:root {
  --learning-paper: #faf8f2;
  --learning-ink: #253e37;
  --learning-green: #285e50;
  --learning-sage: #e8f0e6;
  --learning-gold: #7e5d21;
  --learning-active: #fff1cf;
  font-family: "DM Sans", system-ui, sans-serif;
  color: var(--learning-ink);
  background: var(--learning-paper);
  line-height: 1.6;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
}
header {
  max-width: 1120px;
  margin: auto;
  padding: 26px 30px;
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid #dce3da;
  font-size: 13px;
}
.brand {
  font-size: 19px;
  font-weight: 700;
  color: inherit;
  text-decoration: none;
}
main {
  max-width: 1060px;
  margin: auto;
  padding: 45px 30px;
}
.intro {
  margin-bottom: 35px;
}
.eyebrow {
  font-size: 11px;
  letter-spacing: 2px;
  font-weight: 700;
  color: #52695c;
}
h1 {
  font-size: 46px;
  line-height: 1.15;
  letter-spacing: -2px;
  margin: 14px 0;
}
p {
  color: #61726a;
}
.intro p {
  max-width: 600px;
}
.layout {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 24px;
}
aside {
  background: var(--learning-sage);
  border-radius: 20px;
  padding: 25px;
}
h2 {
  margin: 0 0 20px;
  font-size: 21px;
}
label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin: 16px 0 7px;
}
select,
input {
  width: 100%;
  border: 1px solid #ced8cc;
  border-radius: 10px;
  padding: 13px;
  background: #fff;
  color: var(--learning-ink);
  font: inherit;
}
button {
  border: 0;
  border-radius: 10px;
  padding: 13px 18px;
  background: var(--learning-green);
  color: white;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}
button:hover {
  filter: brightness(0.93);
}
button:disabled {
  opacity: 0.45;
  cursor: default;
}
.secondary {
  background: #eef2eb;
  color: var(--learning-green);
  border: 1px solid #d5dfd1;
}
.note {
  font-size: 13px;
  line-height: 1.8;
  margin: 28px 0;
  color: #667a68;
}
.card {
  border: 1px solid #dce3d7;
  background: white;
  border-radius: 20px;
  padding: 30px;
  box-shadow: 0 8px 30px #23402c05;
}
.cardtop {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: #698373;
  margin-bottom: 27px;
}
#tag {
  background: #eef2e7;
  border-radius: 20px;
  padding: 4px 12px;
}
#prompt {
  font-size: 32px;
  margin-bottom: 5px;
}
#instruction {
  margin-top: 0;
}
.actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 24px 0;
}
#answerform {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}
#answerform label {
  grid-column: 1/-1;
  margin: 0;
}
#feedback {
  color: var(--learning-green);
  font-weight: 600;
  white-space: pre-line;
}
.small {
  font-size: 12px;
}
#hint {
  letter-spacing: 5px;
  color: #698373;
}
.collection {
  margin-top: 48px;
}
.sectionhead {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.sectionhead h2 {
  margin-top: 8px;
}
details.word {
  border-top: 1px solid #dce3d7;
  padding: 16px 0;
}
summary {
  cursor: pointer;
}
summary strong {
  display: inline-block;
  min-width: 150px;
}
summary span {
  color: #758779;
  font-size: 14px;
}
.progress {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 18px 0;
}
.progress div {
  background: var(--learning-sage);
  padding: 12px;
  border-radius: 10px;
  font-size: 13px;
}
.progress b {
  display: block;
  font-weight: 500;
  color: #687f68;
}
.add {
  margin-top: 20px;
  border: 1px dashed #b9cbb7;
  border-radius: 12px;
  padding: 18px;
}
#addform {
  display: flex;
  align-items: end;
  gap: 15px;
}
#addform label {
  flex: 1;
}
footer {
  text-align: center;
  font-size: 12px;
  color: #758779;
  padding: 30px;
}
button:focus-visible,
summary:focus-visible {
  outline: 3px solid #dbab53;
  outline-offset: 3px;
}
[hidden] {
  display: none !important;
}
@media (max-width: 700px) {
  header span {
    display: none;
  }
  main {
    padding: 30px 18px;
  }
  h1 {
    font-size: 36px;
  }
  .layout {
    grid-template-columns: 1fr;
  }
  aside {
    padding: 18px;
  }
  .note {
    display: none;
  }
  .card {
    padding: 22px;
  }
  #answerform {
    grid-template-columns: 1fr;
  }
  .progress {
    grid-template-columns: repeat(2, 1fr);
  }
  #addform {
    flex-direction: column;
    align-items: stretch;
  }
  .sectionhead {
    display: block;
  }
}
.auth-panel {
  max-width: 550px;
  margin: 60px auto;
  padding: 32px;
}
.auth-panel h1 {
  font-size: 32px;
  letter-spacing: -1px;
}
.auth-panel button {
  margin-top: 18px;
}
.auth-panel #auth-submit {
  width: 100%;
}
.sync-bar {
  display: flex;
  gap: 15px;
  align-items: center;
  margin-bottom: 25px;
  font-size: 13px;
  color: #61726a;
}
#account-controls {
  display: flex;
  gap: 14px;
  align-items: center;
}
#account-email {
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
}
.auth-panel input {
  min-width: 0;
}
@media (max-width: 700px) {
  .auth-panel {
    margin: 25px 18px;
  }
  #account-controls span {
    display: none;
  }
  .sync-bar {
    flex-wrap: wrap;
  }
}
.layout {
  grid-template-columns: 250px minmax(0, 1fr);
}
.paper-trainer {
  min-width: 0;
  padding: 24px 0;
}
.paper-trainer h2 {
  font-size: 29px;
  margin: 8px 0;
}
.paper-trainer > p {
  margin: 8px 0 20px;
}
.paper-tools {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.paper-tools label {
  margin: 0;
}
.paper-tools select {
  width: auto;
  max-width: 100%;
  font-size: 13px;
}
.paper-tools button {
  font-size: 12px;
  padding: 11px;
}
.paper-window {
  overflow-x: auto;
  padding: 20px 8px 35px;
  scrollbar-color: #b5beaa #eff1e9;
}
.accordion-strip {
  display: grid;
  grid-template-columns: repeat(6, minmax(105px, 1fr));
  min-width: 660px;
  margin: 25px 0 50px;
  filter: drop-shadow(0 16px 9px #463c1d18);
}
.fold-panel {
  min-height: 225px;
  padding: 18px 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 15px;
  position: relative;
  border-top: 1px solid #c7c6ac;
  border-bottom: 1px solid #c7c6ac;
  overflow-wrap: anywhere;
}
.source-panel {
  background: linear-gradient(90deg, #f5efd8, #fffbea 80%, #e8e1c8);
  transform: skewY(-5deg);
  border-left: 1px solid #d5cdb3;
}
.target-panel {
  background: linear-gradient(90deg, #ded8bc, #f1ecd5 30%, #e4ddc1);
  transform: skewY(5deg);
  border-right: 1px dashed #b4a98c;
}
.source-panel > * {
  transform: skewY(5deg);
}
.target-panel > * {
  transform: skewY(-5deg);
}
.fold-label {
  font-size: 9px;
  letter-spacing: 1.5px;
  color: #7a795f;
}
.fold-panel strong {
  font-size: 16px;
  font-weight: 600;
  text-align: center;
  color: #4a4933;
}
.fold-number {
  position: absolute;
  top: 12px;
  left: 12px;
  color: #a09a79;
  font-size: 10px;
}
.fold-reveal {
  background: transparent;
  color: #7a7252;
  border: 1px dashed #aaa080;
  font-size: 11px;
  padding: 9px;
}
.fold-rating {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 10px;
  text-align: center;
  color: #657758;
}
.fold-rating button {
  font-size: 10px;
  padding: 5px 8px;
  background: #fbf8e9;
}
.unfolded {
  background: linear-gradient(90deg, #ece5cc, #fffbea);
}
.print-answer,
.print-note {
  display: none;
}
@media (max-width: 700px) {
  .layout {
    grid-template-columns: 1fr;
  }
  .paper-trainer {
    padding-top: 0;
  }
  .fold-panel {
    min-height: 200px;
  }
  .accordion-strip {
    margin-bottom: 30px;
  }
}
@media print {
  @page {
    size: A4 landscape;
    margin: 12mm;
  }
  body {
    background: white;
  }
  header,
  footer,
  aside,
  .intro,
  .sync-bar,
  .collection,
  .paper-tools,
  .paper-trainer > .eyebrow,
  .paper-trainer > p:not(.print-note),
  #import-legacy,
  #exercise-card,
  #auth {
    display: none !important;
  }
  main {
    max-width: none;
    padding: 0;
  }
  .layout {
    display: block;
  }
  .paper-trainer {
    padding: 0;
  }
  .paper-trainer h2 {
    font-size: 16pt;
  }
  .paper-window {
    overflow: visible;
    padding: 0;
  }
  .accordion-strip {
    min-width: 0;
    grid-template-columns: repeat(6, 1fr);
    margin: 10mm 0;
    filter: none;
    break-inside: avoid;
  }
  .fold-panel {
    min-height: 55mm;
    transform: none;
    background: #fff;
    border: 1px dashed #999;
  }
  .fold-panel > * {
    transform: none;
  }
  .fold-panel strong {
    font-size: 14pt;
  }
  .fold-answer,
  .fold-reveal,
  .fold-rating {
    display: none !important;
  }
  .print-answer {
    display: block;
  }
  .print-note {
    display: block;
    font-size: 10pt;
  }
}
#profile-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}
#profile-controls label {
  margin: 0;
  white-space: nowrap;
}
#profile-select {
  padding: 8px 12px;
  width: auto;
}
.profile-note {
  font-size: 12px;
  background: var(--learning-sage);
  border-radius: 10px;
  padding: 12px 16px;
  margin: 0 0 14px;
}
@media (max-width: 700px) {
  #profile-controls label {
    display: none;
  }
  header {
    padding: 20px 18px;
  }
  .brand {
    font-size: 16px;
  }
}
.view-tabs {
  display: flex;
  gap: 8px;
  position: sticky;
  top: 0;
  z-index: 5;
  background: var(--learning-paper);
  padding: 10px 0;
  margin: -10px 0 18px;
  border-bottom: 1px solid #dce3da;
}
.view-tabs button {
  background: transparent;
  color: #61726a;
}
.view-tabs button[aria-pressed="true"] {
  background: var(--learning-green);
  color: white;
}
#vocabulary-view {
  margin-top: 20px;
}
@media print {
  .view-tabs {
    display: none !important;
  }
}
.fold-form {
  display: flex;
  flex-direction: column;
  gap: 7px;
  width: 100%;
}
.fold-form input {
  font-size: 12px;
  padding: 8px 5px;
}
.fold-form button,
.fold-mic {
  font-size: 11px;
  padding: 7px;
}
.fold-feedback {
  font-size: 10px;
  text-align: center;
}
.fold-confirm {
  display: flex;
  flex-direction: column;
  gap: 5px;
  font-size: 11px;
  text-align: center;
}
.fold-confirm button {
  font-size: 10px;
  padding: 6px 4px;
}
.view-tabs {
  align-items: center;
}
@media print {
  .fold-form,
  .fold-mic,
  .fold-confirm,
  .fold-feedback {
    display: none !important;
  }
}
.single-strip {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  min-width: 0;
  max-width: 540px;
  margin: 15px auto 20px;
}
.single-strip .fold-panel {
  min-height: 270px;
  padding: 24px;
}
.single-strip .fold-panel strong {
  font-size: 25px;
}
.single-strip .fold-form input {
  font-size: 16px;
  padding: 12px;
}
.single-strip .fold-form button,
.single-strip .fold-mic {
  font-size: 14px;
  padding: 10px;
}
.single-strip .fold-feedback {
  font-size: 13px;
}
.print-worksheet {
  display: none;
}
#paper-round {
  margin-top: 20px;
  margin-bottom: 0;
}
.paper-window {
  padding-bottom: 20px;
}
@media (max-width: 700px) {
  .single-strip .fold-panel {
    padding: 14px;
    min-height: 240px;
  }
  .single-strip .fold-panel strong {
    font-size: 20px;
  }
}
@media print {
  .single-strip,
  #next-paper,
  #paper-round {
    display: none !important;
  }
  .print-worksheet {
    display: block;
  }
}
/* Two leaves meet at a vertical fold: prompt left, answer right. */
.single-strip {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-width: 640px;
  perspective: 1000px;
}
.single-strip .source-panel {
  border-right: 1px dashed #b4a98c;
}
.single-strip .target-panel {
  transform-origin: left center;
  transform: rotateY(-14deg) skewY(5deg);
  transition: transform 350ms ease, background 350ms ease;
}
.single-strip .target-panel.unfolded {
  transform: rotateY(0) skewY(0);
  background: linear-gradient(90deg, #ece5cc, #fffbea);
}
.single-strip .target-panel.unfolded > * {
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .single-strip .target-panel {
    transition: none;
  }
}
@media print {
  .print-worksheet .accordion-strip {
    grid-template-columns: repeat(2, 1fr);
  }
  .print-worksheet .fold-panel {
    min-height: 35mm;
  }
}
.memory-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}
.memory-bar label {
  margin: 0;
}
.memory-bar select {
  width: auto;
  max-width: 100%;
}
dialog {
  border: 1px solid #dce3d7;
  border-radius: 18px;
  padding: 25px;
  width: min(740px, calc(100% - 24px));
  max-height: 90vh;
  color: var(--learning-ink);
}
dialog::backdrop {
  background: #203c3480;
}
dialog .sectionhead h2 {
  margin: 0;
}
dialog p {
  font-size: 13px;
}
.photo-pickers {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.photo-pickers label {
  padding: 10px;
  border-radius: 10px;
  cursor: pointer;
  margin: 0;
}
.photo-pickers input {
  display: block;
  font-size: 12px;
  margin-top: 5px;
  max-width: 260px;
}
#photo-preview {
  width: 100%;
  max-height: 260px;
  object-fit: contain;
  margin-top: 20px;
}
textarea {
  width: 100%;
  border: 1px solid #ced8cc;
  border-radius: 10px;
  padding: 12px;
  font: inherit;
}
.photo-table {
  overflow-x: auto;
  margin: 15px 0;
}
.photo-table table {
  width: 100%;
  border-collapse: collapse;
}
.photo-table th {
  text-align: left;
  font-size: 12px;
}
.photo-table td {
  padding: 4px;
}
.photo-table input {
  min-width: 100px;
  padding: 9px;
}
.photo-check {
  display: flex;
  align-items: center;
  gap: 10px;
}
.photo-check input {
  width: auto;
}
#photo-count {
  margin-left: 12px;
}
@media print {
  .memory-bar,
  dialog {
    display: none !important;
  }
}
.photo-preview-wrap {
  position: relative;
  width: fit-content;
  max-width: 100%;
  margin: 15px auto;
}
#photo-preview {
  display: block;
  width: auto;
  max-width: 100%;
  max-height: 260px;
  margin: 0;
}
#photo-split-line {
  position: absolute;
  top: 0;
  bottom: 0;
  border-left: 2px dashed #bc592e;
  z-index: 1;
  pointer-events: none;
}
#photo-divider {
  padding: 0;
}
.photo-table td:last-child {
  white-space: nowrap;
}
.photo-table td:last-child button {
  padding: 7px;
}
#folder-form button {
  margin-top: 15px;
}
#addform {
  flex-wrap: wrap;
}
#addform label {
  min-width: 140px;
}
.fixture-warning {
  background: #fff2d8;
}
.fixture-info {
  font-size: 11px;
  margin-top: 8px;
  white-space: normal;
  max-width: 300px;
}
.fixture-notice {
  background: #fff2d8;
  border-radius: 10px;
  padding: 12px;
}
.photo-table .photo-check {
  font-size: 11px;
  margin: 8px 0;
}
.photo-table .photo-check input {
  min-width: 0;
}
.photo-table input[type="checkbox"] {
  width: auto;
}


/* Two-page learning sheet; the writing side stays reachable on small screens. */
.paper-tools {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 20px 0 12px;
}
.paper-setting label { margin: 0 0 6px; }
.paper-setting select { width: 100%; font-size: 13px; padding: 11px; }
.paper-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.paper-actions button { font-size: 12px; padding: 8px 10px; min-height: 44px; }
.writing-help { font-size: 12px; color: #52695c; }
.writing-help summary { cursor: pointer; padding: 10px; }
.writing-help p { max-width: 420px; margin: 6px 0; }
#paper-round { font-size: 12px; color: #52695c; }
.sheet-progress { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 14px; }
.progress-badge { background: #edf3ee; color: #365b48; border-radius: 20px; padding: 4px 9px; font-size: 11px; }
.progress-review { color: #86501f; background: #fcf0df; }
.progress-new { color: #59636c; background: #edf0f2; }
.paper-window { padding: 16px 0; overflow: visible; }
.leporello-sheet {
  width: 100%;
  min-width: 0;
  table-layout: fixed;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid #dce5dd;
  border-radius: 16px;
  overflow: hidden;
  color: var(--learning-ink);
  background: #fff;
}
.leporello-sheet caption { text-align: left; font-size: 13px; font-weight: 600; padding-bottom: 10px; color: #52695c; }
.leporello-sheet th, .leporello-sheet td { width: 50%; padding: 14px 16px; text-align: left; vertical-align: middle; overflow-wrap: anywhere; }
.leporello-sheet th { background: #f1f6f1; color: #365b48; font-size: 13px; border-bottom: 1px solid #dce5dd; }
.leporello-sheet th:first-child, .leporello-sheet td:first-child { border-right: 1px dashed #ccd8ce; }
.leporello-sheet td { border-bottom: 1px solid #e6ece6; font-size: 14px; }
.leporello-sheet tr:last-child td { border-bottom: 0; }
.leporello-sheet .column-fold { margin-left: 8px; padding: 6px 9px; font-size: 11px; min-height: 36px; background: #fff; border: 1px solid #d3dfd4; }
.leporello-sheet .column-covered { background: #f4f6f2; }
.leporello-sheet .column-covered::after { content: "Übersetzung verdeckt"; color: #637168; font-size: 12px; }
.leporello-sheet .single-strip { display: table-row; }
.leporello-sheet .single-strip td { border-bottom: 1px solid #dce5dd; background: #fff; }
.leporello-sheet .single-strip .active-practice { background: #f5f9f3; box-shadow: inset 3px 0 #84a88b; }
.leporello-sheet .single-strip .fold-panel { min-height: 0; padding: 0; border: 0; background: transparent; transform: none; align-items: stretch; gap: 8px; }
.leporello-sheet .single-strip .fold-panel > * { transform: none; }
.leporello-sheet .single-strip .source-panel { gap: 5px; }
.leporello-sheet .single-strip .fold-panel strong { font-size: 23px; line-height: 1.4; text-align: left; }
.leporello-sheet .fold-number { position: static; color: #607467; font-size: 11px; }
.leporello-sheet .source-panel .fold-label { display: none; }
.leporello-sheet .target-panel .fold-label { font-size: 12px; letter-spacing: 0; color: #52695c; }
.leporello-sheet .fold-form { display: flex; flex-direction: row; flex-wrap: wrap; gap: 8px; align-items: center; }
.leporello-sheet .single-strip .fold-input { flex: 1 1 120px; width: 0; min-width: 0; min-height: 48px; border-color: #b3c9b5; font-size: 16px; padding: 10px; touch-action: manipulation; }
.leporello-sheet .single-strip .check-answer { min-height: 48px; padding: 10px 13px; font-size: 13px; background: var(--learning-green); color: white; }
.leporello-sheet .fold-reveal { align-self: flex-start; background: transparent; border: 0; padding: 8px 0; min-height: 36px; font-size: 12px; color: #476650; text-decoration: underline; text-underline-offset: 3px; }
.leporello-sheet .fold-feedback { font-size: 13px; text-align: left; color: #365b48; }
.leporello-sheet .result-practice .fold-feedback { color: #86501f; }
.leporello-sheet .single-strip .result-practice { background: #fff7e9; box-shadow: inset 3px 0 #cda363; }
.leporello-sheet .fold-rating { flex-direction: row; flex-wrap: wrap; }
.leporello-sheet .fold-rating button, .leporello-sheet .fold-mic, .leporello-sheet .fold-confirm button { min-height: 44px; }
.leporello-sheet .pending-row td { color: #6a776c; font-size: 12px; padding: 10px 16px; background: #fafbf9; }
.leporello-sheet .pending-row .column-covered::after { content: ""; }
.leporello-sheet .pending-row ~ .pending-row { display: none; }
.leporello-sheet .answer-correct { color: var(--learning-green); }
.leporello-sheet .answer-practice { color: #86501f; }
#next-paper { min-height: 44px; }
button:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible { outline: 3px solid var(--learning-green); outline-offset: 3px; }
.sheet-flipping { animation: turn-sheet 350ms ease-out; transform-origin: center; }
@keyframes turn-sheet { from { opacity: .4; transform: rotateY(-12deg); } to { opacity: 1; transform: rotateY(0); } }
@media (prefers-reduced-motion: reduce) { .sheet-flipping { animation: none; } }
@media (max-width: 700px) {
  .paper-tools { grid-template-columns: 1fr; gap: 10px; }
  .paper-setting { display: grid; grid-template-columns: 100px minmax(0, 1fr); align-items: center; gap: 8px; }
  .paper-setting label { margin: 0; font-size: 12px; }
  .leporello-sheet th, .leporello-sheet td { padding: 12px 10px; }
  .leporello-sheet .column-fold { display: block; margin: 6px 0 0; min-height: 44px; }
  .leporello-sheet .single-strip .fold-panel strong { font-size: 19px; }
  .leporello-sheet .fold-form { flex-direction: column; align-items: stretch; }
  .leporello-sheet .single-strip .fold-input { flex: none; width: 100%; }
}
@media print {
  .paper-actions, .sheet-progress { display: none !important; }
  .leporello-sheet:not(.print-worksheet) { display: none !important; }
  .leporello-sheet.print-worksheet { display: table; min-width: 0; border-radius: 0; }
  .leporello-sheet th, .leporello-sheet td { padding: 3mm; }
  .leporello-sheet tr { break-inside: avoid; }
  .leporello-sheet .column-covered::after { content: none; }
}

.view-tabs { position: static; margin: 0 0 20px; padding: 0 0 12px; }
@media print { .round-direction-note { display: none !important; } }

.photo-preview-wrap { overflow: hidden; }
#photo-book-area { position: absolute; border: 2px solid #285e50; box-shadow: 0 0 0 9999px #203c3445; pointer-events: none; z-index: 1; }
#photo-split-line { z-index: 2; }
.book-crop-controls { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 0 14px; }
.book-crop-controls output { float: right; font-weight: 400; }
#photo-book-controls { border: 1px solid #dce5dd; border-radius: 12px; margin-top: 14px; }

.photo-list-picker { display: block; padding: 10px 12px; border-radius: 10px; }

/* A quiet learning surface, with navigation in a left-hand drawer. */
main { max-width: 1040px; padding-top: 22px; }
.view-tabs { position: static; border: 0; margin: 0 0 22px; padding: 0; gap: 14px; }
.menu-button { width: 48px; height: 48px; padding: 0; font-size: 24px; }
.page-title { font-size: 18px; font-weight: 700; }
.intro { margin: 24px 0; }
.intro h1 { font-size: clamp(26px, 4vw, 36px); letter-spacing: -.8px; }
.intro p { margin: 8px 0; font-size: 14px; }
.layout { display: block; }
.memory-bar { padding: 16px; background: #fff; border: 1px solid #e0e8df; border-radius: 16px; }
.memory-bar select { flex: 1; min-width: 160px; }
#paper-trainer { background: #fff; border: 1px solid #e0e8df; border-radius: 20px; padding: 24px; }
#paper-trainer > h2 { font-size: 19px; margin-bottom: 16px; }
.response-choice { max-width: 290px; }
.response-choice .paper-setting { display: grid; grid-template-columns: auto 1fr; gap: 12px; align-items: center; }
.response-choice label { margin: 0; white-space: nowrap; }
.learning-settings { margin-top: 16px; font-size: 14px; }
.learning-settings > summary { color: #52695c; padding: 8px 0; }
.learning-settings .paper-tools { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 12px; }
.leporello-sheet caption { display: none; }
.leporello-sheet .single-strip .fold-panel { min-height: 180px; justify-content: center; }
.leporello-sheet .single-strip .fold-panel strong { font-size: clamp(22px, 3vw, 30px); }
.leporello-sheet .single-strip td { padding: 24px 20px; }
.leporello-sheet .pending-row { display: none; }
.round-direction-note { margin: 12px 0 0; }
.navigation-drawer { position: fixed; inset: 0 auto 0 0; margin: 0; width: min(340px, 90vw); height: 100dvh; max-height: 100dvh; border: 0; border-radius: 0 20px 20px 0; padding: 24px; overflow-y: auto; }
.navigation-drawer .sectionhead { gap: 12px; margin-bottom: 28px; }
.navigation-drawer h2 { font-size: 20px; }
.drawer-links { display: grid; gap: 10px; }
.drawer-links button { text-align: left; min-height: 52px; background: #f0f5ee; }
.menu-settings { margin-top: 24px; padding-top: 20px; border-top: 1px solid #e0e8df; }
.menu-settings > summary { padding: 8px 0; color: #52695c; font-size: 14px; }
.menu-settings .note { margin: 14px 0; }
@media (max-width: 700px) {
  main { padding: 18px 14px; }
  header { padding: 14px; align-items: center; gap: 8px; }
  .memory-bar { gap: 10px; padding: 12px; }
  .memory-bar label { flex: 0 0 auto; }
  .memory-bar select { width: 70%; min-width: 0; }
  #open-photo-import { width: 100%; }
  #paper-trainer { padding: 16px 10px; }
  .learning-settings .paper-tools { grid-template-columns: 1fr; }
  .leporello-sheet .single-strip td { padding: 18px 10px; }
  .leporello-sheet .single-strip .fold-panel { min-height: 180px; }
  .leporello-sheet .single-strip .fold-panel strong { font-size: 21px; }
  .intro { margin: 20px 0; }
}
@media print {
  .learning-settings, .response-choice, .navigation-drawer { display: none !important; }
  #paper-trainer { border: 0; padding: 0; }
}
.memory-bar #memory-select { flex: 2 1 180px; }
.memory-bar #page-select { flex: 1 1 180px; }
.vocabulary-page { margin: 24px 0; padding: 18px; border: 1px solid #e0e8df; border-radius: 16px; background: #fff; }
.vocabulary-page h3 { margin: 0 0 10px; font-size: 17px; }
.page-arrange { font-size: 13px; margin-bottom: 14px; color: #52695c; }
.page-arrange form { display: flex; flex-wrap: wrap; align-items: end; gap: 10px; margin-top: 12px; }
.page-arrange label { flex: 1 1 180px; margin: 0; }
.page-arrange input, .page-arrange select { margin-top: 6px; }
#exam-folders { border: 1px solid #e0e8df; border-radius: 12px; padding: 12px; margin-top: 20px; }
@media (max-width: 700px) {
  .memory-bar { display: grid; grid-template-columns: auto minmax(0, 1fr); }
  .memory-bar select { width: 100%; }
  .vocabulary-page { padding: 12px; }
}
/* Keep the exercise high on the screen; navigation already names this view. */
#learning-view > .intro { display: none; }
#paper-trainer > h2 { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
#paper-trainer { margin-top: 20px; }
#paper-round { margin-top: 10px; }
.learning-settings { margin-top: 8px; }
footer { padding-top: 20px; padding-bottom: 20px; }
.navigation-drawer .sectionhead { display: flex; align-items: center; }
#settings-dialog { width: min(520px, calc(100% - 24px)); }
#settings-dialog .sectionhead { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
#settings-dialog .response-choice { max-width: none; }
#settings-dialog .response-choice .paper-setting { display: block; }
#settings-dialog .response-choice label { margin-bottom: 8px; }
#settings-dialog .learning-settings { margin-top: 20px; }
#settings-done { margin-top: 12px; width: 100%; }
.study-progress { display: grid; gap: 6px; margin-bottom: 16px; }
.study-progress progress { width: 100%; height: 10px; accent-color: var(--learning-green); }
#timed-clock { font-weight: 700; color: var(--learning-green); font-variant-numeric: tabular-nums; }
#settings-dialog .paper-tools { margin-top: 0; }
@media print { .study-progress, #timed-clock { display: none !important; } }
.reset-settings { border-top: 1px solid #dce3da; margin-top: 24px; padding-top: 16px; font-size: 13px; }
.reset-settings summary { padding: 8px 0; }

.drawer-heading { margin: 18px 0 2px; font-size: .85rem; color: #607770; font-weight: 600; }
.drawer-links button { border: 0; border-radius: 10px; background: transparent; min-height: 46px; padding: 12px 14px; }
.drawer-links button:hover, .drawer-links button:focus-visible { background: #e7f1ed; }

.profile-note { background: transparent; padding: 0; color: #607770; }
.sync-bar:has(#sync-status:empty):has(#retry-save[hidden]) { display: none; }
/* Guided learning and import flows */
.study-home h1 { font-size: clamp(1.5rem,4vw,2.1rem); }
.study-cards { display:grid; grid-template-columns:repeat(auto-fit,minmax(230px,1fr)); gap:14px; margin:20px 0 28px; }
.study-card { text-align:left; display:grid; gap:10px; background:#fff; color:#25463e; border:1px solid #dce6de; padding:20px; }
.study-card[aria-pressed="true"] { border:2px solid #36776a; background:#edf5f1; }
.study-card progress { width:100%; height:8px; accent-color:#36776a; }
.study-setup { display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;background:white;border:1px solid #dce6de;border-radius:18px;padding:20px;margin-bottom:20px; }
.study-setup label { display:grid;gap:8px; }
.study-setup button, #setup-message { grid-column:1/-1; }
.vocabulary-folder { border:1px solid #dce6de;border-radius:14px;padding:16px;margin:12px 0; }
.vocabulary-folder > summary { font-weight:700;cursor:pointer; }
.vocabulary-page > summary { cursor:pointer; }
.vocabulary-page > summary h3 { display:inline;font-size:1rem; }
.import-steps { font-weight:700;color:#286a5c; }
.import-controls { display:flex;gap:12px;justify-content:space-between;position:sticky;bottom:0;background:white;padding:12px 0; }
.import-step .photo-table { max-height:50dvh;overflow:auto; }
#photo-dialog .sectionhead { position:sticky;top:0;background:white;z-index:5; }
#photo-dialog { overscroll-behavior:contain; }
.round-result { font-size:1.1rem; }
#paper-strips > button { margin:6px; }
.sr-only { position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0; }
@media(max-width:600px) {
 .study-setup { grid-template-columns:1fr;padding:16px; }
 .study-cards { grid-template-columns:1fr; }
 .memory-bar { display:grid;grid-template-columns:1fr;gap:8px; }
 .paper-window { overflow:visible; }
 .fold-input { font-size:16px;max-width:100%; }
 #next-paper { width:100%; }
 dialog { max-width:calc(100vw - 20px);padding:16px; }
 .photo-table input { min-width:0;width:100%;font-size:16px; }
 .photo-table table { width:100%;table-layout:fixed; }
}
.handwriting-canvas { width:100%;height:300px;background:white;border:1px solid #93b3a6;border-radius:10px;touch-action:none; }
.handwriting button { font-size:.9rem;padding:10px;margin:4px 0; }
.setup-response-label { grid-column:1/-1; }
@media print { #study-home, #study-setup, #back-overview, .import-controls, .handwriting { display:none !important; } }
.leporello-sheet:not(.print-worksheet) tbody tr:not(.single-strip) { display:none; }
.leporello-sheet:not(.print-worksheet) caption { position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0); }
.study-library { margin:12px 0 24px; }
.study-library > summary, .setup-secondary > summary { cursor:pointer;color:#2d6558;font-weight:600; }
.setup-secondary { grid-column:1/-1; }
.drawer-study-list { display:grid;gap:6px;max-height:240px;overflow-y:auto; }
.drawer-study-list button { display:grid;gap:4px;width:100%;border:1px solid #dce6de;text-align:left;overflow-wrap:anywhere; }
.drawer-study-list button small { color:#607770;font-size:.75rem; }
.drawer-study-list button[aria-pressed="true"] { background:#e7f1ed;border-color:#36776a; }

.reminder-settings {border:1px solid #ccdcd0;border-radius:16px;padding:16px;margin-top:20px;display:grid;gap:12px}.reminder-times{display:flex;gap:16px}.reminder-times label{flex:1}.reminder-settings .hint,.reminder-settings p{font-size:.9rem;margin:0}

.managed-folder,.managed-base{border:1px solid #ccdcd0;border-radius:12px;padding:12px;margin:12px 0}.managed-folder summary,.managed-base summary{cursor:pointer}.managed-folder button{margin:12px 8px 0 0}.managed-folder details{padding:10px 0}.managed-words{padding-left:20px;overflow-wrap:anywhere}.managed-words li{padding:6px 0}

.home-progress{background:#edf4ee;border:1px solid #ccdcd0;border-radius:16px;padding:18px;margin:18px 0}.home-progress h2{font-size:1.15rem;margin:0 0 8px}.home-progress progress{width:100%;accent-color:#286458}.home-progress-counts{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:12px}.home-progress-counts strong,.home-progress-counts span{display:block}.home-progress-counts strong{font-size:1.35rem}.home-progress-counts span{font-size:.85rem}@media(max-width:600px){.home-progress-counts{grid-template-columns:repeat(2,1fr)}}

.routine-history{margin-top:16px}.routine-days{display:grid;grid-template-columns:repeat(7,1fr);gap:8px}.routine-days div{border:1px solid #ccdcd0;border-radius:8px;padding:8px;text-align:center}.routine-days strong,.routine-days span{display:block}.routine-days span{font-size:.75rem}.routine-days .routine-active{background:#d2e9da}@media(max-width:600px){.routine-days{grid-template-columns:repeat(4,1fr)}}

#activity-entries{padding-left:22px}#activity-entries li{padding:12px 0;border-bottom:1px solid #dce5dc}#activity-entries time{display:block;font-size:.85rem;color:#63786e}#activity-entries span{display:block;overflow-wrap:anywhere}

.admin-page > .card,.admin-page #admin-content > .card{margin:24px 0}.admin-page form label{display:block;margin:12px 0}.admin-page form input{width:100%}.admin-page details{margin:12px 0}.admin-page #csv-preview{max-height:360px;overflow:auto}.admin-page #admin-suggestions .card{margin:16px 0}

.managed-folder > summary{display:flex;flex-wrap:wrap;gap:12px;align-items:center}.managed-folder > summary > span:first-child{flex:1;min-width:180px}.test-management-actions{display:flex;flex-wrap:wrap;gap:8px}.test-management-actions button{padding:10px 12px;font-size:.85rem}#shared-library-content details details > summary{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between}#shared-library-content p{overflow-wrap:anywhere}#shared-library-target{width:100%;margin-bottom:16px}#manager-create-test{margin-bottom:16px}

.study-setup .photo-check{display:flex;grid-column:1/-1;align-items:center;gap:12px;min-height:44px;padding:8px 0;cursor:pointer;font-size:1rem}.study-setup .photo-check input[type="checkbox"]{width:24px;height:24px;flex:0 0 24px;margin:0;accent-color:var(--learning-green)}.study-setup .photo-check span{min-width:0}

.test-content-tools{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;background:#edf4ee;border:1px solid #ccdcd0;border-radius:12px;padding:14px 18px;margin:16px 0}.test-content-tools p{margin:0;flex:1;min-width:180px}#assign-own-options .photo-check{min-height:48px;cursor:pointer;padding:8px 0}#assign-own-options input[type="checkbox"]{flex:0 0 24px;width:24px;height:24px;accent-color:var(--learning-green)}

.leporello-sheet .single-strip .fold-input.pen-answer { min-height: 150px; font-size: 1.6rem; width: 100%; }
.writing-help summary { display:inline-flex; align-items:center; justify-content:center; min-width:44px; min-height:44px; font-size:1.4rem; }

.admin-word-row { display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:10px 0; }
.admin-word-row input { min-width:0;width:100%; }

#shared-library-content input[name="base-list"] { width:24px;height:24px;flex-shrink:0;accent-color:#285e50;margin-right:12px; }
#shared-library-add-selected { position:sticky;bottom:0;width:100%;margin-top:16px; }

.test-content-tools.empty-test { padding:24px;gap:14px; }
.test-content-tools.empty-test p { flex-basis:100%;font-size:1.1rem;font-weight:600; }
.test-content-tools.empty-test #add-test-content { background:transparent;color:#285e50;border:1px solid #b7ccc1; }

.leporello-sheet { border-radius:18px;overflow:hidden;border:1px solid #d6e3dd; }
.leporello-sheet th { background:#eef5f1;color:#28554a;font-size:15px;padding:16px 20px; }
.leporello-sheet .single-strip td { padding:26px 22px;vertical-align:middle; }
.leporello-sheet .single-strip .source-panel strong { font-size:clamp(23px,3vw,32px);line-height:1.4;overflow-wrap:anywhere; }
.leporello-sheet .single-strip .target-panel { gap:14px; }
.leporello-sheet .single-strip .fold-input { border-radius:12px;min-height:56px;font-size:18px;padding:14px; }
.leporello-sheet .single-strip .check-answer { min-height:56px;font-size:16px;border-radius:12px;padding:14px 20px; }
.leporello-sheet .fold-audio { align-self:flex-start;font-size:14px;min-height:44px;background:white;color:#285e50;border:1px solid #bfd2c8; }
.practice-options { margin-top:6px;font-size:13px;color:#52695c; }
.practice-options summary { cursor:pointer;padding:10px 0;min-height:44px; }
.practice-options button { margin-top:8px; }
.round-direction-note { margin:14px 0;color:#607268; }
.study-progress progress { height:8px;width:100%;accent-color:#285e50; }
.leporello-sheet .single-strip .fold-input.pen-answer { min-height:150px; }
#single-list-name { padding:8px 0;color:#607268;overflow-wrap:anywhere; }
@media(max-width:700px) { .leporello-sheet .single-strip td { padding:18px 12px; } .leporello-sheet th { padding:12px; } .leporello-sheet .single-strip .check-answer { width:100%; } }