@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Fira+Code:wght@400;500&display=swap');

:root {
  /* Color Palette - Dark Mode Default */
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: #1f2937;
  --bg-glass: rgba(17, 24, 39, 0.7);
  --border-color: #374151;
  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --primary-color: #1a73e8; /* FastMD Blue */
  --primary-hover: #1557b0;
  --primary-glow: rgba(26, 115, 232, 0.15);
  --accent-color: #e67e22; /* FastMD Orange */
  --accent-hover: #d35400;
  --accent-glow: rgba(230, 126, 34, 0.15);
  
  --code-bg: #1e293b;
  --code-text: #cbd5e1;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.25), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
  --shadow-glow: 0 0 40px rgba(26, 115, 232, 0.1);
  
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'Fira Code', ui-monospace, SFMono-Regular, Consolas, monospace;
  
  --container-width: 1200px;
  --content-width: 1000px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-card: #f1f5f9;
    --bg-glass: rgba(255, 255, 255, 0.8);
    --border-color: #e2e8f0;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    
    --primary-glow: rgba(26, 115, 232, 0.08);
    --accent-glow: rgba(230, 126, 34, 0.08);
    
    --code-bg: #f8fafc;
    --code-text: #0f172a;
    
    --shadow-glow: 0 0 40px rgba(26, 115, 232, 0.05);
  }
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  font-size: 16px;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  line-height: 1.6;
  overflow-x: hidden;
  max-width: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  position: relative;
  width: 100%;
  max-width: 100%;
}

/* Decorative Background Elements */
.bg-decor {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--primary-glow) 0%, rgba(0,0,0,0) 70%);
  top: -250px;
  right: -100px;
  z-index: -1;
  pointer-events: none;
}

.bg-decor-2 {
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, rgba(0,0,0,0) 70%);
  bottom: 10%;
  left: -200px;
  z-index: -1;
  pointer-events: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 1rem;
}

h1 {
  font-size: 2.5rem;
  letter-spacing: -0.025em;
}

h2 {
  font-size: 1.85rem;
  margin-top: 2rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

h3 {
  font-size: 1.4rem;
  margin-top: 1.5rem;
}

p {
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  font-size: 1rem;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* Header & Navigation */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: background-color 0.3s;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 1rem 2rem;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--text-primary);
}

.logo-img {
  width: 32px;
  height: 32px;
  display: block;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.nav-item a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.nav-item a:hover,
.nav-item.active a {
  color: var(--text-primary);
  background-color: var(--bg-card);
}

/* Layout container */
main {
  flex: 1;
  width: 100%;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 3rem 2rem;
  position: relative;
}

.content-container {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 3rem 2rem;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 4rem 1rem 3rem 1rem;
  max-width: 900px;
  margin: 0 auto;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--primary-glow);
  color: var(--primary-color);
  padding: 0.4rem 1rem;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(26, 115, 232, 0.3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--primary-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p.tagline {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2.5rem auto;
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.hero-release-note {
  margin-top: -2rem;
  margin-bottom: 0;
  color: var(--text-muted);
  font-size: 1rem;
  text-align: center;
}

.hero-release-note a {
  color: var(--text-primary);
  font-weight: 600;
}

.hero-release-note a:hover {
  color: var(--primary-color);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 1rem;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  transition: all 0.2s ease;
  cursor: pointer;
}

.store-icon {
  width: 20px;
  height: 20px;
  display: block;
  flex: 0 0 auto;
}

.store-cta-text {
  line-height: 1.1;
}

.btn-primary {
  background-color: var(--primary-color);
  color: #ffffff;
  border: 1px solid var(--primary-color);
  box-shadow: 0 4px 12px rgba(26, 115, 232, 0.25);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  border-color: var(--primary-hover);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(26, 115, 232, 0.35);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--bg-card);
  border-color: var(--text-secondary);
  transform: translateY(-2px);
}

/* Screenshot Display */
.screenshot-wrapper {
  max-width: 1000px;
  margin: 0 auto;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  transition: transform 0.3s ease;
  background-color: var(--bg-secondary);
}

.screenshot-wrapper:hover {
  transform: scale(1.01);
}

.screenshot {
  width: 100%;
  height: auto;
  display: block;
}



/* Features Grid */
.features-section {
  padding: 5rem 0;
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 3.5rem auto;
}

.section-header h2 {
  font-size: 2.25rem;
  border: none;
  margin-bottom: 1rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2rem 1.5rem;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-md), 0 10px 20px rgba(0, 0, 0, 0.05);
}

.feature-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background-color: var(--primary-glow);
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  margin-top: 0;
}

.feature-card p {
  font-size: 0.95rem;
  margin-bottom: 0;
  flex: 1;
}

/* Metrics Table Section */
.metrics-section {
  padding: 3rem 0;
}

.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
  background-color: var(--bg-secondary);
  margin-top: 1.5rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

th, td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
}

th {
  background-color: var(--bg-card);
  font-weight: 600;
  color: var(--text-primary);
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background-color: rgba(255, 255, 255, 0.02);
}

td strong {
  color: var(--primary-color);
}

/* Footer */
footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 3rem 2rem;
  margin-top: auto;
}

.footer-container {
  max-width: var(--container-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text-primary);
}

.footer-nav {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.footer-nav a {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

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

.footer-bottom {
  display: flex;
  justify-content: center;
  align-items: center;
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Content Page Layout Styles */
.article-header {
  margin-bottom: 3rem;
  text-align: center;
}

.article-header h1 {
  font-size: 2.75rem;
  margin-bottom: 0.5rem;
}

.article-header p.last-updated {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.article-content {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 3rem;
  box-shadow: var(--shadow-sm);
}

.article-content section {
  margin-bottom: 2.5rem;
}

.article-content section:last-child {
  margin-bottom: 0;
}

.article-content ul,
.article-content ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
  color: var(--text-secondary);
}

.article-content li {
  margin-bottom: 0.5rem;
}

/* Callout Box */
.callout {
  padding: 1.25rem 1.5rem;
  border-left: 4px solid var(--primary-color);
  background-color: var(--bg-card);
  border-radius: 0 8px 8px 0;
  margin: 1.5rem 0;
}

.callout p {
  margin-bottom: 0;
  color: var(--text-primary);
  font-weight: 500;
}

/* Licenses Page Styles */
.license-grid {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-top: 2rem;
}

.license-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
}

.license-card-header {
  padding: 1.25rem 1.5rem;
  background-color: rgba(0, 0, 0, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 1rem;
}

.license-name {
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--text-primary);
}

.license-badge {
  background-color: var(--bg-primary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.license-info {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px dashed var(--border-color);
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.license-info p {
  margin-bottom: 0.5rem;
}
.license-info p:last-child {
  margin-bottom: 0;
}

/* HTML details tag for Collapsible License Text */
details.license-details {
  border: none;
}

details.license-details summary {
  padding: 1rem 1.5rem;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--primary-color);
  user-select: none;
  outline: none;
  transition: background-color 0.2s;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

details.license-details summary::-webkit-details-marker {
  display: none;
}

details.license-details summary::before {
  content: "▶";
  font-size: 0.75rem;
  transition: transform 0.2s ease;
  display: inline-block;
  color: var(--text-muted);
}

details.license-details[open] summary::before {
  transform: rotate(90deg);
}

details.license-details summary:hover {
  background-color: rgba(255, 255, 255, 0.02);
  color: var(--primary-hover);
}

.license-text-container {
  padding: 0 1.5rem 1.5rem 1.5rem;
}

pre.license-text {
  background-color: var(--bg-primary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 250px;
  overflow-y: auto;
}

@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  h1 {
    font-size: 1.85rem;
  }
  
  h2 {
    font-size: 1.45rem;
    margin-top: 1.5rem;
  }
  
  .hero h1 {
    font-size: 2.25rem;
  }
  
  .bg-decor,
  .bg-decor-2 {
    display: none;
  }
  
  .container {
    padding: 2rem 1rem;
  }
  
  .content-container {
    padding: 1.5rem 0.75rem;
  }
  
  .nav-container {
    flex-direction: column;
    gap: 0.75rem;
    padding: 0.85rem;
  }
  
  .logo-link {
    font-size: 1.2rem;
    gap: 0.5rem;
  }
  
  .logo-img {
    width: 28px;
    height: 28px;
  }
  
  .nav-links {
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.35rem 0.5rem;
  }
  
  .nav-item a {
    font-size: 0.8rem;
    padding: 0.35rem 0.5rem;
  }
  
  .hero {
    padding: 1.5rem 0;
  }
  
  .hero-cta {
    flex-direction: column;
    width: 100%;
    max-width: 320px;
    margin: 0 auto 2rem auto;
  }
  
  .btn {
    width: 100%;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }

  .article-header {
    margin-bottom: 1.75rem;
  }
  
  .article-content {
    padding: 1.5rem 1rem;
    border-radius: 8px;
  }
  
  .article-content section {
    margin-bottom: 1.75rem;
  }
  
  .footer-top {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  
  .footer-nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem 1rem;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    align-items: center;
    gap: 0.75rem;
  }
  
  .table-wrapper {
    margin-top: 1rem;
  }
  
  th, td {
    padding: 0.75rem 0.85rem;
    font-size: 0.85rem;
  }
}