:root {
  --bg: #ece9e2;
  --panel: rgba(255, 255, 255, 0.86);
  --panel-strong: #ffffff;
  --ink: #191816;
  --muted: #6d665e;
  --line: rgba(25, 24, 22, 0.1);
  --accent: #161616;
  --accent-soft: #efe8df;
  --shadow: 0 18px 50px rgba(43, 33, 20, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Hiragino Sans", "Yu Gothic", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(0, 0, 0, 0.04), transparent 22%),
    linear-gradient(180deg, #f3efe9 0%, var(--bg) 100%);
}

button,
textarea {
  font: inherit;
}

.app-shell {
  min-height: 100vh;
  display: flex;
}

.sidebar {
  width: 264px;
  background: rgba(255, 255, 255, 0.72);
  border-right: 1px solid var(--line);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  backdrop-filter: blur(14px);
}

.brand {
  margin: 0 0 40px;
  font-size: 1.3rem;
}

.sidebar-nav {
  display: grid;
  gap: 18px;
  font-size: 0.95rem;
}

.sidebar-item {
  color: var(--muted);
}

.sidebar-item-active {
  color: var(--ink);
  font-weight: 700;
}

.sidebar-version {
  margin: 0;
  font-size: 0.8rem;
  color: #9a9288;
}

.main-content {
  flex: 1;
  padding: 28px;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.page-header h2 {
  margin: 0 0 6px;
  font-size: 2rem;
}

.page-header p {
  margin: 0;
  color: var(--muted);
}

.primary-button,
.secondary-button,
.ghost-button,
.history-button {
  appearance: none;
  border: 0;
  border-radius: 16px;
  padding: 12px 16px;
  cursor: pointer;
  transition: transform 0.18s ease, opacity 0.18s ease;
}

.primary-button:hover,
.secondary-button:hover,
.ghost-button:hover,
.history-button:hover {
  transform: translateY(-1px);
}

.primary-button {
  background: var(--accent);
  color: #fff;
}

.secondary-button {
  background: var(--accent-soft);
  color: var(--ink);
}

.ghost-button {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 24px;
}

.metric-card,
.panel,
.analysis-card,
.insight-card,
.history-row {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.metric-card {
  border-radius: 24px;
  padding: 22px;
}

.metric-card p {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.92rem;
}

.metric-card h3 {
  margin: 0;
  font-size: 2rem;
}

.layout-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 20px;
  margin-bottom: 24px;
}

.panel {
  border-radius: 28px;
  padding: 24px;
  margin-bottom: 24px;
}

.panel-head {
  margin-bottom: 18px;
}

.panel-head h3,
.panel-head h4 {
  margin: 0 0 6px;
}

.panel-head p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.field-stack {
  display: grid;
  gap: 14px;
}

.chat-log-input {
  min-height: 320px;
  max-height: 520px;
  overflow: auto;
  display: grid;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(248, 247, 244, 0.95);
}

.chat-bubble {
  max-width: 88%;
  padding: 12px 14px;
  border-radius: 18px;
  line-height: 1.75;
  white-space: pre-wrap;
}

.chat-bubble-assistant {
  background: #ece5db;
  color: var(--ink);
}

.chat-bubble-user {
  margin-left: auto;
  background: var(--accent);
  color: #fff;
}

.chat-entry {
  margin-top: 16px;
}

.captured-panel {
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.captured-fields {
  display: grid;
  gap: 10px;
}

.captured-item {
  background: rgba(248, 247, 244, 0.95);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 12px 14px;
}

.captured-item span {
  display: block;
  font-size: 0.84rem;
  color: #8f877d;
  margin-bottom: 4px;
}

.captured-item p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.field-block label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.94rem;
  color: var(--muted);
}

textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 14px;
  resize: vertical;
  background: rgba(248, 247, 244, 0.95);
  color: var(--ink);
}

.button-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.questions-panel {
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.question-block + .question-block {
  margin-top: 14px;
}

.question-block p {
  margin: 0 0 8px;
  font-weight: 700;
  line-height: 1.7;
}

.analysis-stack,
.history-list {
  display: grid;
  gap: 12px;
}

.history-empty {
  margin-top: 12px;
  color: var(--muted);
}

.analysis-card {
  border-radius: 20px;
  padding: 14px;
}

.analysis-card b {
  display: block;
  margin-bottom: 6px;
}

.analysis-card p,
.analysis-card li {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.analysis-card ul {
  margin: 0;
  padding-left: 18px;
}

.insight-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.insight-card {
  border-radius: 22px;
  padding: 18px;
}

.insight-card b {
  display: block;
  margin-bottom: 6px;
}

.insight-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.history-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  border-radius: 20px;
  padding: 14px 16px;
  align-items: center;
}

.history-row b {
  display: block;
  margin-bottom: 4px;
}

.history-row p {
  margin: 0;
  color: var(--muted);
}

.history-button {
  background: transparent;
  color: #8f877d;
  padding-inline: 0;
}

.history-detail {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.history-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.detail-card {
  background: rgba(248, 247, 244, 0.95);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 16px;
}

.detail-card b {
  display: block;
  margin-bottom: 12px;
}

.detail-stack {
  display: grid;
  gap: 10px;
}

.detail-item span {
  display: block;
  font-size: 0.84rem;
  color: #8f877d;
  margin-bottom: 3px;
}

.detail-item p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.hidden {
  display: none;
}

@media (max-width: 960px) {
  .sidebar {
    display: none;
  }

  .main-content {
    padding: 20px;
  }

  .layout-grid,
  .metrics,
  .insight-grid,
  .history-detail-grid {
    grid-template-columns: 1fr;
  }
}