:root {
  --bg-primary: #0a0a0c;
  --bg-surface: #121316;
  --bg-card: #18191d;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(223, 255, 0, 0.4);
  --accent-volt: #dfff00;
  --accent-volt-hover: #ccee00;
  --text-primary: #f5f5f7;
  --text-secondary: #a1a1a6;
  --text-muted: #6e6e73;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --container-max: 1140px;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  text-decoration: underline;
}

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

/* Header & Nav */
header {
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(10, 10, 12, 0.85);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: block;
}

.logo-text {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text-primary);
}

.logo-text span {
  color: var(--accent-volt);
}

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

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  text-decoration: none;
}

.nav-btn {
  background: var(--accent-volt);
  color: #000 !important;
  font-weight: 700 !important;
  padding: 8px 18px;
  border-radius: 9999px;
  transition: transform 0.15s ease, background 0.15s ease;
}

.nav-btn:hover {
  background: var(--accent-volt-hover);
  transform: translateY(-1px);
}

/* Hero Section */
.hero {
  padding: 80px 0 60px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(223, 255, 0, 0.1);
  color: var(--accent-volt);
  border: 1px solid rgba(223, 255, 0, 0.25);
  padding: 6px 16px;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
}

.hero h1 span {
  background: linear-gradient(135deg, #dfff00 0%, #a6ff00 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 36px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--accent-volt);
  color: #000;
  font-weight: 700;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: all 0.2s ease;
}

.btn-primary:hover {
  background: var(--accent-volt-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(223, 255, 0, 0.25);
  text-decoration: none;
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  font-weight: 600;
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  border-color: var(--text-secondary);
  text-decoration: none;
}

/* Feature Showcase / Screenshots */
.screenshots-section {
  padding: 40px 0 80px;
}

.screenshots-scroll {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  padding: 20px 0 30px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.screenshots-scroll::-webkit-scrollbar {
  height: 6px;
}

.screenshots-scroll::-webkit-scrollbar-thumb {
  background: var(--border-subtle);
  border-radius: 3px;
}

.device-frame {
  flex: 0 0 280px;
  scroll-snap-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 10px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
  transition: transform 0.25s ease;
}

.device-frame:hover {
  transform: translateY(-6px);
  border-color: var(--border-focus);
}

.device-frame img {
  width: 100%;
  height: auto;
  border-radius: calc(var(--radius-lg) - 6px);
  display: block;
}

/* Value Props Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  padding: 60px 0;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: border-color 0.2s ease;
}

.feature-card:hover {
  border-color: var(--border-focus);
}

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

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Policy / Document Pages */
.doc-page {
  padding: 60px 0 100px;
  max-width: 800px;
  margin: 0 auto;
}

.doc-header {
  margin-bottom: 40px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 24px;
}

.doc-header h1 {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.doc-header .doc-meta {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.doc-content h2 {
  font-size: 1.45rem;
  margin: 32px 0 14px;
  color: var(--text-primary);
}

.doc-content h3 {
  font-size: 1.15rem;
  margin: 20px 0 10px;
  color: var(--accent-volt);
}

.doc-content p,
.doc-content ul {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 1rem;
}

.doc-content ul {
  padding-left: 24px;
}

.doc-content li {
  margin-bottom: 8px;
}

.highlight-box {
  background: rgba(223, 255, 0, 0.05);
  border-left: 4px solid var(--accent-volt);
  padding: 16px 20px;
  margin: 24px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.highlight-box p {
  color: var(--text-primary);
  margin: 0;
}

/* Developer & Organization Info Box */
.org-info-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 32px;
  margin: 60px 0;
}

.org-info-card h2 {
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.org-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.org-item-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.org-item-val {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 4px;
}

/* Footer */
footer {
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  padding: 48px 0 32px;
  margin-top: 80px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 36px;
}

.footer-brand p {
  color: var(--text-secondary);
  max-width: 320px;
  margin-top: 12px;
}

.footer-col h4 {
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 10px;
}

.footer-col a {
  color: var(--text-secondary);
}

.footer-col a:hover {
  color: var(--accent-volt);
}

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .navbar {
    flex-wrap: wrap;
    gap: 16px;
  }
}