/* ============================================================================
   fdyno docs — "systems terminal" theme
   Display: Space Grotesk · Body: Hanken Grotesk · Mono: JetBrains Mono
   ========================================================================== */

@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&display=swap");

:root {
  --fd-accent: #b8ff36;
  --fd-accent-2: #54e6c4;
  --fd-accent-ink: #0a0c10;
  --fd-display: "Space Grotesk", "Hanken Grotesk", sans-serif;
}

/* ---- Dark (default) -------------------------------------------------------- */
[data-md-color-scheme="slate"] {
  --fd-bg: #090b10;
  --fd-bg-2: #0d1017;
  --fd-surface: #121620;
  --fd-surface-2: #171c28;
  --fd-border: #232a39;
  --fd-border-2: #313b4f;
  --fd-text: #e7ecf3;
  --fd-muted: #97a2b3;
  --fd-faint: #5f6b7e;

  --md-default-bg-color: var(--fd-bg);
  --md-default-fg-color: var(--fd-text);
  --md-default-fg-color--light: var(--fd-muted);
  --md-default-fg-color--lighter: var(--fd-faint);
  --md-primary-fg-color: var(--fd-bg);
  --md-primary-bg-color: var(--fd-text);
  --md-accent-fg-color: var(--fd-accent);
  --md-typeset-a-color: var(--fd-accent);
  --md-typeset-color: var(--fd-text);
  --md-code-bg-color: #0c1018;
  --md-code-fg-color: #d6deea;
  --md-footer-bg-color: #07090d;
  --md-footer-bg-color--dark: #07090d;
}

/* ---- Light ---------------------------------------------------------------- */
[data-md-color-scheme="default"] {
  --fd-bg: #ffffff;
  --fd-bg-2: #f6f8fb;
  --fd-surface: #ffffff;
  --fd-surface-2: #f3f6fa;
  --fd-border: #e4e9f0;
  --fd-border-2: #d2dae4;
  --fd-text: #0d1320;
  --fd-muted: #56627a;
  --fd-faint: #8893a6;
  --fd-link: #2f7a00;

  --md-default-bg-color: var(--fd-bg);
  --md-primary-fg-color: #0d1320;
  --md-primary-bg-color: #ffffff;
  --md-accent-fg-color: var(--fd-link);
  --md-typeset-a-color: var(--fd-link);
  --md-code-bg-color: #f4f7fb;
}

/* ---- Typography ----------------------------------------------------------- */
.md-typeset {
  font-feature-settings: "kern", "liga", "calt";
  letter-spacing: -0.003em;
}
.md-typeset h1,
.md-typeset h2,
.md-typeset h3,
.md-typeset h4,
.md-header__title {
  font-family: var(--fd-display);
  font-weight: 700;
  letter-spacing: -0.02em;
}
.md-typeset h1 {
  color: var(--fd-text);
  font-size: 2.1rem;
  line-height: 1.1;
}
.md-typeset h2 {
  margin-top: 2.4em;
  font-size: 1.5rem;
  padding-bottom: 0.3em;
  border-bottom: 1px solid var(--fd-border);
}
.md-typeset h2::before {
  content: "";
  display: inline-block;
  width: 0.62em;
  height: 0.62em;
  margin-right: 0.5em;
  border-radius: 2px;
  background: var(--fd-accent);
  transform: rotate(45deg) translateY(-0.04em);
}

/* ---- Header --------------------------------------------------------------- */
.md-header {
  background: color-mix(in srgb, var(--fd-bg) 86%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--fd-border);
  box-shadow: none;
}
.md-tabs {
  background: transparent;
  border-bottom: 1px solid var(--fd-border);
}
[data-md-color-scheme="slate"] .md-tabs__link--active,
[data-md-color-scheme="slate"] .md-tabs__link:hover {
  color: var(--fd-accent);
  opacity: 1;
}
.md-header__title {
  font-weight: 600;
}

/* ---- Links & inline code -------------------------------------------------- */
.md-typeset a {
  text-decoration-color: color-mix(in srgb, var(--md-typeset-a-color) 35%, transparent);
  text-underline-offset: 0.18em;
  transition: color 0.12s ease;
}
.md-typeset code {
  font-feature-settings: "kern";
  border: 1px solid var(--fd-border);
  border-radius: 5px;
  padding: 0.12em 0.38em;
  font-size: 0.84em;
}

/* ---- Code blocks ---------------------------------------------------------- */
.md-typeset pre > code {
  border: none;
  padding: 1em 1.15em;
}
.md-typeset .highlight {
  border: 1px solid var(--fd-border);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.02) inset;
}
.md-typeset .highlight > pre {
  margin: 0;
}

/* ---- Tables --------------------------------------------------------------- */
.md-typeset table:not([class]) {
  border: 1px solid var(--fd-border);
  border-radius: 10px;
  overflow: hidden;
  font-size: 0.8rem;
}
.md-typeset table:not([class]) th {
  background: var(--fd-surface-2);
  font-family: var(--fd-display);
  font-weight: 600;
  letter-spacing: -0.01em;
}
[data-md-color-scheme="slate"] .md-typeset table:not([class]) tr:hover {
  background: var(--fd-surface);
}

/* ---- Admonitions ---------------------------------------------------------- */
.md-typeset .admonition,
.md-typeset details {
  border-radius: 10px;
  border-width: 1px;
  border-left-width: 3px;
  font-size: 0.78rem;
}

/* ---- Buttons (CTA) -------------------------------------------------------- */
.md-typeset .btn,
.md-typeset .md-button {
  font-family: var(--fd-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  border-radius: 9px;
  border: 1px solid var(--fd-border-2);
  padding: 0.62em 1.15em;
  transition: transform 0.12s ease, box-shadow 0.18s ease, background 0.12s ease;
}
.md-typeset .btn--primary,
.md-typeset .md-button--primary {
  background: var(--fd-accent);
  color: var(--fd-accent-ink);
  border-color: var(--fd-accent);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--fd-accent) 60%, transparent);
}
.md-typeset .btn--primary:hover,
.md-typeset .md-button--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px -10px color-mix(in srgb, var(--fd-accent) 70%, transparent);
  background: var(--fd-accent);
  color: var(--fd-accent-ink);
}
.md-typeset .md-button:not(.md-button--primary):hover {
  transform: translateY(-2px);
  border-color: var(--fd-accent);
  color: var(--fd-accent);
}

/* ============================================================================
   HERO
   ========================================================================== */
.fd-hero {
  position: relative;
  margin: -1.2rem -0.8rem 2.5rem;
  padding: clamp(2.5rem, 6vw, 5rem) 0.8rem clamp(2rem, 4vw, 3.5rem);
  overflow: hidden;
  border-bottom: 1px solid var(--fd-border);
}
.fd-hero::before {
  /* dot grid */
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(
    circle at center,
    color-mix(in srgb, var(--fd-text) 8%, transparent) 1px,
    transparent 1.4px
  );
  background-size: 30px 30px;
  mask-image: radial-gradient(120% 80% at 50% 0%, #000 30%, transparent 78%);
  opacity: 0.55;
}
.fd-hero::after {
  /* accent glow */
  content: "";
  position: absolute;
  left: 50%;
  top: -30%;
  width: 70vw;
  height: 70vw;
  max-width: 900px;
  max-height: 900px;
  transform: translateX(-50%);
  background: radial-gradient(
    circle,
    color-mix(in srgb, var(--fd-accent) 16%, transparent) 0%,
    transparent 60%
  );
  pointer-events: none;
  filter: blur(8px);
}
.fd-hero__inner {
  position: relative;
  max-width: 50rem;
  margin: 0 auto;
  text-align: center;
}
.fd-eyebrow {
  display: inline-block;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--fd-accent);
  padding: 0.35em 0.8em;
  border: 1px solid color-mix(in srgb, var(--fd-accent) 35%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--fd-accent) 9%, transparent);
  margin-bottom: 1.4rem;
}
.fd-hero h1.fd-title {
  font-family: var(--fd-display);
  font-weight: 700;
  font-size: clamp(2.3rem, 6vw, 4rem);
  line-height: 1.02;
  letter-spacing: -0.035em;
  margin: 0 0 1rem;
}
.fd-title .grad {
  background: linear-gradient(100deg, var(--fd-accent) 10%, var(--fd-accent-2) 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.fd-lede {
  font-size: clamp(1rem, 2vw, 1.2rem);
  line-height: 1.5;
  color: var(--fd-muted);
  max-width: 38rem;
  margin: 0 auto 1.9rem;
}
.fd-cta {
  display: flex;
  gap: 0.7rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 2.6rem;
}

/* ---- Hero flow diagram (CSS, animated) ------------------------------------ */
.fd-flow {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
  max-width: 44rem;
  margin: 0 auto;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.78rem;
}
.fd-node {
  padding: 0.7em 1.1em;
  border: 1px solid var(--fd-border-2);
  border-radius: 10px;
  background: var(--fd-surface);
  color: var(--fd-text);
  white-space: nowrap;
}
.fd-node--brand {
  border-color: color-mix(in srgb, var(--fd-accent) 55%, transparent);
  color: var(--fd-accent);
  box-shadow: 0 0 24px -8px color-mix(in srgb, var(--fd-accent) 60%, transparent);
}
.fd-wire {
  position: relative;
  width: 46px;
  height: 2px;
  background: var(--fd-border-2);
  overflow: hidden;
}
.fd-wire::after {
  content: "";
  position: absolute;
  top: 0;
  left: -40%;
  width: 40%;
  height: 100%;
  background: linear-gradient(90deg, transparent, var(--fd-accent), transparent);
  animation: fd-travel 2.6s linear infinite;
}
.fd-wire--2::after {
  animation-delay: 0.5s;
}
.fd-txn {
  display: grid;
  gap: 0.3rem;
  padding: 0.75rem 0.8rem 0.7rem;
  border: 1px dashed var(--fd-border-2);
  border-radius: 12px;
  background: var(--fd-bg-2);
}
.fd-txn__label {
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fd-faint);
}
.fd-row {
  display: flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.32em 0.6em;
  border-radius: 7px;
  background: var(--fd-surface);
  color: var(--fd-muted);
}
.fd-row::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--fd-border-2);
  animation: fd-commit 2.6s ease-in-out infinite;
  animation-delay: var(--d, 1s);
}
@keyframes fd-travel {
  0% { left: -40%; }
  60%, 100% { left: 140%; }
}
@keyframes fd-commit {
  0%, 38% { background: var(--fd-border-2); box-shadow: none; }
  46%, 70% { background: var(--fd-accent); box-shadow: 0 0 10px var(--fd-accent); }
  100% { background: var(--fd-border-2); box-shadow: none; }
}

/* ============================================================================
   FEATURE GRID
   ========================================================================== */
.fd-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}
.fd-card {
  display: block;
  padding: 1.4rem 1.3rem;
  border: 1px solid var(--fd-border);
  border-radius: 14px;
  background: var(--fd-surface);
  color: var(--fd-text) !important;
  text-decoration: none !important;
  transition: transform 0.14s ease, border-color 0.14s ease, box-shadow 0.18s ease;
}
.fd-card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--fd-accent) 55%, transparent);
  box-shadow: 0 18px 40px -24px color-mix(in srgb, var(--fd-accent) 50%, transparent);
}
.fd-card__icon {
  font-size: 1.3rem;
  line-height: 1;
}
.fd-card__title {
  font-family: var(--fd-display);
  font-weight: 600;
  font-size: 1rem;
  margin: 0.7rem 0 0.35rem;
  letter-spacing: -0.01em;
}
.fd-card__title .arrow {
  color: var(--fd-accent);
  transition: transform 0.14s ease;
  display: inline-block;
}
.fd-card:hover .fd-card__title .arrow {
  transform: translateX(4px);
}
.fd-card__body {
  font-size: 0.82rem;
  color: var(--fd-muted);
  line-height: 1.5;
  margin: 0;
}

/* ---- Stat strip ----------------------------------------------------------- */
.fd-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(8rem, 1fr));
  gap: 1px;
  background: var(--fd-border);
  border: 1px solid var(--fd-border);
  border-radius: 14px;
  overflow: hidden;
  margin: 2rem 0;
}
.fd-stat {
  background: var(--fd-surface);
  padding: 1.2rem 1rem;
  text-align: center;
}
.fd-stat__num {
  font-family: var(--fd-display);
  font-weight: 700;
  font-size: 1.7rem;
  letter-spacing: -0.02em;
  color: var(--fd-accent);
}
.fd-stat__label {
  font-size: 0.72rem;
  color: var(--fd-muted);
  margin-top: 0.2rem;
}

/* ============================================================================
   MERMAID — recolor to brand
   ========================================================================== */
/* Mermaid keeps its own font for correct label width measurement; only the
   colors are themed below. */
[data-md-color-scheme="slate"] .mermaid .node rect,
[data-md-color-scheme="slate"] .mermaid .node polygon,
[data-md-color-scheme="slate"] .mermaid .cluster rect {
  fill: var(--fd-surface) !important;
  stroke: var(--fd-border-2) !important;
}
[data-md-color-scheme="slate"] .mermaid .node .label,
[data-md-color-scheme="slate"] .mermaid .nodeLabel,
[data-md-color-scheme="slate"] .mermaid .edgeLabel {
  color: var(--fd-text) !important;
  fill: var(--fd-text) !important;
}
[data-md-color-scheme="slate"] .mermaid .edgeLabel {
  background: var(--fd-bg) !important;
}
[data-md-color-scheme="slate"] .mermaid .flowchart-link,
[data-md-color-scheme="slate"] .mermaid .edgePath .path,
[data-md-color-scheme="slate"] .mermaid line {
  stroke: var(--fd-border-2) !important;
}
[data-md-color-scheme="slate"] .mermaid .marker {
  fill: var(--fd-border-2) !important;
  stroke: var(--fd-border-2) !important;
}
/* sequence diagrams */
[data-md-color-scheme="slate"] .mermaid .actor {
  fill: var(--fd-surface) !important;
  stroke: var(--fd-accent) !important;
}
[data-md-color-scheme="slate"] .mermaid text.actor > tspan {
  fill: var(--fd-text) !important;
}
[data-md-color-scheme="slate"] .mermaid .messageText,
[data-md-color-scheme="slate"] .mermaid .loopText {
  fill: var(--fd-muted) !important;
}
[data-md-color-scheme="slate"] .mermaid .messageLine0,
[data-md-color-scheme="slate"] .mermaid .messageLine1 {
  stroke: var(--fd-border-2) !important;
}

/* ============================================================================
   MOTION — reveal on load, respect reduced-motion
   ========================================================================== */
.fd-reveal {
  opacity: 0;
  transform: translateY(14px);
  animation: fd-up 0.6s cubic-bezier(0.2, 0.7, 0.2, 1) forwards;
}
.fd-reveal:nth-child(2) { animation-delay: 0.06s; }
.fd-reveal:nth-child(3) { animation-delay: 0.12s; }
.fd-reveal:nth-child(4) { animation-delay: 0.18s; }
.fd-reveal:nth-child(5) { animation-delay: 0.24s; }
@keyframes fd-up {
  to { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  .fd-reveal { opacity: 1; transform: none; animation: none; }
  .fd-wire::after,
  .fd-row::before { animation: none; }
  .fd-row::before { background: var(--fd-accent); }
  [data-fd-reveal] { opacity: 1 !important; transform: none !important; }
}

/* header elevation on scroll */
.md-header.fd-scrolled {
  box-shadow: 0 1px 0 var(--fd-border), 0 8px 30px -16px rgba(0, 0, 0, 0.55);
}

/* scroll-reveal (home sections only) */
[data-fd-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.2, 0.7, 0.2, 1);
}
[data-fd-reveal].fd-in {
  opacity: 1;
  transform: none;
}

/* ---- small screens -------------------------------------------------------- */
@media (max-width: 44rem) {
  .fd-flow { font-size: 0.7rem; gap: 0.2rem; }
  .fd-wire { width: 24px; }
}

/* ============================================================================
   LIGHT THEME — refinements
   Bright lime glows on black but washes out on white, so on the light scheme
   text and marks use a deeper green; bright lime is reserved for solid fills.
   ========================================================================== */
[data-md-color-scheme="default"] {
  --fd-bg: #fcfcfb;
  --fd-bg-2: #f4f7f1;
  --fd-surface: #ffffff;
  --fd-surface-2: #f3f6f0;
  --fd-text-accent: #3f8c00;
}

/* diagram pulses, dots and the brand node read on white */
[data-md-color-scheme="default"] .fd-flow {
  --fd-accent: #5aa600;
}
[data-md-color-scheme="default"] .fd-node--brand {
  color: #2f6a00;
}

/* section markers, card arrows, stat numbers */
[data-md-color-scheme="default"] .md-typeset h2::before {
  background: #3f8c00;
}
[data-md-color-scheme="default"] .fd-card__title .arrow,
[data-md-color-scheme="default"] .fd-stat__num {
  color: #3f8c00;
}

/* eyebrow chip */
[data-md-color-scheme="default"] .fd-eyebrow {
  color: #2f6a00;
  border-color: rgba(63, 140, 0, 0.32);
  background: rgba(63, 140, 0, 0.07);
}

/* headline gradient: deep green -> teal (both legible on white) */
[data-md-color-scheme="default"] .fd-title .grad {
  background-image: linear-gradient(100deg, #3f8c00 6%, #0c8f80 94%);
}

/* a far subtler, cooler hero glow */
[data-md-color-scheme="default"] .fd-hero::after {
  background: radial-gradient(circle, rgba(86, 150, 0, 0.09) 0%, transparent 62%);
  opacity: 0.7;
}

/* cards lift toward green, not acid lime */
[data-md-color-scheme="default"] .fd-card:hover {
  border-color: rgba(63, 140, 0, 0.42);
  box-shadow: 0 16px 36px -26px rgba(63, 140, 0, 0.4);
}

/* primary CTA: a deeper, more saturated lime so it isn't acid on white */
[data-md-color-scheme="default"] .md-typeset .btn--primary,
[data-md-color-scheme="default"] .md-typeset .md-button--primary {
  background: #7ec900;
  border-color: #7ec900;
  color: #0a0c10;
}
[data-md-color-scheme="default"] .md-typeset .btn--primary:hover,
[data-md-color-scheme="default"] .md-typeset .md-button--primary:hover {
  background: #76bd00;
  box-shadow: 0 10px 30px -12px rgba(126, 201, 0, 0.5);
}
[data-md-color-scheme="default"] .md-typeset .md-button:not(.md-button--primary):hover {
  border-color: #3f8c00;
  color: #2f6a00;
}

/* mermaid on light: green strokes, white nodes */
[data-md-color-scheme="default"] .mermaid .node rect,
[data-md-color-scheme="default"] .mermaid .node polygon,
[data-md-color-scheme="default"] .mermaid .cluster rect {
  fill: #ffffff !important;
  stroke: #cfe0c0 !important;
}
[data-md-color-scheme="default"] .mermaid .actor {
  stroke: #3f8c00 !important;
  fill: #ffffff !important;
}