.akordi-scale-lesson-embed,
.akordi-scale-exercise-embed {
  margin: 24px 0;
}

.akordi-scale-lesson-card {
  padding: 18px;
  border: 1px solid #dedede;
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.06);
}

.akordi-scale-lesson-title {
  margin: 0 0 6px;
}

.akordi-scale-lesson-info {
  margin: 0 0 12px;
  color: #555;
}

.akordi-scale-lesson-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
}

.akordi-scale-lesson-controls button {
  border: 0;
  border-radius: 24px;
  padding: 10px 18px;
  background: #d71920;
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}

.akordi-scale-lesson-controls button:hover {
  opacity: 0.88;
}

.akordi-scale-lesson-controls label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.akordi-scale-lesson-controls input[type="number"] {
  width: 78px;
  padding: 8px;
  border: 1px solid #aaa;
  border-radius: 6px;
}

.akordi-scale-note-circle {
  transition: r 0.12s ease, stroke-width 0.12s ease, filter 0.12s ease, opacity 0.18s ease;
}

.akordi-scale-note-label {
  transition: opacity 0.18s ease;
}

.akordi-scale-note-circle.is-active {
  r: 22px;
  stroke-width: 5px;
  filter: drop-shadow(0 0 7px rgba(215, 25, 32, 0.8));
}

@media (max-width: 700px) {
  .akordi-scale-lesson-card {
    padding: 12px;
  }

  .akordi-scale-lesson-controls {
    align-items: stretch;
  }

  .akordi-scale-lesson-controls button,
  .akordi-scale-lesson-controls label {
    width: 100%;
    justify-content: center;
  }
}


.akordi-fingering-tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  width: 100%;
  margin-top: 4px;
}

.akordi-fingering-switch {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-weight: 700;
  cursor: pointer;
}

.akordi-fingering-switch input {
  width: 18px;
  height: 18px;
}

.akordi-fingering-legend {
  font-size: 0.92rem;
  color: #555;
}

.akordi-scale-note-label.is-fingering {
  font-size: 14px;
}

/* Kod višepozicijske putanje brojevi su tonovi koje učenik svira.
 * Ostali tonovi ostaju kao orijentaciona mapa skale, ali su zatamnjeni. */
.akordi-scale-note-circle.is-fingering-context,
.akordi-scale-note-label.is-fingering-context {
  opacity: 0.18;
}

.akordi-scale-note-circle.is-fingering-path,
.akordi-scale-note-label.is-fingering-path,
.akordi-scale-note-circle.is-fingering-context.is-active {
  opacity: 1;
}

@media (max-width: 700px) {
  .akordi-fingering-tools,
  .akordi-fingering-switch,
  .akordi-fingering-legend {
    width: 100%;
  }

  .akordi-fingering-switch {
    justify-content: center;
  }

  .akordi-fingering-legend {
    text-align: center;
    line-height: 1.5;
  }
}

/* Advanced trening kartica */
.akordi-scale-training {
  margin: 24px 0 30px;
  padding: 22px;
  border: 1px solid #dedede;
  border-radius: 14px;
  background: #ffffff;
  box-shadow: 0 5px 18px rgba(0, 0, 0, 0.06);
}
.akordi-scale-training__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 18px;
}
.akordi-scale-training__level {
  margin-bottom: 5px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #c62828;
}
.akordi-scale-training__title {
  margin: 0;
  font-size: 1.55rem;
  line-height: 1.25;
}
.akordi-scale-training__difficulty {
  flex: 0 0 auto;
  font-size: 1.2rem;
  letter-spacing: 2px;
  color: #c62828;
}
.akordi-scale-training__meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}
.akordi-scale-training__meta > div {
  padding: 12px 14px;
  border-radius: 10px;
  background: #f6f6f6;
}
.akordi-scale-training__meta span,
.akordi-scale-training__meta strong {
  display: block;
}
.akordi-scale-training__meta span {
  margin-bottom: 3px;
  font-size: 0.8rem;
  color: #666666;
}
.akordi-scale-training__progress-wrap {
  margin-bottom: 18px;
}
.akordi-scale-training__progress-text {
  margin-bottom: 7px;
  font-weight: 600;
}
.akordi-scale-training__progress {
  height: 10px;
  overflow: hidden;
  border-radius: 999px;
  background: #e8e8e8;
}
.akordi-scale-training__progress > span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: #c62828;
  transition: width 0.25s ease;
}
.akordi-scale-training__checklist {
  display: grid;
  gap: 9px;
}
.akordi-scale-training__item {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 11px 12px;
  border: 1px solid #e5e5e5;
  border-radius: 9px;
  cursor: pointer;
  transition: border-color 0.18s ease, background 0.18s ease;
}
.akordi-scale-training__item:hover {
  border-color: #c62828;
  background: #fff8f8;
}
.akordi-scale-training__item input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.akordi-scale-training__box {
  position: relative;
  width: 21px;
  height: 21px;
  flex: 0 0 21px;
  border: 2px solid #a7a7a7;
  border-radius: 5px;
  background: #ffffff;
}
.akordi-scale-training__item input:checked + .akordi-scale-training__box {
  border-color: #c62828;
  background: #c62828;
}
.akordi-scale-training__item input:checked + .akordi-scale-training__box::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border: solid #ffffff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}
.akordi-scale-training__item input:checked ~ .akordi-scale-training__item-text {
  text-decoration: line-through;
  color: #777777;
}
.akordi-scale-training__reset {
  margin-top: 16px;
  padding: 8px 12px;
  border: 1px solid #cccccc;
  border-radius: 7px;
  background: #ffffff;
  cursor: pointer;
}
.akordi-scale-training__reset:hover {
  border-color: #c62828;
  color: #c62828;
}
.akordi-scale-training.is-complete {
  border-color: #c62828;
}
@media (max-width: 600px) {
  .akordi-scale-training {
    padding: 17px;
  }
  .akordi-scale-training__header {
    display: block;
  }
  .akordi-scale-training__difficulty {
    margin-top: 10px;
  }
  .akordi-scale-training__meta {
    grid-template-columns: 1fr;
  }
}

/* Advanced patterni: ritam i alternate picking */
.akordi-scale-exercise-visual:empty {
  display: none;
}

.akordi-scale-exercise-visual {
  margin: 8px 0 14px;
}

.akordi-rhythm-badge {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 8px 14px;
  border: 1px solid #d7d7d7;
  border-radius: 999px;
  background: #f7f7f7;
  font-weight: 700;
}

.akordi-pick-strip {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 9px 3px 12px;
  scrollbar-width: thin;
}

.akordi-pick-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  min-width: 34px;
  height: 34px;
  border: 1px solid #d5d5d5;
  border-radius: 8px;
  background: #f7f7f7;
  font-size: 1.25rem;
  font-weight: 800;
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.akordi-pick-step.is-active {
  transform: translateY(-2px);
  border-color: #c62828;
  background: #c62828;
  color: #ffffff;
}

@media (max-width: 700px) {
  .akordi-pick-step {
    width: 30px;
    min-width: 30px;
    height: 30px;
  }
}


.akordi-scale-shortcode-error {
  margin: 16px 0;
  padding: 12px 14px;
  border: 1px solid #c62828;
  border-radius: 8px;
  background: #fff4f4;
  font-weight: 600;
}

/* Engine v4: harmonijske uloge su vidljive samo tokom reprodukcije. */
.akordi-scale-exercise-card .akordi-scale-note-circle.is-role-chord { fill:#1f7a4d; stroke:#145234; stroke-width:3px; }
.akordi-scale-exercise-card .akordi-scale-note-circle.is-role-tension { fill:#f4b942; stroke:#946b0b; stroke-width:3px; }
.akordi-scale-exercise-card .akordi-scale-note-circle.is-role-passing { fill:#4b87c5; stroke:#285780; stroke-width:3px; }
.akordi-scale-exercise-card .akordi-scale-note-circle.is-role-outside { fill:#8b4bb7; stroke:#55266f; stroke-width:4px; stroke-dasharray:3 2; }
.akordi-scale-exercise-card .akordi-scale-note-circle.is-active { filter:drop-shadow(0 0 7px rgba(215,25,32,.85)); stroke-width:5px; }

/* Engine v4.3: čitljiv tok, fokus na sadašnji i sljedeći ton. */
.akordi-scale-finger-badge { display:none; fill:#c62828; stroke:#fff; stroke-width:3px; paint-order:stroke; font-size:12px; font-weight:900; pointer-events:none; }
.akordi-scale-finger-badge.is-visible { display:block; }
.akordi-v4-guide { display:grid; gap:8px; }
.akordi-v4-guide-title { color:#555; font-size:.86rem; font-weight:800; text-transform:uppercase; letter-spacing:.04em; }
.akordi-v4-progression,.akordi-v4-sequence { display:flex; gap:7px; overflow-x:auto; padding:2px 2px 8px; scrollbar-width:thin; }
.akordi-v4-chord { min-width:92px; padding:9px 14px; border:2px solid #ddd; border-radius:9px; background:#fff; text-align:center; transition:.15s ease; }
.akordi-v4-chord.is-active { border-color:#c62828; background:#fff2f2; color:#a2161b; box-shadow:0 2px 8px rgba(198,40,40,.18); }
.akordi-v4-step { position:relative; display:grid; justify-items:center; align-content:center; min-width:62px; min-height:58px; padding:5px; border:1px solid #d8d8d8; border-radius:9px; background:#fff; color:#555; transition:.15s ease; }
.akordi-v4-step-number { position:absolute; top:3px; left:6px; color:#999; font-size:.68rem; }
.akordi-v4-step-note { font-size:1.08rem; }
.akordi-v4-step small { font-size:.68rem; }
.akordi-v4-step.is-complete { opacity:.48; }
.akordi-v4-step.is-next { border-style:dashed; border-color:#4b87c5; }
.akordi-v4-step.is-active { border-color:#c62828; background:#c62828; color:#fff; transform:translateY(-2px); }
.akordi-v4-step.is-active .akordi-v4-step-number { color:#fff; }
.akordi-v4-view-tools { display:flex; flex-wrap:wrap; gap:8px 18px; padding:7px 10px; border-radius:8px; background:#f5f5f5; }
.akordi-v4-tool { cursor:pointer; font-weight:650; }
.akordi-v4-note-legend { display:flex; flex-wrap:wrap; align-items:center; gap:10px 20px; padding:3px 4px 0; color:#444; font-size:.9rem; font-weight:650; }
.akordi-v4-note-legend__item { display:inline-flex; align-items:center; gap:7px; }
.akordi-v4-note-legend__dot { display:inline-block; width:20px; height:20px; border-radius:50%; box-sizing:border-box; }
.akordi-v4-note-legend__dot.is-current { border:3px solid #145234; background:#1f7a4d; box-shadow:0 0 5px rgba(215,25,32,.65); }
.akordi-v4-note-legend__dot.is-next { border:3px dashed #4b87c5; background:#fff; }
.akordi-v4-focus-mode .akordi-scale-note-circle,.akordi-v4-focus-mode .akordi-scale-note-label { opacity:.14; transition:opacity .15s ease,fill .15s ease; }
.akordi-v4-focus-mode .akordi-scale-note-circle.is-v4-current,.akordi-v4-focus-mode .akordi-scale-note-label.is-v4-current,.akordi-v4-focus-mode .akordi-scale-note-circle.is-v4-next,.akordi-v4-focus-mode .akordi-scale-note-label.is-v4-next { opacity:1; }
.akordi-v4-focus-mode .akordi-scale-note-circle.is-v4-next { fill:#fff; stroke:#4b87c5; stroke-width:4px; stroke-dasharray:4 2; }
.akordi-v4-focus-mode .akordi-scale-note-circle.is-chord-map,.akordi-v4-focus-mode .akordi-scale-note-label.is-chord-map { opacity:.72; }
.akordi-v4-focus-mode .akordi-scale-note-circle.is-chord-map { stroke:#1f7a4d; stroke-width:3px; }
@media (max-width:600px) { .akordi-v4-step{min-width:54px;min-height:52px}.akordi-v4-chord{min-width:78px;padding:7px 10px} }


/* Engine V5: forma, napetost, registri i kadenca kroz vrijeme. */
.akordi-v5-development-mode {
  position: relative;
}
.akordi-v5-development-mode::before {
  content: "ENGINE V5.4.1";
  display: inline-block;
  margin-bottom: 10px;
  padding: 4px 8px;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
}
.akordi-v5-development-mode .akordi-rhythm-badge {
  max-width: 100%;
  overflow-wrap: anywhere;
}
.akordi-v5-guide {
  display: grid;
  gap: 10px;
  margin: 12px 0;
  padding: 12px;
  border: 1px solid #d7dde6;
  border-radius: 12px;
  background: linear-gradient(145deg, #f8fafc, #eef3f8);
}
.akordi-v5-guide-title {
  color: #26364a;
  font-size: .82rem;
  font-weight: 800;
  letter-spacing: .07em;
  text-transform: uppercase;
}
.akordi-v5-progression {
  display: flex;
  gap: 7px;
  overflow-x: auto;
  padding: 2px 2px 7px;
  scrollbar-width: thin;
}
.akordi-v5-chord {
  flex: 0 0 auto;
  min-width: 92px;
  padding: 8px 12px;
  border: 2px solid #cfd6df;
  border-radius: 9px;
  background: #fff;
  color: #334155;
  font-weight: 750;
  text-align: center;
  transition: .15s ease;
}
.akordi-v5-chord.is-active {
  border-color: #b32632;
  background: #fff0f1;
  color: #971d27;
  box-shadow: 0 2px 8px rgba(179,38,50,.16);
}
.akordi-v5-timeline {
  display: flex;
  gap: 7px;
  overflow-x: auto;
  padding: 5px 2px 9px;
  scrollbar-width: thin;
}
.akordi-v5-bars {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 2px 2px 9px;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
}
.akordi-v5-bar {
  flex: 0 0 min(430px, calc(100% - 12px));
  min-width: 0;
  padding: 8px;
  border: 1px solid #cbd5e1;
  border-left: 4px solid #475569;
  border-radius: 9px;
  background: rgba(255,255,255,.72);
  opacity: .68;
  scroll-snap-align: start;
  transition: opacity .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.akordi-v5-bar.is-active {
  border-color: #b32632;
  border-left-color: #b32632;
  box-shadow: 0 3px 10px rgba(179,38,50,.14);
  opacity: 1;
}
.akordi-v5-bar-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 5px 12px;
  padding: 0 3px 5px;
  color: #334155;
  font-size: .76rem;
}
.akordi-v5-bar-header span {
  color: #64748b;
  font-weight: 650;
}
.akordi-v5-step {
  position: relative;
  display: grid;
  flex: 0 0 46px;
  min-height: calc(43px + (var(--v5-level, 0) * 5px));
  place-content: center;
  padding: 6px 4px;
  border: 1px solid #cfd6df;
  border-top: calc(3px + (var(--v5-level, 0) * 2px)) solid #6c7f96;
  border-radius: 8px;
  background: #fff;
  color: #334155;
  text-align: center;
  transition: transform .15s ease, background .15s ease, opacity .15s ease;
}
.akordi-v5-step-value {
  font-size: .94rem;
  font-weight: 800;
}
.akordi-v5-step-meta {
  min-height: 1em;
  max-width: 44px;
  overflow: hidden;
  color: #65758a;
  font-size: .6rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.akordi-v5-step.is-complete { opacity: .45; }
.akordi-v5-step.is-next {
  border-color: #3577b9;
  border-style: dashed;
}
.akordi-v5-step.is-active {
  border-color: #9d1f2a;
  background: #b32632;
  color: #fff;
  transform: translateY(-3px);
}
.akordi-v5-step.is-active .akordi-v5-step-meta { color: #fff; }
.akordi-v5-status {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: 5px 12px;
  padding: 9px 11px;
  border-radius: 8px;
  background: #26364a;
  color: #fff;
}
.akordi-v5-step.is-accent::after {
  content: ">";
  position: absolute;
  top: -15px;
  left: 50%;
  color: #a21d29;
  font-size: .82rem;
  font-weight: 900;
  transform: translateX(-50%);
}
.akordi-v5-step.is-structural {
  box-shadow: inset 0 0 0 2px #23874d;
}
.akordi-v5-step.is-rest {
  background: #f1f5f9;
  border-style: dashed;
}
.akordi-v5-status strong { font-size: 1.08rem; }
.akordi-v5-status span { opacity: .86; }
.akordi-v5-status-reason,
.akordi-v5-status-next {
  grid-column: 1 / -1;
}
.akordi-v5-status-reason {
  padding-top: 4px;
  border-top: 1px solid rgba(255,255,255,.2);
  font-weight: 650;
}
.akordi-v5-status-next {
  font-size: .82rem;
}
.akordi-v5-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  padding: 8px 10px;
  border-radius: 8px;
  background: #e7edf4;
}
.akordi-v5-tool {
  cursor: pointer;
  color: #26364a;
  font-weight: 650;
}
.akordi-v5-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 16px;
  color: #475569;
  font-size: .78rem;
  font-weight: 650;
}
.akordi-v5-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.akordi-v5-legend-item i {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.akordi-v5-legend-item i.is-role-chord { background: #23874d; }
.akordi-v5-legend-item i.is-role-passing { background: #d5a21c; }
.akordi-v5-legend-item i.is-role-tension { background: #df6b25; }
.akordi-v5-legend-item i.is-role-outside { background: #c42c38; }
@media (max-width: 600px) {
  .akordi-v5-guide { padding: 10px; }
  .akordi-v5-step { flex-basis: 42px; }
  .akordi-v5-bar { flex-basis: min(86vw, 360px); }
  .akordi-v5-chord { min-width: 78px; padding: 7px 9px; }
  .akordi-v5-status { grid-template-columns: 1fr; }
}