:root {
  --bg: #f3f3f1;
  --panel: #ffffff;
  --text: #161616;
  --muted: #666666;
  --line: #d8d8d3;
  --line-strong: #9f9f97;
  --accent: #191919;
  --error-bg: #f9eded;
  --error-text: #952b2b;
  --status-bg: #f4f4f2;
  --shadow: 0 12px 34px rgba(17, 17, 17, 0.06);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(180deg, #fafaf8 0%, var(--bg) 100%);
  color: var(--text);
  font-family: "Hiragino Sans", "Yu Gothic", sans-serif;
}

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

.app-shell {
  width: min(1240px, calc(100% - 24px));
  margin: 0 auto;
  padding: 20px 0 32px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero,
.input-panel,
.overview-panel,
.results-panel {
  padding: 22px;
}

.hero {
  margin-bottom: 18px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 12px;
  font-size: clamp(2rem, 3vw, 3rem);
  line-height: 1.08;
}

.hero-copy,
.panel-heading p,
.stats-list li,
.sample-list li,
.empty-state,
.message-box {
  line-height: 1.65;
}

.layout {
  display: grid;
  grid-template-columns: minmax(340px, 460px) minmax(0, 1fr);
  gap: 18px;
  margin-bottom: 18px;
  align-items: start;
}

.panel-heading {
  margin-bottom: 16px;
}

.panel-heading h2,
.card-head h3 {
  margin-bottom: 6px;
}

.input-stack {
  display: grid;
  gap: 16px;
}

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

.field span,
.control span {
  font-size: 0.92rem;
}

.field input,
.field textarea,
.control select {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: #fff;
  color: var(--text);
  padding: 12px 14px;
}

.field textarea {
  resize: vertical;
  min-height: 220px;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.primary-button,
.secondary-button,
.card-button {
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  min-height: 44px;
  padding: 11px 18px;
  font-weight: 600;
}

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

.primary-button:hover {
  background: #2a2a2a;
}

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

.secondary-button,
.card-button {
  background: #fff;
  color: var(--text);
  border: 1px solid var(--line-strong);
}

.secondary-button:hover,
.card-button:hover {
  background: #f6f6f4;
}

.message-box {
  display: none;
  margin-top: 14px;
  border-radius: 12px;
  padding: 12px 14px;
}

.message-box.is-visible {
  display: block;
}

.error-box {
  border: 1px solid #ebc4c4;
  background: var(--error-bg);
  color: var(--error-text);
}

.status-box {
  border: 1px solid var(--line);
  background: var(--status-bg);
  color: var(--muted);
}

.overview-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.overview-item {
  display: grid;
  gap: 8px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fafaf8;
}

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

.overview-item strong {
  font-size: 1rem;
}

.results-panel {
  padding-bottom: 24px;
}

.customize-card {
  margin-top: 18px;
  padding: 22px;
}

.customize-card-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.customize-card h2 {
  margin-bottom: 0;
  font-size: 1.08rem;
}

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

.customize-badge {
  display: inline-flex;
  align-items: center;
  padding: 7px 10px;
  border-radius: 999px;
  background: #fafaf8;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}

.customize-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.customize-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.output-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}

.output-tools {
  display: flex;
  align-items: end;
  gap: 12px;
}

.compact-control {
  min-width: 140px;
}

.compact-control select {
  min-height: 44px;
}

.empty-state {
  padding: 20px;
  border: 1px dashed var(--line-strong);
  border-radius: 16px;
  background: #fafaf8;
  color: var(--muted);
}

.hidden-columns-bar {
  display: grid;
  gap: 10px;
  margin-bottom: 16px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fafaf8;
}

.hidden-columns-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hidden-column-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--text);
}

.hidden-column-chip button {
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  padding: 0;
  font-weight: 600;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.analysis-card {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.01), transparent);
  padding: 18px;
}

.card-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 14px;
}

.card-head p {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.hint-list,
.keyword-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
}

.hint-list li,
.keyword-list li {
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fafaf8;
  color: var(--muted);
  font-size: 0.82rem;
}

.card-controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 14px;
}

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

.stats-list,
.sample-list {
  margin: 0 0 16px;
  padding-left: 18px;
}

.stats-list li,
.sample-list li {
  margin-bottom: 4px;
}

.chart-wrap {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  padding: 12px;
  min-height: 280px;
}

.chart-wrap.is-hidden,
.control.is-hidden {
  display: none;
}

.chart-wrap canvas {
  width: 100%;
  height: 250px;
}

.card-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 14px;
}

.is-exporting .card-actions {
  display: none;
}

.export-summary {
  width: 794px;
  padding: 24px;
  background: #ffffff;
  color: var(--text);
  font-family: "Hiragino Sans", "Yu Gothic", sans-serif;
}

.export-summary h1 {
  margin: 0 0 12px;
  font-size: 28px;
}

.export-summary ul {
  margin: 0;
  padding-left: 18px;
}

.export-summary li {
  margin-bottom: 6px;
  line-height: 1.6;
}

.app-credit {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 18px;
  padding: 6px 4px 0;
}

.credit-text {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}


.is-exporting .cards-grid {
  grid-template-columns: 1fr;
  gap: 14px;
}

.is-exporting .analysis-card {
  border-radius: 14px;
  padding: 16px;
  break-inside: avoid;
}

.is-exporting .chart-wrap {
  min-height: 240px;
}

.is-exporting .chart-wrap canvas {
  height: 220px;
}

@media (max-width: 960px) {
  .layout,
  .cards-grid {
    grid-template-columns: 1fr;
  }

  .output-head,
  .card-head {
    flex-direction: column;
    align-items: stretch;
  }

  .output-tools {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (max-width: 640px) {
  .app-shell {
    width: min(100% - 16px, 1240px);
    padding-top: 14px;
  }

  .hero,
  .input-panel,
  .overview-panel,
  .results-panel {
    padding: 18px;
  }

  .overview-grid,
  .card-controls {
    grid-template-columns: 1fr;
  }

  .toolbar {
    flex-direction: column;
  }

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

  .app-credit {
    flex-direction: column;
    align-items: stretch;
  }

  .customize-actions {
    flex-direction: column;
  }
}