:root {
  --bg: #f3efe6;
  --paper: rgba(255, 251, 244, 0.9);
  --paper-strong: #fffaf1;
  --ink: #18201b;
  --muted: #5f665d;
  --line: rgba(24, 32, 27, 0.12);
  --accent: #a44724;
  --accent-soft: rgba(164, 71, 36, 0.12);
  --olive: #586c3d;
  --shadow: 0 18px 40px rgba(77, 54, 28, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "IBM Plex Sans", sans-serif;
  background:
    radial-gradient(circle at top right, rgba(164, 71, 36, 0.14), transparent 28%),
    radial-gradient(circle at top left, rgba(88, 108, 61, 0.16), transparent 30%),
    linear-gradient(180deg, #f6f1e8 0%, #efe7d8 100%);
}

button,
select,
input {
  font: inherit;
}

.shell {
  max-width: 1480px;
  margin: 0 auto;
  padding: 28px 20px 40px;
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: end;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: 26px;
  background: linear-gradient(135deg, rgba(255, 250, 241, 0.94), rgba(246, 238, 224, 0.92));
  box-shadow: var(--shadow);
}

.eyebrow,
.section-label {
  margin: 0 0 6px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  font-family: "IBM Plex Serif", serif;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 0.96;
}

.hero-title-row {
  display: inline-flex;
  align-items: flex-end;
  gap: 14px;
}

.hero-mark {
  width: 58px;
  height: 58px;
  object-fit: contain;
  flex: 0 0 auto;
  transform: translate(2px, 7px);
}

h2 {
  margin: 0 0 12px;
  font-size: 1.4rem;
}

.hero-copy,
.hint {
  color: var(--muted);
}

.hero-copy {
  max-width: 72ch;
  margin: 10px 0 0;
}

.hero-inline-link {
  display: inline-flex;
  align-items: center;
  margin-left: 12px;
  padding: 3px 10px;
  border: 1px solid rgba(164, 71, 36, 0.24);
  border-radius: 999px;
  background: rgba(164, 71, 36, 0.08);
  color: var(--accent);
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}

.hero-inline-link:hover {
  background: rgba(164, 71, 36, 0.16);
}

.hero-note {
  min-width: 210px;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(24, 32, 27, 0.08);
  text-align: right;
}

.hero-note span {
  display: block;
  font-size: 0.78rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.hero-note strong {
  display: block;
  margin-top: 4px;
  font-size: 0.98rem;
}

.layout {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.control-panel,
.content {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.panel-card,
.content-card {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.panel-card {
  padding: 18px;
}

.content-card {
  padding: 22px;
}

select,
input[type="search"] {
  width: 100%;
  padding: 10px 12px;
  border-radius: 16px;
  border: 1px solid rgba(24, 32, 27, 0.16);
  background: var(--paper-strong);
  color: var(--ink);
}

.ghost-button {
  width: 100%;
  margin-top: 10px;
  padding: 10px 12px;
  border-radius: 16px;
  border: 1px solid rgba(164, 71, 36, 0.28);
  background: var(--accent-soft);
  color: var(--accent);
  cursor: pointer;
}

.ghost-button:hover {
  background: rgba(164, 71, 36, 0.18);
}

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

.checklist {
  display: grid;
  gap: 8px;
  max-height: 224px;
  overflow: auto;
  padding: 4px 2px;
}

.checklist-tall {
  max-height: 360px;
}

.check-item {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 9px 10px;
  border-radius: 14px;
  border: 1px solid rgba(24, 32, 27, 0.08);
  background: rgba(255, 255, 255, 0.58);
  cursor: pointer;
}

.check-item input {
  margin-top: 2px;
  accent-color: var(--accent);
}

.check-copy {
  min-width: 0;
  display: grid;
  gap: 2px;
}

.check-title {
  font-size: 0.86rem;
  font-weight: 600;
}

.check-note {
  color: var(--muted);
  font-size: 0.73rem;
}

.search-label {
  display: block;
  margin-bottom: 2px;
  font-size: 0.72rem;
  color: var(--muted);
  font-weight: 600;
}

.control-field {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  min-width: 0;
  flex: 0 1 auto;
}

.control-tag {
  color: var(--muted);
  font-size: 0.67rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}

.control-field select {
  width: auto;
  min-width: 0;
  max-width: 168px;
  padding: 4px 6px;
  border-radius: 8px;
  font-size: 0.76rem;
}

.chart-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 8px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid rgba(24, 32, 27, 0.08);
}

#runInfoSelect {
  margin-bottom: 10px;
}

.run-info-list {
  display: grid;
  gap: 6px;
}

.run-info-card {
  padding: 8px 10px;
  border-radius: 12px;
  border: 1px solid rgba(24, 32, 27, 0.08);
  background: rgba(255, 255, 255, 0.58);
}

.run-info-title {
  margin: 0 0 4px;
  font-size: 0.88rem;
  font-weight: 700;
}

.run-info-text {
  margin: 0 0 4px;
  font-size: 0.75rem;
  line-height: 1.34;
}

.run-info-card ul {
  margin: 0;
  padding-left: 16px;
}

.run-info-card li + li {
  margin-top: 4px;
}

.equation-bar {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}

.equation-bar input[type="text"] {
  flex: 1;
  padding: 10px 14px;
  border-radius: 16px;
  border: 1px solid rgba(24, 32, 27, 0.16);
  background: var(--paper-strong);
  color: var(--ink);
  font-family: "IBM Plex Mono", "IBM Plex Sans", monospace;
  font-size: 0.88rem;
}

.equation-button {
  width: auto;
  flex: 0 0 auto;
  margin-top: 0;
  padding: 10px 20px;
}

.equation-error {
  margin-bottom: 10px;
  padding: 10px 14px;
  border-radius: 14px;
  border: 1px solid rgba(164, 71, 36, 0.3);
  background: rgba(164, 71, 36, 0.08);
  color: var(--accent);
  font-size: 0.82rem;
}

.equation-remove {
  float: right;
  border: none;
  background: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
  padding: 0 4px;
}

.equation-remove:hover {
  color: var(--accent);
}

.chart-download {
  margin-left: auto;
  padding: 4px 10px;
  border-radius: 8px;
  border: 1px solid rgba(24, 32, 27, 0.12);
  background: transparent;
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 600;
  cursor: pointer;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.chart-download:hover {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: rgba(164, 71, 36, 0.24);
}

.charts-grid {
  display: grid;
  gap: 16px;
}

.chart-card {
  padding: 14px;
  border-radius: 18px;
  border: 1px solid rgba(24, 32, 27, 0.08);
  background: rgba(255, 255, 255, 0.62);
}

.chart-card h3 {
  margin: 0 0 10px;
  font-size: 1.2rem;
}

.chart-surface {
  min-height: 360px;
}

.empty-state {
  padding: 28px;
  border-radius: 18px;
  border: 1px dashed rgba(24, 32, 27, 0.18);
  color: var(--muted);
  text-align: center;
}

.dictionary-results {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 6px;
  margin-top: 10px;
}

.equation-results {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.dict-card {
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(24, 32, 27, 0.08);
  background: rgba(255, 255, 255, 0.58);
}

.dict-header {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: baseline;
}

.dict-header strong {
  font-size: 0.95rem;
}

.dict-header .dict-short-name {
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 400;
  flex-shrink: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dict-header span {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  flex-shrink: 0;
}

.dict-card p {
  margin: 4px 0 0;
  font-size: 0.88rem;
  line-height: 1.4;
  color: var(--muted);
}

.equation-group {
  display: grid;
  gap: 10px;
}

.equation-group h3 {
  margin: 0;
  font-size: 1rem;
}

.equation-card {
  padding: 14px;
  border-radius: 18px;
  border: 1px solid rgba(24, 32, 27, 0.08);
  background: rgba(255, 255, 255, 0.58);
}

.equation-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
  margin-bottom: 10px;
}

.equation-id {
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent);
  text-transform: uppercase;
}

.equation-type {
  color: var(--muted);
  font-size: 0.75rem;
}

.equation-card h4 {
  margin: 0;
  font-size: 1rem;
}

.equation-card p {
  margin: 8px 0 0;
  line-height: 1.48;
}

.equation-code {
  font-family: "IBM Plex Mono", "IBM Plex Sans", monospace;
  font-size: 0.86rem;
  overflow-wrap: anywhere;
}

.equation-note {
  color: var(--muted);
  font-size: 0.82rem;
}

@media (max-width: 1080px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .hero {
    flex-direction: column;
    align-items: start;
  }

  .hero-note {
    text-align: left;
  }
}

@media (max-width: 760px) {
  .shell {
    padding: 18px 14px 30px;
  }

  .content-card,
  .panel-card {
    padding: 16px;
    border-radius: 20px;
  }

  .checklist,
  .checklist-tall {
    max-height: 260px;
  }

  .chart-surface {
    min-height: 300px;
  }
}