/* Phase 11: per-sub-idea clickable rule-builder UI.
   - subidea-chip: clickable button version of subIdea (replaces static-pill when rules exist).
   - subidea-mode-toggle: small segmented control (inline | modal) in the <h3>.
   - subidea-inline-panel: rule list that expands inline below the chip row in inline mode.
   - subidea-rule: each rule line as a button. Click appends to a builder section.
   - subidea-modal: native <dialog id="subidea-modal"> used in modal mode.
   - All theme parity via CSS vars; light defaults + [data-theme="dark"] overrides. */

/* ---------- subidea-chip (button variant of subIdea) ---------- */
.subidea-chip {
  display: inline-block;
  padding: 3px 10px;
  margin: 0 4px 4px 0;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 12px;
  font-weight: 600;
  color: var(--ink);
  background: var(--chip-navy);
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  letter-spacing: 0.02em;
  transition: background 120ms ease, color 120ms ease, border-color 120ms ease;
}
.subidea-chip:hover {
  background: var(--chip-mint);
  border-color: var(--ink);
}
.subidea-chip:focus-visible {
  outline: 2px solid var(--chip-navy);
  outline-offset: 2px;
}
.subidea-chip[aria-pressed="true"] {
  background: var(--chip-red);
  color: #fff;
}

/* ---------- subidea-mode-toggle (segmented control in <h3>) ---------- */
.subidea-mode-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-left: 12px;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 11px;
  vertical-align: middle;
}
.subidea-mode-btn {
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  letter-spacing: 0.04em;
}
.subidea-mode-btn[aria-pressed="true"] {
  background: var(--chip-navy);
  color: #fff;
  border-color: var(--chip-navy);
}
.subidea-mode-btn:focus-visible {
  outline: 2px solid var(--chip-navy);
  outline-offset: 2px;
}

/* ---------- subidea-inline-panel (rule list) ---------- */
.subidea-inline-panel {
  margin-top: 8px;
  padding: 8px 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.subidea-inline-panel[hidden] { display: none; }

/* ---------- subidea-rule (each rule button) ---------- */
.subidea-rule {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  padding: 8px 10px;
  text-align: left;
  font-family: "Charter", Georgia, serif;
  font-size: 14px;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  transition: background 120ms ease, border-color 120ms ease;
}
.subidea-rule:hover {
  background: var(--chip-mint);
  border-color: var(--chip-navy);
}
.subidea-rule:focus-visible {
  outline: 2px solid var(--chip-navy);
  outline-offset: 2px;
}
.subidea-rule-line { flex: 1 1 auto; }
.subidea-rule-meta {
  flex: 0 0 auto;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.04em;
  padding: 2px 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
}
.subidea-rule.subidea-rule-added,
.subidea-rule.subidea-rule-added:hover {
  background: var(--chip-mint);
  border-color: var(--chip-navy);
  animation: subidea-rule-flash 800ms ease;
}
@keyframes subidea-rule-flash {
  0%   { transform: scale(1); box-shadow: 0 0 0 0 var(--chip-navy); }
  30%  { transform: scale(1.02); box-shadow: 0 0 0 3px var(--chip-navy); }
  100% { transform: scale(1); box-shadow: 0 0 0 0 transparent; }
}
.subidea-empty {
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 12px;
  color: var(--muted);
  font-style: italic;
  padding: 4px 0;
}

/* ---------- subidea-modal ---------- */
dialog.subidea-modal {
  width: min(720px, 92vw);
  max-height: 80vh;
  padding: 18px 20px;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: var(--bg);
  color: var(--ink);
  box-shadow: 0 6px 32px rgba(0, 0, 0, 0.18);
  font-family: ui-sans-serif, system-ui, sans-serif;
}
dialog.subidea-modal::backdrop {
  background: rgba(20, 20, 26, 0.45);
}
.subidea-modal-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--ink);
}
.subidea-modal-meta {
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 14px;
}
.subidea-modal-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 50vh;
  overflow-y: auto;
  padding: 4px 0;
}
.subidea-modal-close {
  display: block;
  margin: 14px auto 0 auto;
  padding: 6px 14px;
  font-size: 12px;
  background: var(--chip-navy);
  color: #fff;
  border: 1px solid var(--chip-navy);
  border-radius: 4px;
  cursor: pointer;
}
.subidea-modal-close:hover {
  background: var(--chip-red);
  border-color: var(--chip-red);
}

/* ---------- dark-mode parity ---------- */
[data-theme="dark"] .subidea-mode-btn {
  color: var(--muted);
  border-color: var(--border);
}
[data-theme="dark"] .subidea-rule {
  background: var(--surface);
  border-color: var(--border);
}
[data-theme="dark"] .subidea-rule-meta {
  background: var(--bg);
  border-color: var(--border);
  color: var(--muted);
}
[data-theme="dark"] dialog.subidea-modal {
  border-color: var(--border-strong);
  box-shadow: 0 6px 32px rgba(0, 0, 0, 0.45);
}

/* ---------- responsive (<720px) ---------- */
@media (max-width: 720px) {
  .subidea-rule { font-size: 13px; padding: 7px 9px; }
  .subidea-rule-meta { font-size: 10px; }
  .subidea-mode-toggle { margin-left: 8px; }
  dialog.subidea-modal { width: 96vw; }
}