:root {
  --bg: #12151b;
  --surface: #1b2029;
  --surface-hi: #232a36;
  --border: #2c3444;
  --text: #edeff3;
  --text-muted: #8a93a6;
  --gain: #e5484d;   /* 한국 관례: 상승/수익 = 빨강 */
  --loss: #4c8dff;   /* 한국 관례: 하락/손실 = 파랑 */
  --accent: #f2b84b;
  --radius: 10px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Pretendard", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo",
               "Noto Sans KR", "Malgun Gothic", "맑은 고딕", sans-serif;
  font-variant-numeric: tabular-nums;
  -webkit-tap-highlight-color: transparent;
}

/* ---------------- 상단 고정 헤더 ---------------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(18, 21, 27, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding-top: env(safe-area-inset-top);
}

.topbar-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px 10px;
}

.app-title {
  font-size: 17px;
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.01em;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.last-updated {
  font-size: 11.5px;
  color: var(--text-muted);
}

.btn-sync {
  display: flex;
  align-items: center;
  gap: 5px;
  background: var(--surface-hi);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 7px 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.btn-sync:active { transform: scale(0.96); }

.btn-sync-icon {
  display: inline-block;
  transition: transform 0.6s ease;
}

.btn-sync.syncing .btn-sync-icon {
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.tabs {
  display: flex;
  gap: 4px;
  padding: 0 12px;
  overflow-x: auto;
  scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }

.tab-btn {
  flex: 0 0 auto;
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 10px 14px;
  font-size: 14px;
  font-weight: 600;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
}

.tab-btn.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

/* ---------------- 본문 ---------------- */
#app {
  padding: 16px;
  max-width: 960px;
  margin: 0 auto;
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* 요약 카드 */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}

@media (min-width: 640px) {
  .summary-grid { grid-template-columns: repeat(4, 1fr); }
}

.summary-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 14px 12px;
}

.summary-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.summary-value {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.summary-value.gain { color: var(--gain); }
.summary-value.loss { color: var(--loss); }

/* 기간 선택 */
.period-selector {
  display: flex;
  gap: 6px;
  margin-bottom: 8px;
}

.period-btn {
  flex: 1;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 8px 0;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.period-btn.active {
  color: var(--bg);
  background: var(--accent);
  border-color: var(--accent);
}

.period-summary {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

/* 차트 영역 */
.chart-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 12px;
}

@media (min-width: 760px) {
  .chart-grid { grid-template-columns: 1.3fr 1fr; }
}

.panel-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 12px;
}

.panel-box-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.chart-wrap {
  position: relative;
  height: 220px;
}

.pie-wrap { height: 180px; }

.pie-legend {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.pie-legend li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--text-muted);
}

.pie-legend .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex: 0 0 auto;
}

.pie-legend .legend-name { color: var(--text); flex: 1; }

/* 테이블 (모바일 가로 스크롤) */
.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 0 -14px;
  padding: 0 14px;
}

.data-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 13px;
}

.data-table th {
  text-align: right;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 12px;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.data-table th:first-child, .data-table td:first-child {
  text-align: left;
}

.data-table td {
  text-align: right;
  padding: 9px 10px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.data-table tbody tr:hover { background: var(--surface-hi); }

.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 700;
}

.tag.bid, .tag.deposit { background: rgba(229,72,77,0.15); color: var(--gain); }
.tag.ask, .tag.withdraw { background: rgba(76,141,255,0.15); color: var(--loss); }

.pagination {
  display: flex;
  justify-content: center;
  gap: 6px;
  padding-top: 12px;
}

.pagination button {
  background: var(--surface-hi);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
}

.pagination button:disabled {
  opacity: 0.4;
  cursor: default;
}

.pagination .page-info {
  align-self: center;
  font-size: 12.5px;
  color: var(--text-muted);
  padding: 0 6px;
}

/* 토스트 */
.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%) translateY(20px);
  background: var(--surface-hi);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 13px;
  opacity: 0;
  pointer-events: none;
  transition: all 0.25s ease;
  z-index: 100;
  white-space: nowrap;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.empty-row td {
  text-align: center;
  color: var(--text-muted);
  padding: 24px 10px;
}