:root {
  --bg: #0f1420;
  --panel: #171e2e;
  --panel-2: #1d2536;
  --border: #2a3348;
  --text: #e6e9f0;
  --text-dim: #9aa4bb;
  --accent: #4f8cff;
  --accent-2: #7c5cff;
  --good: #35c78a;
  --bad: #ef5a6f;
  --radius: 12px;
  font-size: 15px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f4f6fb;
    --panel: #ffffff;
    --panel-2: #f0f2f8;
    --border: #dfe4ee;
    --text: #1a2033;
    --text-dim: #5b6478;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", "Pretendard", "Malgun Gothic", sans-serif;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 28px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  position: sticky;
  top: 0;
  z-index: 10;
  flex-wrap: wrap;
  gap: 10px;
}

.topbar h1 { font-size: 1.25rem; margin: 0; }

.header-left { display: flex; align-items: center; gap: 14px; }

.home-link {
  font-size: 0.85rem;
  color: var(--text-dim);
  text-decoration: none;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  white-space: nowrap;
}
.home-link:hover { color: var(--text); border-color: var(--accent); }

.account-toggle { display: flex; gap: 16px; font-size: 0.9rem; color: var(--text-dim); }
.account-toggle label { display: flex; align-items: center; gap: 6px; cursor: pointer; }

.layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 20px;
  padding: 20px;
  align-items: start;
}

.config-panel {
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: sticky;
  top: 78px;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
  padding-right: 4px;
}

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  /* 좁은 화면(1열)에서는 설정창을 더 이상 옆에 고정(sticky)해둘 자리가
     없다 - sticky+높이제한을 그대로 두면 설정창이 화면에 붙박이로 뜬 채
     결과창이 그 밑으로 스크롤되며 겹쳐 보인다. 1열일 땐 그냥 위->아래로
     자연스럽게 흐르게(설정창 다음에 결과창) 되돌린다. */
  .config-panel {
    position: static;
    max-height: none;
    overflow-y: visible;
    padding-right: 0;
  }
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.card h2 {
  font-size: 1rem;
  margin: 0 0 12px;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
}

.config-panel label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-bottom: 10px;
}

.config-panel label:last-child { margin-bottom: 0; }

.config-panel input,
.config-panel select {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 0.88rem;
}

.config-panel input:focus,
.config-panel select:focus {
  outline: none;
  border-color: var(--accent);
}

.config-panel input[type="checkbox"] {
  width: 16px;
  height: 16px;
  padding: 0;
  flex: none;
  accent-color: var(--accent);
}

.actions { display: flex; gap: 10px; }

button {
  flex: 1;
  padding: 12px 16px;
  border-radius: 10px;
  border: none;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
}

button.secondary {
  background: var(--panel-2);
  color: var(--text-dim);
  border: 1px solid var(--border);
}

button:disabled { opacity: 0.6; cursor: wait; }

.results-panel { display: flex; flex-direction: column; gap: 18px; min-width: 0; }

.status-box {
  padding: 14px 18px;
  border-radius: var(--radius);
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text-dim);
}

.status-box.error { border-color: var(--bad); color: var(--bad); }

.hidden { display: none !important; }

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

.metric-block { background: var(--panel-2); border-radius: 10px; padding: 14px; }
.metric-block h3 { margin: 0 0 10px; font-size: 0.92rem; }
.metric-row { display: flex; justify-content: space-between; font-size: 0.85rem; padding: 3px 0; color: var(--text-dim); }
.metric-row span.value { color: var(--text); font-weight: 600; }
.metric-row span.value.pos { color: var(--good); }
.metric-row span.value.neg { color: var(--bad); }

#signal-content { display: flex; flex-direction: column; gap: 6px; font-size: 0.92rem; }
#signal-content .alloc { font-size: 1.05rem; font-weight: 600; color: var(--accent); }

#dca-content { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; font-size: 0.88rem; }
#dca-content .dca-item { background: var(--panel-2); border-radius: 10px; padding: 12px; }
#dca-content .dca-item .label { color: var(--text-dim); font-size: 0.78rem; }
#dca-content .dca-item .value { font-size: 1.1rem; font-weight: 700; margin-top: 4px; }

table { width: 100%; border-collapse: collapse; font-size: 0.82rem; }
table th, table td { padding: 6px 8px; text-align: right; border-bottom: 1px solid var(--border); white-space: nowrap; }
table th:first-child, table td:first-child { text-align: left; }
table th { color: var(--text-dim); font-weight: 600; }

.matrix-wrap { overflow-x: auto; }

.heat-pos { color: var(--good); }
.heat-neg { color: var(--bad); }

td.has-tooltip {
  cursor: pointer;
  text-decoration: underline dotted;
  text-decoration-color: var(--text-dim);
  text-underline-offset: 3px;
}

.cell-tooltip {
  position: fixed;
  z-index: 60;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 0.78rem;
  color: var(--text);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
  max-width: 240px;
  pointer-events: none;
}
.cell-tooltip .tt-month { font-weight: 700; margin-bottom: 3px; }
.cell-tooltip .tt-state { color: var(--text-dim); margin-bottom: 3px; }
.cell-tooltip .tt-alloc { color: var(--accent); }

.canary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
}
.canary-item { background: var(--panel-2); border-radius: 10px; padding: 10px; }
.canary-item .canary-title {
  display: flex; justify-content: space-between; align-items: baseline;
  font-size: 0.78rem; color: var(--text-dim); margin-bottom: 4px;
}
.canary-item .canary-title .value { font-size: 0.85rem; font-weight: 700; }

canvas { width: 100% !important; }

/* ── 로딩 오버레이 (백테스트 실행 중엔 다른 조작 막기) ── */
.loading-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.65);
  display: flex; align-items: center; justify-content: center;
  z-index: 100;
  cursor: wait;
}
.loading-box {
  display: flex; flex-direction: column; align-items: center; gap: 16px;
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px 40px; text-align: center; max-width: 320px;
}
.spinner {
  width: 36px; height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
#loading-message { font-size: 0.88rem; color: var(--text-dim); line-height: 1.5; }