@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  /* Light mode colors */
  --color-primary: #34D399;
  --color-secondary: #10B981;
  --color-accent: #F59E0B;
  --color-dark: #1F2937;
  --color-text: #1F2937;
  --color-text-light: #6B7280;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F9FAFB;
  --color-surface: #FFFFFF;
  --color-border: #E5E7EB;
  --color-success: #10B981;
  --color-error: #EF4444;
  
  /* Typography */
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  
  /* Border radius */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 16px 64px rgba(0, 0, 0, 0.16);
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
  --color-text: #F9FAFB;
  --color-text-light: #9CA3AF;
  --color-bg: #0F172A;
  --color-bg-alt: #1E293B;
  --color-surface: #1E293B;
  --color-border: #334155;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 16px 64px rgba(0, 0, 0, 0.6);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background var(--transition-slow), color var(--transition-slow);
}

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

h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
  font-size: 1.125rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-md);
}

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

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-md) 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.9);
  transition: all var(--transition-base);
}

[data-theme="dark"] .navbar {
  background: rgba(15, 23, 42, 0.9);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

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

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

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

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

.theme-toggle {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xs) var(--space-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  transition: all var(--transition-base);
  font-size: 1.25rem;
}

.theme-toggle:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-sm);
}

.nav-cta {
  padding: 0.5rem 1.25rem !important;
  font-size: 0.875rem !important;
  font-weight: 700 !important;
  letter-spacing: 0.02em;
  animation: pulse-glow 2.5s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 4px 20px rgba(52, 211, 153, 0.35); }
  50% { box-shadow: 0 4px 28px rgba(52, 211, 153, 0.65), 0 0 0 4px rgba(52, 211, 153, 0.12); }
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: var(--space-3xl) 0;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(52, 211, 153, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  50% { transform: translate(-50px, -50px) rotate(180deg); }
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  width: 100%;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.hero-text {
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  background: var(--color-primary);
  color: white;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-xl);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--space-lg);
  animation: slideInLeft 0.6s ease-out;
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.hero h1 {
  animation: slideInLeft 0.6s ease-out 0.1s backwards;
  margin-bottom: var(--space-md);
}

.hero-highlight {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.25rem;
  animation: slideInLeft 0.6s ease-out 0.2s backwards;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-xl);
  animation: slideInLeft 0.6s ease-out 0.3s backwards;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 1.125rem;
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
  text-decoration: none;
  font-family: var(--font-body);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: white;
  box-shadow: 0 4px 20px rgba(52, 211, 153, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(52, 211, 153, 0.4);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 2px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-bg-alt);
  border-color: var(--color-primary);
}

.hero-visual {
  position: relative;
  animation: slideInRight 0.8s ease-out 0.2s backwards;
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.phone-mockup {
  position: relative;
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
  aspect-ratio: 9/19;
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  border: 8px solid var(--color-dark);
  overflow: hidden;
}

.phone-screen {
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, #075E54 0%, #128C7E 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  position: relative;
}

.chat-bubble {
  background: #FFFFFF;
  color: #1F2937;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  max-width: 80%;
  box-shadow: var(--shadow-sm);
  animation: bubbleIn 0.5s ease-out;
  align-self: flex-start;
}

@keyframes bubbleIn {
  from {
    opacity: 0;
    transform: scale(0.8) translateY(10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.chat-bubble:nth-child(even) {
  align-self: flex-end;
  background: #DCF8C6;
  color: #1F2937;
}

/* Features Section */
.features {
  padding: var(--space-3xl) 0;
  background: var(--color-bg);
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--space-3xl);
}

.section-badge {
  display: inline-block;
  background: var(--color-primary);
  color: white;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-xl);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
}

.feature-card {
  background: var(--color-surface);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3.5rem;
  height: 3.5rem;
  background: rgba(52, 211, 153, 0.12);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  flex-shrink: 0;
}

.feature-icon svg {
  width: 1.75rem;
  height: 1.75rem;
  color: var(--color-primary);
}

.feature-card h3 {
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.feature-card p {
  color: var(--color-text-light);
  font-size: 1rem;
}

/* Stats Section */
.stats {
  padding: var(--space-3xl) 0;
  background: var(--color-bg-alt);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-xl);
}

.stat-card {
  text-align: center;
  padding: var(--space-xl);
}

.stat-number {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  margin-bottom: var(--space-sm);
}

.stat-label {
  font-size: 1.125rem;
  color: var(--color-text-light);
  font-weight: 500;
}

/* Pricing Section */
.pricing {
  padding: var(--space-3xl) 0;
  background: var(--color-bg);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
}

.pricing-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  transition: all var(--transition-base);
  position: relative;
}

.pricing-card.featured {
  border-color: var(--color-primary);
  transform: scale(1.05);
  box-shadow: var(--shadow-xl);
}

.pricing-card.featured::before {
  content: 'MAIS POPULAR';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: white;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-xl);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

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

.pricing-card.featured:hover {
  transform: translateY(-8px) scale(1.05);
}

.plan-name {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.plan-price {
  display: flex;
  align-items: baseline;
  gap: var(--space-xs);
  margin-bottom: var(--space-sm);
}

.currency {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text-light);
}

.amount {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.period {
  color: var(--color-text-light);
  font-size: 1rem;
}

.plan-description {
  color: var(--color-text-light);
  margin-bottom: var(--space-lg);
  font-size: 1rem;
}

.plan-features {
  list-style: none;
  margin-bottom: var(--space-xl);
}

.plan-features li {
  padding: var(--space-sm) 0;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-text);
  font-size: 1rem;
}

.plan-features li::before {
  content: '✓';
  color: var(--color-success);
  font-weight: bold;
  font-size: 1.25rem;
}

/* Footer */
.footer {
  background: var(--color-dark);
  color: white;
  padding: var(--space-2xl) 0 var(--space-lg);
}

[data-theme="dark"] .footer {
  background: #0A0F1E;
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  text-align: center;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-md);
}

.footer p {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--space-lg);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
  margin-bottom: var(--space-lg);
}

.footer-link {
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-lg);
  margin-top: var(--space-lg);
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .mobile-menu-btn {
    display: block;
  }

  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--color-surface);
    flex-direction: column;
    padding: 1.5rem;
    gap: 0.25rem;
    transform: translateY(-110%);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: transform 0.25s ease, opacity 0.25s ease, visibility 0.25s;
    box-shadow: var(--shadow-lg);
    border-bottom: 1px solid var(--color-border);
    z-index: 999;
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .nav-menu .nav-link {
    padding: 0.65rem 0 !important;
    border-bottom: 1px solid var(--color-border);
    display: block;
    width: 100%;
  }

  .nav-cta {
    width: 100% !important;
    text-align: center;
    justify-content: center;
    margin-top: 0.5rem;
  }

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

  .hero-visual {
    order: 1;
  }

  .phone-mockup {
    max-width: 300px;
  }

  .hero-cta {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

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

  .pricing-card.featured {
    transform: scale(1);
  }

  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }
}

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

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

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

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* Scroll animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

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

/* Section spacing */
section .container { padding-top: var(--space-xl); padding-bottom: var(--space-xl); }