.button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0 var(--space-5);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1;
  transition: color var(--duration-fast), background-color var(--duration-fast), border-color var(--duration-fast), transform var(--duration-fast);
}

.button svg {
  width: 1.125rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  transition: transform var(--duration-fast) var(--ease-standard);
}

.button:hover svg {
  transform: translateX(0.25rem);
}

.button:active {
  transform: translateY(1px);
}

.button--large {
  min-height: 3.25rem;
  padding-inline: var(--space-6);
}

.button--primary {
  background: var(--color-accent);
  color: var(--color-bg);
}

.button--primary:hover {
  background: var(--color-accent-hover);
}

.button--primary:active {
  background: var(--color-accent-pressed);
}

.button--inverse-outline {
  border-color: rgba(245, 245, 245, 0.7);
  color: var(--color-text);
}

.button--inverse-outline:hover {
  border-color: var(--color-text);
  background: rgba(245, 245, 245, 0.1);
}

.button--dark {
  background: var(--color-light-text);
  color: var(--color-light-surface);
}

.button--dark:hover {
  background: #765716;
}

.text-link {
  position: relative;
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.9375rem;
  font-weight: 500;
}

.text-link::after {
  position: absolute;
  right: 0;
  bottom: 0.35rem;
  left: 0;
  height: 1px;
  background: var(--color-accent);
  content: "";
  transform: scaleX(0.25);
  transform-origin: left;
  transition: transform var(--duration-default) var(--ease-emphasis);
}

.text-link:hover::after {
  transform: scaleX(1);
}

.section-heading {
  max-width: 55rem;
  margin-bottom: var(--space-12);
}

.section-heading .section-label {
  margin-bottom: var(--space-6);
}

.section-heading--split,
.section-heading--inline {
  display: grid;
  gap: var(--space-8);
  max-width: none;
}

.section-heading__aside {
  max-width: 27rem;
  color: var(--color-muted);
}

.section--light .section-heading__aside,
.section--warm .section-heading__aside {
  color: var(--color-light-muted);
}

.site-header {
  position: fixed;
  z-index: 200;
  top: 0;
  right: 0;
  left: 0;
  height: var(--header-height);
  border-bottom: 1px solid transparent;
  transition: height var(--duration-default), background-color var(--duration-default), border-color var(--duration-default);
}

.site-header.is-scrolled,
.site-header.is-menu-open {
  border-color: var(--color-border);
  background: rgba(17, 17, 17, 0.96);
  backdrop-filter: blur(1rem);
}

.site-header.is-menu-open {
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
  border-color: transparent;
  background: var(--color-bg);
  backdrop-filter: none;
}

.site-header.is-menu-open .site-header__inner {
  height: var(--header-height);
}

.site-header.is-scrolled {
  box-shadow: 0 0.75rem 2.5rem rgba(0, 0, 0, 0.18);
}

.site-header__inner {
  display: flex;
  height: 100%;
  align-items: center;
  gap: var(--space-6);
}

.site-logo {
  position: relative;
  z-index: 2;
  display: block;
  width: 8.25rem;
  flex: 0 0 auto;
}

.desktop-nav,
.header-cta {
  display: none;
}

.menu-toggle {
  position: relative;
  z-index: 2;
  width: 2.75rem;
  height: 2.75rem;
  margin-left: auto;
  cursor: pointer;
  background: transparent;
}

.menu-toggle span {
  position: absolute;
  left: 0.625rem;
  width: 1.5rem;
  height: 1px;
  background: var(--color-text);
  transition: transform var(--duration-default), top var(--duration-default);
}

.menu-toggle span:first-child { top: 1.0625rem; }
.menu-toggle span:last-child { top: 1.625rem; }
.menu-toggle[aria-expanded="true"] span:first-child { top: 1.375rem; transform: rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { top: 1.375rem; transform: rotate(-45deg); }

.mobile-menu {
  position: absolute;
  z-index: 1;
  inset: 0;
  min-height: 100%;
  padding: calc(var(--header-height) + var(--space-8)) var(--page-gutter) var(--space-8);
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--color-bg);
}

.mobile-menu__inner {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  align-items: flex-start;
}

.mobile-menu__inner > a:not(.button) {
  width: 100%;
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--color-border);
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 8vw, 2.25rem);
  line-height: 1.25;
}

.mobile-menu .button {
  width: 100%;
  margin-top: auto;
}

.mobile-menu p {
  margin-top: var(--space-6);
  color: var(--color-muted);
  font-size: 0.875rem;
}

.site-footer {
  padding-block: var(--space-20) var(--space-6);
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
}

.site-footer__main {
  display: grid;
  gap: var(--space-12);
}

.site-footer__brand img {
  width: 10rem;
}

.site-footer__brand p {
  max-width: 20rem;
  margin-block: var(--space-6);
  color: var(--color-muted);
}

.site-footer h2 {
  margin-bottom: var(--space-5);
  color: var(--color-muted);
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-footer nav,
.site-footer__contact {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.site-footer nav a,
.site-footer__contact a {
  padding-block: 0.35rem;
  color: var(--color-text);
}

.site-footer nav a:hover,
.site-footer__contact a:hover {
  color: var(--color-accent-hover);
}

.site-footer__contact p {
  margin-bottom: var(--space-4);
  color: var(--color-muted);
}

.site-footer__legal {
  display: flex;
  margin-top: var(--space-16);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  flex-direction: column;
  gap: var(--space-4);
  color: var(--color-muted);
  font-size: 0.75rem;
}

.site-footer__legal nav {
  flex-direction: row;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.site-credit { color: var(--color-text); }

.back-to-top {
  position: fixed;
  z-index: 150;
  right: var(--page-gutter);
  bottom: var(--space-5);
  display: grid;
  width: 3rem;
  height: 3rem;
  border: 1px solid rgba(245, 245, 245, 0.2);
  border-radius: 50%;
  place-items: center;
  background: rgba(17, 17, 17, 0.9);
  color: var(--color-text);
  opacity: 0;
  pointer-events: none;
  transform: translateY(0.75rem);
  transition: opacity var(--duration-default), transform var(--duration-default), background-color var(--duration-fast);
  backdrop-filter: blur(0.75rem);
}

.quick-whatsapp {
  position: fixed;
  z-index: 150;
  right: var(--page-gutter);
  bottom: 5.25rem;
  display: grid;
  width: 3.25rem;
  height: 3.25rem;
  border-radius: 50%;
  place-items: center;
  background: #25d366;
  color: #0d2817;
  cursor: pointer;
  box-shadow: 0 0.75rem 2rem rgba(0, 0, 0, 0.3);
  transition: transform var(--duration-fast), background-color var(--duration-fast);
}

.quick-whatsapp:hover { background: #46e27f; transform: translateY(-2px); }
.quick-whatsapp svg { width: 1.55rem; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.6; }

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:hover { background: var(--color-accent); color: var(--color-bg); }
.back-to-top svg { width: 1.25rem; fill: none; stroke: currentColor; stroke-width: 1.5; }