/* Stage110_9 split stylesheet: app shell, rail, toolbar, and shared panel layout (from rail-signal-calendar-v82.css lines 177-720) */

    .layout {
      display: grid;
      grid-template-columns: 272px minmax(0, 2.55fr) 390px;
      gap: 16px;
      align-items: start;
    }

    .panel {
      padding: 16px;
    }

    .rail-panel {
      position: sticky;
      top: 12px;
      align-self: start;
      display: grid;
      gap: 14px;
      padding: 14px;
      overflow: visible;
      min-width: 0;
    }

    .rail-panel > * {
      min-width: 0;
    }

    .rail-section {
      border: 1px solid var(--line);
      border-radius: 18px;
      background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(248,250,252,0.96));
      padding: 14px;
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.8);
      min-width: 0;
    }

    .rail-head,
    .rail-section-top {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 10px;
    }

    .rail-title,
    .rail-section-title {
      margin: 4px 0 0;
      font-size: 18px;
      font-weight: 650;
      letter-spacing: -0.02em;
    }


    .mini-calendar-section {
      padding: 12px 12px 12px;
    }

    .mini-calendar-section .rail-head {
      align-items: flex-start;
      gap: 8px;
      margin-bottom: 6px;
    }

    .mini-calendar-section .detail-kicker {
      margin-bottom: 2px;
    }

    .mini-calendar-section .rail-title {
      margin: 0;
      font-size: 16px;
      line-height: 1.2;
      letter-spacing: -0.02em;
      white-space: nowrap;
    }

    .mini-nav {
      display: flex;
      align-items: center;
      gap: 5px;
      flex-wrap: nowrap;
      justify-content: flex-end;
      flex: 0 0 auto;
    }

    .mini-nav-btn,
    .mini-today-btn,
    .rail-link-btn {
      min-height: 32px;
      padding: 0 11px;
      border-radius: 999px;
    }

    .mini-nav-btn {
      width: 32px;
      padding: 0;
      display: inline-grid;
      place-items: center;
      font-size: 17px;
      line-height: 1;
    }

    .event-modal {
      width: min(688px, 100%);
      padding: 18px;
    }

    .event-modal .modal-top {
      margin-bottom: 16px;
    }

    .event-modal h3 {
      font-size: 22px;
    }

    .event-modal .form-grid {
      gap: 12px;
    }

    .event-modal textarea {
      min-height: 108px;
    }

    .event-modal {
      --event-modal-control-height: 58px;
      --event-modal-control-radius: 16px;
    }

    .event-modal .form-row > input[type="date"],
    .event-modal .time-text-proxy,
    .event-modal .time-picker-toggle {
      min-height: var(--event-modal-control-height);
      height: var(--event-modal-control-height);
      border-radius: var(--event-modal-control-radius);
    }

    .event-modal .form-row > input[type="date"] {
      width: 100%;
      padding-block: 0;
      padding-inline: 16px 44px;
      line-height: 1.28;
    }

    .event-modal .time-field-head {
      min-height: 22px;
      align-items: center;
    }

    .event-modal .time-field-body,
    .event-modal .time-proxy-shell {
      align-items: stretch;
    }

    .event-modal .time-text-proxy,
    .event-modal .time-picker-toggle {
      padding-block: 0;
    }

    .event-modal .time-text-proxy {
      padding-inline: 16px;
      line-height: 1.3;
    }

    .event-modal .time-picker-toggle {
      min-width: 76px;
      padding-inline: 16px;
      line-height: 1.2;
    }

    .event-modal label[for="startDateInput"],
    .event-modal label[for="endDateInput"] {
      min-height: 22px;
      display: flex;
      align-items: center;
      padding-top: 1px;
    }

    .event-modal input#startDateInput,
    .event-modal input#endDateInput {
      margin-top: 2px;
    }

    .event-modal .end-time-head-option {
      min-height: 24px;
      align-self: center;
      gap: 10px;
      white-space: nowrap;
    }

    .event-modal .end-time-head-option input[type="checkbox"] {
      width: 20px;
      height: 20px;
    }

    #calendarTargetRow {
      display: none !important;
    }


    .mini-weekdays,
    .mini-grid {
      display: grid;
      grid-template-columns: repeat(7, minmax(0, 1fr));
      gap: 4px;
      width: 100%;
      margin-inline: auto;
    }

    .mini-weekdays {
      margin-bottom: 4px;
    }

    .mini-weekdays div {
      text-align: center;
      font-size: 11px;
      font-weight: 700;
      color: var(--muted-2);
      padding: 2px 0;
    }

    .mini-weekdays .weekend-label {
      color: var(--weekend);
    }

    .mini-day {
      position: relative;
      height: 34px;
      border: 1px solid transparent;
      border-radius: 12px;
      background: transparent;
      color: var(--text);
      cursor: pointer;
      transition: background 0.14s ease, border-color 0.14s ease, transform 0.14s ease, color 0.14s ease;
      display: grid;
      place-items: center;
      font-size: 12px;
      font-weight: 600;
      letter-spacing: -0.01em;
    }

    .mini-day:hover {
      background: rgba(26, 115, 232, 0.06);
      border-color: rgba(210, 227, 252, 0.9);
    }

    .mini-day.outside {
      color: var(--other-month-text);
      background: linear-gradient(180deg, rgba(241, 244, 248, 0.92), rgba(248, 250, 253, 0.92));
    }

    .mini-day.weekend {
      color: var(--holiday);
    }

    .mini-day.today {
      border-color: rgba(26, 115, 232, 0.22);
      color: var(--primary);
      background: rgba(26, 115, 232, 0.08);
    }

    .mini-day.selected {
      background: linear-gradient(180deg, var(--primary), var(--primary-strong));
      color: #fff;
      border-color: transparent;
      box-shadow: 0 8px 16px rgba(26, 115, 232, 0.24);
    }

    .mini-day.has-events::after {
      content: "";
      position: absolute;
      bottom: 4px;
      left: 50%;
      width: 5px;
      height: 5px;
      border-radius: 50%;
      background: currentColor;
      transform: translateX(-50%);
      opacity: 0.72;
    }

    .mini-day.selected.has-events::after {
      background: rgba(255,255,255,0.92);
      opacity: 1;
    }

    .rail-helper {
      margin-top: 12px;
      padding: 10px 11px;
      border-radius: 14px;
      background: rgba(232, 240, 254, 0.66);
      border: 1px solid rgba(210, 227, 252, 0.95);
      color: #41628c;
      font-size: 12px;
      line-height: 1.5;
    }

    .upcoming-list {
      margin-top: 12px;
      display: grid;
      gap: 8px;
    }

    .upcoming-item {
      display: grid;
      grid-template-columns: 12px minmax(0, 1fr);
      gap: 10px;
      padding: 10px 11px;
      border: 1px solid var(--line);
      border-radius: 14px;
      background: rgba(255,255,255,0.92);
      cursor: pointer;
      transition: transform 0.14s ease, border-color 0.14s ease, box-shadow 0.14s ease;
      text-align: left;
    }

    .upcoming-item:hover {
      transform: translateY(-1px);
      border-color: rgba(210, 227, 252, 0.95);
      box-shadow: 0 10px 20px rgba(32, 33, 36, 0.08);
    }

    .upcoming-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      margin-top: 4px;
      box-shadow: 0 0 0 4px var(--upcoming-soft, rgba(26, 115, 232, 0.12));
    }

    .upcoming-main {
      min-width: 0;
    }

    .upcoming-title {
      font-size: 13px;
      font-weight: 650;
      line-height: 1.35;
      margin-bottom: 3px;
      color: var(--text);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .upcoming-meta {
      font-size: 12px;
      color: var(--muted);
      line-height: 1.45;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .upcoming-empty {
      color: var(--muted);
      font-size: 13px;
      line-height: 1.55;
      padding: 10px 2px 2px;
    }

    .side-panel {
      position: sticky;
      top: 12px;
      align-self: start;
      overflow: hidden;
    }

    .toolbar-shell {
      margin-bottom: 14px;
      padding: 2px;
      border-radius: 18px;
      background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(247,249,252,0.98));
      border: 1px solid rgba(226, 229, 234, 0.95);
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.72);
    }

    .toolbar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      flex-wrap: wrap;
      padding: 8px 10px;
    }

    .toolbar-left, .toolbar-right {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-wrap: wrap;
    }

    .nav-group {
      display: flex;
      align-items: center;
      gap: 6px;
      padding: 4px;
      border-radius: 999px;
      background: rgba(241, 243, 244, 0.92);
      border: 1px solid rgba(226, 229, 234, 0.9);
    }

    .nav-btn, .ghost-btn, .primary-btn, .danger-btn, .day-add-btn {
      border: 1px solid transparent;
      border-radius: 999px;
      cursor: pointer;
      transition: background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease, color 0.15s ease, transform 0.15s ease;
    }

    .nav-btn, .ghost-btn {
      background: #fff;
      color: var(--text);
      border-color: var(--panel-border);
      padding: 9px 14px;
      white-space: nowrap;
    }

    .nav-btn:hover, .ghost-btn:hover {
      background: var(--soft);
    }

    .nav-btn:active, .ghost-btn:active, .primary-btn:active, .danger-btn:active {
      transform: translateY(1px);
    }

    .icon-btn {
      width: 38px;
      height: 38px;
      padding: 0;
      display: grid;
      place-items: center;
      font-size: 20px;
      line-height: 1;
      border: none;
      background: transparent;
    }

    .today-btn {
      border: none;
      background: transparent;
      font-weight: 600;
      padding-inline: 14px;
    }

    .month-title {
      margin-left: 4px;
      font-size: 31px;
      font-weight: 500;
      line-height: 1;
      letter-spacing: -0.03em;
    }

    .month-meta {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      min-height: 34px;
      padding: 0 12px;
      border-radius: 999px;
      border: 1px solid rgba(226, 229, 234, 0.94);
      background: rgba(255, 255, 255, 0.9);
      color: var(--muted);
      font-size: 12px;
      font-weight: 500;
      letter-spacing: -0.01em;
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.75);
      white-space: nowrap;
    }

    .month-meta strong {
      color: var(--text);
      font-size: 12px;
      font-weight: 700;
    }

    .month-meta-label {
      color: var(--muted);
    }

    .month-meta-divider {
      color: #c1c7d0;
    }

    .month-meta-shortcut {
      padding: 3px 7px;
      border-radius: 999px;
      background: var(--soft);
      color: var(--muted-2);
      font-size: 11px;
      font-weight: 600;
      line-height: 1;
    }

    .search-shell {
      display: flex;
      align-items: center;
      gap: 8px;
      min-width: 270px;
      padding: 0 12px;
      border: 1px solid var(--panel-border);
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.94);
      min-height: 42px;
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.85);
    }

    .search-shell:focus-within {
      border-color: #b8cdf8;
      box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.12);
    }

    .search-icon {
      color: var(--muted-2);
      font-size: 14px;
      flex: none;
    }

    .top-search {
      min-width: 0;
      width: 100%;
      border: none;
      padding: 0;
      background: transparent;
      color: var(--text);
      outline: none;
    }

    .primary-btn {
      background: linear-gradient(180deg, var(--primary), var(--primary-strong));
      color: #fff;
      box-shadow: 0 8px 16px rgba(26, 115, 232, 0.18);
      padding: 10px 16px;
    }

    .primary-btn:hover {
      filter: brightness(1.02);
      box-shadow: 0 10px 20px rgba(26, 115, 232, 0.22);
    }

    .danger-btn {
      background: var(--danger-soft);
      color: var(--danger);
      border-color: #fad2cf;
      padding: 9px 14px;
    }