.mobile-characters-tab,
.mobile-audio-access {
  display: none;
}

.practice-setup-section {
  display: contents;
}

.setup-section-heading,
.setup-choice-icon,
.setup-choice-note,
.mobile-session-options {
  display: none;
}

.field .custom-pool-presets {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 3px;
  height: auto;
  margin-bottom: 8px;
}

.custom-pool-presets button {
  min-width: 0;
  padding: 7px 6px;
  font-size: 11px;
  white-space: normal;
}

#custom-characters:disabled {
  opacity: .55;
  cursor: not-allowed;
  background: var(--soft-green);
}

.practice-round-panel {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px;
  text-align: center;
}

body[data-practice-round='true'] .writing-columns {
  display: none;
}

.practice-target {
  margin: 12px 0;
  color: var(--ink);
  font-family: 'Courier New', monospace;
  font-size: clamp(30px, 5vw, 58px);
  font-weight: 700;
  overflow-wrap: anywhere;
}

.practice-response {
  margin: 12px auto;
  max-width: 560px;
}

.practice-round-alert {
  min-height: 30px;
  margin: 8px 0;
  color: var(--red);
  font-size: 14px;
  line-height: 1.6;
}

.practice-round-alert.correct {
  color: var(--green);
}

.practice-round-heading h2 {
  margin: 0 0 8px;
  color: var(--ink);
  font-size: 20px;
  font-weight: 600;
}

.practice-round-status,
.practice-morse-help {
  margin: 6px 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.practice-correct-answer {
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--green);
  background: var(--soft-green);
  font-size: 20px;
}

.practice-correct-answer .morse-pattern {
  display: block;
  white-space: normal;
  overflow-wrap: anywhere;
  font-size: 16px;
  letter-spacing: 2px;
}

.practice-round-panel :is(#show-correct-answer, #replay-practice-round, #check-practice-round) {
  min-height: 42px;
  margin: 4px;
}

#practice-morse-entry {
  width: 100%;
  min-height: 64px;
  max-height: 150px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Courier New', monospace;
  font-size: 20px;
  line-height: 1.5;
  overflow-wrap: anywhere;
  resize: none;
}

.practice-morse-paddles {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 22px;
  margin: 16px 0;
}

.practice-morse-paddle {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  touch-action: manipulation;
}

.practice-morse-paddle strong { font-size: 25px; line-height: 1; }
.practice-morse-paddle span { font-size: 12px; }
.practice-morse-space {
  min-width: 70px;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--paper);
  color: var(--ink);
  font-size: 14px;
}

.practice-morse-paddles [data-practice-morse='.' ],
.practice-morse-paddles [data-practice-morse='-'] {
  width: 64px;
  height: 64px;
  padding: 0;
  border: 1px solid var(--green);
  border-radius: 50%;
  background: var(--soft-green);
  color: var(--ink);
  font-size: 16px;
}

.mobile-keyboard.qwerty-keyboard {
  display: flex;
  flex-direction: column;
  gap: 7px;
  max-width: 560px;
  margin: 12px auto;
}

.qwerty-row {
  display: flex;
  justify-content: center;
  gap: 4px;
}

.qwerty-row:nth-child(3) { padding: 0 14px; }
.qwerty-row:nth-child(4) { padding: 0 35px; }

.qwerty-row .mobile-key {
  flex: 1;
  min-width: 0;
  max-width: 48px;
  min-height: 44px;
  padding: 5px 0;
  font-size: 16px;
}

.characters-page {
  max-width: 780px;
  margin: 0 auto;
}

.characters-page .character-reference-grid {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

@media (min-width: 761px) {
  .practice-round-panel .qwerty-keyboard,
  .practice-round-panel .practice-morse-paddles {
    display: none;
  }
}

@media (max-width: 760px) {
  .sidebar .mode-nav {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 3px;
  }

  .mobile-characters-tab {
    display: flex;
  }

  .sidebar .mode-button,
  html[data-theme='dark'] .sidebar .mode-button {
    flex-direction: column;
    min-height: 44px;
    padding: 4px 2px;
    font-size: 11px;
    line-height: 1.25;
    gap: 3px;
  }

  .mode-button svg {
    width: 15px;
    height: 15px;
  }

  body[data-mode='learn'] .mobile-audio-access,
  body[data-mode='practice'] .mobile-audio-access {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    min-height: 40px;
    margin-bottom: 8px;
    color: var(--muted);
    font-size: 12px;
  }

  .mobile-audio-access .button {
    min-height: 36px;
    padding: 6px 10px;
    border-color: var(--line);
    font-size: 12px;
  }

  body.keyboard-open.audio-settings-open .app-shell > .sidebar {
    display: block;
    min-height: 0;
    padding: 0;
    border: 0;
  }

  body.keyboard-open.audio-settings-open .mode-nav {
    display: none;
  }

  .bottom-note {
    display: none !important;
  }

  .receiver-actions .action-help {
    display: none;
  }

  .receiver-actions #submit-practice:disabled {
    display: none;
  }

  body[data-mode='practice'][data-practice-phase='idle'] #practice-round-panel,
  body[data-mode='practice'][data-practice-phase='idle'] .writing-columns,
  body[data-mode='practice'][data-practice-phase='idle'] #practice-audio-bar {
    display: none;
  }

  body[data-mode='practice'][data-practice-phase='idle'] .receiver {
    border: 0;
    background: transparent;
  }

  body[data-mode='practice'][data-practice-phase='idle'] :is(.receiver-toolbar, .progress-track),
  body[data-mode='practice'][data-practice-phase='idle'] #message:empty {
    display: none;
  }

  body[data-mode='practice'][data-practice-phase='idle'] .receiver-actions {
    min-height: 44px;
    padding: 0;
    border: 0;
    background: transparent;
  }

  body[data-mode='practice'][data-practice-phase='idle'] :is(.action-group, #start-practice) {
    width: 100%;
  }

  body[data-mode='practice'][data-practice-phase='idle'] #start-practice {
    min-height: 46px;
    font-size: 13px;
  }

  .practice-card {
    padding: 12px;
    margin-bottom: 12px;
  }

  .practice-card-top,
  .practice-fields {
    padding: 0;
  }

  .practice-card-top {
    flex-direction: column;
    align-items: stretch;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 16px;
  }

  .practice-card-top .small-label {
    display: none;
  }

  .practice-card .segmented {
    max-width: 100%;
  }

  .practice-setup-section {
    display: grid;
    gap: 8px;
    min-width: 0;
  }

  .practice-card .setup-section-heading {
    display: block;
    margin: 0;
    color: var(--ink);
    font-size: 11px;
    font-weight: 600;
    line-height: 1.3;
  }

  .practice-card :is(.practice-direction, .practice-category) {
    display: grid;
    gap: 8px;
    padding: 0;
    border: 0;
    background: transparent;
  }

  .practice-card .practice-direction {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .practice-card .practice-category {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .practice-card :is(.practice-direction, .practice-category) button {
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--paper);
    box-shadow: none;
    color: var(--muted);
  }

  .practice-card :is(.practice-direction, .practice-category) button.active {
    border-color: var(--green);
    background: var(--soft-green);
    color: var(--ink);
  }

  .practice-card .practice-direction button {
    display: grid;
    grid-template-columns: 22px minmax(0, 1fr);
    align-content: center;
    align-items: center;
    gap: 3px 7px;
    min-height: 68px;
    padding: 10px 8px;
    text-align: left;
  }

  .practice-card .setup-choice-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    color: inherit;
  }

  .practice-card .practice-direction .setup-choice-icon {
    grid-column: 1;
    grid-row: 1;
    width: 22px;
    height: 24px;
  }

  .practice-card .practice-direction .setup-choice-icon svg {
    width: 21px;
    height: 21px;
  }

  .practice-card .setup-choice-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    line-height: 1.3;
  }

  .practice-card .setup-choice-note {
    display: block;
    font-size: 10px;
    font-weight: 400;
    line-height: 1.4;
  }

  .practice-card .setup-choice-copy {
    display: flex;
    flex-direction: column;
    gap: 3px;
    min-width: 0;
  }

  .practice-card .practice-category button {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 64px;
    padding: 8px;
  }

  .practice-card .practice-category .setup-choice-icon {
    height: 24px;
    font-family: inherit;
    font-size: 23px;
    font-weight: 600;
    line-height: 1;
  }

  .practice-card .practice-category .setup-choice-icon svg {
    width: 21px;
    height: 21px;
  }

  .practice-card .practice-category .setup-choice-label {
    font-size: 12px;
  }

  .practice-fields .session-length-field {
    grid-column: 1 / -1;
    min-width: 0;
  }

  .practice-fields .session-length-field > label {
    display: block;
    margin-bottom: 0;
    color: var(--ink);
    font-size: 11px;
    font-weight: 600;
    line-height: 1.3;
  }

  .session-length-field #session-length {
    display: none;
  }

  .mobile-session-options {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
    margin-top: 8px;
  }

  .mobile-session-options button {
    min-height: 40px;
    padding: 8px 6px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--paper);
    color: var(--muted);
    font-size: 12px;
    font-weight: 500;
    line-height: 1.3;
  }

  .mobile-session-options button.active {
    border-color: var(--green);
    background: var(--soft-green);
    color: var(--ink);
  }

  .practice-fields .practice-count-field {
    display: flex;
    grid-column: 1 / -1;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding-top: 2px;
  }

  .practice-fields .practice-count-field label {
    margin-bottom: 0;
    color: var(--ink);
  }

  .practice-fields .practice-count-field input {
    width: 90px;
    flex: 0 0 90px;
    text-align: center;
  }

  .practice-fields .practice-word-fields {
    grid-column: 1 / -1;
    min-width: 0;
  }

  .practice-card-top .segmented button {
    flex: 1;
  }

  .practice-card .segmented button {
    min-height: 40px;
    padding: 7px 12px;
    font-size: 13px;
    white-space: normal;
  }

  .practice-card .custom-pool-presets button {
    padding: 7px 4px;
    font-size: 11px;
  }

  .practice-fields {
    gap: 14px;
  }

  .practice-fields .field :is(input, select) {
    height: 42px;
    min-height: 42px;
    padding: 8px 10px;
    font-family: inherit;
    font-size: 16px;
    line-height: 1.4;
  }

  .practice-fields .field :is(label, .field-label) {
    font-size: 12px;
  }

  .practice-fields .field p {
    margin-top: 5px;
    font-size: 11px;
    line-height: 1.5;
  }

  body[data-mode='practice'] .character-reference-panel {
    display: none;
  }

  body[data-mode='learn']:not([data-training-active='true']) :is(.learn-copy-list, .learn-answer-list) {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 4px;
    padding: 2px 0 6px;
    max-height: 242px;
    scrollbar-width: thin;
  }

  body[data-mode='learn']:not([data-training-active='true']) :is(.writing-pane, .answer-pane) {
    padding-right: 8px;
    padding-left: 8px;
  }

  body[data-mode='learn']:not([data-training-active='true']) :is(.learn-copy-list .copy-cell, .learn-answer-list .answer-cell) {
    width: 100%;
    min-width: 0;
    height: 45px;
    padding: 9px 0 4px;
    border-radius: 5px;
    font-size: 14px;
  }

  body[data-mode='learn']:not([data-training-active='true']) .learn-answer-list .answer-cell {
    gap: 3px;
  }

  body[data-mode='learn']:not([data-training-active='true']) .learn-answer-list .answer-letter {
    font-size: 14px;
  }

  body[data-mode='learn']:not([data-training-active='true']) .learn-answer-list .answer-morse {
    font-size: 8px;
    letter-spacing: 0;
    line-height: 1.2;
  }

  body[data-mode='learn']:not([data-training-active='true']) :is(.learn-copy-list, .learn-answer-list) .cell-index {
    top: 3px;
    left: 3px;
    font-size: 6px;
  }

  body[data-mode='learn']:not([data-training-active='true']) .learn-copy-list .copy-cell svg {
    width: 8px;
    height: 8px;
    top: 2px;
    right: 2px;
  }

  .practice-round-panel {
    width: 100%;
    padding: 14px 8px;
  }

  .practice-round-tools {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px;
  }

  .practice-round-tools .button {
    margin: 0;
    min-height: 42px;
    padding: 8px 10px;
    font-size: 11px;
  }

  .practice-round-panel:has(.practice-morse-entry) .practice-target {
    margin: 8px 0;
  }

  #practice-morse-entry {
    height: 64px;
    padding: 8px 10px;
    font-size: 18px;
    line-height: 1.3;
  }

  #practice-morse-entry::placeholder {
    font-size: 14px;
  }

  .practice-morse-paddles {
    margin: 8px 0;
  }

  .practice-round-alert {
    font-size: 13px;
    min-height: 22px;
    margin: 6px 0;
  }

  .practice-round-alert:empty {
    min-height: 0;
    margin: 0;
  }

  .practice-correct-answer {
    padding: 8px;
    font-size: 16px;
  }

  .practice-correct-answer .morse-pattern {
    font-size: 14px;
  }

  .practice-round-panel:has([data-round-key]) .practice-response {
    display: none;
  }

  body[data-training-active='true'] .practice-round-heading h2 {
    display: none;
  }

  body[data-practice-round='true'] .receiver,
  body[data-practice-copy='true'] .receiver {
    overflow: visible;
  }

  body[data-practice-round='true'] .receiver-actions,
  body[data-practice-copy='true'] .receiver-actions {
    position: sticky;
    bottom: 0;
    z-index: 20;
    flex-wrap: wrap;
    min-height: 52px;
    padding: 6px 10px;
    border-radius: 0 0 var(--radius) var(--radius);
    background: var(--card);
  }

  body[data-practice-round='true'] .receiver-actions .button,
  body[data-practice-copy='true'] .receiver-actions .button {
    min-height: 40px;
  }

  body[data-practice-copy='true']:not([data-practice-reviewed='true']) .answer-pane {
    display: none;
  }

  body[data-practice-copy='true'] .writing-columns {
    min-height: 0;
    grid-template-columns: minmax(0, 1fr);
  }

  body[data-practice-copy='true'] .app-shell {
    position: fixed;
    top: var(--app-top, 0px);
    right: 0;
    left: 0;
    height: var(--app-height, 100dvh);
    min-height: 0;
    overflow: hidden;
  }

  body[data-practice-copy='true'] .main-content {
    display: flex;
    flex: 1;
    flex-direction: column;
    min-height: 0;
    overflow-y: auto;
  }

  body[data-practice-copy='true'] .receiver {
    flex: 0 0 auto;
  }

  body[data-practice-copy='true'] .writing-pane {
    padding: 12px;
    border-right: 0;
  }

  body[data-practice-copy='true'] .pane-heading > span {
    display: none;
  }

  body[data-practice-copy='true'] .pane-heading {
    margin-bottom: 8px;
  }

  body[data-practice-copy='true'] .practice-textarea {
    min-height: 150px;
    padding: 10px;
    font-size: 16px;
  }

  body.keyboard-open[data-practice-copy='true'] #setup-panel,
  body.keyboard-open[data-practice-copy='true'] .mobile-audio-access,
  body.keyboard-open[data-practice-copy='true'] .practice-audio-bar {
    display: none;
  }

  body.keyboard-open[data-practice-copy='true'] .practice-textarea {
    min-height: 90px;
    height: 110px;
  }

  #characters-panel .character-reference-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
  }

  #characters-panel .character-reference {
    min-height: 76px;
    padding: 10px 4px;
  }

  #characters-panel .reference-letter {
    font-size: 24px;
  }

  #characters-panel .reference-morse {
    font-size: 13px;
    letter-spacing: 1px;
  }

  #characters-panel .reference-keyboard {
    display: flex;
    flex-direction: column;
    gap: 6px;
    width: 100%;
    max-width: 560px;
    margin: 0 auto;
  }

  #characters-panel .reference-keyboard-row {
    display: flex;
    justify-content: center;
    gap: 2px;
    min-width: 0;
  }

  #characters-panel .reference-keyboard-row:nth-child(3) {
    padding: 0 14px;
  }

  #characters-panel .reference-keyboard-row:nth-child(4) {
    padding: 0 35px;
  }

  #characters-panel .reference-keyboard .character-reference {
    display: flex;
    flex: 1;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 8px;
    min-width: 0;
    max-width: 48px;
    min-height: 64px;
    padding: 8px 0;
    border: 1px solid var(--line);
    border-radius: 7px;
    background: var(--paper);
    color: var(--ink);
    touch-action: manipulation;
  }

  #characters-panel .reference-keyboard .reference-letter {
    font-family: inherit;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.25;
  }

  #characters-panel .reference-keyboard .reference-morse {
    max-width: 100%;
    color: var(--green);
    font-size: clamp(8px, 2.4vw, 9px);
    letter-spacing: 0;
    line-height: 1.25;
    white-space: nowrap;
  }

  .mobile-keyboard.qwerty-keyboard {
    gap: 5px;
    margin: 10px auto;
  }

  .qwerty-row {
    gap: 3px;
  }

  .qwerty-row .mobile-key {
    min-height: 43px;
    font-size: 15px;
  }
}

@media (min-width: 560px) and (max-width: 760px) and (max-height: 500px) {
  body[data-training-active='true'] .mobile-audio-access {
    display: none;
  }

  body[data-practice-round='true'] .practice-round-panel {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: 4px 16px;
    padding: 8px 12px;
  }

  body[data-practice-round='true'] .practice-round-heading {
    display: none;
  }

  body[data-practice-round='true'] .practice-target {
    grid-column: 1;
    grid-row: 1;
    margin: 0;
    font-size: 28px;
  }

  body[data-practice-round='true'] #practice-morse-entry {
    grid-column: 1;
    grid-row: 2;
    margin: 0;
    height: 52px;
    min-height: 52px;
  }

  body[data-practice-round='true'] .practice-morse-help {
    grid-column: 1;
    grid-row: 3;
    margin: 0;
    font-size: 11px;
  }

  body[data-practice-round='true'] .practice-morse-paddles {
    grid-column: 2;
    grid-row: 1 / 3;
    margin: 0;
    gap: 16px;
  }

  body[data-practice-round='true'] .practice-round-tools {
    grid-column: 2;
    grid-row: 3;
  }

  body[data-practice-round='true'] .practice-round-alert {
    grid-column: 2;
    grid-row: 4;
    margin: 0;
    font-size: 12px;
  }

  body[data-practice-round='true'] .practice-correct-answer {
    grid-column: 1;
    grid-row: 4;
    padding: 4px;
    font-size: 14px;
  }

  body[data-practice-round='true'] .practice-correct-answer .morse-pattern {
    font-size: 12px;
    letter-spacing: 1px;
  }

  body[data-practice-round='true'] .practice-round-panel:has([data-round-key]) {
    grid-template-columns: minmax(0, 1fr) 180px;
  }

  body[data-practice-round='true'] .practice-round-panel:has([data-round-key]) .qwerty-keyboard {
    grid-column: 1;
    grid-row: 1 / 5;
    margin: 0;
  }

  body[data-practice-round='true'] .practice-round-panel:has([data-round-key]) .practice-round-tools {
    grid-column: 2;
    grid-row: 1;
  }

  body[data-practice-round='true'] .practice-round-panel:has([data-round-key]) .practice-round-alert {
    grid-column: 2;
    grid-row: 2;
  }

  body[data-practice-round='true'] .practice-round-panel:has([data-round-key]) .practice-correct-answer {
    grid-column: 2;
    grid-row: 3;
  }

  body[data-training-active='true'] .qwerty-row .mobile-key {
    min-height: 34px;
    padding: 4px 0;
    font-size: 14px;
  }

  body[data-mode='learn'][data-training-active='true'] .mobile-training {
    display: grid;
    grid-template-columns: 180px minmax(0, 1fr);
    align-items: center;
    column-gap: 14px;
    padding: 8px 12px;
  }

  body[data-mode='learn'][data-training-active='true'] .mobile-training .qwerty-keyboard {
    grid-column: 2;
    grid-row: 1 / 5;
    margin: 0;
  }

  body[data-mode='learn'][data-training-active='true'] .mobile-training-status,
  body[data-mode='learn'][data-training-active='true'] .mobile-entry-row,
  body[data-mode='learn'][data-training-active='true'] .mobile-training-copy,
  body[data-mode='learn'][data-training-active='true'] .mobile-training-feedback {
    grid-column: 1;
    margin: 3px 0;
  }

  body[data-mode='learn'][data-training-active='true'] .mobile-training-feedback {
    font-size: 10px;
    line-height: 1.3;
  }
}

@media (max-width: 350px) {
  html[data-theme='dark'] .app-shell > .topbar .page-title {
    font-size: 12.5px;
    letter-spacing: -.65px;
    white-space: nowrap;
  }
}