/* Adunare interactivă — totul în viewport (ca numere-cards), scale pe lățime + înălțime */

@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@600;700;800;900&family=Inter:wght@600;700&display=swap');

html:has(.adun-page) {
  height: 100%;
  overflow: hidden;
}

.adun-page {
  --adun-blue: #4954e2;
  --adun-blue-deep: #3a44c9;
  --adun-lavender: #e6e8fb;
  --adun-muted: #9aa3b8;
  --adun-caption: #6b74b8;
  --adun-card-border: #b4bbf0;
  --u-base: min(1px, 100vw / 1280, 100dvh / 820);
  --fit: 1;
  --u: calc(var(--u-base) * var(--fit));
  --pad-x: max(10px, calc(24 * var(--u)));
  --exit-space: max(72px, calc(110 * var(--u)));
  --cta-h: clamp(40px, calc(56 * var(--u)), 64px);
  --next-h: clamp(40px, calc(52 * var(--u)), 60px);
  --footer-gap: max(8px, calc(16 * var(--u)));
  --footer-safe: calc(var(--next-h) + var(--footer-gap) + max(10px, calc(20 * var(--u))));

  margin: 0;
  width: 100%;
  height: 100dvh;
  max-height: 100dvh;
  overflow: hidden;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  font-family: 'Nunito', system-ui, sans-serif;
  color: var(--adun-blue);
  background:
    radial-gradient(120% 90% at 20% 0%, #fff6e8 0%, transparent 55%),
    radial-gradient(100% 80% at 90% 100%, #ebe8ff 0%, transparent 50%),
    linear-gradient(160deg, #fff9f0 0%, #f7f5ff 48%, #ebe9fb 100%);
}

.adun-page * {
  box-sizing: border-box;
}

.adun-exit {
  position: fixed;
  top: max(8px, calc(18 * var(--u)));
  left: max(8px, calc(18 * var(--u)));
  z-index: 40;
  display: inline-flex;
  align-items: center;
  gap: calc(6 * var(--u));
  padding: clamp(6px, calc(10 * var(--u)), 12px) clamp(10px, calc(14 * var(--u)), 18px);
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 2px 8px rgba(40, 50, 120, 0.08);
  border-radius: 999px;
  font-family: 'Inter', system-ui, sans-serif;
  font-weight: 600;
  font-size: clamp(12px, calc(16 * var(--u)), 16px);
  color: var(--adun-blue);
  text-decoration: none;
  border: none;
  cursor: pointer;
}

.adun-exit:hover {
  background: #fff;
}

.adun-exit__icon {
  width: clamp(14px, calc(18 * var(--u)), 18px);
  height: clamp(14px, calc(18 * var(--u)), 18px);
  flex-shrink: 0;
}

.adun-header {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(6px, calc(12 * var(--u)), 14px);
  padding:
    max(10px, calc(22 * var(--u)))
    var(--exit-space)
    0;
  min-width: 0;
}

.adun-title {
  margin: 0;
  font-weight: 800;
  font-size: clamp(16px, calc(34 * var(--u)), 36px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  text-align: center;
  color: var(--adun-blue-deep);
  max-width: 100%;
}

.adun-progress {
  display: flex;
  flex-wrap: nowrap;
  justify-content: center;
  align-items: center;
  gap: clamp(3px, calc(7 * var(--u)), 8px);
  width: 100%;
  max-width: min(640px, 100%);
  min-width: 0;
  overflow: hidden;
}

.adun-progress__pill {
  --pill: clamp(22px, calc(40 * var(--u)), 44px);
  width: var(--pill);
  height: var(--pill);
  flex: 0 0 auto;
  border: none;
  border-radius: clamp(8px, calc(12 * var(--u)), 14px);
  background: var(--adun-lavender);
  color: var(--adun-blue);
  font-family: inherit;
  font-weight: 800;
  font-size: clamp(11px, calc(16 * var(--u)), 18px);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  transition: background 0.2s ease, color 0.2s ease;
}

.adun-progress__pill.is-active {
  background: var(--adun-blue);
  color: #fff;
}

.adun-progress__star {
  width: 58%;
  height: 58%;
  color: var(--adun-blue);
}

.adun-progress__pill.is-active .adun-progress__star {
  color: #fff;
}

.adun-main {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: clamp(8px, calc(18 * var(--u)), 22px);
  padding:
    clamp(8px, calc(14 * var(--u)), 18px)
    var(--pad-x)
    var(--footer-safe);
  width: 100%;
}

.adun-card {
  width: min(920px, 100%);
  flex: 1 1 auto;
  min-height: 0;
  max-height: 100%;
  background: #fff;
  border: 2px solid var(--adun-card-border);
  border-radius: clamp(16px, calc(28 * var(--u)), 28px);
  box-shadow: 0 12px 28px -8px rgba(47, 79, 191, 0.12);
  padding: clamp(10px, calc(20 * var(--u)), 26px) clamp(12px, calc(24 * var(--u)), 28px);
  display: flex;
  flex-direction: column;
  align-items: stretch;
  overflow: hidden;
}

.adun-card__meta {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: clamp(8px, calc(12 * var(--u)), 14px);
  flex-wrap: wrap;
  min-width: 0;
}

.adun-badge {
  display: inline-flex;
  align-items: center;
  padding: clamp(5px, calc(8 * var(--u)), 10px) clamp(10px, calc(14 * var(--u)), 16px);
  border-radius: 999px;
  background: var(--adun-blue);
  color: #fff;
  font-weight: 800;
  font-size: clamp(12px, calc(17 * var(--u)), 18px);
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.adun-meta-label {
  color: var(--adun-muted);
  font-weight: 700;
  font-size: clamp(11px, calc(15 * var(--u)), 16px);
}

.adun-equation {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(6px, calc(14 * var(--u)), 18px);
  padding: clamp(6px, calc(12 * var(--u)), 16px) 0;
  overflow: hidden;
}

.adun-operand {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: clamp(4px, calc(6 * var(--u)), 8px);
  min-width: 0;
  max-width: 42%;
}

.adun-operand__visual {
  --adun-cols: 3;
  --icon: clamp(18px, calc(44 * var(--u)), 48px);
  display: grid;
  grid-template-columns: repeat(var(--adun-cols), var(--icon));
  gap: clamp(3px, calc(5 * var(--u)), 6px);
  justify-content: center;
  align-content: center;
  min-height: 0;
  max-width: 100%;
}

.adun-operand__visual--empty-digit {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: clamp(36px, calc(64 * var(--u)), 72px);
}

.adun-operand__visual .adun-icon {
  width: var(--icon);
  height: calc(var(--icon) * 1.1);
  object-fit: contain;
  animation: adun-pop 0.35s ease both;
}

.adun-operand__visual--dense {
  --icon: clamp(11px, calc(20 * var(--u)), 24px);
  gap: 2px;
}

.adun-operand__visual.adun-bravo__icons--groups,
.adun-groups-grid {
  display: grid;
  grid-template-columns: repeat(var(--groups-cols, 3), auto);
  gap: clamp(10px, calc(18 * var(--u)), 22px);
  justify-content: center;
  align-content: center;
  max-width: 100%;
  padding: clamp(2px, calc(4 * var(--u)), 6px);
}

.adun-bravo__icons--groups {
  display: grid;
  grid-template-columns: repeat(var(--groups-cols, 3), auto);
  gap: clamp(10px, calc(18 * var(--u)), 22px);
  justify-content: center;
  align-content: center;
  max-width: 100%;
}

.adun-groups-grid--compact,
.adun-bravo__icons--groups-compact {
  gap: clamp(8px, calc(14 * var(--u)), 18px);
}

.adun-group-island,
.adun-bravo__group {
  --group-cols: 2;
  display: grid;
  grid-template-columns: repeat(var(--group-cols), auto);
  gap: clamp(3px, calc(5 * var(--u)), 6px);
  padding: clamp(6px, calc(10 * var(--u)), 12px);
  border: 2px dashed var(--adun-card-border);
  border-radius: clamp(10px, calc(14 * var(--u)), 16px);
  background: #fff;
  box-shadow: 0 2px 8px rgba(47, 79, 191, 0.07);
  min-width: 0;
}

.adun-group-island .adun-icon,
.adun-bravo__group .adun-icon {
  width: clamp(14px, calc(28 * var(--u)), 32px);
  height: clamp(16px, calc(30 * var(--u)), 36px);
}

.adun-groups-grid--compact .adun-group-island .adun-icon,
.adun-bravo__icons--groups-compact .adun-bravo__group .adun-icon {
  width: clamp(11px, calc(20 * var(--u)), 24px);
  height: clamp(12px, calc(22 * var(--u)), 26px);
}

.adun-groups-grid--compact .adun-group-island,
.adun-bravo__icons--groups-compact .adun-bravo__group {
  gap: clamp(2px, calc(3 * var(--u)), 4px);
  padding: clamp(4px, calc(8 * var(--u)), 10px);
}

/* Rezultat: ecuația e doar cifre — spațiu pentru grupuri */
.adun-card.is-result .adun-equation {
  flex: 0 0 auto;
  min-height: 0;
  padding: clamp(2px, calc(6 * var(--u)), 8px) 0;
}

.adun-card.is-result .adun-feedback {
  flex: 1 1 auto;
  min-height: 0;
  justify-content: center;
  overflow: hidden;
}

.adun-card.is-result .adun-bravo {
  max-height: 100%;
  overflow: hidden;
}

.adun-empty-digit {
  font-weight: 900;
  font-size: clamp(28px, calc(58 * var(--u)), 64px);
  line-height: 1;
  color: var(--adun-blue);
}

.adun-operand__digit {
  font-weight: 900;
  font-size: clamp(24px, calc(48 * var(--u)), 52px);
  line-height: 1;
  color: var(--adun-blue);
}

.adun-operand__digit.is-hidden,
.adun-op.is-hidden,
.adun-result.is-hidden,
.adun-feedback.is-hidden,
.adun-caption.is-hidden,
.adun-cta.is-hidden,
.adun-next.is-hidden {
  display: none !important;
}

.adun-op {
  font-weight: 900;
  font-size: clamp(26px, calc(52 * var(--u)), 56px);
  line-height: 1;
  color: var(--adun-blue);
  align-self: center;
  flex: 0 0 auto;
  /* Aliniere cu zona vizuală (deasupra cifrei) */
  padding-bottom: clamp(18px, calc(36 * var(--u)), 40px);
}

.adun-result {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  min-width: clamp(48px, calc(88 * var(--u)), 96px);
  min-height: clamp(48px, calc(88 * var(--u)), 96px);
  padding: clamp(6px, calc(10 * var(--u)), 12px) clamp(10px, calc(16 * var(--u)), 18px);
  border-radius: clamp(12px, calc(20 * var(--u)), 22px);
  background: var(--adun-blue);
  color: #fff;
  font-weight: 900;
  font-size: clamp(26px, calc(52 * var(--u)), 56px);
  line-height: 1;
  box-shadow: 0 8px 18px rgba(47, 79, 191, 0.25);
  animation: adun-pop 0.4s ease both;
}

.adun-caption {
  flex: 0 0 auto;
  margin: 0;
  text-align: center;
  font-weight: 700;
  font-size: clamp(12px, calc(17 * var(--u)), 18px);
  color: var(--adun-muted);
}

.adun-caption.is-active {
  color: var(--adun-caption);
}

.adun-feedback {
  flex: 0 0 auto;
  margin-top: clamp(4px, calc(8 * var(--u)), 10px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(6px, calc(10 * var(--u)), 12px);
  min-width: 0;
  max-width: 100%;
}

.adun-feedback__excelent {
  margin: 0;
  font-weight: 700;
  font-size: clamp(11px, calc(15 * var(--u)), 16px);
  color: var(--adun-muted);
  text-align: center;
}

.adun-bravo {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(4px, calc(8 * var(--u)), 10px);
  padding: clamp(8px, calc(12 * var(--u)), 14px) clamp(8px, calc(14 * var(--u)), 16px);
  border-radius: clamp(12px, calc(16 * var(--u)), 18px);
  background: var(--adun-lavender);
  min-width: 0;
}

.adun-bravo__text {
  margin: 0;
  font-weight: 800;
  font-size: clamp(13px, calc(18 * var(--u)), 20px);
  color: var(--adun-blue);
  text-align: center;
}

.adun-bravo__icons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(3px, calc(5 * var(--u)), 6px);
  max-width: 100%;
}

.adun-bravo__icons .adun-icon {
  width: clamp(16px, calc(32 * var(--u)), 36px);
  height: clamp(18px, calc(34 * var(--u)), 40px);
  object-fit: contain;
}

.adun-cta,
.adun-next {
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: #fff;
  background: var(--adun-blue);
  box-shadow: 0 8px 18px rgba(47, 79, 191, 0.22);
  transition: background 0.15s ease, transform 0.15s ease;
}

.adun-cta:hover,
.adun-next:hover {
  background: var(--adun-blue-deep);
  transform: translateY(-1px);
}

.adun-cta {
  flex: 0 0 auto;
  height: var(--cta-h);
  padding: 0 clamp(18px, calc(32 * var(--u)), 36px);
  border-radius: clamp(12px, calc(16 * var(--u)), 18px);
  font-size: clamp(14px, calc(20 * var(--u)), 22px);
  max-width: calc(100% - 8px);
  white-space: nowrap;
}

.adun-next {
  position: fixed;
  right: max(10px, calc(24 * var(--u)));
  bottom: max(10px, calc(20 * var(--u)));
  z-index: 40;
  display: inline-flex;
  align-items: center;
  gap: calc(6 * var(--u));
  height: var(--next-h);
  padding: 0 clamp(14px, calc(22 * var(--u)), 26px);
  border-radius: clamp(12px, calc(16 * var(--u)), 18px);
  font-size: clamp(13px, calc(18 * var(--u)), 20px);
}

.adun-next__chevron {
  font-weight: 900;
}

@keyframes adun-pop {
  from {
    opacity: 0;
    transform: scale(0.72);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Portrait îngust: compactăm ecuația, fără scroll pe pagină */
@media (max-width: 640px), (max-height: 700px) {
  .adun-header {
    padding-inline: max(56px, calc(80 * var(--u)));
  }

  .adun-equation {
    gap: clamp(4px, 1.5vw, 10px);
  }

  .adun-op {
    padding-bottom: clamp(14px, calc(28 * var(--u)), 32px);
  }

  .adun-operand {
    max-width: 46%;
  }

  .adun-cta {
    white-space: normal;
    text-align: center;
    line-height: 1.2;
    height: auto;
    min-height: var(--cta-h);
    padding: clamp(10px, calc(12 * var(--u)), 14px) clamp(14px, calc(20 * var(--u)), 24px);
  }
}

@media (max-width: 380px) {
  .adun-exit span {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .adun-header {
    padding-inline: max(48px, calc(64 * var(--u)));
  }
}

/* Împărțire / înmulțire: grupuri pe bandă largă, ecuație doar cu cifre */
.impar-page .adun-groups-stage,
.inmul-page .adun-groups-stage {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  overflow: hidden;
  padding: clamp(4px, calc(8 * var(--u)), 10px) 0;
}

.impar-page .adun-groups-grid,
.inmul-page .adun-groups-grid {
  width: 100%;
}

.impar-page .adun-equation--digits,
.inmul-page .adun-equation--digits {
  flex: 0 0 auto;
  min-height: 0;
  gap: clamp(8px, calc(14 * var(--u)), 16px);
  padding: clamp(4px, calc(8 * var(--u)), 10px) 0;
}

.impar-page .adun-equation--digits .adun-operand,
.inmul-page .adun-equation--digits .adun-operand {
  max-width: none;
  gap: 0;
}

.impar-page .adun-equation--digits .adun-operand__visual,
.inmul-page .adun-equation--digits .adun-operand__visual {
  display: none !important;
}

.impar-page .adun-equation--digits .adun-op,
.inmul-page .adun-equation--digits .adun-op {
  padding-bottom: 0;
}

.impar-page .adun-card.is-result .adun-groups-stage,
.inmul-page .adun-card.is-result .adun-groups-stage {
  flex: 1 1 auto;
}

.impar-page .adun-card.is-result .adun-feedback,
.inmul-page .adun-card.is-result .adun-feedback {
  flex: 0 0 auto;
}

.impar-page .adun-card.is-result .adun-bravo,
.inmul-page .adun-card.is-result .adun-bravo {
  background: transparent;
  padding: 0;
}

.impar-page--quiz-list .adun-ex-card .adun-groups-stage,
.inmul-page--quiz-list .adun-ex-card .adun-groups-stage {
  width: 100%;
  padding: clamp(8px, calc(12 * var(--u)), 14px) 0;
}

.impar-page--quiz-list .adun-ex-card .adun-equation .adun-operand__visual,
.inmul-page--quiz-list .adun-ex-card .adun-equation .adun-operand__visual {
  display: none !important;
}

.impar-page--quiz-list .adun-ex-card .adun-operand,
.inmul-page--quiz-list .adun-ex-card .adun-operand {
  max-width: none;
  gap: 0;
}

.impar-page--quiz-list .adun-ex-card .adun-op,
.inmul-page--quiz-list .adun-ex-card .adun-op {
  padding-bottom: 0;
  align-self: center;
}