/* ── Reset & Base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-base:    #0a0e1a;
  --bg-card:    #111827;
  --bg-deep:    #0f172a;
  --border:     #1e293b;
  --text-main:  #f1f5f9;
  --text-sub:   #94a3b8;
  --text-muted: #64748b;
  --blue:       #3b82f6;
  --green:      #10b981;
  --yellow:     #f59e0b;
  --red:        #ef4444;
  --purple:     #8b5cf6;
  --cyan:       #06b6d4;
  --radius:     10px;
}

html { font-size: 14px; }
body {
  background: var(--bg-base);
  color: var(--text-main);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  min-height: 100vh;
  padding-bottom: 40px;
}

/* ── Header ──────────────────────────────────────────────────────────────── */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-logo { display: flex; align-items: center; gap: 10px; }
.logo-icon { font-size: 1.4rem; }
.logo-text { font-size: 1rem; font-weight: 700; color: var(--text-main); letter-spacing: .02em; }
.header-actions { display: flex; gap: 8px; }

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
  padding: 7px 16px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 500;
  transition: all .15s;
}
.btn-primary  { background: var(--blue);  color: #fff; }
.btn-primary:hover  { background: #2563eb; }
.btn-outline  { background: transparent; color: var(--text-sub); border: 1px solid var(--border); }
.btn-outline:hover  { border-color: var(--blue); color: var(--blue); }
.btn-sm { padding: 4px 10px; font-size: 0.78rem; background: var(--bg-deep); color: var(--text-muted); border: 1px solid var(--border); border-radius: 5px; cursor: pointer; }
.btn-sm:hover { color: var(--text-main); }

/* ── Section Card ────────────────────────────────────────────────────────── */
.section-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 24px;
  margin: 12px 16px;
}

/* ── Time Range ──────────────────────────────────────────────────────────── */
.time-range-row {
  display: flex;
  align-items: center;
  gap: 12px;
}
.time-label { color: var(--text-sub); font-size: 0.82rem; white-space: nowrap; }
.time-badge {
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 3px 10px;
  font-size: 0.82rem;
  color: var(--blue);
  white-space: nowrap;
}
.time-meta { color: var(--text-muted); font-size: 0.78rem; white-space: nowrap; }

.slider-track-wrap {
  position: relative;
  flex: 1;
  height: 28px;
  display: flex;
  align-items: center;
}
.range-input {
  position: absolute;
  width: 100%;
  height: 4px;
  background: transparent;
  -webkit-appearance: none;
  pointer-events: none;
}
.range-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--blue);
  cursor: pointer;
  pointer-events: all;
  border: 2px solid #fff;
  box-shadow: 0 0 6px rgba(59,130,246,.5);
}
.range-input::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--blue);
  cursor: pointer;
  pointer-events: all;
  border: 2px solid #fff;
}
.slider-fill {
  position: absolute;
  height: 4px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  border-radius: 2px;
  pointer-events: none;
}
/* Track base */
.slider-track-wrap::before {
  content: '';
  position: absolute;
  width: 100%;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
}

/* ── KPI Grid ────────────────────────────────────────────────────────────── */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  padding: 0 16px;
  margin: 12px 0;
}
.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}
.kpi-label { font-size: 0.75rem; color: var(--text-muted); margin-bottom: 8px; }
.kpi-value { font-size: 1.7rem; font-weight: 700; color: var(--blue); line-height: 1.1; }
.kpi-green  { color: var(--green); }
.kpi-yellow { color: var(--yellow); }
.kpi-purple { color: var(--purple); }
.kpi-cyan   { color: var(--cyan); }
.kpi-desc   { font-size: 0.72rem; color: var(--text-muted); margin-top: 6px; }

/* ── Grade Overview Bar ──────────────────────────────────────────────────── */
.grade-overview-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px 24px;
}
.grade-overview-label { color: var(--text-muted); font-size: 0.8rem; }
.grade-sep { color: var(--border); margin: 0 4px; }
.grade-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.78rem;
  border: 1px solid transparent;
}
.grade-blockbuster { color: #f59e0b; border-color: rgba(245,158,11,.3); background: rgba(245,158,11,.08); }
.grade-top         { color: #3b82f6; border-color: rgba(59,130,246,.3);  background: rgba(59,130,246,.08); }
.grade-normal      { color: #94a3b8; border-color: rgba(148,163,184,.3); background: rgba(148,163,184,.08); }
.grade-slow        { color: #ef4444; border-color: rgba(239,68,68,.3);   background: rgba(239,68,68,.08); }
.grade-rocket      { color: #10b981; border-color: rgba(16,185,129,.3);  background: rgba(16,185,129,.08); }
.grade-growth      { color: #06b6d4; border-color: rgba(6,182,212,.3);   background: rgba(6,182,212,.08); }
.grade-stable      { color: #94a3b8; border-color: rgba(148,163,184,.3); background: rgba(148,163,184,.08); }
.grade-decline     { color: #f59e0b; border-color: rgba(245,158,11,.3);  background: rgba(245,158,11,.08); }
.grade-crash       { color: #ef4444; border-color: rgba(239,68,68,.3);   background: rgba(239,68,68,.08); }

/* ── Threshold Panel ─────────────────────────────────────────────────────── */
.threshold-section { padding: 0; }
.threshold-toggle {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 24px;
  cursor: pointer;
  color: var(--text-sub);
  font-size: 0.85rem;
  user-select: none;
}
.threshold-toggle:hover { color: var(--text-main); }
.threshold-panel { padding: 0 24px 20px; border-top: 1px solid var(--border); }

.preset-row { display: flex; align-items: center; gap: 8px; padding: 14px 0 8px; flex-wrap: wrap; }
.preset-label { color: var(--text-muted); font-size: 0.8rem; }
.preset-btn {
  padding: 5px 14px;
  border-radius: 5px;
  border: 1px solid var(--border);
  background: var(--bg-deep);
  color: var(--text-sub);
  cursor: pointer;
  font-size: 0.8rem;
  transition: all .15s;
}
.preset-btn:hover, .preset-btn.active {
  border-color: var(--blue);
  color: var(--blue);
  background: rgba(59,130,246,.1);
}
.preset-desc { color: var(--text-muted); font-size: 0.78rem; margin-bottom: 12px; }

.stats-row { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }
.stat-chip {
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 5px 12px;
  font-size: 0.78rem;
  color: var(--text-muted);
}
.stat-chip span { color: var(--text-main); font-weight: 600; margin-left: 4px; }

.custom-sliders { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 12px; }
.slider-group { display: flex; flex-direction: column; gap: 4px; }
.slider-group label { font-size: 0.78rem; color: var(--text-sub); display: flex; justify-content: space-between; }
.slider-group label span { color: var(--blue); font-weight: 600; }
.th-hint { font-size: 0.72rem; color: var(--text-muted); }
.slider-group input[type=range] {
  width: 100%;
  accent-color: var(--blue);
  cursor: pointer;
}

/* ── Chart Section ───────────────────────────────────────────────────────── */
.chart-section { padding: 16px 24px; }
.chart-header {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.chart-title { font-size: 0.9rem; font-weight: 600; color: var(--text-sub); border-left: 3px solid var(--blue); padding-left: 10px; }
.chart-tabs { display: flex; gap: 4px; }
.tab-btn {
  padding: 6px 14px;
  border-radius: 5px;
  border: 1px solid var(--border);
  background: var(--bg-deep);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.8rem;
  transition: all .15s;
}
.tab-btn:hover { color: var(--text-sub); }
.tab-btn.active { background: var(--blue); color: #fff; border-color: var(--blue); }

.color-mode-switch { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.color-mode-label { font-size: 0.78rem; color: var(--text-muted); }
.mode-btn {
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--bg-deep);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.78rem;
  transition: all .15s;
}
.mode-btn.active { border-color: var(--blue); color: var(--blue); background: rgba(59,130,246,.1); }

.scatter-legend {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}
.legend-group { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.legend-title { font-size: 0.75rem; color: var(--text-muted); }
.legend-item { display: flex; align-items: center; gap: 5px; font-size: 0.78rem; color: var(--text-sub); }
.legend-dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }

.chart-desc { font-size: 0.78rem; color: var(--text-muted); margin-bottom: 10px; }
.chart-wrap { position: relative; width: 100%; height: 420px; }
.chart-wrap canvas { position: absolute; top: 0; left: 0; width: 100% !important; height: 100% !important; }

/* ── Table Section ───────────────────────────────────────────────────────── */
.table-section { padding: 16px 24px; }
.table-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; flex-wrap: wrap; gap: 8px; }
.table-title { font-size: 0.9rem; font-weight: 600; color: var(--text-sub); border-left: 3px solid var(--blue); padding-left: 10px; }
.table-controls { display: flex; align-items: center; gap: 8px; }
.table-controls select, .table-controls input {
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: 5px;
  color: var(--text-main);
  padding: 5px 10px;
  font-size: 0.8rem;
}
.search-input { width: 180px; }
.search-input::placeholder { color: var(--text-muted); }

.table-wrap { overflow-x: auto; }
.product-table { width: 100%; border-collapse: collapse; font-size: 0.82rem; }
.product-table th {
  background: var(--bg-deep);
  color: var(--text-muted);
  padding: 10px 12px;
  text-align: left;
  white-space: nowrap;
  border-bottom: 1px solid var(--border);
}
.product-table th.sortable { cursor: pointer; }
.product-table th.sortable:hover { color: var(--text-main); }
.product-table th.active-sort { color: var(--blue); }
.product-table td { padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.product-table tr:hover td { background: rgba(255,255,255,.02); }

.loading-cell { text-align: center; color: var(--text-muted); padding: 32px !important; }

.asin-link { color: var(--blue); text-decoration: none; font-family: monospace; font-size: 0.8rem; }
.asin-link:hover { text-decoration: underline; }
.product-img { width: 40px; height: 40px; object-fit: contain; border-radius: 4px; background: var(--bg-deep); }
.product-img-placeholder { width: 40px; height: 40px; background: var(--bg-deep); border-radius: 4px; display: flex; align-items: center; justify-content: center; color: var(--text-muted); font-size: 1.2rem; }
.product-title { max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--text-sub); }

.grade-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.72rem;
  white-space: nowrap;
}
.trend-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.72rem;
  white-space: nowrap;
  margin-top: 3px;
}

.mini-spark { display: block; }

/* ── Pagination ──────────────────────────────────────────────────────────── */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  flex-wrap: wrap;
}
.page-info { color: var(--text-muted); font-size: 0.78rem; margin-right: 8px; }
.page-btn {
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--bg-deep);
  color: var(--text-sub);
  cursor: pointer;
  font-size: 0.8rem;
  min-width: 32px;
  text-align: center;
}
.page-btn:hover { border-color: var(--blue); color: var(--blue); }
.page-btn.active { background: var(--blue); color: #fff; border-color: var(--blue); }
.page-btn:disabled { opacity: .4; cursor: default; }

/* ── Tooltip ─────────────────────────────────────────────────────────────── */
.chart-tooltip {
  position: fixed;
  z-index: 9999;
  background: rgba(15, 23, 42, 0.97);
  border: 1px solid #334155;
  border-radius: 10px;
  padding: 14px 16px;
  width: 260px;
  pointer-events: none;
  box-shadow: 0 8px 32px rgba(0,0,0,.6);
  transition: opacity .1s;
}
.tt-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; margin-bottom: 6px; }
.tt-asin {
  font-family: monospace;
  font-size: 0.85rem;
  color: var(--blue);
  text-decoration: none;
  font-weight: 700;
  pointer-events: all;
}
.tt-asin:hover { text-decoration: underline; }
.tt-badges { display: flex; flex-direction: column; gap: 3px; align-items: flex-end; }
.tt-badge {
  font-size: 0.7rem;
  padding: 2px 7px;
  border-radius: 10px;
  white-space: nowrap;
  border: 1px solid currentColor;
}
.tt-title { font-size: 0.78rem; color: var(--text-sub); margin-bottom: 10px; line-height: 1.4; }
.tt-metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin-bottom: 8px; }
.tt-metric { display: flex; flex-direction: column; gap: 1px; }
.tt-metric-label { font-size: 0.68rem; color: var(--text-muted); }
.tt-metric-value { font-size: 0.82rem; font-weight: 600; color: var(--text-main); }
.tt-judge { font-size: 0.7rem; color: var(--text-muted); border-top: 1px solid var(--border); padding-top: 6px; margin-bottom: 8px; line-height: 1.4; }
.tt-spark-wrap { border-top: 1px solid var(--border); padding-top: 8px; }
.tt-spark-label { font-size: 0.68rem; color: var(--text-muted); margin-bottom: 4px; }

/* ── Modal ───────────────────────────────────────────────────────────────── */
.modal-bg {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.7);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 480px;
  max-width: 95vw;
  max-height: 90vh;
  overflow-y: auto;
}
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
  font-weight: 600;
}
.modal-close { background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: 1rem; }
.modal-close:hover { color: var(--text-main); }
.modal-body { padding: 20px; }

.drop-zone {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 32px;
  text-align: center;
  cursor: pointer;
  transition: all .2s;
}
.drop-zone:hover, .drop-zone.drag-over { border-color: var(--blue); background: rgba(59,130,246,.05); }
.drop-icon { font-size: 2rem; margin-bottom: 8px; }
.drop-text { color: var(--text-sub); font-size: 0.85rem; margin-bottom: 4px; }
.drop-hint { color: var(--text-muted); font-size: 0.75rem; }

.import-progress-wrap { margin: 16px 0; }
.import-progress-bar { background: var(--bg-deep); border-radius: 4px; height: 6px; overflow: hidden; margin-bottom: 8px; }
.import-progress-fill { height: 100%; background: var(--blue); border-radius: 4px; transition: width .3s; width: 0%; }
.import-progress-text { font-size: 0.78rem; color: var(--text-muted); text-align: center; }

.import-result { padding: 12px; border-radius: 6px; font-size: 0.82rem; margin-bottom: 12px; }
.import-result.success { background: rgba(16,185,129,.1); border: 1px solid rgba(16,185,129,.3); color: #10b981; }
.import-result.error   { background: rgba(239,68,68,.1);  border: 1px solid rgba(239,68,68,.3);  color: #ef4444; }

.import-db-status { margin-top: 12px; }
.db-status-title { font-size: 0.78rem; color: var(--text-muted); margin-bottom: 8px; }
#db-status-content { font-size: 0.82rem; color: var(--text-sub); }

/* ── Toast ───────────────────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 20px;
  font-size: 0.85rem;
  color: var(--text-main);
  z-index: 9999;
  box-shadow: 0 4px 20px rgba(0,0,0,.4);
  animation: slideUp .2s ease;
}
@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .kpi-grid { grid-template-columns: repeat(3, 1fr); }
  .custom-sliders { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .chart-wrap { height: 320px; }
  .header-actions .btn-outline { display: none; }
}