:root {
  /* Colors - Core */
  --color-primary: #0f3f2f;
  --color-secondary: #8BEA00;
  --color-accent: #a8e03d;
  --color-hover: #1a5740;

  /* Colors - Neutral */
  --color-white: #ffffff;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-900: #111827;
  --color-black-transparent: rgba(0, 0, 0, 0.5);

  /* Gradients */
  --grad-diamante: linear-gradient(to bottom right, #3b82f6, #4f46e5);
  --grad-ouro: linear-gradient(to bottom right, #f59e0b, #f97316);
  --grad-prata: linear-gradient(to bottom right, #9ca3af, #6b7280);
  --grad-bronze: linear-gradient(to bottom right, #c2410c, #991b1b);

  /* Typography */
  --font-primary: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;

  /* Spacing */
  --spacing-container: 1.5rem;
  --max-w-container: 1280px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  color: var(--color-gray-700);
  background-color: var(--color-white);
  line-height: 1.6;
}

button {
  cursor: pointer;
  border: none;
  background: transparent;
  font-family: inherit;
}

a {
  text-decoration: none;
  color: inherit;
}

/* Layout */
.container {
  max-width: var(--max-w-container);
  margin: 0 auto;
  padding: 0 var(--spacing-container);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  transition: all 0.3s ease;
  background-color: var(--color-white);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  height: 5rem;
  display: flex;
  align-items: center;
}

@media (min-width: 1024px) {
  .site-header {
    height: 6rem;
  }
}

.site-header.scrolled {
  background-color: var(--color-accent);
}

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

.site-header .logo img {
  height: 2.5rem;
  transition: all 0.3s ease;
}

@media (min-width: 1024px) {
  .site-header .logo img {
    height: 3rem;
  }
}

.main-nav {
  display: none;
  align-items: center;
  gap: 2rem;
}

@media (min-width: 768px) {
  .main-nav {
    display: flex;
  }
}

.nav-link {
  font-weight: var(--fw-semibold);
  color: var(--color-primary);
  transition: color 0.3s ease;
}

.site-header.scrolled .nav-link {
  color: var(--color-white);
}

.nav-link:hover {
  color: var(--color-secondary);
}

.site-header.scrolled .nav-link:hover {
  color: var(--color-primary);
}

.btn {
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-size: 16px;
  font-weight: var(--fw-semibold);
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

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

.site-header.scrolled .btn-nav {
  background-color: var(--color-white);
  color: var(--color-primary);
}

.site-header.scrolled .btn-nav:hover {
  background-color: var(--color-gray-100);
}

.mobile-menu-btn {
  display: block;
  color: var(--color-primary);
}

@media (min-width: 768px) {
  .mobile-menu-btn {
    display: none;
  }
}

.site-header.scrolled .mobile-menu-btn {
  color: var(--color-white);
}

/* Mobile Menu */
.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 40;
  display: none;
}

.mobile-menu-overlay.active {
  display: block;
}

.mobile-menu-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  background-color: var(--color-accent);
  height: 5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
}

@media (min-width: 1024px) {
  .mobile-menu-header {
    height: 6rem;
  }
}

.mobile-nav {
  position: absolute;
  top: 5rem;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-white);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
}

.header-spacer {
  height: 5rem;
}

@media (min-width: 1024px) {
  .header-spacer {
    height: 6rem;
  }
}

/* Hero Section */
.hero {
  position: relative;
  overflow: hidden;
}

.hero-mobile {
  display: block;
}

.hero-desktop {
  display: none;
}

@media (min-width: 1024px) {
  .hero-mobile {
    display: none;
  }

  .hero-desktop {
    display: block;
    position: relative;
    height: 700px;
  }
}

.hero-img-box {
  width: 100%;
  height: 300px;
}

@media (min-width: 640px) {
  .hero-img-box {
    height: 400px;
  }
}

.hero-img-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-content {
  background-color: var(--color-accent);
  padding: 3rem 1.5rem;
}

.hero-content-inner {
  max-width: 36rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.hero-title {
  font-size: 2.25rem;
  font-weight: var(--fw-bold);
  color: var(--color-primary);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.hero-desc {
  font-size: 1.125rem;
  color: var(--color-primary);
}

.hero-info {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  color: var(--color-primary);
}

.info-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: var(--fw-semibold);
}

.hero-actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.btn-outline {
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  background-color: var(--color-white);
}

.btn-outline:hover {
  background-color: var(--color-gray-50);
}

/* Desktop Hero specific */
.hero-desktop-bg {
  position: absolute;
  inset: 0;
}

.hero-desktop-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-desktop-block {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 35%;
  background-color: var(--color-accent);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 5rem 3rem;
}

.hero-desktop .hero-title {
  font-size: 3rem;
}

.hero-desktop .hero-desc {
  font-size: 1.25rem;
}

.hero-desktop .hero-info {
  font-size: 1.125rem;
}

/* Benefits Section */
.benefits {
  padding: 5rem 0;
  background-color: var(--color-white);
}

.benefits-grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .benefits-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.benefit-card {
  padding: 2rem;
  background-color: var(--color-gray-50);
  border-radius: 1rem;
  border: 1px solid var(--color-gray-100);
  transition: all 0.3s ease;
}

.benefit-card:hover {
  border-color: var(--color-secondary);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.benefit-icon {
  color: var(--color-primary);
  margin-bottom: 1rem;
  transition: color 0.3s ease;
}

.benefit-icon svg {
  width: 2rem;
  height: 2rem;
}

.benefit-card:hover .benefit-icon {
  color: var(--color-secondary);
}

.benefit-title {
  font-size: 1.125rem;
  font-weight: var(--fw-semibold);
  color: var(--color-gray-900);
  line-height: 1.3;
}

/* About Section */
.about {
  padding: 5rem 0;
  background-color: var(--color-gray-50);
}

.about-grid {
  display: grid;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 1024px) {
  .about-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.carousel-container {
  position: relative;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  height: 500px;
}

.carousel-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1s ease;
}

.carousel-slide.active {
  opacity: 1;
}

.carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel-indicators {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.5rem;
  z-index: 10;
}

.carousel-dot {
  width: 0.625rem;
  height: 0.625rem;
  border-radius: 9999px;
  background-color: rgba(255, 255, 255, 0.5);
  transition: all 0.3s ease;
}

.carousel-dot:hover {
  background-color: rgba(255, 255, 255, 0.75);
}

.carousel-dot.active {
  background-color: var(--color-white);
  width: 2rem;
}

.about-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.section-title {
  font-size: 2.25rem;
  font-weight: var(--fw-bold);
  color: var(--color-primary);
  line-height: 1.2;
}

@media (min-width: 1024px) {
  .section-title {
    font-size: 3rem;
  }
}

.about-desc {
  font-size: 1.125rem;
  color: var(--color-gray-700);
}

/* Technical Content */
.tech-content {
  padding: 5rem 0;
  background-color: var(--color-white);
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--color-gray-600);
  margin-top: 1rem;
}

.tech-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 768px) {
  .tech-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.tech-card {
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.bg-gradient-dark {
  background: linear-gradient(to bottom right, var(--color-primary), var(--color-hover));
  color: var(--color-white);
}

.bg-gradient-light {
  background: linear-gradient(to bottom right, var(--color-secondary), #a0f020);
  color: var(--color-primary);
}

.tech-card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.tech-icon-box {
  width: 3rem;
  height: 3rem;
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.bg-gradient-dark .tech-icon-box {
  background-color: var(--color-secondary);
  color: var(--color-primary);
}

.bg-gradient-light .tech-icon-box {
  background-color: var(--color-primary);
  color: var(--color-secondary);
}

.tech-icon-box svg {
  width: 1.5rem;
  height: 1.5rem;
}

.tech-card-title {
  font-size: 1.5rem;
  font-weight: var(--fw-bold);
}

.tech-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.tech-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.tech-list svg {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
  margin-top: 0.125rem;
}

.bg-gradient-dark .tech-list svg {
  color: var(--color-secondary);
}

.bg-gradient-light .tech-list svg {
  color: var(--color-primary);
}

.bg-gradient-dark .tech-list span {
  color: var(--color-gray-100);
}

.bg-gradient-light .tech-list span {
  color: rgba(15, 63, 47, 0.9);
}

/* Stats */
.stats {
  padding: 5rem 0;
  background: linear-gradient(to bottom right, var(--color-primary), var(--color-hover));
}

.stats-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.stat-card {
  background-color: var(--color-secondary);
  padding: 2.5rem;
  border-radius: 1rem;
  text-align: center;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.stat-card:hover {
  transform: scale(1.05);
}

.stat-number {
  font-size: 3rem;
  font-weight: var(--fw-bold);
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

@media (min-width: 1024px) {
  .stat-number {
    font-size: 3.75rem;
  }
}

.stat-label {
  font-size: 1.125rem;
  font-weight: var(--fw-semibold);
  color: rgba(15, 63, 47, 0.8);
}

/* Sponsors */
.sponsors {
  padding: 5rem 0;
  background-color: var(--color-gray-50);
}

.sponsor-grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .sponsor-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .sponsor-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.sponsor-card {
  position: relative;
  background-color: var(--color-white);
  padding: 2rem;
  border-radius: 1rem;
  border: 2px solid var(--color-gray-200);
  transition: all 0.3s ease;
}

.sponsor-card:hover {
  border-color: var(--color-secondary);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.sponsor-badge {
  position: absolute;
  top: 0;
  right: 0;
  width: 4rem;
  height: 4rem;
  border-bottom-left-radius: 1rem;
  border-top-right-radius: 0.75rem;
}

.badge-diamante {
  background: var(--grad-diamante);
}

.badge-ouro {
  background: var(--grad-ouro);
}

.badge-prata {
  background: var(--grad-prata);
}

.badge-bronze {
  background: var(--grad-bronze);
}

.sponsor-content {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.sponsor-tier {
  font-size: 1.5rem;
  font-weight: var(--fw-bold);
  color: var(--color-primary);
}

.sponsor-price {
  font-size: 1.875rem;
  font-weight: var(--fw-bold);
  color: var(--color-secondary);
}

.sponsor-btn {
  width: 100%;
}

.sponsor-card:hover .sponsor-btn {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* Final CTA */
.cta {
  background: linear-gradient(to bottom right, var(--color-primary), var(--color-hover), var(--color-primary));
  color: var(--color-white);
  padding: 5rem 0;
}

.cta-grid {
  display: grid;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 768px) {
  .cta-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.cta-content {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .cta-content {
    text-align: left;
  }
}

.cta-title {
  font-size: 2.25rem;
  font-weight: var(--fw-bold);
  line-height: 1.1;
}

@media (min-width: 768px) {
  .cta-title {
    font-size: 3rem;
  }
}

.cta-desc {
  font-size: 1.25rem;
  color: var(--color-gray-300);
}

.btn-cta {
  background-color: var(--color-secondary);
  color: var(--color-primary);
  font-size: 1.125rem;
  padding: 1rem 2rem;
}

.btn-cta:hover {
  background-color: var(--color-accent);
}

.cta-map-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.map-box {
  background-color: var(--color-white);
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  height: 400px;
}

.airbnb-card {
  display: block;
  background-color: var(--color-white);
  border-radius: 0.75rem;
  padding: 1.5rem;
  transition: all 0.3s ease;
}

.airbnb-card:hover {
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.airbnb-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.airbnb-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.airbnb-logo-box {
  width: 4rem;
  height: 4rem;
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-white);
}

.airbnb-logo-box svg {
  width: 2.5rem;
  height: 2.5rem;
  fill: #FF5A5F;
}

.airbnb-title {
  color: var(--color-primary);
  font-weight: var(--fw-bold);
  font-size: 1.125rem;
}

.airbnb-desc {
  color: var(--color-gray-600);
  font-size: 0.875rem;
}

.airbnb-icon {
  color: var(--color-primary);
  transition: transform 0.3s ease;
}

.airbnb-card:hover .airbnb-icon {
  transform: translateX(0.25rem);
}

/* Footer */
.site-footer {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: 4rem 0;
}

.footer-grid {
  display: grid;
  gap: 3rem;
  margin-bottom: 2rem;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.footer-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.footer-logo {
  height: 3.5rem;
  margin-bottom: 1rem;
}

.footer-col p {
  color: var(--color-gray-400);
  font-size: 0.875rem;
}

.footer-heading {
  font-weight: var(--fw-semibold);
  margin-bottom: 1rem;
  color: var(--color-gray-300);
}

.footer-sponsor-logo {
  height: 1.75rem;
  margin-bottom: 1rem;
}

.footer-links {
  display: flex;
  gap: 1rem;
}

.footer-link {
  color: var(--color-gray-400);
  font-size: 0.875rem;
  text-decoration: underline;
  transition: color 0.3s ease;
}

.footer-link:hover {
  color: var(--color-secondary);
}

.footer-info {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  color: var(--color-gray-400);
  font-size: 0.875rem;
}

.footer-info-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-info-item svg {
  width: 1rem;
  height: 1rem;
}

.footer-info-sub {
  font-size: 0.75rem;
  color: var(--color-gray-500);
  margin-top: 0.75rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
  text-align: center;
}

.footer-bottom p {
  color: var(--color-gray-500);
  font-size: 0.875rem;
}

/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: var(--color-black-transparent);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background-color: var(--color-white);
  border-radius: 1rem;
  width: 100%;
  max-width: 32rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  transform: scale(0.95);
  transition: transform 0.3s ease;
  position: relative;
  overflow: hidden;
}

.modal-overlay.active .modal-content {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  color: var(--color-gray-400);
  transition: color 0.3s ease;
  z-index: 10;
}

.modal-close:hover {
  color: var(--color-gray-600);
}

.modal-body {
  padding: 2rem;
}

.modal-title {
  font-size: 1.5rem;
  font-weight: var(--fw-bold);
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.modal-desc {
  color: var(--color-gray-600);
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: var(--fw-medium);
  color: var(--color-gray-700);
  margin-bottom: 0.25rem;
}

.form-input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-gray-300);
  border-radius: 0.5rem;
  outline: none;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  font-family: inherit;
}

.form-input:focus {
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(139, 234, 0, 0.2);
}

.btn-submit {
  width: 100%;
  padding: 0.75rem;
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: 0.5rem;
  font-weight: var(--fw-semibold);
  transition: background-color 0.3s ease;
  margin-top: 1rem;
}

.btn-submit:hover {
  background-color: var(--color-hover);
}