@import url('https://fonts.googleapis.com/css2?family=Jost:ital,wght@0,100..900;1,100..900&family=Work+Sans:ital,wght@0,100..900;1,100..900&display=swap');

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Work Sans';
  scrollbar-width: none;
  outline: none;
}

:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f8f8f8;
  --bg-tertiary: #f0f0f0;
  --text-primary: #1a1a1a;
  --text-secondary: #4a4a4a;
  --text-tertiary: #6a6a6a;
  --title-bar-bg: #0f2a85;
  --title-bar-text: #ffffff;
  --confidence-low: #22c55e;
  --confidence-medium: #eab308;
  --confidence-high: #ef4444;
}

[data-theme="dark"] {
  --bg-primary: #121212;
  --bg-secondary: #0a0a0a;
  --bg-tertiary: #222222;
  --text-primary: #e0e0e0;
  --text-secondary: #b0b0b0;
  --text-tertiary: #808080;
  --title-bar-bg: #0f2a85;
  --title-bar-text: #ffffff;
  --confidence-low: #22c55e;
  --confidence-medium: #eab308;
  --confidence-high: #ef4444;
}

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.6;
  transition: background-color 0s, color 0s;
}

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

.header {
  background: var(--title-bar-bg);
  color: var(--title-bar-text);
  padding: 12px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.nav-links {
  display: flex;
  gap: 24px;
  align-items: center;
}

.nav-links a {
  font-size: 14px;
  font-weight: 400;
  color: var(--title-bar-text);
  text-decoration: none;
  font-family: 'Work Sans', sans-serif;
  transition: opacity 0s;
}

.nav-links a:hover {
  opacity: 0.8;
}

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

.logo {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.header h2 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--title-bar-text);
  font-family: 'Jost';
  margin: 0;
}

.theme-toggle {
  background: transparent;
  border: none;
  min-width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0 4px;
  font-size: 14px;
  font-weight: 700;
  color: var(--title-bar-text);
  font-family: 'Jost', sans-serif;
  position: relative;
  transition: opacity 0s;
}


.theme-toggle:hover {
  opacity: 0.8;
}

.theme-toggle:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-top: 6px;
  padding: 4px 8px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
  z-index: 1000;
  pointer-events: none;
  font-family: 'Work Sans', sans-serif;
}

.theme-toggle:hover::before {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-top: 0;
  border: 4px solid transparent;
  border-bottom-color: var(--bg-secondary);
  z-index: 1001;
  pointer-events: none;
}

kbd {
  display: inline-block;
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 700;
  font-family: 'Work Sans', sans-serif;
  background: var(--bg-secondary);
  color: var(--text-primary);
  margin: 0 3px;
  min-width: 28px;
  text-align: center;
  line-height: 1.2;
  position: relative;
  border-bottom: 3px solid var(--bg-tertiary);
  transition: transform 0s, border-bottom-width 0s, padding-top 0s;
}

[data-theme="dark"] kbd {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-bottom-color: var(--bg-tertiary);
}

.theme-toggle kbd {
  background: rgba(255, 255, 255, 0.15);
  color: var(--title-bar-text);
  border-bottom-color: rgba(8, 20, 65, 0.6);
  padding: 6px 10px;
  min-width: 32px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

kbd.pressed {
  transform: translateY(2px);
  border-bottom-width: 1px;
  padding-top: 8px;
}

.hero {
  padding: 120px 0;
  text-align: center;
  background: var(--bg-secondary);
}

.hero-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 24px;
  line-height: 1.2;
  font-family: 'Jost';
}

.hero-description {
  font-size: 16px;
  color: var(--text-secondary);
  font-weight: 400;
  max-width: 700px;
  margin: 0 auto 40px;
}

.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 14px 32px;
  font-size: 14px;
  text-decoration: none;
  transition: opacity 0s;
  font-family: 'Work Sans', sans-serif;
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--title-bar-bg);
  color: var(--title-bar-text);
}

.btn-primary:hover {
  opacity: 0.8;
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn-secondary:hover {
  opacity: 0.8;
}

.btn-large {
  padding: 18px 40px;
  font-size: 18px;
}

.section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  text-align: center;
  margin-bottom: 16px;
  font-family: 'Jost';
}

.section-description {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 400;
  text-align: center;
  max-width: 700px;
  margin: 0 auto 48px;
}

.features {
  padding: 80px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
  margin-top: 48px;
}

.feature-card {
  padding: 20px;
  background: var(--bg-secondary);
  transition: opacity 0s;
}

.feature-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  font-family: 'Jost';
}

.feature-description {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 400;
  line-height: 1.6;
}

.how-it-works {
  padding: 80px 0;
  background: var(--bg-secondary);
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-top: 48px;
}

.step {
  text-align: center;
}

.step-number {
  width: 40px;
  height: 40px;
  background: var(--title-bar-bg);
  color: var(--title-bar-text);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Jost';
  font-size: 18px;
  font-weight: 700;
  margin: 0 auto 20px;
  border-radius: 0;
}

.step-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  font-family: 'Jost';
}

.step-description {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 400;
  line-height: 1.6;
}

.patterns {
  padding: 80px 0;
}

.patterns-list {
  max-width: 800px;
  margin: 48px auto 0;
  display: grid;
  gap: 20px;
}

.pattern-item {
  font-size: 14px;
  color: var(--text-secondary);
  padding: 8px 0;
  padding-left: 20px;
  position: relative;
  line-height: 1.6;
  font-weight: 400;
}

.pattern-item::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--text-tertiary);
  font-weight: 700;
  font-size: 16px;
}

.pattern-item strong {
  color: var(--text-primary);
  font-weight: 700;
}

.faq {
  padding: 80px 0;
  background: var(--bg-secondary);
}

.faq-list {
  max-width: 800px;
  margin: 48px auto 0;
  display: grid;
  gap: 32px;
}

.faq-item {
  padding: 20px;
  background: var(--bg-primary);
}

.faq-question {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  font-family: 'Jost';
}

.faq-answer {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 400;
  line-height: 1.6;
}

.feedback {
  padding: 80px 0;
}

.feedback-content {
  max-width: 1000px;
  margin: 48px auto 0;
}

.feedback-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.feedback-option {
  padding: 20px;
  background: var(--bg-secondary);
  text-align: center;
}

.feedback-option-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  font-family: 'Jost';
}

.feedback-option-description {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 400;
  line-height: 1.6;
  margin-bottom: 20px;
}

.feedback-option .btn {
  margin-top: 8px;
}

.footer {
  padding: 20px 0;
  background: var(--bg-primary);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-links {
  display: flex;
  gap: 24px;
  align-items: center;
}

.footer-links a {
  font-size: 13px;
  font-weight: 400;
  color: var(--text-tertiary);
  text-decoration: none;
  font-family: 'Work Sans', sans-serif;
  transition: opacity 0s;
}

.footer-links a:hover {
  opacity: 0.8;
}

.footer-text {
  font-size: 13px;
  color: var(--text-tertiary);
  font-weight: 400;
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .hero-title {
    font-size: 24px;
  }

  .hero-description {
    font-size: 14px;
  }

  .section-title {
    font-size: 20px;
  }

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

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

  .feedback-options {
    grid-template-columns: 1fr;
  }
}