:root {
  --bg: #f4f6fa;
  --surface: #ffffff;
  --surface-2: #eef1f6;
  --border: #dde2ea;
  --text: #141820;
  --text-2: #5b6474;
  --accent: #2f6fed;
  --accent-soft: rgba(47, 111, 237, 0.12);
  --up: #e0322f;
  --up-soft: rgba(224, 50, 47, 0.16);
  --down: #1f63e0;
  --down-soft: rgba(31, 99, 224, 0.16);
  --flat: #6b7380;
  --gain: #f0a63a;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06);
  --font: "Pretendard", "Apple SD Gothic Neo", "Malgun Gothic", system-ui, -apple-system, "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1116;
    --surface: #161a22;
    --surface-2: #1d222c;
    --border: #2a303c;
    --text: #e8ebf1;
    --text-2: #97a0b0;
    --accent: #5b8cff;
    --accent-soft: rgba(91, 140, 255, 0.16);
    --up: #ff5a55;
    --up-soft: rgba(255, 90, 85, 0.2);
    --down: #4d8dff;
    --down-soft: rgba(77, 141, 255, 0.2);
    --flat: #8a93a3;
    --shadow: none;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.5;
}
a { color: inherit; }
button { font: inherit; }
[hidden] { display: none !important; }

.wrap { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 16px; }
.muted { color: var(--text-2); }
.small { font-size: 0.82rem; }
.center { text-align: center; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}
.up { color: var(--up); }
.down { color: var(--down); }
.flat { color: var(--flat); }

/* ---- 상단 바 ---- */
.topbar {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  min-height: 56px;
}
.brand {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 800; font-size: 1.15rem; text-decoration: none; letter-spacing: -0.01em;
}
.brand-mark { width: 26px; height: 26px; flex: none; }
.brand-mark rect { fill: var(--accent); }
.brand-mark path { fill: none; stroke: #fff; stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }

.fx { display: flex; align-items: baseline; gap: 6px; white-space: nowrap; font-variant-numeric: tabular-nums; }
.fx-label { color: var(--text-2); font-size: 0.85rem; }
.fx-rate { font-size: 1.02rem; }
.fx-change { font-size: 0.85rem; font-weight: 600; cursor: help; }

.nav { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; }
.nav::-webkit-scrollbar { display: none; }
.nav-link {
  padding: 10px 12px; text-decoration: none; color: var(--text-2);
  font-weight: 600; font-size: 0.92rem; white-space: nowrap;
  border-bottom: 2px solid transparent;
}
.nav-link:hover { color: var(--text); }
.nav-link.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ---- 툴바 ---- */
.toolbar {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 16px;
  padding: 14px 0 10px; font-size: 0.85rem;
}
.toolbar-left, .toolbar-right { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 12px; }
.refresh-info { font-variant-numeric: tabular-nums; }
.source-status { display: inline-flex; gap: 10px; color: var(--text-2); }
.src-dot { display: inline-flex; align-items: center; gap: 5px; }
.src-dot::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--flat);
}
.src-dot.ok::before { background: #22a55a; }
.src-dot.fail { color: var(--up); }
.src-dot.fail::before { background: var(--up); }

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 12px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  cursor: pointer; font-size: 0.85rem; font-weight: 600;
}
.btn:hover { border-color: var(--accent); }
.btn:disabled { opacity: 0.6; cursor: progress; }
.btn svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.btn.spinning svg { animation: spin 0.9s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- 탭 ---- */
.tabs { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 2px; scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
.tab {
  padding: 8px 14px; border-radius: 999px; text-decoration: none; white-space: nowrap;
  background: var(--surface); border: 1px solid var(--border); color: var(--text-2);
  font-weight: 600; font-size: 0.9rem;
}
.tab:hover { color: var(--text); }
.tab.active { background: var(--accent); border-color: var(--accent); color: #fff; }

.note { color: var(--text-2); font-size: 0.85rem; margin: 10px 0 14px; }

/* ---- 카드 그리드 ---- */
.grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
@media (max-width: 900px) { .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; } }

.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 14px; min-width: 0;
  display: flex; flex-direction: column; gap: 2px;
}
.card.is-error { opacity: 0.7; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 6px; }
.card-name { margin: 0; font-size: 0.98rem; font-weight: 700; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card-src {
  flex: none; font-size: 0.68rem; font-weight: 700; letter-spacing: 0.04em;
  color: var(--text-2); background: var(--surface-2); border-radius: 4px; padding: 1px 5px;
}
.card-src:empty { display: none; }
.card-ticker { margin: 0; font-size: 0.72rem; color: var(--text-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card-price {
  margin: 8px 0 0; font-size: 1.32rem; font-weight: 800; letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums; border-radius: 6px; padding: 0 4px; margin-left: -4px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.card-sub { margin: 0; font-size: 0.8rem; color: var(--text-2); font-variant-numeric: tabular-nums; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card-foot {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 8px;
  margin-top: 10px; padding-top: 10px; border-top: 1px dashed var(--border);
}
.card-chg { font-weight: 700; font-size: 0.92rem; font-variant-numeric: tabular-nums; white-space: nowrap; }
.card-vol { display: flex; flex-direction: column; align-items: flex-end; min-width: 0; text-align: right; }
.card-vol-label { font-size: 0.68rem; color: var(--text-2); }
.card-vol-value { font-size: 0.8rem; font-variant-numeric: tabular-nums; white-space: nowrap; }

.flash-up { animation: flash-up 0.9s ease-out; }
.flash-down { animation: flash-down 0.9s ease-out; }
@keyframes flash-up { from { background: var(--up-soft); color: var(--up); } to { background: transparent; } }
@keyframes flash-down { from { background: var(--down-soft); color: var(--down); } to { background: transparent; } }
@media (prefers-reduced-motion: reduce) {
  .flash-up, .flash-down, .btn.spinning svg { animation: none; }
}

@media (max-width: 480px) {
  .card { padding: 12px 10px; }
  .card-price { font-size: 1.12rem; }
  .card-foot { flex-direction: column; align-items: flex-start; gap: 2px; }
  .card-vol { align-items: flex-start; text-align: left; }
  .fx-label { display: none; }
}

/* ---- 패널 / 표 ---- */
.page-title { font-size: 1.3rem; margin: 6px 0 14px; }
.panel {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 16px; margin-bottom: 16px;
}
.panel-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 4px 12px; margin-bottom: 10px; }
.panel-head h2 { margin: 0; font-size: 1.05rem; }
.panel-head h2 small { font-weight: 500; color: var(--text-2); font-size: 0.8rem; margin-left: 4px; }

.table-wrap { overflow-x: auto; margin: 0 -16px; padding: 0 16px; }
.table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; font-size: 0.9rem; }
.table th, .table td { padding: 10px 8px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: middle; white-space: nowrap; }
.table thead th { font-size: 0.78rem; font-weight: 600; color: var(--text-2); background: var(--surface-2); }
.table thead th small { display: block; font-weight: 500; }
.table tbody tr:last-child > * { border-bottom: 0; }
.table .num { text-align: right; }
.table td small, .table th small { display: block; font-size: 0.72rem; color: var(--text-2); font-weight: 500; }
.table .sym { font-weight: 700; }
.table .rank { color: var(--text-2); width: 2.5em; }
.table .addr a { font-family: ui-monospace, "SFMono-Regular", Consolas, monospace; font-size: 0.85rem; color: var(--accent); text-decoration: none; }
.table .addr a:hover { text-decoration: underline; }

.ls-bar {
  display: block; width: 90px; height: 5px; margin: 4px 0 2px auto; border-radius: 3px;
  background: var(--down); overflow: hidden;
}
.ls-bar-long { display: block; height: 100%; background: var(--up); }
.ls-caption { display: block; font-size: 0.72rem; color: var(--text-2); }

/* ---- 시뮬레이터 ---- */
.sim-form { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.sim-form label { display: flex; flex-direction: column; gap: 6px; font-size: 0.85rem; color: var(--text-2); font-weight: 600; }
.sim-form input {
  width: 100%; padding: 10px 12px; font: inherit; font-size: 1rem; color: var(--text);
  background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px;
  font-variant-numeric: tabular-nums;
}
.sim-form input:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
.sim-summary { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 16px 0; }
.sim-stat { background: var(--surface-2); border-radius: 10px; padding: 12px 14px; min-width: 0; }
.sim-stat-label { display: block; font-size: 0.8rem; color: var(--text-2); }
.sim-stat-value { display: block; font-size: 1.15rem; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.sim-stat.accent .sim-stat-value { color: var(--accent); }
.sim-stat.up .sim-stat-value { color: var(--up); }
.sim-stat.down .sim-stat-value { color: var(--down); }
.sim-bar-cell { width: 40%; min-width: 120px; }
.sim-bar { display: flex; height: 10px; border-radius: 5px; background: var(--surface-2); overflow: hidden; }
.sim-bar-principal { background: var(--accent); }
.sim-bar-gain { background: var(--gain); }
.legend { display: inline-flex; align-items: center; gap: 4px; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-left: 6px; }
.legend i:first-child { margin-left: 0; }
.lg-principal { background: var(--accent); }
.lg-gain { background: var(--gain); }
@media (max-width: 640px) {
  .sim-form, .sim-summary { grid-template-columns: 1fr; }
}

/* ---- 푸터 ---- */
.footer { margin-top: 32px; padding: 24px 0 40px; border-top: 1px solid var(--border); color: var(--text-2); font-size: 0.8rem; }
.footer p { margin: 0 0 8px; }
.footer strong, .footer b { color: var(--text); }