:root {
        --font-ui: "Segoe UI", "Yu Gothic UI", "Hiragino Sans", "Meiryo", sans-serif;
        --app-shell-max-width: 860px;
        --app-shell-half-width: calc(var(--app-shell-max-width) / 2);
        --page-bg: rgb(231, 244, 242);
        --panel: #ffffff;
        --border: rgba(25, 52, 73, 0.12);
        --text: #14324b;
        --muted: #61788f;
        --accent: #0f8f7b;
        --accent-dark: #0c7464;
        --danger: #b54646;
        --danger-bg: rgba(181, 70, 70, 0.08);
        --accent-rgb: 15,143,123;
      }

      * {
        box-sizing: border-box;
      }

      [hidden] {
        display: none !important;
      }

      body {
        margin: 0;
        min-height: 100vh;
        font-family: var(--font-ui);
        color: var(--text);
        background: var(--page-bg);
        padding: 24px 16px;
        display: grid;
        place-items: start center;
      }

      .app {
        position: relative;
        --card-fixed-edge-gap: max(16px, calc(50% - var(--app-shell-half-width)));
        --top-nav-button-size: calc(38px + var(--app-font-size-offset, 0px));
        --top-nav-icon-size: calc(20px + var(--app-font-size-offset, 0px));
        --top-nav-radius: calc(12px + (var(--app-font-size-offset, 0px) / 2));
        --top-nav-ticket-font-size: calc(13px + var(--app-font-size-offset, 0px));
        --top-nav-ticket-gap: calc(4px + (var(--app-font-size-offset, 0px) / 2));
        --top-nav-ticket-padding-x: calc(8px + (var(--app-font-size-offset, 0px) / 2));
        --top-nav-top: calc(30px + var(--app-font-size-offset, 0px));
        --top-nav-side-offset: calc(8px + (var(--app-font-size-offset, 0px) / 2));
        --top-search-top: calc(72px + var(--app-font-size-offset, 0px));
        --top-search-width: calc(100px + (var(--app-font-size-offset, 0px) * 3));
        --top-search-height: calc(28px + var(--app-font-size-offset, 0px));
        --top-search-radius: calc(10px + (var(--app-font-size-offset, 0px) / 2));
        --top-search-gap: calc(6px + (var(--app-font-size-offset, 0px) / 2));
        --top-search-font-size: calc(11px + var(--app-font-size-offset, 0px));
        --top-search-padding-x: calc(9px + (var(--app-font-size-offset, 0px) / 2));
        width: min(100%, var(--app-shell-max-width));
        border-radius: 24px;
        border: 1px solid var(--border);
        background: var(--panel);
        box-shadow: 0 24px 45px rgba(21, 43, 62, 0.14);
        padding: 28px;
        min-width: 0;
      }

      .top-row {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
        flex-wrap: wrap;
        margin-top: calc(30px + var(--app-font-size-offset, 0px));
        padding-right: calc(150px + (var(--app-font-size-offset, 0px) * 3));
      }

      .top-row > h1 {
        margin-left: 8px;
      }

      h1 {
        margin: 0;
        font-size: clamp(26px, 5vw, 36px);
      }

      .top-nav {
        display: contents;
      }

      .top-nav-link {
        width: var(--top-nav-button-size);
        min-height: var(--top-nav-button-size);
        border: none;
        border-radius: var(--top-nav-radius);
        background: rgba(255, 255, 255, 0.85);
        padding: 0;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        color: var(--accent);
        text-decoration: none;
      }

      .top-nav-link:hover {
        background: rgba(var(--accent-rgb), 0.10);
      }

      .top-nav-link svg {
        width: var(--top-nav-icon-size);
        height: var(--top-nav-icon-size);
        stroke: currentColor;
        fill: none;
        stroke-width: 2;
        stroke-linecap: round;
        stroke-linejoin: round;
      }

      .ticket-nav-link {
        width: auto;
        min-width: 0;
        padding: 0 var(--top-nav-ticket-padding-x);
        gap: var(--top-nav-ticket-gap);
        font-size: var(--top-nav-ticket-font-size);
        font-weight: 700;
        white-space: nowrap;
      }

      .ticket-points {
        line-height: 1;
        font-variant-numeric: tabular-nums;
      }

      .nav-right-1 {
        position: fixed;
        top: var(--top-nav-top);
        right: calc(var(--card-fixed-edge-gap) + 86px + (var(--app-font-size-offset, 0px) * 2));
        z-index: 20;
      }

      .nav-right-2 {
        position: fixed;
        top: var(--top-nav-top);
        right: calc(var(--card-fixed-edge-gap) + 48px + var(--app-font-size-offset, 0px));
        z-index: 20;
      }

      .nav-right-3 {
        position: fixed;
        top: var(--top-nav-top);
        right: calc(var(--card-fixed-edge-gap) + var(--top-nav-side-offset));
        z-index: 20;
      }

      .back-nav-button {
        position: fixed;
        top: var(--top-nav-top);
        left: calc(var(--card-fixed-edge-gap) + var(--top-nav-side-offset));
        z-index: 20;
      }

      .back-search-form {
        position: fixed;
        top: var(--top-search-top);
        right: calc(var(--card-fixed-edge-gap) + calc(10px + (var(--app-font-size-offset, 0px) / 2)));
        z-index: 20;
        width: max-content;
        display: grid;
        grid-template-columns: var(--top-search-width) auto;
        gap: var(--top-search-gap);
        align-items: stretch;
      }

      .back-search-input {
        min-width: 0;
        width: var(--top-search-width);
        height: var(--top-search-height);
        border: 1px solid rgba(var(--accent-rgb), 0.2);
        border-radius: var(--top-search-radius);
        background: rgba(255, 255, 255, 0.96);
        padding: 0 var(--top-search-padding-x);
        font-size: var(--top-search-font-size);
        color: var(--text);
      }

      .back-search-submit {
        height: var(--top-search-height);
        border: none;
        border-radius: var(--top-search-radius);
        background: var(--accent);
        color: #ffffff;
        padding: 0 calc(10px + (var(--app-font-size-offset, 0px) / 2));
        font-size: var(--top-search-font-size);
        font-weight: 700;
        cursor: pointer;
      }

      .panel {
        --shared-card-margin-top: 16px;
        --shared-card-border: 1px solid var(--border);
        --shared-card-radius: 16px;
        --shared-card-background: #ffffff;
        --shared-card-min-width: 0;
        --shared-card-max-width: 100%;
      }

      .trash-panel-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
      }

      .list {
        list-style: none;
        margin: 0;
        padding: 12px;
        display: grid;
        gap: 10px;
        min-width: 0;
      }

      .empty {
        margin: 0;
        padding: 16px 14px;
        color: var(--muted);
      }

      .trash-summary {
        display: flex;
        flex-wrap: wrap;
        gap: 8px 14px;
        padding: 12px 12px 0;
        color: var(--muted);
        font-size: 12px;
        font-weight: 700;
        text-align: left;
      }

      .trash-summary-item {
        white-space: nowrap;
      }

      .trash-actions {
        display: flex;
        justify-content: flex-end;
        margin-left: auto;
      }

      .trash-bulk-delete-button {
        min-height: 36px;
        margin-top: 0;
      }

      .trash-entry {
        --shared-entry-padding: 12px;
        --shared-entry-border-color: rgba(var(--accent-rgb), 0.18);
        --shared-entry-radius: 12px;
        --shared-entry-bg: rgba(var(--accent-rgb), 0.08);
        --shared-entry-hover-bg: rgba(var(--accent-rgb), 0.14);
        --shared-entry-color: var(--text);
        --shared-entry-gap: 12px;
        display: grid;
        gap: 8px;
        cursor: default;
      }

      .trash-entry:hover {
        background: rgba(var(--accent-rgb), 0.08);
        border-color: rgba(var(--accent-rgb), 0.18);
        box-shadow: inset 0 0 0 var(--shared-entry-outline-width) var(--shared-entry-outline-color);
      }

      .meta-chip {
        color: var(--muted);
        font-size: 12px;
        font-weight: 700;
      }

      .trash-entry-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
      }

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

      .trash-entry-meta-value {
        color: var(--text);
      }

      .trash-entry-actions {
        display: flex;
        align-items: center;
        justify-content: flex-end;
        gap: 8px;
        flex-wrap: wrap;
      }

      .delete-event-item {
        align-items: flex-start;
      }

      .delete-event-body {
        display: grid;
        gap: 8px;
      }

      .delete-event-title-row {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        align-items: center;
      }

      .delete-event-title {
        font-weight: 700;
      }

      .delete-event-status {
        display: inline-flex;
        align-items: center;
        padding: 2px 8px;
        border-radius: 999px;
        background: #f3f4f6;
        color: #4b5563;
        font-size: 12px;
      }

      .delete-event-status.restored {
        background: #dcfce7;
        color: #166534;
      }

      .delete-event-description {
        color: #374151;
        line-height: 1.5;
      }

      .action-btn {
        border: 1px solid rgba(var(--accent-rgb), 0.24);
        background: rgba(var(--accent-rgb), 0.1);
        color: var(--accent-dark);
        border-radius: 10px;
        min-height: 32px;
        padding: 0 12px;
        font-size: 12px;
        font-weight: 700;
        cursor: pointer;
        white-space: nowrap;
      }

      .action-btn.danger {
        border-color: rgba(181, 70, 70, 0.24);
        background: var(--danger-bg);
        color: var(--danger);
      }

      .action-btn:disabled {
        opacity: 0.6;
        cursor: default;
      }

      .pagination {
        display: grid;
        justify-items: stretch;
        gap: 4px;
        padding: 12px 10px 14px;
      }

      .pagination[hidden] {
        display: none !important;
      }

      .pagination-buttons {
        display: flex;
        align-items: center;
        gap: 6px;
        flex-wrap: nowrap;
      }

      .pagination-btn {
        border: 1px solid rgba(var(--accent-rgb), 0.18);
        background: #ffffff;
        color: var(--text);
        border-radius: 6px;
        min-height: 20px;
        width: 52px;
        padding: 0 10px;
        font-size: 9px;
        font-weight: 700;
        cursor: pointer;
        flex: 0 0 52px;
        min-width: 52px;
        text-align: center;
      }

      .pagination-btn.active {
        border-color: var(--accent-dark);
        background: var(--accent);
        color: #ffffff;
      }

      .pagination-btn:disabled {
        opacity: 0.52;
        cursor: default;
      }

      .pagination-status {
        display: block;
        color: var(--muted);
        font-size: 11px;
        font-weight: 700;
        padding: 0 2px;
        text-align: center;
      }

      @media (max-width: 720px) {
        .trash-panel-header {
          align-items: stretch;
          flex-wrap: wrap;
        }

        .trash-actions {
          width: 100%;
        }

        .trash-bulk-delete-button {
          width: 100%;
        }
      }