:root {
  /* Paleta de Cores Baseada na Logo */
  --primary-red: #C62828;
  --primary-red-light: #E53935;
  --primary-red-dark: #B71C1C;

  --primary-blue: #1976D2;
  --primary-blue-light: #42A5F5;
  --primary-blue-dark: #1565C0;

  --secondary-orange: #FF6F00;
  --secondary-orange-light: #FFB74D;

  --secondary-green: #66BB6A;
  --secondary-green-light: #81C784;

  --accent-yellow: #FDD835;
  --accent-yellow-light: #FFEB3B;

  /* Cores Neutras */
  --neutral-dark: #263238;
  --neutral-medium: #546E7A;
  --neutral-light: #ECEFF1;
  --neutral-lighter: #F5F7F8;
  --white: #FFFFFF;

  /* Tipografia */
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Tamanhos de Fonte */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;

  /* Espaçamento */
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Sombras */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);

  /* Raio de Borda */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Transições */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;

  /* Container */
  --container-max-width: 1200px;
  --container-padding: 1rem;
}

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

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

body {
  font-family: var(--font-body);
  color: var(--neutral-dark);
  line-height: 1.6;
  background-color: var(--white);
  overflow-x: hidden;
}

/* Tipografia */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-md);
  color: var(--neutral-dark);
}

h1 {
  font-size: var(--text-4xl);
}

h2 {
  font-size: var(--text-3xl);
}

h3 {
  font-size: var(--text-2xl);
}

h4 {
  font-size: var(--text-xl);
}

h5 {
  font-size: var(--text-lg);
}

h6 {
  font-size: var(--text-base);
}

p {
  margin-bottom: var(--space-md);
  color: var(--neutral-medium);
}

a {
  color: var(--primary-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-blue-dark);
}

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

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

/* Header */
.header {
  background-color: var(--white);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: all var(--transition-base);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) 0;
}

.logo {
  height: 80px;
  width: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

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

.nav-link {
  color: var(--neutral-dark);
  font-weight: 500;
  font-size: var(--text-base);
  transition: color var(--transition-fast);
  position: relative;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-red);
  transition: width var(--transition-base);
}

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

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.menu-toggle span {
  width: 25px;
  height: 3px;
  background-color: var(--neutral-dark);
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
}

/* Botões */
.btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-xl);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-base);
  text-align: center;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  border: 2px solid transparent;
  text-decoration: none;
}

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

.btn-primary:hover {
  background-color: var(--primary-red-dark);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background-color: var(--accent-yellow);
  color: var(--neutral-dark);
}

.btn-secondary:hover {
  background-color: var(--accent-yellow-light);
  color: var(--neutral-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--primary-blue);
  color: var(--primary-blue);
}

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

.btn-lg {
  padding: var(--space-md) var(--space-2xl);
  font-size: var(--text-lg);
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--white);
  text-align: center;
  padding: var(--space-3xl) var(--space-md);
  overflow: hidden;
}

/* Geometric Pattern Overlay */
.hero-pattern {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0.1;
  z-index: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.2) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(255, 221, 53, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 40% 20%, rgba(102, 187, 106, 0.15) 0%, transparent 50%);
}

.hero-pattern::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background-image:
    repeating-linear-gradient(45deg, transparent, transparent 60px, rgba(255, 255, 255, 0.03) 60px, rgba(255, 255, 255, 0.03) 120px);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('https://institutoavancabrasilia.org.br/wp-content/uploads/2024/10/avanca_brasilia_home.webp');
  background-size: cover;
  background-position: center;
  opacity: 1;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero h1 {
  color: var(--white);
  font-size: var(--text-5xl);
  margin-bottom: var(--space-lg);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero p {
  color: var(--white);
  font-size: var(--text-xl);
  margin-bottom: var(--space-2xl);
  opacity: 0.95;
}

/* Section Styles */
.section {
  padding: var(--space-3xl) 0;
}

.section-alt {
  background-color: var(--neutral-lighter);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-title {
  color: var(--primary-red);
  font-size: var(--text-3xl);
  margin-bottom: var(--space-md);
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background-color: var(--accent-yellow);
  border-radius: var(--radius-full);
}

.section-description {
  font-size: var(--text-lg);
  color: var(--neutral-medium);
  max-width: 700px;
  margin: var(--space-lg) auto 0;
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--space-xl);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Cards */
.card {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all var(--transition-base);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card-content {
  padding: var(--space-lg);
}

.card-title {
  font-size: var(--text-xl);
  color: var(--neutral-dark);
  margin-bottom: var(--space-sm);
}

.card-text {
  color: var(--neutral-medium);
  font-size: var(--text-base);
  margin-bottom: var(--space-md);
}

.card-link {
  color: var(--primary-blue);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

/* Icon Circles */
.icon-circle {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-lg);
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-base);
}

.card:hover .icon-circle {
  transform: scale(1.1) rotate(5deg);
}

/* Cards with Background Images */
.card-with-image {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
}

.card-with-image::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(rgba(255, 255, 255, 0.7), rgba(255, 255, 255, 0.7));
  border-radius: var(--radius-lg);
  z-index: 0;
}

.card-with-image .card-content {
  position: relative;
  z-index: 1;
}

/* Footer */
.footer {
  background-color: var(--neutral-dark);
  color: var(--neutral-light);
  padding: var(--space-3xl) 0 var(--space-lg);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-section h4 {
  color: var(--white);
  margin-bottom: var(--space-lg);
  font-size: var(--text-lg);
}

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

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

.footer-links a {
  color: var(--neutral-light);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--accent-yellow);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-lg);
  text-align: center;
  font-size: var(--text-sm);
  color: var(--neutral-light);
}

/* Forms */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--space-sm);
  font-weight: 500;
  color: var(--neutral-dark);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-md);
  border: 2px solid var(--neutral-light);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-base);
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary-blue);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

/* Animações */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease forwards;
}

/* Responsive */
@media (max-width: 768px) {
  :root {
    --text-4xl: 2rem;
    --text-3xl: 1.5rem;
    --text-2xl: 1.25rem;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--white);
    flex-direction: column;
    padding: var(--space-lg);
    box-shadow: var(--shadow-lg);
  }

  .nav-menu.active {
    display: flex;
  }

  .menu-toggle {
    display: flex;
  }

  .hero {
    min-height: 400px;
    padding: var(--space-2xl) var(--space-md);
  }

  .hero h1 {
    font-size: var(--text-3xl);
  }

  .hero p {
    font-size: var(--text-lg);
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: var(--text-2xl);
  }

  .section {
    padding: var(--space-2xl) 0;
  }

  .btn-lg {
    padding: var(--space-md) var(--space-xl);
    font-size: var(--text-base);
  }
}

/* Utilities */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.mt-0 {
  margin-top: 0;
}

.mb-0 {
  margin-bottom: 0;
}

.mt-sm {
  margin-top: var(--space-sm);
}

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

.mt-md {
  margin-top: var(--space-md);
}

.mb-md {
  margin-bottom: var(--space-md);
}

.mt-lg {
  margin-top: var(--space-lg);
}

.mb-lg {
  margin-bottom: var(--space-lg);
}

.mt-xl {
  margin-top: var(--space-xl);
}

.mb-xl {
  margin-bottom: var(--space-xl);
}

.d-none {
  display: none;
}

.d-block {
  display: block;
}

.d-flex {
  display: flex;
}

.d-grid {
  display: grid;
}