/* Phân tích thống kê — chart grid + detail view */

body.analytics-page {
  height: 100dvh;
  overflow: hidden;
}
.analytics-page .app-shell {
  height: 100dvh;
  min-height: 0;
  overflow: hidden;
}
.analytics-page .main {
  min-height: 0;
  overflow: auto;
  padding: 12px 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.an-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  min-height: 40px;
}
.an-toolbar-start,
.an-toolbar-end {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  min-width: 0;
}
.an-toolbar.is-end { justify-content: flex-end; }
.an-toolbar .btn.primary {
  min-height: 36px;
  padding: 0 16px;
  font-weight: 600;
  letter-spacing: .02em;
}

.an-date-range {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--fg);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  letter-spacing: .01em;
}
.an-date-range svg { color: var(--muted); flex: 0 0 auto; }
.an-date-field { position: relative; }
button.an-date-range { cursor: pointer; text-align: left; }
button.an-date-range:hover { border-color: var(--accent); }
button.an-date-range[aria-expanded="true"] {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--info-soft);
}
.an-date-caret { transition: transform .16s ease; }
button.an-date-range[aria-expanded="true"] .an-date-caret { transform: rotate(180deg); }

.an-cal-pop {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 40;
  display: flex;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.an-cal-pop[hidden] { display: none; }
.an-cal-presets {
  display: flex;
  flex-direction: column;
  gap: 2px;
  width: 132px;
  padding: 8px;
  border-right: 1px solid var(--line);
  background: var(--bg);
}
.an-cal-presets button {
  min-height: 30px;
  padding: 0 10px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .02em;
  text-align: left;
  cursor: pointer;
}
.an-cal-presets button:hover { background: var(--info-soft); color: var(--accent); }
.an-cal-presets button.active { background: var(--accent); color: var(--surface); }
.an-cal-main { padding: 10px 12px 12px; }
.an-cal-head {
  display: flex;
  align-items: center;
  gap: 8px;
}
.an-cal-nav {
  width: 26px;
  height: 26px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
}
.an-cal-nav:hover { border-color: var(--accent); color: var(--accent); }
.an-cal-titles {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.an-cal-titles span {
  text-align: center;
  font-size: 13px;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: .01em;
}
.an-cal-months {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 8px;
}
.an-cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 30px);
  gap: 1px 0;
}
.an-cal-dow {
  height: 24px;
  display: grid;
  place-items: center;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--muted);
}
.an-cal-day {
  position: relative;
  height: 28px;
  border: 0;
  background: transparent;
  color: var(--fg);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  cursor: pointer;
}
.an-cal-day.is-out { color: var(--muted); opacity: .45; }
.an-cal-day span {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  margin: 0 auto;
  border-radius: 6px;
}
.an-cal-day:hover span { background: var(--info-soft); color: var(--accent); }
.an-cal-day.in-range::before {
  content: "";
  position: absolute;
  inset: 1px 0;
  background: var(--info-soft);
}
.an-cal-day.range-start::before { left: 50%; border-radius: 6px 0 0 6px; }
.an-cal-day.range-end::before { right: 50%; border-radius: 0 6px 6px 0; }
.an-cal-day.range-start.range-end::before { display: none; }
.an-cal-day.range-start span,
.an-cal-day.range-end span {
  background: var(--accent);
  color: var(--surface);
  font-weight: 700;
}
.an-cal-day.is-today:not(.range-start):not(.range-end) span {
  box-shadow: inset 0 0 0 1px var(--accent);
  color: var(--accent);
  font-weight: 700;
}
.an-cal-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}
.an-cal-readout {
  font-size: 12px;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
  letter-spacing: .01em;
}
.an-cal-actions { display: flex; gap: 8px; }
.an-cal-actions .btn { min-height: 30px; padding: 0 14px; font-size: 12px; }
.an-grain {
  display: inline-grid;
  grid-template-columns: repeat(2, minmax(64px, auto));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
}
.an-grain button {
  min-height: 36px;
  min-width: 64px;
  padding: 0 14px;
  border: 0;
  border-right: 1px solid var(--line);
  background: transparent;
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .02em;
}
.an-grain button:last-child { border-right: 0; }
.an-grain button:hover { background: var(--info-soft); color: var(--accent); }
.an-grain button.active {
  background: var(--accent);
  color: var(--surface);
}
.an-nav-btns {
  display: inline-flex;
  gap: 4px;
}
.an-nav-btns .btn {
  width: 36px;
  min-width: 36px;
  padding: 0;
  justify-content: center;
}

.an-grid-view[hidden],
.an-detail-view[hidden] { display: none !important; }

.an-chart-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(280px, 1fr));
  gap: 12px;
  align-content: start;
}
.an-chart-grid .an-card[hidden] { display: none !important; }

.an-card {
  min-height: 248px;
  display: grid;
  grid-template-rows: auto minmax(180px, 1fr);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 1px 2px rgba(0, 0, 0, .04);
  overflow: hidden;
}
.an-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
  padding: 12px 12px 0 14px;
}
.an-card-title {
  margin: 0;
  color: var(--fg);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: .01em;
}
.an-expand {
  width: 28px;
  height: 28px;
  flex: 0 0 auto;
  display: inline-grid;
  place-items: center;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: var(--muted);
}
.an-expand:hover,
.an-expand:focus-visible {
  background: var(--info-soft);
  color: var(--accent);
  outline: none;
}

.an-chart-body {
  position: relative;
  min-height: 0;
  padding: 4px 8px 10px 4px;
}
.an-chart-body svg {
  width: 100%;
  height: 100%;
  display: block;
  overflow: visible;
}
.an-chart-body .an-grid-line { stroke: var(--line); stroke-width: 1; opacity: .85; }
.an-chart-body .an-axis-label {
  fill: var(--muted);
  font-size: 10px;
  font-family: var(--font);
}
.an-chart-body .an-series-line {
  fill: none;
  stroke-width: 2;
  stroke-linejoin: round;
  stroke-linecap: round;
}
.an-chart-body .an-series-area { stroke: none; opacity: .18; }
.an-chart-body .an-hover-line {
  stroke: var(--line-strong);
  stroke-width: 1;
  stroke-dasharray: 3 3;
  pointer-events: none;
  opacity: 0;
}
.an-chart-body.is-hovering .an-hover-line { opacity: 1; }
.an-chart-body .an-hover-dot {
  stroke: var(--surface);
  stroke-width: 2;
  pointer-events: none;
  opacity: 0;
}
.an-chart-body.is-hovering .an-hover-dot { opacity: 1; }

.an-tip {
  position: absolute;
  z-index: 5;
  min-width: 160px;
  max-width: 240px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--surface);
  box-shadow: var(--shadow);
  color: var(--fg);
  font-size: 12px;
  line-height: 1.45;
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, calc(-100% - 10px));
  transition: opacity .12s ease;
}
.an-tip.is-on { opacity: 1; }
.an-tip-time {
  display: block;
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  letter-spacing: .01em;
}
.an-tip-row {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--fg);
}
.an-tip-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex: 0 0 auto;
}
.an-tip-name {
  flex: 1 1 auto;
  min-width: 0;
  color: var(--fg);
}
.an-tip-val {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--fg);
}

/* Dark: tip + chart chrome — tránh nền trắng / chữ sáng biến mất */
html[data-theme-style="dark"] .an-tip,
html[data-theme-style="dark-soft"] .an-tip {
  background: #2a2e36;
  border-color: #4a505a;
  color: #f5f5f5;
  box-shadow: 0 8px 20px rgba(0, 0, 0, .55);
}
html[data-theme-style="dark"] .an-tip-time,
html[data-theme-style="dark-soft"] .an-tip-time { color: #a0a0a0; }
html[data-theme-style="dark"] .an-tip-name,
html[data-theme-style="dark"] .an-tip-val,
html[data-theme-style="dark"] .an-tip-row,
html[data-theme-style="dark-soft"] .an-tip-name,
html[data-theme-style="dark-soft"] .an-tip-val,
html[data-theme-style="dark-soft"] .an-tip-row { color: #f5f5f5; }
html[data-theme-style="dark"] .an-card,
html[data-theme-style="dark-soft"] .an-card {
  background: #202226;
  border-color: #34383f;
}
html[data-theme-style="dark"] .an-card-title,
html[data-theme-style="dark-soft"] .an-card-title { color: #f5f5f5; }
html[data-theme-style="dark"] .an-chart-body .an-grid-line,
html[data-theme-style="dark-soft"] .an-chart-body .an-grid-line {
  stroke: #34383f;
  opacity: 1;
}

.an-detail-view {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.an-detail-card {
  flex: 1;
  min-height: 420px;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
}
.an-detail-card .an-card-head { padding: 14px 14px 0; }
.an-detail-card .an-card-title { font-size: 15px; }
.an-detail-plot {
  position: relative;
  min-height: 0;
  padding: 8px 16px 4px 8px;
}
.an-detail-plot svg { width: 100%; height: 100%; display: block; }

.an-zoom {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) 40px;
  align-items: center;
  gap: 8px;
  padding: 8px 16px 14px;
}
.an-zoom-track {
  position: relative;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--soft-2);
  overflow: hidden;
  touch-action: none;
  user-select: none;
}
.an-zoom-mini {
  position: absolute;
  inset: 6px 0;
  opacity: .35;
  pointer-events: none;
}
.an-zoom-mini svg { width: 100%; height: 100%; display: block; }
.an-zoom-window {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  border: 1px solid var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  cursor: grab;
}
.an-zoom-window:active { cursor: grabbing; }
.an-zoom-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 10px;
  background: color-mix(in srgb, var(--accent) 28%, var(--surface));
  cursor: ew-resize;
}
.an-zoom-handle.is-start { left: 0; }
.an-zoom-handle.is-end { right: 0; }
.an-zoom-label {
  color: var(--muted);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  text-align: center;
}

.an-empty-hint {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 12px;
  pointer-events: none;
}
.an-card[data-empty="true"] .an-empty-hint { display: grid; }
.an-card:not([data-empty="true"]) .an-empty-hint { display: none; }

.analytics-page .export-report-options label.is-checked,
.analytics-page .export-report-options label:has(input:checked) {
  background: var(--info-soft);
}

@media (max-width: 1200px) {
  .an-chart-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 1024px) {
  .an-toolbar { flex-wrap: wrap; gap: 8px; }
  .an-toolbar-start,
  .an-toolbar-end { flex-wrap: wrap; }
  .an-date-btn { min-width: 0; max-width: 100%; }
  .an-cal-pop { left: 0; max-width: min(560px, calc(100vw - 24px)); overflow: auto; }
  .an-detail-chart { min-height: 360px; }
}
@media (max-width: 760px) {
  .an-chart-grid { grid-template-columns: 1fr; }
  .an-toolbar { align-items: stretch; }
  .an-toolbar-start,
  .an-toolbar-end { width: 100%; }
  .an-toolbar-end { justify-content: flex-end; }
}