/* Main Global Stylesheet - Nativa Eco-Retreat & Spa */

/* --- Reset & Base Styles --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg-primary);
  color: var(--color-text-main);
  line-height: 1.6;
  font-weight: 400;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* --- Accessibility Focus Style --- */
:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 4px;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-primary);
  line-height: 1.2;
  font-weight: 600;
  transition: color var(--transition-normal);
}

@media (prefers-color-scheme: dark) {
  h1, h2, h3, h4, h5, h6 {
    color: var(--color-text-main);
  }
}

h1 {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 700;
}

h2 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  margin-bottom: var(--space-md);
  position: relative;
}

h3 {
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
}

p {
  margin-bottom: var(--space-md);
  color: var(--color-text-muted);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast), border var(--transition-fast);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* --- Layout Elements --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-lg);
  padding-right: var(--space-lg);
}

.section {
  padding-top: var(--space-section);
  padding-bottom: var(--space-section);
}

.section-alt {
  background-color: var(--color-bg-secondary);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-xl) auto;
}

.section-header p {
  font-size: 1.1rem;
}

.section-title-decoration::after {
  content: '';
  display: block;
  width: 60px;
  height: 2px;
  background-color: var(--color-secondary);
  margin: var(--space-md) auto 0 auto;
}

/* --- Header & Navigation --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: background-color var(--transition-normal), box-shadow var(--transition-normal), height var(--transition-normal);
}

.site-header.scrolled {
  height: 70px;
  background-color: var(--color-bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
  border-bottom: 1px solid var(--color-border);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

@media (prefers-color-scheme: dark) {
  .logo {
    color: var(--color-text-main);
  }
}

.logo svg {
  fill: currentColor;
}

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

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--space-lg);
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-muted);
  position: relative;
  padding: var(--space-xs) 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--color-primary);
}

@media (prefers-color-scheme: dark) {
  .nav-link:hover, .nav-link.active {
    color: var(--color-text-main);
  }
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-secondary);
  transition: width var(--transition-normal);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
  z-index: 1100;
}

.nav-toggle-icon {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-primary);
  position: relative;
  transition: background-color var(--transition-fast);
}

@media (prefers-color-scheme: dark) {
  .nav-toggle-icon {
    background-color: var(--color-text-main);
  }
}

.nav-toggle-icon::before, .nav-toggle-icon::after {
  content: '';
  position: absolute;
  width: 24px;
  height: 2px;
  background-color: currentColor;
  left: 0;
  transition: transform var(--transition-fast), top var(--transition-fast);
}

.nav-toggle-icon::before {
  top: -6px;
}

.nav-toggle-icon::after {
  top: 6px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon {
  background-color: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before {
  transform: rotate(45deg);
  top: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::after {
  transform: rotate(-45deg);
  top: 0;
}

/* Responsive Header */
@media (max-width: 992px) {
  .nav-toggle {
    display: block;
  }
  
  .nav-list {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100vh;
    background-color: var(--color-bg-primary);
    box-shadow: var(--shadow-lg);
    flex-direction: column;
    padding: calc(var(--header-height) + var(--space-xl)) var(--space-xl) var(--space-xl) var(--space-xl);
    gap: var(--space-lg);
    transition: right var(--transition-normal);
    z-index: 1050;
    border-left: 1px solid var(--color-border);
  }
  
  .nav-list.open {
    right: 0;
  }
  
  .nav-link {
    font-size: 1.2rem;
  }
}

/* --- Footer --- */
.site-footer {
  background-color: var(--color-primary-dark);
  color: var(--color-text-light);
  padding: var(--space-xxl) 0 var(--space-lg) 0;
  font-size: 0.95rem;
  border-top: 2px solid var(--color-secondary);
}

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

@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 576px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
}

.footer-brand .logo {
  color: var(--color-text-light);
  margin-bottom: var(--space-md);
}

.footer-brand p {
  color: var(--color-sage-light);
}

.footer-title {
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--color-secondary-light);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-links {
  list-style: none;
}

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

.footer-links a {
  color: var(--color-sage-light);
}

.footer-links a:hover {
  color: var(--color-secondary-light);
  padding-left: 4px;
}

.footer-contact p {
  color: var(--color-sage-light);
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.social-links {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.social-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background-color: rgba(252, 251, 250, 0.08);
  color: var(--color-text-light);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.social-icon:hover {
  background-color: var(--color-secondary);
  transform: translateY(-3px);
}

.footer-bottom {
  border-top: 1px solid rgba(252, 251, 250, 0.1);
  padding-top: var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  color: var(--color-sage-light);
  font-size: 0.85rem;
}

.footer-bottom-links {
  display: flex;
  gap: var(--space-lg);
}

.footer-bottom-links a:hover {
  color: var(--color-text-light);
}

/* --- Scroll Animations Utilities --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

.reveal-fade {
  opacity: 0;
  transition: opacity 1s ease;
}

.reveal-fade.active {
  opacity: 1;
}

/* --- Accessibility Helper Class --- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}