/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  color: #1f1f1f;
}

.bg-paper { background-color: #faf7f2; }

/* Layout */
.container {
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.page {
  padding: 2.5rem 0 4rem;
}

.page-title {
  font-size: 2rem;
  color: #2a1b10;
  margin-bottom: 0.5rem;
}

.page-intro {
  color: #5b4a3b;
  margin-bottom: 2rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(250, 247, 242, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.logo-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.logo-img {
  height: 2rem;
  width: auto;
  border-radius: 4px;
}

.logo-text {
  font-weight: 700;
  font-size: 1.05rem;
  color: #3d2b1f;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.main-nav a {
  text-decoration: none;
  color: #333;
  font-size: 0.95rem;
}

.main-nav a:hover,
.main-nav a.active {
  color: #3d2b1f;
  text-decoration: underline;
}

/* Secções de cartão */
.card-section {
  background: #fff;
  border-radius: 0.8rem;
  padding: 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.04);
}

.card-section h2 {
  font-size: 1.1rem;
  color: #2e2015;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid #e8ddd0;
}

/* Grupos de rádio */
.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.radio-group label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  border: 1px solid #c9b7a2;
  cursor: pointer;
  font-size: 0.95rem;
  color: #3d2b1f;
  transition: background 0.15s, border-color 0.15s;
}

.radio-group label:has(input:checked) {
  background-color: #3d2b1f;
  color: #fff;
  border-color: #3d2b1f;
}

.radio-group input[type="radio"] {
  accent-color: #3d2b1f;
}

/* Campos de formulário */
.field-row {
  margin-bottom: 1rem;
}

.field-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  color: #3f3125;
  margin-bottom: 0.3rem;
}

.field-select,
.field-input,
.field-textarea {
  width: 100%;
  padding: 0.55rem 0.7rem;
  border-radius: 0.4rem;
  border: 1px solid #c9b7a2;
  font-size: 0.95rem;
  background-color: #fdfaf6;
  color: #1f1f1f;
  font-family: inherit;
}

.field-select:focus,
.field-input:focus,
.field-textarea:focus {
  outline: 2px solid #b5977c;
  outline-offset: 1px;
}

.field-hint {
  font-size: 0.82rem;
  color: #7d6b5e;
  margin-top: 0.25rem;
}

/* Sub-opções de madeira */
.subopcoes {
  margin-top: 0.75rem;
}

.hidden { display: none !important; }

/* Botão link "Outro tipo…" */
.btn-link {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  font-family: inherit;
}

.btn-outro {
  margin-top: 0.75rem;
  font-size: 0.88rem;
  color: #7b6a5e;
  text-decoration: underline;
}

.btn-outro:hover { color: #3d2b1f; }

/* Botão principal */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.5rem;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-size: 0.95rem;
  font-family: inherit;
  background-color: #3d2b1f;
  color: #fff;
  transition: opacity 0.15s;
}

.btn-primary:hover { opacity: 0.88; }
.btn-primary:disabled { opacity: 0.55; cursor: not-allowed; }

/* Mensagens de resposta do formulário */
.form-msg {
  margin-top: 0.75rem;
  font-size: 0.9rem;
  min-height: 1.2em;
}

.form-msg.ok { color: #2e7d32; }
.form-msg.erro { color: #c62828; }

/* Responsivo */
@media (max-width: 600px) {
  .header-inner { gap: 0.5rem; }
  .main-nav { gap: 1rem; font-size: 0.88rem; }
  .logo-text { font-size: 0.9rem; }
}