/* LINGUAPHIX Grammar Platform */
.lp-platform {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 16px 48px;
  font-family: var(--font-sans, system-ui, -apple-system, sans-serif);
  color: var(--site-text);
  --color-text-primary: var(--site-text);
  --color-text-secondary: var(--site-muted);
  --color-border-tertiary: var(--site-border);
  --color-border-secondary: var(--site-border);
  --color-background-primary: var(--site-surface);
  --color-background-secondary: var(--site-elevated);
}

.lp-header {
  padding: 18px 0 14px;
  border-bottom: 1px solid var(--site-border);
  margin-bottom: 16px;
}
.lp-title { font-size: 22px; font-weight: 600; margin: 0 0 4px; }
.lp-subtitle { font-size: 13px; color: var(--site-muted); margin: 0; }
.lp-section { margin-bottom: 14px; }
.lp-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--site-muted);
  margin-bottom: 6px;
}
.lp-level-tabs, .lp-cat-tabs, .lp-ex-types { display: flex; flex-wrap: wrap; gap: 6px; }
.lp-tab, .lp-cat, .lp-ex-type {
  border: 1px solid var(--site-border);
  background: var(--site-surface);
  color: var(--site-muted);
  border-radius: 8px;
  padding: 6px 14px;
  font-size: 13px;
  cursor: pointer;
  transition: all .15s;
  font-family: inherit;
}
.lp-tab:hover, .lp-cat:hover, .lp-ex-type:hover { opacity: .85; }
.lp-tab.active { color: var(--site-on-accent); border-color: transparent; font-weight: 500; }
.lp-cat { border-radius: 20px; font-size: 12px; padding: 5px 12px; }
.lp-cat.active { font-weight: 500; }
.lp-card {
  border: 1px solid var(--site-border);
  border-radius: 12px;
  overflow: hidden;
  background: var(--site-surface);
}
.lp-card-head {
  padding: 14px 18px;
  background: var(--site-elevated);
  border-bottom: 1px solid var(--site-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.lp-view-toggle {
  display: flex;
  border: 1px solid var(--site-border);
  border-radius: 8px;
  overflow: hidden;
}
.lp-view-btn {
  padding: 6px 14px;
  font-size: 12px;
  cursor: pointer;
  border: none;
  background: transparent;
  color: var(--site-muted);
  font-family: inherit;
}
.lp-view-btn.active {
  background: var(--site-accent-solid);
  color: var(--site-on-accent);
  font-weight: 500;
}
.lp-card-body { padding: 18px 20px; }
.lp-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  padding: 3px 8px;
  border-radius: 20px;
  border: 1px solid;
  margin: 2px;
}
.lp-meta { font-size: 11px; color: var(--site-muted); margin-top: 4px; }
.lp-points { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px; }
.lp-precis {
  font-size: 13px;
  line-height: 1.85;
  padding: 16px 18px;
  border-left: 3px solid var(--site-accent);
  border-radius: 0 8px 8px 0;
  white-space: pre-wrap;
  background: var(--site-accent-soft);
}
.lp-empty { text-align: center; padding: 40px 0; color: var(--site-muted); font-size: 13px; }
.lp-ex-type.active {
  background: var(--site-accent-solid);
  color: var(--site-on-accent);
  border-color: var(--site-accent-solid);
  font-weight: 500;
}
.lp-ex-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--site-border);
}
.lp-btn {
  padding: 8px 16px;
  font-size: 13px;
  border-radius: 8px;
  cursor: pointer;
  border: 1px solid var(--site-border);
  background: var(--site-elevated);
  color: var(--site-text);
  font-family: inherit;
}
.lp-btn-primary {
  background: var(--site-accent-solid);
  color: var(--site-on-accent);
  border: none;
  font-weight: 500;
}
.lp-btn-sm { padding: 2px 10px; font-size: 11px; }
.lp-btn:disabled { opacity: .5; cursor: not-allowed; }
.lp-score, .lp-progress {
  font-size: 14px;
  font-weight: 500;
  color: var(--site-accent-light);
  margin-left: auto;
}
.lp-ex-block {
  margin-bottom: 16px;
  padding: 14px 16px;
  border: 1px solid var(--site-border);
  border-radius: 10px;
  background: var(--site-surface);
}
.lp-ex-block.lp-ok { border-color: var(--state-ok-border); }
.lp-ex-block.lp-ko { border-color: var(--state-error-border); }
.lp-ex-num { font-size: 13px; color: var(--site-muted); margin-bottom: 8px; }
.lp-hint { font-style: italic; opacity: .85; font-size: 12px; }
.lp-ex-body { font-size: 14px; line-height: 1.9; }
.lp-input, .lp-textarea {
  padding: 6px 10px;
  border: 1px solid var(--site-border);
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
  background: var(--site-bg);
  color: var(--site-text);
}
.lp-gap-input { width: auto; min-width: 80px; text-align: center; margin: 0 4px; }
.lp-input.lp-ok, .lp-textarea.lp-ok {
  background: var(--state-ok-bg);
  border-color: var(--state-ok-border);
  color: var(--state-ok-text);
}
.lp-input.lp-ko, .lp-textarea.lp-ko {
  background: var(--state-error-bg);
  border-color: var(--state-error-border);
  color: var(--state-error-text);
}
.lp-feedback { font-size: 12px; margin-top: 8px; color: var(--state-ok-text); }
.lp-expl { margin-top: 4px; font-style: italic; color: var(--site-muted); }
.lp-mcq-list { display: flex; flex-direction: column; gap: 6px; }
.lp-mcq-opt {
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid var(--site-border);
  background: var(--site-elevated);
  font-size: 13px;
  cursor: pointer;
  color: var(--site-text);
}
.lp-mcq-opt.lp-selected {
  background: var(--state-info-bg);
  border-color: var(--state-info-border);
  color: var(--state-info-text);
}
.lp-mcq-opt.lp-ok {
  background: var(--state-ok-bg);
  border-color: var(--state-ok-border);
  color: var(--state-ok-text);
}
.lp-mcq-opt.lp-ko {
  background: var(--state-error-bg);
  border-color: var(--state-error-border);
  color: var(--state-error-text);
}
.lp-expl-box {
  margin-top: 8px;
  padding: 8px 12px;
  font-size: 12px;
  background: var(--site-elevated);
  border-left: 3px solid var(--state-warn-border);
  border-radius: 0 8px 8px 0;
  font-style: italic;
  color: var(--site-muted);
}
.lp-match-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.lp-match-col { display: flex; flex-direction: column; gap: 6px; }
.lp-match-item {
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--site-border);
  background: var(--site-elevated);
  font-size: 13px;
  cursor: pointer;
  transition: all .15s;
  color: var(--site-text);
}
.lp-match-item.lp-selected {
  background: var(--state-info-bg);
  border-color: var(--state-info-border);
  color: var(--state-info-text);
}
.lp-match-item.lp-ok {
  background: var(--state-ok-bg);
  border-color: var(--state-ok-border);
  color: var(--state-ok-text);
  opacity: .92;
}
.lp-ok-text { color: var(--state-ok-text); font-weight: 500; }
.lp-fc-wrap { text-align: center; }
.lp-fc-meta { font-size: 12px; color: var(--site-muted); margin-bottom: 10px; }
.lp-fc-card {
  min-height: 160px;
  padding: 24px 20px;
  border-radius: 12px;
  border: 1px solid var(--site-border);
  background: var(--site-elevated);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: background .3s;
  color: var(--site-text);
}
.lp-fc-card.lp-flipped { background: var(--state-ok-bg); }
.lp-fc-text { font-size: 15px; line-height: 1.6; max-width: 100%; }
.lp-fc-actions { display: flex; gap: 10px; margin-top: 12px; }
.lp-fc-actions .lp-btn { flex: 1; }
.lp-fc-review {
  background: var(--state-review-bg);
  border-color: var(--state-review-border);
  color: var(--state-review-text);
}
.lp-fc-know {
  background: var(--state-ok-bg);
  border-color: var(--state-ok-border);
  color: var(--state-ok-text);
}
.lp-original {
  font-size: 14px;
  font-style: italic;
  padding: 8px 12px;
  background: var(--site-elevated);
  border-radius: 6px;
  margin-bottom: 10px;
  color: var(--site-text);
}
.lp-textarea { width: 100%; resize: vertical; }
.lp-footer { margin-top: 12px; font-size: 11px; color: var(--site-muted); text-align: center; }

/* ── Category & level tones (after base .lp-cat so active colors apply) ── */
.lp-cat.lp-cat-tone-teal { color: var(--cat-teal-text); border-color: var(--cat-teal-border); }
.lp-cat.lp-cat-tone-blue { color: var(--cat-blue-text); border-color: var(--cat-blue-border); }
.lp-cat.lp-cat-tone-amber { color: var(--cat-amber-text); border-color: var(--cat-amber-border); }
.lp-cat.lp-cat-tone-purple { color: var(--cat-purple-text); border-color: var(--cat-purple-border); }
.lp-cat.lp-cat-tone-pink { color: var(--cat-pink-text); border-color: var(--cat-pink-border); }
.lp-cat.lp-cat-tone-coral { color: var(--cat-coral-text); border-color: var(--cat-coral-border); }
.lp-cat.lp-cat-tone-gray { color: var(--cat-gray-text); border-color: var(--cat-gray-border); }

.lp-cat.lp-cat-tone-teal.active { background: var(--cat-teal-bg); color: var(--cat-teal-text); border-color: var(--cat-teal-border); }
.lp-cat.lp-cat-tone-blue.active { background: var(--cat-blue-bg); color: var(--cat-blue-text); border-color: var(--cat-blue-border); }
.lp-cat.lp-cat-tone-amber.active { background: var(--cat-amber-bg); color: var(--cat-amber-text); border-color: var(--cat-amber-border); }
.lp-cat.lp-cat-tone-purple.active { background: var(--cat-purple-bg); color: var(--cat-purple-text); border-color: var(--cat-purple-border); }
.lp-cat.lp-cat-tone-pink.active { background: var(--cat-pink-bg); color: var(--cat-pink-text); border-color: var(--cat-pink-border); }
.lp-cat.lp-cat-tone-coral.active { background: var(--cat-coral-bg); color: var(--cat-coral-text); border-color: var(--cat-coral-border); }
.lp-cat.lp-cat-tone-gray.active { background: var(--cat-gray-bg); color: var(--cat-gray-text); border-color: var(--cat-gray-border); }

.lp-point-chip.lp-cat-tone-teal,
.lp-badge.lp-cat-tone-teal {
  background: var(--cat-teal-bg);
  color: var(--cat-teal-text);
  border-color: var(--cat-teal-border);
}
.lp-point-chip.lp-cat-tone-blue,
.lp-badge.lp-cat-tone-blue {
  background: var(--cat-blue-bg);
  color: var(--cat-blue-text);
  border-color: var(--cat-blue-border);
}
.lp-point-chip.lp-cat-tone-amber,
.lp-badge.lp-cat-tone-amber {
  background: var(--cat-amber-bg);
  color: var(--cat-amber-text);
  border-color: var(--cat-amber-border);
}
.lp-point-chip.lp-cat-tone-purple,
.lp-badge.lp-cat-tone-purple {
  background: var(--cat-purple-bg);
  color: var(--cat-purple-text);
  border-color: var(--cat-purple-border);
}
.lp-point-chip.lp-cat-tone-pink,
.lp-badge.lp-cat-tone-pink {
  background: var(--cat-pink-bg);
  color: var(--cat-pink-text);
  border-color: var(--cat-pink-border);
}
.lp-point-chip.lp-cat-tone-coral,
.lp-badge.lp-cat-tone-coral {
  background: var(--cat-coral-bg);
  color: var(--cat-coral-text);
  border-color: var(--cat-coral-border);
}
.lp-point-chip.lp-cat-tone-gray,
.lp-badge.lp-cat-tone-gray {
  background: var(--cat-gray-bg);
  color: var(--cat-gray-text);
  border-color: var(--cat-gray-border);
}

.lp-precis-search-hit.lp-cat-tone-teal { border-left-color: var(--cat-teal-border); }
.lp-precis-search-hit.lp-cat-tone-blue { border-left-color: var(--cat-blue-border); }
.lp-precis-search-hit.lp-cat-tone-amber { border-left-color: var(--cat-amber-border); }
.lp-precis-search-hit.lp-cat-tone-purple { border-left-color: var(--cat-purple-border); }
.lp-precis-search-hit.lp-cat-tone-pink { border-left-color: var(--cat-pink-border); }
.lp-precis-search-hit.lp-cat-tone-coral { border-left-color: var(--cat-coral-border); }
.lp-precis-search-hit.lp-cat-tone-gray { border-left-color: var(--cat-gray-border); }
.lp-precis-search-cat.lp-cat-tone-teal { color: var(--cat-teal-text); }
.lp-precis-search-cat.lp-cat-tone-blue { color: var(--cat-blue-text); }
.lp-precis-search-cat.lp-cat-tone-amber { color: var(--cat-amber-text); }
.lp-precis-search-cat.lp-cat-tone-purple { color: var(--cat-purple-text); }
.lp-precis-search-cat.lp-cat-tone-pink { color: var(--cat-pink-text); }
.lp-precis-search-cat.lp-cat-tone-coral { color: var(--cat-coral-text); }
.lp-precis-search-cat.lp-cat-tone-gray { color: var(--cat-gray-text); }

.lp-tab.lp-lv-A1.active { background: var(--lv-a1); color: var(--site-on-accent); border-color: transparent; }
.lp-tab.lp-lv-A2.active { background: var(--lv-a2); color: var(--site-on-accent); border-color: transparent; }
.lp-tab.lp-lv-B1.active { background: var(--lv-b1); color: var(--site-on-accent); border-color: transparent; }
.lp-tab.lp-lv-B2.active { background: var(--lv-b2); color: var(--site-on-accent); border-color: transparent; }
.lp-tab.lp-lv-C1.active { background: var(--lv-c1); color: var(--site-on-accent); border-color: transparent; }
.lp-tab.lp-lv-C2.active { background: var(--lv-c2); color: var(--site-on-accent); border-color: transparent; }
.lp-precis-search-lv.lp-lv-A1 { background: var(--lv-a1); color: var(--site-on-accent); }
.lp-precis-search-lv.lp-lv-A2 { background: var(--lv-a2); color: var(--site-on-accent); }
.lp-precis-search-lv.lp-lv-B1 { background: var(--lv-b1); color: var(--site-on-accent); }
.lp-precis-search-lv.lp-lv-B2 { background: var(--lv-b2); color: var(--site-on-accent); }
.lp-precis-search-lv.lp-lv-C1 { background: var(--lv-c1); color: var(--site-on-accent); }
.lp-precis-search-lv.lp-lv-C2 { background: var(--lv-c2); color: var(--site-on-accent); }