/* ============================================
   PRONTO NOTES LANDING PAGE
   ============================================ */

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

:root {
  /* Colors */
  --primary: #667eea;
  --primary-dark: #5568d3;
  --secondary: #764ba2;
  --accent: #f093fb;
  
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  
  /* Spacing */
  --max-width: 1200px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
  font-size: 16px;
  color: var(--gray-900);
  background: white;
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 1rem;
  color: var(--gray-900);
}

h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  text-decoration: none;
}

.btn-large {
  padding: 16px 32px;
  font-size: 18px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
  box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

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

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

.btn-cta {
  font-size: 20px;
  padding: 20px 48px;
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
  background: linear-gradient(135deg, rgba(102,126,234,0.1) 0%, rgba(118,75,162,0.1) 100%);
  padding: 120px 0 80px;
  position: relative;
  overflow: visible;
}

.hero::before {
  content: '';
  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"><circle cx="50" cy="50" r="1" fill="%23667eea" opacity="0.1"/></svg>');
  background-size: 50px 50px;
  pointer-events: none;
}

.hero .container {
  display: grid;
  grid-template-columns: 0.9fr 1.5fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
  max-width: 1400px;
}

.hero-content {
  max-width: 550px;
}

.hero-title {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--gray-600);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  gap: 16px;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.hero-trust {
  font-size: 0.875rem;
  color: var(--gray-500);
  font-weight: 500;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-right: -100px;
}

.hero-image {
  width: 100%;
}

.hero-image img {
  width: 100%;
  height: auto;
  border-radius: 16px;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--gray-200);
}

/* ============================================
   PROBLEM SECTION
   ============================================ */

.problem-section {
  padding: 80px 0;
  background: white;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 60px;
}

.problem-card {
  text-align: center;
  padding: 32px;
  border-radius: 12px;
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  transition: all 0.3s;
}

.problem-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.problem-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: 50%;
  margin-bottom: 20px;
  color: white;
}

.problem-card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
  color: var(--gray-900);
}

.problem-card p {
  color: var(--gray-600);
  line-height: 1.6;
}

/* ============================================
   FEATURES SECTION
   ============================================ */

.features-section {
  padding: 80px 0;
  background: linear-gradient(135deg, rgba(102,126,234,0.05) 0%, rgba(118,75,162,0.05) 100%);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 60px;
}

.feature-card {
  background: white;
  padding: 32px;
  border-radius: 12px;
  border: 1px solid var(--gray-200);
  transition: all 0.3s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: 12px;
  color: white;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
  color: var(--gray-900);
}

.feature-card p {
  color: var(--gray-600);
  line-height: 1.6;
}

/* ============================================
   HOW IT WORKS SECTION
   ============================================ */

.how-it-works-section {
  padding: 80px 0;
  background: white;
}

.steps-container {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  margin-top: 60px;
  flex-wrap: wrap;
}

.step {
  text-align: center;
  max-width: 280px;
  position: relative;
}

.step-number {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  z-index: 2;
  box-shadow: var(--shadow-md);
}

.step-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100px;
  height: 100px;
  background: var(--gray-50);
  border: 2px solid var(--gray-200);
  border-radius: 50%;
  margin-bottom: 20px;
  color: var(--primary);
}

.step h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
  color: var(--gray-900);
}

.step p {
  color: var(--gray-600);
}

.step-arrow {
  color: var(--gray-300);
  flex-shrink: 0;
}

/* ============================================
   AI INSIGHTS SECTION
   ============================================ */

.ai-insights-section {
  padding: 80px 0;
  background: linear-gradient(135deg, rgba(102,126,234,0.05) 0%, rgba(118,75,162,0.05) 100%);
}

.ai-insights-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-top: 40px;
}

.ai-insights-visual img {
  width: 100%;
  height: auto;

}

.ai-insights-text h2 {
  font-size: 2rem;
  margin-bottom: 2rem;
}

.benefits-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.benefits-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 1.125rem;
  color: var(--gray-700);
}

.benefits-list li i {
  flex-shrink: 0;
  color: var(--success);
  background: rgba(16, 185, 129, 0.1);
  border-radius: 50%;
  padding: 4px;
  margin-top: 2px;
}

/* ============================================
   ANALYTICS SECTION
   ============================================ */

.analytics-section {
  padding: 80px 0;
  background: white;
}

.analytics-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-top: 60px;
}

.chart-placeholder {
  background: var(--gray-50);
  border-radius: 16px;
  padding: 60px;
  border: 2px dashed var(--gray-300);
  text-align: center;
  color: var(--gray-400);
}

.chart-placeholder i {
  color: var(--primary);
  margin-bottom: 16px;
}

.analytics-benefits {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.analytics-benefit {
  display: flex;
  gap: 20px;
}

.analytics-benefit i {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
  border-radius: 12px;
}

.analytics-benefit h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.analytics-benefit p {
  color: var(--gray-600);
}

/* ============================================
   PRICING SECTION
   ============================================ */

.pricing-section {
  padding: 80px 0;
  background: linear-gradient(135deg, rgba(102,126,234,0.05) 0%, rgba(118,75,162,0.05) 100%);
}

.pricing-subtitle {
  text-align: center;
  font-size: 1.25rem;
  color: var(--gray-600);
  margin-bottom: 60px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  max-width: 900px;
  margin: 0 auto;
}

.pricing-card {
  background: white;
  border: 2px solid var(--gray-200);
  border-radius: 16px;
  padding: 40px;
  position: relative;
  transition: all 0.3s;
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.pricing-card-featured {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
  background: linear-gradient(135deg, rgba(102,126,234,0.02) 0%, rgba(118,75,162,0.02) 100%);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
  padding: 6px 20px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
}

.pricing-plan {
  font-size: 1.5rem;
  margin-bottom: 20px;
  text-align: center;
}

.pricing-price {
  text-align: center;
  margin-bottom: 32px;
}

.price-amount {
  font-size: 4rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.price-period {
  display: block;
  font-size: 1rem;
  color: var(--gray-500);
  margin-top: 8px;
}

.pricing-features {
  list-style: none;
  margin-bottom: 32px;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--gray-100);
  color: var(--gray-700);
}

.pricing-features li:last-child {
  border-bottom: none;
}

.pricing-features li i {
  color: var(--success);
  flex-shrink: 0;
}

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

/* ============================================
   PRIVACY SECTION
   ============================================ */

.privacy-section {
  padding: 80px 0;
  background: white;
}

.privacy-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 60px;
}

.privacy-card {
  text-align: center;
  padding: 32px 20px;
  background: var(--gray-50);
  border-radius: 12px;
  border: 1px solid var(--gray-200);
}

.privacy-card i {
  color: var(--primary);
  margin-bottom: 16px;
}

.privacy-card h3 {
  font-size: 1.125rem;
  margin-bottom: 8px;
}

.privacy-card p {
  color: var(--gray-600);
  font-size: 0.875rem;
  line-height: 1.6;
}

/* ============================================
   FAQ SECTION
   ============================================ */

.faq-section {
  padding: 80px 0;
  background: linear-gradient(135deg, rgba(102,126,234,0.05) 0%, rgba(118,75,162,0.05) 100%);
}

.faq-container {
  max-width: 800px;
  margin: 60px auto 0;
}

.faq-item {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  margin-bottom: 16px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px;
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--gray-900);
  transition: all 0.3s;
}

.faq-question:hover {
  background: var(--gray-50);
}

.faq-question i {
  flex-shrink: 0;
  color: var(--primary);
  transition: transform 0.3s;
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer p {
  padding: 0 24px 24px;
  color: var(--gray-600);
  line-height: 1.6;
}

/* ============================================
   FINAL CTA SECTION
   ============================================ */

.final-cta-section {
  padding: 100px 0;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
  text-align: center;
}

.cta-title {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 1rem;
  color: white;
}

.cta-subtitle {
  font-size: 1.25rem;
  margin-bottom: 3rem;
  opacity: 0.9;
}

.cta-note {
  margin-top: 1.5rem;
  font-size: 1rem;
  opacity: 0.9;
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
  background: var(--gray-900);
  color: var(--gray-400);
  padding: 60px 0 30px;
}

.footer-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 60px;
  margin-bottom: 40px;
}

.footer-brand {
  max-width: 400px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-tagline {
  color: var(--gray-500);
  line-height: 1.6;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.footer-column h4 {
  color: white;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-column a {
  display: block;
  color: var(--gray-400);
  text-decoration: none;
  margin-bottom: 12px;
  transition: color 0.3s;
}

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

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid var(--gray-800);
  text-align: center;
  color: var(--gray-500);
  font-size: 0.875rem;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-visual {
    order: -1;
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .ai-insights-content {
    grid-template-columns: 1fr;
  }
  
  .analytics-content {
    grid-template-columns: 1fr;
  }
  
  .privacy-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .section-title {
    font-size: 2rem;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .hero-cta {
    flex-direction: column;
  }
  
  .problem-grid {
    grid-template-columns: 1fr;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .step-arrow {
    display: none;
  }
  
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  
  .privacy-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
  
  .footer-links {
    grid-template-columns: 1fr;
  }
  
  .cta-title {
    font-size: 2rem;
  }
  
  .btn-large {
    padding: 14px 24px;
    font-size: 16px;
  }
  
  .btn-cta {
    font-size: 18px;
    padding: 16px 32px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }
  
  .hero {
    padding: 60px 0 40px;
  }
  
  .section-title {
    font-size: 1.75rem;
  }
  
  .hero-title {
    font-size: 1.75rem;
  }
  
  .price-amount {
    font-size: 3rem;
  }
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

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

/* Smooth scroll */
html {
  scroll-behavior: smooth;
}