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

:root {
  --font-system: system-ui, -apple-system, 'Roboto', 'Inter', Arial, sans-serif;
  --transition: all 0.3s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-system);
  line-height: 1.6;
  overflow-x: hidden;
}

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

a {
  text-decoration: none;
  transition: var(--transition);
}

button {
  cursor: pointer;
  border: none;
  font-family: inherit;
  transition: var(--transition);
}

ul {
  list-style: none;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  transition: var(--transition);
}

header.scrolled {
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo img {
  height: 50px;
  width: auto;
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
}

nav ul {
  display: flex;
  gap: 2rem;
  align-items: center;
}

nav a {
  font-weight: 500;
  font-size: 0.95rem;
}

.btn {
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  display: inline-block;
  text-align: center;
}

.btn-primary {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

/* Mobile Menu */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  padding: 5px;
}

.mobile-menu-toggle span {
  width: 25px;
  height: 3px;
  border-radius: 3px;
  transition: var(--transition);
}

/* Hero Section */
.hero {
  padding: 140px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.hero-text h1 {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

.hero-text p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  line-height: 1.6;
}

.hero-image {
  text-align: center;
}

.hero-image img {
  max-width: 100%;
  height: auto;
}

/* Section Styles */
section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.15rem;
  max-width: 700px;
  margin: 0 auto;
}

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

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

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

/* Cards */
.card {
  padding: 2rem;
  border-radius: 12px;
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  font-weight: 600;
}

.card p {
  line-height: 1.7;
}

/* Footer */
footer {
  padding: 60px 0 30px;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-about h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.footer-links h4 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
  font-weight: 600;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
  text-align: center;
  font-size: 0.9rem;
}

/* Form Styles */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
}

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

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.checkbox-group input[type="checkbox"] {
  width: auto;
  margin-top: 4px;
}

/* Responsive Design */
@media (max-width: 968px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-content {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  nav ul {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    padding: 2rem;
    gap: 1rem;
  }

  nav ul.active {
    display: flex;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .hero-content {
    grid-template-columns: 1fr;
  }

  .hero-text h1 {
    font-size: 2.25rem;
  }

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

  .footer-content {
    grid-template-columns: 1fr;
  }

  .section-header h2 {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .hero-text h1 {
    font-size: 1.75rem;
  }

  .hero-text p {
    font-size: 1rem;
  }

  .section-header h2 {
    font-size: 1.75rem;
  }
}