }
.mosaic__tile {
  width: 64px; height: 64px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: var(--color-sand);
}
.mosaic__tile svg { width: 28px; height: 28px; }
.mosaic__tile--a { background: var(--color-forest-light); }
.mosaic__tile--b { background: var(--color-terracotta); }
.mosaic__tile--c { background: var(--color-forest); }
@media (max-width: 420px) { .mosaic__tile { width: 52px; height: 52px; } .mosaic__tile svg { width: 22px; height: 22px; } }

/* Flow diagram icon nodes */
.flow-diagram__icon { color: var(--color-sand); }
.flow-diagram__label { font-family: var(--font-sans); font-size: 11px; fill: var(--color-ink); }

/* Home page — hero: real photo, duotone via mix-blend-mode, layered panel on top */
.hero-stack { position: relative; padding-top: var(--space-7); padding-bottom: var(--space-6); overflow: hidden; min-height: 560px; display: flex; align-items: center; }
.hero-stack__bg { position: absolute; inset: 0; z-index: 0; background: var(--color-forest); }
.hero-stack__bg img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: center 35%;
  filter: grayscale(1) contrast(1.15) brightness(0.65);
  display: block;
}
.hero-stack__scrim {
  position: absolute; inset: 0;
  background: linear-gradient(150deg, var(--color-forest) 15%, var(--color-forest-light) 115%);
  mix-blend-mode: color;
}
.hero-stack__scrim::after {
  content: "";
  position: absolute; inset: 0;
  background: rgba(5,14,10,0.35);
}
.hero-stack__content { position: relative; z-index: 1; width: 100%; }
.hero-stack__accent {
  position: absolute;
  top: -18px;
  left: 28px;
  width: 60%;
  max-width: 460px;
  height: 120px;
  background: var(--color-terracotta);
  z-index: 0;
}
.hero-stack__panel {
  position: relative;
  z-index: 1;
  background: rgba(13, 35, 24, 0.78);
  backdrop-filter: blur(10px) saturate(1.1);
  -webkit-backdrop-filter: blur(10px) saturate(1.1);
  border: 1px solid rgba(250, 247, 240, 0.12);
  color: var(--color-sand);
  padding: var(--space-5);
  max-width: 620px;
  margin-left: var(--space-3);
  box-shadow: 16px 16px 0 var(--color-sand);
}
.hero-stack__panel h1 {
  color: var(--color-sand);
  font-size: clamp(2.4rem, 5.4vw, 3.8rem);
  line-height: 1.05;
  margin-bottom: var(--space-3);
}
.hero-stack__lede { color: var(--color-stone); font-size: 1.1rem; margin-bottom: var(--space-4); }
@media (max-width: 640px) {
  .hero-stack { padding-top: var(--space-5); }
  .hero-stack__accent { display: none; }
  .hero-stack__panel { margin-left: 0; box-shadow: 8px 8px 0 var(--color-sand); padding: var(--space-4); }
}
.services-grid .icon-card { grid-column: span 4; }
@media (max-width: 900px) { .services-grid .icon-card { grid-column: span 6; } }
@media (max-width: 560px) { .services-grid .icon-card { grid-column: span 12; } }
.cta-final { text-align: center; background: var(--color-forest-light); color: var(--color-sand); }
.cta-final h2 { color: var(--color-sand); }

.why-grid { margin-top: var(--space-3); }
.why-card { grid-column: span 4; padding: var(--space-3); border-top: 3px solid var(--color-forest-light); background: #fff; }
.why-card__check { width: 28px; height: 28px; margin-bottom: var(--space-2); }
@media (max-width: 900px) { .why-card { grid-column: span 6; } }
@media (max-width: 560px) { .why-card { grid-column: span 12; } }

/* Inner-page header: photo + duotone band, shorter than home hero */
.page-header { position: relative; overflow: hidden; min-height: 300px; display: flex; align-items: flex-end; }
.page-header__bg { position: absolute; inset: 0; z-index: 0; background: var(--color-forest); }
.page-header__bg img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: center 35%;
  filter: grayscale(1) contrast(1.15) brightness(0.6);
  display: block;
}
.page-header__scrim { position: absolute; inset: 0; background: linear-gradient(150deg, var(--color-forest) 10%, var(--color-forest-light) 130%); mix-blend-mode: color; }
.page-header__scrim::after { content: ""; position: absolute; inset: 0; background: rgba(5,14,10,0.55); }
.page-header__content { position: relative; z-index: 1; padding-block: var(--space-4) var(--space-5); }
.page-header__content h1 { color: var(--color-sand); margin-bottom: var(--space-2); text-shadow: 0 2px 12px rgba(0,0,0,0.35); }
.page-header__content p { color: var(--color-stone); max-width: 60ch; margin-bottom: 0; text-shadow: 0 1px 8px rgba(0,0,0,0.4); }
@media (max-width: 640px) { .page-header { min-height: 200px; } }

/* Servicos page */
.service-detail { border-top: 1px solid var(--color-stone); padding-block: var(--space-5); }
.service-detail:first-of-type { border-top: none; }

/* Sustentabilidade page */
.stat-list { list-style: none; padding: 0; display: grid; gap: var(--space-3); }
.stat-list li { padding: var(--space-3); border-left: 3px solid var(--color-terracotta); background: #fff; }
.accordion__item { border-bottom: 1px solid var(--color-stone); }
.accordion__trigger {
  width: 100%; text-align: left; background: none; border: 0; cursor: pointer;
  font-family: var(--font-sans); font-weight: 700; font-size: 1.05rem;
  padding-block: var(--space-3); color: var(--color-ink);
}
.accordion__panel { padding-bottom: var(--space-3); }

/* Quote form */
.quote-panel form { margin-top: var(--space-4); max-width: 760px; }
.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-3); margin-bottom: var(--space-3); }
.quote-panel label { display: block; font-size: 0.9rem; font-weight: 700; color: var(--color-ink); margin-bottom: var(--space-3); }
.field-grid label { margin-bottom: 0; }
.quote-panel label span { display: block; margin-bottom: 6px; }
.quote-panel input, .quote-panel select, .quote-panel textarea {
  width: 100%; font-family: var(--font-sans); font-size: 1rem; font-weight: 400;
  padding: var(--space-2); border: 1px solid var(--color-stone); background: #fff; color: var(--color-ink);
}
.quote-panel input:focus, .quote-panel select:focus, .quote-panel textarea:focus { outline: 2px solid var(--color-forest-light); outline-offset: 1px; }
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-note { margin-top: var(--space-2); font-size: 0.9rem; }
.form-note[data-state="success"] { color: var(--color-forest-light); }
.form-note[data-state="error"] { color: var(--color-terracotta); }
@media (max-width: 640px) { .field-grid { grid-template-columns: 1fr; } }