/* ================================================================ course home */
#course {
  max-width: 1000px;
  margin: 0 auto;
  width: 100%;
}
.course-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 1.5rem;
}
.course-head h2 {
  color: var(--text);
  font-weight: 400;
  font-size: 1.6rem;
  margin: 0 0 0.35rem;
}
.course-sub {
  color: var(--g-gloss, var(--sub));
  font-size: 0.85rem;
}
/* the English names of the lesson kinds, once above the path (hidden with the other dojo glosses) */
.course-kinds {
  color: var(--g-gloss, var(--sub));
  font-size: 0.75rem;
  line-height: 1.6;
  margin: -1.25rem 0 1.75rem;
}
.course-kinds b {
  color: var(--text);
  font-weight: 400;
}
.course-stats {
  display: flex;
  align-items: flex-end;
  gap: 2rem;
}
.course-stats .value {
  font-size: 1.6rem;
}
.course-stats .of {
  color: var(--sub);
  font-size: 0.9rem;
}
.continue-btn {
  background: var(--main);
  color: var(--bg);
  border-radius: 0.5rem;
  padding: 0.7rem 1.1rem 0.7rem 1.3rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.95rem;
  transition: filter 0.15s, transform 0.1s;
}
.continue-btn:hover {
  filter: brightness(1.1);
}
.continue-btn:active {
  transform: translateY(1px);
}
.course-bar {
  height: 6px;
  background: var(--sub-alt);
  border-radius: 6px;
  margin: 1.25rem 0 2rem;
  overflow: hidden;
}
.course-bar div {
  height: 100%;
  background: var(--main);
  border-radius: 6px;
  transition: width 0.4s;
}
.unit {
  margin-bottom: 2.25rem;
}
.unit-head {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 0.9rem;
}
.unit-num {
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 50%;
  background: var(--sub-alt);
  color: var(--main);
  display: flex;
  align-items: center;
  justify-content: center;
}
.unit-title {
  color: var(--text);
  font-size: 1.1rem;
}
.unit-sub {
  color: var(--g-gloss, var(--sub));
  font-size: 0.75rem;
}
.unit-stars {
  margin-left: auto;
  color: var(--sub);
  font-size: 0.8rem;
}
.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 0.6rem;
}
.tile {
  background: var(--sub-alt);
  border-radius: 0.6rem;
  padding: 0.7rem 0.8rem 0.6rem;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-height: 6.2rem;
  border: 2px solid transparent;
  transition: transform 0.1s, border-color 0.15s;
}
.tile:not(.locked):hover {
  transform: translateY(-2px);
  border-color: var(--sub);
}
.tile-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.7rem;
  color: var(--sub);
}
.tile-n {
  font-size: 0.85rem;
  color: var(--text);
}
.tile-title {
  color: var(--text);
  font-size: 0.85rem;
  flex: 1;
  line-height: 1.3;
}
.tile.next {
  border-color: var(--main);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 transparent;
  }
  50% {
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--main) 25%, transparent);
  }
}
.tile.locked {
  opacity: 0.45;
  cursor: not-allowed;
}
.tile .lock {
  color: var(--sub);
  font-size: 0.9rem;
}
.tile.t-bilan .tile-type,
.tile.t-dictee .tile-type {
  color: var(--main);
}
.stars {
  letter-spacing: 0.05em;
  font-size: 0.85rem;
  color: var(--sub);
  opacity: 0.6;
}
.stars .on {
  color: var(--main);
  opacity: 1;
}
.tile.done .stars {
  opacity: 1;
}

/* ================================================================ lesson */
#lesson {
  max-width: 1000px;
  margin: 0 auto;
  width: 100%;
  position: relative;
}
#lesson-top {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.85rem;
}
#lesson-back {
  font-size: 0.85rem;
}
#lesson-title {
  color: var(--text);
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.lt-n {
  background: var(--sub-alt);
  color: var(--main);
  border-radius: 0.3rem;
  padding: 0.1rem 0.45rem;
  margin-right: 0.3rem;
}
.lt-sep {
  color: var(--sub);
}
#lesson-live {
  display: flex;
  gap: 1.25rem;
  color: var(--sub);
}
#lesson-live b {
  color: var(--main);
  font-weight: 400;
}
#lesson-progress {
  height: 4px;
  background: var(--sub-alt);
  border-radius: 4px;
  margin: 0.9rem 0 1.25rem;
  overflow: hidden;
}
#lesson-progress-bar {
  height: 100%;
  width: 0;
  background: var(--main);
  transition: width 0.15s;
}
#lesson-instr {
  color: var(--text);
  font-size: 0.8rem;
  text-align: center;
  margin-bottom: 1rem;
}
#lesson-stage {
  position: relative;
  background: var(--sub-alt);
  border-radius: 0.75rem;
  padding: 1.5rem 1.75rem;
  cursor: text;
}
#lesson-focus {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--sub-alt) 85%, transparent);
  backdrop-filter: blur(3px);
  border-radius: 0.75rem;
  color: var(--text);
  z-index: 3;
  cursor: pointer;
  text-align: center;
  padding: 1rem;
}
#lesson-input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  left: 0;
  top: 0;
  pointer-events: none;
  font-size: 16px;
}
#lesson-box .ch {
  border-radius: 0.2rem;
  transition: background 0.08s, color 0.08s;
}
#lesson-box .ch.ok {
  color: var(--sub);
}
#lesson-box .ch.bad {
  color: var(--error);
  background: color-mix(in srgb, var(--error) 18%, transparent);
}
#lesson-box .ch.sp.bad {
  background: color-mix(in srgb, var(--error) 45%, transparent);
}
#lesson-box .ch.cur {
  background: var(--main);
  color: var(--bg);
}
#lesson-box.shake {
  animation: shake 0.25s;
}
@keyframes shake {
  25% {
    transform: translateX(-4px);
  }
  75% {
    transform: translateX(4px);
  }
}

/* stream: flowing text, three lines visible */
#lesson-box.stream {
  font-size: 1.7rem;
  line-height: 1.75;
  height: calc(1.75em * 3);
  overflow: hidden;
  color: var(--text);
}
.stream-inner {
  transition: transform 0.2s ease-out;
}
.stream .w {
  white-space: nowrap;
}
.stream .ch {
  display: inline-block;
}

/* card: one word at a time */
#lesson-box.card-mode {
  text-align: center;
  padding: 0.5rem 0;
}
.card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
}
.card-word {
  font-size: 3rem;
  color: var(--text);
  min-height: 4.2rem;
}
.card-word .ch {
  display: inline-block;
  padding: 0 0.04em;
}
.dictee .card-word .ch:not(.ok):not(.bad):not(.cur) {
  color: var(--sub);
}
.card-en {
  color: var(--main);
  font-size: 1.05rem;
}
.card-prompt {
  color: var(--main);
  font-size: 1.6rem;
}
.card-meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--sub);
  font-size: 0.8rem;
}
.speak-btn {
  color: var(--sub);
  font-size: 1.1rem;
  line-height: 0;
  padding: 0.3rem;
  border-radius: 0.3rem;
}
.speak-btn:hover {
  color: var(--text);
}
.card-dots {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 1rem;
}
.card-dots span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--bg);
}
.card-dots .d {
  background: var(--sub);
}
.card-dots .c {
  background: var(--main);
}
#lesson-hint {
  text-align: center;
  min-height: 1.6rem;
  margin: 0.9rem 0 0.5rem;
  font-size: 0.95rem;
  color: var(--sub);
}
#lesson-hint .hint-fr {
  color: var(--text);
}
#lesson-hint .hint-en {
  color: var(--main);
}

/* ================================================================ keyboard + hands */
#lesson-kb {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 0.5rem;
}
.kb {
  --u: 2.35rem;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 0.6rem;
  background: var(--sub-alt);
  border-radius: 0.75rem;
}
.kb-row {
  display: flex;
  gap: 4px;
}
.kb-row:last-child {
  justify-content: center;
}
.key {
  width: var(--u);
  height: var(--u);
  border-radius: 0.35rem;
  background: var(--bg);
  color: var(--sub);
  font-size: 0.8rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  line-height: 1.05;
  border-bottom: 3px solid var(--fc, transparent);
  transition: background 0.08s, color 0.08s, transform 0.08s;
}
.key small {
  font-size: 0.6rem;
  opacity: 0.7;
}
.key.wide {
  font-size: 0.65rem;
}
.key.w15 {
  width: calc(var(--u) * 1.5);
}
.key.w175 {
  width: calc(var(--u) * 1.75);
}
.key.w2 {
  width: calc(var(--u) * 2 + 4px);
}
.key.w225 {
  width: calc(var(--u) * 2.25);
}
.key.w275 {
  width: calc(var(--u) * 2.75);
}
.key.space {
  width: calc(var(--u) * 6.5);
}
.key.f0,
.key.f9 {
  --fc: #e57373;
}
.key.f1,
.key.f8 {
  --fc: #ffb74d;
}
.key.f2,
.key.f7 {
  --fc: #81c784;
}
.key.f3 {
  --fc: #64b5f6;
}
.key.f6 {
  --fc: #ba68c8;
}
.key.f4,
.key.f5 {
  --fc: #90a4ae;
}
.key.next {
  background: var(--main);
  color: var(--bg);
  transform: translateY(-1px);
}
.key[data-step]::after {
  content: attr(data-step);
  position: absolute;
  top: -0.45rem;
  right: -0.35rem;
  background: var(--text);
  color: var(--bg);
  font-size: 0.6rem;
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.key {
  position: relative;
}
.hands {
  width: 360px;
  max-width: 80%;
  height: auto;
  margin-top: 0.6rem;
}
.hands .palm,
.hands .finger {
  fill: var(--sub-alt);
  stroke: var(--sub);
  stroke-width: 2;
}
.hands .finger.on {
  fill: var(--main);
  stroke: var(--main);
}
#finger-name {
  color: var(--sub);
  font-size: 0.75rem;
  min-height: 1rem;
  margin-top: 0.25rem;
}

/* ================================================================ lesson result */
#lesson-result {
  text-align: center;
  padding: 1rem 0;
  animation: fade 0.2s;
}
.lr-stars {
  font-size: 4rem;
  letter-spacing: 0.1em;
  color: var(--sub-alt);
}
.lr-stars span {
  display: inline-block;
}
.lr-stars .on {
  color: var(--main);
  animation: pop 0.4s backwards;
}
@keyframes pop {
  0% {
    transform: scale(0.3);
    opacity: 0;
  }
  70% {
    transform: scale(1.25);
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}
.lr-msg {
  color: var(--text);
  margin: 0.5rem 0 1.5rem;
}
.lr-msg b {
  color: var(--main);
  font-weight: 400;
}
.lr-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
}
.lr-rules {
  color: var(--sub);
  font-size: 0.72rem;
  margin-top: 1.25rem;
}
.lr-label {
  color: var(--g-gloss, var(--sub));
  margin: 1.5rem 0 0.5rem;
}
.review-list-lesson {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}
.lr-buttons {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}
.wide-btn.primary {
  background: var(--main);
  color: var(--bg);
}
.wide-btn.primary:hover {
  filter: brightness(1.1);
  background: var(--main);
  color: var(--bg);
}
.lr-keys {
  color: var(--sub);
  font-size: 0.72rem;
  margin-top: 1rem;
}

@media (max-width: 700px) {
  #lesson-kb {
    display: none;
  }
  #lesson-box.stream {
    font-size: 1.25rem;
  }
  .card-word {
    font-size: 2.2rem;
  }
  .lr-stars {
    font-size: 3rem;
  }
  .course-stats {
    width: 100%;
    justify-content: space-between;
  }
}

/* ================================================================ weak spots */
.weak-box {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  background: var(--sub-alt);
  border-radius: 0.75rem;
  padding: 1rem 1.25rem;
  margin: -0.75rem 0 2rem;
}
.weak-title {
  color: var(--sub);
  font-size: 0.8rem;
  margin-bottom: 0.5rem;
}
.weak-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.weak-chip {
  background: var(--bg);
  border-radius: 0.4rem;
  padding: 0.3rem 0.55rem;
  font-size: 0.75rem;
  color: var(--sub);
}
.weak-chip b {
  color: var(--error);
  font-weight: 400;
  font-size: 0.9rem;
}
.heat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(4.2rem, 1fr));
  gap: 0.4rem;
  margin-bottom: 1.25rem;
}
.heat {
  border-radius: 0.45rem;
  padding: 0.45rem 0.3rem;
  text-align: center;
  background: color-mix(in srgb, var(--error) var(--heat), var(--sub-alt));
}
.heat .c {
  font-size: 1.3rem;
  color: var(--text);
}
.heat .m {
  font-size: 0.62rem;
  color: var(--text);
  opacity: 0.75;
}
.weak-words {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}