/* Final Books interaction polish — July 26, 2026 */

/* Interactive donut charts */
.books-donut {
  position: relative;
  background: transparent;
  box-shadow: none;
}

.books-donut-svg {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
  transform: rotate(-90deg);
}

.books-donut-track,
.books-donut-segment {
  fill: none;
}

.books-donut-track {
  stroke: #e8ebf2;
  stroke-width: 8;
}

.books-donut-segment {
  stroke-width: 8;
  cursor: default;
  transition: opacity 150ms ease, stroke-width 150ms ease, filter 150ms ease;
}

.books-donut-segment[data-donut-filter] {
  cursor: pointer;
}

.books-donut-segment.books-insight-series-0 { stroke: var(--insight-1); }
.books-donut-segment.books-insight-series-1 { stroke: var(--insight-2); }
.books-donut-segment.books-insight-series-2 { stroke: var(--insight-3); }
.books-donut-segment.books-insight-series-3 { stroke: var(--insight-4); }
.books-donut-segment.books-insight-series-4 { stroke: var(--insight-5); }
.books-donut-segment.books-insight-series-5 { stroke: var(--insight-6); }

.books-donut-segment[data-donut-filter]:hover,
.books-donut-segment[data-donut-filter]:focus {
  stroke-width: 9.5;
  filter: drop-shadow(0 2px 2px rgba(30, 42, 96, 0.2));
  outline: none;
}

.books-donut-card[data-has-active="true"] .books-donut-segment[data-active="false"] {
  opacity: 0.22;
}

.books-donut-segment[data-active="true"] {
  stroke-width: 9.5;
}

.books-donut-center {
  position: absolute;
  inset: 21%;
  width: auto;
  aspect-ratio: auto;
  pointer-events: none;
}

.books-donut-legend li {
  display: block;
}

.books-donut-legend button,
.books-donut-legend-static {
  display: grid;
  width: 100%;
  grid-template-columns: 9px minmax(0, 1fr) auto auto;
  gap: 5px;
  align-items: center;
  min-width: 0;
  padding: 3px 4px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--atlas-muted);
  font: inherit;
  font-size: 0.67rem;
  text-align: left;
}

.books-donut-legend button {
  cursor: pointer;
  transition: background 140ms ease, opacity 140ms ease, transform 140ms ease;
}

.books-donut-legend button:hover,
.books-donut-legend button:focus-visible {
  background: rgba(64, 92, 245, 0.08);
  outline: none;
  transform: translateX(2px);
}

.books-donut-legend button[aria-pressed="true"] {
  background: rgba(64, 92, 245, 0.12);
  box-shadow: inset 0 0 0 1px rgba(64, 92, 245, 0.2);
}

.books-donut-card[data-has-active="true"] .books-donut-legend button[aria-pressed="false"] {
  opacity: 0.38;
}

/* Future calendar months are neither empty nor completed. */
.books-reading-calendar-cell[data-future="true"] {
  border-color: rgba(132, 140, 158, 0.18);
  background:
    repeating-linear-gradient(
      -45deg,
      rgba(132, 140, 158, 0.04) 0,
      rgba(132, 140, 158, 0.04) 5px,
      rgba(132, 140, 158, 0.13) 5px,
      rgba(132, 140, 158, 0.13) 7px
    ),
    #f4f5f8;
  color: transparent;
}

/* Filter-aware surprise menu */
.books-surprise {
  position: relative;
  flex: 0 0 auto;
}

.books-surprise-trigger {
  min-height: 40px;
  padding: 9px 12px;
  border: 1px solid rgba(64, 92, 245, 0.28);
  border-radius: 12px;
  background: linear-gradient(180deg, #ffffff, #f4f6ff);
  color: #263ebd;
  font: inherit;
  font-size: 0.84rem;
  font-weight: 800;
  line-height: 1;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  white-space: nowrap;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
  transition: transform 120ms ease, box-shadow 150ms ease, border-color 150ms ease;
}

.books-surprise-trigger:hover,
.books-surprise-trigger:focus-visible,
.books-surprise-trigger[aria-expanded="true"] {
  border-color: rgba(64, 92, 245, 0.62);
  box-shadow: 0 7px 16px rgba(39, 57, 151, 0.12);
  outline: none;
  transform: translateY(-1px);
}

.books-surprise-chevron {
  font-size: 0.66rem;
  transition: transform 150ms ease;
}

.books-surprise-trigger[aria-expanded="true"] .books-surprise-chevron {
  transform: rotate(180deg);
}

.books-surprise-menu {
  position: absolute;
  z-index: 80;
  top: calc(100% + 8px);
  left: 50%;
  width: min(286px, calc(100vw - 28px));
  padding: 7px;
  border: 1px solid rgba(218, 223, 236, 0.98);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 18px 42px rgba(15, 23, 42, 0.16);
  transform: translateX(-50%);
  backdrop-filter: blur(14px);
}

.books-surprise-menu[hidden] {
  display: none;
}

.books-surprise-menu button {
  display: grid;
  width: 100%;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 9px;
  align-items: center;
  padding: 9px 10px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--ink);
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.books-surprise-menu button:hover,
.books-surprise-menu button:focus-visible {
  background: #f1f3ff;
  outline: none;
}

.books-surprise-menu button > span:first-child {
  font-size: 1rem;
  text-align: center;
}

.books-surprise-menu button > span:last-child {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 2px;
}

.books-surprise-menu strong {
  font-size: 0.8rem;
}

.books-surprise-menu small {
  overflow: hidden;
  color: var(--muted);
  font-size: 0.67rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.books-surprise-toast {
  position: fixed;
  z-index: 120;
  right: 18px;
  bottom: 18px;
  max-width: min(360px, calc(100vw - 36px));
  padding: 10px 13px;
  border: 1px solid rgba(64, 92, 245, 0.24);
  border-radius: 12px;
  background: rgba(22, 28, 44, 0.94);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
  box-shadow: 0 14px 32px rgba(15, 23, 42, 0.22);
}

.books-surprise-toast[hidden] {
  display: none;
}

@media (max-width: 900px) {
  .books-surprise {
    order: 4;
  }

  .books-surprise-trigger {
    min-height: 38px;
    font-size: 0.79rem;
  }
}

@media (max-width: 560px) {
  .books-surprise {
    width: auto;
  }

  .books-surprise-trigger > span:nth-child(2) {
    display: none;
  }

  .books-surprise-trigger {
    width: 40px;
    justify-content: center;
    padding-inline: 0;
    border-radius: 999px;
  }

  .books-surprise-chevron {
    display: none;
  }

  .books-surprise-menu {
    position: fixed;
    top: auto;
    right: 14px;
    bottom: 14px;
    left: 14px;
    width: auto;
    transform: none;
  }
}