:root {
  --color-bg: #f7f7f8;
  --color-surface: #ffffff;
  --color-border: #e3e3e6;
  --color-text: #1c1c1e;
  --color-text-muted: #7a7a80;
  --color-primary: #1c7ed6;
  --color-primary-dark: #1864ab;
  --color-danger: #c92a2a;
  --color-danger-bg: #fff0f0;
  --color-success: #2b8a3e;
  --color-warn: #b1650a;
  --color-warn-bg: #fff8e6;
  --radius: 10px;
  --gap: 12px;
}

* {
  box-sizing: border-box;
}

/* .form-grid label 같은 클래스 선택자가 브라우저 기본 [hidden] 규칙보다 우선순위가 높아서
   display:flex가 hidden을 덮어버린다. 숨김은 항상 이겨야 하므로 !important를 준다. */
[hidden] {
  display: none !important;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
}

main {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 12px 24px;
}

h2 {
  margin: 0 0 6px;
  font-size: 1.02rem;
}

h3 {
  margin: 18px 0 6px;
  font-size: 0.92rem;
  color: var(--color-text);
}

p {
  margin: 0 0 8px;
}

/* ------------------------------------------------------------------ 헤더 */

.app-header {
  padding: 18px 12px 10px;
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
}

.app-header h1 {
  margin: 0 0 4px;
  font-size: 1.3rem;
}

.app-header__sub {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.rate-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap);
  margin-top: 14px;
}

.rate-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 12px 10px;
}

.rate-card__label {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.rate-card__label span {
  opacity: 0.75;
}

.rate-card__value {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.rate-card__value small {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-left: 2px;
}

.rate-card__delta {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* 국내 매매기준율을 대표값으로 쓸 때 ECB 값을 작게 병기 */
.rate-card__sub {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  opacity: 0.85;
  margin-top: 2px;
}

code {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.85em;
  background: var(--color-bg);
  padding: 1px 5px;
  border-radius: 4px;
}

.data-status {
  margin-top: 8px;
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.alert-banner {
  margin-top: 10px;
  padding: 9px 12px;
  border-radius: var(--radius);
  background: var(--color-warn-bg);
  border: 1px solid #f2d9a8;
  color: var(--color-warn);
  font-size: 0.85rem;
  text-align: left;
}

/* -------------------------------------------------------------------- 탭 */

.mode-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 14px;
}

.mode-tab {
  background: var(--color-surface);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 7px 15px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}

.mode-tab[aria-selected="true"] {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* ------------------------------------------------------------------ 카드 */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: var(--gap);
}

/* 설정·데이터는 매일 볼 것이 아니라 접어 둔다. 접힌 상태에서는 제목 한 줄만 차지한다. */
.card--fold > summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

.card--fold > summary::-webkit-details-marker {
  display: none;
}

.card--fold > summary::before {
  content: "▸ ";
  color: var(--color-muted);
}

.card--fold[open] > summary::before {
  content: "▾ ";
}

.card--fold[open] > summary {
  margin-bottom: 10px;
}

.card--fold h3 {
  margin-top: 18px;
}

.card--fold > summary + h3 {
  margin-top: 0;
}

.card--warn {
  background: var(--color-warn-bg);
  border-color: #f2d9a8;
}

.card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}

.card__head h2 {
  margin: 0;
}

/* -------------------------------------------------------------- 세그먼트 */

.seg {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.seg button {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 5px 12px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  cursor: pointer;
}

.seg button.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  font-weight: 600;
}

.seg--range {
  margin: 8px 0;
}

/* ------------------------------------------------------------------ 차트 */

.chart-box {
  width: 100%;
}

.chart {
  width: 100%;
  height: auto;
  display: block;
  overflow: visible;
}

.chart__grid {
  stroke: var(--color-border);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}

.chart__area {
  fill: rgba(28, 126, 214, 0.09);
  stroke: none;
}

.chart__line {
  fill: none;
  stroke: var(--color-primary);
  stroke-width: 1.6;
  vector-effect: non-scaling-stroke;
}

.chart__ma {
  fill: none;
  stroke-width: 1.2;
  stroke-dasharray: 4 3;
  vector-effect: non-scaling-stroke;
}

.chart__ma--0 {
  stroke: #f08c00;
}

.chart__ma--1 {
  stroke: #7048e8;
}

.chart__marker {
  fill: #e8590c;
  stroke: #fff;
  stroke-width: 1.4;
}

.chart__last {
  fill: var(--color-primary-dark);
}

.chart__ylabel,
.chart__xlabel {
  font-size: 11px;
  fill: var(--color-text-muted);
}

.chart-legend {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin: 6px 0 0;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.key {
  display: inline-block;
  width: 14px;
  height: 3px;
  border-radius: 2px;
  margin-right: 3px;
  vertical-align: middle;
}

.key--line { background: var(--color-primary); }
.key--ma0 { background: #f08c00; }
.key--ma1 { background: #7048e8; }
.key--marker { background: #e8590c; width: 8px; height: 8px; border-radius: 50%; }

/* -------------------------------------------------------------------- 표 */

.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.83rem;
  min-width: 100%;
}

.data-table.mt {
  margin-top: 12px;
}

.data-table th,
.data-table td {
  padding: 7px 8px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
  vertical-align: top;
}

.data-table thead th {
  font-size: 0.76rem;
  color: var(--color-text-muted);
  font-weight: 600;
  border-bottom-width: 1px;
}

.data-table tbody th {
  font-weight: 600;
}

/* -------------------------------------------------------------- 통계 그리드 */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-top: 10px;
}

.stat-grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

.stat-grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.stat {
  background: var(--color-bg);
  border-radius: 8px;
  padding: 9px 10px;
}

.stat__label {
  font-size: 0.72rem;
  color: var(--color-text-muted);
}

.stat__value {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.stat__sub {
  font-size: 0.72rem;
  color: var(--color-text-muted);
}

.pos { color: var(--color-success); }
.neg { color: var(--color-danger); }
.muted { color: var(--color-text-muted); }
.small { font-size: 0.8rem; }
.mt { margin-top: 10px; }

.note {
  background: var(--color-bg);
  border-left: 3px solid var(--color-primary);
  border-radius: 6px;
  padding: 9px 11px;
  font-size: 0.83rem;
}

.note--warn {
  background: var(--color-warn-bg);
  border-left-color: var(--color-warn);
  color: var(--color-warn);
}

ul.tight {
  margin: 6px 0 0;
  padding-left: 18px;
  font-size: 0.85rem;
}

ul.tight li {
  margin-bottom: 4px;
}

/* ------------------------------------------------------------------ 폼 */

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 10px;
}

.form-grid .span2 {
  grid-column: 1 / -1;
}

.form-grid label,
.form-row label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.form-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.form-row input {
  flex: 1;
  min-width: 110px;
}

.form-row label.grow {
  flex: 1;
  min-width: 140px;
}

input,
select {
  font: inherit;
  font-size: 0.88rem;
  padding: 8px 10px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: #fff;
  color: var(--color-text);
  width: 100%;
}

input:focus,
select:focus {
  outline: 2px solid rgba(28, 126, 214, 0.35);
  outline-offset: 1px;
  border-color: var(--color-primary);
}

button {
  font: inherit;
  font-size: 0.86rem;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 8px;
  border: 1px solid var(--color-primary);
  background: var(--color-primary);
  color: #fff;
  cursor: pointer;
}

button:hover:not(:disabled) {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

button.ghost {
  background: var(--color-surface);
  color: var(--color-text-muted);
  border-color: var(--color-border);
}

button.danger {
  background: var(--color-surface);
  color: var(--color-danger);
  border-color: #f0c2c2;
}

.link-btn {
  background: none;
  border: none;
  color: var(--color-text-muted);
  padding: 0 0 0 8px;
  font-size: 0.78rem;
  font-weight: 500;
  text-decoration: underline;
}

.link-btn:hover {
  background: none;
  color: var(--color-danger);
}

.file-btn {
  display: inline-flex;
  align-items: center;
  font-size: 0.86rem;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  cursor: pointer;
}

.form-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

.form-actions--left {
  justify-content: flex-start;
  margin-top: 10px;
}

/* ---------------------------------------------------------------- 목록류 */

.plain-list {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  font-size: 0.85rem;
}

.plain-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding: 7px 0;
  border-bottom: 1px solid var(--color-border);
}

.plain-list li.hit {
  color: var(--color-warn);
  font-weight: 600;
}

.plan-item {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 11px;
  margin-bottom: 10px;
}

.plan-item__head {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  margin-bottom: 8px;
}

.plan-item__head .link-btn {
  margin-left: auto;
}

.plan-item__body {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 6px;
}

.progress {
  height: 6px;
  background: var(--color-bg);
  border-radius: 3px;
  overflow: hidden;
}

.progress__bar {
  height: 100%;
  background: var(--color-primary);
}

.dca-block {
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
}

.dca-block:last-child {
  border-bottom: none;
}

.dca-block h3 {
  margin-top: 0;
}

.badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 1px 7px;
  border-radius: 999px;
}

.badge--warn {
  background: var(--color-warn-bg);
  color: var(--color-warn);
  border: 1px solid #f2d9a8;
}

.badge--info {
  background: #e7f2fd;
  color: var(--color-primary-dark);
  border: 1px solid #c5dff8;
}

/* 표에서 '내일 적용분'처럼 강조할 행 */
.data-table tr.row-hi > th,
.data-table tr.row-hi > td {
  background: #f2f8ff;
}

/* ------------------------------------------------------- 상태 메시지/푸터 */

.error-box {
  background: var(--color-danger-bg);
  border: 1px solid #f0c2c2;
  color: var(--color-danger);
  border-radius: var(--radius);
  padding: 10px 12px;
  font-size: 0.85rem;
  margin-bottom: var(--gap);
}

.loading {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  padding: 18px 0;
}

.app-footer {
  max-width: 860px;
  margin: 0 auto;
  padding: 4px 14px 30px;
  font-size: 0.74rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.app-footer p {
  margin: 0 0 6px;
}

/* ------------------------------------------------------------------ 모바일 */

@media (max-width: 560px) {
  .stat-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* 어제·오늘·내일은 나란히 놓여야 비교가 되므로 좁은 화면에서도 3칸을 유지한다. */
  .stat-grid--3 {
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
  }

  .stat-grid--3 .stat {
    padding: 8px 7px;
  }

  .stat-grid--3 .stat__value {
    font-size: 0.88rem;
  }

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

  .rate-card__value {
    font-size: 1.3rem;
  }

  .mode-tab {
    padding: 7px 12px;
    font-size: 0.8rem;
  }
}