:root {
  --bg-color: #0a0e17;
  --panel-bg: #111622;
  --panel-hover: #161c2a;
  --border-color: #1e293b;
  --border-focus: #334155;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dark: #64748b;
  --accent: #38bdf8;
  --accent-hover: #7dd3fc;
  --accent-glow: rgba(56, 189, 248, 0.1);
  --header-bg: rgba(10, 14, 23, 0.8);
  --hover-fill: rgba(255, 255, 255, 0.03);
  --control-bg: rgba(255, 255, 255, 0.02);
  --tab-bg: rgba(0, 0, 0, 0.15);
  --command-bg: rgba(0, 0, 0, 0.25);
  --command-border: rgba(255, 255, 255, 0.03);
  --command-text: #f8fafc;
  --terminal-header-bg: rgba(0, 0, 0, 0.2);
  --panel-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  --mockup-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
  --hero-gradient-start: #ffffff;
  --hero-gradient-end: #94a3b8;
  --button-primary-text: #03111d;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, SF Mono, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  color-scheme: dark;
}

:root[data-theme="light"] {
  --bg-color: #f8fafc;
  --panel-bg: #ffffff;
  --panel-hover: #f6f8fb;
  --border-color: #e5e7eb;
  --border-focus: #cbd5e1;
  --text-main: #111827;
  --text-muted: #475569;
  --text-dark: #64748b;
  --accent: #0570f8;
  --accent-hover: #005bd3;
  --accent-glow: rgba(5, 112, 248, 0.1);
  --header-bg: rgba(248, 250, 252, 0.82);
  --hover-fill: rgba(15, 23, 42, 0.04);
  --control-bg: rgba(15, 23, 42, 0.02);
  --tab-bg: rgba(15, 23, 42, 0.03);
  --command-bg: #0a0e17;
  --command-border: rgba(15, 23, 42, 0.08);
  --command-text: #f8fafc;
  --terminal-header-bg: rgba(15, 23, 42, 0.04);
  --panel-shadow: 0 16px 36px rgba(15, 23, 42, 0.08);
  --mockup-shadow: 0 14px 30px rgba(15, 23, 42, 0.08);
  --hero-gradient-start: #111827;
  --hero-gradient-end: #475569;
  --button-primary-text: #ffffff;
  color-scheme: light;
}

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

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

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-color);
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--border-focus);
}

/* App Layout */
.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 2rem;
  width: 100%;
}

/* Header */
header {
  border-bottom: 1px solid var(--border-color);
  background-color: var(--header-bg);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 4rem;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: var(--text-main);
  transition: var(--transition-fast);
}

.logo-wordmark {
  display: block;
  width: 8rem;
  height: auto;
}

:root[data-theme="light"] .logo-wordmark {
  filter: invert(1);
}

.logo:hover {
  opacity: 0.9;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

nav a {
  align-items: center;
  display: inline-flex;
  min-height: 2.25rem;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1;
  color: var(--text-muted);
  transition: var(--transition-fast);
}

nav a:hover, nav a.active {
  color: var(--text-main);
}

.github-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.github-link svg {
  display: block;
  width: 1rem;
  height: 1rem;
  flex: none;
}

.language-menu {
  position: relative;
  z-index: 150;
}

.language-trigger {
  align-items: center;
  background: var(--control-bg);
  border: 1px solid var(--border-color);
  border-radius: 999px;
  color: var(--text-muted);
  cursor: pointer;
  display: inline-flex;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  gap: 0.45rem;
  height: 2.25rem;
  justify-content: center;
  line-height: 1;
  min-width: 8.2rem;
  padding: 0 0.75rem;
  transition: var(--transition-fast);
}

.language-trigger:hover,
.language-trigger:focus-visible,
.language-menu.open .language-trigger {
  border-color: var(--border-focus);
  color: var(--text-main);
}

.language-icon,
.select-caret {
  flex: none;
}

.language-icon {
  height: 1.05rem;
  width: 1.05rem;
}

.select-caret {
  height: 0.85rem;
  transition: transform var(--transition-fast);
  width: 0.85rem;
}

.language-menu.open .select-caret {
  transform: rotate(180deg);
}

.language-options {
  background: color-mix(in srgb, var(--panel-bg) 96%, transparent);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  box-shadow: var(--panel-shadow);
  min-width: 10.5rem;
  padding: 0.35rem;
  position: absolute;
  right: 0;
  top: calc(100% + 0.5rem);
}

.language-options[hidden] {
  display: none;
}

.language-option {
  align-items: center;
  background: transparent;
  border: 0;
  border-radius: 10px;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  font: inherit;
  font-size: 0.92rem;
  gap: 0.55rem;
  min-height: 2.35rem;
  padding: 0 0.75rem;
  text-align: left;
  transition: background var(--transition-fast), color var(--transition-fast);
  width: 100%;
}

.language-option:hover,
.language-option:focus-visible {
  background: var(--hover-fill);
  outline: none;
}

.language-option[aria-checked="true"] {
  background: var(--accent-glow);
  color: var(--text-main);
}

.language-check {
  color: var(--accent);
  flex: none;
  font-weight: 800;
  opacity: 0;
  width: 1rem;
}

.language-option[aria-checked="true"] .language-check {
  opacity: 1;
}

.theme-toggle {
  align-items: center;
  background: transparent;
  border: 0;
  border-radius: 999px;
  color: var(--text-muted);
  cursor: pointer;
  display: inline-flex;
  height: 2.25rem;
  justify-content: center;
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
  width: 2.25rem;
}

.theme-toggle:hover {
  background: var(--hover-fill);
  color: var(--text-main);
  transform: rotate(8deg);
}

.theme-icon {
  height: 1.35rem;
  width: 1.35rem;
}

.theme-icon-sun,
:root[data-theme="light"] .theme-icon-moon {
  display: none;
}

:root[data-theme="light"] .theme-icon-sun {
  display: block;
}

/* Hero Section */
.hero {
  padding: 5rem 0 4rem;
  text-align: center;
}

.eyebrow {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0;
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(2.6rem, 5vw, 3.35rem);
  font-weight: 800;
  letter-spacing: 0;
  line-height: 1.1;
  margin: 0 auto 1.5rem;
  max-width: 760px;
  text-wrap: balance;
  background: linear-gradient(to bottom right, var(--hero-gradient-start) 40%, var(--hero-gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 650px;
  margin: 0 auto 3rem;
  font-weight: 400;
  overflow-wrap: anywhere;
}

.agent-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
  margin: -1.25rem auto 2rem;
  max-width: 760px;
}

.agent-strip span {
  border: 1px solid rgba(56, 189, 248, 0.22);
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.055);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.35rem 0.65rem;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 0.8rem;
  margin: 0 auto 2rem;
  flex-wrap: wrap;
}

.button {
  align-items: center;
  border-radius: 999px;
  display: inline-flex;
  font-weight: 700;
  gap: 0.5rem;
  min-height: 2.6rem;
  padding: 0.7rem 1rem;
  text-decoration: none;
  transition: var(--transition-fast);
}

.button-primary {
  background: var(--accent);
  color: var(--button-primary-text);
}

.button-primary:hover {
  background: var(--accent-hover);
}

.button-secondary {
  border: 1px solid var(--border-color);
  color: var(--text-main);
}

.button-secondary:hover {
  border-color: var(--border-focus);
  background: var(--hover-fill);
}

/* Install Widget */
.install-widget {
  width: 100%;
  max-width: 600px;
  min-width: 0;
  margin: 0 auto;
  background-color: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--panel-shadow);
  transition: border-color var(--transition-normal);
}

.install-widget:hover {
  border-color: var(--border-focus);
}

.widget-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-bottom: 1px solid var(--border-color);
  background-color: var(--tab-bg);
}

.tab-btn {
  min-width: 0;
  flex: 1;
  background: none;
  border: none;
  color: var(--text-muted);
  padding: 1rem;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
  border-bottom: 2px solid transparent;
}

.tab-btn:hover {
  color: var(--text-main);
  background-color: var(--hover-fill);
}

.tab-btn.active {
  color: var(--accent);
  background-color: var(--accent-glow);
  border-bottom-color: var(--accent);
}

.widget-content {
  padding: 1.5rem;
  position: relative;
  width: 100%;
}

.command-box {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  background-color: var(--command-bg);
  border: 1px solid var(--command-border);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  min-width: 0;
  width: 100%;
}

.command-text {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--command-text);
  white-space: nowrap;
  overflow-x: auto;
  flex: 1;
  min-width: 0;
  scrollbar-width: none; /* Firefox */
}

.command-text::-webkit-scrollbar {
  display: none; /* Safari and Chrome */
}

.copy-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  padding: 0.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
  flex-shrink: 0;
}

.command-box .copy-btn {
  color: #94a3b8;
}

.copy-btn:hover {
  color: var(--text-main);
  transform: scale(1.05);
}

.command-box .copy-btn:hover {
  color: #f8fafc;
}

.copy-btn svg {
  width: 1.25rem;
  height: 1.25rem;
}

.copy-feedback {
  position: absolute;
  right: 1.5rem;
  top: 0.5rem;
  font-size: 0.75rem;
  color: var(--accent);
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
  font-family: var(--font-mono);
}

.copy-feedback.show {
  opacity: 1;
}

/* Intro */
.intro-section {
  padding: 5rem 0;
  border-top: 1px solid var(--border-color);
}

.section-heading {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3rem;
}

.section-kicker {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
}

.section-heading h2,
.section-title {
  font-size: 1.85rem;
  font-weight: 750;
  line-height: 1.2;
  letter-spacing: 0;
}

.section-heading p:not(.section-kicker) {
  color: var(--text-muted);
  font-size: 1rem;
  margin-top: 0.9rem;
}

.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

.intro-list {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--border-color);
}

.intro-item {
  display: grid;
  grid-template-columns: 4rem 1fr;
  gap: 1.25rem;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--border-color);
  transition: border-color var(--transition-normal), transform var(--transition-normal);
}

.intro-item:hover {
  border-color: var(--border-focus);
  transform: translateX(4px);
}

.intro-index {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.7;
}

.intro-item h3 {
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 0.35rem;
}

.intro-item p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

/* Quick Start / CLI examples */
.showcase-section {
  padding: 5rem 0;
  border-top: 1px solid var(--border-color);
}

.showcase-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

@media (max-width: 900px) {
  .showcase-grid {
    grid-template-columns: 1fr;
  }
}

.terminal-mockup {
  background-color: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--mockup-shadow);
}

.terminal-header {
  background-color: var(--terminal-header-bg);
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.terminal-dots {
  display: flex;
  gap: 0.35rem;
}

.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.terminal-dot.red { background-color: #ef4444; }
.terminal-dot.yellow { background-color: #eab308; }
.terminal-dot.green { background-color: #22c55e; }

.terminal-title {
  font-size: 0.75rem;
  color: var(--text-dark);
  font-family: var(--font-mono);
}

.terminal-body {
  padding: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--text-muted);
  overflow-x: auto;
}

.terminal-prompt {
  color: var(--accent);
  user-select: none;
}

.terminal-command {
  color: var(--text-main);
  font-weight: 500;
}

.terminal-output {
  margin-top: 0.5rem;
  display: block;
}

.terminal-output.comment {
  color: var(--text-dark);
}

.terminal-output.system {
  color: var(--accent);
}

.terminal-output.success {
  color: #10b981;
}

/* FAQ */
.faq-section {
  padding: 5rem 0;
  border-top: 1px solid var(--border-color);
}

.faq-list {
  border-top: 1px solid var(--border-color);
}

.faq-list details {
  border-bottom: 1px solid var(--border-color);
  color: var(--text-muted);
  transition: border-color var(--transition-normal);
}

.faq-list details[open],
.faq-list details:hover {
  border-color: var(--border-focus);
}

.faq-list summary {
  align-items: center;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  font-size: 1rem;
  font-weight: 650;
  justify-content: space-between;
  line-height: 1.4;
  list-style: none;
  padding: 1.15rem 0;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  color: var(--accent);
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.1rem;
  margin-left: 1rem;
}

.faq-list details[open] summary::after {
  content: "-";
}

.faq-list p {
  max-width: 760px;
  padding: 0 0 1.2rem;
}

/* Footer */
footer {
  border-top: 1px solid var(--border-color);
  padding: 3rem 0;
  text-align: center;
  color: var(--text-dark);
  font-size: 0.85rem;
}

footer a {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition-fast);
}

footer a:hover {
  color: var(--text-main);
}

/* Responsive adjustments */
@media (max-width: 640px) {
  .hero {
    padding: 4rem 0 3rem;
  }
  .hero h1 {
    font-size: 1.8rem;
    margin-left: auto;
    margin-right: auto;
    max-width: 18rem;
    overflow-wrap: anywhere;
  }
  .hero p {
    font-size: 1rem;
    margin-bottom: 2rem;
    max-width: 17.75rem;
  }
  .nav-container {
    padding: 1rem;
    flex-direction: column;
    height: auto;
    gap: 0.75rem;
  }
  .logo-wordmark {
    width: 7.25rem;
  }
  nav {
    gap: 0.45rem 0.6rem;
    justify-content: center;
    width: 100%;
    flex-wrap: wrap;
  }
  nav a {
    font-size: 0.84rem;
    min-height: 1.9rem;
  }
  .language-trigger {
    font-size: 0.78rem;
    height: 1.9rem;
    min-width: 7.3rem;
    padding: 0 0.6rem;
  }
  .language-options {
    left: 50%;
    min-width: 9.4rem;
    right: auto;
    top: calc(100% + 0.4rem);
    transform: translateX(-50%);
  }
  .theme-toggle {
    height: 1.9rem;
    width: 1.9rem;
  }
  .theme-icon {
    height: 1.15rem;
    width: 1.15rem;
  }
  .container {
    padding: 0 1rem;
  }
  .container.nav-container {
    padding: 0.9rem 1rem 0.75rem;
  }
  .agent-strip {
    display: grid;
    grid-template-columns: repeat(2, max-content);
    justify-content: center;
    margin-top: -1rem;
    max-width: 18rem;
  }
  .agent-strip span:last-child {
    grid-column: 1 / -1;
    justify-self: center;
  }
  .button {
    width: 100%;
    justify-content: center;
  }
  .hero-actions {
    max-width: 18rem;
    width: 100%;
  }
  .install-widget {
    max-width: 100%;
    width: 18rem;
  }
  .widget-content {
    padding: 1rem;
  }
  .tab-btn {
    font-size: 0.78rem;
    line-height: 1.2;
    padding: 0.85rem 0.45rem;
    white-space: normal;
  }
  .command-box {
    padding: 0.75rem 1rem;
  }
  .command-text {
    font-size: 0.78rem;
  }
  .intro-section {
    padding: 3rem 0;
  }
  .intro-item {
    grid-template-columns: 2.4rem 1fr;
    gap: 0.75rem;
  }
  .showcase-section {
    padding: 3rem 0;
  }
  .faq-section {
    padding: 3rem 0;
  }
}