:root {
  font-family: "IBM Plex Sans", "Trebuchet MS", sans-serif;
  --font-display: "Space Grotesk", "Avenir Next", sans-serif;
  --bg: #f7f6f2;
  --bg-alt: #ffffff;
  --text: #111111;
  --muted: #475569;
  --border: rgba(15, 23, 42, 0.12);
  --panel: rgba(255, 255, 255, 0.85);
  --shadow: 0 24px 60px rgba(15, 23, 42, 0.08);
  --mint: #18c6ac;
  --ember: #f4a261;
  --ink: #0f172a;
  --accent: #0ea5e9;
  --hero-gradient: radial-gradient(circle at 20% 20%, rgba(24, 198, 172, 0.18), transparent 55%),
    radial-gradient(circle at 80% 0%, rgba(244, 162, 97, 0.18), transparent 50%),
    linear-gradient(180deg, #f7f6f2, #eceae4 70%);
  --diagram-stroke: rgba(15, 23, 42, 0.4);
  --diagram-fill: rgba(255, 255, 255, 0.85);
  --diagram-accent: rgba(14, 165, 233, 0.18);
}

[data-theme="dark"] {
  --bg: #07090a;
  --bg-alt: #0b0f10;
  --text: #f8fafc;
  --muted: #9ca3af;
  --border: rgba(255, 255, 255, 0.12);
  --panel: rgba(12, 12, 12, 0.9);
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.45);
  --ink: #e2e8f0;
  --accent: #38bdf8;
  --hero-gradient: radial-gradient(circle at 20% 10%, rgba(24, 198, 172, 0.18), transparent 55%),
    radial-gradient(circle at 80% 0%, rgba(244, 162, 97, 0.2), transparent 50%),
    linear-gradient(180deg, #0b0e0e, #050505 65%);
  --diagram-stroke: rgba(248, 250, 252, 0.5);
  --diagram-fill: rgba(255, 255, 255, 0.08);
  --diagram-accent: rgba(56, 189, 248, 0.22);
}

* {
  box-sizing: border-box;
}

img {
  max-width: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: var(--ember);
  text-decoration: none;
}

a:hover {
  color: var(--accent);
}

a:visited {
  color: #c97a4a;
}

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-nav {
  position: sticky;
  top: 0;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  z-index: 10;
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 6vw;
  position: relative;
}

.brand {
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.brand img {
  height: 28px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  font-size: 1rem;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.nav-links a {
  font-weight: 500;
}

.nav-github {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text);
  background: var(--bg-alt);
}

.nav-github svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
  transform: none;
}

[data-theme="dark"] .nav-github {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.25);
  color: #f8fafc;
}

.nav-links a[aria-current="page"] {
  color: var(--accent);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--border);
  background: transparent;
  padding: 0.45rem 0.55rem;
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--text);
  justify-self: end;
}

.nav-toggle .burger,
.nav-toggle .burger::before,
.nav-toggle .burger::after {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 999px;
  content: "";
}

.nav-toggle .burger {
  position: relative;
}

.nav-toggle .burger::before {
  position: absolute;
  top: -6px;
  left: 0;
}

.nav-toggle .burger::after {
  position: absolute;
  top: 6px;
  left: 0;
}

.theme-toggle {
  border: 1px solid var(--border);
  background: var(--bg-alt);
  padding: 0;
  width: 36px;
  height: 36px;
  border-radius: 999px;
  font-size: 0.8rem;
  cursor: pointer;
  display: inline-flex;
  gap: 0.4rem;
  align-items: center;
  justify-content: center;
  justify-self: end;
  margin-right: 0.35rem;
}

[data-theme="dark"] .theme-toggle {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.25);
  color: #f8fafc;
}

.theme-toggle .sun,
.theme-toggle .moon {
  display: none;
}

[data-theme="dark"] .theme-toggle .sun,
[data-theme="dark"] .theme-toggle .moon {
  color: #f8fafc;
}

.theme-toggle::before {
  content: "";
  width: 16px;
  height: 16px;
  border-radius: 999px;
  background: #1f2933;
  box-shadow: inset 6px 0 0 0 var(--bg-alt);
}

[data-theme="dark"] .theme-toggle::before {
  background: #f8fafc;
  box-shadow: 0 -8px 0 -6px #f8fafc, 0 8px 0 -6px #f8fafc,
    8px 0 0 -6px #f8fafc, -8px 0 0 -6px #f8fafc,
    6px 6px 0 -6px #f8fafc, -6px -6px 0 -6px #f8fafc,
    6px -6px 0 -6px #f8fafc, -6px 6px 0 -6px #f8fafc;
}

.content {
  flex: 1;
  padding: 2.5rem 6vw 4rem;
}

.content-inner {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.hero {
  padding: 3.5rem 3.5rem 4rem;
  border-radius: 28px;
  background: var(--hero-gradient);
  box-shadow: var(--shadow);
  display: grid;
  gap: 2rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 4vw, 3.8rem);
  margin: 0;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.7rem;
  color: var(--ember);
  margin: 0;
  font-family: var(--font-display);
}

.hero p {
  font-size: 1.1rem;
  max-width: 680px;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.3rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  background: var(--accent);
  color: #fff;
  box-shadow: 0 18px 40px rgba(14, 165, 233, 0.2);
}

.button:link,
.button:visited {
  color: #fff;
}

.button.secondary {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
  box-shadow: none;
}

.button.secondary:link,
.button.secondary:visited {
  color: var(--text);
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.badge-row img {
  height: 24px;
}

.section {
  margin-top: 3rem;
}

.section h2 {
  font-family: var(--font-display);
  margin-bottom: 1rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.25rem;
}

.card {
  padding: 1.4rem;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.card h3 {
  margin-top: 0;
  font-family: var(--font-display);
}

.card .button {
  margin-top: 0.75rem;
}

.code-block {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.2rem;
  overflow-x: auto;
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, SFMono-Regular, Menlo, monospace;
  font-size: 0.9rem;
}

.doc-content {
  max-width: 1200px;
  min-width: 0;
}

.doc-shell {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
}

.doc-sidebar {
  position: sticky;
  top: 6.5rem;
  align-self: start;
  padding: 1.2rem;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.doc-sidebar-title {
  font-family: var(--font-display);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.7rem;
  color: var(--muted);
  margin-bottom: 0.75rem;
}

.doc-sidebar-nav {
  display: grid;
  gap: 0.4rem;
}

.doc-sidebar-nav a {
  padding: 0.35rem 0.5rem;
  border-radius: 10px;
  color: var(--text);
  font-size: 0.95rem;
}

.doc-sidebar-nav a[aria-current="page"] {
  background: rgba(14, 165, 233, 0.14);
  color: var(--text);
}

.doc-content h1,
.doc-content h2,
.doc-content h3 {
  font-family: var(--font-display);
}

.doc-content pre,
.doc-content .highlight {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem 1.1rem;
  overflow-x: auto;
  box-shadow: var(--shadow);
}

.doc-content .highlight pre {
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
}

.doc-content code {
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

.doc-content :not(pre) > code {
  background: rgba(14, 165, 233, 0.12);
  border: 1px solid rgba(14, 165, 233, 0.2);
  border-radius: 8px;
  padding: 0.1rem 0.35rem;
}

.doc-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
}

.doc-content th,
.doc-content td {
  border-bottom: 1px solid var(--border);
  padding: 0.6rem 0.4rem;
  text-align: left;
}

.diagram {
  margin: 2rem 0;
  padding: 1.6rem;
  border: 1px solid rgba(15, 23, 42, 0.2);
  border-radius: 20px;
  background: radial-gradient(600px 240px at 10% 0%, rgba(14, 165, 233, 0.2), transparent 60%),
    radial-gradient(520px 240px at 90% 20%, rgba(244, 162, 97, 0.2), transparent 55%),
    #0a0a0a;
  box-shadow: 0 28px 60px rgba(15, 23, 42, 0.2);
  position: relative;
  overflow: hidden;
  --diagram-text: #e2e8f0;
  --diagram-label: #94a3b8;
  --diagram-stroke: rgba(226, 232, 240, 0.55);
  --diagram-fill: rgba(15, 23, 42, 0.9);
  --diagram-accent: rgba(56, 189, 248, 0.35);
}

.diagram::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
      0deg,
      transparent,
      transparent 22px,
      rgba(255, 255, 255, 0.06) 22px,
      rgba(255, 255, 255, 0.06) 23px
    ),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 28px,
      rgba(255, 255, 255, 0.06) 28px,
      rgba(255, 255, 255, 0.06) 29px
    );
  pointer-events: none;
  opacity: 0.45;
}

.diagram-label {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.7rem;
  color: var(--diagram-label);
  margin-bottom: 0.75rem;
  position: relative;
  z-index: 1;
}

.diagram svg {
  width: 100%;
  height: auto;
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 16px 30px rgba(15, 23, 42, 0.45));
}

.diagram svg text {
  fill: var(--diagram-text);
  font-family: var(--font-display);
}

.diagram + .hero-actions {
  margin-top: 1.5rem;
}

.quickstart-flow {
  display: grid;
  gap: 2.6rem;
  margin-top: 1.5rem;
  max-width: 920px;
}

.quickstart-card {
  position: relative;
  padding: 1.6rem 1.8rem;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.quickstart-card h3 {
  margin-top: 0;
  font-family: var(--font-display);
}

.quickstart-card .code-block {
  margin: 0;
}

.quickstart-card::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -1.9rem;
  width: 3px;
  height: 1.3rem;
  background: linear-gradient(180deg, rgba(244, 162, 97, 0), rgba(244, 162, 97, 0.95));
  transform: translateX(-50%);
}

.quickstart-card::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -2.3rem;
  border-left: 7px solid transparent;
  border-right: 7px solid transparent;
  border-top: 9px solid var(--ember);
  transform: translateX(-50%);
}

.quickstart-card:last-child::before,
.quickstart-card:last-child::after {
  display: none;
}

.quickstart-flow + .hero-actions {
  margin-top: 2.2rem;
}

[data-theme="dark"] .diagram::before {
  background: repeating-linear-gradient(
      0deg,
      transparent,
      transparent 22px,
      rgba(255, 255, 255, 0.1) 22px,
      rgba(255, 255, 255, 0.1) 23px
    ),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 28px,
      rgba(255, 255, 255, 0.1) 28px,
      rgba(255, 255, 255, 0.1) 29px
    );
  opacity: 0.3;
}

[data-theme="dark"] .diagram svg {
  filter: drop-shadow(0 20px 36px rgba(0, 0, 0, 0.65));
}

[data-theme="dark"] .diagram {
  border-color: rgba(255, 255, 255, 0.12);
  background: radial-gradient(600px 240px at 10% 0%, rgba(56, 189, 248, 0.18), transparent 60%),
    radial-gradient(520px 240px at 90% 20%, rgba(244, 162, 97, 0.22), transparent 55%),
    #050505;
  --diagram-text: #f8fafc;
  --diagram-label: #cbd5f5;
  --diagram-stroke: rgba(248, 250, 252, 0.55);
  --diagram-fill: rgba(9, 9, 9, 0.9);
  --diagram-accent: rgba(56, 189, 248, 0.4);
}

.step-grid {
  display: grid;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.step-card {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.25rem;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.step-card h3 {
  margin-top: 0;
  font-family: var(--font-display);
}

.format-card {
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  background: var(--panel);
  box-shadow: var(--shadow);
  margin: 1.5rem 0;
}

.format-row {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1.4fr;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.92rem;
}

.format-row.header {
  background: rgba(14, 165, 233, 0.12);
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.7rem;
  font-weight: 600;
}

.format-row:last-child {
  border-bottom: none;
}

.hero-list {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
  display: grid;
  gap: 0.35rem;
}

.site-footer {
  padding: 2rem 6vw 3rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-alt);
}

.comparison {
  margin-top: 2rem;
}

.comparison-hero {
  display: grid;
  gap: 1.25rem;
  margin-bottom: 2rem;
  padding: 1.8rem;
  border-radius: 18px;
  background: var(--panel);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.comparison-hero h1 {
  margin: 0;
}

.comparison-hero p {
  margin: 0;
  color: var(--muted);
}

.comparison-highlights {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.comparison-highlights .card {
  background: transparent;
  box-shadow: none;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.comparison-table th,
.comparison-table td {
  padding: 0.9rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  font-size: 0.95rem;
}

.comparison-table thead {
  background: rgba(15, 23, 42, 0.12);
}

[data-theme="dark"] .comparison-table thead {
  background: rgba(255, 255, 255, 0.08);
}

.comparison-table th.kafscale {
  background: rgba(14, 165, 233, 0.2);
}

.comparison-table .kafscale {
  background: rgba(14, 165, 233, 0.12);
  font-weight: 600;
}

.comparison-table .section-row td {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.7rem;
  background: rgba(15, 23, 42, 0.08);
}

[data-theme="dark"] .comparison-table .section-row td {
  background: rgba(255, 255, 255, 0.05);
}

.badge {
  display: inline-flex;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
}

.badge-success {
  background: rgba(34, 197, 94, 0.16);
  color: #16a34a;
}

.badge-warning {
  background: rgba(245, 158, 11, 0.16);
  color: #b45309;
}

.badge-danger {
  background: rgba(239, 68, 68, 0.16);
  color: #dc2626;
}

.badge-neutral {
  background: rgba(148, 163, 184, 0.2);
  color: #64748b;
}

.pricing-table {
  margin-top: 2rem;
}

.pricing-table table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.pricing-table th,
.pricing-table td {
  padding: 0.85rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
}

.pricing-table th.kafscale {
  background: rgba(14, 165, 233, 0.2);
}

.pricing-table .kafscale {
  background: rgba(14, 165, 233, 0.12);
  font-weight: 600;
}

.mobile-cards {
  display: none;
  margin-top: 1.5rem;
}

.product-card {
  background: var(--panel);
  border-radius: 16px;
  padding: 1.5rem;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  margin-bottom: 1.25rem;
}

.comparison-stack {
  display: grid;
  gap: 1.5rem;
  margin-top: 2rem;
}

.product-card.highlight {
  border-color: var(--accent);
}

.product-card h3 {
  margin-top: 0;
  font-family: var(--font-display);
}

.product-card .tagline {
  color: var(--muted);
  margin-bottom: 1rem;
}

.spec-row {
  display: flex;
  justify-content: space-between;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.spec-row:last-child {
  border-bottom: none;
}

.spec-label {
  color: var(--muted);
}

.footer-badges img {
  max-height: 36px;
  filter: grayscale(1);
  opacity: 0.8;
}

@media (max-width: 960px) {
  .site-nav {
    grid-template-columns: auto 1fr auto auto;
    grid-template-rows: auto auto;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    grid-column: 1 / -1;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--panel);
    box-shadow: var(--shadow);
    position: static;
    transform: none;
  }

  .nav-links.open {
    display: flex;
  }

  .comparison-table {
    display: none;
  }

  .mobile-cards {
    display: block;
  }

  .doc-shell {
    grid-template-columns: 1fr;
  }

  .doc-sidebar {
    position: static;
    order: 2;
  }

  .doc-content {
    order: 1;
  }
}

@media (max-width: 720px) {
  .hero {
    padding: 2.25rem 1.8rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .badge-row img {
    height: 20px;
  }

  .format-row {
    grid-template-columns: 1fr;
  }

  .theme-toggle {
    padding: 0;
    width: 36px;
    height: 36px;
    justify-content: center;
  }

  .theme-toggle .sun,
  .theme-toggle .moon {
    display: none;
  }

  .theme-toggle::before {
    content: "";
    width: 16px;
    height: 16px;
    border-radius: 999px;
    background: var(--ember);
    box-shadow: 0 -8px 0 -6px var(--ember), 0 8px 0 -6px var(--ember),
      8px 0 0 -6px var(--ember), -8px 0 0 -6px var(--ember),
      6px 6px 0 -6px var(--ember), -6px -6px 0 -6px var(--ember),
      6px -6px 0 -6px var(--ember), -6px 6px 0 -6px var(--ember);
  }

  [data-theme="dark"] .theme-toggle::before {
    background: #f8fafc;
    box-shadow: inset -5px 0 0 0 var(--bg-alt);
  }
}