/* 03 decks study */
/* Home + decks */
#homeView {
  flex-direction: column;
}
#homeHeader {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}
#homeHeader span {
  font-size: 12px;
  color: var(--muted);
  margin-right: auto;
}
#homeView h2 {
  font-family: "Source Sans 3", sans-serif;
  font-size: 28px;
  font-weight: 500;
  color: var(--plum);
  padding: 16px 20px 2px;
}
#homeView .section-label {
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .08em;
  padding: 4px 20px 10px;
}
#deckGrid {
  flex: 1;
  overflow-y: auto;
  padding: 8px 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.deck-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.subdeck-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-left: 16px;
}
.deck-card {
  border: none;
  border-radius: 0;
  padding: 16px 20px 14px;
  width: 100%;
  max-width: 420px;
  min-height: 100px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 5px;
  position: relative;
  background: var(--card-bg);
  transition: all .2s;
  box-shadow: var(--card-shadow);
  border-left: 4px solid var(--acc1-d);
  background-image: repeating-linear-gradient(transparent, transparent calc(var(--line-spacing) - 1px), var(--line-color) calc(var(--line-spacing) - 1px), var(--line-color) var(--line-spacing));
}
.deck-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--card-shadow-hover);
  background: var(--acc-petal);
  border-left-color: var(--acc1-d);
  background-image: none;
}
.deck-card.subdeck-card {
  max-width: 220px;
  min-height: 80px;
  border-left: 4px solid var(--acc2-d);
}
.deck-card .dc-icon {
  font-size: 18px;
  margin-bottom: 2px;
}
.deck-card .dc-name {
  font-family: Aptos, "Segoe UI", Arial, sans-serif;
  font-weight: 700;
  font-size: 18px;
  color: var(--plum);
  word-break: break-word;
}
.deck-card.subdeck-card .dc-name {
  font-size: 15px;
}
.deck-card .dc-count {
  font-size: 11px;
  color: var(--muted);
}
.deck-card .dc-actions {
  display: none;
  gap: 4px;
  position: absolute;
  top: 8px;
  right: 8px;
}
.deck-card:hover .dc-actions {
  display: flex;
}
.deck-card .dc-actions button {
  padding: 2px 8px;
  font-size: 10px;
  border-radius: 0;
}
.deck-card.new-deck {
  border-left: 4px dashed var(--acc1-d);
  color: var(--muted);
  align-items: center;
  justify-content: center;
  font-size: 13px;
  flex-direction: row;
  gap: 6px;
  background-image: none;
}
.deck-card.new-deck:hover {
  color: var(--acc1-d);
  background: var(--acc-petal);
}
.dc-conf {
  display: flex;
  gap: 4px;
  margin-top: 4px;
}
.dc-conf .dot,
.ci-dot {
  width: 8px;
  height: 8px;
  border-radius: 0;
  flex-shrink: 0;
}
.dot-g {
  background: var(--good);
}
.dot-o {
  background: var(--unsure);
}
.dot-r {
  background: var(--bad);
}
.dot-n {
  background: #ddd;
}
/* Study view */
#studyView {
  flex-direction: column;
  align-items: center;
  overflow-y: auto;
  padding: 24px 16px;
  gap: 16px;
}
#emptyStudy {
  text-align: center;
  color: var(--muted);
  font-size: 14px;
  line-height: 2.4;
  margin: auto;
}
#studyContent {
  width: 100%;
  max-width: 800px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  flex: 1;
  justify-content: center;
  min-height: min-content;
}
#progressRow {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--muted);
}
#cardTag {
  background: var(--acc-petal);
  color: var(--acc1-d);
  border-radius: 0;
  padding: 3px 10px;
  font-size: 11px;
  font-weight: 500;
}
#progressBar {
  width: 100%;
  height: 3px;
  background: var(--acc-border);
  border-radius: 0;
  overflow: hidden;
}
#progressFill {
  height: 100%;
  background: var(--acc1);
  border-radius: 0;
  transition: width .3s;
}
#studyTools {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
  max-width: 900px;
  flex-wrap: wrap;
}
.tool-btn {
  font-size: 11px;
  padding: 4px 10px;
  display: flex;
  align-items: center;
  gap: 4px;
}
.tool-btn.active {
  background: var(--acc-petal) !important;
  border-color: var(--acc1) !important;
  color: var(--acc1-d) !important;
}
.tool-btn.active.hl-yellow-tool {
  background: #fff3b0 !important;
  border-color: #e6c800 !important;
  color: #7a6500 !important;
}
.tool-btn.active.hl-rose-tool {
  background: var(--acc-petal) !important;
  border-color: var(--acc1) !important;
  color: var(--acc1-d) !important;
}
.tool-btn.active.underline-tool,
#readEditToggle.active {
  background: var(--acc-petal) !important;
  border-color: var(--acc1) !important;
  color: var(--acc1-d) !important;
}
.tool-btn.active.eraser-tool {
  background: #f0f0f0 !important;
  border-color: #999 !important;
  color: #555 !important;
}
.tool-dot {
  width: 24px;
  height: 24px;
  border-radius: 0;
  padding: 0;
  border: 2px solid transparent;
  cursor: pointer;
  flex-shrink: 0;
}
.tool-dot.active {
  transform: scale(1.12);
  box-shadow: 0 0 0 2px var(--white), 0 0 0 4px var(--acc-border);
}
.yellow-dot {
  background: rgba(246, 217, 76, .82);
}
.pink-dot {
  background: rgba(244, 178, 214, .82);
}
.orange-dot {
  background: rgba(244, 163, 64, .82);
}
.blue-dot {
  background: rgba(166, 210, 255, .88);
}
#cardWrap {
  width: 100%;
  position: relative;
}
#card {
  width: 100%;
  cursor: pointer;
}
.face {
  display: none;
  border-radius: 0;
  padding: 28px 28px 24px;
  height: 520px;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  background: var(--card-bg);
  box-shadow: var(--card-shadow);
  transition: box-shadow .2s;
}
.face:hover {
  box-shadow: var(--card-shadow-hover);
}
.face.visible {
  display: flex;
}
.face-label {
  font-family: Aptos, "Segoe UI", Arial, sans-serif;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 12px;
  font-weight: 700;
  padding-left: 50px;
}
.face-body {
  position: relative;
  flex: 1;
  overflow-y: auto;
  font-size: 18px;
  padding-left: 50px;
  line-height: var(--line-spacing);
  background-image: linear-gradient(90deg, transparent 40px, color-mix(in srgb, var(--acc1) 35%, transparent) 40px, color-mix(in srgb, var(--acc1) 35%, transparent) 42px, transparent 42px), repeating-linear-gradient(to bottom, transparent 0, transparent calc(var(--line-spacing) - 1px), var(--line-color) calc(var(--line-spacing) - 1px), var(--line-color) var(--line-spacing));
  background-size: 100% 100%, 100% var(--line-spacing);
  background-attachment: local, local;
  text-align: left;
}
.face-body::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 40px;
  width: 2px;
  background: color-mix(in srgb, var(--acc1) 35%, transparent);
  pointer-events: none;
}
.face-body .card-line {
  display: block;
  line-height: var(--line-spacing);
  margin: 0;
  padding: 0;
  position: relative;
  top: 8px;
  min-height: var(--line-spacing);
  white-space: pre-wrap;
  text-align: left;
}
.face-body .card-line.math-block {
  line-height: 1.4;
  padding-top: 4px;
  padding-bottom: 4px;
  min-height: auto;
}
.face-hint {
  font-size: 11px;
  color: var(--acc-border);
  text-align: center;
  margin-top: 12px;
  font-style: italic;
  font-family: Aptos, "Segoe UI", Arial, sans-serif;
}
.face::before {
  content: '';
  position: absolute;
  top: 20px;
  left: 16px;
  width: 18px;
  height: 18px;
  border-radius: 0;
  background: var(--bg-color);
  border: 2px solid var(--acc-border);
  box-shadow: inset 0 1px 3px rgba(0,0,0,.1);
}
#faceFront .face-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-left: 50px;
  padding-right: 10px;
}
#faceFront .face-body::before {
  content: none;
}
#faceFront .card-line {
  display: inline-block;
  font-size: 30px;
  line-height: 1.6;
  margin: 0;
  padding: 2px 12px;
  background: var(--acc-petal);
  border-radius: 0;
  color: var(--acc1-d);
  top: 0;
  max-width: 90%;
  min-height: auto;
  text-align: center;
}
.read-editable {
  cursor: default;
}
.read-editable.read-edit-enabled {
  cursor: text;
}
.read-editable:focus {
  outline: none;
}
#cardButtons {
  position: absolute;
  top: 10px;
  right: 10px;
  display: flex;
  gap: 8px;
  z-index: 10;
  opacity: 0;
  transition: opacity .2s;
}
#cardWrap:hover #cardButtons {
  opacity: 1;
}
.card-top-btn {
  background: var(--acc-petal);
  border: 1.5px solid var(--acc1);
  padding: 3px 10px;
  font-size: 11px;
  color: var(--acc1-d);
}
#confRow {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 2px;
  flex-wrap: wrap;
  justify-content: center;
}
#confRow span {
  font-size: 12px;
  color: var(--muted);
}
.conf-g {
  border-color: var(--good) !important;
  color: var(--good) !important;
  background: transparent !important;
}
.conf-g:hover,
.conf-g.active {
  background: var(--good-bg) !important;
  border-color: var(--good) !important;
  color: var(--good) !important;
}
.conf-o {
  border-color: var(--unsure) !important;
  color: var(--unsure) !important;
  background: transparent !important;
}
.conf-o:hover,
.conf-o.active {
  background: var(--unsure-bg) !important;
  border-color: var(--unsure) !important;
  color: var(--unsure) !important;
}
.conf-r {
  border-color: var(--bad) !important;
  color: var(--bad) !important;
  background: transparent !important;
}
.conf-r:hover,
.conf-r.active {
  background: var(--bad-bg) !important;
  border-color: var(--bad) !important;
  color: var(--bad) !important;
}
#navRow {
  display: flex;
  align-items: center;
  gap: 12px;
}
#navCount {
  font-size: 12px;
  color: var(--muted);
  min-width: 52px;
  text-align: center;
}
/* Highlights */
.study-hl-yellow,
.rich-editor mark,
.face-body mark {
  background: linear-gradient(180deg, transparent 8%, var(--hl-yellow-bg) 8%, var(--hl-yellow-bg) 88%, transparent 88%);
  color: var(--hl-yellow-fg);
  border-radius: 0;
  padding: 0 .05em;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}
.study-hl-pink,
.rich-editor .hl-rose,
.face-body .hl-rose {
  background: linear-gradient(180deg, transparent 8%, var(--hl-pink-bg) 8%, var(--hl-pink-bg) 88%, transparent 88%);
  color: var(--hl-pink-fg);
  border-radius: 0;
  padding: 0 .05em;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}
.study-hl-orange {
  background: linear-gradient(180deg, transparent 8%, var(--hl-orange-bg) 8%, var(--hl-orange-bg) 88%, transparent 88%);
  color: var(--hl-orange-fg);
  border-radius: 0;
  padding: 0 .05em;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}
.study-hl-blue {
  background: linear-gradient(180deg, transparent 8%, var(--hl-blue-bg) 8%, var(--hl-blue-bg) 88%, transparent 88%);
  color: var(--hl-blue-fg);
  border-radius: 0;
  padding: 0 .05em;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}
.study-bold {
  font-weight: 700;
}
.study-underline,
.rich-editor u,
.rich-editor .underline,
.face-body u,
.face-body .underline {
  text-decoration: underline;
  text-decoration-color: var(--acc1-d);
  text-decoration-thickness: 2px;
  text-underline-offset: 2px;
}
.math-atom {
  display: inline;
}
.highlight-mode * {
  cursor: text !important;
}
.underline-mode * {
  cursor: text !important;
}
.eraser-mode * {
  cursor: default !important;
}