@import url("./styles-numeric-answer.css");

/* ============================================================
   Сложение и вычитание в пределах 1000.
   Профиль страницы: tokens-only. Все селекторы под .app--add-sub-to-1000.
   На узком экране клавиатура под примером, на широком — справа.
   ============================================================ */

.app--add-sub-to-1000 {
  --a1k-key-min: 3.5rem;
  box-sizing: border-box;
  width: min(48rem, calc(100% - 2 * var(--space-4)));
  margin: var(--space-3) auto var(--space-6);
  padding: var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--trainer-radius-card, var(--radius-2xl));
  background: var(--surface);
  box-shadow: var(--trainer-shadow-card, var(--shadow-sm));
  font-family: var(--font-body);
  color: var(--text);
}

.app--add-sub-to-1000 [hidden] {
  display: none !important;
}

.app--add-sub-to-1000 .a1k-sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.app--add-sub-to-1000 .a1k-tabs,
.app--add-sub-to-1000 .a1k-ops {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: 0 auto var(--space-4);
}

.app--add-sub-to-1000 .a1k-tab,
.app--add-sub-to-1000 .a1k-op {
  min-height: 2.75rem;
  padding: 0.35rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.2;
}

.app--add-sub-to-1000 .a1k-tab.is-active,
.app--add-sub-to-1000 .a1k-op.is-active {
  border-color: var(--primary);
  background: var(--primary);
  color: var(--text-inv);
}

.app--add-sub-to-1000 .a1k-board {
  position: relative;
  width: 100%;
  text-align: center;
}

.app--add-sub-to-1000 .a1k-layout {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

.app--add-sub-to-1000 .a1k-main {
  width: 100%;
}

.app--add-sub-to-1000 .a1k-dock {
  width: min(100%, 20rem);
}

.app--add-sub-to-1000 .a1k-line,
.app--add-sub-to-1000 .a1k-part-line,
.app--add-sub-to-1000 .a1k-level2 {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: nowrap;
  gap: 0.45rem;
  margin: 0 0 var(--space-2);
}

.app--add-sub-to-1000 .a1k-expr {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 6.4vw, 2.35rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.app--add-sub-to-1000 .a1k-part-expr,
.app--add-sub-to-1000 .a1k-now,
.app--add-sub-to-1000 .a1k-assemble,
.app--add-sub-to-1000 .a1k-note {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.2;
}

.app--add-sub-to-1000 .a1k-part-expr {
  font-size: clamp(1.15rem, 4.4vw, 1.45rem);
  white-space: nowrap;
}

.app--add-sub-to-1000 .a1k-now,
.app--add-sub-to-1000 .a1k-assemble,
.app--add-sub-to-1000 .a1k-note {
  margin: 0 0 var(--space-2);
  color: var(--text-muted);
  font-size: 1rem;
  font-weight: 700;
}

.app--add-sub-to-1000 .a1k-input {
  box-sizing: border-box;
  width: 4.4rem;
  height: 3.15rem;
  padding: 0;
  border: 3px solid var(--primary);
  border-radius: var(--radius-lg);
  background: var(--primary-bg);
  color: var(--text);
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 800;
  line-height: 1;
  text-align: center;
}

.app--add-sub-to-1000 .a1k-part-line .a1k-input,
.app--add-sub-to-1000 .a1k-level2 .a1k-input {
  width: 4rem;
  height: 2.7rem;
  font-size: 1.35rem;
}

.app--add-sub-to-1000 .a1k-input:focus {
  outline: 3px solid var(--primary);
  outline-offset: 3px;
  border-color: var(--primary-h);
}

.app--add-sub-to-1000 .a1k-input:disabled {
  opacity: 1;
  color: var(--text);
  -webkit-text-fill-color: var(--text);
}

.app--add-sub-to-1000 .a1k-input.is-bad {
  animation: a1k-answer-bad 0.6s linear both;
}

@keyframes a1k-answer-bad {
  0%,
  16%,
  46%,
  62% {
    border-color: var(--error);
    background: var(--error-bg);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--error) 28%, transparent);
    outline-color: var(--error);
  }

  30%,
  78%,
  100% {
    border-color: var(--primary);
    background: var(--primary-bg);
    box-shadow: none;
    outline-color: var(--primary);
  }
}

.app--add-sub-to-1000 .a1k-mark {
  color: var(--success);
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
}

.app--add-sub-to-1000 .a1k-suggest {
  display: inline-block;
  margin: 0.35rem 0 0;
  padding: 0.2rem 0.4rem;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.app--add-sub-to-1000 .a1k-suggest.is-strong {
  color: var(--primary);
  font-size: 1.05rem;
  font-weight: 800;
}

.app--add-sub-to-1000 .a1k-numpad {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.45rem;
}

.app--add-sub-to-1000 .a1k-key {
  min-height: var(--a1k-key-min);
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  color: var(--text);
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  touch-action: manipulation;
}

.app--add-sub-to-1000 .a1k-key:active:not(:disabled) {
  transform: scale(0.96);
}

.app--add-sub-to-1000 .a1k-key:disabled {
  opacity: 0.45;
}

.app--add-sub-to-1000 .a1k-key--ok {
  background: var(--success);
  border-color: var(--success);
  color: var(--text-inv);
}

.app--add-sub-to-1000 .a1k-key--del {
  color: var(--text-muted);
}

.app--add-sub-to-1000 .a1k-confetti {
  position: absolute;
  inset: 0;
  z-index: 3;
  overflow: hidden;
  pointer-events: none;
}

.app--add-sub-to-1000 .a1k-confetti .cp {
  position: absolute;
  top: -20px;
  border-radius: 2px;
  animation-name: a1k-confetti-fall;
  animation-timing-function: linear;
  animation-fill-mode: forwards;
}

@keyframes a1k-confetti-fall {
  to {
    transform: translateY(28rem) rotate(420deg);
    opacity: 0;
  }
}

.app--add-sub-to-1000 .a1k-summary {
  width: min(100%, 36rem);
  margin: var(--space-2) auto 0;
  padding: var(--space-4) 0 0;
  text-align: center;
}

.app--add-sub-to-1000 .a1k-summary__label {
  margin: 0 0 var(--space-3);
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
}

.app--add-sub-to-1000 .a1k-summary__actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-5);
}

.app--add-sub-to-1000 .a1k-btn {
  min-height: 3rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  color: var(--text);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 800;
}

.app--add-sub-to-1000 .a1k-btn--primary {
  border-color: var(--primary);
  background: var(--primary);
  color: var(--text-inv);
}

@media (min-width: 720px) {
  .app--add-sub-to-1000 .a1k-layout {
    flex-direction: row;
    align-items: flex-start;
    justify-content: center;
  }

  .app--add-sub-to-1000 .a1k-main {
    flex: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .app--add-sub-to-1000 .a1k-input.is-bad,
  .app--add-sub-to-1000 .a1k-confetti .cp {
    animation: none;
  }
}