/* sets.css — Word Sets page styles */

#page-subtitle {
  font-size: 0.78rem;
  color: var(--dim);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-left: 0.25rem;
}

#sets-layout {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ── Card grid ───────────────────────────────────────────────────────────── */

#sets-grid {
  flex: 1;
  padding: 1rem;
  overflow-y: auto;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(185px, 1fr));
  gap: 0.65rem;
  align-content: start;
}

.set-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.7rem 0.8rem 0.65rem;
  transition: border-color 0.15s;
}

.set-card:hover         { border-color: var(--accent); }
.set-card.active        { border-color: var(--accent); background: rgba(88,166,255,0.06); }

.set-name {
  font-size: 0.82rem;
  font-weight: bold;
  margin-bottom: 0.45rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.diff-buttons {
  display: flex;
  gap: 0.3rem;
}

.diff-btn {
  flex: 1;
  font-size: 0.64rem;
  padding: 0.2rem 0.15rem;
  border-radius: 4px;
  cursor: pointer;
  border: 1px solid;
  background: transparent;
  font-family: inherit;
  letter-spacing: 0.04em;
  transition: background 0.15s, color 0.15s;
}

.diff-btn.easy  { border-color: var(--success); color: var(--success); }
.diff-btn.inter { border-color: var(--warning); color: var(--warning); }
.diff-btn.adv   { border-color: var(--danger);  color: var(--danger); }

.diff-btn.active.easy  { background: rgba(63,185,80,0.18); }
.diff-btn.active.inter { background: rgba(210,153,34,0.18); }
.diff-btn.active.adv   { background: rgba(248,81,73,0.18); }

/* ── Preview panel ───────────────────────────────────────────────────────── */

#preview-panel {
  width: 260px;
  flex-shrink: 0;
  background: var(--surface);
  border-left: 1px solid var(--border);
  padding: 1rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

#preview-placeholder {
  color: var(--dim);
  font-size: 0.78rem;
  font-style: italic;
  text-align: center;
  margin-top: 2rem;
  line-height: 1.5;
}

#preview-title {
  font-size: 0.88rem;
  font-weight: bold;
}

#preview-meta {
  font-size: 0.72rem;
  color: var(--dim);
}

#preview-words {
  display: flex;
  flex-wrap: wrap;
  gap: 0.28rem;
  margin-top: 0.25rem;
}

.word-badge {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.18rem 0.42rem;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
}

.hidden { display: none !important; }