/* fetchx402 public site — company Protocol Console system
   Shared with Fetch402 (docs/DESIGN.md). Product copy differs; visual system does not. */

:root {
  --font-display: "Space Grotesk", ui-sans-serif, system-ui, sans-serif;
  --font-sans: "Manrope", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --color-base-100: #f7f7fb;
  --color-base-200: #eeedf4;
  --color-base-300: #d7d4df;
  --color-base-content: #111016;
  --color-primary: #6f3cff;
  --color-primary-content: #ffffff;
  --color-accent: #0fc995;
  --color-success: #089c72;
  --color-warning: #b56b00;
  --color-error: #d73458;

  --f402-purple: #6f3cff;
  --f402-mint: #0fc995;
  --f402-ink: #111016;
  --f402-line: color-mix(in srgb, var(--color-base-content) 16%, transparent);
  --f402-muted: color-mix(in srgb, var(--color-base-content) 60%, transparent);
  --f402-terminal-bg: #0b0910;
  --f402-terminal-fg: #f7f6fb;
  --f402-terminal-mint: #62f6c7;
  --max: 1440px;
  color-scheme: light;
}

html[data-theme="dark"] {
  --color-base-100: #09080d;
  --color-base-200: #100f16;
  --color-base-300: #292633;
  --color-base-content: #f4f2f8;
  --color-primary: #9b7bff;
  --color-primary-content: #09080d;
  --color-accent: #62f6c7;
  --color-success: #62f6c7;
  --color-warning: #ffcb6b;
  --color-error: #ff6b87;

  --f402-purple: #9b7bff;
  --f402-mint: #62f6c7;
  --f402-ink: #f4f2f8;
  --f402-line: color-mix(in srgb, var(--color-base-content) 16%, transparent);
  --f402-muted: color-mix(in srgb, var(--color-base-content) 60%, transparent);
  --f402-terminal-bg: #06050a;
  --f402-terminal-fg: #f7f6fb;
  --f402-terminal-mint: #62f6c7;
  color-scheme: dark;
}

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

html {
  min-width: 320px;
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  font-feature-settings: "ss01" 1, "tnum" 1;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--color-base-content);
  background:
    linear-gradient(var(--f402-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--f402-line) 1px, transparent 1px),
    var(--color-base-100);
  background-size: 64px 64px;
  background-position: -1px -1px;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  pointer-events: none;
  background:
    radial-gradient(
      circle at 74% 4%,
      color-mix(in srgb, var(--color-primary) 18%, transparent),
      transparent 32rem
    ),
    linear-gradient(
      to bottom,
      color-mix(in srgb, var(--color-base-100) 20%, transparent),
      var(--color-base-100) 72%
    );
}

a,
button {
  outline-color: var(--color-primary);
  outline-offset: 3px;
}

code,
pre,
.font-mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.shell {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

@media (min-width: 640px) {
  .shell {
    width: min(100% - 3rem, var(--max));
  }
}

@media (min-width: 1024px) {
  .shell {
    width: min(100% - 5rem, var(--max));
  }
}

/* Header */

.f402-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--f402-line);
  background: color-mix(in srgb, var(--color-base-100) 88%, transparent);
  backdrop-filter: blur(16px) saturate(140%);
}

.f402-header::after {
  position: absolute;
  right: 0;
  bottom: -1px;
  width: min(30vw, 25rem);
  height: 1px;
  content: "";
  background: linear-gradient(90deg, transparent, var(--color-primary));
}

.f402-header-row {
  display: flex;
  height: 4rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.f402-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.045em;
  color: var(--color-base-content);
  text-decoration: none;
}

.f402-brand .accent {
  color: var(--color-primary);
}

.f402-brand-mark {
  display: inline-grid;
  width: 1.55rem;
  height: 1.55rem;
  place-items: center;
  color: white;
  background: var(--color-primary);
  clip-path: polygon(0 0, 76% 0, 100% 24%, 100% 100%, 24% 100%, 0 76%);
}

.f402-brand-mark::before {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  font-weight: 700;
  content: "FX";
}

.f402-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.75rem;
  font-size: 0.75rem;
}

.f402-nav-link {
  position: relative;
  color: var(--f402-muted);
  text-decoration: none;
  transition: color 140ms ease;
}

.f402-nav-link::after {
  position: absolute;
  right: 0;
  bottom: -0.5rem;
  left: 0;
  height: 1px;
  content: "";
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 140ms ease;
}

.f402-nav-link:hover {
  color: var(--color-base-content);
}

.f402-nav-link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

html[data-theme="dark"] .f402-header .f402-nav-link {
  color: rgba(244, 242, 248, 0.64);
}

html[data-theme="dark"] .f402-header .f402-nav-link:hover {
  color: #ffffff;
}

/* Theme toggle */

.f402-theme-toggle {
  display: inline-flex;
  border: 1px solid var(--f402-line);
}

.f402-theme-toggle button {
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border: 0;
  color: var(--f402-muted);
  background: transparent;
  cursor: pointer;
}

.f402-theme-toggle button + button {
  border-left: 1px solid var(--f402-line);
}

html[data-theme="light"] .f402-theme-toggle [data-phx-theme="light"],
html[data-theme="dark"] .f402-theme-toggle [data-phx-theme="dark"] {
  color: var(--color-primary-content);
  background: var(--color-primary);
}

/* Hero */

.f402-eyebrow {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.f402-eyebrow::before {
  width: 1.5rem;
  height: 1px;
  content: "";
  background: currentColor;
}

.f402-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(18rem, 0.9fr);
  min-height: 34rem;
  overflow: hidden;
  border: 1px solid var(--f402-line);
  background: color-mix(in srgb, var(--color-base-100) 86%, transparent);
}

.f402-hero-copy {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(2rem, 6vw, 5.5rem);
}

.f402-hero-wordmark {
  margin: 1.25rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(3.4rem, 9vw, 7.5rem);
  font-weight: 700;
  line-height: 0.82;
  letter-spacing: -0.085em;
}

.f402-hero-wordmark span {
  color: var(--color-primary);
}

.f402-hero-claim {
  max-width: 42rem;
  margin: 2rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.2vw, 2.85rem);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.05em;
}

.f402-hero-lede {
  max-width: 37rem;
  margin: 1.25rem 0 0;
  color: var(--f402-muted);
  font-size: clamp(0.95rem, 1.5vw, 1.08rem);
  line-height: 1.75;
}

.f402-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.f402-button {
  display: inline-flex;
  min-height: 2.9rem;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 0 1.1rem;
  border: 1px solid var(--f402-line);
  border-radius: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
  text-transform: uppercase;
  color: var(--color-base-content);
  background: color-mix(in srgb, var(--color-base-100) 86%, transparent);
  transition:
    color 140ms ease,
    border-color 140ms ease,
    background 140ms ease,
    transform 140ms ease;
}

.f402-button:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.f402-button-primary {
  border-color: var(--color-primary);
  color: white;
  background: var(--color-primary);
}

.f402-button-primary:hover {
  color: var(--color-primary-content);
  background: color-mix(in srgb, var(--color-primary) 84%, black);
}

/* Terminal */

.f402-terminal {
  position: relative;
  display: flex;
  min-height: 100%;
  flex-direction: column;
  padding: clamp(1.5rem, 4vw, 3rem);
  color: var(--f402-terminal-fg);
  background:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    var(--f402-terminal-bg);
  background-size: 28px 28px;
}

.f402-terminal::before {
  position: absolute;
  inset: 0;
  content: "";
  pointer-events: none;
  background: linear-gradient(
    135deg,
    transparent 58%,
    color-mix(in srgb, var(--f402-purple) 26%, transparent)
  );
}

.f402-terminal-top {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.58);
}

.f402-live {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--f402-terminal-mint);
}

.f402-live::before {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 999px;
  content: "";
  background: currentColor;
  box-shadow:
    0 0 0 4px rgba(98, 246, 199, 0.1),
    0 0 1.5rem rgba(98, 246, 199, 0.75);
}

.f402-terminal-metric {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 1rem;
  padding: 1.35rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.f402-terminal-label {
  font-family: var(--font-mono);
  font-size: 0.63rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.48);
}

.f402-terminal-sub {
  margin-top: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.4);
}

.f402-terminal-value {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.5vw, 2.75rem);
  font-weight: 600;
  line-height: 0.85;
  letter-spacing: -0.06em;
}

.f402-terminal-value.is-signal {
  color: var(--f402-terminal-mint);
}

.f402-terminal-pipeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: auto;
  padding-top: 2rem;
}

.f402-terminal-step {
  position: relative;
  padding-top: 1.2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.52);
}

.f402-terminal-step::before {
  position: absolute;
  top: -0.28rem;
  left: 0;
  width: 0.5rem;
  height: 0.5rem;
  border: 1px solid rgba(255, 255, 255, 0.5);
  content: "";
  background: var(--f402-terminal-bg);
}

.f402-terminal-step.is-active {
  color: var(--f402-terminal-mint);
}

.f402-terminal-step.is-active::before {
  border-color: var(--f402-terminal-mint);
  background: var(--f402-terminal-mint);
  box-shadow: 0 0 1rem rgba(98, 246, 199, 0.6);
}

/* Sections */

.f402-section {
  padding: clamp(3rem, 7vw, 6.5rem) 0;
}

.f402-section + .f402-section {
  border-top: 1px solid var(--f402-line);
}

.f402-section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2rem;
}

.f402-section-title {
  margin: 0.45rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 4.25rem);
  font-weight: 550;
  line-height: 0.95;
  letter-spacing: -0.06em;
}

.f402-section-note {
  max-width: 27rem;
  margin: 0;
  color: var(--f402-muted);
  font-size: 0.82rem;
  line-height: 1.65;
  text-align: right;
}

/* Tool rails */

.f402-tool-rail {
  border-top: 1px solid var(--f402-line);
  border-left: 1px solid var(--f402-line);
}

.f402-tool {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(12rem, 0.8fr);
  gap: 1.5rem;
  min-height: 8.5rem;
  padding: 1.4rem;
  border-right: 1px solid var(--f402-line);
  border-bottom: 1px solid var(--f402-line);
  background: color-mix(in srgb, var(--color-base-100) 88%, transparent);
}

.f402-tool.is-soon {
  opacity: 0.72;
}

.f402-tool-index {
  display: block;
  margin-bottom: 1.1rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--color-primary);
}

.f402-tool h3 {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 600;
  letter-spacing: -0.04em;
}

.f402-tool p {
  margin: 0;
  max-width: 36rem;
  color: var(--f402-muted);
  font-size: 0.88rem;
  line-height: 1.65;
}

.f402-tool-side {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: center;
  gap: 0.55rem;
  text-align: right;
}

.f402-price {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.85rem;
  font-weight: 600;
  letter-spacing: -0.05em;
  line-height: 1;
}

.f402-price span {
  color: var(--color-primary);
}

.f402-price.is-soon {
  color: var(--f402-muted);
  font-size: 0.95rem;
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.f402-path {
  font-size: 0.68rem;
  color: var(--f402-muted);
}

/* Payment stages */

.f402-stage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--f402-line);
  border: 1px solid var(--f402-line);
}

.f402-stage {
  position: relative;
  min-height: 16rem;
  padding: 1.4rem;
  overflow: hidden;
  background: var(--color-base-100);
}

.f402-stage::after {
  position: absolute;
  right: -1.2rem;
  bottom: -1.8rem;
  font-family: var(--font-display);
  font-size: 7rem;
  font-weight: 700;
  line-height: 1;
  color: color-mix(in srgb, var(--color-primary) 7%, transparent);
  content: attr(data-index);
}

.f402-stage-kicker {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.f402-stage h3 {
  position: relative;
  z-index: 1;
  max-width: 12rem;
  margin: 3rem 0 0.75rem;
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 550;
  line-height: 1;
  letter-spacing: -0.045em;
}

.f402-stage p {
  position: relative;
  z-index: 1;
  max-width: 16rem;
  margin: 0;
  color: var(--f402-muted);
  font-size: 0.82rem;
  line-height: 1.65;
}

.f402-stage code {
  font-size: 0.78em;
}

/* Trust strip */

.f402-stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--f402-line);
  border-left: 1px solid var(--f402-line);
}

.f402-stat {
  min-height: 10rem;
  padding: 1.4rem;
  border-right: 1px solid var(--f402-line);
  border-bottom: 1px solid var(--f402-line);
  background: color-mix(in srgb, var(--color-base-100) 88%, transparent);
}

.f402-stat-index {
  display: block;
  margin-bottom: 2rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--color-primary);
}

.f402-stat-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--f402-muted);
}

.f402-stat-value {
  margin-top: 0.55rem;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.5vw, 2rem);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.045em;
}

.f402-api-base {
  margin: 2rem 0 0;
  color: var(--f402-muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}

.f402-api-base a {
  color: var(--color-primary);
  text-decoration: none;
}

.f402-api-base a:hover {
  text-decoration: underline;
  text-underline-offset: 0.25rem;
}

/* Footer */

.f402-footer {
  border-top: 1px solid var(--f402-line);
  padding: 2rem 0 2.5rem;
  background: color-mix(in srgb, var(--color-base-200) 70%, transparent);
}

.f402-footer-row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
}

.f402-footer-note {
  margin: 0.75rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--color-base-content) 50%, transparent);
}

.f402-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-size: 0.75rem;
}

@media (max-width: 960px) {
  .f402-hero,
  .f402-stage-grid,
  .f402-stat-grid,
  .f402-tool {
    grid-template-columns: 1fr;
  }

  .f402-section-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .f402-section-note {
    text-align: left;
  }

  .f402-tool-side {
    align-items: flex-start;
    text-align: left;
  }

  .f402-terminal-pipeline {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
}

@media (max-width: 640px) {
  .f402-nav {
    gap: 0.85rem;
    font-size: 0.7rem;
  }

  .f402-hero-wordmark {
    font-size: clamp(2.8rem, 14vw, 4rem);
  }
}

/* --- x402 browser paywall --- */

.f402-paywall-body {
  min-height: 100vh;
}

.f402-paywall {
  width: min(720px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

.f402-paywall-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2rem;
}

.f402-paywall-card {
  border: 1px solid var(--f402-line);
  background: color-mix(in srgb, var(--color-base-200) 88%, transparent);
  padding: 1.75rem 1.5rem 1.5rem;
}

.f402-paywall-title {
  margin: 0.35rem 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 600;
  letter-spacing: -0.05em;
  line-height: 1.05;
}

.f402-paywall-title .accent,
.f402-brand .accent {
  color: var(--color-primary);
}

.f402-paywall-lead {
  margin: 0 0 1.5rem;
  color: var(--f402-muted);
  line-height: 1.5;
}

.f402-paywall-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem 1.25rem;
  margin: 0 0 1.5rem;
}

.f402-paywall-meta .wide {
  grid-column: 1 / -1;
}

.f402-paywall-meta dt {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--f402-muted);
}

.f402-paywall-meta dd {
  margin: 0.2rem 0 0;
  font-size: 0.95rem;
}

.f402-paywall-meta dd.mono {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  word-break: break-all;
}

.f402-paywall-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.f402-paywall-status {
  margin: 0;
  color: var(--f402-muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.f402-paywall-tx {
  color: var(--color-primary);
}

.f402-paywall-output {
  margin: 1rem 0 0;
  padding: 1rem;
  overflow: auto;
  max-height: 28rem;
  border: 1px solid var(--f402-line);
  background: var(--f402-terminal-bg);
  color: var(--f402-terminal-fg);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.45;
}

.f402-paywall-note {
  margin-top: 1.5rem;
  color: var(--f402-muted);
  font-size: 0.82rem;
  line-height: 1.5;
}

.f402-paywall-note code {
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.f402-paywall-note a {
  color: var(--color-primary);
}

@media (max-width: 640px) {
  .f402-paywall-meta {
    grid-template-columns: 1fr;
  }

  .f402-paywall-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .f402-button,
  .f402-nav-link::after {
    transition: none;
  }
}