/* ============================================
   loon — Custom Landing Page Styles
   Design: Modern C++ library site inspired by
   TensorFlow / Boost / Tailwind CSS
   ============================================ */

/* -- Color System -- */
:root {
  --loon-brand: #1a6b5a;
  --loon-brand-light: #2e9fc4;
  --loon-brand-dark: #0d4a3e;
  --loon-brand-bg: #f0faf7;
  --loon-accent: #e8f4f0;
  --loon-surface: #ffffff;
  --loon-surface-alt: #f8fafb;
  --loon-text: #1a1a2e;
  --loon-text-muted: #5a6370;
  --loon-border: #e2e8f0;
  --loon-code-bg: #0f1923;
  --loon-code-text: #e2e8f0;
  --loon-gradient-start: #f0faf7;
  --loon-gradient-end: #e6f2fb;
  --md-primary-fg-color: #1a6b5a;
  --md-primary-fg-color--light: #2e9fc4;
  --md-primary-fg-color--dark: #0d4a3e;
  --md-accent-fg-color: #2e9fc4;
}

[data-md-color-scheme="slate"] {
  --loon-brand: #3dd9a4;
  --loon-brand-light: #4ec5e0;
  --loon-brand-dark: #2bb88a;
  --loon-brand-bg: #0d1117;
  --loon-accent: #131d2a;
  --loon-surface: #161b22;
  --loon-surface-alt: #0d1117;
  --loon-text: #e6edf3;
  --loon-text-muted: #8b949e;
  --loon-border: #21262d;
  --loon-code-bg: #0a0f16;
  --loon-code-text: #c9d1d9;
  --loon-gradient-start: #0d1117;
  --loon-gradient-end: #0d1520;
  --md-primary-fg-color: #3dd9a4;
  --md-primary-fg-color--light: #4ec5e0;
  --md-primary-fg-color--dark: #2bb88a;
  --md-accent-fg-color: #4ec5e0;
}

/* -- Global Resets for Landing -- */
.md-main__inner {
  margin-top: 0;
}

.loon-hero ~ .md-sidebar,
.loon-hero ~ .md-content__inner > .md-content__button {
  display: none;
}

/* -- Hero Section -- */
.loon-hero {
  background: linear-gradient(135deg, var(--loon-gradient-start) 0%, var(--loon-gradient-end) 100%);
  padding: 5rem 2rem 4rem;
  border-bottom: 1px solid var(--loon-border);
}

.loon-hero__inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.loon-hero__badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--loon-brand);
  background: var(--loon-accent);
  border: 1px solid var(--loon-brand);
  border-radius: 100px;
  padding: 0.35rem 1rem;
  margin-bottom: 1.5rem;
}

.loon-hero__title {
  font-size: 4rem;
  font-weight: 700;
  line-height: 1.05;
  margin: 0 0 1rem;
  color: var(--loon-text);
  letter-spacing: -0.03em;
}

.loon-hero__logo-text {
  background: linear-gradient(135deg, var(--loon-brand) 0%, var(--loon-brand-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.loon-hero__subtitle {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--loon-text);
  margin: 0 0 1rem;
  line-height: 1.5;
}

.loon-hero__desc {
  font-size: 1rem;
  color: var(--loon-text-muted);
  line-height: 1.7;
  margin: 0 0 2rem;
  max-width: 520px;
}

.loon-hero__actions {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.loon-btn--primary {
  background: var(--loon-brand) !important;
  color: #fff !important;
  border: none !important;
  font-weight: 600 !important;
  padding: 0.7rem 2rem !important;
  border-radius: 8px !important;
  transition: all 0.2s ease !important;
}

.loon-btn--primary:hover {
  background: var(--loon-brand-dark) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(26, 107, 90, 0.25);
}

.loon-btn--secondary {
  background: transparent !important;
  color: var(--loon-text) !important;
  border: 1px solid var(--loon-border) !important;
  font-weight: 500 !important;
  padding: 0.7rem 2rem !important;
  border-radius: 8px !important;
  transition: all 0.2s ease !important;
}

.loon-btn--secondary:hover {
  border-color: var(--loon-brand) !important;
  color: var(--loon-brand) !important;
  transform: translateY(-1px);
}

.loon-hero__install {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.loon-hero__install-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--loon-text-muted);
  white-space: nowrap;
}

.loon-hero__install-code {
  background: var(--loon-code-bg);
  padding: 0.5rem 1rem;
  border-radius: 6px;
  overflow-x: auto;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.loon-copy-btn {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #94a3b8;
  cursor: pointer;
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 1rem;
  line-height: 1;
  transition: color 0.2s ease, border-color 0.2s ease;
  flex-shrink: 0;
}

.loon-copy-btn:hover {
  color: #e2e8f0;
  border-color: rgba(255, 255, 255, 0.4);
}

.loon-hero__install-code code {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.85rem;
  color: #f0f4f8 !important;
  background: transparent !important;
  border: none !important;
  padding: 0 !important;
}

/* -- Code Window in Hero -- */
.loon-hero__visual {
  display: flex;
  justify-content: center;
}

.loon-hero__code-window {
  background: var(--loon-code-bg);
  border-radius: 12px;
  overflow: hidden;
  width: 100%;
  max-width: 540px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15),
              0 1px 3px rgba(0, 0, 0, 0.1);
}

.loon-hero__code-dots {
  display: flex;
  gap: 6px;
  padding: 14px 16px 0;
}

.loon-hero__code-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #3a3f4b;
}

.loon-hero__code-dots span:first-child { background: #ff5f57; }
.loon-hero__code-dots span:nth-child(2) { background: #febc2e; }
.loon-hero__code-dots span:nth-child(3) { background: #28c840; }

.loon-hero__code {
  padding: 1.25rem 1.5rem;
  margin: 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--loon-code-text);
  overflow-x: auto;
}

.loon-hero__code .cp { color: #c678dd; }
.loon-hero__code .s { color: #98c379; }
.loon-hero__code .c { color: #5c6370; font-style: italic; }
.loon-hero__code .n { color: #61afef; }
.loon-hero__code .nf { color: #e5c07b; }
.loon-hero__code .kt { color: #c678dd; }
.loon-hero__code .m { color: #d19a66; }

/* -- Section Shared -- */
.loon-section__title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--loon-text);
  text-align: center;
  margin: 0 0 3rem;
  letter-spacing: -0.02em;
}

/* -- Features Section -- */
.loon-features {
  padding: 5rem 2rem;
  background: var(--loon-surface);
}

.loon-features__inner {
  max-width: 1100px;
  margin: 0 auto;
}

.loon-features__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.loon-feature {
  padding: 2rem;
  border: 1px solid var(--loon-border);
  border-radius: 12px;
  background: var(--loon-surface-alt);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.loon-feature:hover {
  border-color: var(--loon-brand);
  transform: translateY(-2px);
}

.loon-feature__icon {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.loon-feature__title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--loon-text);
  margin: 0 0 0.5rem;
}

.loon-feature__desc {
  font-size: 0.92rem;
  color: var(--loon-text-muted);
  line-height: 1.65;
  margin: 0;
}

/* -- Components Section -- */
.loon-components {
  padding: 5rem 2rem;
  background: var(--loon-surface-alt);
  border-top: 1px solid var(--loon-border);
}

.loon-components__inner {
  max-width: 1100px;
  margin: 0 auto;
}

.loon-components__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.loon-component {
  display: block;
  padding: 1.75rem;
  border: 1px solid var(--loon-border);
  border-radius: 12px;
  background: var(--loon-surface);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.loon-component:hover {
  border-color: var(--loon-brand);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  color: inherit;
  text-decoration: none;
}

.loon-component__header {
  margin-bottom: 0.75rem;
}

.loon-component__file {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.78rem;
  background: var(--loon-accent);
  color: var(--loon-brand);
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
  font-weight: 500;
}

.loon-component__title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--loon-text);
  margin: 0 0 0.4rem;
}

.loon-component__desc {
  font-size: 0.9rem;
  color: var(--loon-text-muted);
  line-height: 1.6;
  margin: 0;
}

/* -- Use Cases Section -- */
.loon-usecases {
  padding: 5rem 2rem;
  background: var(--loon-surface);
  border-top: 1px solid var(--loon-border);
}

.loon-usecases__inner {
  max-width: 1100px;
  margin: 0 auto;
}

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

.loon-usecase {
  text-align: center;
  padding: 2rem 1.25rem;
  border: 1px solid var(--loon-border);
  border-radius: 12px;
  background: var(--loon-surface-alt);
}

.loon-usecase__tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--loon-brand);
  background: var(--loon-accent);
  border-radius: 100px;
  padding: 0.3rem 1rem;
  margin-bottom: 0.75rem;
}

.loon-usecase p {
  font-size: 0.88rem;
  color: var(--loon-text-muted);
  line-height: 1.55;
  margin: 0;
}

/* -- CTA Section -- */
.loon-cta {
  padding: 5rem 2rem;
  background: linear-gradient(135deg, var(--loon-gradient-start) 0%, var(--loon-gradient-end) 100%);
  border-top: 1px solid var(--loon-border);
  text-align: center;
}

.loon-cta__inner {
  max-width: 600px;
  margin: 0 auto;
}

.loon-cta__title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--loon-text);
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}

.loon-cta__desc {
  font-size: 1.05rem;
  color: var(--loon-text-muted);
  margin: 0 0 2rem;
  line-height: 1.6;
}

.loon-cta__actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* -- Responsive -- */
@media (max-width: 900px) {
  .loon-hero__inner {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .loon-hero__title {
    font-size: 2.75rem;
  }

  .loon-hero__visual {
    order: -1;
  }

  .loon-features__grid,
  .loon-components__grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 600px) {
  .loon-hero {
    padding: 3rem 1.25rem 2.5rem;
  }

  .loon-hero__title {
    font-size: 2.25rem;
  }

  .loon-hero__actions {
    flex-direction: column;
  }

  .loon-usecases__grid {
    grid-template-columns: 1fr;
  }

  .loon-hero__install {
    flex-direction: column;
    align-items: flex-start;
  }
}