/* ===== SKIP LINK ===== */
.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  z-index: 1000;
  font-weight: 600;
}

.skip-link:focus {
  top: var(--space-sm);
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 100;
  transition: background-color var(--transition-base), height var(--transition-base), box-shadow var(--transition-base);
  background-color: transparent;
}

.header--scrolled {
  height: var(--header-height-scrolled);
  background-color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.header--scrolled .header__logo-text,
.header--scrolled .nav__link {
  color: var(--color-black);
}

.header--scrolled .hamburger span {
  background-color: var(--color-black);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  z-index: 101;
}

.header__logo-img {
  height: 44px;
  width: auto;
}

/* Default: show white logo, hide black */
.header__logo-img--white {
  display: block;
}

.header__logo-img--black {
  display: none;
}

/* Scrolled: show black logo, hide white */
.header--scrolled .header__logo-img--white {
  display: none;
}

.header--scrolled .header__logo-img--black {
  display: block;
}

.header__logo-text {
  font-family: var(--font-heading);
  font-weight: 400;
  font-size: var(--font-size-xl);
  color: var(--color-white);
  letter-spacing: 2px;
  text-transform: uppercase;
  transition: color var(--transition-base);
}

/* ===== NAV ===== */
.nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav__list {
  display: flex;
  gap: var(--space-lg);
}

.nav__link {
  font-family: var(--font-heading);
  font-weight: 400;
  font-size: var(--font-size-sm);
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: var(--space-xs) 0;
  position: relative;
  transition: color var(--transition-base);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-base);
}

.nav__link:hover::after,
.nav__link[aria-current="page"]::after {
  width: 100%;
}

.nav__link[aria-current="page"] {
  color: var(--color-primary);
}

.header--scrolled .nav__link[aria-current="page"] {
  color: var(--color-primary);
}

.nav__whatsapp {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  background-color: var(--color-whatsapp);
  color: var(--color-white);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: var(--font-size-sm);
  transition: background-color var(--transition-fast);
}

.nav__whatsapp:hover {
  background-color: #1EBE55;
  color: var(--color-white);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
  z-index: 101;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.hamburger.is-active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.is-active span:nth-child(2) {
  opacity: 0;
}

.hamburger.is-active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== GRID ===== */
.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ===== FOOTER ===== */
.footer {
  background-color: var(--color-secondary-dark);
  color: var(--color-gray-200);
  padding: var(--space-section) 0 var(--space-lg);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.5fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-3xl);
}

.footer__brand-text {
  font-size: var(--font-size-sm);
  line-height: 1.7;
  margin-top: var(--space-md);
  color: var(--color-gray-500);
}

.footer__logo-text {
  font-family: var(--font-heading);
  font-weight: 400;
  font-size: var(--font-size-xl);
  color: var(--color-white);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.footer__tagline {
  color: var(--color-accent);
  font-size: var(--font-size-sm);
  font-style: italic;
  margin-top: var(--space-xs);
}

.footer h4 {
  color: var(--color-white);
  font-size: var(--font-size-base);
  margin-bottom: var(--space-lg);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer__links li {
  margin-bottom: var(--space-sm);
}

.footer__links a {
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

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

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  font-size: var(--font-size-sm);
}

.footer__contact-item svg {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  fill: var(--color-primary);
}

.footer__social {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.footer__social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background-color: rgba(255, 255, 255, 0.1);
  transition: background-color var(--transition-fast);
}

.footer__social a:hover {
  background-color: var(--color-primary);
}

.footer__social svg {
  width: 18px;
  height: 18px;
  fill: var(--color-white);
}

.footer__hours {
  font-size: var(--font-size-sm);
}

.footer__hours p {
  margin-bottom: var(--space-xs);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

/* ===== PAGE HERO ===== */
.page-hero {
  background-color: var(--color-secondary);
  padding: calc(var(--header-height) + var(--space-3xl)) 0 var(--space-3xl);
  text-align: center;
}

.page-hero h1 {
  color: var(--color-white);
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-sm);
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

.breadcrumb a {
  color: var(--color-accent);
}

.breadcrumb a:hover {
  text-decoration: underline;
}

/* ===== WHATSAPP FAB ===== */
.whatsapp-fab {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  width: 56px;
  height: 56px;
  background-color: var(--color-whatsapp);
  color: var(--color-white);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  z-index: 90;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  animation: pulse-whatsapp 2s infinite;
}

.whatsapp-fab:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 30px rgba(37, 211, 102, 0.4);
  color: var(--color-white);
}

.whatsapp-fab svg {
  width: 28px;
  height: 28px;
  fill: currentColor;
}

@keyframes pulse-whatsapp {
  0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.5); }
  70% { box-shadow: 0 0 0 15px rgba(37, 211, 102, 0); }
  100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

/* ===== SCROLL TO TOP ===== */
.scroll-top {
  position: fixed;
  bottom: var(--space-xl);
  right: calc(var(--space-xl) + 70px);
  width: 44px;
  height: 44px;
  background-color: var(--color-secondary);
  color: var(--color-white);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  z-index: 90;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base), transform var(--transition-fast);
}

.scroll-top.is-visible {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  transform: translateY(-3px);
  background-color: var(--color-primary);
  color: var(--color-white);
}

.scroll-top svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}