/* ---- Reset & Base ---- */

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: #e0e0e0;
  background-color: #0d1117;
}

a {
  color: #04adef;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ---- Layout ---- */

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

.section-alt {
  background-color: #161b22;
}

/* ---- Typography ---- */

h1 {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
  color: #f0f6fc;
  margin-bottom: 1.25rem;
}

h2 {
  font-size: 1.75rem;
  font-weight: 600;
  line-height: 1.3;
  color: #f0f6fc;
  margin-bottom: 1.25rem;
}

h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #f0f6fc;
  margin-bottom: 0.75rem;
}

p {
  margin-bottom: 1rem;
}

.section-intro {
  font-size: 1.125rem;
  color: #b1bac4;
  max-width: 680px;
}

/* ---- Top Bar ---- */

.topbar {
  padding: 1rem 0;
  background-color: #161b22;
  border-bottom: 1px solid #21262d;
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.topbar-logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
}

.topbar-logo:hover {
  text-decoration: none;
}

.topbar-logo-img {
  width: 28px;
  height: auto;
}

.topbar-logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: #f0f6fc;
}

.topbar-logo-dot {
  color: #9bf316;
}

.topbar-links {
  display: flex;
  gap: 1.5rem;
}

.topbar-links a {
  color: #8b949e;
  font-size: 0.875rem;
  text-decoration: none;
}

.topbar-links a:hover {
  color: #f0f6fc;
  text-decoration: none;
}

/* ---- Hero ---- */

.hero {
  padding: 3rem 0 1rem;
  text-align: center;
  background: linear-gradient(180deg, #161b22 0%, #0d1117 100%);
}

.hero h1 {
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.hero .btn-secondary {
  background-color: #241775;
  border-color: #352a6e;
  color: #f0f6fc;
}

.arch-diagram {
  margin-top: 3rem;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.arch-diagram img {
  display: block;
  width: 100%;
  height: auto;
}

.subhead {
  font-size: 1.125rem;
  color: #b1bac4;
  max-width: 640px;
  margin: 0 auto 2rem;
}

/* ---- Buttons ---- */

.cta-group {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: background-color 0.15s ease;
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background-color: #9bf316;
  color: #0d1117;
}

.btn-primary:hover {
  background-color: #b2f54e;
}

.btn-secondary {
  background-color: #21262d;
  color: #c9d1d9;
  border: 1px solid #352a6e;
}

.btn-secondary:hover {
  background-color: #241775;
  border-color: #9bf316;
  color: #f0f6fc;
}

/* ---- Feature Grid (What zrok does) ---- */

.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-top: 2.5rem;
}

.feature {
  padding: 1.5rem;
  background-color: #0d1117;
  border: 1px solid #21262d;
  border-radius: 8px;
}

.section-alt .feature {
  background-color: #0d1117;
}

/* ---- Gateway Grid (Two Gateways) ---- */

.gateway-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-top: 2rem;
}

.gateway {
  padding: 2rem;
  background-color: #161b22;
  border: 1px solid #21262d;
  border-radius: 8px;
}

.gateway-tagline {
  color: #b1bac4;
  font-size: 1.05rem;
  margin-bottom: 1.25rem;
}

.gateway ul {
  list-style: none;
  padding: 0;
  margin-bottom: 1.5rem;
}

.gateway li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.5rem;
  color: #b1bac4;
}

.gateway li::before {
  content: "\2022";
  position: absolute;
  left: 0;
  color: #9bf316;
}

/* ---- Gateway Feature Cards ---- */

.gateway-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.gateway-feature {
  padding: 1.25rem;
  background-color: #0d1117;
  border: 1px solid #21262d;
  border-radius: 6px;
}

.feature-icon {
  width: 28px;
  height: 28px;
  color: #9bf316;
  margin-bottom: 0.75rem;
  flex-shrink: 0;
}

.gateway-feature h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: #f0f6fc;
  margin-bottom: 0.5rem;
}

.gateway-feature p {
  font-size: 0.875rem;
  color: #b1bac4;
  margin-bottom: 0;
  line-height: 1.5;
}

.gateway-feature code {
  font-size: 0.8125rem;
  background-color: #161b22;
  padding: 0.125rem 0.375rem;
  border-radius: 3px;
}

.drop-in-note {
  margin-top: 2.5rem;
  color: #8b949e;
  font-size: 0.95rem;
  text-align: center;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

/* ---- Better Together ---- */

.together-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-top: 2rem;
}

.together-item {
  padding: 1.5rem;
  background-color: #0d1117;
  border: 1px solid #21262d;
  border-radius: 8px;
}

.together-item p {
  color: #b1bac4;
  margin-bottom: 0;
}

/* ---- Code Blocks ---- */

pre {
  background-color: #0d1117;
  border: 1px solid #21262d;
  border-radius: 6px;
  padding: 1rem 1.25rem;
  overflow-x: auto;
  max-width: 100%;
  margin-bottom: 1.25rem;
  font-size: 0.875rem;
  line-height: 1.5;
}

code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  color: #e6edf3;
  word-break: break-all;
}

.comment {
  color: #8b949e;
}

.key {
  color: #9bf316;
}

.string {
  color: #04adef;
}

/* ---- Principles (How It Works) ---- */

.principles {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 2rem;
  margin-bottom: 2.5rem;
}

.principle {
  padding: 1.5rem;
  background-color: #0d1117;
  border: 1px solid #21262d;
  border-radius: 8px;
}

.principle p {
  color: #b1bac4;
  margin-bottom: 0;
}

.learn-more {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ---- Get Started ---- */

.start-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-top: 2rem;
}

.start-option {
  padding: 1.5rem;
  background-color: #161b22;
  border: 1px solid #21262d;
  border-radius: 8px;
  overflow: hidden;
  min-width: 0;
}

.start-option p {
  color: #b1bac4;
}

.start-option a {
  font-weight: 600;
}

/* ---- Footer ---- */

.footer {
  padding: 3rem 0;
  border-top: 1px solid #21262d;
  text-align: center;
}

.footer p {
  color: #8b949e;
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

.footer-links a {
  color: #8b949e;
  font-size: 0.875rem;
}

.footer-links a:hover {
  color: #c9d1d9;
}

/* ---- Responsive ---- */

@media (min-width: 640px) {
  .feature-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .start-grid {
    grid-template-columns: 1fr 1fr;
  }

  .start-option:nth-child(1),
  .start-option:nth-child(2) {
    grid-column: 1 / -1;
  }

  .together-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 639px) {
  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.375rem;
  }

  .hero {
    padding: 4rem 0 3rem;
  }

  .section {
    padding: 3rem 0;
  }

  .gateway-features {
    grid-template-columns: 1fr;
  }

  .principles {
    grid-template-columns: 1fr;
  }
}