:root {
  --beige: #F5F2ED;
  --white: #FFFFFF;
  --amber: #8B6A4B;
  --black: #1A1A1A;
  --gold: #CBAF87;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 100%; /* 1rem = 16px */
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--beige);
  color: var(--black);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5 {
  font-family: 'Playfair Display', serif;
  font-weight: 500;
}

/* --- Botões --- */
.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  background-color: var(--amber);
  color: var(--black);
  border: none;
  border-radius: 0.125rem;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
  will-change: transform, background-color;
}

.btn:hover {
  background-color: var(--gold);
  transform: translateY(-0.1875rem);
  box-shadow: 0 0.3125rem 0.9375rem rgba(139, 106, 75, 0.2);
}

.btn-outline {
  background-color: transparent;
  border: 0.0625rem solid var(--amber);
  color: var(--white);
}

.btn-outline:hover {
  background-color: var(--amber);
  color: var(--white);
}

/* --- Header --- */
header {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 0.9375rem 0;
  background-color: rgba(245, 242, 237, 0.95);
  box-shadow: 0 0.125rem 0.625rem rgba(0, 0, 0, 0.05);
  transition: padding 0.4s ease, background-color 0.4s ease;
  will-change: padding, background-color;
}

header.scrolled {
  padding: 0.625rem 0;
  background-color: rgba(255, 255, 255, 0.98);
}

/* --- Layouts com rem --- */
.container {
  width: 100%;
  max-width: 75rem; /* 1200px */
  margin: 0 auto;
  padding: 0 1.25rem; /* 20px */
}

/* ... adapte todo o resto trocando px por rem (ex.: 20px → 1.25rem) ... */

/* --- Animações --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(1.25rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in, .hero h1, .hero p {
  opacity: 0;
  transform: translateY(1.25rem);
  will-change: opacity, transform;
  transition: all 1s ease;
}

.fade-in.active { opacity: 1; transform: translateY(0); }

/* ... restantes das seções ... */