:root {
  --bg-start: #edf6ff;
  --bg-end: #f9f7ef;
  --card-bg: #ffffff;
  --text: #17233a;
  --muted: #51607b;
  --accent: #ff7a00;
  --accent-hover: #e56d00;
  --border: #d8dfec;
  --success: #186d2f;
  --error: #8b1c1c;
}

* {
  box-sizing: border-box;
}

.times-table-page {
  margin: 1rem auto 0;
  width: min(100%, 34rem);
  font-family: "Nunito Sans", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: transparent;
  padding: 0;
  border-radius: 0;
  box-shadow: none;
}

.times-table-page .card {
  width: 100%;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: 0 0.75rem 2rem rgba(23, 35, 58, 0.12);
}

.times-table-page h1 {
  margin: 0 0 1rem 0;
  font-size: clamp(1.4rem, 3vw, 2rem);
}

.times-table-page .controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.times-table-page label {
  font-weight: 600;
}

.times-table-page select,
.times-table-page input,
.times-table-page button {
  font: inherit;
}

.times-table-page select,
.times-table-page input {
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 0.55rem 0.7rem;
}

.times-table-page #answer {
  width: 100%;
  margin-top: 0.4rem;
}

.times-table-page #answer:focus,
.times-table-page #answer:focus-visible {
  border-color: #777777;
  outline: 2px solid #777777;
  outline-offset: 2px;
  box-shadow: none;
}

.times-table-page button {
  border: 1px solid var(--accent);
  border-radius: 999px;
  padding: 0.55rem 0.9rem;
  background: #fff;
  color: var(--accent);
  cursor: pointer;
  font-weight: 700;
  transition: background-color 120ms ease, color 120ms ease, border-color 120ms ease;
}

.times-table-page button:hover,
.times-table-page button:focus-visible {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #fff;
}

.times-table-page #next-btn {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.times-table-page #next-btn:hover,
.times-table-page #next-btn:focus-visible {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #fff;
}

.times-table-page button:focus-visible,
.times-table-page input:focus-visible,
.times-table-page select:focus-visible {
  outline: 2px solid #0b3d84;
  outline-offset: 2px;
}

.times-table-page .question {
  font-size: clamp(1.25rem, 2.4vw, 1.6rem);
  margin: 1rem 0 0.7rem 0;
  min-height: 2rem;
}

.times-table-page .button-group {
  margin-top: 0.8rem;
}

.times-table-page .keyboard {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.5rem;
}

.times-table-page .result,
.times-table-page .score {
  margin: 0.8rem 0 0 0;
}

.times-table-page .result {
  min-height: 1.5rem;
  color: var(--muted);
}

.times-table-page .result.ok {
  color: var(--success);
}

.times-table-page .result.error {
  color: var(--error);
}

.tt-modal[hidden] {
  display: none;
}

.tt-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
}

.tt-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
}

.tt-modal__dialog {
  position: relative;
  width: min(92vw, 26rem);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  padding: 1rem 1rem 0.9rem;
  box-shadow: 0 16px 30px rgba(0, 0, 0, 0.2);
}

.tt-modal__dialog h2 {
  margin: 0 0 0.45rem 0;
  color: var(--text);
  font-size: 1.2rem;
}

.tt-modal__dialog p {
  margin: 0;
}

.tt-modal__actions {
  margin-top: 0.9rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem;
}

.tt-modal__actions button {
  width: 100%;
}

@media (max-width: 400px) {
  .times-table-page {
    padding: 0.75rem;
  }

  .times-table-page .card {
    padding: 1rem;
  }
}