/* ============================================================
   Reset + Utilitários Comuns
   ============================================================ */

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, textarea, select { font: inherit; }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section {
  padding: var(--section-padding) 0;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.section-subtitle {
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  max-width: 560px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-align: center;
}

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

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
}

.btn-whatsapp {
  background: #25d366;
  color: #fff;
}
.btn-whatsapp:hover { background: #1da851; }

.btn-lg { padding: 1rem 2rem; font-size: 1.05rem; }

/* Cards */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
}

/* Grid helpers */
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1.25rem; }

/* Placeholder images */
.placeholder-img {
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 2rem;
  aspect-ratio: 4/3;
}

.placeholder-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

/* Badge */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  background: var(--color-primary-light);
  color: var(--color-primary);
}

/* Stars */
.stars { color: #f59e0b; letter-spacing: 2px; }

/* Nav */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 0.875rem 0;
}

.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--color-primary);
}

.nav-links {
  display: flex;
  gap: 1.25rem;
  font-size: 0.9rem;
}

.nav-links a:hover { color: var(--color-primary); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text);
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-surface);
    flex-direction: column;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
}

/* Footer */
.site-footer {
  background: var(--color-text);
  color: rgba(255,255,255,.85);
  padding: 2.5rem 0 1.5rem;
  font-size: 0.9rem;
}

.site-footer a { color: rgba(255,255,255,.7); }
.site-footer a:hover { color: #fff; }

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.15);
  padding-top: 1.25rem;
  text-align: center;
  color: rgba(255,255,255,.5);
  font-size: 0.8rem;
}

/* WhatsApp float */
.whatsapp-float {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 56px;
  height: 56px;
  background: #25d366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  box-shadow: var(--shadow-lg);
  z-index: 200;
  transition: transform var(--transition);
}
.whatsapp-float:hover { transform: scale(1.08); }

/* Form */
.form-group { margin-bottom: 1rem; }
.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color var(--transition);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
}