:root {
  color-scheme: light;
  font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", "Meiryo", system-ui, sans-serif;
  background: #fff8dd;
  color: #24352a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  border: 0;
  border-radius: 8px;
  padding: 0.8rem 1rem;
  background: #e5eadf;
  color: #24352a;
  font-weight: 700;
  cursor: pointer;
}

button:hover:not(:disabled) {
  background: #d6e2cf;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

button.primary {
  background: #2f7d57;
  color: #fff;
}

button.primary:hover:not(:disabled) {
  background: #266847;
}

.teacher-toggle {
  position: fixed;
  z-index: 20;
  top: 16px;
  right: 16px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  padding: 0;
  background: #2f7d57;
  color: #fff;
  box-shadow: 0 8px 22px rgba(32, 56, 38, 0.22);
}

.app {
  display: block;
  min-height: 100vh;
  padding: 12px;
}

.record-panel,
.controls {
  border: 1px solid #d8e2d2;
  background: rgba(255, 255, 255, 0.94);
}

.record-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
  min-height: calc(100vh - 24px);
  padding: 18px;
  border-radius: 8px;
  background: linear-gradient(180deg, #fffdf0 0%, #f3fbef 100%);
}

.hero {
  text-align: center;
}

.kicker,
.student-message,
.status-grid span,
.count-row span,
.meter-top span,
.memo-label {
  color: #637064;
  font-weight: 700;
}

.kicker,
.student-message {
  margin: 0;
}

h1 {
  margin: 2px 0 6px;
  color: #b53655;
  font-size: clamp(2.2rem, 5.2vw, 5rem);
  line-height: 1.05;
  letter-spacing: 0;
}

.student-message {
  min-height: 1.8em;
  font-size: clamp(1.1rem, 2vw, 1.7rem);
}

.bloom-stage {
  display: inline-block;
  margin: 0;
  border: 2px solid #ffd1df;
  border-radius: 999px;
  padding: 0.35rem 1rem;
  background: #fff8fc;
  color: #b53655;
  font-weight: 900;
  font-size: clamp(1rem, 1.8vw, 1.45rem);
}

.status-grid,
.count-row {
  display: grid;
  gap: 10px;
}

.status-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.count-row {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 980px;
  width: 100%;
  margin: 0 auto;
}

.status-grid div,
.count-row div {
  min-width: 0;
  border: 2px solid #ffd2df;
  border-radius: 8px;
  padding: 12px 16px;
  background: #fff9fc;
  box-shadow: 0 5px 14px rgba(165, 65, 100, 0.08);
}

.status-grid span,
.count-row span {
  display: block;
  margin-bottom: 4px;
  font-size: 0.9rem;
}

.status-grid strong {
  display: block;
  overflow-wrap: anywhere;
  font-size: clamp(1rem, 1.5vw, 1.35rem);
  line-height: 1.35;
}

.count-row strong {
  display: block;
  overflow-wrap: anywhere;
  color: #b53655;
  font-size: clamp(1.4rem, 2.8vw, 2.5rem);
  line-height: 1.05;
}

.bottom-info {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px minmax(280px, 0.8fr);
  gap: 10px;
  max-width: 1120px;
  width: 100%;
  margin: 0 auto;
}

.session-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  border: 1px solid #e1e8dd;
  border-radius: 8px;
  padding: 10px;
  background: #fbfcf8;
}

.session-actions button {
  min-height: 56px;
  padding: 0.7rem 0.6rem;
  font-size: 1.05rem;
}

.meter-wrap {
  border: 1px solid #e1e8dd;
  border-radius: 8px;
  padding: 12px;
  background: #fbfcf8;
}

.meter-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.meter {
  position: relative;
  height: 26px;
  overflow: hidden;
  border-radius: 999px;
  background: #dfe9dc;
}

.meter div {
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #6abf69, #f4c24b, #d9475d);
  transition: width 80ms linear;
}

.meter i {
  position: absolute;
  top: -5px;
  bottom: -5px;
  width: 3px;
  background: #25382b;
  left: 60%;
}

.tree-stage {
  display: grid;
  place-items: center;
  min-height: 0;
  flex: 1;
  position: relative;
}

#sakuraSvg {
  display: block;
  width: 100%;
  max-width: 1180px;
  max-height: 64vh;
  min-height: 390px;
  border-radius: 8px;
  box-shadow: 0 10px 28px rgba(59, 91, 65, 0.14);
}

.aisatsu-mascot {
  position: absolute;
  right: max(18px, calc((100% - 1180px) / 2 + 28px));
  bottom: 14px;
  width: clamp(110px, 14vw, 178px);
  border: 0;
  padding: 0;
  background: transparent;
  color: #6b4d16;
  cursor: pointer;
  transform-origin: 50% 92%;
  filter: drop-shadow(0 8px 10px rgba(36, 53, 42, 0.18));
}

.aisatsu-mascot img {
  display: block;
  width: 100%;
  height: auto;
}

.aisatsu-mascot:disabled {
  cursor: not-allowed;
  opacity: 0.58;
}

.aisatsu-mascot:hover:not(:disabled) {
  background: transparent;
  transform: translateY(-2px);
}

.aisatsu-mascot.high-fived {
  animation: highFivePop 620ms ease-in-out;
}

.inclusive-actions {
  display: grid;
  justify-items: center;
  gap: 6px;
  margin-top: -2px;
}

.high-five-help {
  margin: 0;
  color: #6f745d;
  font-size: clamp(0.95rem, 1.3vw, 1.1rem);
  font-weight: 800;
}

.gaze-note {
  margin: 0;
  color: #637064;
  font-weight: 800;
}

.camera-check {
  display: grid;
  grid-column: 1 / -1;
  gap: 8px;
  border: 1px solid #dfe8da;
  border-radius: 8px;
  padding: 10px;
  background: #fbfcf8;
}

.camera-check video {
  width: 100%;
  max-height: 160px;
  border-radius: 8px;
  background: #dfe8da;
  object-fit: cover;
}

.camera-check video[hidden] {
  display: none;
}

.camera-check p {
  margin: 0;
  color: #637064;
  font-weight: 800;
}

.speech-bubble {
  position: absolute;
  top: -24px;
  left: -46px;
  min-width: 116px;
  border: 2px solid #f49ab9;
  border-radius: 999px;
  padding: 0.45rem 0.8rem;
  background: rgba(255, 250, 252, 0.96);
  color: #b53655;
  font-weight: 900;
  font-size: clamp(0.95rem, 1.5vw, 1.2rem);
  box-shadow: 0 6px 14px rgba(165, 65, 100, 0.14);
  opacity: 0;
  transform: translateY(6px) scale(0.94);
  transition: opacity 180ms ease, transform 180ms ease;
}

.speech-bubble::after {
  content: "";
  position: absolute;
  right: 24px;
  bottom: -9px;
  width: 14px;
  height: 14px;
  border-right: 2px solid #f49ab9;
  border-bottom: 2px solid #f49ab9;
  background: rgba(255, 250, 252, 0.96);
  transform: rotate(45deg);
}

.aisatsu-mascot.high-fived .speech-bubble {
  opacity: 1;
  transform: translateY(0) scale(1);
  animation: speechBubbleShow 1800ms ease both;
}

.high-five-label {
  position: absolute;
  right: 0;
  bottom: -6px;
  border-radius: 999px;
  padding: 0.3rem 0.72rem;
  background: #fff7dc;
  color: #6b4d16;
  font-size: 0.8rem;
  font-weight: 900;
  box-shadow: 0 4px 10px rgba(135, 98, 25, 0.16);
}

.flower {
  transform-box: fill-box;
  transform-origin: center;
  animation: bloom 360ms ease-out both;
}

.petal {
  transform-box: fill-box;
  transform-origin: center;
  animation: floatPetal 2600ms ease-in-out infinite;
}

.full-bloom-overlay {
  display: none;
  pointer-events: none;
}

.full-bloom-overlay rect {
  fill: rgba(255, 250, 252, 0.92);
  stroke: #f49ab9;
  stroke-width: 4;
}

.full-bloom-overlay text {
  fill: #b53655;
  font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", "Meiryo", system-ui, sans-serif;
  font-weight: 900;
  text-anchor: middle;
}

.full-bloom-overlay text:first-of-type {
  font-size: 32px;
}

.full-bloom-overlay text:last-of-type {
  font-size: 24px;
}

.record-panel.full-bloom .full-bloom-overlay {
  display: block;
}

@keyframes bloom {
  from {
    opacity: 0;
    transform: scale(0.1) rotate(-18deg);
  }
  to {
    opacity: 1;
    transform: scale(1) rotate(0deg);
  }
}

@keyframes floatPetal {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(10px);
  }
}

@keyframes highFivePop {
  0%,
  100% {
    transform: translateY(0) scale(1);
  }
  35% {
    transform: translateY(-8px) scale(1.08) rotate(-2deg);
  }
  68% {
    transform: translateY(2px) scale(0.98);
  }
}

@keyframes speechBubbleShow {
  0% {
    opacity: 0;
    transform: translateY(6px) scale(0.94);
  }
  12%,
  78% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  100% {
    opacity: 0;
    transform: translateY(-4px) scale(0.98);
  }
}

.controls {
  position: fixed;
  z-index: 15;
  top: 86px;
  right: 16px;
  width: min(390px, calc(100vw - 32px));
  max-height: calc(100vh - 108px);
  display: none;
  flex-direction: column;
  gap: 16px;
  padding: 18px;
  overflow: auto;
  border-radius: 8px;
  box-shadow: 0 18px 48px rgba(26, 43, 32, 0.2);
}

.controls.open {
  display: flex;
}

.button-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.memo-label {
  margin-bottom: -10px;
}

textarea,
input[type="number"],
select {
  width: 100%;
  border: 1px solid #cbd8c4;
  border-radius: 8px;
  padding: 0.7rem;
  background: #fff;
  color: #24352a;
}

textarea {
  resize: vertical;
}

summary {
  cursor: pointer;
  font-weight: 800;
}

.settings-grid {
  display: grid;
  gap: 12px;
  margin-top: 12px;
}

.settings-grid label {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
  color: #475448;
  font-weight: 700;
}

.settings-grid input[type="range"] {
  grid-column: 1 / -1;
  width: 100%;
}

.settings-grid input[type="number"] {
  grid-column: 1 / -1;
}

.settings-grid select {
  grid-column: 1 / -1;
}

.settings-grid .check-setting {
  grid-template-columns: auto 1fr;
  justify-content: start;
}

.check-setting input {
  width: 1.25rem;
  height: 1.25rem;
}

.history {
  border-top: 1px solid #dfe8da;
  padding-top: 12px;
}

.history-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.history h2 {
  margin: 0;
  font-size: 1.1rem;
}

.history-head button {
  padding: 0.5rem 0.7rem;
  font-size: 0.9rem;
}

.history-list {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}

.history-item {
  border: 1px solid #e1e8dd;
  border-radius: 8px;
  padding: 10px;
  background: #fbfcf8;
}

.history-item strong {
  display: block;
}

.history-item span {
  color: #657066;
  font-size: 0.9rem;
}

@media (max-width: 980px) {
  .bottom-info {
    grid-template-columns: 1fr;
  }

  .session-actions {
    max-width: 420px;
    width: 100%;
    margin: 0 auto;
  }

  #sakuraSvg {
    max-height: none;
  }
}

@media (max-width: 680px) {
  .app {
    padding: 10px;
  }

  .record-panel,
  .controls {
    padding: 14px;
  }

  .status-grid,
  .button-row {
    grid-template-columns: 1fr;
  }

  .count-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 6px;
  }

  .count-row div {
    padding: 9px 6px;
  }

  .count-row span {
    font-size: 0.78rem;
  }

  #sakuraSvg {
    min-height: 330px;
  }

  .aisatsu-mascot {
    right: 14px;
    bottom: 10px;
    width: 102px;
  }

  .speech-bubble {
    left: -58px;
    top: -22px;
    min-width: 104px;
    font-size: 0.9rem;
  }
}