:root {
  /* Colors */
  --brand-dark: #0f172a;
  --brand-light: #e2e8f0;
  --brand-accent: #3b82f6;
  --brand-accent-hover: #2563eb;
  --brand-card: #1e293b;

  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;

  --card-border: rgba(51, 65, 85, 0.5); /* slate-700 w/ opacity */

  /* Icon Backgrounds */
  --icon-bg-blue: rgba(59, 130, 246, 0.1);
  --icon-bg-purple: rgba(168, 85, 247, 0.1);
  --icon-bg-green: rgba(34, 197, 94, 0.1);
  --icon-bg-orange: rgba(249, 115, 22, 0.1);
  --icon-bg-teal: rgba(20, 184, 166, 0.1);

  /* Icon Colors */
  --icon-blue: #60a5fa;
  --icon-purple: #c084fc;
  --icon-green: #4ade80;
  --icon-orange: #fb923c;
  --icon-teal: #2dd4bf;

  --ad-bg: rgba(0, 0, 0, 0.2);
  --bg-section: rgba(0, 0, 0, 0.3);

  --max-width-xl: 80rem; /* 1280px */
  --max-width-md: 56rem; /* ~896px */
}

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

body {
  background-color: var(--brand-dark);
  color: var(--brand-light);
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.5;
  scroll-behavior: smooth;
}

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

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

/* Base Utility Classes */
.container {
  max-width: var(--max-width-xl);
  margin: 0 auto;
  padding: 0 1rem;
}
@media (min-width: 640px) {
  .container {
    padding: 0 1.5rem;
  }
}
@media (min-width: 1024px) {
  .container {
    padding: 0 2rem;
  }
}

.container-sm {
  max-width: var(--max-width-md);
  margin: 0 auto;
  padding: 0 1rem;
}

.text-center {
  text-align: center;
}
.flex {
  display: flex;
}
.items-center {
  align-items: center;
}
.justify-between {
  justify-content: space-between;
}
.justify-center {
  justify-content: center;
}
.gap-2 {
  gap: 0.5rem;
}
.gap-4 {
  gap: 1rem;
}
.gap-6 {
  gap: 1.5rem;
}
.hidden {
  display: none;
}
@media (min-width: 768px) {
  .md-block {
    display: block;
  }
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--slate-800);
}

.navbar-inner {
  height: 4rem;
}

.logo-text {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.025em;
}

.lucide {
  color: var(--brand-accent);
  width: 2rem;
  height: 2rem;
}

.nav-links {
  display: flex;
  margin-left: 2.5rem;
  gap: 2rem;
}

.nav-link {
  padding: 0.5rem 0.75rem;
  border-radius: 0.375rem;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-link:hover {
  color: #fff;
}

.btn-github {
  background-color: rgba(255, 255, 255, 0.1);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background-color 0.2s;
}
.btn-github:hover {
  background-color: rgba(255, 255, 255, 0.2);
}
.btn-github .lucide {
  width: 1rem;
  height: 1rem;
  color: #fff;
}

/* Ads Section */
.ad-section {
  width: 100%;
  padding: 1rem 0;
  background-color: var(--ad-bg);
  border-bottom: 1px solid var(--slate-800);
}

.ad-placeholder {
  background: repeating-linear-gradient(
    45deg,
    #1e293b,
    #1e293b 10px,
    #0f172a 10px,
    #0f172a 20px
  );
  border: 1px dashed #475569;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #94a3b8;
  font-size: 0.875rem;
  text-align: center;
  overflow: hidden;
  border-radius: 0.25rem;
}

.ad-leaderboard {
  width: 100%;
  max-width: 728px;
  height: 90px;
}

.ad-billboard {
  width: 100%;
  max-width: 970px;
  height: 90px;
  border-radius: 0.75rem;
}
@media (min-width: 768px) {
  .ad-billboard {
    height: 250px;
  }
}

.ad-rectangle {
  width: 100%;
  height: 100%;
  min-height: 200px;
  border-radius: 0.75rem;
}

.ad-text-small {
  font-size: 0.75rem;
  opacity: 0.7;
}

/* Hero Section */
.hero {
  padding: 5rem 0;
}

.badge {
  display: inline-block;
  padding: 0.375rem 1rem;
  border-radius: 9999px;
  background-color: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  color: var(--brand-accent);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: 3rem;
  line-height: 1;
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 1.5rem;
  background: linear-gradient(to right, #fff, #94a3b8);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
@media (min-width: 768px) {
  .hero-title {
    font-size: 4.5rem;
  }
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--slate-400);
  max-width: 42rem;
  margin: 1rem auto 2.5rem;
}
.hero-subtitle strong {
  color: #fff;
  font-weight: 500;
}

.action-buttons {
  flex-direction: column;
}
@media (min-width: 640px) {
  .action-buttons {
    flex-direction: row;
  }
}

.btn-primary {
  background-color: var(--brand-accent);
  color: #fff;
  padding: 1rem 2rem;
  border-radius: 0.75rem;
  font-weight: 700;
  transition:
    transform 0.2s,
    background-color 0.2s;
  box-shadow: 0 10px 15px -3px rgba(59, 130, 246, 0.2);
}
.btn-primary:hover {
  background-color: var(--brand-accent-hover);
  transform: scale(1.05);
}
.btn-primary .lucide {
  width: 1.25rem;
  height: 1.25rem;
  color: #fff;
}

.btn-secondary {
  background-color: var(--brand-card);
  border: 1px solid var(--slate-700);
  color: #fff;
  padding: 1rem 2rem;
  border-radius: 0.75rem;
  font-weight: 700;
  transition: background-color 0.2s;
}
.btn-secondary:hover {
  background-color: var(--slate-700);
}
.btn-secondary .lucide {
  width: 1.25rem;
  height: 1.25rem;
  color: #eab308;
}

/* Features Section */
.features-section {
  background-color: var(--bg-section);
  padding: 5rem 0;
  border-top: 1px solid var(--slate-800);
  border-bottom: 1px solid var(--slate-800);
}

.section-header {
  margin-bottom: 4rem;
  text-align: center;
}
.section-title {
  font-size: 1.875rem;
  font-weight: 700;
  margin-bottom: 1rem;
}
.section-subtitle {
  color: var(--slate-400);
  max-width: 42rem;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media (min-width: 768px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-card {
  background-color: var(--brand-card);
  padding: 1.5rem;
  border-radius: 1rem;
  border: 1px solid var(--card-border);
  transition: border-color 0.2s;
}
.feature-card:hover {
  border-color: rgba(59, 130, 246, 0.5);
}

.feature-ad-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0.5rem;
}
.feature-ad-card:hover {
  border-color: var(--card-border);
}

.feature-icon-wrapper {
  width: 3rem;
  height: 3rem;
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}
.feature-card:nth-child(1) .feature-icon-wrapper {
  background-color: var(--icon-bg-blue);
}
.feature-card:nth-child(1) .lucide {
  color: var(--icon-blue);
}

.feature-card:nth-child(2) .feature-icon-wrapper {
  background-color: var(--icon-bg-purple);
  border-color: rgba(168, 85, 247, 0.5);
}
.feature-card:nth-child(2) .lucide {
  color: var(--icon-purple);
}
.feature-card:nth-child(2):hover {
  border-color: rgba(168, 85, 247, 0.5);
}

.feature-card:nth-child(3) .feature-icon-wrapper {
  background-color: var(--icon-bg-green);
}
.feature-card:nth-child(3) .lucide {
  color: var(--icon-green);
}
.feature-card:nth-child(3):hover {
  border-color: rgba(34, 197, 94, 0.5);
}

.feature-card:nth-child(4) .feature-icon-wrapper {
  background-color: var(--icon-bg-orange);
}
.feature-card:nth-child(4) .lucide {
  color: var(--icon-orange);
}
.feature-card:nth-child(4):hover {
  border-color: rgba(249, 115, 22, 0.5);
}

.feature-card:nth-child(5) .feature-icon-wrapper {
  background-color: var(--icon-bg-teal);
}
.feature-card:nth-child(5) .lucide {
  color: var(--icon-teal);
}
.feature-card:nth-child(5):hover {
  border-color: rgba(20, 184, 166, 0.5);
}

.feature-card .lucide {
  width: 1.5rem;
  height: 1.5rem;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.feature-desc {
  color: var(--slate-400);
  font-size: 0.875rem;
}

/* How It Works Section */
.how-it-works {
  padding: 5rem 0;
}

.prose {
  color: var(--slate-300);
}
.prose p {
  margin-bottom: 1.5rem;
}
.prose strong {
  color: #fff;
  font-weight: 600;
}
.prose code {
  background-color: var(--slate-800);
  padding: 0.2em 0.4em;
  border-radius: 0.25rem;
  font-size: 0.875em;
  font-family: monospace;
}
.prose ul {
  list-style: none;
  margin: 1.5rem 0;
}
.prose li {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
}

.step-icon {
  background-color: rgba(59, 130, 246, 0.2);
  padding: 0.5rem;
  border-radius: 9999px;
  margin-top: 0.25rem;
}
.step-icon .lucide {
  color: var(--brand-accent);
  width: 1.25rem;
  height: 1.25rem;
}
.step-text strong {
  display: block;
}

/* Mid-page Ad Banner */
.mid-ad-banner {
  width: 100%;
  display: flex;
  justify-content: center;
  padding-bottom: 5rem;
  padding-left: 1rem;
  padding-right: 1rem;
}

/* Installation Section */
.install-section {
  background-color: var(--brand-card);
  padding: 5rem 0;
  border-top: 1px solid var(--slate-800);
}

.code-block-wrapper {
  background-color: #0d1117;
  border-radius: 0.75rem;
  border: 1px solid var(--slate-700);
  padding: 1.5rem;
  position: relative;
  overflow-x: auto;
}

.copy-button {
  position: absolute;
  top: 1rem;
  right: 1rem;
  color: var(--slate-400);
  background-color: var(--slate-800);
  padding: 0.5rem;
  border-radius: 0.5rem;
  border: none;
  cursor: pointer;
  opacity: 0;
  transition:
    opacity 0.2s,
    color 0.2s;
}
.code-block-wrapper:hover .copy-button {
  opacity: 1;
}
.copy-button:hover {
  color: #fff;
}
.copy-button .lucide {
  width: 1rem;
  height: 1rem;
  color: inherit;
}

.code-text {
  font-size: 0.875rem;
  font-family: monospace;
  color: #4ade80; /* green-400 */
}

.install-note {
  text-align: center;
  font-size: 0.875rem;
  color: var(--slate-500);
  margin-top: 1rem;
}

/* Footer */
.footer {
  background-color: #0a0f18;
  padding: 3rem 0;
  border-top: 1px solid var(--slate-800);
}
.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
@media (min-width: 768px) {
  .footer-content {
    flex-direction: row;
  }
}

.footer-creator {
  color: var(--slate-300);
  font-weight: 600;
}
.footer-creator .lucide {
  color: var(--slate-400);
  width: 1.5rem;
  height: 1.5rem;
}
.footer-creator a {
  color: var(--brand-accent);
}
.footer-creator a:hover {
  text-decoration: underline;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}
.footer-link {
  color: var(--slate-400);
  font-size: 0.875rem;
  transition: color 0.2s;
}
.footer-link:hover {
  color: #fff;
}
.footer-link.yt:hover {
  color: #ef4444;
}
.footer-link.coffee:hover {
  color: #eab308;
}
.footer-link .lucide {
  width: 1rem;
  height: 1rem;
  color: inherit;
}

.footer-legal {
  text-align: center;
  margin-top: 2rem;
  font-size: 0.75rem;
  color: var(--slate-600);
}