/* Flashcards page specific styles */

.fc-header { margin-bottom: 1.6rem; }
.fc-header h1 {
  margin: 0 0 0.4rem;
  font-family: 'Lora', serif;
  font-size: 2rem;
  border-bottom: 2px solid var(--accent);
  padding-bottom: 0.4rem;
}
.fc-lead { color: var(--text-soft); font-size: 0.98rem; }
.fc-lead strong { color: var(--accent); }

/* Stats row */
.fc-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.7rem;
  margin: 1.2rem 0;
}
.fc-stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.8rem 1rem;
  text-align: center;
}
.fc-stat-value {
  font-family: 'Lora', serif;
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--accent);
  line-height: 1.1;
}
.fc-stat-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-top: 0.3rem;
}

/* Controls */
.fc-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.4rem;
  padding: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.fc-filter-group { flex: 1 1 60%; min-width: 280px; }
.fc-filter-label {
  display: block;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 0.6rem;
  font-weight: 600;
}
.fc-filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.fc-chip {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.32rem 0.7rem;
  border-radius: 20px;
  font-size: 0.83rem;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.12s;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}
.fc-chip:hover { border-color: var(--accent); color: var(--accent); }
.fc-chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}
.fc-chip.locked {
  opacity: 0.55;
  color: var(--text-soft);
  border-style: dashed;
}
.fc-chip.locked:hover {
  opacity: 1;
  border-style: solid;
  border-color: #d4a649;
  color: #b8852f;
}
.fc-chip-count {
  font-size: 0.74rem;
  opacity: 0.7;
}
.fc-chip.active .fc-chip-count { opacity: 0.85; }

.fc-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 0 0 auto;
}
.fc-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.92rem;
  cursor: pointer;
}
.fc-toggle input { width: 1rem; height: 1rem; accent-color: var(--accent); }
.fc-toggle-help {
  font-size: 0.85rem;
  color: var(--muted);
  cursor: help;
}
.fc-action-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.4rem 0.9rem;
  border-radius: 6px;
  font-family: inherit;
  font-size: 0.88rem;
  cursor: pointer;
  transition: all 0.12s;
}
.fc-action-btn:hover { border-color: var(--accent); color: var(--accent); }
.fc-action-btn.danger:hover { border-color: #c0392b; color: #c0392b; }

/* Deck / Card */
.fc-deck { margin: 1.5rem 0; }
.fc-card-wrap {
  perspective: 1500px;
  margin-bottom: 1.2rem;
}
.fc-card {
  position: relative;
  width: 100%;
  min-height: 360px;
  cursor: pointer;
  transform-style: preserve-3d;
  transition: transform 0.55s cubic-bezier(.25, .8, .25, 1);
  outline: none;
}
.fc-card.flipped { transform: rotateY(180deg); }
.fc-card:focus { outline: 2px solid var(--accent); outline-offset: 4px; border-radius: 14px; }

.fc-card-face {
  position: absolute;
  inset: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 2.2rem 2rem 1.5rem;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 10px 30px rgba(0,0,0,.07);
  overflow: auto;
}
.fc-back {
  transform: rotateY(180deg);
  background: linear-gradient(to bottom right, var(--surface), var(--def-bg));
}

.fc-card-tag {
  display: inline-block;
  align-self: flex-start;
  background: var(--accent-soft);
  color: var(--accent);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.74rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 1.2rem;
}

.fc-card-q {
  font-family: 'Lora', serif;
  font-size: 1.45rem;
  font-weight: 500;
  line-height: 1.4;
  color: var(--text);
  flex: 1;
  display: flex;
  align-items: center;
}

.fc-card-a {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text);
  flex: 1;
}
.fc-card-a strong { color: var(--accent); font-weight: 600; }
.fc-card-a ul, .fc-card-a ol { padding-left: 1.4rem; margin: 0.4rem 0; }
.fc-card-a li { margin: 0.15rem 0; }
.fc-card-a p { margin: 0.4rem 0; }

.fc-card-hint {
  text-align: center;
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: auto;
  padding-top: 1rem;
}
.fc-card-hint kbd {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.05rem 0.4rem;
  font-size: 0.85em;
  font-family: 'JetBrains Mono', monospace;
}

/* Navigation row */
.fc-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin: 1rem 0;
}
.fc-nav-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.55rem 1.2rem;
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.12s;
  min-width: 110px;
}
.fc-nav-btn:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
}
.fc-nav-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.fc-counter {
  font-family: 'Lora', serif;
  font-size: 1rem;
  color: var(--text-soft);
}

/* Rating buttons */
.fc-rating {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
  margin: 1rem 0;
}
.fc-rate-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1rem;
  border-radius: 10px;
  border: 2px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  position: relative;
}
.fc-rate-btn:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,.08); }
.fc-rate-btn .fc-rate-icon {
  font-size: 1.2rem;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.fc-rate-btn.unknown:hover { border-color: #c0392b; color: #c0392b; }
.fc-rate-btn.unknown .fc-rate-icon { background: #fde7e2; color: #c0392b; }
.fc-rate-btn.known:hover { border-color: #2f7d32; color: #2f7d32; }
.fc-rate-btn.known .fc-rate-icon { background: #e0f0e1; color: #2f7d32; }
.fc-shortcut {
  position: absolute;
  top: 6px;
  right: 8px;
  font-size: 0.7rem;
  color: var(--muted);
  background: var(--code-bg);
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
}

.fc-help {
  text-align: center;
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 1rem;
}
.fc-help kbd {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.1rem 0.4rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85em;
}

/* Empty state */
.fc-empty {
  text-align: center;
  padding: 4rem 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.fc-empty h2 { font-family: 'Lora', serif; }

/* Dark theme adaptations */
[data-theme="dark"] .fc-rate-btn.unknown .fc-rate-icon { background: #4a1e18; color: #ec7058; }
[data-theme="dark"] .fc-rate-btn.known .fc-rate-icon { background: #1f3a22; color: #5cb35f; }

/* Mobile */
@media (max-width: 700px) {
  .fc-stats { grid-template-columns: repeat(2, 1fr); }
  .fc-card-q { font-size: 1.2rem; }
  .fc-card-face { padding: 1.5rem 1.2rem 1rem; }
  .fc-controls { flex-direction: column; }
  .fc-actions { flex-direction: row; flex-wrap: wrap; }
  .fc-rating { grid-template-columns: 1fr; }
  .fc-nav-btn { min-width: 80px; padding: 0.5rem 0.7rem; font-size: 0.88rem; }
  .fc-rate-btn .fc-rate-text { display: none; }
  .fc-rate-btn { padding: 0.7rem; }
}