/* Supplemental planner only: keep the verified base layout untouched. */
.event-card{min-inline-size:0;margin:18px 0;padding:16px 12px;border:1px solid var(--line);border-radius:8px;background:var(--surface)}
.event-card>summary{font-weight:600;color:var(--text);font-size:.88rem;overflow-wrap:anywhere}.event-card[open]>summary{margin-bottom:16px}
.event-card .form-grid{grid-template-columns:minmax(0,1fr)}
.event-card select,.event-card input{max-width:100%;min-width:0;width:100%}
#additionalEventDetails{margin-block:20px}#additionalEventHelp{font-size:.88rem}#additionalEventControls>a{display:block;margin-top:12px;font-size:.85rem}