.c4it-vending-flow {
  --c4it-vending-ink: #1f2937;
  --c4it-vending-muted: #667085;
  --c4it-vending-line: #cbd5e1;
  --c4it-vending-blue: #2563eb;
  --c4it-vending-green: #138a5b;
  --c4it-vending-red: #c2410c;
  --c4it-vending-bg: #f6f8fb;
  color: var(--c4it-vending-ink);
  font-family: inherit;
  margin: 28px 0;
}

.c4it-vending-flow * {
  box-sizing: border-box;
}

.c4it-vending-flow__intro,
.c4it-vending-flow__message {
  background: var(--c4it-vending-bg);
  border: 1px solid #dbe3ef;
  border-radius: 8px;
  padding: 16px;
}

.c4it-vending-flow__intro h3 {
  font-size: 1.2rem;
  line-height: 1.45;
  margin: 0 0 8px;
}

.c4it-vending-flow__intro p,
.c4it-vending-flow__message p {
  line-height: 1.75;
  margin: 0;
}

.c4it-vending-flow__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.c4it-vending-flow__actions button {
  appearance: none;
  background: #fff;
  border: 1px solid #b7c3d6;
  border-radius: 6px;
  color: var(--c4it-vending-ink);
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  line-height: 1;
  min-height: 42px;
  padding: 0 14px;
}

.c4it-vending-flow__actions button[data-action="step"],
.c4it-vending-flow__actions button[data-action="run"] {
  background: var(--c4it-vending-blue);
  border-color: var(--c4it-vending-blue);
  color: #fff;
}

.c4it-vending-flow__stage {
  align-items: start;
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(250px, 0.86fr) minmax(300px, 1.14fr);
  margin-top: 16px;
}

.c4it-vending-flow__machine,
.c4it-vending-flow__chart {
  background: #fff;
  border: 1px solid #dbe3ef;
  border-radius: 8px;
  padding: 14px;
}

.c4it-vending-flow__machine-shell {
  background: linear-gradient(180deg, #e8edf5, #d7e0ed);
  border: 2px solid #93a4bc;
  border-radius: 16px 16px 10px 10px;
  box-shadow: inset 0 0 0 4px rgba(255,255,255,0.42);
  margin: 0 auto;
  max-width: 300px;
  min-height: 430px;
  overflow: hidden;
  padding: 14px;
  position: relative;
}

.c4it-vending-flow__machine-head {
  align-items: center;
  background: #18243a;
  border-radius: 8px;
  color: #fff;
  display: flex;
  justify-content: space-between;
  min-height: 42px;
  padding: 8px 10px;
}

.c4it-vending-flow__machine-head span {
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0;
}

.c4it-vending-flow__machine-head strong {
  background: #0b1220;
  border-radius: 4px;
  color: #79f2b5;
  font-size: 1.1rem;
  min-width: 72px;
  padding: 4px 8px;
  text-align: right;
}

.c4it-vending-flow__shelves {
  display: grid;
  gap: 10px;
  grid-template-columns: 1fr 1fr;
  margin-top: 14px;
}

.c4it-vending-flow__drink {
  appearance: none;
  background: #f8fafc;
  border: 2px solid #b9c6d8;
  border-radius: 8px;
  color: var(--c4it-vending-ink);
  min-height: 130px;
  padding: 10px;
  position: relative;
}

.c4it-vending-flow__drink span {
  background: linear-gradient(180deg, #f97316, #dc2626);
  border-radius: 16px 16px 8px 8px;
  display: block;
  height: 76px;
  margin: 0 auto 8px;
  max-width: 42px;
}

.c4it-vending-flow__drink[data-drink="120"] span {
  background: linear-gradient(180deg, #38bdf8, #2563eb);
}

.c4it-vending-flow__drink strong {
  display: block;
  font-size: 0.94rem;
}

.c4it-vending-flow__drink.is-selected {
  border-color: var(--c4it-vending-blue);
  box-shadow: 0 0 0 4px rgba(37,99,235,0.16);
}

.c4it-vending-flow__panel {
  align-items: center;
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 16px;
}

.c4it-vending-flow__coin-slot {
  align-items: center;
  background: #f8fafc;
  border: 2px solid #94a3b8;
  border-radius: 8px;
  display: flex;
  height: 62px;
  justify-content: center;
  position: relative;
  width: 96px;
}

.c4it-vending-flow__coin-slot::before {
  background: #111827;
  border-radius: 999px;
  content: "";
  height: 6px;
  left: 18px;
  position: absolute;
  right: 18px;
  top: 10px;
}

.c4it-vending-flow__coin {
  align-items: center;
  background: #facc15;
  border: 2px solid #a16207;
  border-radius: 50%;
  color: #713f12;
  display: flex;
  font-size: 0.78rem;
  font-weight: 800;
  height: 38px;
  justify-content: center;
  opacity: 0;
  transform: translateY(-22px);
  transition: opacity 0.25s ease, transform 0.3s ease;
  width: 38px;
}

.c4it-vending-flow__coin.is-active {
  opacity: 1;
  transform: translateY(8px);
}

.c4it-vending-flow__return {
  align-items: center;
  background: #f8fafc;
  border: 2px solid #94a3b8;
  border-radius: 8px;
  display: flex;
  height: 62px;
  justify-content: center;
  position: relative;
  width: 74px;
}

.c4it-vending-flow__return::before {
  background: #334155;
  border-radius: 999px;
  content: "";
  height: 18px;
  left: 50%;
  position: absolute;
  top: 8px;
  transform: translateX(-50%);
  transition: transform 0.2s ease, background 0.2s ease;
  width: 42px;
}

.c4it-vending-flow__return span {
  color: #334155;
  font-size: 0.78rem;
  font-weight: 800;
  line-height: 1;
  margin-top: 24px;
}

.c4it-vending-flow__return.is-active {
  border-color: var(--c4it-vending-green);
  box-shadow: 0 0 0 4px rgba(19,138,91,0.14);
}

.c4it-vending-flow__return.is-active::before {
  background: var(--c4it-vending-green);
  transform: translate(-50%, 6px);
}

.c4it-vending-flow__tray {
  align-items: center;
  background: #111827;
  border-radius: 8px;
  display: flex;
  height: 68px;
  justify-content: center;
  margin-top: 18px;
  overflow: hidden;
}

.c4it-vending-flow__tray span {
  background: #fff;
  border-radius: 12px 12px 6px 6px;
  display: block;
  height: 46px;
  opacity: 0;
  transform: translateY(-36px);
  transition: opacity 0.25s ease, transform 0.3s ease;
  width: 32px;
}

.c4it-vending-flow__tray span.is-180 {
  background: linear-gradient(180deg, #f97316, #dc2626);
  opacity: 1;
  transform: translateY(0);
}

.c4it-vending-flow__tray span.is-120 {
  background: linear-gradient(180deg, #38bdf8, #2563eb);
  opacity: 1;
  transform: translateY(0);
}

.c4it-vending-flow__change {
  bottom: 12px;
  display: flex;
  gap: 4px;
  left: 16px;
  min-height: 24px;
  position: absolute;
}

.c4it-vending-flow__change span {
  background: #e5e7eb;
  border: 1px solid #64748b;
  border-radius: 50%;
  display: block;
  height: 22px;
  width: 22px;
}

.c4it-vending-flow__stats {
  display: grid;
  gap: 8px;
  grid-template-columns: 1fr 1fr;
  margin-top: 12px;
}

.c4it-vending-flow__stats div {
  background: var(--c4it-vending-bg);
  border: 1px solid #dbe3ef;
  border-radius: 6px;
  padding: 10px;
}

.c4it-vending-flow__stats span {
  color: var(--c4it-vending-muted);
  display: block;
  font-size: 0.82rem;
}

.c4it-vending-flow__stats strong {
  display: block;
  font-size: 1.08rem;
  margin-top: 2px;
}

.c4it-vending-flow__chart svg {
  display: block;
  height: auto;
  max-height: 760px;
  width: 100%;
}

.c4it-vending-flow__line {
  fill: none;
  marker-end: url(#c4it-vending-arrow);
  stroke: var(--c4it-vending-line);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 3;
}

.c4it-vending-flow__line--return {
  stroke-dasharray: 8 7;
}

.c4it-vending-flow__node rect,
.c4it-vending-flow__node polygon {
  fill: #fff;
  stroke: #94a3b8;
  stroke-width: 3;
}

.c4it-vending-flow__node text,
.c4it-vending-flow__label {
  fill: var(--c4it-vending-ink);
  font-size: 15px;
  font-weight: 700;
  text-anchor: middle;
}

.c4it-vending-flow__label {
  fill: var(--c4it-vending-muted);
  font-size: 13px;
}

.c4it-vending-flow__node.is-active rect,
.c4it-vending-flow__node.is-active polygon {
  fill: #eff6ff;
  stroke: var(--c4it-vending-blue);
}

.c4it-vending-flow__node.is-done rect,
.c4it-vending-flow__node.is-done polygon {
  fill: #ecfdf3;
  stroke: var(--c4it-vending-green);
}

.c4it-vending-flow__message {
  margin-top: 16px;
}

.c4it-vending-flow__message strong {
  display: block;
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.c4it-vending-flow__message ol {
  display: grid;
  gap: 6px;
  line-height: 1.6;
  margin: 12px 0 0;
  padding-left: 1.35em;
}

.c4it-vending-flow__message li::marker {
  color: var(--c4it-vending-blue);
  font-weight: 700;
}

@media (max-width: 720px) {
  .c4it-vending-flow {
    margin: 22px 0;
  }

  .c4it-vending-flow__intro,
  .c4it-vending-flow__message,
  .c4it-vending-flow__machine,
  .c4it-vending-flow__chart {
    padding: 12px;
  }

  .c4it-vending-flow__actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .c4it-vending-flow__stage {
    gap: 12px;
    grid-template-columns: 1fr;
  }

  .c4it-vending-flow__machine-shell {
    max-width: 280px;
    min-height: 400px;
  }

  .c4it-vending-flow__drink {
    min-height: 112px;
    padding: 8px;
  }

  .c4it-vending-flow__drink span {
    height: 62px;
  }

  .c4it-vending-flow__chart svg {
    max-height: none;
  }
}