:root {
  color-scheme: light;
  --bg: #f3f6fb;
  --card: #ffffff;
  --card-soft: #e6edf8;
  --text: #152238;
  --accent-rgb: 31, 110, 245;
  --accent: rgb(var(--accent-rgb));
  --accent-soft: rgba(var(--accent-rgb), 0.12);
  --muted: #5f6f88;
  --border: #d4ddee;
  --measure-frame-rgb: 31, 110, 245;
  --measure-center-rgb: 122, 92, 250;
  --measure-anchor-rgb: 242, 95, 92;
  --measure-frame: rgb(var(--measure-frame-rgb));
  --measure-center: rgb(var(--measure-center-rgb));
  --measure-anchor: rgb(var(--measure-anchor-rgb));
  --card-shadow: 0 18px 48px rgba(21, 34, 56, 0.08);
  --card-shadow-hover: 0 24px 60px rgba(21, 34, 56, 0.12);
  --panel-shadow: 0 24px 60px rgba(21, 34, 56, 0.12);
  --floating-shadow: 0 20px 36px rgba(21, 34, 56, 0.12);
  --label-shadow: 0 4px 14px rgba(21, 34, 56, 0.12);
  --surface-layer: #ffffff;
  --surface-floating: rgba(255, 255, 255, 0.96);
  --surface-overlay: rgba(255, 255, 255, 0.85);
  --surface-base: #ffffff;
  --keypad-bg: linear-gradient(145deg, #eef3ff, #fff7e6);
  --keypad-border: #d5e0ff;
  --input-bg: rgba(255, 255, 255, 0.8);
  --placeholder-color: rgba(95, 111, 136, 0.7);
  --label-line: rgba(95, 111, 136, 0.35);
  --label-dot: rgba(95, 111, 136, 0.8);
  --callout-label-outline: rgba(255, 255, 255, 0.6);
  font-family: "Inter", "Segoe UI", system-ui, sans-serif;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0f172a;
  --card: #111c2f;
  --card-soft: #1b2944;
  --text: #f5f7ff;
  --accent-rgb: 122, 162, 255;
  --accent: rgb(var(--accent-rgb));
  --accent-soft: rgba(var(--accent-rgb), 0.2);
  --muted: #9aa6c8;
  --border: #23324d;
  --measure-frame-rgb: 122, 162, 255;
  --measure-center-rgb: 180, 150, 255;
  --measure-anchor-rgb: 255, 159, 154;
  --measure-frame: rgb(var(--measure-frame-rgb));
  --measure-center: rgb(var(--measure-center-rgb));
  --measure-anchor: rgb(var(--measure-anchor-rgb));
  --card-shadow: 0 18px 48px rgba(5, 10, 24, 0.65);
  --card-shadow-hover: 0 26px 64px rgba(5, 10, 24, 0.7);
  --panel-shadow: 0 28px 70px rgba(5, 10, 24, 0.75);
  --floating-shadow: 0 24px 48px rgba(3, 8, 22, 0.65);
  --label-shadow: 0 10px 28px rgba(2, 6, 20, 0.65);
  --surface-layer: rgba(21, 32, 54, 0.88);
  --surface-floating: rgba(18, 28, 46, 0.92);
  --surface-overlay: rgba(18, 28, 46, 0.88);
  --surface-base: rgba(20, 29, 46, 0.96);
  --keypad-bg: linear-gradient(145deg, #2b3b66, #111c2f);
  --keypad-border: #4a63a8;
  --input-bg: rgba(18, 28, 46, 0.88);
  --placeholder-color: rgba(154, 166, 200, 0.7);
  --label-line: rgba(108, 123, 156, 0.45);
  --label-dot: rgba(138, 155, 194, 0.82);
  --callout-label-outline: rgba(8, 12, 24, 0.6);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    color-scheme: dark;
    --bg: #0f172a;
    --card: #111c2f;
    --card-soft: #1b2944;
    --text: #f5f7ff;
    --accent-rgb: 122, 162, 255;
    --accent: rgb(var(--accent-rgb));
    --accent-soft: rgba(var(--accent-rgb), 0.2);
    --muted: #9aa6c8;
    --border: #23324d;
    --measure-frame-rgb: 122, 162, 255;
    --measure-center-rgb: 180, 150, 255;
    --measure-anchor-rgb: 255, 159, 154;
    --measure-frame: rgb(var(--measure-frame-rgb));
    --measure-center: rgb(var(--measure-center-rgb));
    --measure-anchor: rgb(var(--measure-anchor-rgb));
    --card-shadow: 0 18px 48px rgba(5, 10, 24, 0.65);
    --card-shadow-hover: 0 26px 64px rgba(5, 10, 24, 0.7);
    --panel-shadow: 0 28px 70px rgba(5, 10, 24, 0.75);
    --floating-shadow: 0 24px 48px rgba(3, 8, 22, 0.65);
    --label-shadow: 0 10px 28px rgba(2, 6, 20, 0.65);
    --surface-layer: rgba(21, 32, 54, 0.88);
    --surface-floating: rgba(18, 28, 46, 0.92);
    --surface-overlay: rgba(18, 28, 46, 0.88);
    --surface-base: rgba(20, 29, 46, 0.96);
    --keypad-bg: linear-gradient(145deg, #2b3b66, #111c2f);
    --keypad-border: #4a63a8;
    --input-bg: rgba(18, 28, 46, 0.88);
    --placeholder-color: rgba(154, 166, 200, 0.7);
    --label-line: rgba(108, 123, 156, 0.45);
    --label-dot: rgba(138, 155, 194, 0.82);
    --callout-label-outline: rgba(8, 12, 24, 0.6);
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  --mobile-keypad-height: 230px;
}

main.app {
  flex: 1;
  max-width: 1080px;
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
  display: flex;
  flex-direction: column;
  gap: clamp(2.75rem, 4vw, 4rem);
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.3rem, 4.8vw, 3.4rem);
}

.hero-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.height-rule {
  background: var(--surface-layer);
  border: 1px solid var(--border);
  border-radius: 1.25rem;
  padding: clamp(1.35rem, 3vw, 2rem) clamp(1.4rem, 4vw, 2.4rem);
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  gap: 0.95rem;
}

.height-rule-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--text);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin: 0;
  align-self: flex-start;
}

.height-rule h2 {
  margin: 0;
  font-size: clamp(1.45rem, 3.5vw, 1.9rem);
}

.height-rule p {
  margin: 0;
  color: var(--muted);
}

.height-rule-list {
  margin: 0;
  padding-left: 1.2rem;
  display: grid;
  gap: 0.45rem;
  color: var(--text);
}

.height-rule-note {
  margin: 0;
  font-style: italic;
  color: var(--muted);
}

.hero-tools {
  display: flex;
  align-items: flex-end;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.unit-toggle {
  margin: 0;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface-layer);
  box-shadow: var(--card-shadow);
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.unit-toggle legend {
  margin: 0;
  padding: 0;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--muted);
}

.unit-toggle-options {
  display: inline-flex;
  gap: 0.4rem;
  align-items: center;
}

.unit-radio {
  position: relative;
  display: inline-flex;
}

.unit-radio input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  width: 1px;
  height: 1px;
}

.unit-radio label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.3rem 0.85rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease, box-shadow 160ms ease;
}

.unit-radio input:checked + label {
  background: rgba(var(--accent-rgb), 0.1);
  color: var(--text);
}

.unit-radio input:focus-visible + label {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.theme-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.35rem 0.9rem 0.35rem 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface-layer);
  box-shadow: var(--card-shadow);
}

.theme-toggle label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--muted);
}

.theme-toggle select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  border: none;
  background: transparent;
  color: var(--text);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.2rem 1.5rem 0.2rem 0.35rem;
  cursor: pointer;
}

.theme-toggle select:focus {
  outline: none;
}

.theme-toggle::after {
  content: "";
  position: absolute;
  width: 0.55rem;
  height: 0.55rem;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  right: 0.85rem;
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
  pointer-events: none;
}

.theme-toggle select::-ms-expand {
  display: none;
}

:root[data-theme="dark"] .theme-toggle {
  box-shadow: var(--floating-shadow);
}

:root[data-theme="dark"] .unit-toggle {
  box-shadow: var(--floating-shadow);
  background: var(--surface-layer);
}

:root[data-theme="dark"] .unit-radio input:checked + label {
  background: rgba(var(--accent-rgb), 0.22);
  color: #f5f7ff;
}

.hero p {
  margin: 0;
  color: var(--muted);
  font-size: clamp(1rem, 2.2vw, 1.15rem);
  max-width: 40rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.measurements {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.measurement-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 2.15rem 2.15rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.35rem;
  box-shadow: var(--card-shadow);
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.measurement-card--full {
  grid-column: 1 / -1;
  padding: 1.85rem 2rem 1.8rem;
  gap: 1rem;
}

.measurement-card-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}

.measurement-card-header--inline {
  align-items: center;
  gap: 1.5rem;
}

.measurement-card-header--inline h3 {
  margin: 0;
  white-space: nowrap;
}

.measurement-card-sub {
  margin: 0;
  font-size: 0.95rem;
  color: var(--muted);
  font-weight: 500;
}

.measurement-card:hover,
.measurement-card:focus-within {
  border-color: rgba(var(--accent-rgb), 0.35);
  box-shadow: var(--card-shadow-hover);
}

.measurement-card h3 {
  margin: 0;
  font-size: 1.35rem;
}

.measurement-card--schematic {
  grid-column: 1 / -1;
  padding: clamp(2rem, 4vw, 2.85rem) clamp(1.8rem, 4.5vw, 3rem) clamp(3rem, 8vw, 4.1rem);
  gap: clamp(1.2rem, 2.4vw, 1.9rem);
}

.measurement-card--schematic .measurement-card-header {
  flex-direction: column;
  align-items: flex-start;
  gap: 0.65rem;
}

.measurement-schematic {
  position: relative;
  border-radius: 24px;
  background: linear-gradient(150deg, rgba(var(--accent-rgb), 0.12), rgba(var(--accent-rgb), 0));
  padding: clamp(1.6rem, 4vw, 2.4rem) clamp(3rem, 16vw, 6.2rem) clamp(3.4rem, 10vw, 5rem) clamp(1.4rem, 4vw, 2.6rem);
  overflow: visible;
  box-shadow: inset 0 0 0 1px rgba(21, 34, 56, 0.04);
}

.measurement-schematic-stage {
  position: relative;
  --schematic-gap: clamp(1.6rem, 4vw, 3rem);
  display: grid;
  grid-template-columns: minmax(280px, 360px) minmax(220px, 1fr);
  column-gap: var(--schematic-gap);
  row-gap: clamp(1.2rem, 3vw, 2rem);
  align-items: center;
  justify-content: center;
  max-width: 780px;
  margin: 0 auto;
  padding: clamp(1.6rem, 4vw, 2.2rem) clamp(1.4rem, 5vw, 2.2rem) clamp(2.1rem, 6vw, 3rem);
}

.measurement-schematic-figure {
  position: relative;
  width: 100%;
  max-width: 360px;
  height: clamp(300px, 46vw, 360px);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: clamp(1.1rem, 2.6vw, 1.8rem);
  margin: 0 auto;
}

.schematic-wall {
  position: relative;
  width: 100%;
  height: 100%;
  max-width: 300px;
  border-left: 3px solid #c1cddc;
  border-bottom: 3px solid #c1cddc;
  border-radius: 0 0 0 18px;
  background: linear-gradient(0deg, rgba(193, 205, 220, 0.12), transparent);
  --anchor-ratio: 0.28;
}

.schematic-floor-label {
  position: absolute;
  left: -2px;
  bottom: -1.3rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.schematic-frame {
  position: absolute;
  left: 50%;
  top: 14%;
  bottom: 22%;
  width: 62%;
  transform: translateX(-50%);
  border: 4px solid rgba(21, 34, 56, 0.32);
  border-radius: 12px;
  background: rgba(148, 167, 194, 0.2);
  --anchor-ratio: 0.28;
  --frame-top-offset: 14%;
  --frame-bottom-offset: 22%;
}

.schematic-callouts {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-start;
  gap: clamp(1rem, 3vw, 1.6rem);
  height: clamp(300px, 46vw, 360px);
}

.schematic-anchor-dot {
  position: absolute;
  top: calc(var(--anchor-ratio, 0.28) * 100%);
  left: 50%;
  transform: translate(-50%, -50%);
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--measure-anchor);
  box-shadow: 0 6px 14px rgba(var(--measure-anchor-rgb), 0.28);
  display: none;
}

.schematic-frame.has-anchor .schematic-anchor-dot {
  display: block;
}

.schematic-label {
  position: absolute;
  right: 100%;
  margin-right: 0.75rem;
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
  background: var(--surface-floating);
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  box-shadow: var(--label-shadow);
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.schematic-label::before {
  content: "";
  position: absolute;
  top: 50%;
  right: calc(-0.75rem - 12px);
  width: 12px;
  height: 2px;
  border-radius: 999px;
  background: var(--label-line);
  transform: translateY(-50%);
}

.schematic-label::after {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--label-dot);
  box-shadow: 0 0 0 1.5px var(--callout-label-outline);
}

.schematic-measure {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--accent);
}

.schematic-measure .schematic-line {
  flex: 1;
  width: 2px;
  min-height: 40px;
  border-radius: 999px;
  background: currentColor;
  margin: 0.4rem 0;
}

.schematic-measure--frame {
  color: var(--measure-frame);
  top: 14%;
  bottom: 22%;
  right: 14%;
}

.schematic-measure--anchor {
  color: var(--measure-anchor);
  top: 14%;
  height: calc((100% - 14% - 22%) * var(--anchor-ratio, 0.28));
  right: 31%;
  display: none;
}

.schematic-measure--anchor .schematic-line {
  min-height: 28px;
  margin: 0.3rem 0;
}

.schematic-wall.has-anchor .schematic-measure--anchor {
  display: flex;
}

.schematic-measure--center {
  color: var(--measure-center);
  bottom: 0;
  height: 58%;
  left: -24px;
}

.schematic-label--top {
  top: 0;
  transform: translate(-0.1rem, -50%);
  color: rgba(var(--measure-frame-rgb), 0.9);
}

.schematic-label--top::after {
  background: rgba(var(--measure-frame-rgb), 0.9);
}

.schematic-label--top::before {
  background: rgba(var(--measure-frame-rgb), 0.45);
}

.schematic-label--center {
  top: 50%;
  color: rgba(var(--measure-center-rgb), 0.92);
}

.schematic-label--center::after {
  background: rgba(var(--measure-center-rgb), 0.92);
}

.schematic-label--center::before {
  background: rgba(var(--measure-center-rgb), 0.45);
}

.schematic-label--anchor {
  top: calc(var(--anchor-ratio, 0.28) * 100%);
  right: auto;
  left: calc(100% + 0.75rem);
  margin-right: 0;
  margin-left: 0.75rem;
  transform: translate(0, -50%);
  color: rgba(var(--measure-anchor-rgb), 0.9);
  display: none;
}

.schematic-label--anchor::after {
  background: rgba(var(--measure-anchor-rgb), 0.9);
}

.schematic-label--anchor::before {
  right: auto;
  left: calc(-0.75rem - 12px);
  background: rgba(var(--measure-anchor-rgb), 0.55);
}

.schematic-frame.has-anchor .schematic-label--anchor {
  display: inline-flex;
}

.schematic-label--bottom {
  bottom: 0;
  transform: translate(-0.1rem, 50%);
  color: rgba(var(--measure-frame-rgb), 0.9);
}

.schematic-label--bottom::after {
  background: rgba(var(--measure-frame-rgb), 0.9);
}

.schematic-label--bottom::before {
  background: rgba(var(--measure-frame-rgb), 0.45);
}

.schematic-cap {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid currentColor;
  background: var(--surface-base);
}

.schematic-callout {
  --pointer-offset: 50%;
  --pointer-gap: clamp(0.45rem, 1vw, 0.75rem);
  --pointer-length: calc(var(--schematic-gap, 2rem) + clamp(0.6rem, 1.6vw, 1.1rem));
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  background: var(--surface-layer);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 0.9rem 1rem 1.05rem;
  box-shadow: var(--floating-shadow);
  width: min(100%, 260px);
}

.schematic-callout::before {
  content: "";
  position: absolute;
  top: var(--pointer-offset);
  transform: translateY(-50%);
  pointer-events: none;
  right: 100%;
  width: var(--pointer-length);
  height: 2px;
  margin-right: var(--pointer-gap);
  background: linear-gradient(90deg, rgba(var(--accent-rgb), 0.75), rgba(var(--accent-rgb), 0));
}

.schematic-callout::after {
  content: "";
  position: absolute;
  top: var(--pointer-offset);
  transform: translateY(-50%);
  pointer-events: none;
  right: calc(100% + var(--pointer-length) + var(--pointer-gap));
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(var(--accent-rgb), 0.75);
  box-shadow: 0 4px 12px rgba(var(--accent-rgb), 0.24);
}

.schematic-callout label {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.schematic-callout label::before {
  content: "";
  display: inline-block;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: rgba(var(--accent-rgb), 0.75);
  box-shadow: 0 0 0 2px var(--callout-label-outline);
}

.schematic-callout--anchor {
  --pointer-offset: 28%;
  border-color: rgba(var(--measure-anchor-rgb), 0.36);
  background: linear-gradient(180deg, rgba(var(--measure-anchor-rgb), 0.14), rgba(var(--measure-anchor-rgb), 0.06));
}

.schematic-callout--anchor::before {
  background: linear-gradient(90deg, rgba(var(--measure-anchor-rgb), 0.75), rgba(var(--measure-anchor-rgb), 0));
}

.schematic-callout--anchor::after {
  background: rgba(var(--measure-anchor-rgb), 0.85);
  box-shadow: 0 4px 12px rgba(var(--measure-anchor-rgb), 0.28);
}

.schematic-callout--anchor label {
  color: rgba(var(--measure-anchor-rgb), 0.85);
}

.schematic-callout--anchor label::before {
  background: rgba(var(--measure-anchor-rgb), 0.9);
  box-shadow: 0 0 0 2px var(--callout-label-outline);
}

.schematic-callout--anchor .unit-tag {
  color: rgba(var(--measure-anchor-rgb), 0.75);
}

.schematic-callout--anchor .input-shell {
  border-color: rgba(var(--measure-anchor-rgb), 0.22);
  background: rgba(var(--measure-anchor-rgb), 0.05);
}

.schematic-callout--anchor .input-shell:focus-within {
  border-color: rgba(var(--measure-anchor-rgb), 0.55);
  box-shadow: 0 0 0 3px rgba(var(--measure-anchor-rgb), 0.18);
}

.schematic-callout--center {
  --pointer-offset: 72%;
  border-color: rgba(var(--measure-center-rgb), 0.36);
  background: linear-gradient(180deg, rgba(var(--measure-center-rgb), 0.14), rgba(var(--measure-center-rgb), 0.06));
}

.schematic-callout--center::before {
  background: linear-gradient(90deg, rgba(var(--measure-center-rgb), 0.75), rgba(var(--measure-center-rgb), 0));
}

.schematic-callout--center::after {
  background: rgba(var(--measure-center-rgb), 0.85);
  box-shadow: 0 4px 12px rgba(var(--measure-center-rgb), 0.28);
}

.schematic-callout--center label {
  color: rgba(var(--measure-center-rgb), 0.85);
}

.schematic-callout--center label::before {
  background: rgba(var(--measure-center-rgb), 0.9);
  box-shadow: 0 0 0 2px var(--callout-label-outline);
}

.schematic-callout--center .unit-tag {
  color: rgba(var(--measure-center-rgb), 0.75);
}

.schematic-callout--center .input-shell {
  border-color: rgba(var(--measure-center-rgb), 0.22);
  background: rgba(var(--measure-center-rgb), 0.05);
}

.schematic-callout--center .input-shell:focus-within {
  border-color: rgba(var(--measure-center-rgb), 0.55);
  box-shadow: 0 0 0 3px rgba(var(--measure-center-rgb), 0.18);
}

.schematic-callout--frame {
  --pointer-offset: 50%;
  border-color: rgba(var(--measure-frame-rgb), 0.36);
  background: linear-gradient(180deg, rgba(var(--measure-frame-rgb), 0.14), rgba(var(--measure-frame-rgb), 0.06));
}

.schematic-callout--frame::before {
  background: linear-gradient(90deg, rgba(var(--measure-frame-rgb), 0.75), rgba(var(--measure-frame-rgb), 0));
}

.schematic-callout--frame::after {
  background: rgba(var(--measure-frame-rgb), 0.85);
  box-shadow: 0 4px 12px rgba(var(--measure-frame-rgb), 0.28);
}

.schematic-callout--frame label {
  color: rgba(var(--measure-frame-rgb), 0.85);
}

.schematic-callout--frame label::before {
  background: rgba(var(--measure-frame-rgb), 0.9);
  box-shadow: 0 0 0 2px var(--callout-label-outline);
}

.schematic-callout--frame .unit-tag {
  color: rgba(var(--measure-frame-rgb), 0.75);
}

.schematic-callout--frame .input-shell {
  border-color: rgba(var(--measure-frame-rgb), 0.22);
  background: rgba(var(--measure-frame-rgb), 0.05);
}

.schematic-callout--frame .input-shell:focus-within {
  border-color: rgba(var(--measure-frame-rgb), 0.55);
  box-shadow: 0 0 0 3px rgba(var(--measure-frame-rgb), 0.18);
}

.measurement-input--compact {
  width: 100%;
  max-width: none;
}

@media (max-width: 900px) {
  .measurement-card--schematic {
    padding: 1.85rem 1.5rem 2.4rem;
    gap: 1.2rem;
  }

  .measurement-schematic {
    padding: 1.45rem 1.35rem 1.85rem;
  }

  .measurement-schematic-stage {
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 1.5rem;
    padding: 1.6rem 1rem 2.2rem;
  }

  .measurement-schematic-figure {
    width: min(100%, 360px);
    height: 300px;
  }

  .schematic-wall {
    height: 100%;
  }

  .schematic-callouts {
    width: 100%;
    height: auto;
    gap: 1rem;
  }

  .schematic-callout {
    width: 100%;
  }

  .schematic-callout::before,
  .schematic-callout::after {
    display: none;
  }
}

.measurement-figure {
  padding: 20px;
  position: relative;
  border-radius: 18px;
  background: linear-gradient(150deg, rgba(var(--accent-rgb), 0.08), rgba(var(--accent-rgb), 0));
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.measurement-figure-frame {
  min-width: 220px;
  height: 110px;
  border-radius: 14px;
  border: 3px solid rgba(21, 34, 56, 0.35);
  background: rgba(148, 167, 194, 0.14);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.measurement-figure-frame--small {
  min-width: auto;
  width: 100px;
  height: 50px;
}

.measurement-figure-container {
  height: 70%;
  display: flex;
  justify-content: center;
}

.measurement-figure-guide {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--accent);
}

.guide-line {
  width: 2px;
  background: var(--accent);
  flex: 1;
  border-radius: 999px;
}

.guide-cap {
  width: 16px;
  border-radius: 999px;
  border: 1px solid var(--accent);
}

.measurement-center {
  height: 100%;
  padding-top: 25px;
}

.measurement-wall-container {
  height: 110px;
}

.measurement-anchor {
  display: flex;
  flex-direction: column;
  height: 40px;
}

.measurement-anchor-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 6px 18px rgba(var(--accent-rgb), 0.28);
  flex-shrink: 0;
}

.input-shell {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 0.85rem 1rem;
  transition: border-color 160ms ease, box-shadow 160ms ease;
  position: relative;
}

.input-shell:focus-within {
  border-color: rgba(var(--accent-rgb), 0.5);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.measurement-input {
  max-width: 260px;
}

.measurement-card--full .measurement-input {
  max-width: 320px;
}

.input-shell input {
  flex: 1;
  background: transparent;
  border: none;
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text);
  min-width: 0;
}

.input-shell input:focus {
  outline: none;
}

.input-shell input::placeholder {
  color: var(--placeholder-color);
}

.mobile-keypad {
  margin: 0 auto;
  padding: 1rem 1.25rem 1.2rem;
  border: 1px solid var(--keypad-border, var(--border));
  border-radius: 22px;
  background: var(--keypad-bg, var(--card));
  box-shadow: var(--floating-shadow);
  position: fixed;
  left: 50%;
  transform: translate(-50%, 32px);
  bottom: calc(env(safe-area-inset-bottom, 0px) + 0.85rem);
  z-index: 60;
  width: min(420px, calc(100% - 2rem));
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: transform 220ms ease, opacity 220ms ease;
}

.mobile-keypad.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

.mobile-keypad[hidden] {
  display: none;
}

@media (prefers-reduced-motion: reduce) {
  .mobile-keypad {
    transition: none;
  }
}

body.has-mobile-keypad {
  padding-bottom: calc(var(--mobile-keypad-height) + 2rem);
}

body.has-mobile-keypad main.app {
  padding-bottom: calc(4rem + 0.15 * var(--mobile-keypad-height));
}

@media (min-width: 769px) {
  .mobile-keypad {
    display: none !important;
  }
  body.has-mobile-keypad {
    padding-bottom: 0;
  }
  body.has-mobile-keypad main.app {
    padding-bottom: 4rem;
  }
}

.mobile-keypad-label {
  margin: 0 0 0.85rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--muted);
}

.mobile-keypad-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.65rem;
}

.mobile-keypad-key {
  border: none;
  border-radius: 16px;
  padding: 0.85rem 0;
  font-size: 1.2rem;
  font-weight: 600;
  background: var(--surface-layer);
  color: var(--text);
  box-shadow: inset 0 0 0 1px rgba(var(--accent-rgb), 0.08);
  cursor: pointer;
  transition: transform 120ms ease, background 120ms ease, box-shadow 120ms ease;
  touch-action: manipulation;
}

.mobile-keypad-key:active {
  transform: translateY(1px);
  background: rgba(var(--accent-rgb), 0.15);
  box-shadow: inset 0 0 0 1px rgba(var(--accent-rgb), 0.2);
}

.mobile-keypad-key:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.mobile-keypad-key--icon {
  font-size: 1rem;
}

.mobile-keypad-key--wide {
  grid-column: span 2;
}

.mobile-input-caret {
  position: absolute;
  width: 2px;
  height: 1.9rem;
  background: var(--accent);
  border-radius: 999px;
  top: 50%;
  transform: translateY(-50%);
  animation: mobileCaretBlink 1s steps(2, start) infinite;
  pointer-events: none;
}

@keyframes mobileCaretBlink {
  0% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

.unit-tag {
  font-size: 1rem;
  font-weight: 600;
  color: var(--muted);
  background: none;
  border: none;
  padding: 0;
  line-height: 1;
  font-family: inherit;
}

.unit-tag--toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
  user-select: none;
  padding: 0.2rem 0.75rem;
  border-radius: 999px;
  border: 1px solid rgba(var(--accent-rgb), 0.3);
  background: rgba(var(--accent-rgb), 0.08);
  color: var(--text);
  transition: background 140ms ease, color 140ms ease, border-color 140ms ease;
  appearance: none;
}

.unit-tag--toggle::after {
  content: "⇄";
  font-size: 0.9rem;
  opacity: 0.7;
}

.unit-tag--toggle:hover,
.unit-tag--toggle:focus-visible {
  background: rgba(var(--accent-rgb), 0.16);
  border-color: rgba(var(--accent-rgb), 0.65);
  color: var(--text);
}

.unit-tag--toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.output-grid {
  display: grid;
  grid-template-columns: minmax(320px, 1.3fr) minmax(280px, 1fr);
  grid-template-areas: "result presets";
  gap: 2.5rem;
  align-items: start;
}

.result-panel {
  grid-area: result;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 26px;
  padding: 2.75rem 3rem;
  box-shadow: var(--panel-shadow);
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.result-label {
  text-transform: uppercase;
  font-size: 0.95rem;
  letter-spacing: 0.14em;
  color: var(--muted);
  opacity: 0.9;
}

.result-value {
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.05;
  color: var(--text);
}

.result-value.is-placeholder {
  font-size: clamp(1.5rem, 3.2vw, 2rem);
  font-weight: 500;
  color: var(--muted);
}

.result-value.is-error {
  font-size: clamp(1.5rem, 3.2vw, 2rem);
  font-weight: 500;
  color: #c21f3a;
}

.result-secondary {
  font-size: 1rem;
  color: var(--muted);
  max-width: 34rem;
  line-height: 1.55;
}

.presets-card {
  grid-area: presets;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 26px;
  padding: 2.25rem 2rem;
  box-shadow: var(--panel-shadow);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.presets-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.presets-header h3 {
  margin: 0;
  font-size: 1.2rem;
}

.preset-new-button {
  background: rgba(var(--accent-rgb), 0.08);
  border: 1px solid rgba(var(--accent-rgb), 0.28);
  color: var(--accent);
  border-radius: 999px;
  padding: 0.4rem 0.9rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: background 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.preset-new-button:hover,
.preset-new-button:focus-visible {
  background: rgba(var(--accent-rgb), 0.14);
  border-color: rgba(var(--accent-rgb), 0.4);
  outline: none;
  transform: translateY(-1px);
}

.preset-form {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.preset-label {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--muted);
}

.preset-form-row {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.preset-form-row input {
  flex: 1;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0.65rem 0.85rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  min-width: 0;
}

.preset-form-row input:focus {
  border-color: rgba(var(--accent-rgb), 0.5);
  box-shadow: 0 0 0 3px var(--accent-soft);
  outline: none;
}

.preset-save-button {
  background: var(--accent);
  color: #ffffff;
  border: none;
  border-radius: 14px;
  padding: 0.6rem 1.1rem;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: background 160ms ease, transform 160ms ease;
}

.preset-save-button:hover,
.preset-save-button:focus-visible {
  background: #1554c2;
  transform: translateY(-1px);
  outline: none;
}

.preset-form-hint {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.preset-empty {
  margin: 0;
  font-size: 0.95rem;
  color: var(--muted);
  font-style: italic;
}

.preset-undo {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  padding: 0.75rem 1rem;
  border-radius: 16px;
  border: 1px solid rgba(var(--accent-rgb), 0.28);
  background: rgba(var(--accent-rgb), 0.1);
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 600;
}

.preset-undo[hidden] {
  display: none;
}

.preset-undo-button {
  border: none;
  background: var(--accent);
  color: #ffffff;
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 160ms ease, transform 160ms ease;
}

.preset-undo-button:hover,
.preset-undo-button:focus-visible {
  background: #1554c2;
  transform: translateY(-1px);
  outline: none;
}

.preset-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.preset-item {
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 0.85rem 1rem;
  background: var(--surface-overlay);
  display: flex;
  align-items: center;
  gap: 0.85rem;
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.preset-item.is-active {
  border-color: rgba(var(--accent-rgb), 0.45);
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}

.preset-item-main {
  flex: 1;
  border: none;
  background: transparent;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.35rem;
  padding: 0;
  cursor: pointer;
  color: inherit;
  text-align: left;
}

.preset-item-main:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-soft);
  border-radius: 14px;
  padding: 0.2rem 0.45rem;
  margin-left: -0.45rem;
  margin-right: -0.45rem;
}

.preset-item-name {
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
}

.preset-item-meta {
  font-size: 0.85rem;
  color: var(--muted);
}

.preset-item-actions {
  display: flex;
  gap: 0.4rem;
}

.preset-edit-button,
.preset-delete-button {
  border: 1px solid var(--border);
  background: var(--surface-base);
  color: var(--muted);
  border-radius: 999px;
  padding: 0.3rem 0.7rem;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.preset-edit-button:hover,
.preset-edit-button:focus-visible,
.preset-delete-button:hover,
.preset-delete-button:focus-visible {
  border-color: rgba(var(--accent-rgb), 0.4);
  color: var(--accent);
  outline: none;
  transform: translateY(-1px);
}

.preset-delete-button {
  color: #c21f3a;
  border-color: rgba(194, 31, 58, 0.28);
}

.preset-delete-button.is-confirm {
  background: rgba(194, 31, 58, 0.12);
  border-color: rgba(194, 31, 58, 0.48);
  color: #8f152b;
}

.preset-delete-button.is-confirm:hover,
.preset-delete-button.is-confirm:focus-visible {
  color: #5f0f1d;
  border-color: rgba(194, 31, 58, 0.58);
}

.preset-delete-button:hover,
.preset-delete-button:focus-visible {
  color: #8f152b;
  border-color: rgba(194, 31, 58, 0.38);
}

.presets-card.is-editing .preset-new-button {
  color: #ffffff;
  background: rgba(194, 31, 58, 0.85);
  border-color: rgba(194, 31, 58, 0.85);
}

.presets-card.is-editing .preset-new-button:hover,
.presets-card.is-editing .preset-new-button:focus-visible {
  background: rgba(194, 31, 58, 0.92);
  border-color: rgba(194, 31, 58, 0.92);
}

:root[data-theme="dark"] .preset-new-button {
  background: rgba(var(--accent-rgb), 0.18);
  border-color: rgba(var(--accent-rgb), 0.35);
}

:root[data-theme="dark"] .preset-new-button:hover,
:root[data-theme="dark"] .preset-new-button:focus-visible {
  background: rgba(var(--accent-rgb), 0.28);
  border-color: rgba(var(--accent-rgb), 0.45);
}

:root[data-theme="dark"] .preset-delete-button {
  color: #ff9aa6;
  border-color: rgba(255, 154, 166, 0.4);
}

:root[data-theme="dark"] .preset-undo {
  border-color: rgba(var(--accent-rgb), 0.38);
  background: rgba(var(--accent-rgb), 0.24);
}

:root[data-theme="dark"] .preset-undo-button {
  background: rgba(var(--accent-rgb), 1);
  color: #0f172a;
}

:root[data-theme="dark"] .preset-undo-button:hover,
:root[data-theme="dark"] .preset-undo-button:focus-visible {
  background: rgba(var(--accent-rgb), 0.9);
}

:root[data-theme="dark"] .preset-delete-button:hover,
:root[data-theme="dark"] .preset-delete-button:focus-visible {
  color: #ffb6bd;
  border-color: rgba(255, 154, 166, 0.55);
}

:root[data-theme="dark"] .preset-delete-button.is-confirm {
  background: rgba(255, 154, 166, 0.32);
  border-color: rgba(255, 154, 166, 0.7);
  color: #ffe6e9;
}

:root[data-theme="dark"] .preset-delete-button.is-confirm:hover,
:root[data-theme="dark"] .preset-delete-button.is-confirm:focus-visible {
  color: #fff2f4;
  border-color: rgba(255, 154, 166, 0.8);
}

:root[data-theme="dark"] .presets-card.is-editing .preset-new-button {
  color: #ffe6e9;
  background: rgba(255, 154, 166, 0.28);
  border-color: rgba(255, 154, 166, 0.5);
}

:root[data-theme="dark"] .presets-card.is-editing .preset-new-button:hover,
:root[data-theme="dark"] .presets-card.is-editing .preset-new-button:focus-visible {
  background: rgba(255, 154, 166, 0.36);
  border-color: rgba(255, 154, 166, 0.6);
}

.faq-section {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.faq-section h2,
.faq-section h3 {
  margin: 0;
}

.faq-section h3 {
  color: var(--muted);
  font-size: 1.15rem;
  font-weight: 600;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--card);
  box-shadow: var(--card-shadow);
  padding: 0.4rem 1.15rem;
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.faq-item:hover,
.faq-item:focus-within {
  border-color: rgba(var(--accent-rgb), 0.35);
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-1px);
}

.faq-item[open] {
  border-color: rgba(var(--accent-rgb), 0.35);
  box-shadow: var(--card-shadow-hover);
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text);
  padding: 0.85rem 0;
  outline: none;
  position: relative;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "";
  width: 0.65rem;
  height: 0.65rem;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  transform: rotate(45deg);
  margin-left: auto;
  transition: transform 160ms ease, border-color 160ms ease;
}

.faq-item[open] summary::after {
  transform: rotate(-135deg);
  border-color: rgba(var(--accent-rgb), 0.85);
}

.faq-item summary:focus-visible {
  box-shadow: 0 0 0 3px var(--accent-soft);
  border-radius: 12px;
}

.faq-item p {
  margin: 0;
  padding: 0 0 1rem;
  color: var(--muted);
  line-height: 1.65;
  font-size: 0.98rem;
}

.faq-item[open] p {
  padding-top: 0.2rem;
}

:root[data-theme="dark"] .faq-item {
  background: var(--surface-layer);
}

:root[data-theme="dark"] .faq-item summary::after {
  border-color: rgba(154, 166, 200, 0.85);
}

:root[data-theme="dark"] .faq-item[open] summary::after {
  border-color: rgba(var(--accent-rgb), 0.95);
}

:root[data-theme="dark"] .faq-item p {
  color: rgba(202, 211, 235, 0.82);
}

.recommended-tools {
  border: 1px solid var(--border);
  border-radius: 26px;
  padding: clamp(1.85rem, 4vw, 2.8rem);
  background: var(--card);
  box-shadow: var(--panel-shadow);
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.recommended-tools-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.recommended-tools-subtitle {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 1rem;
  max-width: 48ch;
}

.recommended-tools-note {
  margin: 0;
  font-size: 0.92rem;
  font-weight: 600;
  color: rgba(var(--accent-rgb), 0.9);
  background: rgba(var(--accent-rgb), 0.12);
  border-radius: 999px;
  padding: 0.45rem 0.95rem;
}

.recommended-tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.2rem;
}

.tool-card {
  border: 1px solid rgba(var(--accent-rgb), 0.2);
  border-radius: 22px;
  padding: 1.35rem 1.4rem 1.6rem;
  background: linear-gradient(135deg, rgba(var(--accent-rgb), 0.12), rgba(var(--accent-rgb), 0.03));
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  min-height: 100%;
}

.tool-card-tag {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(var(--accent-rgb), 0.85);
}

.tool-card h3 {
  margin: 0;
  font-size: 1.2rem;
}

.tool-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
  flex: 1;
}

.tool-card-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.5rem;
  padding: 0.65rem 1.05rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  color: var(--surface-base);
  background: var(--accent);
  box-shadow: 0 12px 24px rgba(var(--accent-rgb), 0.28);
  transition: transform 160ms ease, box-shadow 160ms ease, opacity 160ms ease;
}

.tool-card-link:hover,
.tool-card-link:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 16px 34px rgba(var(--accent-rgb), 0.35);
  opacity: 0.95;
}

.tool-card-link:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-soft), 0 16px 34px rgba(var(--accent-rgb), 0.3);
}

.recommended-tools-disclaimer {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted);
  text-align: center;
  opacity: 0.85;
}

:root[data-theme="dark"] .recommended-tools {
  background: var(--surface-layer);
}

:root[data-theme="dark"] .tool-card {
  background: linear-gradient(135deg, rgba(var(--accent-rgb), 0.28), rgba(var(--accent-rgb), 0.08));
  border-color: rgba(var(--accent-rgb), 0.35);
}

:root[data-theme="dark"] .tool-card-link {
  color: #020915;
}

footer {
  text-align: center;
  font-size: 0.9rem;
  color: var(--muted);
  padding: 1.75rem 1rem 2rem;
}

@media (max-width: 960px) {
  .output-grid {
    grid-template-columns: 1fr;
    grid-template-areas:
      "result"
      "presets";
    gap: 2rem;
  }

  .result-panel {
    min-height: auto;
  }

  .preset-form-row {
    flex-direction: column;
    align-items: stretch;
  }

  .preset-save-button {
    width: 100%;
  }
}

@media (max-width: 640px) {
  main.app {
    padding: 2.5rem 1rem 3.25rem;
  }

  .hero-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .hero-tools {
    width: 100%;
    justify-content: flex-start;
  }

  .measurements {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .measurement-card {
    padding: 1.75rem 1.5rem;
    gap: 1rem;
  }

  .measurement-figure {
    height: 150px;
  }

  .input-shell {
    padding: 0.75rem 0.85rem;
  }

  .result-panel {
    padding: 2rem 1.75rem;
  }

  .recommended-tools {
    padding: 1.5rem 1.25rem 2rem;
  }

  .recommended-tools-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.6rem;
  }

  .recommended-tools-note {
    align-self: stretch;
    text-align: center;
  }

  .recommended-tools-grid {
    grid-template-columns: 1fr;
  }
}