/* N-back Trainer: eigen trainerlaag bovenop shared.css en game-tokens.css. */
:root {
  --accent: #7dd3fc;
  --accent-hover: #a5e4ff;
  --accent-soft: #1b3443;
  --trainer-button-text: #0f2330;
}

body.nback-theme {
  --trainer-bg-glow-color: rgba(35, 87, 112, .58);
}

body.nback-theme.training-intro-page,
body.nback-theme.training-play-page {
  --trainer-bg-glow-x: 15%;
}

body.nback-theme.game-page {
  --trainer-bg-glow-x: 85%;
  --trainer-bg-glow-size-mobile: 25rem;
  --trainer-bg-glow-size-game-desktop: 40rem;
}

body.nback-theme .theory-page {
  width: min(100%, 860px);
  margin: 0 auto;
  padding: clamp(32px, 6vw, 76px) 0;
}

body.nback-theme .theory-page h1 {
  margin: 0 0 22px;
  color: var(--text, #fff);
  font-size: clamp(42px, 8vw, 74px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0;
}

body.nback-theme .theory-page h2 {
  margin: 34px 0 10px;
  color: var(--text, #fff);
  font-size: 28px;
  font-weight: 600;
}

body.nback-theme .theory-page p {
  max-width: 720px;
  color: var(--muted, #aeb5c1);
  font-size: 18px;
  line-height: 1.65;
}

body.nback-theme .nback-settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 12px;
  width: min(100%, 520px);
  margin: 0 auto var(--space-card-padding);
  text-align: left;
}

body.nback-theme .nback-settings-grid label {
  color: var(--muted, #aeb5c1);
  font-size: 13px;
  font-weight: 700;
}

body.nback-theme .nback-settings-grid select {
  min-height: var(--touch-target, 48px);
  padding: 0 14px;
  border: 1px solid var(--line, #303642);
  border-radius: 8px;
  background: var(--trainer-key-bg, #171a20);
  color: var(--text, #fff);
  font: inherit;
}

body.nback-theme .nback-stage {
  display: grid;
  grid-template-rows: auto minmax(150px, 1fr) 26px 38px var(--touch-target);
  gap: var(--space-keypad-gap);
  width: 100%;
  min-height: 0;
  align-content: start;
  text-align: center;
}

body.nback-theme .nback-card {
  width: min(100%, 420px);
  min-height: clamp(150px, 32vw, 260px);
  margin: 0 auto;
  display: grid;
  place-items: center;
  border: 1px solid var(--line, #303642);
  border-radius: var(--trainer-radius-xl, 16px);
  background: linear-gradient(145deg, #202530, #171a20);
  color: var(--text, #fff);
  font-size: clamp(72px, 22vw, 148px);
  font-weight: 700;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  box-shadow: inset 0 1px rgba(255, 255, 255, .03);
}

body.nback-theme .nback-card.is-waiting {
  color: var(--muted, #aeb5c1);
  font-size: clamp(28px, 9vw, 48px);
}

body.nback-theme .nback-history {
  min-height: 26px;
  margin: 0;
  color: var(--muted, #aeb5c1);
  font-size: 14px;
}

body.nback-theme .nback-feedback {
  min-height: 38px;
  margin: 0;
  align-items: center;
}

body.nback-theme .nback-feedback:empty {
  visibility: hidden;
}

body.nback-theme .nback-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-keypad-gap);
  min-height: var(--touch-target);
}

body.nback-theme .nback-actions button {
  width: 100%;
  min-width: 0;
}

body.nback-theme .nback-actions #next {
  grid-column: 1 / -1;
}

body.nback-theme .nback-actions #next:not(.is-visible),
body.nback-theme .nback-actions .choice-hidden {
  display: none;
}

body.nback-theme .nback-pause {
  display: grid;
  grid-row: 2;
  width: min(100%, 420px);
  min-height: clamp(150px, 32vw, 260px);
  margin: 0 auto;
  place-content: center;
  gap: var(--space-keypad-gap);
  border: 1px solid var(--line, #303642);
  border-radius: var(--trainer-radius-xl, 16px);
  background: var(--trainer-card-bg, #171a20);
  color: var(--muted, #aeb5c1);
  font-size: var(--font-size-body, 18px);
}

body.nback-theme .nback-pause strong {
  color: var(--text, #fff);
  font-size: var(--font-size-result, 32px);
}

body.nback-theme.is-game-paused .nback-game-stage .nback-card,
body.nback-theme.is-game-paused .nback-game-stage .nback-history,
body.nback-theme.is-game-paused .nback-game-stage .nback-feedback,
body.nback-theme.is-game-paused .nback-game-stage .nback-actions {
  display: none;
}

@media (max-width: 767px) {
  body.nback-theme .nback-settings-grid {
    grid-template-columns: 1fr;
  }

  body.nback-theme.is-training-playing .training-game-main {
    min-height: var(--mobile-standard-work-area-height);
    padding-top: 0;
    padding-bottom: var(--space-play-main-compact);
  }

  body.nback-theme .nback-stage {
    grid-template-rows: auto 172px 26px 38px var(--touch-target);
  }

  body.nback-theme .nback-card,
  body.nback-theme .nback-pause {
    width: min(100%, 318px);
    min-height: 172px;
  }
}

@media (max-width: 360px) {
  body.nback-theme .nback-card,
  body.nback-theme .nback-pause {
    width: min(100%, 306px);
  }
}