@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Newsreader:opsz,wght@6..72,400;6..72,500;6..72,600&family=JetBrains+Mono:wght@400;500&display=swap");

:root {
  --bg-color: #171614;
  --bg-nav: rgba(23, 22, 20, 0.85);
  --text-primary: #ecebe6;
  --text-muted: #adaba4;
  --accent: #5b8dd9;
  --accent-glow: rgba(91, 141, 217, 0.15);
  --border-color: #2f2d2a;
  --card-bg: #1b1a18;
  --card-hover: #22201d;
  --btn-primary-bg: #ecebe6;
  --btn-primary-text: #171614;
  --btn-secondary-bg: #2b2a27;
  --btn-secondary-hover: #363431;
  --code-bg: #0e0d0c;

  --font-serif: "Newsreader", "Playfair Display", serif;
  --font-sans:
    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono:
    "JetBrains Mono", ui-monospace, SFMono-Regular, Consolas, monospace;
}

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

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

.site-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 5%;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(3rem, 6vw, 5rem);
  line-height: 1.05;
  margin-bottom: 1.5rem;
  letter-spacing: -0.03em;
}

h2, h2.section-title {
  font-size: 2.2rem;
  margin-top: 3.5rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

h3 {
  font-size: 1.5rem;
  margin-top: 2rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

p {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
}

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

a:hover {
  opacity: 0.8;
}

/* Navbar */
.navbar {
  display: flex;
  align-items: center;
  padding: 1.5rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-nav);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  margin-left: -5vw;
  margin-right: -5vw;
  padding-left: 5vw;
  padding-right: 5vw;
}

.nav-left {
  display: flex;
  align-items: center;
  margin-right: 3rem;
}

.nav-right {
  display: flex;
  align-items: center;
  margin-left: auto;
  gap: 1rem;
}

.nav-links {
  display: none;
  align-items: center;
  gap: 1.5rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 400;
  color: #ffffff;
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
}

.nav-links a {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 400;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: #ffffff;
  opacity: 1;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 500;
  padding: 0.8rem 1.5rem;
  border-radius: 8px;
  transition: all 0.2s ease;
  cursor: pointer;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background-color: #fff;
  opacity: 1;
}

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

.btn-secondary:hover {
  background-color: var(--btn-secondary-hover);
  opacity: 1;
}

.btn-nav {
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
}

.btn-nav:hover {
  background-color: var(--btn-secondary-hover);
}

/* Hero Section */
.hero-section {
  display: flex;
  flex-direction: column;
  gap: 4rem;
  padding: 6rem 0 4rem;
}

@media (min-width: 900px) {
  .hero-section {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.hero-content {
  flex: 1;
  max-width: 600px;
}

.hero-description {
  margin-bottom: 2.5rem;
  font-size: 1.25rem;
  line-height: 1.5;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Hero Visual — Pipeline */
.hero-visual {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  min-height: 360px;
}

.pipeline-visual {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  width: 100%;
  max-width: 400px;
}

.pipeline-stage {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1.25rem;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  transition: all 0.3s ease;
  position: relative;
}

.pipeline-stage:hover {
  background: var(--card-hover);
  border-color: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
  transform: translateX(4px);
}

.pipeline-stage .stage-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  min-width: 1.5rem;
}

.pipeline-stage .stage-name {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.95rem;
  flex: 1;
}

.pipeline-stage .stage-model {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  background: rgba(255,255,255,0.05);
  color: var(--text-muted);
}

.model-opus { color: #e8a87c; background: rgba(232,168,124,0.1); }
.model-sonnet { color: #82b1ff; background: rgba(130,177,255,0.1); }
.model-haiku { color: #a5d6a7; background: rgba(165,214,167,0.1); }

.pipeline-connector {
  width: 2px;
  height: 8px;
  background: var(--border-color);
  margin-left: 2rem;
}

/* Code Blocks */
.code-block {
  background: var(--code-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  margin: 2rem 0;
}

.code-header {
  background: var(--card-bg);
  padding: 0.75rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  overflow-x: auto;
  margin: 2rem 0;
}

.code-block pre {
  margin: 0;
  border: none;
  border-radius: 0;
}

code {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--text-primary);
}

p code, li code, td code {
  background: rgba(255, 255, 255, 0.05);
  padding: 0.2rem 0.4rem;
  border-radius: 6px;
  font-size: 0.85em;
  color: #b3d4fc;
}

.comment { color: #6e6b5e; }
.keyword { color: var(--accent); }

/* Agent Grid */
.agent-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.agent-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.75rem;
  transition: transform 0.2s ease, background 0.2s ease;
}

.agent-card:hover {
  background: var(--card-hover);
  transform: translateY(-2px);
}

.agent-card h3 {
  margin-top: 0;
  font-size: 1.15rem;
}

.agent-card p {
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
}

.agent-card .agent-model {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 0.25rem 0.7rem;
  border-radius: 5px;
  display: inline-block;
  margin-top: 0.5rem;
}

/* Cost Callout */
.callout {
  background: var(--accent-glow);
  border: 1px solid rgba(91, 141, 217, 0.3);
  border-radius: 16px;
  padding: 2.5rem;
  text-align: center;
  margin: 3rem 0;
}

.callout .big-number {
  font-family: var(--font-serif);
  font-size: 4rem;
  font-weight: 600;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.callout p {
  font-size: 1.2rem;
  margin-bottom: 0;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
  margin-top: 2rem;
}

.feature-title {
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.feature-item p {
  font-size: 1rem;
}

/* Footer */
.site-footer {
  margin-top: 8rem;
  padding: 3rem 0;
  border-top: 1px solid var(--border-color);
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
}

@media (min-width: 600px) {
  .footer-content {
    flex-direction: row;
    justify-content: space-between;
  }
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-serif);
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-links a {
  color: var(--text-muted);
}

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