:root {
  color-scheme: light;
  --bg: #f8f4ec;
  --panel: rgba(255, 255, 255, 0.88);
  --panel-border: rgba(116, 90, 63, 0.14);
  --text: #1f1b18;
  --muted: #6b625a;
  --accent: #bb5a34;
  --accent-dark: #964322;
  --assistant: #f3dfd1;
  --user: #efe7db;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Hiragino Sans", "Noto Sans JP", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(187, 90, 52, 0.12), transparent 30%),
    linear-gradient(180deg, #f7efe6 0%, var(--bg) 100%);
  color: var(--text);
}

.app-shell {
  max-width: 720px;
  margin: 0 auto;
  padding: 20px 16px 40px;
}

.hero {
  padding: 8px 4px 18px;
}

.eyebrow {
  margin: 0 0 8px;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-dark);
}

.hero h1 {
  margin: 0;
  font-size: 2rem;
  line-height: 1.05;
}

.subtitle {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.5;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 20px;
  padding: 16px;
  backdrop-filter: blur(10px);
  box-shadow: 0 14px 40px rgba(44, 26, 12, 0.08);
}

.panel + .panel {
  margin-top: 16px;
}

.profile-panel h2 {
  margin: 0 0 10px;
  font-size: 1.25rem;
}

.profile-panel p {
  margin: 0;
  line-height: 1.55;
}

.profile-panel p + p {
  margin-top: 10px;
}

.note {
  color: var(--muted);
  font-size: 0.92rem;
}

.beta-notice {
  margin-bottom: 16px;
  padding: 14px;
  border: 1px solid rgba(187, 90, 52, 0.22);
  border-radius: 16px;
  background: rgba(243, 223, 209, 0.58);
}

.beta-notice strong {
  display: block;
  margin-bottom: 6px;
}

.beta-notice p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.visual-panel {
  overflow: hidden;
}

.visual-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
}

.visual-eyebrow {
  margin: 0 0 6px;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-dark);
}

.visual-header h2 {
  margin: 0;
  font-size: 1.2rem;
}

.visual-status-text {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
  text-align: right;
}

.mika-panel {
  position: relative;
  margin-top: 16px;
  min-height: 220px;
  border-radius: 24px;
  overflow: hidden;
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.75), transparent 36%),
    linear-gradient(180deg, #f2dccf 0%, #f8eee7 48%, #f5e2d2 100%);
  border: 1px solid rgba(150, 67, 34, 0.12);
}

.mika-aura {
  position: absolute;
  inset: 14% 18%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.55), transparent 68%);
  transition: transform 220ms ease, opacity 220ms ease;
}

.mika-face {
  position: relative;
  width: 148px;
  height: 148px;
  margin: 34px auto 0;
  border-radius: 50%;
  background: linear-gradient(180deg, #fff4ec 0%, #f8d7c4 100%);
  box-shadow:
    inset 0 -10px 18px rgba(150, 67, 34, 0.08),
    0 18px 28px rgba(90, 54, 28, 0.12);
  transition: transform 180ms ease;
}

.mika-eyes {
  display: flex;
  justify-content: center;
  gap: 28px;
  padding-top: 52px;
}

.mika-eye {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #3a2a22;
  transform-origin: center;
  transition: transform 140ms ease, height 140ms ease, width 140ms ease;
}

.mika-mouth {
  position: absolute;
  left: 50%;
  bottom: 34px;
  width: 28px;
  height: 12px;
  transform: translateX(-50%);
  border-bottom: 3px solid #7a4330;
  border-radius: 0 0 18px 18px;
  transition: all 140ms ease;
}

.mika-blush {
  position: absolute;
  top: 90px;
  width: 22px;
  height: 10px;
  border-radius: 50%;
  background: rgba(214, 106, 94, 0.28);
}

.mika-blush.left {
  left: 26px;
}

.mika-blush.right {
  right: 26px;
}

.mika-panel.state-listening .mika-face {
  transform: scale(1.02) translateY(-2px);
}

.mika-panel.state-listening .mika-eye {
  width: 20px;
}

.mika-panel.state-thinking .mika-face {
  transform: translateY(-4px);
}

.mika-panel.state-thinking .mika-eye.left {
  transform: translateY(2px) scaleY(0.7);
}

.mika-panel.state-thinking .mika-eye.right {
  transform: translateY(-2px) scaleY(0.9);
}

.mika-panel.state-thinking .mika-mouth {
  width: 18px;
}

.mika-panel.state-speaking .mika-mouth {
  height: 22px;
  width: 24px;
  border: 3px solid #7a4330;
  border-top: 0;
  border-radius: 0 0 18px 18px;
  animation: mouthTalk 0.55s ease-in-out infinite alternate;
}

.mika-panel.state-reacting .mika-face {
  transform: scale(1.03);
}

.mika-panel.state-reacting .mika-aura {
  transform: scale(1.06);
}

.mika-panel.state-recovery .mika-eye {
  height: 10px;
}

.mika-panel.state-closed .mika-face {
  opacity: 0.7;
}

.mika-panel.reaction-warm .mika-aura {
  opacity: 0.92;
}

.mika-panel.reaction-supportive .mika-mouth {
  width: 20px;
}

.mika-panel.reaction-curious .mika-face {
  transform: rotate(-2deg);
}

.mika-panel.reaction-calm .mika-aura {
  opacity: 0.75;
}

.field {
  display: grid;
  gap: 8px;
}

.field + .field {
  margin-top: 14px;
}

.field span {
  font-size: 0.9rem;
  color: var(--muted);
}

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

input,
textarea,
select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid rgba(31, 27, 24, 0.12);
  border-radius: 14px;
  background: white;
  color: var(--text);
}

textarea {
  resize: vertical;
}

.primary-button {
  margin-top: 14px;
  border: 0;
  border-radius: 999px;
  padding: 12px 16px;
  color: white;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
}

.primary-button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

.session-meta {
  margin-top: 14px;
  font-size: 0.9rem;
  color: var(--muted);
}

.beta-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 14px 0 0;
}

.beta-metrics div {
  padding: 10px;
  border-radius: 14px;
  background: rgba(239, 231, 219, 0.7);
}

.beta-metrics dt {
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 0.78rem;
}

.beta-metrics dd {
  margin: 0;
  font-size: 0.94rem;
  font-weight: 700;
}

.messages {
  display: grid;
  gap: 10px;
  min-height: 300px;
  max-height: 52vh;
  overflow-y: auto;
  padding-bottom: 8px;
}

.message {
  border-radius: 18px;
  padding: 12px 14px;
  line-height: 1.45;
}

.message.user {
  background: var(--user);
}

.message.assistant {
  background: var(--assistant);
}

.message.meta {
  background: transparent;
  padding: 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.chat-form {
  margin-top: 12px;
}

.feedback-modal[hidden] {
  display: none;
}

.feedback-modal {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 18px;
  background: rgba(31, 27, 24, 0.32);
}

.feedback-dialog {
  width: min(100%, 420px);
  display: grid;
  gap: 14px;
  padding: 18px;
  border: 1px solid var(--panel-border);
  border-radius: 22px;
  background: #fffaf4;
  box-shadow: 0 18px 54px rgba(31, 27, 24, 0.2);
}

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

.feedback-header h2 {
  margin: 0;
  font-size: 1.15rem;
}

.icon-button {
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: 50%;
  color: var(--text);
  background: var(--user);
}

.check-field {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: 0.95rem;
}

.check-field input {
  width: auto;
}

.consent-field {
  align-items: flex-start;
  margin-top: 14px;
  line-height: 1.45;
}

@keyframes mouthTalk {
  from {
    transform: translateX(-50%) scaleY(0.85);
  }

  to {
    transform: translateX(-50%) scaleY(1.08);
  }
}

@media (min-width: 768px) {
  .app-shell {
    padding-top: 36px;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .visual-header {
    align-items: center;
  }
}