/**
 * Калькулятор обыкновенных дробей.
 * Палитра и размеры — как в прототипе, все селекторы под .app--fraction-calc.
 */

.app--fraction-calc {
  --frac-blue: #1455d9;
  --frac-blue-dark: #17358f;
  --frac-blue-soft: #eef5ff;
  --frac-blue-line: #cfe0fb;
  --frac-blue-line-strong: #9fc6ff;
  --frac-ink: #17213a;
  --frac-muted: #71809b;
  --frac-green: #159b72;
  --frac-green-soft: #eaf8f3;
  --frac-orange-soft: #fff8e6;
  --frac-orange-line: #fbd888;
  --frac-page: #eef3f8;
  --frac-paper: #fbfdff;
  --frac-grid: #e5eef9;
  --frac-preview: #eaf4ff;
  --frac-rose: #e11d48;
  --frac-radius-sm: 10px;
  --frac-radius-md: 16px;
  --frac-font-hand: inherit;
  max-width: none;
  margin: 0 auto;
  padding: 0 0 8px;
  box-sizing: border-box;
  color: var(--frac-ink);
  font-weight: 400;
}

.app--fraction-calc p {
  max-width: none;
}

.app--fraction-calc h1,
.app--fraction-calc h2,
.app--fraction-calc h3 {
  font-family: inherit;
}

.app--fraction-calc [hidden] {
  display: none !important;
}

.app--fraction-calc .visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.app--fraction-calc .frac-workspace-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 48px;
  margin: 0 0 12px;
  padding: 0 max(12px, calc((100% - 1240px) / 2 + 16px));
  background: #fff;
  border-bottom: 1px solid #dbe3ed;
  box-shadow: 0 1px 2px rgba(23, 33, 58, 0.04);
}

.app--fraction-calc .frac-workspace-head__title {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.app--fraction-calc .frac-logo {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 8px;
  background: var(--frac-blue);
  color: #fff;
  font-size: 14px;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.app--fraction-calc .frac-workspace-head h1 {
  margin: 0;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.2;
  color: var(--frac-ink);
}

.app--fraction-calc .frac-workspace-head__hint {
  font-size: 11px;
  color: var(--frac-muted);
  white-space: nowrap;
}

.app--fraction-calc .frac-toolbar {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  flex-shrink: 0;
}

.app--fraction-calc .frac-toolbar__link,
.app--fraction-calc .frac-toolbar__btn,
.app--fraction-calc .frac-chip {
  font: inherit;
  font-size: 11px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--frac-blue-dark);
  background: var(--frac-paper);
  border: 1px solid var(--frac-blue-line);
  border-radius: 8px;
  padding: 5px 10px;
  cursor: pointer;
  text-decoration: none;
}

.app--fraction-calc .frac-toolbar__btn {
  background: var(--frac-blue-soft);
  color: var(--frac-blue);
  border-color: var(--frac-blue-line-strong);
}

.app--fraction-calc .frac-chip:hover,
.app--fraction-calc .frac-toolbar__link:hover,
.app--fraction-calc .frac-toolbar__btn:hover {
  background: var(--frac-blue-soft);
}

.app--fraction-calc .frac-chip.is-copied {
  color: #047857;
}

.app--fraction-calc .frac-copy-short {
  display: none;
}

.app--fraction-calc .frac-chip.is-copied .frac-copy-full,
.app--fraction-calc .frac-chip.is-copied .frac-copy-short {
  display: none;
}

.app--fraction-calc .frac-chip.is-copied::after {
  content: 'Скопировано!';
}

.app--fraction-calc .frac-chip--danger {
  color: var(--frac-rose);
}

.app--fraction-calc .frac-layout {
  display: grid;
  gap: 12px;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 12px;
}

.app--fraction-calc .frac-main {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.app--fraction-calc .frac-card,
.app--fraction-calc .frac-steps-panel {
  background: #fff;
  border: 1px solid var(--frac-blue-line);
  border-radius: var(--frac-radius-md);
  box-shadow: 0 1px 2px rgba(23, 33, 58, 0.04);
}

.app--fraction-calc .frac-card {
  padding: 12px 14px;
}

.app--fraction-calc .frac-card__head,
.app--fraction-calc .frac-steps-panel__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.app--fraction-calc .frac-card__head {
  margin-bottom: 8px;
}

.app--fraction-calc .frac-steps-panel__head .frac-chip {
  margin-left: auto;
}

.app--fraction-calc .frac-card__title,
.app--fraction-calc .frac-steps-panel__head h2,
.app--fraction-calc .frac-answers__title {
  margin: 0;
  font-size: 14px;
  font-weight: 800;
  color: var(--frac-ink);
}

.app--fraction-calc .frac-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-left: auto;
}

.app--fraction-calc .frac-toggle input {
  width: 12px;
  height: 12px;
  accent-color: var(--frac-blue);
}

.app--fraction-calc .frac-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border: 1px solid var(--frac-blue-line);
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
  color: var(--frac-muted);
  background: var(--frac-paper);
  cursor: pointer;
}

.app--fraction-calc .frac-toggle:has(input:checked) {
  color: var(--frac-blue);
  background: var(--frac-blue-soft);
  border-color: var(--frac-blue-line-strong);
}

.app--fraction-calc .frac-negative-hint {
  flex: 1 1 100%;
  margin: 0;
  padding: 6px 10px;
  font-size: 11px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--frac-blue-dark);
  background: var(--frac-blue-soft);
  border: 1px solid var(--frac-blue-line);
  border-radius: 8px;
}

.app--fraction-calc .frac-equation,
.app--fraction-calc .frac-equation__expr,
.app--fraction-calc .frac-equation__result {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: center;
}

.app--fraction-calc .frac-equation {
  flex-wrap: wrap;
  gap: 10px 12px;
  overflow-x: auto;
  padding: 4px 0;
}

.app--fraction-calc .frac-equation__expr,
.app--fraction-calc .frac-equation__result {
  gap: 8px;
}

.app--fraction-calc .frac-box {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 6px 8px;
  border: 1px solid var(--frac-blue-line);
  border-radius: 14px;
  background: #fff;
  min-width: 0;
  min-inline-size: auto;
}

.app--fraction-calc .frac-box:hover,
.app--fraction-calc .frac-box:focus-within {
  border-color: var(--frac-blue-line-strong);
}

.app--fraction-calc .frac-box__row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.app--fraction-calc .frac-sign {
  flex-shrink: 0;
  width: 28px;
  height: 64px;
  padding: 0;
  border-radius: var(--frac-radius-sm);
  border: 1px solid var(--frac-blue-line);
  background: var(--frac-paper);
  color: var(--frac-muted);
  font-size: 22px;
  font-weight: 500;
  line-height: 1;
  cursor: pointer;
}

.app--fraction-calc .frac-sign:hover {
  color: var(--frac-muted);
  border-color: var(--frac-blue-line-strong);
  background: var(--frac-paper);
}

.app--fraction-calc .frac-sign[aria-pressed='true'] {
  color: var(--frac-rose);
  font-weight: 800;
  border-color: #fecdd3;
  background: #fff;
  box-shadow: none;
}

.app--fraction-calc .frac-cell {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.app--fraction-calc .frac-cell__pad {
  width: 50px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--frac-paper);
  border: 1px solid var(--frac-blue-line);
  border-radius: var(--frac-radius-sm);
  padding: 2px;
}

.app--fraction-calc .frac-cell__pad:focus-within {
  border-color: var(--frac-blue);
  box-shadow: 0 0 0 3px var(--frac-blue-soft);
}

.app--fraction-calc .frac-cell__pad--stack {
  flex-direction: column;
  justify-content: space-between;
  padding: 4px;
}

.app--fraction-calc .frac-cell input {
  width: 100%;
  border: 0;
  background: transparent;
  outline: none;
  text-align: center;
  font: inherit;
  font-size: 18px;
  font-weight: 800;
  color: var(--frac-blue-dark);
  min-width: 0;
}

.app--fraction-calc .frac-cell__pad--stack input {
  font-size: 16px;
  line-height: 1;
}

.app--fraction-calc .frac-cell input::placeholder {
  color: #cbd5e1;
  font-weight: 500;
  font-size: 12px;
}

.app--fraction-calc .frac-cell__pad--stack input::placeholder {
  font-size: 14px;
}

.app--fraction-calc .frac-cell__bar {
  width: 100%;
  height: 2.5px;
  background: var(--frac-blue);
  border-radius: 999px;
  flex-shrink: 0;
}

.app--fraction-calc .frac-cell__caption {
  margin-top: 2px;
  font-size: 10px;
  font-weight: 500;
  color: var(--frac-muted);
}

.app--fraction-calc .frac-box.is-den-zero .frac-cell__caption[data-frac-den-label],
.app--fraction-calc .frac-box.is-den-zero .frac-cell__pad--stack input:last-of-type {
  color: var(--frac-rose);
  font-weight: 800;
}

.app--fraction-calc .frac-box.is-negative {
  border-color: var(--frac-blue-line);
}

.app--fraction-calc .frac-ops {
  display: grid;
  grid-template-columns: 27px 27px;
  width: 54px;
  height: 54px;
  border: 1px solid var(--frac-blue-line);
  border-radius: var(--frac-radius-sm);
  overflow: hidden;
  flex-shrink: 0;
}

.app--fraction-calc .frac-op {
  width: 27px;
  height: 27px;
  border: 0;
  background: #fff;
  color: var(--frac-blue-dark);
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
}

.app--fraction-calc .frac-op:hover {
  background: var(--frac-blue-soft);
}

.app--fraction-calc .frac-op.is-active {
  background: var(--frac-blue);
  color: #fff;
}

.app--fraction-calc .frac-equals {
  font-size: 24px;
  font-weight: 800;
  color: var(--frac-ink);
  flex-shrink: 0;
}

.app--fraction-calc .frac-preview {
  width: 84px;
  min-height: 64px;
  padding: 4px;
  border-radius: 12px;
  background: var(--frac-preview);
  border: 1px solid var(--frac-blue-line-strong);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.app--fraction-calc .frac-preview-error {
  font-size: 11px;
  font-weight: 800;
  color: var(--frac-rose);
}

.app--fraction-calc .frac-preview__label {
  font-size: 10px;
  font-weight: 800;
  color: var(--frac-blue);
  letter-spacing: 0.04em;
  margin-top: 2px;
}

.app--fraction-calc .frac-error {
  margin: 8px 0 0;
  color: var(--frac-rose);
  font-size: 13px;
  font-weight: 700;
}

.app--fraction-calc .frac-notebook,
.app--fraction-calc .frac-steps {
  background-color: var(--frac-paper);
  background-image:
    linear-gradient(var(--frac-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--frac-grid) 1px, transparent 1px);
  background-size: 26px 26px;
}

.app--fraction-calc .frac-notebook {
  min-height: 64px;
  padding: 10px;
  border: 1px solid var(--frac-blue-line);
  border-radius: var(--frac-radius-sm);
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 2px;
  overflow-x: auto;
}

.app--fraction-calc .frac-notebook-error {
  font-size: 13px;
  font-weight: 800;
  color: var(--frac-rose);
}

.app--fraction-calc .frac-answers {
  background: var(--frac-blue-dark);
  color: #fff;
  border-radius: var(--frac-radius-md);
  padding: 12px 14px;
}

.app--fraction-calc .frac-answers__title {
  color: #fff;
  margin-bottom: 8px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 13px;
}

.app--fraction-calc .frac-answers__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.app--fraction-calc .frac-answer-card {
  background: #fff;
  color: var(--frac-ink);
  border-radius: var(--frac-radius-sm);
  padding: 8px;
  min-height: 68px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 4px;
}

.app--fraction-calc .frac-answer-card span {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--frac-muted);
}

.app--fraction-calc .frac-answer-card--soft {
  background: var(--frac-green-soft);
  border: 1px solid #a3e5ce;
}

.app--fraction-calc .frac-answer-card--soft span {
  color: var(--frac-green);
}

.app--fraction-calc .frac-answer-card--warm {
  background: var(--frac-orange-soft);
  border: 1px solid var(--frac-orange-line);
}

.app--fraction-calc .frac-answer-card--warm span {
  color: #b8860b;
}

.app--fraction-calc .frac-decimal {
  font-size: 20px;
  font-weight: 800;
  color: var(--frac-ink);
}

.app--fraction-calc .frac-steps-panel {
  display: flex;
  flex-direction: column;
  min-height: 300px;
  overflow: hidden;
}

.app--fraction-calc .frac-steps-panel__head {
  margin: 0;
  padding: 10px 14px;
  border-bottom: 1px solid var(--frac-blue-line);
  background: var(--frac-paper);
}

.app--fraction-calc .frac-step-count {
  font-size: 11px;
  font-weight: 700;
  color: var(--frac-blue);
  background: var(--frac-blue-soft);
  border: 1px solid var(--frac-blue-line-strong);
  border-radius: 999px;
  padding: 2px 8px;
}

.app--fraction-calc .frac-steps {
  flex: 1;
  overflow: auto;
  padding: 12px 14px;
  max-height: 28rem;
}

.app--fraction-calc .frac-step + .frac-step {
  margin-top: 10px;
}

.app--fraction-calc .frac-step {
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 12px;
}

.app--fraction-calc .frac-step.is-error {
  background: #fff1f2;
  border-color: #fecdd3;
  color: #9f1239;
  text-align: center;
}

.app--fraction-calc .frac-step__top {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.app--fraction-calc .frac-step__num {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  border-radius: 6px;
  background: #1d4ed8;
  color: #fff;
  font-size: 11px;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.app--fraction-calc .frac-step h3 {
  margin: 0;
  flex: 1;
  min-width: 0;
  font-size: 13px;
  font-weight: 800;
  color: var(--frac-ink);
}

.app--fraction-calc .frac-step__body {
  padding-left: 28px;
}

.app--fraction-calc .frac-step p {
  margin: 0;
  font-size: 13px;
  line-height: 1.55;
  color: #334155;
}

.app--fraction-calc .frac-step__badge {
  display: inline-block;
  flex-shrink: 0;
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-radius: 999px;
  border: 1px solid transparent;
  padding: 2px 8px;
}

.app--fraction-calc .frac-step__badge--перевод {
  background: #fef3c7;
  color: #92400e;
  border-color: #fde68a;
}

.app--fraction-calc .frac-step__badge--знаменатель {
  background: #dbeafe;
  color: #1e40af;
  border-color: #bfdbfe;
}

.app--fraction-calc .frac-step__badge--действие {
  background: #e0e7ff;
  color: #3730a3;
  border-color: #c7d2fe;
}

.app--fraction-calc .frac-step__badge--умножение {
  background: #ccfbf1;
  color: #115e59;
  border-color: #99f6e4;
}

.app--fraction-calc .frac-step__badge--деление {
  background: #f3e8ff;
  color: #6b21a8;
  border-color: #e9d5ff;
}

.app--fraction-calc .frac-step__badge--сокращение {
  background: #d1fae5;
  color: #065f46;
  border-color: #a7f3d0;
}

.app--fraction-calc .frac-step__badge--ответ {
  background: #ede9fe;
  color: #5b21b6;
  border-color: #ddd6fe;
}

.app--fraction-calc .frac-step__tip {
  margin-top: 8px !important;
  display: flex;
  align-items: flex-start;
  gap: 6px;
  padding: 8px;
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: 8px;
  color: #78350f !important;
  font-size: 11px !important;
  line-height: 1.45;
}

.app--fraction-calc .frac-visual {
  margin-top: 10px;
  padding: 10px;
  background: rgba(239, 246, 255, 0.55);
  border: 1px solid #dbeafe;
  border-radius: 8px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.app--fraction-calc .frac-visual__pair {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.app--fraction-calc .frac-visual__note {
  font-size: 11px;
  color: var(--frac-muted);
}

.app--fraction-calc .frac-visual__invert {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 6px;
  background: var(--frac-green-soft);
  border: 1px solid #a3e5ce;
  border-radius: 6px;
}

.app--fraction-calc .frac-visual__invert span {
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--frac-green);
}

.app--fraction-calc .frac-arrow {
  color: #94a3b8;
  font-weight: 800;
}

.app--fraction-calc .frac-view {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  position: relative;
  font-family: var(--frac-font-hand);
  font-weight: 800;
  font-style: normal;
  line-height: 1;
  color: #172554;
  vertical-align: middle;
}

.app--fraction-calc .frac-view--xs {
  font-size: 14px;
}

.app--fraction-calc .frac-view--sm {
  font-size: 16px;
}

.app--fraction-calc .frac-view--emerald,
.app--fraction-calc .frac-view--emerald .frac-whole,
.app--fraction-calc .frac-view--emerald .frac-num,
.app--fraction-calc .frac-view--emerald .frac-den {
  color: #065f46;
}

.app--fraction-calc .frac-view--emerald .frac-bar {
  background: #047857;
}

.app--fraction-calc .frac-sign-view,
.app--fraction-calc .frac-whole {
  margin-right: 2px;
  font-size: 1.15em;
}

.app--fraction-calc .frac-stack-view {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  min-width: 14px;
}

.app--fraction-calc .frac-factor {
  position: absolute;
  top: -12px;
  right: -10px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 9px;
  font-weight: 800;
  color: #065f46;
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  border-radius: 4px;
  padding: 0 3px;
}

.app--fraction-calc .frac-num,
.app--fraction-calc .frac-den {
  font-size: 0.85em;
  line-height: 1.1;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.app--fraction-calc .frac-cancel-old {
  text-decoration: line-through;
  text-decoration-color: #f43f5e;
  text-decoration-thickness: 2px;
  opacity: 0.5;
}

.app--fraction-calc .frac-cancel-new {
  font-size: 9px;
  font-weight: 800;
  color: #059669;
}

.app--fraction-calc .frac-bar {
  width: 100%;
  min-width: 14px;
  height: 1.5px;
  background: #1e3a8a;
  border-radius: 999px;
  margin: 1px 0;
}

.app--fraction-calc .frac-eq {
  margin: 0 4px;
  font-family: inherit;
  font-weight: 800;
  font-style: normal;
  color: #172554;
  font-size: 18px;
}

.app--fraction-calc .frac-step p,
.app--fraction-calc .frac-step h3,
.app--fraction-calc .frac-rules {
  font-style: normal;
}

.app--fraction-calc .frac-dialog {
  /* reset * { margin: 0 } ломает центрирование нативного dialog */
  margin: auto;
  max-width: 40rem;
  width: min(40rem, calc(100vw - 2rem));
  max-height: min(calc(100dvh - 2rem), 90vh);
  border: 1px solid #e2e8f0;
  border-radius: 24px;
  padding: 0;
  color: var(--frac-ink);
  background: #fff;
  overflow: hidden;
  box-shadow: 0 24px 48px rgba(15, 23, 42, 0.18);
}

.app--fraction-calc .frac-dialog[open] {
  display: flex;
  flex-direction: column;
}

.app--fraction-calc .frac-dialog form {
  display: flex;
  flex-direction: column;
  min-height: 0;
  max-height: min(calc(100dvh - 2rem), 90vh);
}

.app--fraction-calc .frac-dialog::backdrop {
  background: rgba(15, 23, 42, 0.55);
}

.app--fraction-calc .frac-dialog__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 20px 24px;
  border-bottom: 1px solid #f1f5f9;
  background: #f8fafc;
  flex-shrink: 0;
}

.app--fraction-calc .frac-dialog__head h2 {
  margin: 0 0 4px;
  font-size: 18px;
}

.app--fraction-calc .frac-dialog__head p {
  margin: 0;
  font-size: 12px;
  color: var(--frac-muted);
}

.app--fraction-calc .frac-rules {
  margin: 0;
  padding: 20px 24px 24px 2.2rem;
  line-height: 1.5;
  font-size: 14px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.app--fraction-calc .frac-rules li + li {
  margin-top: 14px;
}

.app--fraction-calc .frac-rules li {
  line-height: 1.65;
}

.app--fraction-calc .frac-rules .frac-view {
  vertical-align: middle;
  margin: 0 2px;
}

.app--fraction-calc .frac-rules .frac-eq {
  font-size: 14px;
  margin: 0 3px;
  vertical-align: middle;
}

.app--fraction-calc .frac-rules__example {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2px 4px;
  margin-top: 4px;
  vertical-align: middle;
}

.fraction-calc-band {
  background: #eef3f8;
  padding: 0 0 20px;
}

@media (min-width: 768px) {
  .app--fraction-calc .frac-layout {
    padding: 0 16px;
    grid-template-columns: minmax(0, 7fr) minmax(18rem, 5fr);
    align-items: stretch;
    gap: 16px;
    min-height: min(760px, calc(100vh - 160px));
  }

  .app--fraction-calc .frac-main {
    gap: 10px;
  }

  .app--fraction-calc .frac-card,
  .app--fraction-calc .frac-answers {
    padding: 16px 18px;
  }

  .app--fraction-calc .frac-equation {
    flex-wrap: nowrap;
    gap: 14px;
  }

  .app--fraction-calc .frac-equation__expr,
  .app--fraction-calc .frac-equation__result {
    gap: 12px;
  }

  .app--fraction-calc .frac-steps-panel {
    min-height: 100%;
  }

  .app--fraction-calc .frac-steps {
    max-height: none;
  }
}

@media (max-width: 767px) {
  .app--fraction-calc .frac-workspace-head {
    flex-wrap: wrap;
    min-height: 0;
    padding: 8px 12px;
    gap: 8px;
  }

  .app--fraction-calc .frac-workspace-head__hint {
    display: none;
  }

  .app--fraction-calc .frac-workspace-head h1 {
    font-size: 14px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .app--fraction-calc .frac-toolbar {
    width: 100%;
    justify-content: flex-start;
  }

  .app--fraction-calc .frac-card__head {
    gap: 6px;
  }

  .app--fraction-calc .frac-actions {
    margin-left: 0;
    width: 100%;
  }

  .app--fraction-calc .frac-copy-full {
    display: none;
  }

  .app--fraction-calc .frac-copy-short {
    display: inline;
  }

  .app--fraction-calc .frac-steps-panel__head .frac-chip {
    display: none;
  }
}

@media (max-width: 640px) {
  .app--fraction-calc .frac-layout {
    padding: 0 8px;
  }

  .app--fraction-calc .frac-card,
  .app--fraction-calc .frac-answers {
    padding: 10px;
  }

  .app--fraction-calc .frac-cell__pad {
    width: 40px;
    height: 52px;
  }

  .app--fraction-calc .frac-sign {
    width: 24px;
    height: 52px;
    font-size: 20px;
  }

  .app--fraction-calc .frac-box {
    padding: 4px 6px;
    gap: 4px;
  }

  .app--fraction-calc .frac-box__row {
    gap: 4px;
  }

  .app--fraction-calc .frac-ops {
    width: 48px;
    height: 48px;
    grid-template-columns: 24px 24px;
  }

  .app--fraction-calc .frac-op {
    width: 24px;
    height: 24px;
    font-size: 15px;
  }

  .app--fraction-calc .frac-equals {
    font-size: 20px;
  }

  .app--fraction-calc .frac-preview {
    width: 64px;
    min-height: 52px;
  }

  .app--fraction-calc .frac-answers__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 6px;
  }

  .app--fraction-calc .frac-answer-card {
    min-height: 58px;
    padding: 6px 4px;
  }

  .app--fraction-calc .frac-answer-card span {
    font-size: 8px;
  }

  .app--fraction-calc .frac-decimal {
    font-size: 16px;
  }

  .app--fraction-calc .frac-cell input {
    font-size: 16px;
  }

  .app--fraction-calc .frac-step__body {
    padding-left: 0;
  }

  .app--fraction-calc .frac-step__top {
    flex-wrap: wrap;
  }
}

@media print {
  .site-nav,
  .site-footer,
  .frac-toolbar,
  .page-topic-seo-after-app,
  .site-main--crumbs-bar {
    display: none !important;
  }
}