/* Ask a Human Landing — DM Sans + JetBrains Mono, teal/amber palette */

:root {
  --bg: #0d1117;
  --bg-alt: #161b22;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --accent: #39d353;
  --accent-light: #56d364;
  --amber: #f0883e;
  --border: #30363d;
  --radius: 12px;
  --radius-sm: 8px;
}

* {
  box-sizing: border-box;
}

body {
  font-family: 'DM Sans', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  margin: 0;
  min-height: 100vh;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text);
  text-decoration: none;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

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

.nav a.btn-primary {
  color: var(--bg);
}

.nav a.btn-primary:hover {
  color: var(--bg);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg);
}

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

.btn-lg {
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
}

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

.hero-image {
  max-width: 100%;
  width: 520px;
  height: auto;
  margin: 0 auto 2rem;
  display: block;
  border-radius: var(--radius);
}

.hero-badge {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  background: rgba(57, 211, 83, 0.15);
  color: var(--accent);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 1rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero-title em {
  color: var(--accent);
  font-style: normal;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 2rem;
}

.hero-prompt {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin: 2rem auto;
  max-width: 600px;
  text-align: left;
}

.hero-prompt code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  color: var(--amber);
  line-height: 1.5;
}

.hero-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.hero-cost {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Sections */
.section {
  padding: 4rem 0;
}

.section-alt {
  background: var(--bg-alt);
}

.concept-image {
  max-width: 100%;
  width: 560px;
  height: auto;
  margin: 0 auto 2.5rem;
  display: block;
  border-radius: var(--radius);
}

.participant-image {
  max-width: 100%;
  width: 420px;
  height: auto;
  margin: 0 auto 2rem;
  display: block;
  border-radius: var(--radius);
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
  text-align: center;
}

.section-lead {
  text-align: center;
  color: var(--text-muted);
  margin: 0 0 2.5rem;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 2.5rem;
}

/* Two col */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

@media (max-width: 700px) {
  .two-col {
    grid-template-columns: 1fr;
  }
}

.two-col h2 {
  font-size: 1.35rem;
  margin: 0 0 1rem;
  color: var(--accent);
}

.two-col p, .two-col .lead {
  margin: 0 0 1rem;
  color: var(--text-muted);
}

.lead {
  font-size: 1.05rem;
}

.checklist {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
}

.checklist li {
  padding: 0.35rem 0;
  padding-left: 1.5rem;
  position: relative;
}

.checklist-x li::before {
  content: '×';
  position: absolute;
  left: 0;
  color: var(--amber);
  font-weight: bold;
}

.numbered-list {
  counter-reset: num;
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
}

.numbered-list li {
  counter-increment: num;
  padding: 0.35rem 0;
  padding-left: 2rem;
  position: relative;
}

.numbered-list li::before {
  content: counter(num);
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 600;
}

/* Prolific cards */
.prolific-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin: 2rem 0;
}

@media (max-width: 600px) {
  .prolific-grid {
    grid-template-columns: 1fr;
  }
}

.prolific-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
}

.prolific-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 1rem;
  color: var(--accent);
}

.prolific-icon svg {
  width: 100%;
  height: 100%;
}

.prolific-card h3 {
  font-size: 1rem;
  margin: 0 0 0.5rem;
}

.prolific-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0;
}

.prolific-tagline {
  text-align: center;
  font-size: 1.1rem;
  margin: 2rem 0 0;
  color: var(--text-muted);
}

/* Pricing chart */
.pricing-chart {
  display: flex;
  gap: 1.5rem;
  align-items: flex-end;
  justify-content: center;
  margin: 2rem 0;
  min-height: 160px;
}

.pricing-bar-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
  max-width: 100px;
}

.pricing-bar {
  width: 100%;
  height: calc(var(--width) * 1.4);
  min-height: 50px;
  background: linear-gradient(180deg, var(--accent) 0%, rgba(57, 211, 83, 0.5) 100%);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 0.5rem;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--bg);
}

.pricing-label {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.pricing-tagline {
  text-align: center;
  color: var(--text-muted);
  margin: 2rem 0 0;
}

/* Example / Results */
.example-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 2rem;
  margin: 2rem 0;
}

@media (max-width: 600px) {
  .example-grid {
    grid-template-columns: 1fr;
  }
}

.example-study {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.example-study h3,
.example-results h3 {
  font-size: 1rem;
  margin: 0 0 1rem;
  color: var(--accent);
}

.example-study ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.example-study li {
  padding: 0.35rem 0;
  color: var(--text-muted);
}

.results-chart {
  display: flex;
  gap: 1rem;
  align-items: flex-end;
  margin: 0 0 1rem;
}

.chart-bar-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
}

.chart-bar {
  width: 100%;
  min-height: 24px;
  height: calc(var(--pct) * 1.2px);
  max-height: 90px;
  background: linear-gradient(180deg, var(--accent) 0%, rgba(57, 211, 83, 0.6) 100%);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--bg);
}

.chart-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.chart-caption {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0 0 0.5rem;
}

.results-list p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0.5rem 0;
}

.insights-box {
  background: rgba(57, 211, 83, 0.08);
  border: 1px solid rgba(57, 211, 83, 0.2);
  border-radius: var(--radius);
  padding: 1.5rem 2rem;
  margin-top: 2rem;
}

.insights-tagline {
  font-weight: 600;
  margin: 0 0 0.75rem;
  color: var(--accent);
}

.insights-box ul {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--text-muted);
}

/* Flow diagram */
.flow-diagram {
  margin: 2rem 0;
  padding: 1rem;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.flow-svg {
  width: 100%;
  max-width: 360px;
  height: auto;
  margin: 0 auto;
  display: block;
}

.flow-svg .flow-box {
  fill: var(--bg-alt);
  stroke: var(--border);
  stroke-width: 1;
}

.flow-svg .flow-highlight {
  fill: rgba(57, 211, 83, 0.2);
  stroke: var(--accent);
}

.flow-svg .flow-result {
  fill: var(--accent);
}

.flow-svg text {
  fill: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: 12px;
  text-anchor: middle;
  dominant-baseline: middle;
}

.flow-svg .flow-result text {
  fill: var(--bg);
  font-size: 11px;
}

.flow-caption {
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 1rem 0 0;
}

/* Prompts grid */
.prompts-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

@media (max-width: 600px) {
  .prompts-grid {
    grid-template-columns: 1fr;
  }
}

.prompt-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.prompt-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.prompt-card blockquote {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text-muted);
  border-left: 3px solid var(--accent);
  padding-left: 1rem;
}

/* Is / Isn't */
.is-isnt-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 2rem 0;
}

@media (max-width: 600px) {
  .is-isnt-grid {
    grid-template-columns: 1fr;
  }
}

.is-box {
  border-radius: var(--radius);
  padding: 1.5rem;
}

.is-yes {
  background: rgba(57, 211, 83, 0.1);
  border: 1px solid rgba(57, 211, 83, 0.3);
}

.is-no {
  background: rgba(240, 136, 62, 0.08);
  border: 1px solid rgba(240, 136, 62, 0.25);
}

.is-box h3 {
  font-size: 1rem;
  margin: 0 0 0.75rem;
}

.is-yes h3 {
  color: var(--accent);
}

.is-no h3 {
  color: var(--amber);
}

.is-box ul {
  margin: 0;
  padding-left: 1.25rem;
  font-size: 0.95rem;
}

.is-yes ul {
  color: var(--text-muted);
}

.is-no ul {
  color: var(--text-muted);
}

.is-tagline {
  text-align: center;
  color: var(--text-muted);
  margin: 2rem 0 0;
}

/* MCP Config Generator */
.config-generator {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  margin-top: 1rem;
}

.config-inputs {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.config-inputs .label-text {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
}

.config-inputs label {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.config-inputs .label-text,
.config-inputs .link-get-key {
  display: inline;
}

.config-inputs .link-get-key {
  margin-left: 0.5rem;
}

.link-get-key {
  font-size: 0.85rem;
  color: var(--accent);
  text-decoration: none;
}

.link-get-key:hover {
  text-decoration: underline;
}

.config-inputs input {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  padding: 0.6rem 0.75rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
}

.config-inputs input::placeholder {
  color: var(--text-muted);
  opacity: 0.7;
}

.config-output {
  margin-top: 1rem;
}

.config-hint {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0 0 0.75rem;
}

.config-json {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--text-muted);
  overflow-x: auto;
  white-space: pre;
  margin: 0 0 0.75rem;
  max-height: 200px;
  overflow-y: auto;
}

.btn-copy {
  background: var(--border);
  color: var(--text);
}

.btn-copy:hover {
  background: var(--text-muted);
}

/* CTA */
.cta-section {
  padding: 5rem 0;
  text-align: center;
  background: linear-gradient(180deg, var(--bg-alt) 0%, var(--bg) 100%);
}

.cta-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  margin: 0 0 0.75rem;
  line-height: 1.3;
}

.cta-subtitle {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin: 0 0 2rem;
}

.cta-benefits {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
  display: inline-block;
  text-align: left;
}

.cta-benefits li {
  padding: 0.35rem 0;
  color: var(--text-muted);
}

.cta-benefits li::before {
  content: '✓ ';
  color: var(--accent);
  font-weight: bold;
}

.cta-tagline {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 0 0 1.5rem;
  color: var(--accent);
}

/* FAQ */
.faq-list {
  max-width: 700px;
  margin: 0 auto;
}

.faq-item {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-item h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 0.75rem;
  color: var(--text);
}

.faq-item p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-item a {
  color: var(--accent);
  text-decoration: none;
}

.faq-item a:hover {
  text-decoration: underline;
}

/* Footer */
.footer {
  padding: 2rem;
  text-align: center;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.9rem;
}