/* TermFlow Landing Page — Dark Developer Theme */
/* Inspired by Raycast — clean, minimal, developer-focused */

/* ============================================================
   CSS Custom Properties
   ============================================================ */
:root {
  --bg-primary: #0a0a0b;
  --bg-secondary: #141416;
  --bg-card: #1a1a1e;
  --bg-card-hover: #222228;
  --border-color: #2a2a30;
  --text-primary: #f5f5f7;
  --text-secondary: #a1a1a6;
  --text-muted: #6e6e73;
  --accent: #6c5ce7;
  --accent-hover: #7c6cf7;
  --accent-glow: rgba(108, 92, 231, 0.3);
  --success: #34d399;
  --warning: #fbbf24;
  --danger: #f87171;
  --font-sans: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  --max-width: 1200px;
  --radius: 12px;
  --radius-sm: 8px;
  --nav-height: 64px;
  --section-gap: 120px;
}

/* ============================================================
   Global Reset & Base Styles
   ============================================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  line-height: 1.6;
}

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

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

ul {
  list-style: none;
}

::selection {
  background-color: var(--accent);
  color: #ffffff;
}

/* ============================================================
   Layout Utilities
   ============================================================ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================================
   Navigation
   ============================================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background-color: rgba(10, 10, 11, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: color 0.2s ease;
}

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

.nav-cta {
  background-color: var(--accent) !important;
  color: #ffffff !important;
  padding: 8px 18px !important;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.875rem !important;
  transition: background-color 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease !important;
}

.nav-cta:hover {
  background-color: var(--accent-hover) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px var(--accent-glow);
}

/* ============================================================
   Hero Section
   ============================================================ */
.hero {
  padding: 80px 0 var(--section-gap);
  min-height: 80vh;
  display: flex;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 64px;
}

.hero-badge {
  display: inline-block;
  font-size: 0.8125rem;
  font-family: var(--font-mono);
  color: var(--accent);
  background-color: rgba(108, 92, 231, 0.1);
  border: 1px solid rgba(108, 92, 231, 0.25);
  border-radius: 100px;
  padding: 5px 14px;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.hero-heading {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 500px;
  line-height: 1.65;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.hero-footnote {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image {
  width: 100%;
  border-radius: var(--radius);
  box-shadow:
    0 0 0 1px var(--border-color),
    0 24px 64px rgba(0, 0, 0, 0.6),
    0 0 80px var(--accent-glow);
  background-color: var(--bg-card);
  min-height: 320px;
}

/* ============================================================
   CTA Buttons
   ============================================================ */
.cta-primary {
  display: inline-block;
  background-color: var(--accent);
  color: #ffffff;
  padding: 16px 32px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1.0625rem;
  text-decoration: none;
  transition: background-color 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
  cursor: pointer;
  border: none;
  white-space: nowrap;
}

.cta-primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--accent-glow);
}

.cta-primary:active {
  transform: translateY(0);
  box-shadow: none;
}

.cta-full {
  display: block;
  width: 100%;
  text-align: center;
}

.cta-secondary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 1rem;
  color: var(--text-secondary);
  font-weight: 500;
  transition: color 0.2s ease;
  padding: 16px 8px;
}

.cta-secondary:hover {
  color: var(--text-primary);
}

/* ============================================================
   Section Shared Styles
   ============================================================ */
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 64px;
}

.section-title {
  font-size: clamp(1.875rem, 3vw, 2.75rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ============================================================
   Features Section
   ============================================================ */
.features {
  padding: var(--section-gap) 0;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background-color: var(--bg-card);
  padding: 32px;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.feature-card:hover {
  background-color: var(--bg-card-hover);
  border-color: rgba(108, 92, 231, 0.3);
  transform: translateY(-4px);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 16px;
  display: block;
  line-height: 1;
}

.feature-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.feature-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================================
   Comparison Section
   ============================================================ */
.comparison {
  padding: var(--section-gap) 0;
}

.table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  margin-bottom: 40px;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--bg-card);
  white-space: nowrap;
}

.comparison-table thead th {
  text-align: left;
  padding: 16px 20px;
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  border-bottom: 1px solid var(--border-color);
}

.comparison-table thead th:first-child {
  width: 240px;
  white-space: normal;
}

.comparison-table tbody td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.comparison-table tbody tr:last-child td {
  border-bottom: none;
}

.comparison-table tbody td:first-child {
  color: var(--text-primary);
  font-weight: 500;
  white-space: normal;
}

.termflow-col {
  background-color: rgba(108, 92, 231, 0.05);
}

.yes {
  color: var(--success);
  font-weight: 600;
}

.no {
  color: var(--text-muted);
}

.partial {
  color: var(--warning);
  font-size: 0.875rem;
}

.comparison-note {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.7;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

/* ============================================================
   Pricing Section
   ============================================================ */
.pricing {
  padding: var(--section-gap) 0;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.pricing-card {
  max-width: 480px;
  margin: 0 auto;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 48px;
  text-align: center;
  position: relative;
}

.pricing-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: calc(var(--radius) + 1px);
  padding: 1px;
  background: linear-gradient(135deg, rgba(108, 92, 231, 0.4), transparent 60%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.pricing-header {
  margin-bottom: 36px;
}

.pricing-product {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}

.pricing-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 10px;
}

.price-amount {
  font-size: 4rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.price-label {
  font-size: 1rem;
  color: var(--text-secondary);
}

.pricing-features {
  text-align: left;
  margin-bottom: 36px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pricing-features li {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  padding-left: 28px;
  position: relative;
  line-height: 1.5;
}

.pricing-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: 700;
  font-size: 1rem;
}

.pricing-note {
  margin-top: 16px;
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 48px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-logo {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.footer-copy {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-links a {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

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

/* ============================================================
   Responsive: Tablet (max-width: 968px)
   ============================================================ */
@media (max-width: 968px) {
  :root {
    --section-gap: 80px;
  }

  .hero {
    padding: 60px 0 var(--section-gap);
    min-height: auto;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }

  .hero-text {
    order: 1;
  }

  .hero-visual {
    order: 2;
  }

  .hero-subtitle {
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions {
    justify-content: center;
  }

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

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .nav-links li:not(:last-child) {
    display: none;
  }
}

/* ============================================================
   Responsive: Mobile (max-width: 640px)
   ============================================================ */
@media (max-width: 640px) {
  :root {
    --section-gap: 60px;
    --nav-height: 56px;
  }

  .container {
    padding: 0 16px;
  }

  .nav-inner {
    padding: 0 16px;
  }

  .nav-links {
    gap: 4px;
  }

  .nav-links a {
    padding: 8px 8px;
    font-size: 0.875rem;
  }

  .nav-links li:not(:last-child) {
    display: none;
  }

  .hero-grid {
    gap: 36px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .cta-primary {
    text-align: center;
  }

  .hero-actions .cta-secondary {
    text-align: center;
    justify-content: center;
    padding: 8px;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .feature-card {
    padding: 24px;
  }

  .comparison-table thead th,
  .comparison-table tbody td {
    padding: 12px 14px;
    font-size: 0.875rem;
  }

  .pricing-card {
    padding: 32px 24px;
  }

  .price-amount {
    font-size: 3rem;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }

  .section-header {
    margin-bottom: 40px;
  }
}