/* Refem Valor — sistema de disseny base */

:root {
  --color-bg: #f9f9f4;
  --color-bg-alt: #eeece2;
  --color-surface: #ffffff;
  --color-text: #2a261f;
  --color-text-muted: #6b6459;
  --color-border: #ddd7c8;
  --color-primary: #1d4d3b;
  --color-primary-dark: #123327;
  --color-accent: #a15b3d;
  --color-accent-dark: #82472f;
  --color-focus: #1d4d3b;

  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --radius: 4px;
  --max-width: 1140px;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.55;
  font-size: 17px;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2rem, 4.5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
h3 { font-size: 1.2rem; }

p { margin: 0 0 1em; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 64px 0;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section-dark {
  background: var(--color-primary);
  color: #f2f1ec;
}

.section-dark .text-muted { color: #c7cbc3; }

.eyebrow {
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  font-weight: 600;
  color: var(--color-accent-dark);
  margin-bottom: 0.6em;
  display: block;
}

.section-dark .eyebrow { color: #c9b48f; }

.text-muted {
  color: var(--color-text-muted);
}

.lede {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 62ch;
}

/* Header / navigation */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.logo {
  display: flex;
  flex-direction: column;
  line-height: 1;
  gap: 4px;
  text-decoration: none;
}

.logo-refem {
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: -0.02em;
  color: var(--color-primary);
}

.logo-valor {
  font-weight: 700;
  font-size: 0.62rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-text);
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  border-bottom-color: var(--color-accent);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 18px;
}

.lang-switch {
  display: flex;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  overflow: hidden;
  font-size: 0.82rem;
  font-weight: 600;
}

.lang-switch a {
  padding: 6px 12px;
  text-decoration: none;
  color: var(--color-text-muted);
}

.lang-switch a[aria-current="true"] {
  background: var(--color-primary);
  color: #fff;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.nav-toggle span,
.nav-toggle::before,
.nav-toggle::after {
  content: "";
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  margin: 5px 0;
}

/* Buttons */

.btn {
  display: inline-block;
  padding: 13px 26px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
}

.btn-outline {
  background: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
}

.section-dark .btn-outline {
  border-color: #f2f1ec;
  color: #f2f1ec;
}

.section-dark .btn-outline:hover {
  background: #f2f1ec;
  color: var(--color-primary);
}

.btn-accent {
  background: var(--color-accent);
  color: #fff;
}

.btn-accent:hover {
  background: var(--color-accent-dark);
}

.cta-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 1.8em;
}

/* Hero */

.hero {
  padding: 72px 0 56px;
}

.hero-solo {
  max-width: 720px;
}

/* Cards / grids */

.grid {
  display: grid;
  gap: 28px;
}

.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
}

.step-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px 26px 26px;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-weight: 700;
  margin-bottom: 16px;
}

.icon {
  width: 32px;
  height: 32px;
  stroke: var(--color-accent-dark);
  fill: none;
  stroke-width: 1.6;
  margin-bottom: 14px;
}

/* Lists */

.check-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.check-list li {
  padding-left: 30px;
  position: relative;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-focus);
}

.check-list li::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  width: 8px;
  height: 4px;
  border-left: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: rotate(-45deg);
}

/* Table */

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface);
}

th, td {
  text-align: left;
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.95rem;
}

th {
  background: var(--color-bg-alt);
  font-weight: 700;
}

/* Quote / stat band */

.stat-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-band strong {
  display: block;
  font-size: 2.1rem;
  color: var(--color-accent);
}

/* Form */

.form-grid {
  display: grid;
  gap: 18px;
  max-width: 560px;
}

label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 6px;
}

input, textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 1rem;
  background: var(--color-surface);
  color: var(--color-text);
}

input:focus, textarea:focus {
  outline: 2px solid var(--color-focus);
  outline-offset: 1px;
}

.field-hint {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.is-hidden {
  display: none;
}

.form-status {
  font-size: 0.95rem;
  font-weight: 600;
  padding: 12px 14px;
  border-radius: var(--radius);
  display: none;
}

.form-status.is-visible { display: block; }
.form-status.success { background: #dfe9e0; color: #1f4a2c; }
.form-status.error { background: #f3dede; color: #7a2323; }

/* Footer */

.site-footer {
  background: var(--color-primary-dark);
  color: #c7cbc3;
  padding: 48px 0 24px;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}

.site-footer h4 {
  color: #f2f1ec;
  font-size: 0.95rem;
  margin-bottom: 12px;
}

.site-footer a {
  color: #c7cbc3;
  text-decoration: none;
}

.site-footer a:hover {
  color: #fff;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.footer-bottom {
  border-top: 1px solid #33392f;
  padding-top: 18px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.82rem;
  color: #9aa094;
}

/* Page header (interior pages) */

.page-header {
  padding: 56px 0 40px;
  border-bottom: 1px solid var(--color-border);
}

/* Responsive */

@media (max-width: 860px) {
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .stat-band { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 720px) {
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 16px;
    display: none;
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links a {
    display: block;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-toggle {
    display: block;
  }

  .nav-right .lang-switch {
    order: 2;
  }
}

@media (max-width: 480px) {
  body { font-size: 16px; }
  .section { padding: 44px 0; }
  .hero { padding: 40px 0 32px; }
}