/* Reset & custom properties */
.rb-root, .rb-root *, .rb-root *::before, .rb-root *::after {
  box-sizing: border-box;
}

.rb-root {
  /* Centrale toolkit-tokens uit schoolvoetbal-core; hex-fallback als core niet actief is. */
  --rb-blue:        var(--sv-color-primary, #003d7c);
  --rb-blue-hover:  var(--sv-color-primary-dark, #002952);
  --rb-green:       var(--sv-color-accent, #6cbe57);
  --rb-green-dark:  var(--sv-color-accent-dark, #5ba249);
  --rb-light-blue:  var(--sv-color-primary-light, #def1fb);
  --rb-light-green: var(--sv-color-accent-light, #e6f4e2);
  --rb-text:        var(--sv-color-text, #333333);
  --rb-text-muted:  var(--sv-color-text-muted, #666666);
  --rb-border:      var(--sv-color-border, #dddddd);
  --rb-white:       #ffffff;
}

/* Wrapper */
.rb-root .rebus-wrapper {
  max-width: 680px;
  width: 100%;
  margin: 0 auto;
  text-align: center;
  font-family: inherit;
  color: var(--rb-text);
  position: relative;
  overflow: hidden;
  padding: 24px 20px;
}

/* Image */
.rb-root .rb-image-container {
  margin-bottom: 60px;
  display: inline-block;
  max-width: 100%;
}

.rb-root .rb-image {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: contain;
}

/* Input + button */
.rb-root .rb-input-area {
  display: flex;
  gap: 10px;
  justify-content: center;
  align-items: stretch;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.rb-root .rb-answer-input {
  flex: 1 1 0;
  min-width: 0;
  padding: 13px 18px;
  border: 2px solid var(--rb-border);
  border-radius: 999px;
  font-size: 1.05rem;
  font-family: inherit;
  color: var(--rb-text);
  background: var(--rb-white);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  text-align: center;
}

.rb-root .rb-answer-input::placeholder {
  color: #c0c0c0;
  font-family: inherit;
}

.rb-root .rb-answer-input:focus {
  border-color: var(--rb-blue);
  box-shadow: 0 0 0 3px rgba(0, 61, 124, 0.12);
}

.rb-root .rb-answer-input.rb-shake {
  animation: rb_shake 0.4s cubic-bezier(0.36, 0.07, 0.19, 0.97);
}

.rb-root .rb-submit-btn {
  padding: 13px 28px;
  background-color: var(--rb-green);
  color: var(--rb-white);
  border: none;
  border-radius: 999px;
  font-size: 1.05rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background-color 0.2s, transform 0.1s, box-shadow 0.2s;
  flex-shrink: 0;
}

.rb-root .rb-submit-btn:hover {
  background-color: var(--rb-green-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(108, 190, 87, 0.3);
}

.rb-root .rb-submit-btn:active {
  transform: translateY(0);
}

.rb-root .rb-submit-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

/* Feedback */
.rb-root .rb-feedback {
  min-height: 28px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--rb-blue);
  margin-bottom: 4px;
  transition: opacity 0.3s;
}

.rb-root .rb-feedback.rb-wrong {
  color: var(--sv-color-error, #c0392b);
}

/* Solution reveal */
.rb-root .rb-reveal-link {
  display: inline-block;
  margin-top: 6px;
  font-size: 0.9rem;
  color: var(--rb-text-muted);
  text-decoration: underline;
  cursor: pointer;
  transition: color 0.2s;
}

.rb-root .rb-reveal-link:hover {
  color: var(--rb-blue);
}

.rb-root .rb-revealed-answer {
  margin-top: 10px;
  padding: 14px 20px;
  background: var(--rb-light-blue);
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--rb-blue);
}

/* Celebration screen */
.rb-root .rb-celebration {
  margin-top: 20px;
  padding: 28px 24px;
  background: linear-gradient(135deg, var(--rb-light-blue) 0%, var(--rb-light-green) 100%);
  border: 2px solid var(--rb-blue);
  border-radius: 16px;
  box-shadow: 0 6px 24px rgba(0, 61, 124, 0.15);
  animation: rb_pop_in 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.rb-root .rb-celebration-content {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--rb-blue);
  line-height: 1.4;
}

.rb-root .rb-solution-reveal {
  margin-top: 12px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--rb-blue);
  letter-spacing: 0.5px;
  animation: rb_fade_up 0.6s 0.3s both;
}

/* Reset button */
.rb-root .rb-reset-btn {
  display: inline-block;
  margin-top: 18px;
  padding: 10px 24px;
  background: var(--rb-white);
  color: var(--rb-blue);
  border: 2px solid var(--rb-blue);
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s, transform 0.1s;
}

.rb-root .rb-reset-btn:hover {
  background-color: var(--rb-blue);
  color: var(--rb-white);
  transform: translateY(-1px);
}

/* Focus ring: only visible during keyboard navigation, not on mouse click */
.rb-root .rb-submit-btn:focus-visible,
.rb-root .rb-reset-btn:focus-visible {
  outline: 2px solid var(--rb-green);
  outline-offset: 2px;
}

/* Confetti */
.rb-root .rb-confetti {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  top: -12px;
  opacity: 0;
  pointer-events: none;
  animation: rb_fall linear forwards;
  z-index: 5;
}

/* Keyframes */
@keyframes rb_shake {
  10%, 90%  { transform: translateX(-3px); }
  20%, 80%  { transform: translateX(4px);  }
  30%, 50%, 70% { transform: translateX(-5px); }
  40%, 60%  { transform: translateX(5px);  }
  100%      { transform: translateX(0);    }
}

@keyframes rb_pop_in {
  from { opacity: 0; transform: scale(0.85); }
  to   { opacity: 1; transform: scale(1);    }
}

@keyframes rb_fade_up {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0);   }
}

@keyframes rb_fall {
  to { transform: translateY(700px) rotate(540deg); opacity: 1; }
}

/* Responsive */
@media (max-width: 600px) {
  .rb-root .rebus-wrapper       { padding: 16px 10px; }
  .rb-root .rb-input-area       { flex-direction: column; align-items: stretch; }
  .rb-root .rb-answer-input     { flex: none; width: 100%; max-width: 100%; font-size: 16px; padding: 11px 14px; }
  .rb-root .rb-submit-btn       { flex: none; font-size: 0.95rem; padding: 12px 20px; }
  .rb-root .rb-celebration-content { font-size: 1.3rem; }
  .rb-root .rb-solution-reveal  { font-size: 1.05rem; }
}