/* Sign builder is scoped to the student cabinet; the road signs retain their
   prescribed colours inside neutral, high-contrast option tiles. */
.sign-builder {
  --sb-bg: #111726;
  --sb-panel: #1b2437;
  --sb-panel-soft: #202a40;
  --sb-border: #354057;
  --sb-text: #f6f6fa;
  --sb-muted: #b1b9ca;
  --sb-accent: #b6a5ff;
  --sb-accent-ink: #211b36;
  --sb-tile: #f7f8fa;
  min-width: 0;
  color: var(--sb-text);
  color-scheme: dark;
}

.sign-builder[hidden],
.sign-builder [hidden],
.sb-entry[hidden] { display: none !important; }
.sign-builder *, .sb-entry, .sb-entry * { box-sizing: border-box; }
.sign-builder :is(h1, h2, h3, p) { overflow-wrap: anywhere; }
.sign-builder :is(button, select, a) { -webkit-tap-highlight-color: transparent; }
.sign-builder :is(button, select) { font: inherit; }
.sign-builder :is(button, a, select):focus-visible,
.lobby-view .sign-builder :is(button, a, select):focus-visible,
.sb-entry:focus-visible {
  outline: 3px solid #d1c7ff;
  outline-offset: 4px;
}
.sign-builder [tabindex="-1"]:focus { outline: none; }
.sign-builder button:disabled {
  cursor: default;
  opacity: .56;
  transform: none;
  box-shadow: none;
}
.sign-builder[aria-busy="true"] button:disabled { cursor: wait; }

.sign-builder .sb-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
}
.sign-builder .sb-heading > div { min-width: 0; }
.sign-builder .hub-breadcrumb {
  display: flex;
  width: fit-content;
  align-items: center;
  min-height: 44px;
  margin: -8px 0 10px;
  color: var(--sb-muted);
  font-size: 13px;
  text-decoration: none;
}
.sign-builder .hub-breadcrumb:hover { color: var(--sb-accent); }
.sign-builder .sb-eyebrow {
  display: block;
  color: var(--sb-accent);
  font-size: 10px;
  font-weight: 750;
  line-height: 1.5;
  letter-spacing: .13em;
}
.sign-builder .sb-heading h1 {
  margin: 8px 0 10px;
  font-size: clamp(32px, 3.7vw, 46px);
  font-weight: 750;
  line-height: 1.08;
  letter-spacing: -.045em;
}
.sign-builder .sb-heading p {
  margin: 0;
  color: var(--sb-muted);
  font-size: 14px;
  line-height: 1.6;
}
.sign-builder .sb-pill {
  flex: 0 0 auto;
  padding: 9px 12px;
  border: 1px solid #51466d;
  border-radius: 999px;
  color: #d0c5ff;
  background: #b6a5ff0b;
  font-size: 11px;
  font-weight: 650;
  letter-spacing: .05em;
}
.sign-builder .sb-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 296px;
  align-items: start;
  gap: 24px;
}
.sign-builder :is(.sb-main, .sb-sidebar) {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 20px;
}
.sign-builder .sb-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  padding: 19px 24px;
  border: 1px solid var(--sb-border);
  border-radius: 18px;
  background: var(--sb-panel);
}
.sign-builder .sb-metrics > div { min-width: 0; }
.sign-builder .sb-metrics > div + div {
  padding-left: 20px;
  border-left: 1px solid var(--sb-border);
}
.sign-builder .sb-metrics strong {
  display: block;
  font-size: 27px;
  font-weight: 650;
  line-height: 1.2;
  letter-spacing: -.035em;
  font-variant-numeric: tabular-nums;
}
.sign-builder .sb-metrics span {
  display: block;
  margin-top: 5px;
  color: var(--sb-muted);
  font-size: 11px;
  line-height: 1.45;
}
.sign-builder .sb-hero {
  position: relative;
  display: flex;
  min-height: 310px;
  align-items: center;
  padding: 32px;
  overflow: hidden;
  isolation: isolate;
  border: 1px solid #47415f;
  border-radius: 24px;
  background: #1b2034;
}
.sign-builder .sb-hero-copy { position: relative; z-index: 2; width: 60%; min-width: 0; }
.sign-builder .sb-hero h2 {
  margin: 15px 0 14px;
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -.035em;
  white-space: pre-line;
}
.sign-builder .sb-hero p {
  max-width: 310px;
  margin: 0 0 23px;
  color: #c1c7d6;
  font-size: 13px;
  line-height: 1.65;
}
.sign-builder .sb-hero-art {
  position: absolute;
  z-index: 1;
  top: 0;
  right: 0;
  width: 55%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  pointer-events: none;
  mask-image: linear-gradient(90deg, transparent, #000 27%);
}
.sign-builder .sb-button {
  display: inline-flex;
  min-width: 0;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 11px 18px;
  border: 1px solid transparent;
  border-radius: 11px;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.4;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: background .16s ease, border-color .16s ease, transform .16s ease;
}
.sign-builder .sb-primary { color: var(--sb-accent-ink); background: var(--sb-accent); border-color: var(--sb-accent); }
.sign-builder .sb-primary:hover:not(:disabled) { background: #c6b8ff; border-color: #c6b8ff; }
.sign-builder .sb-secondary { color: var(--sb-text); background: var(--sb-panel-soft); border-color: #47536d; }
.sign-builder .sb-secondary:hover:not(:disabled) { background: #2b3550; border-color: #877aa9; }
.sign-builder .sb-button:active:not(:disabled) { transform: translateY(1px); }

.sign-builder :is(.sb-workbench, .sb-mode-picker, .sb-series-summary) {
  min-width: 0;
  padding: 28px;
  border: 1px solid var(--sb-border);
  border-radius: 22px;
  background: var(--sb-panel);
}
.sign-builder .sb-task-label {
  display: block;
  color: var(--sb-muted);
  font-size: 10px;
  font-weight: 650;
  line-height: 1.5;
  letter-spacing: .12em;
}
.sign-builder .sb-task-name {
  margin: 10px 0 9px;
  font-size: clamp(25px, 2.65vw, 33px);
  line-height: 1.18;
  letter-spacing: -.025em;
}
.sign-builder .sb-sign-number { color: var(--sb-muted); font-size: 12px; line-height: 1.5; }
.sign-builder .sb-steps {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 13px 22px;
  margin: 22px 0 0;
  padding: 19px 0;
  border-top: 1px solid var(--sb-border);
  border-bottom: 1px solid var(--sb-border);
  list-style: none;
}
.sign-builder .sb-steps li { display: flex; align-items: center; gap: 8px; color: #9ca5b9; font-size: 12px; line-height: 1.3; }
.sign-builder .sb-steps li > span {
  display: inline-flex;
  width: 25px;
  height: 25px;
  flex: 0 0 25px;
  align-items: center;
  justify-content: center;
  border: 1px solid #586176;
  border-radius: 50%;
  font-size: 10px;
  font-weight: 750;
}
.sign-builder .sb-steps li[data-state="current"] { color: #ded7ff; font-weight: 700; }
.sign-builder .sb-steps li[data-state="current"] > span { color: var(--sb-accent-ink); border-color: var(--sb-accent); background: var(--sb-accent); }
.sign-builder .sb-steps li[data-state="done"] { color: #99e0ba; }
.sign-builder .sb-steps li[data-state="done"] > span { color: #a1eac4; border-color: #458268; background: #224436; }
.sign-builder .sb-stage-layout { display: flex; align-items: center; gap: 20px; padding: 22px 0; }
.sign-builder .sb-preview {
  display: flex;
  width: 104px;
  min-height: 119px;
  flex: 0 0 104px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 12px 7px 9px;
  border: 1px solid #46516a;
  border-radius: 13px;
  background: #232e45;
}
.sign-builder .sb-sign { display: block; width: 128px; height: 128px; flex: 0 0 auto; }
.sign-builder :is(.sb-sign, .sb-mini-sign) { position: relative; overflow: hidden; border-radius: 8px; isolation: isolate; }
.sign-builder :is(.sb-sign, .sb-mini-sign) img { display: block; width: 100%; height: 100%; object-fit: contain; }
.sign-builder .sb-raster-layer { position: absolute; display: block; overflow: hidden; pointer-events: none; }
.sign-builder .sb-raster-layer img { position: absolute; max-width: none; object-fit: fill; }
.sign-builder .sb-art-pending { display: grid; min-width: 0; min-height: 56px; place-items: center; padding: 8px; color: #71798b; font-size: 10px; line-height: 1.4; text-align: center; overflow-wrap: anywhere; }
.sign-builder .sb-preview .sb-sign { width: 68px; height: 68px; }
.sign-builder .sb-preview-label { color: #c9c3de; font-size: 10px; line-height: 1.4; text-align: center; }
.sign-builder .sb-preview-placeholder {
  display: grid;
  width: 68px;
  height: 68px;
  place-items: center;
  border: 1px dashed #7e719e;
  border-radius: 50%;
  color: var(--sb-accent);
  font-size: 30px;
  font-weight: 500;
}
.sign-builder .sb-stage-copy { min-width: 0; }
.sign-builder .sb-stage-title { margin: 0 0 8px; font-size: 20px; line-height: 1.3; font-weight: 650; letter-spacing: -.02em; }
.sign-builder .sb-stage-hint { max-width: 440px; margin: 0; color: var(--sb-muted); font-size: 13px; line-height: 1.55; }
.sign-builder .sb-options { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.sign-builder .sb-option {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 148px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 12px;
  padding: 17px 11px 12px;
  border: 2px solid transparent;
  border-radius: 14px;
  color: #eef1fa;
  background: #111726;
  cursor: pointer;
  transition: border-color .14s ease, background .14s ease, transform .14s ease, box-shadow .14s ease;
}
.sign-builder .sb-option:hover:not(:disabled) { background: #192137; border-color: var(--sb-accent); box-shadow: 0 0 0 1px var(--sb-accent); transform: translateY(-2px); }
.sign-builder .sb-option:active:not(:disabled) { transform: translateY(0); }
.sign-builder .sb-option[aria-pressed="true"] { background: #29213d; border-color: var(--sb-accent); }
.sign-builder .sb-option-index { position: absolute; top: 9px; left: 10px; color: #707988; font-size: 9px; font-weight: 700; font-variant-numeric: tabular-nums; }
.sign-builder .sb-option-label { max-width: 100%; color: #d6dbea; font-size: 11px; font-weight: 600; line-height: 1.35; text-align: center; overflow-wrap: anywhere; }
.sign-builder .sb-option:disabled { opacity: .65; }
.sign-builder .sb-feedback {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px;
  border: 1px solid #386c57;
  border-radius: 14px;
  background: #1d3a32;
  color: #a4efc7;
}
.sign-builder .sb-feedback[data-kind="error"] { color: #ffb8b9; background: #3c2831; border-color: #83454d; }
.sign-builder .sb-feedback > div { min-width: 0; }
.sign-builder .sb-feedback strong { font-size: 14px; line-height: 1.4; letter-spacing: .035em; }
.sign-builder .sb-feedback p { margin: 8px 0 0; color: #d0d8da; font-size: 12px; line-height: 1.6; }
.sign-builder .sb-feedback .sb-button { flex: 0 0 auto; max-width: 100%; }
.sign-builder .sb-round-footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 16px; margin-top: 18px; color: var(--sb-muted); font-size: 11px; line-height: 1.5; }
.sign-builder .sb-saving { color: #aaa2c2; }
.sign-builder .sb-saving::before { display: inline-block; width: 5px; height: 5px; margin: 0 6px 2px 0; border-radius: 50%; background: #a69aca; content: ""; }

.sign-builder .sb-panel { min-width: 0; padding: 23px; border: 1px solid var(--sb-border); border-radius: 20px; background: var(--sb-panel); }
.sign-builder .sb-panel h2 { margin: 9px 0 18px; font-size: 20px; line-height: 1.3; font-weight: 650; letter-spacing: -.025em; }
.sign-builder .sb-rules { display: grid; gap: 19px; margin: 0; padding: 0; list-style: none; counter-reset: sb-rule; }
.sign-builder .sb-rules li { position: relative; min-height: 27px; padding-left: 36px; counter-increment: sb-rule; }
.sign-builder .sb-rules li::before { position: absolute; top: 0; left: 0; display: grid; width: 24px; height: 24px; place-items: center; border: 1px solid #514a70; border-radius: 8px; color: #c7bbf5; background: #b6a5ff08; font-size: 10px; content: counter(sb-rule, decimal-leading-zero); }
.sign-builder .sb-rules strong { font-size: 12px; line-height: 1.5; font-weight: 650; }
.sign-builder .sb-rules p { margin: 4px 0 0; color: var(--sb-muted); font-size: 11px; line-height: 1.6; }
.sign-builder .sb-empty { margin: 15px 0 0; color: var(--sb-muted); font-size: 12px; line-height: 1.65; }
.sign-builder .sb-panel > .sb-empty:first-of-type { margin-top: 0; }
.sign-builder .sb-rules + .sb-empty { padding-top: 18px; border-top: 1px solid var(--sb-border); }
.sign-builder .sb-progress-track { height: 5px; margin: 13px 0 18px; overflow: hidden; border-radius: 99px; background: #354057; }
.sign-builder .sb-progress-track > span { display: block; height: 100%; border-radius: inherit; background: var(--sb-accent); transition: width .25s ease; }
.sign-builder .sb-collection { display: flex; flex-direction: column; gap: 0; margin: 0 0 12px; padding: 0; list-style: none; }
.sign-builder .sb-collection:empty { display: none; }
.sign-builder .sb-collection-item { display: flex; align-items: center; gap: 10px; padding: 12px 0; border-top: 1px solid var(--sb-border); }
.sign-builder .sb-mini-sign { display: grid; width: 36px; height: 36px; flex: 0 0 36px; place-items: center; }
.sign-builder .sb-undiscovered { width: 32px; height: 32px; margin-inline: 2px; flex-basis: 32px; border: 1px dashed #716585; border-radius: 8px; color: var(--sb-accent); font-size: 18px; }
.sign-builder .sb-collection-copy { min-width: 0; flex: 1; }
.sign-builder .sb-collection-copy strong { display: block; font-size: 11px; font-weight: 600; line-height: 1.4; overflow-wrap: anywhere; }
.sign-builder .sb-collection-copy small { display: block; margin-top: 4px; color: var(--sb-muted); font-size: 10px; line-height: 1.4; }
.sign-builder .sb-count { flex: 0 0 auto; color: #a4e4c1; font-size: 13px; }
.sign-builder .sb-panel > .sb-button { width: 100%; font-size: 11px; }
.sign-builder .sb-source { margin-top: 25px; padding: 17px 0 6px; border-top: 1px solid var(--sb-border); color: var(--sb-muted); }
.sign-builder .sb-source summary { width: fit-content; min-height: 30px; font-size: 12px; line-height: 1.7; cursor: pointer; }
.sign-builder .sb-source summary:focus-visible { outline: 3px solid var(--sb-accent); outline-offset: 4px; }
.sign-builder .sb-source p { max-width: 840px; margin: 10px 0 0; font-size: 11px; line-height: 1.75; }
.sign-builder .sb-source a { color: #cbbfff; text-underline-offset: 3px; }
.sign-builder .sb-notice { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 20px; padding: 16px 20px; border: 1px solid #8a634b; border-radius: 14px; color: #ffd5b6; background: #3b2e2b; font-size: 13px; line-height: 1.5; }
.sign-builder .sb-notice .sb-button { flex: 0 0 auto; }

/* Session setup and its persistent, compact progress indicator. */
.sign-builder .sb-mode-picker h2 { margin: 0 0 8px; font-size: 22px; font-weight: 650; line-height: 1.3; letter-spacing: -.025em; }
.sign-builder .sb-mode-picker > p { margin: 0 0 20px; color: var(--sb-muted); font-size: 13px; line-height: 1.55; }
.sign-builder .sb-modes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin-top: 20px; }
.sign-builder .sb-mode {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 108px;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 7px;
  padding: 17px 15px;
  border: 1px solid #46516a;
  border-radius: 13px;
  color: var(--sb-text);
  background: #202a40;
  text-align: left;
  cursor: pointer;
  transition: background .16s ease, border-color .16s ease, box-shadow .16s ease;
}
.sign-builder .sb-mode strong { display: block; font-size: 14px; font-weight: 650; line-height: 1.35; }
.sign-builder .sb-mode span { display: block; color: var(--sb-muted); font-size: 11px; line-height: 1.5; }
.sign-builder .sb-mode:hover:not(:disabled) { border-color: #a092c9; background: #2a3049; }
.sign-builder .sb-mode[aria-pressed="true"] { border-color: var(--sb-accent); background: #332e4f; box-shadow: inset 0 0 0 1px var(--sb-accent); }
.sign-builder .sb-mode[aria-pressed="true"] strong { color: #e4ddff; }
.sign-builder .sb-mode[aria-pressed="true"] span { color: #ccc4e4; }
.sign-builder .sb-category-field { display: flex; flex-direction: column; gap: 8px; margin-top: 20px; }
.sign-builder .sb-category-field label { color: #e0ddec; font-size: 12px; font-weight: 600; line-height: 1.4; }
.sign-builder .sb-category-field select {
  width: 100%;
  min-width: 0;
  min-height: 48px;
  padding: 12px 36px 12px 14px;
  border: 1px solid #53607b;
  border-radius: 10px;
  color: var(--sb-text);
  background-color: #151e30;
  font-size: 13px;
  line-height: 1.45;
  text-overflow: ellipsis;
  cursor: pointer;
}
.sign-builder .sb-category-field select:disabled { cursor: default; opacity: .56; }
.sign-builder .sb-category-field option { color: var(--sb-text); background: #151e30; }
.sign-builder .sb-mode-picker .sb-setup-note { margin: 16px 0 20px; color: var(--sb-muted); font-size: 12px; line-height: 1.65; }
.sign-builder .sb-mode-picker > .sb-button { min-width: 172px; }
.sign-builder .sb-series-progress { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 16px; padding: 15px 20px; border: 1px solid #544772; border-radius: 14px; background: #25243c; }
.sign-builder .sb-series-progress > header { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; width: 100%; gap: 8px 14px; }
.sign-builder .sb-series-progress strong { color: #ddd4ff; font-size: 13px; font-weight: 650; line-height: 1.4; }
.sign-builder .sb-series-progress span { color: #bdb5d2; font-size: 12px; line-height: 1.5; }
.sign-builder .sb-series-progress .sb-progress-track { flex-basis: 100%; width: 100%; margin: 2px 0 0; background: #453a5c; }
.sign-builder .sb-series-progress .sb-progress-track > span { background: var(--sb-accent); }
.sign-builder .sb-series-progress .sb-button { min-height: 36px; padding: 7px 12px; font-size: 11px; }
.sign-builder .sb-series-summary { padding-block: 32px; border-color: #5d537c; background: linear-gradient(135deg, #2a2943, #1b2437 75%); }
.sign-builder .sb-series-summary h2 { margin: 8px 0 13px; font-size: clamp(25px, 3vw, 34px); font-weight: 700; line-height: 1.15; letter-spacing: -.03em; }
.sign-builder .sb-series-summary p { max-width: 560px; margin: 12px 0; color: #c2c6d6; font-size: 14px; line-height: 1.65; }
.sign-builder .sb-series-summary .sb-metrics { margin-block: 24px; background: #141b2c80; }
.sign-builder .sb-series-summary .sb-button { margin: 10px 10px 0 0; }
.sign-builder .sb-feedback p.sb-series-summary { margin: 14px 0 0; padding: 12px 0 0; border: 0; border-top: 1px solid #48725f; border-radius: 0; background: none; color: #bcebd0; font-size: 13px; font-weight: 600; line-height: 1.55; }

/* Home entry point is the only component rendered outside .sign-builder. */
.sb-entry {
  position: relative;
  display: flex;
  min-height: 136px;
  align-items: center;
  gap: 24px;
  margin-top: 24px;
  padding: 18px 26px 18px 18px;
  overflow: hidden;
  border: 1px solid #51446e;
  border-radius: 22px;
  color: #f6f6fa;
  background: #242337;
  text-decoration: none;
  transition: border-color .16s ease, background .16s ease;
}
.sb-entry:hover { border-color: #aa98dd; background: #2a283f; }
.sb-entry-art { display: block; width: 112px; height: 100px; flex: 0 0 112px; overflow: hidden; border-radius: 14px; }
.sb-entry-art img { display: block; width: 100%; height: 100%; object-fit: cover; }
.sb-entry-copy { min-width: 0; flex: 1; }
.sb-entry-copy .sb-eyebrow { display: block; margin-bottom: 6px; color: #c8baff; font-size: 10px; font-weight: 650; line-height: 1.5; letter-spacing: .12em; }
.sb-entry-copy :is(h2, h3, strong) { display: block; margin: 0; color: #f6f6fa; font-size: 23px; font-weight: 650; line-height: 1.2; letter-spacing: -.025em; }
.sb-entry-copy p { margin: 7px 0 0; color: #b9b7ca; font-size: 13px; line-height: 1.5; }
.sb-entry-arrow { display: grid; width: 44px; height: 44px; flex: 0 0 44px; place-items: center; border: 1px solid #8571b2; border-radius: 50%; color: #d6c9ff; background: #b6a5ff10; font-size: 24px; }

@media (max-width: 1050px) {
  .sign-builder .sb-layout { grid-template-columns: minmax(0, 1fr) 254px; gap: 18px; }
  .sign-builder :is(.sb-workbench, .sb-mode-picker, .sb-series-summary) { padding: 22px; }
  .sign-builder .sb-panel { padding: 19px; }
  .sign-builder .sb-hero { min-height: 290px; padding: 25px; }
  .sign-builder .sb-hero-copy { width: 69%; }
  .sign-builder .sb-hero-art { right: -8%; width: 57%; opacity: .8; }
  .sign-builder .sb-feedback { align-items: flex-start; flex-direction: column; }
  .sign-builder .sb-steps { gap: 12px 14px; }
  .sign-builder .sb-mode { padding: 15px 12px; }
  .sign-builder .sb-mode strong { font-size: 13px; }
}
@media (max-width: 860px) {
  .sign-builder .sb-layout { grid-template-columns: minmax(0, 1fr); }
  .sign-builder .sb-sidebar { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; gap: 18px; }
  .sign-builder .sb-hero { min-height: 280px; }
  .sign-builder .sb-hero-copy { width: 58%; }
  .sign-builder .sb-hero-art { right: 0; width: 50%; opacity: 1; }
  .sign-builder .sb-feedback { flex-direction: row; align-items: center; }
}
@media (max-width: 600px) {
  .sign-builder .sb-heading { gap: 12px; align-items: flex-start; margin-bottom: 22px; }
  .sign-builder .sb-heading h1 { font-size: 34px; }
  .sign-builder .sb-heading p { font-size: 12px; }
  .sign-builder .sb-heading .sb-pill { margin-top: 46px; padding: 7px 9px; font-size: 9px; }
  .sign-builder .sb-main { gap: 14px; }
  .sign-builder .sb-metrics { gap: 9px; padding: 16px; border-radius: 14px; }
  .sign-builder .sb-metrics > div + div { padding-left: 12px; }
  .sign-builder .sb-metrics strong { font-size: 24px; }
  .sign-builder .sb-metrics span { font-size: 10px; }
  .sign-builder .sb-hero { min-height: 255px; padding: 23px; border-radius: 18px; }
  .sign-builder .sb-hero-copy { width: 76%; }
  .sign-builder .sb-hero h2 { font-size: 29px; }
  .sign-builder .sb-hero p { max-width: 235px; font-size: 12px; }
  .sign-builder .sb-hero .sb-eyebrow { max-width: 190px; font-size: 9px; }
  .sign-builder .sb-hero-art { top: 5%; right: -19%; width: 72%; height: 95%; opacity: .5; mask-image: linear-gradient(90deg, transparent, #000 55%); }
  .sign-builder :is(.sb-workbench, .sb-mode-picker, .sb-series-summary) { padding: 19px; border-radius: 18px; }
  .sign-builder .sb-task-name { font-size: 27px; }
  .sign-builder .sb-steps { gap: 10px 15px; margin-top: 18px; padding: 15px 0; }
  .sign-builder .sb-steps li { gap: 6px; font-size: 11px; }
  .sign-builder .sb-steps li > span { width: 22px; height: 22px; flex-basis: 22px; font-size: 9px; }
  .sign-builder .sb-stage-layout { gap: 15px; padding: 18px 0; }
  .sign-builder .sb-preview { width: 82px; min-height: 100px; flex-basis: 82px; padding: 10px 6px 8px; gap: 7px; }
  .sign-builder .sb-preview :is(.sb-sign, .sb-preview-placeholder) { width: 56px; height: 56px; }
  .sign-builder .sb-preview-label { font-size: 9px; }
  .sign-builder .sb-stage-title { font-size: 18px; }
  .sign-builder .sb-stage-hint { font-size: 12px; }
  .sign-builder .sb-options { gap: 9px; }
  .sign-builder .sb-option { min-height: 121px; gap: 9px; padding: 16px 6px 9px; border-radius: 11px; }
  .sign-builder .sb-option .sb-sign { width: 76px; height: 76px; }
  .sign-builder .sb-option-label { font-size: 10px; }
  .sign-builder .sb-option-index { top: 6px; left: 7px; font-size: 8px; }
  .sign-builder .sb-feedback { flex-direction: column; align-items: stretch; padding: 17px; }
  .sign-builder .sb-feedback strong { font-size: 13px; }
  .sign-builder .sb-sidebar { grid-template-columns: minmax(0, 1fr); gap: 14px; }
  .sign-builder .sb-panel { padding: 21px; border-radius: 18px; }
  .sign-builder .sb-panel h2 { font-size: 22px; }
  .sign-builder .sb-rules { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px 16px; }
  .sign-builder .sb-collection-copy strong { font-size: 12px; }
  .sign-builder .sb-source { margin-top: 20px; }
  .sign-builder .sb-notice { align-items: stretch; flex-direction: column; padding: 16px; }
  .sign-builder .sb-mode-picker h2 { font-size: 21px; }
  .sign-builder .sb-modes { gap: 8px; margin-top: 17px; }
  .sign-builder .sb-mode { min-height: 112px; padding: 13px 10px; }
  .sign-builder .sb-mode strong { font-size: 12px; }
  .sign-builder .sb-mode span { font-size: 10px; }
  .sign-builder .sb-category-field select { font-size: 12px; }
  .sign-builder .sb-mode-picker > .sb-button { width: 100%; }
  .sign-builder .sb-series-progress { padding: 13px 16px; }
  .sign-builder .sb-series-summary .sb-button { width: 100%; margin-right: 0; }
  .sb-entry { gap: 14px; min-height: 117px; margin-top: 14px; padding: 15px; border-radius: 18px; }
  .sb-entry-art { width: 78px; height: 82px; flex-basis: 78px; border-radius: 10px; }
  .sb-entry-copy :is(h2, h3, strong) { font-size: 21px; }
  .sb-entry-copy p { font-size: 11px; }
  .sb-entry-copy .sb-eyebrow { font-size: 8px; }
  .sb-entry-arrow { width: 32px; height: 32px; flex-basis: 32px; font-size: 19px; }
}
@media (max-width: 380px) {
  .sign-builder .sb-heading h1 { font-size: 30px; }
  .sign-builder .sb-heading .sb-pill { padding: 6px 7px; font-size: 8px; }
  .sign-builder .sb-eyebrow { font-size: 9px; }
  .sign-builder :is(.sb-workbench, .sb-mode-picker, .sb-series-summary) { padding: 15px; }
  .sign-builder .sb-metrics { padding: 14px 12px; gap: 7px; }
  .sign-builder .sb-metrics > div + div { padding-left: 9px; }
  .sign-builder .sb-metrics strong { font-size: 22px; }
  .sign-builder .sb-metrics span { font-size: 9px; }
  .sign-builder .sb-task-name { font-size: 24px; }
  .sign-builder .sb-steps { gap: 10px; }
  .sign-builder .sb-steps li { font-size: 10px; }
  .sign-builder .sb-steps li > span { width: 20px; height: 20px; flex-basis: 20px; }
  .sign-builder .sb-options { gap: 7px; }
  .sign-builder .sb-option { min-height: 117px; padding-inline: 4px; }
  .sign-builder .sb-option .sb-sign { width: 62px; height: 62px; }
  .sign-builder .sb-option-label { font-size: 9px; }
  .sign-builder .sb-stage-layout { gap: 12px; }
  .sign-builder .sb-stage-title { font-size: 16px; }
  .sign-builder .sb-stage-hint { font-size: 11px; }
  .sign-builder .sb-preview { width: 75px; flex-basis: 75px; }
  .sign-builder .sb-mode { min-height: 104px; padding: 11px 8px; }
  .sign-builder .sb-mode strong { font-size: 11px; }
  .sign-builder .sb-mode span { font-size: 9px; }
  .sign-builder .sb-rules { grid-template-columns: minmax(0, 1fr); gap: 17px; }
  .sb-entry { gap: 12px; padding: 13px; }
  .sb-entry-art { width: 63px; height: 73px; flex-basis: 63px; }
  .sb-entry-copy :is(h2, h3, strong) { font-size: 19px; }
  .sb-entry-copy p { font-size: 10px; }
  .sb-entry-arrow { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .sign-builder *, .sb-entry { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .sign-builder .sb-option:hover:not(:disabled), .sign-builder .sb-button:active:not(:disabled) { transform: none; }
}