/* Demo page additions only (keeps your global style.css intact) */

.demo-hero {
  padding-bottom: 40px;
}

.demo-quickgrid {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.demo-pill {
  padding: 10px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  display: inline-flex;
  gap: 8px;
  align-items: center;
}

.demo-section {
  padding: 60px 0;
}

.demo-card {
  background: var(--card-bg, rgba(255, 255, 255, 0.06));
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: 18px;
  padding: 18px;
  backdrop-filter: blur(8px);
}

.demo-card + .demo-card {
  margin-top: 16px;
}

.demo-card-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 12px;
}

.demo-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.demo-tag {
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(0, 0, 0, 0.14);
}

.demo-small {
  padding: 10px 12px !important;
  font-size: 14px !important;
}

.demo-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 14px;
}

/* Flashcard */
.flashcard {
  margin: 14px auto 0;
  width: min(720px, 100%);
  height: 240px;
  perspective: 1100px;
  outline: none;
}

.flashcard-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.5s ease;
  transform-style: preserve-3d;
}

.flashcard.is-flipped .flashcard-inner {
  transform: rotateY(180deg);
}

.flashcard-face {
  position: absolute;
  inset: 0;
  border-radius: 16px;
  padding: 18px;
  backface-visibility: hidden;
  border: 1px solid rgba(255, 255, 255, 0.10);
  background: rgba(0, 0, 0, 0.18);
  display: flex;
  flex-direction: column;
  gap: 10px;
  justify-content: center;
}

.flashcard-back {
  transform: rotateY(180deg);
}

.flashcard-label {
  font-size: 12px;
  opacity: 0.8;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.flashcard-text {
  font-size: 20px;
  line-height: 1.35;
}

/* Quiz */
.quiz-question {
  font-size: 18px;
  line-height: 1.4;
  margin: 10px 0 14px;
}

.quiz-options {
  display: grid;
  gap: 10px;
}

.quiz-option {
  text-align: left;
  width: 100%;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(0, 0, 0, 0.18);
  cursor: pointer;
  transition: transform 0.12s ease;
}

.quiz-option:hover {
  transform: translateY(-1px);
}

.quiz-option[disabled] {
  opacity: 0.75;
  cursor: not-allowed;
}

.quiz-feedback {
  margin-top: 12px;
  min-height: 26px;
  opacity: 0.95;
}

/* Past paper */
.pp-block {
  margin-top: 8px;
}

.pp-title {
  margin: 8px 0;
}

.pp-text {
  opacity: 0.92;
  line-height: 1.55;
}

.pp-label {
  display: block;
  margin: 14px 0 8px;
  opacity: 0.9;
}

.pp-textarea {
  width: 100%;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(0, 0, 0, 0.18);
  color: inherit;
  padding: 12px 12px;
  outline: none;
}

.pp-reveal {
  margin-top: 14px;
}

.pp-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.pp-panel {
  border-radius: 14px;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.10);
  background: rgba(0, 0, 0, 0.14);
}

.pp-subtitle {
  margin: 0 0 10px 0;
  font-size: 14px;
  opacity: 0.95;
  display: flex;
  gap: 8px;
  align-items: center;
}

.pp-list {
  margin: 0;
  padding-left: 18px;
  line-height: 1.55;
  opacity: 0.92;
}

.pp-hint {
  margin-top: 12px;
  opacity: 0.8;
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 13px;
}

/* Board */
.demo-board {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr 1fr;
}

.board-title {
  margin: 0 0 10px 0;
}

.board-form {
  display: grid;
  gap: 12px;
}

.board-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.board-field label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  opacity: 0.9;
}

.board-input {
  width: 100%;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(0, 0, 0, 0.18);
  color: inherit;
  padding: 11px 12px;
  outline: none;
}

.board-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.board-counter {
  font-size: 12px;
  opacity: 0.85;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(0, 0, 0, 0.14);
}

.board-list {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}

.board-item {
  border-radius: 14px;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.10);
  background: rgba(0, 0, 0, 0.14);
}

.board-item-top {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  margin-bottom: 8px;
}

.board-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.board-badge {
  font-size: 12px;
  padding: 4px 8px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(0, 0, 0, 0.16);
}

.board-item-note {
  opacity: 0.92;
  line-height: 1.5;
  white-space: pre-wrap;
}

.board-delete {
  border: none;
  background: transparent;
  color: inherit;
  cursor: pointer;
  opacity: 0.85;
}

.board-delete:hover {
  opacity: 1;
}

.board-empty {
  opacity: 0.75;
  text-align: center;
  margin-top: 12px;
  padding: 14px;
  border-radius: 14px;
  border: 1px dashed rgba(255, 255, 255, 0.20);
}

@media (max-width: 900px) {
  .pp-grid {
    grid-template-columns: 1fr;
  }

  .demo-board {
    grid-template-columns: 1fr;
  }

  .board-row {
    grid-template-columns: 1fr;
  }

  .flashcard {
    height: 260px;
  }
}