:root {
  --room-cyan: #60d8ff;
  --room-blue: #6e8cff;
  --room-violet: #b98cff;
  --room-green: #6ee78b;
  --room-amber: #f4c761;
  --room-red: #ff5c68;
}

.room-clap-page {
  display: grid;
  gap: 12px;
  align-content: start;
}


.room-clap-page [hidden],
.results-area[hidden],
#translationSeedArea[hidden] {
  display: none !important;
}

.room-clap-page button,
.room-clap-page input,
.room-clap-page textarea {
  font: inherit;
}

.room-clap-page button {
  -webkit-tap-highlight-color: transparent;
}

.room-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(250px, 0.75fr);
  gap: clamp(18px, 4vw, 46px);
  align-items: center;
  overflow: hidden;
  position: relative;
}

.room-hero::before {
  content: "";
  position: absolute;
  inset: auto -100px -140px auto;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(96,216,255,0.14), transparent 68%);
  pointer-events: none;
}

.room-kicker,
.section-label,
.result-overline {
  margin: 0 0 8px;
  color: var(--room-green);
  font-size: 11px;
  font-weight: 950;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.room-title-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  flex-wrap: wrap;
}

.room-beta-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 20px;
  margin-top: 4px;
  padding: 3px 7px;
  border: 1px solid rgba(244,199,97,0.42);
  border-radius: 999px;
  background: rgba(244,199,97,0.13);
  color: #ffd57d;
  font-size: 9px;
  font-weight: 950;
  letter-spacing: .1em;
  line-height: 1;
  text-transform: uppercase;
}

.beta-note {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  max-width: 760px;
  margin-top: 14px;
  padding: 10px 12px;
  border: 1px solid rgba(244,199,97,0.22);
  border-radius: 14px;
  background: rgba(244,199,97,0.07);
  color: #f0dba8;
  font-size: 12px;
  font-weight: 760;
  line-height: 1.5;
}

.beta-note strong {
  flex: 0 0 auto;
  color: #ffd57d;
  font-size: 10px;
  font-weight: 950;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.room-hero h1 {
  margin: 0;
  font-size: clamp(42px, 7vw, 78px);
  line-height: 0.92;
  letter-spacing: -0.075em;
}

.room-intro {
  max-width: 760px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: clamp(15px, 2vw, 18px);
  line-height: 1.55;
}

.privacy-note {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  color: #c7ced7;
  font-size: 12px;
  font-weight: 800;
}

.privacy-note span {
  color: var(--room-green);
  font-size: 9px;
  text-shadow: 0 0 12px rgba(110,231,139,0.75);
}

.hero-visual {
  position: relative;
  min-height: 240px;
  display: grid;
  place-items: center;
}

.hero-pulse {
  position: absolute;
  width: 90px;
  height: 90px;
  border: 2px solid rgba(96,216,255,0.48);
  border-radius: 50%;
  box-shadow: 0 0 26px rgba(96,216,255,0.08);
}

.hero-pulse-1 { width: 92px; height: 92px; opacity: 0.95; }
.hero-pulse-2 { width: 152px; height: 152px; opacity: 0.58; }
.hero-pulse-3 { width: 218px; height: 218px; opacity: 0.28; }

.hero-clap-mark {
  position: relative;
  width: 58px;
  height: 72px;
  transform: rotate(-12deg);
}

.hero-clap-mark::before,
.hero-clap-mark::after,
.hero-clap-mark span,
.hero-clap-mark i {
  content: "";
  position: absolute;
  display: block;
  border-radius: 999px;
  background: linear-gradient(180deg, #fff, #9aeaff);
  box-shadow: 0 0 18px rgba(96,216,255,0.38);
}

.hero-clap-mark::before { width: 12px; height: 58px; left: 13px; top: 8px; transform: rotate(-11deg); }
.hero-clap-mark::after { width: 12px; height: 62px; right: 13px; top: 4px; transform: rotate(14deg); }
.hero-clap-mark span { width: 10px; height: 44px; left: 0; top: 21px; transform: rotate(-26deg); }
.hero-clap-mark i { width: 10px; height: 46px; right: 0; top: 17px; transform: rotate(29deg); }

.measurement-console {
  padding: clamp(18px, 3vw, 28px);
}

.console-head,
.summary-head,
.visual-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.console-head h2,
.summary-head h2,
.visual-head h2,
.room-guide h2 {
  margin: 0;
  font-size: clamp(23px, 3.1vw, 34px);
  line-height: 1.05;
  letter-spacing: -0.05em;
}

.step-counter,
.quality-badge {
  flex: 0 0 auto;
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 7px 11px;
  border-radius: 999px;
  border: 1px solid rgba(96,216,255,0.24);
  color: var(--room-cyan);
  background: rgba(96,216,255,0.07);
  font-size: 11px;
  font-weight: 950;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.measurement-stage {
  min-height: 330px;
  margin-top: 18px;
  padding: clamp(22px, 4vw, 44px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  border: 1px solid var(--line-soft);
  border-radius: 16px;
  background:
    radial-gradient(circle at center, rgba(96,216,255,0.06), transparent 48%),
    linear-gradient(180deg, rgba(12,16,21,0.9), rgba(15,19,24,0.96));
  overflow: hidden;
  position: relative;
}

.measurement-stage.is-listening .stage-ring-a,
.measurement-stage.is-counting .stage-ring-a {
  animation: roomPulse 1.5s ease-out infinite;
}

.measurement-stage.is-listening .stage-ring-b,
.measurement-stage.is-counting .stage-ring-b {
  animation: roomPulse 1.5s 0.55s ease-out infinite;
}

.measurement-stage.is-captured .stage-core {
  animation: roomFlash 0.7s ease;
}

.stage-icon {
  position: relative;
  width: 110px;
  height: 110px;
  margin-bottom: 18px;
}

.stage-ring,
.stage-core {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
}

.stage-ring {
  width: 84px;
  height: 84px;
  border: 1px solid rgba(96,216,255,0.38);
  opacity: 0.75;
}

.stage-ring-b { width: 106px; height: 106px; opacity: 0.38; }

.stage-core {
  width: 50px;
  height: 50px;
  border: 1px solid rgba(255,255,255,0.16);
  background:
    radial-gradient(circle at 35% 32%, rgba(255,255,255,0.95), rgba(96,216,255,0.88) 18%, rgba(55,91,127,0.9) 48%, #161b22 72%);
  box-shadow: 0 0 28px rgba(96,216,255,0.18);
}

.stage-eyebrow {
  margin: 0 0 8px;
  color: var(--room-cyan);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.stage-title {
  margin: 0;
  max-width: 780px;
  font-size: clamp(25px, 4vw, 42px);
  line-height: 1.06;
  letter-spacing: -0.055em;
}

.stage-copy {
  max-width: 690px;
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.55;
}

.stage-hint {
  min-height: 20px;
  margin: 18px 0 0;
  color: var(--dim);
  font-size: 12px;
  line-height: 1.45;
}

.countdown {
  margin: 18px 0 0;
  color: #fff;
  font-size: clamp(68px, 14vw, 120px);
  line-height: 0.8;
  font-weight: 1000;
  letter-spacing: -0.08em;
  text-shadow: 0 0 34px rgba(96,216,255,0.38);
}

.level-panel,
.progress-track {
  width: min(520px, 100%);
  margin-top: 22px;
}

.level-track,
.progress-track {
  height: 10px;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  background: #090c10;
}

.level-track span,
.progress-track span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  transition: width 0.08s linear;
}

.level-track span {
  background: linear-gradient(90deg, var(--room-green), var(--room-amber), var(--room-red));
}

.level-panel.is-noise-check .level-track span {
  background: linear-gradient(90deg, var(--room-cyan), var(--room-green));
}

.level-panel.is-noise-check .level-labels strong {
  color: #d9f7ff;
}

.progress-track span {
  background: linear-gradient(90deg, var(--room-cyan), var(--room-violet));
  transition: width 0.12s linear;
}

.level-labels {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-top: 7px;
  color: var(--dim);
  font-size: 11px;
  font-weight: 850;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.level-labels strong { color: var(--muted); }

.console-actions,
.result-actions {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.primary-button,
.secondary-button,
.test-log-actions button {
  min-height: 44px;
  border-radius: 12px;
  padding: 10px 18px;
  border: 1px solid var(--line);
  color: #fff;
  font-weight: 900;
  cursor: pointer;
  transition: transform 0.14s ease, border-color 0.14s ease, filter 0.14s ease;
}

.primary-button {
  border-color: rgba(96,216,255,0.52);
  background: linear-gradient(180deg, #1b8ec4, #0f5e8d);
  box-shadow: 0 10px 30px rgba(21,124,177,0.24), inset 0 1px 0 rgba(255,255,255,0.16);
}

.secondary-button,
.test-log-actions button {
  background: #11161c;
}

.save-image-button {
  border-color: rgba(255, 92, 92, 0.72);
  background: linear-gradient(180deg, #d84e4e, #9f2929);
  box-shadow: 0 10px 24px rgba(190, 55, 55, 0.22), inset 0 1px 0 rgba(255,255,255,0.14);
}

.primary-button:hover,
.secondary-button:hover,
.test-log-actions button:hover {
  transform: translateY(-1px);
  filter: brightness(1.07);
}

.primary-button:disabled,
.secondary-button:disabled {
  opacity: 0.55;
  cursor: wait;
  transform: none;
}

.clap-progress {
  display: flex;
  justify-content: center;
  gap: 9px;
  margin-top: 14px;
}

.clap-progress span {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--line-soft);
  color: var(--dim);
  background: #10141a;
  font-size: 12px;
  font-weight: 950;
}

.clap-progress span.is-current {
  color: #fff;
  border-color: var(--room-cyan);
  box-shadow: 0 0 0 4px rgba(96,216,255,0.08);
}

.clap-progress span.is-complete {
  color: #08110c;
  border-color: var(--room-green);
  background: var(--room-green);
}

.error-panel {
  margin-top: 14px;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid rgba(255,92,104,0.4);
  background: rgba(255,92,104,0.08);
}

.error-panel strong { color: #ff9ca4; }
.error-panel p { margin: 5px 0 0; color: var(--muted); line-height: 1.5; }

.results-area {
  display: grid;
  gap: 12px;
}

.results-summary {
  overflow: hidden;
  position: relative;
}

.results-summary::after {
  content: "";
  position: absolute;
  width: 300px;
  height: 300px;
  right: -150px;
  top: -190px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(110,231,139,0.13), transparent 70%);
  pointer-events: none;
}

.result-hero-line {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 20px;
  align-items: end;
  margin-top: 22px;
  padding: 22px 0;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.result-hero-line h3 {
  margin: 0;
  font-size: clamp(35px, 6vw, 64px);
  line-height: 0.95;
  letter-spacing: -0.065em;
}

.result-hero-line p:not(.result-overline) {
  max-width: 720px;
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.5;
}

.decay-readout {
  min-width: 205px;
  text-align: right;
}

.decay-readout > span {
  display: block;
  color: var(--dim);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.decay-readout strong {
  display: block;
  margin-top: 5px;
  color: var(--room-cyan);
  font-size: clamp(28px, 4vw, 43px);
  letter-spacing: -0.06em;
}

.decay-readout b { font-weight: 950; }
.decay-readout i { font-style: normal; font-size: 0.42em; color: var(--muted); }

.result-card-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.result-card {
  min-height: 138px;
  padding: 16px;
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  background: rgba(10,14,18,0.48);
}

.result-card > span {
  display: block;
  color: var(--dim);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.result-card strong {
  display: block;
  margin-top: 9px;
  color: #fff;
  font-size: 21px;
  line-height: 1.05;
  letter-spacing: -0.035em;
}

.result-card small {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  line-height: 1.45;
}

.visual-grid,
.interpretation-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(330px, 0.82fr);
  gap: 12px;
}

.secondary-visual-grid {
  grid-template-columns: minmax(0, 1.08fr) minmax(330px, 0.92fr);
}

.visual-card {
  min-width: 0;
}

.visual-head p:not(.section-label) {
  max-width: 680px;
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.curve-legend {
  display: flex;
  justify-content: flex-end;
  gap: 7px 12px;
  flex-wrap: wrap;
  color: var(--dim);
  font-size: 10px;
  font-weight: 850;
  text-transform: uppercase;
}

.curve-legend span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.curve-legend i {
  width: 18px;
  height: 3px;
  display: inline-block;
  border-radius: 999px;
  background: #fff;
}

.legend-clap-1 { opacity: 0.36; }
.legend-clap-2 { opacity: 0.52; }
.legend-clap-3 { opacity: 0.7; }
.curve-legend .legend-average { height: 4px; background: var(--room-cyan); }

.chart-shell {
  position: relative;
  min-height: 300px;
  margin-top: 18px;
  padding: 12px;
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  background: #0a0e13;
  overflow: hidden;
}

.result-canvas {
  display: block;
  width: 100%;
  height: 280px;
}

.reflection-shell,
.reflection-shell .result-canvas {
  min-height: 240px;
  height: 240px;
}

.chart-axis-label,
.chart-marker-label {
  position: absolute;
  z-index: 2;
  color: rgba(216,224,233,0.5);
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  pointer-events: none;
}

.chart-axis-level {
  left: 9px;
  top: 50%;
  transform: rotate(-90deg) translateY(-50%);
  transform-origin: left top;
}

.chart-axis-time { right: 18px; bottom: 7px; }
.chart-axis-reflection {
  right: 7px;
  top: 50%;
  transform: rotate(90deg) translateY(-50%);
  transform-origin: right top;
  color: rgba(110,231,139,0.6);
}
.chart-marker-label { right: 56px; top: 74%; color: rgba(244,199,97,0.78); }

.visual-note {
  margin: 13px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}


.band-panel-in-response {
  margin-top: 14px;
  padding: 14px;
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  background: rgba(8,12,16,0.42);
}

.band-panel-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: end;
}

.band-panel-head h3 {
  margin: 4px 0 0;
  color: #fff;
  font-size: clamp(20px, 3vw, 28px);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.band-panel-head p:not(.section-label) {
  max-width: 560px;
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.band-panel-head .usable-range {
  min-width: 190px;
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
  justify-content: flex-end;
  text-align: right;
}

.band-panel-in-response .band-list {
  margin-top: 16px;
}

.band-list {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.band-row {
  display: grid;
  grid-template-columns: 70px minmax(100px, 1fr) minmax(112px, auto);
  gap: 10px;
  align-items: center;
}

.band-name {
  color: #dfe6ed;
  font-size: 12px;
  font-weight: 900;
}

.band-name i { color: var(--dim); font-style: normal; font-size: 9px; }

.band-track {
  height: 10px;
  overflow: hidden;
  border-radius: 999px;
  border: 1px solid var(--line-soft);
  background: #0b0f14;
}

.band-track span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--room-green), var(--room-cyan), var(--room-violet));
  transition: width 0.4s ease;
}

.band-row strong {
  color: var(--muted);
  font-size: 11px;
  text-align: right;
}

.band-row.is-limited .band-track span { background: #555d68; }
.band-row.is-long .band-track span { background: linear-gradient(90deg, var(--room-amber), var(--room-red)); }
.band-row.is-short .band-track span { background: linear-gradient(90deg, var(--room-green), var(--room-cyan)); }

.usable-range {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 20px;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
}

.usable-range span {
  color: var(--dim);
  font-size: 10px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.usable-range strong { color: var(--room-cyan); font-size: 12px; }

.quality-list,
.usage-list {
  display: grid;
  gap: 8px;
  margin-top: 20px;
}

.quality-list > div,
.usage-list > div {
  min-height: 42px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 9px 11px;
  border-radius: 10px;
  border: 1px solid var(--line-soft);
  background: rgba(8,12,16,0.42);
}

.quality-list span,
.usage-list span {
  color: var(--muted);
  font-size: 12px;
}

.quality-list strong,
.usage-list strong {
  color: #fff;
  font-size: 11px;
  text-align: right;
}

.quality-list > div.is-pass strong { color: var(--room-green); }
.quality-list > div.is-caution strong { color: var(--room-amber); }
.quality-list > div.is-limited strong { color: var(--room-red); }

.recommendation-main {
  margin: 20px 0 0;
  color: #f1f4f7;
  font-size: clamp(18px, 2.4vw, 24px);
  line-height: 1.38;
  font-weight: 850;
  letter-spacing: -0.025em;
}

.recommendation-sub {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.55;
}


.save-room-check-panel {
  border-color: rgba(96,216,255,0.22);
}

.save-room-check-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
  gap: 10px;
  margin-top: 16px;
}

.save-field {
  display: grid;
  gap: 7px;
}

.save-field span {
  color: var(--dim);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.save-field input,
.save-field textarea {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  background: #090d12;
  color: #fff;
  outline: none;
  resize: vertical;
}

.save-field textarea {
  min-height: 70px;
  line-height: 1.45;
}

.save-field input::placeholder,
.save-field textarea::placeholder {
  color: rgba(216,224,233,0.38);
}

.save-field input:focus,
.save-field textarea:focus {
  border-color: rgba(96,216,255,0.52);
  box-shadow: 0 0 0 3px rgba(96,216,255,0.08);
}

.save-room-check-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.save-status {
  min-height: 18px;
}

.compare-panel {
  border-color: rgba(110,231,139,0.25);
}

.compare-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.compare-grid > div {
  min-height: 122px;
  padding: 14px;
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  background: rgba(8,12,16,0.48);
}

.compare-grid span,
.compare-grid strong,
.compare-grid small { display: block; }
.compare-grid span { color: var(--dim); font-size: 10px; font-weight: 900; text-transform: uppercase; letter-spacing: 0.07em; }
.compare-grid strong { margin-top: 9px; color: #fff; font-size: 18px; }
.compare-grid small { margin-top: 8px; color: var(--muted); line-height: 1.4; }

.room-guide {
  display: grid;
  gap: 20px;
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.guide-grid article {
  padding: 16px;
  border-radius: 13px;
  border: 1px solid var(--line-soft);
  background: rgba(8,12,16,0.42);
}

.guide-grid article > strong {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  color: #061117;
  background: var(--room-cyan);
  font-size: 12px;
}

.guide-grid h3 { margin: 14px 0 0; font-size: 17px; }
.guide-grid p,
.limitations-note { margin: 8px 0 0; color: var(--muted); line-height: 1.55; }
.limitations-note { padding-top: 16px; border-top: 1px solid var(--line-soft); font-size: 12px; }

.test-log-panel {
  padding: 0;
  overflow: hidden;
}

.test-log-panel summary {
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  cursor: pointer;
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
}

.test-log-body { padding: 0 16px 16px; }
.test-log-grid { display: flex; flex-wrap: wrap; gap: 8px; }
.test-log-grid span { padding: 7px 9px; border: 1px solid var(--line-soft); border-radius: 9px; color: var(--dim); font-size: 10px; }
.test-log-grid strong { color: var(--muted); }
.test-log-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 12px; }
.test-log-actions button { min-height: 34px; padding: 6px 10px; font-size: 11px; }

.translation-seed-area {
  position: fixed;
  left: 0;
  top: 0;
  width: 1px;
  height: 1px;
  opacity: 0.01;
  pointer-events: none;
  overflow: hidden;
  z-index: -1;
  white-space: normal;
}

.translation-seed-area span {
  display: block;
  width: 1px;
  min-height: 1px;
}

@keyframes roomPulse {
  0% { transform: translate(-50%, -50%) scale(0.72); opacity: 0.8; }
  100% { transform: translate(-50%, -50%) scale(1.38); opacity: 0; }
}

@keyframes roomFlash {
  0%, 100% { filter: brightness(1); transform: translate(-50%, -50%) scale(1); }
  40% { filter: brightness(1.8); transform: translate(-50%, -50%) scale(1.18); }
}

@media (max-width: 900px) {
  .room-hero,
  .visual-grid,
  .secondary-visual-grid,
  .interpretation-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 190px;
  }

  .result-card-grid,
  .compare-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .guide-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .room-hero {
    padding: 22px 18px;
  }

  .room-hero h1 {
    font-size: clamp(42px, 16vw, 64px);
  }

  .hero-visual {
    min-height: 160px;
  }

  .hero-pulse-1 { width: 72px; height: 72px; }
  .hero-pulse-2 { width: 116px; height: 116px; }
  .hero-pulse-3 { width: 158px; height: 158px; }

  .console-head,
  .summary-head,
  .visual-head {
    display: block;
  }

  .step-counter,
  .quality-badge {
    margin-top: 12px;
  }

  .measurement-stage {
    min-height: 360px;
    padding: 24px 14px;
  }

  .stage-title {
    font-size: clamp(27px, 9vw, 38px);
  }

  .console-actions,
  .result-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .primary-button,
  .secondary-button {
    width: 100%;
  }

  .result-hero-line {
    grid-template-columns: 1fr;
  }

  .decay-readout {
    min-width: 0;
    text-align: left;
  }

  .result-card-grid,
  .compare-grid {
    grid-template-columns: 1fr;
  }

  .save-room-check-grid {
    grid-template-columns: 1fr;
  }

  .save-room-check-actions {
    display: grid;
    grid-template-columns: 1fr;
  }


  .result-card {
    min-height: 0;
  }

  .curve-legend {
    justify-content: flex-start;
    margin-top: 12px;
  }

  .chart-shell {
    min-height: 260px;
    padding: 8px;
  }

  .result-canvas {
    height: 245px;
  }

  .reflection-shell,
  .reflection-shell .result-canvas {
    min-height: 220px;
    height: 220px;
  }

  .band-row {
    grid-template-columns: 58px minmax(80px, 1fr) 92px;
    gap: 8px;
  }

  .band-row strong {
    font-size: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* V105/V106 Room Response usability update */
.room-hero {
  grid-template-columns: 1fr;
  padding-block: clamp(18px, 3vw, 28px);
}

.room-hero::before,
.hero-visual {
  display: none !important;
}

.room-hero h1 {
  font-size: clamp(40px, 6vw, 66px);
}

.room-intro {
  margin-top: 12px;
  font-size: clamp(15px, 1.8vw, 17px);
}

.beta-note,
.privacy-note {
  margin-top: 12px;
}

.quick-instructions {
  display: grid;
  gap: 16px;
}

.quick-instruction-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.quick-instruction-grid article {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  padding: 14px;
  border: 1px solid var(--line-soft);
  border-radius: 13px;
  background: rgba(8,12,16,0.42);
}

.quick-instruction-grid strong {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  color: #061117;
  background: var(--room-cyan);
  font-size: 12px;
  font-weight: 950;
}

.quick-instruction-grid p,
.quick-note,
.room-seo p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.quick-note {
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
}

.measurement-console:not(.is-fullscreen-mode) .console-head,
.measurement-console:not(.is-fullscreen-mode) .measurement-stage,
.measurement-console:not(.is-fullscreen-mode) .clap-progress {
  display: none;
}

.measurement-console:not(.is-fullscreen-mode) {
  padding: clamp(20px, 3vw, 30px);
}

.measurement-console:not(.is-fullscreen-mode) .console-actions {
  margin-top: 0;
}

.measurement-console:not(.is-fullscreen-mode) .primary-button {
  min-height: 62px;
  min-width: min(100%, 360px);
  padding: 15px 28px;
  border-radius: 16px;
  font-size: 18px;
}

.measurement-console.is-fullscreen-mode {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: 100vw;
  max-width: none;
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0;
  padding: max(18px, env(safe-area-inset-top)) max(18px, env(safe-area-inset-right)) max(18px, env(safe-area-inset-bottom)) max(18px, env(safe-area-inset-left));
  border-radius: 0;
  background: radial-gradient(circle at center, rgba(96,216,255,0.10), transparent 45%), #0b0f14;
}

.measurement-console.is-fullscreen-mode .console-head {
  max-width: 980px;
  width: 100%;
  margin: 0 auto 12px;
}

.measurement-console.is-fullscreen-mode .measurement-stage {
  flex: 1 1 auto;
  width: min(980px, 100%);
  min-height: 0;
  margin: 0 auto;
  border-radius: 22px;
}

.measurement-console.is-fullscreen-mode .console-actions {
  width: min(980px, 100%);
  margin: 14px auto 0;
}

.stage-icon {
  display: none;
}

.measurement-console.is-fullscreen-mode .stage-eyebrow {
  font-size: clamp(13px, 2.2vw, 20px);
}

.measurement-console.is-fullscreen-mode .stage-title {
  font-size: clamp(34px, 8vw, 80px);
}

.measurement-console.is-fullscreen-mode .stage-copy {
  font-size: clamp(15px, 2.4vw, 22px);
}

.measurement-console.is-fullscreen-mode .countdown {
  font-size: clamp(86px, 20vw, 190px);
}

.room-response-card {
  grid-column: 1 / -1;
}

.room-response-shell {
  min-height: 310px;
}

.legend-reflection {
  width: 6px !important;
  height: 14px !important;
  background: var(--room-green) !important;
  opacity: .85;
}

.waveform-shell {
  margin-top: 12px;
  padding: 12px;
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  background: #080c11;
}

.waveform-label-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
  color: var(--dim);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: .07em;
  text-transform: uppercase;
}

.waveform-label-row strong {
  color: rgba(216,224,233,.52);
  font-size: 9px;
}

.waveform-canvas {
  display: block;
  width: 100%;
  height: 125px;
}

.reflection-detail-panel {
  margin-top: 14px;
  border-top: 1px solid var(--line-soft);
  padding-top: 12px;
}

.reflection-detail-panel summary {
  cursor: pointer;
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.reflection-detail-panel .reflection-shell {
  margin-top: 12px;
}

.reliability-grid {
  grid-template-columns: 1fr;
}

.room-seo {
  display: grid;
  gap: 12px;
}

.room-seo p + p {
  margin-top: 2px;
}

@media (max-width: 900px) {
  .quick-instruction-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .quick-instruction-grid {
    grid-template-columns: 1fr;
  }

  .measurement-console:not(.is-fullscreen-mode) .primary-button {
    width: 100%;
    min-width: 0;
  }

  .room-response-shell {
    min-height: 270px;
  }

  .waveform-canvas {
    height: 110px;
  }

  .band-panel-head {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .band-panel-head .usable-range {
    justify-content: space-between;
    text-align: left;
  }

  .waveform-label-row {
    display: block;
  }

  .waveform-label-row strong {
    display: block;
    margin-top: 4px;
  }
}