:root {
  --bg: #0f1115;
  --card: #171a21;
  --card-hover: #1d212b;
  --border: #262b35;
  --text: #e6e9ef;
  --sub: #8b92a3;
  --accent: #4f8cff;
  /* US market convention: green = up, red = down (opposite of KR convention). */
  --up: #26c281;
  --down: #ff5c5c;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Pretendard", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

header {
  padding: 24px 24px 12px;
  border-bottom: 1px solid var(--border);
}
header h1 { margin: 0 0 4px; font-size: 22px; }
header .sub { margin: 0; color: var(--sub); font-size: 13px; }

#app { max-width: 1100px; margin: 0 auto; padding: 20px 24px 60px; }

.search-wrap { position: relative; margin-bottom: 16px; }
#search-input {
  width: 100%;
  padding: 12px 16px;
  font-size: 15px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
}
#search-input:focus { outline: none; border-color: var(--accent); }

.suggestions {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  z-index: 10;
  max-height: 320px;
  overflow-y: auto;
}
.suggestions li {
  list-style: none;
  padding: 10px 16px;
  display: flex;
  justify-content: space-between;
  cursor: pointer;
  font-size: 14px;
}
.suggestions li:hover { background: var(--card-hover); }
.suggestions .muted { color: var(--sub); font-size: 12px; }
.hidden { display: none !important; }

.category-bar {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 12px;
  margin-bottom: 16px;
}
.category-pill {
  flex: 0 0 auto;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--sub);
  font-size: 13px;
  cursor: pointer;
  white-space: nowrap;
}
.category-pill.active { background: var(--accent); color: white; border-color: var(--accent); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
}

.etf-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  cursor: pointer;
  transition: background 0.15s, transform 0.15s;
}
.etf-card:hover { background: var(--card-hover); transform: translateY(-1px); }

.etf-card .row-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 2px;
}
.etf-card .symbol { font-weight: 700; font-size: 15px; }
.etf-card .category { font-size: 11px; color: var(--sub); background: rgba(255,255,255,0.05); padding: 2px 6px; border-radius: 6px; }
.etf-card .name {
  font-size: 12px;
  color: var(--sub);
  margin-bottom: 10px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.etf-card .sparkline { width: 100%; height: 40px; display: block; margin-bottom: 8px; }

.etf-card .row-bottom { display: flex; justify-content: space-between; align-items: baseline; }
.etf-card .price { font-size: 16px; font-weight: 600; }
.etf-card .change { font-size: 13px; font-weight: 600; }
.up { color: var(--up); }
.down { color: var(--down); }
.flat { color: var(--sub); }

.etf-card.loading .price, .etf-card.loading .change { color: var(--sub); }

.empty { text-align: center; color: var(--sub); padding: 40px 0; }

/* View toolbar */
.view-toolbar { display: flex; gap: 8px; margin-bottom: 14px; }
.filter-btn, .view-toggle-btn {
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
}
.view-toggle-btn.active { background: var(--accent); border-color: var(--accent); color: white; }
.filter-count {
  display: inline-block;
  background: var(--accent);
  color: white;
  border-radius: 999px;
  font-size: 11px;
  padding: 1px 7px;
  margin-left: 4px;
}

/* Table view */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
#table { border-collapse: collapse; width: 100%; font-size: 13px; white-space: nowrap; }
#table thead th {
  position: sticky;
  top: 0;
  background: var(--card);
  color: var(--sub);
  text-align: right;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  user-select: none;
}
#table thead th:first-child, #table thead th:nth-child(2) { text-align: left; }
#table thead th.sorted { color: var(--accent); }
#table tbody td { padding: 9px 14px; text-align: right; border-bottom: 1px solid var(--border); }
#table tbody td:first-child, #table tbody td:nth-child(2) { text-align: left; }
#table tbody tr { cursor: pointer; }
#table tbody tr:hover { background: var(--card-hover); }
#table tbody td:first-child { font-weight: 700; }

/* Filter modal */
.filter-modal {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  max-width: 720px;
  width: 100%;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  padding: 20px 24px;
}
.filter-modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.filter-modal-header h2 { margin: 0; font-size: 17px; }
.filter-search {
  padding: 9px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 13px;
  margin-bottom: 14px;
}
.filter-groups { overflow-y: auto; flex: 1; }
.filter-group { margin-bottom: 16px; }
.filter-group h3 { font-size: 12px; color: var(--sub); text-transform: uppercase; letter-spacing: 0.04em; margin: 0 0 8px; }
.filter-group-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 6px 10px; }
.filter-item { display: flex; align-items: center; gap: 6px; font-size: 13px; cursor: pointer; }
.filter-item input { accent-color: var(--accent); }
.filter-modal-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border);
  padding-top: 14px;
  margin-top: 10px;
}
.ghost-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--sub);
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 13px;
  cursor: pointer;
  margin-right: 8px;
}
.apply-btn {
  background: var(--accent);
  color: white;
  border: none;
  padding: 8px 18px;
  border-radius: 8px;
  font-size: 13px;
  cursor: pointer;
}
.filter-unavailable-note {
  font-size: 12px;
  color: var(--sub);
  background: rgba(255,255,255,0.04);
  border-radius: 8px;
  padding: 10px 12px;
  margin-bottom: 14px;
  line-height: 1.5;
}

/* Detail overlay */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 100;
}
.detail-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  max-width: 480px;
  width: 100%;
  padding: 24px;
  position: relative;
  max-height: 85vh;
  overflow-y: auto;
}
.close-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  background: transparent;
  border: none;
  color: var(--sub);
  font-size: 18px;
  cursor: pointer;
}

.detail-header .symbol { font-size: 22px; font-weight: 700; }
.detail-header .name { color: var(--sub); font-size: 13px; margin-top: 2px; }
.detail-price { font-size: 30px; font-weight: 700; margin: 14px 0 2px; }
.detail-chart { width: 100%; height: 140px; margin: 14px 0; display: block; }

.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 16px;
  margin-top: 16px;
  font-size: 13px;
}
.stat-grid .label { color: var(--sub); }
.stat-grid .value { font-weight: 600; text-align: right; }

.range-toggle { display: flex; gap: 6px; margin-top: 10px; }
.range-toggle button {
  flex: 1;
  padding: 6px 0;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--sub);
  font-size: 12px;
  cursor: pointer;
}
.range-toggle button.active { background: var(--accent); color: white; border-color: var(--accent); }

.detail-error { color: var(--sub); text-align: center; padding: 30px 0; }