:root {
  --bg: #f5efe3;
  --surface: rgba(255, 252, 245, 0.88);
  --surface-strong: #fffaf1;
  --surface-muted: rgba(92, 72, 38, 0.06);
  --line: rgba(92, 72, 38, 0.15);
  --text: #1f1a14;
  --muted: #675746;
  --accent: #c55a11;
  --accent-soft: #ffe7ca;
  --up: #c24d2c;
  --down: #0f7b85;
  --shadow: 0 20px 45px rgba(65, 44, 10, 0.12);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

body {
  font-family: "Nanum Gothic", "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", sans-serif;
  color: var(--text);
  background: #efe5d6;
}

button,
input {
  font: inherit;
}

.page-shell {
  width: min(1180px, 100%);
  max-width: 100%;
  margin: 0 auto;
  padding: 18px 14px 48px;
}

.section__eyebrow {
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  font-size: 0.76rem;
  margin: 0 0 10px;
}

.section h2 {
  margin: 0;
  line-height: 1.15;
  min-width: 0;
}
.section,
.summary-card,
.accordion-item,
.table-wrap {
  border: 1px solid var(--line);
  background: var(--surface);
  backdrop-filter: blur(18px);
}

.control-panel {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.chart-controls {
  margin-left: auto;
}

.calculator-toggle {
  margin-left: auto;
}

.toggle-group {
  display: inline-flex;
  padding: 3px;
  border-radius: 999px;
  background: rgba(92, 72, 38, 0.08);
  gap: 4px;
  max-width: 100%;
}

.toggle-group__button,
.chip-button,
.summary-card {
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.toggle-group__button,
.chip-button {
  border: 0;
  cursor: pointer;
}

.toggle-group__button {
  flex: 1 1 0;
  padding: 8px 12px;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  white-space: nowrap;
}

.toggle-group__button.is-active {
  background: var(--surface-strong);
  color: var(--text);
  box-shadow: 0 6px 18px rgba(70, 54, 32, 0.12);
}

.chip-button {
  padding: 11px 16px;
  border-radius: 999px;
  background: #201b16;
  color: #fff8ec;
}

.chip-button--primary {
  background: var(--accent);
}

.content {
  display: grid;
  gap: 18px;
  margin-top: 18px;
  min-width: 0;
}

.section {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  border-radius: var(--radius-xl);
  padding: 18px;
}

.section__heading {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 12px;
  min-width: 0;
}

.section__meta-line {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px 14px;
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
  text-align: right;
}

.favorites-toolbar {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  margin-bottom: 12px;
}

.favorites-toolbar__message {
  margin: -4px 0 12px;
  color: var(--up);
  font-size: 0.82rem;
}

.favorites-toolbar__select,
.favorites-toolbar__add,
.summary-card__icon-button {
  border: 1px solid rgba(92, 72, 38, 0.14);
  background: rgba(255, 250, 241, 0.9);
  color: var(--muted);
}

.favorites-toolbar__select,
.favorites-toolbar__add {
  height: 38px;
  border-radius: 12px;
}

.favorites-toolbar__select {
  flex: 1 1 auto;
  min-width: 0;
  padding: 0 12px;
}

.favorites-toolbar__add,
.summary-card__icon-button {
  cursor: pointer;
}

.favorites-toolbar__add {
  flex: 0 0 auto;
  padding: 0 12px;
  color: var(--text);
  background: rgba(255, 248, 236, 0.98);
}

.card-strip {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(220px, 84%);
  gap: 12px;
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: 8px;
  scroll-snap-type: x proximity;
  overscroll-behavior-x: contain;
  -webkit-overflow-scrolling: touch;
}

.card-strip::-webkit-scrollbar {
  height: 8px;
}

.card-strip::-webkit-scrollbar-thumb {
  background: rgba(92, 72, 38, 0.16);
  border-radius: 999px;
}

.summary-card {
  width: 100%;
  min-width: 0;
  border-radius: var(--radius-lg);
  padding: 16px;
  cursor: pointer;
  scroll-snap-align: start;
}

.summary-card.is-emphasized {
  border-color: rgba(31, 26, 20, 0.35);
  transform: none;
  box-shadow: 0 10px 20px rgba(65, 44, 10, 0.08);
}

.summary-card__top,
.summary-card__bottom {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: start;
}

.summary-card__actions {
  display: inline-flex;
  gap: 6px;
  margin-top: 2px;
}

.summary-card__icon-button {
  width: 32px;
  height: 32px;
  border-radius: 999px;
}

.summary-card__code {
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 1.1rem;
}

.summary-card__name,
.summary-card__unit {
  color: var(--muted);
  font-size: 0.83rem;
}

.summary-card__price-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.summary-card__price {
  margin: 12px 0 4px;
  font-size: 1.6rem;
  font-weight: 700;
  min-width: 0;
  overflow-wrap: anywhere;
}

.metric {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  padding: 5px 9px;
  border-radius: 999px;
  font-size: 0.82rem;
  background: var(--surface-muted);
}

.metric.is-up {
  color: var(--up);
  background: rgba(194, 77, 44, 0.1);
}

.metric.is-down {
  color: var(--down);
  background: rgba(15, 123, 133, 0.1);
}

.sparkline {
  width: 100%;
  height: 56px;
  margin: 14px 0;
  display: block;
}

.chart-panel {
  position: relative;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow: hidden;
  border-radius: 24px;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 249, 238, 0.95), rgba(255, 252, 247, 0.78));
  padding: 10px;
}

#main-chart {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  touch-action: none;
}

.chart-tooltip {
  position: absolute;
  top: 16px;
  left: 16px;
  min-width: 178px;
  padding: 12px;
  border-radius: 16px;
  background: rgba(28, 24, 19, 0.92);
  color: #fff9ef;
  pointer-events: none;
  box-shadow: 0 14px 30px rgba(21, 16, 11, 0.3);
}

.chart-tooltip__date {
  font-size: 0.82rem;
  color: rgba(255, 249, 239, 0.72);
  margin-bottom: 8px;
}

.chart-tooltip__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  font-size: 0.88rem;
}

.chart-tooltip__row + .chart-tooltip__row {
  margin-top: 6px;
}

.chart-tooltip__meta {
  margin-top: 8px;
  font-size: 0.78rem;
  color: rgba(255, 249, 239, 0.72);
}

.chart-tooltip__swatch {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 8px;
}

.active-series {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  margin-top: 14px;
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  padding-bottom: 4px;
}

.active-series__chip {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(92, 72, 38, 0.08);
  color: var(--text);
  font-size: 0.84rem;
}

.active-series__value {
  font-size: 0.82rem;
}

.calculator {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  align-items: stretch;
}

.calculator__field,
.calculator__result {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px;
  border-radius: 18px;
  background: rgba(92, 72, 38, 0.05);
}

.calculator__field span,
.calculator__result span,
.calculator__result p {
  color: var(--muted);
  font-size: 0.78rem;
  margin: 0;
}

.calculator__result-top {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
}

.calculator__field input {
  width: 100%;
  border: 1px solid rgba(92, 72, 38, 0.16);
  border-radius: 12px;
  background: #fffaf1;
  color: var(--text);
  padding: 10px 12px;
}

.calculator__result {
  justify-content: center;
}

.calculator__result strong {
  font-size: 1.2rem;
  line-height: 1.1;
}

.active-series__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
}

.accordion-list {
  display: grid;
  gap: 10px;
}

.accordion-item {
  border-radius: 20px;
  overflow: hidden;
}

.accordion-item.is-selected {
  border-color: rgba(31, 26, 20, 0.3);
  box-shadow: 0 10px 24px rgba(65, 44, 10, 0.08);
}

.accordion-item summary {
  list-style: none;
  cursor: pointer;
  padding: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.accordion-item summary::-webkit-details-marker {
  display: none;
}

.accordion-item__title strong {
  display: block;
}

.accordion-item__body {
  padding: 0 16px 16px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.detail-stat {
  padding: 9px 10px;
  border-radius: 14px;
  background: rgba(92, 72, 38, 0.05);
}

.detail-stat span {
  display: block;
  color: var(--muted);
  font-size: 0.8rem;
  margin-bottom: 6px;
}

.table-wrap {
  display: none;
  margin-top: 12px;
  overflow: auto;
  border-radius: 20px;
}

.details-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}

.details-table th,
.details-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

.details-table th {
  color: var(--muted);
  font-weight: 500;
  font-size: 0.84rem;
}

@media (min-width: 768px) {
  .page-shell {
    padding: 28px 20px 56px;
  }

  .hero {
    padding: 30px;
  }

  .section {
    padding: 22px;
  }

  .card-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-auto-flow: row;
    grid-auto-columns: unset;
    overflow: visible;
  }
}

@media (max-width: 640px) {
  .page-shell {
    padding: 12px 10px 36px;
  }

  .hero,
  .section {
    padding: 16px;
    border-radius: 24px;
  }

  .control-panel,
  .toggle-group {
    width: 100%;
  }

  .toggle-group {
    display: flex;
  }

  .toggle-group__button {
    min-width: 0;
    font-size: 0.88rem;
    padding: 10px 8px;
  }

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

  .section__meta-line {
    justify-content: flex-start;
    text-align: left;
  }

  .card-strip {
    grid-auto-columns: minmax(220px, 92%);
  }

  .favorites-toolbar {
    width: 100%;
  }

  .calculator {
    grid-template-columns: 1fr;
  }

  .summary-card {
    padding: 14px;
  }

  .summary-card__price {
    font-size: 1.42rem;
  }

  .metric {
    font-size: 0.76rem;
    padding: 5px 8px;
  }

  .chart-panel {
    padding: 8px;
    border-radius: 20px;
  }

  .chart-tooltip {
    min-width: 132px;
    max-width: calc(100% - 24px);
    padding: 9px 10px;
    border-radius: 14px;
  }

  .chart-tooltip__row {
    gap: 10px;
    font-size: 0.82rem;
  }

  .chart-tooltip__date {
    margin-bottom: 6px;
  }

  .active-series::-webkit-scrollbar {
    height: 6px;
  }

  .active-series::-webkit-scrollbar-thumb {
    background: rgba(92, 72, 38, 0.16);
    border-radius: 999px;
  }

  .accordion-item summary {
    padding: 14px;
  }

  .accordion-item__body {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    padding: 0 14px 14px;
  }
}

@media (max-width: 460px) {
  .accordion-item__body {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 380px) {
  .toggle-group__button {
    font-size: 0.82rem;
  }
}

@media (min-width: 1080px) {
  .content {
    gap: 22px;
  }

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

  .accordion-list {
    display: none;
  }

  .table-wrap {
    display: block;
  }
}