@charset "UTF-8";
/* Abstracts */
/* ─── Geist Design System tokens ────────────────────────────────────────────── */
:root {
  /* Surfaces */
  --color-canvas: #ffffff; /* page / dialog background */
  --color-canvas-soft: #fafafa; /* section / card background */
  --color-canvas-soft-2: #f2f2f2; /* inset / code editor background */
  --color-primary: #000000;
  --color-on-primary: #ffffff;
  /* Text — Geist gray scale */
  --color-ink: #000000; /* headings / high-emphasis */
  --color-body: #666666; /* body copy */
  --color-mute: #a1a1a1; /* placeholder / disabled */
  /* Borders */
  --color-hairline: #eaeaea; /* subtle separator */
  --color-hairline-strong: #c9c9c9; /* visible border */
  /* Semantic */
  --color-link: #0070f3;
  --color-error: #e00;
  --color-warning: #f5a623;
  --color-warning-soft: #ffefcf;
  /* Typography — Geist */
  --font-sans: "Geist", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "Geist Mono", "SFMono-Regular", Consolas, monospace;
  /*  Spacing (4 px base)  */
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 40px;
  --space-3xl: 48px;
  --space-4xl: 64px;
  --space-5xl: 96px;
  /*  Border radius  */
  --rounded-xs: 4px;
  --rounded-sm: 6px; /* nav buttons, inputs */
  --rounded-md: 8px; /* feature cards */
  --rounded-lg: 12px; /* pricing cards, larger chrome */
  --rounded-xl: 16px;
  --rounded-pill: 100px; /* marketing CTA */
  --rounded-full: 9999px;
  /*  Elevation (stacked shadows + inset hairline)  */
  --shadow-1: inset 0 0 0 1px #00000014;
  --shadow-2:
    0px 1px 1px #00000005, 0px 2px 2px #0000000a, inset 0 0 0 1px #00000014;
  --shadow-3:
    0px 2px 2px #0000000a, 0px 8px 8px -8px #0000000a, inset 0 0 0 1px #00000014;
  --shadow-4:
    0px 2px 2px #0000000a, 0px 8px 16px -4px #0000000a,
    inset 0 0 0 1px #00000014;
}

/* Geist dark */
/* Geist light */
@media (prefers-color-scheme: dark) {
  :root {
    --color-canvas: #000000;
    --color-canvas-soft: #111111;
    --color-canvas-soft-2: #1a1a1a;
    --color-primary: #ffffff;
    --color-on-primary: #000000;
    --color-ink: #ededed;
    --color-body: #a1a1a1;
    --color-mute: #444444;
    --color-hairline: #2e2e2e;
    --color-hairline-strong: #454545;
    --shadow-1: inset 0 0 0 1px rgba(255,255,255,0.08);
    --shadow-2: 0px 1px 1px rgba(0,0,0,0.4), 0px 2px 2px rgba(0,0,0,0.25),
                inset 0 0 0 1px rgba(255,255,255,0.08);
    --shadow-3: 0px 2px 2px rgba(0,0,0,0.3), 0px 8px 8px -8px rgba(0,0,0,0.3),
                inset 0 0 0 1px rgba(255,255,255,0.08);
    --shadow-4: 0px 2px 2px rgba(0,0,0,0.3), 0px 8px 16px -4px rgba(0,0,0,0.3),
                inset 0 0 0 1px rgba(255,255,255,0.08);
  }
}
[data-theme=dark] {
  --color-canvas: #000000;
  --color-canvas-soft: #111111;
  --color-canvas-soft-2: #1a1a1a;
  --color-primary: #ffffff;
  --color-on-primary: #000000;
  --color-ink: #ededed;
  --color-body: #a1a1a1;
  --color-mute: #444444;
  --color-hairline: #2e2e2e;
  --color-hairline-strong: #454545;
  --shadow-1: inset 0 0 0 1px rgba(255,255,255,0.08);
  --shadow-2: 0px 1px 1px rgba(0,0,0,0.4), 0px 2px 2px rgba(0,0,0,0.25),
              inset 0 0 0 1px rgba(255,255,255,0.08);
  --shadow-3: 0px 2px 2px rgba(0,0,0,0.3), 0px 8px 8px -8px rgba(0,0,0,0.3),
              inset 0 0 0 1px rgba(255,255,255,0.08);
  --shadow-4: 0px 2px 2px rgba(0,0,0,0.3), 0px 8px 16px -4px rgba(0,0,0,0.3),
              inset 0 0 0 1px rgba(255,255,255,0.08);
}

[data-theme=light] {
  --color-canvas: #ffffff;
  --color-canvas-soft: #fafafa;
  --color-canvas-soft-2: #f2f2f2;
  --color-primary: #000000;
  --color-on-primary: #ffffff;
  --color-ink: #000000;
  --color-body: #666666;
  --color-mute: #a1a1a1;
  --color-hairline: #eaeaea;
  --color-hairline-strong: #c9c9c9;
  --shadow-1: inset 0 0 0 1px rgba(0,0,0,0.08);
  --shadow-2: 0px 1px 1px rgba(0,0,0,0.04), 0px 2px 2px rgba(0,0,0,0.06),
              inset 0 0 0 1px rgba(0,0,0,0.08);
  --shadow-3: 0px 2px 2px rgba(0,0,0,0.06), 0px 8px 8px -8px rgba(0,0,0,0.06),
              inset 0 0 0 1px rgba(0,0,0,0.08);
  --shadow-4: 0px 2px 2px rgba(0,0,0,0.06), 0px 8px 16px -4px rgba(0,0,0,0.06),
              inset 0 0 0 1px rgba(0,0,0,0.08);
}

/* Base */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  height: 100%;
  font-family: var(--font-sans);
  background: var(--color-canvas-soft);
  color: var(--color-ink);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* layout lives in .app, not body */
/*  Scrollbar styling  */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--color-hairline-strong);
  border-radius: 99px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-body);
}

* {
  scrollbar-width: thin;
  scrollbar-color: var(--color-hairline-strong) transparent;
}

/* Atoms */
/* badge-secondary — small mono pill for technical labels */
.badge {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  background: var(--color-canvas-soft);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-full);
  padding: 2px var(--space-xs);
  color: var(--color-body);
  white-space: nowrap;
}

/* Nav-scale button — 6 px radius, 28 px tall */
.btn {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  height: 28px;
  padding: 0 var(--space-xs);
  border-radius: var(--rounded-sm);
  border: 1px solid var(--color-hairline);
  background: var(--color-canvas);
  color: var(--color-ink);
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.1s, border-color 0.1s, opacity 0.1s;
  /* Only hover plain (non-active, non-primary) buttons */
}
.btn:hover:not(.active):not(.btn--download) {
  background: var(--color-canvas-soft-2);
}
.btn {
  /* Active / selected state — polarity flip */
}
.btn.active {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-color: var(--color-primary);
}
.btn.active:hover {
  opacity: 0.85;
}
.btn {
  /* Download — primary-style */
}
.btn--download {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-color: var(--color-primary);
}
.btn--download:hover {
  opacity: 0.85;
}

/* Segmented button group */
.btn-group {
  display: flex;
}
.btn-group .btn {
  border-radius: 0;
  margin-right: -1px;
}
.btn-group .btn:first-child {
  border-radius: var(--rounded-sm) 0 0 var(--rounded-sm);
}
.btn-group .btn:last-child {
  border-radius: 0 var(--rounded-sm) var(--rounded-sm) 0;
  margin-right: 0;
}

.token {
  display: inline-block;
  padding: 1px 6px;
  border-radius: var(--rounded-xs);
  margin: 1px;
  font-family: var(--font-mono);
  font-size: 10px;
}

/* ─── Token type colours — Geist light ──────────────────────────────────────── */
.tk {
  background: rgba(0, 112, 243, 0.08);
  color: #0070f3;
} /* KEYWORD    — blue   */
.tp {
  background: rgba(0, 185, 130, 0.08);
  color: #00b882;
} /* PARTICIPANT — teal  */
.tm {
  background: var(--color-canvas-soft-2);
  color: var(--color-body);
} /* MESSAGE     */
.tr {
  background: rgba(255, 0, 128, 0.08);
  color: #f81ce5;
} /* RETURN     — pink  */
.tn {
  background: rgba(245, 166, 35, 0.1);
  color: #f5a623;
} /* NOTE       — amber */
.tg {
  background: rgba(121, 40, 202, 0.08);
  color: #7928ca;
} /* GROUP      — purple */
.td {
  background: rgba(0, 112, 243, 0.06);
  color: #0070f3;
} /* DIVIDER    — blue  */
.ta {
  background: rgba(0, 185, 130, 0.06);
  color: #00b882;
} /* ACTIVATE   — teal  */
.tb {
  background: rgba(249, 115, 22, 0.08);
  color: #f97316;
} /* BOX     — orange */
.tu {
  background: var(--color-canvas-soft-2);
  color: var(--color-mute);
} /* UNKNOWN */
/* ─── Geist dark ─────────────────────────────────────────────────────────────── */
[data-theme=dark] .tk {
  background: rgba(50, 145, 255, 0.12);
  color: #3291ff;
}
[data-theme=dark] .tp {
  background: rgba(80, 227, 194, 0.1);
  color: #50e3c2;
}
[data-theme=dark] .tm {
  background: var(--color-canvas-soft-2);
  color: var(--color-body);
}
[data-theme=dark] .tr {
  background: rgba(248, 28, 229, 0.1);
  color: #f81ce5;
}
[data-theme=dark] .tn {
  background: rgba(247, 183, 49, 0.1);
  color: #f7b731;
}
[data-theme=dark] .tg {
  background: rgba(159, 83, 255, 0.1);
  color: #9f53ff;
}
[data-theme=dark] .td {
  background: rgba(50, 145, 255, 0.08);
  color: #3291ff;
}
[data-theme=dark] .ta {
  background: rgba(80, 227, 194, 0.08);
  color: #50e3c2;
}
[data-theme=dark] .tb {
  background: rgba(251, 146, 60, 0.1);
  color: #fb923c;
}
[data-theme=dark] .tu {
  background: var(--color-canvas-soft-2);
  color: var(--color-mute);
}

/* Molecules */
textarea {
  width: 100%;
  height: 420px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.55;
  background: var(--color-canvas-soft-2);
  color: var(--color-ink);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-md);
  padding: var(--space-sm) var(--space-md);
  resize: vertical;
  outline: none;
  transition: border-color 0.12s;
}
textarea:focus {
  border-color: var(--color-hairline-strong);
}

.token-strip {
  margin-top: var(--space-xs);
  background: var(--color-canvas-soft);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-md);
  padding: var(--space-xs) var(--space-sm);
  min-height: 36px;
  font-size: 10px;
  line-height: 1.9;
}

.diagram-panel {
  overflow: hidden;
  border-radius: var(--rounded-md);
  padding: var(--space-lg);
  background: var(--color-canvas);
  box-shadow: var(--shadow-3);
  min-height: 420px;
  cursor: grab;
  user-select: none;
  touch-action: none;
  -webkit-overflow-scrolling: touch;
  /* fill remaining height on desktop */
}
@media screen and (min-width: 769px) {
  .diagram-panel {
    flex: 1;
    max-height: none;
  }
}
.diagram-panel {
  /* cap height on mobile */
}
@media screen and (max-width: 768px) {
  .diagram-panel {
    max-height: 80vh;
  }
}
.diagram-panel:active {
  cursor: grabbing;
}
.diagram-panel svg {
  display: block;
}

.zoom-controls {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
}

.zoom-level {
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  color: var(--color-mute);
  min-width: 38px;
  text-align: center;
}

/* Organisms */
.toolbar {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-hairline);
  margin-bottom: var(--space-md);
  flex-wrap: wrap;
}

.toolbar-actions {
  margin-left: auto;
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
}

.app {
  padding: var(--space-lg);
  height: 100dvh;
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
}

.panels {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: var(--space-lg);
  align-items: start;
  flex: 1;
  min-height: 0; /* allow flex child to shrink below content size */
}
@media screen and (max-width: 768px) {
  .panels {
    grid-template-columns: 1fr;
    flex: none;
  }
}
.panels {
  /* diagram column — stretch to grid row height and fill it */
}
@media screen and (min-width: 769px) {
  .panels {
    align-items: stretch;
  }
  .panels > *:last-child {
    display: flex;
    flex-direction: column;
    min-height: 0;
  }
}
.panels > * {
  min-width: 0;
  overflow: auto;
}
.panels > *:last-child {
  overflow: hidden;
}

.panel-label {
  display: flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-mute);
  margin-bottom: var(--space-xs);
}

svg.seq {
  display: block;
  margin: 0 auto;
}

.diagram-title {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.28px;
  fill: var(--color-ink);
  font-family: var(--font-sans);
  text-anchor: middle;
}

.participant rect {
  fill: var(--color-canvas);
  stroke: var(--color-hairline);
  stroke-width: 1;
}
.participant text {
  font-size: 12px;
  font-weight: 500;
  fill: var(--color-ink);
  font-family: var(--font-sans);
}

.lifeline {
  stroke: var(--color-hairline-strong);
  stroke-width: 0.75;
  stroke-dasharray: 5 4;
}

.activation-bar rect {
  fill: var(--color-canvas-soft-2);
  stroke: var(--color-hairline);
  stroke-width: 0.75;
}

.message-line {
  stroke: var(--color-ink);
  stroke-width: 1;
  fill: none;
}
.message-line--dashed {
  stroke: var(--color-hairline-strong);
  stroke-dasharray: 5 3;
}

.message-label {
  font-size: 11px;
  fill: var(--color-ink);
  font-family: var(--font-mono);
  text-anchor: middle;
}

.divider-line {
  stroke: var(--color-hairline-strong);
  stroke-width: 1.5;
}

.divider-label {
  font-size: 13px;
  font-weight: 600;
  fill: var(--color-ink);
  font-family: var(--font-sans);
  text-anchor: middle;
}

.divider-bg {
  fill: var(--color-canvas-soft);
  stroke: var(--color-hairline-strong);
  stroke-width: 1;
}

/* Note box — warning amber keeps it visually distinct */
.note-box path:first-child {
  fill: var(--color-warning-soft);
  stroke: var(--color-warning);
  stroke-width: 0.75;
}
.note-box .note-fold {
  fill: var(--color-warning);
  opacity: 0.4;
  stroke: none;
}
.note-box text {
  font-size: 11px;
  fill: #78350f;
  font-family: var(--font-mono);
  text-anchor: middle;
}

/* Detached text styles (rendered in top-layer group) */
.note-text {
  font-size: 11px;
  fill: #78350f;
  font-family: var(--font-mono);
  text-anchor: middle;
}

.group-tag-label {
  font-size: 10px;
  font-weight: 500;
  fill: var(--color-body);
  font-family: var(--font-sans);
}

.group-frame rect {
  fill: none;
  stroke: var(--color-hairline-strong);
  stroke-width: 1;
}

.group-else-line {
  stroke: var(--color-hairline-strong);
  stroke-width: 1;
}

.group-tag rect {
  fill: var(--color-canvas-soft);
  stroke: var(--color-hairline);
  stroke-width: 0.5;
}
.group-tag text {
  font-size: 10px;
  font-weight: 500;
  fill: var(--color-body);
  font-family: var(--font-sans);
}

.group-condition {
  font-size: 10px;
  font-style: italic;
  fill: var(--color-mute);
  font-family: var(--font-sans);
}

.arrow-filled {
  fill: var(--color-ink);
}

.arrow-open {
  fill: none;
  stroke: var(--color-hairline-strong);
  stroke-width: 1;
}

/* Utilities */
.stat {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-mute);
  margin-top: var(--space-xs);
}

.error {
  font-size: 13px;
  color: var(--color-error);
  padding: var(--space-sm);
}

/* Themes */
/* Light diagram theme */
#out[data-diagram-theme=light] {
  background: #ffffff;
}
#out[data-diagram-theme=light] .diagram-title {
  fill: #111111;
}
#out[data-diagram-theme=light] .participant rect {
  fill: #f5f5f5;
  stroke: #999999;
}
#out[data-diagram-theme=light] .participant text {
  fill: #111111;
}
#out[data-diagram-theme=light] .lifeline {
  stroke: #999999;
}
#out[data-diagram-theme=light] .activation-bar rect {
  fill: #e2e2e2;
  stroke: #999999;
}
#out[data-diagram-theme=light] .message-line {
  stroke: #111111;
}
#out[data-diagram-theme=light] .message-line--dashed {
  stroke: #555555;
}
#out[data-diagram-theme=light] .message-label {
  fill: #111111;
}
#out[data-diagram-theme=light] .divider-line {
  stroke: #c9c9c9;
}
#out[data-diagram-theme=light] .divider-bg {
  fill: #fafafa;
  stroke: #c9c9c9;
}
#out[data-diagram-theme=light] .divider-label {
  fill: #000000;
}
#out[data-diagram-theme=light] .note-box path:first-child {
  fill: #ffefcf;
  stroke: #d97706;
}
#out[data-diagram-theme=light] .note-box .note-fold {
  fill: #d97706;
}
#out[data-diagram-theme=light] .note-box text {
  fill: #78350f;
}
#out[data-diagram-theme=light] .note-text {
  fill: #78350f;
}
#out[data-diagram-theme=light] .group-frame rect {
  stroke: #666666;
}
#out[data-diagram-theme=light] .group-else-line {
  stroke: #666666;
}
#out[data-diagram-theme=light] .group-tag rect {
  fill: #ebebeb;
  stroke: #bbbbbb;
}
#out[data-diagram-theme=light] .group-tag text {
  fill: #444444;
}
#out[data-diagram-theme=light] .group-condition {
  fill: #666666;
}
#out[data-diagram-theme=light] .arrow-filled {
  fill: #111111;
}
#out[data-diagram-theme=light] .arrow-open {
  stroke: #555555;
}

/* Dark diagram theme */
#out[data-diagram-theme=dark] {
  background: #1a1a1a;
}
#out[data-diagram-theme=dark] .diagram-title {
  fill: #e8e8e8;
}
#out[data-diagram-theme=dark] .participant rect {
  fill: #2d2d2d;
  stroke: #686868;
}
#out[data-diagram-theme=dark] .participant text {
  fill: #e8e8e8;
}
#out[data-diagram-theme=dark] .lifeline {
  stroke: #686868;
}
#out[data-diagram-theme=dark] .activation-bar rect {
  fill: #363636;
  stroke: #686868;
}
#out[data-diagram-theme=dark] .message-line {
  stroke: #d4d4d4;
}
#out[data-diagram-theme=dark] .message-line--dashed {
  stroke: #a0a0a0;
}
#out[data-diagram-theme=dark] .message-label {
  fill: #e8e8e8;
}
#out[data-diagram-theme=dark] .divider-line {
  stroke: #454545;
}
#out[data-diagram-theme=dark] .divider-bg {
  fill: #1a1a1a;
  stroke: #454545;
}
#out[data-diagram-theme=dark] .divider-label {
  fill: #ededed;
}
#out[data-diagram-theme=dark] .note-box path:first-child {
  fill: #2d1e00;
  stroke: #a16207;
}
#out[data-diagram-theme=dark] .note-box .note-fold {
  fill: #a16207;
}
#out[data-diagram-theme=dark] .note-box text {
  fill: #fcd34d;
}
#out[data-diagram-theme=dark] .note-text {
  fill: #fcd34d;
}
#out[data-diagram-theme=dark] .group-frame rect {
  stroke: #909090;
}
#out[data-diagram-theme=dark] .group-else-line {
  stroke: #909090;
}
#out[data-diagram-theme=dark] .group-tag rect {
  fill: #2d2d2d;
  stroke: #606060;
}
#out[data-diagram-theme=dark] .group-tag text {
  fill: #b8b8b8;
}
#out[data-diagram-theme=dark] .group-condition {
  fill: #909090;
}
#out[data-diagram-theme=dark] .arrow-filled {
  fill: #d4d4d4;
}
#out[data-diagram-theme=dark] .arrow-open {
  stroke: #a0a0a0;
}

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