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

:root {
  --primary-color: #07476b;
  --secondary-color: #053a57;
  --accent-color: #0a5f88;
  --text-dark: #1a1a1a;
  --text-light: #666;
  --bg-light: #f8f9fa;
  --bg-white: #ffffff;
  --border-color: #e0e0e0;
  --gradient-start: #07476b;
  --gradient-end: #0a5f88;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
}

/* Dark Mode */
[data-theme="dark"] {
  --primary-color: #0a5f88;
  --secondary-color: #0d7ab8;
  --accent-color: #1a8fc9;
  --text-dark: #e4e4e4;
  --text-light: #b0b0b0;
  --bg-light: #1a1a1a;
  --bg-white: #2d2d2d;
  --border-color: #404040;
  --gradient-start: #0a5f88;
  --gradient-end: #07476b;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
}

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

/* Header */
.header {
  background: var(--bg-white);
  box-shadow: var(--shadow-sm);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: all 0.3s ease;
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 20px;
}

.logo h2 {
  color: var(--primary-color);
  font-size: 1.5rem;
  font-weight: 700;
}

.nav {
  display: flex;
  gap: 2rem;
}

.nav a {
  color: var(--text-dark);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width 0.3s ease;
}

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

.nav a:hover::after {
  width: 100%;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.mobile-menu-toggle span {
  width: 25px;
  height: 3px;
  background: var(--text-dark);
  transition: all 0.3s ease;
}

/* Theme Toggle Button */
.theme-toggle {
  background: none;
  border: 2px solid var(--border-color);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  margin-left: 1rem;
  color: var(--text-dark);
  font-size: 1.2rem;
}

.theme-toggle:hover {
  background: var(--bg-light);
  border-color: var(--primary-color);
  transform: rotate(20deg);
}

.theme-toggle i {
  transition: transform 0.3s ease;
}

.nav-wrapper {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
  color: white;
  padding: 150px 20px 100px;
  text-align: center;
  position: relative;
  overflow: hidden;
  margin-top: 60px;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="50" height="50" patternUnits="userSpaceOnUse"><path d="M 50 0 L 0 0 0 50" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity: 0.5;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
  font-size: 1.3rem;
  margin-bottom: 2rem;
  opacity: 0.95;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  animation: fadeInUp 0.8s ease 0.2s both;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 30px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  border: 2px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background: white;
  color: var(--primary-color);
  animation: fadeInUp 0.8s ease 0.4s both;
}

.btn-primary:hover {
  background: transparent;
  color: white;
  border-color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  background: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Sections */
.section {
  padding: 80px 20px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 3rem;
  color: var(--text-dark);
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  margin: 1rem auto 0;
  border-radius: 2px;
}

/* Como Funciona */
.como-funciona {
  background: var(--bg-light);
}

.como-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-top: 3rem;
}

.como-card {
  background: var(--bg-white);
  padding: 2rem;
  border-radius: 10px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  text-align: center;
  flex: 1;
  min-width: 220px;
  max-width: 280px;
  transition: all 0.3s ease;
}

.como-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.como-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.como-card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
  color: var(--text-dark);
}

.como-card p {
  color: var(--text-light);
  line-height: 1.6;
  font-size: 0.95rem;
}

.como-arrow {
  font-size: 1.5rem;
  color: var(--primary-color);
  opacity: 0.5;
  flex-shrink: 0;
}

/* Funcionalidades */
.funcionalidades {
  background: var(--bg-white);
}

.funcionalidades-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.solucao-card {
  background: var(--bg-white);
  padding: 2rem;
  border-radius: 10px;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
}

.solucao-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.solucao-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.solucao-icon i {
  display: block;
}

.solucao-card h3 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.solucao-card p {
  color: var(--text-light);
  line-height: 1.6;
}

/* Download */
.download {
  background: linear-gradient(135deg, #0d1117 0%, #1a2332 100%);
  color: white;
  text-align: center;
}

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

.download-icon {
  font-size: 4rem;
  color: var(--accent-color);
  opacity: 0.8;
}

.download h2 {
  font-size: 2rem;
  font-weight: 700;
}

.download-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: #d4a017;
  color: #1a1a1a;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 20px;
  letter-spacing: 0.03em;
}

.download-msg {
  color: rgba(255, 255, 255, 0.7);
  font-size: 1.1rem;
  max-width: 500px;
}

.download-platforms {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 0.5rem;
}

.platform-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255, 255, 255, 0.4);
  font-size: 1rem;
  font-weight: 500;
}

.platform-item i {
  font-size: 1.4rem;
}

/* Footer */
.footer {
  background: var(--text-dark);
  color: white;
  text-align: center;
  padding: 2rem 20px;
}

.footer p {
  margin: 0.5rem 0;
  opacity: 0.8;
}

.footer a {
  color: var(--accent-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer a:hover {
  color: white;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive */
@media (max-width: 768px) {
  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-white);
    flex-direction: column;
    padding: 1rem;
    box-shadow: var(--shadow-md);
  }

  .nav.active {
    display: flex;
  }

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

  .theme-toggle {
    width: 35px;
    height: 35px;
    font-size: 1rem;
    margin-left: 0.5rem;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1.1rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .como-grid {
    flex-direction: column;
    align-items: stretch;
  }

  .como-card {
    max-width: 100%;
  }

  .como-arrow {
    transform: rotate(90deg);
    align-self: center;
  }

  .funcionalidades-grid {
    grid-template-columns: 1fr;
  }

  .download-platforms {
    gap: 1.5rem;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.5rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .section {
    padding: 60px 15px;
  }

  .solucao-card,
  .como-card {
    padding: 1.5rem;
  }

  .download h2 {
    font-size: 1.5rem;
  }
}