/* ===========================================================
   FLASHCARDS – NOTEBOOKLM STYLE + MOBILE OPTIMISED
   =========================================================== */

/* Base container */
.flashcard-app {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 20px 32px;
  border-radius: 26px;
  background: #050816;
  color: #ffffff;
  position: relative;
  overflow: hidden;
}

/* Prevent theme from overriding things */
.flashcard-app *,
.flashcard-app *::before,
.flashcard-app *::after {
  box-sizing: border-box;
}

/* Header */
.flashcard-header {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.flashcard-main-title {
  margin: 0;
  font-size: 1.9rem;
  font-weight: 700;
  color: #ffffff !important;
}

.flashcard-subtitle {
  margin: 4px 0 0;
  font-size: 0.95rem;
  color: #d1d5db !important;
}

.flashcard-header-right {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.85rem;
  color: #e5e7eb;
}

/* Maximise button */
.flashcard-maximize-toggle {
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(15, 23, 42, 0.85);
  padding: 4px 10px;
  cursor: pointer;
  color: #ffffff;
  line-height: 1;
  transition: background 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}
.flashcard-maximize-toggle:hover {
  background: rgba(15, 23, 42, 1);
  border-color: rgba(255, 255, 255, 0.45);
  transform: translateY(-1px);
}

/* Glow + layout */
.flashcard-main {
  position: relative;
  z-index: 1;
  margin-top: 28px;
  margin-bottom: 22px;
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) 64px;
  align-items: center;
  gap: 18px;
}

/* Glow behind card */
.flashcard-main::before {
  content: "";
  position: absolute;
  top: 55%;
  left: 50%;
  width: 640px;
  height: 640px;
  transform: translate(-50%, -50%);
  background:
    radial-gradient(circle at 30% 40%, rgba(59, 130, 246, 0.2), transparent 60%),
    radial-gradient(circle at 70% 60%, rgba(16, 185, 129, 0.25), transparent 65%);
  filter: blur(50px);
  opacity: 0.9;
  pointer-events: none;
  z-index: -1;
}

/* Arrows */
.flashcard-nav-btn {
  width: 52px;
  height: 52px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.7);
  background: rgba(15, 23, 42, 0.96);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.5rem;
  color: #f9fafb;
  transition: background 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}
.flashcard-nav-btn:hover {
  background: rgba(15, 23, 42, 1);
  border-color: rgba(248, 250, 252, 0.9);
  transform: translateY(-1px);
}

/* Card */
.flashcard-card-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.flashcard-card {
  position: relative;
  width: 100%;
  max-width: 440px;
  min-height: 440px;
  border-radius: 28px;
  margin: 0 auto;
  background: #111827;
  box-shadow: 0 26px 80px rgba(0, 0, 0, 0.9);
  transform-style: preserve-3d;
  padding: 32px 28px 70px;
  cursor: pointer;
}

/* Card faces */
.flashcard-face {
  position: absolute;
  inset: 22px 20px 70px 20px;
  backface-visibility: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 1.15rem;
  line-height: 1.45;
  color: #f9fafb;
}

.flashcard-answer {
  transform: rotateY(180deg);
  opacity: 0;
}

.flashcard-card.is-flipped .flashcard-question {
  opacity: 0;
  transform: rotateY(180deg);
}
.flashcard-card.is-flipped .flashcard-answer {
  opacity: 1;
  transform: rotateY(0deg);
}

/* Flip button */
.flashcard-flip-btn {
  position: absolute;
  left: 50%;
  bottom: 22px;
  transform: translateX(-50%);
  padding: 9px 26px;
  border-radius: 999px;
  border: 1px solid rgba(229, 231, 235, 0.9);
  background: rgba(15, 23, 42, 0.95);
  color: #f9fafb;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.2s ease;
}

/* Card meta */
.flashcard-card-meta {
  margin-top: 10px;
  font-size: 0.88rem;
  color: #d1d5db;
}

/* Footer */
.flashcard-footer {
  position: relative;
  z-index: 2;
  margin-top: 10px;
}

.flashcard-progress-bar {
  height: 4px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.4);
  overflow: hidden;
}

.flashcard-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #3b82f6, #22c55e);
  width: 0%;
  transition: width 0.25s ease;
}

.flashcard-tip {
  margin-top: 6px;
  font-size: 0.86rem;
  color: #e5e7eb;
  text-align: center;
}

/* Fullscreen */
.flashcard-fullscreen {
  position: fixed !important;
  inset: 0 !important;
  max-width: none !important;
  border-radius: 0 !important;
  padding: 28px 32px 32px !important;
  background: #020617 !important;
  z-index: 99999 !important;
}

.flashcard-fullscreen .flashcard-main::before {
  width: 820px;
  height: 820px;
  filter: blur(80px);
}

.flashcard-fullscreen .flashcard-card {
  max-width: 460px;
  min-height: 460px;
}

/* ===========================================================
   MOBILE TWEAKS – LESS "TOWER", MORE NOTEBOOKLM
   =========================================================== */
@media (max-width: 720px) {
  .flashcard-app {
    padding: 18px 14px 22px;
    border-radius: 0;
  }

  .flashcard-main {
    grid-template-columns: 44px minmax(0, 1fr) 44px;
    margin-top: 18px;
    margin-bottom: 18px;
    gap: 12px;
  }

  .flashcard-nav-btn {
    width: 44px;
    height: 44px;
    font-size: 1.3rem;
  }

  .flashcard-card {
    max-width: 92vw;      /* Wider card on mobile */
    min-height: 340px;    /* Shorter so it doesn’t feel like a tower */
    padding: 26px 18px 64px;
    border-radius: 32px;
  }

  .flashcard-face {
    inset: 18px 16px 64px 16px;
    font-size: 1.05rem;
  }

  .flashcard-card-meta {
    font-size: 0.82rem;
  }

  .flashcard-tip {
    font-size: 0.8rem;
  }
}

/* ===========================================================
   SEO OUTPUT – VISIBLE TO BOTS, NOT TO HUMANS
   =========================================================== */

/* wrapper rendered by the block */
.flashcard-seo-content {
  position: relative;
  margin-top: 24px;
  opacity: 0;
  height: 0;
  overflow: hidden;
}

/* individual Q/A items */
.flashcard-seo-item {
  margin: 0;
  padding: 0;
}

.flashcard-seo-question {
  margin: 12px 0 4px;
  font-weight: 600;
}

.flashcard-seo-answer {
  margin: 0 0 4px;
  font-weight: 400;
}

/* reset any theme styles inside SEO block */
.flashcard-seo-heading,
.flashcard-seo-list,
.flashcard-seo-item,
.flashcard-seo-question,
.flashcard-seo-answer,
.flashcard-seo-empty {
  color: inherit;
  list-style: none;
}

.flashcard-seo-list {
  display: block;
  margin: 0;
  padding: 0;
}