gw-svelte/src/lib/components/ui/ModalShell.svelte

<script lang="ts">
  import { onMount } from 'svelte';

  export let onClose: () => void;
  export let ariaLabel: string | undefined = undefined;
  export let ariaLabelledBy: string | undefined = undefined;

  let hasMounted = false;

  function portalToBody(node: HTMLElement) {
    document.body.appendChild(node);

    return {
      destroy() {
        node.remove();
      }
    };
  }

  function handleKeydown(event: KeyboardEvent) {
    if (event.key === 'Escape') onClose();
  }

  onMount(() => {
    hasMounted = true;
  });
</script>

{#if hasMounted}
  <div
    use:portalToBody
    class="modal-backdrop"
    role="dialog"
    aria-modal="true"
    aria-label={ariaLabel}
    aria-labelledby={ariaLabelledBy}
    on:click|self={onClose}
    on:keydown={handleKeydown}
    tabindex="-1"
  >
    <div class="modal-card">
      <button class="modal-close" type="button" aria-label="Close" on:click={onClose}>
        &#x2715;
      </button>
      <slot />
    </div>
  </div>
{/if}

<style>
  .modal-backdrop {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    background: rgba(10, 20, 10, 0.55);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    animation: backdrop-in 0.25s ease;
  }

  .modal-card {
    position: relative;
    width: 100%;
    max-width: 480px;
    padding: 52px 48px 44px;
    background: #fff;
    border-radius: 24px;
    box-shadow: 0 24px 80px rgba(10, 20, 10, 0.22);
    text-align: center;
    animation: card-in 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  }

  .modal-close {
    position: absolute;
    top: 18px;
    right: 20px;
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 50%;
    background: #f2f2f0;
    color: #888;
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition:
      background 0.15s ease,
      color 0.15s ease;
  }

  .modal-close:hover {
    background: #e8e8e4;
    color: #333;
  }

  @keyframes backdrop-in {
    from { opacity: 0; }
    to   { opacity: 1; }
  }

  @keyframes card-in {
    from { opacity: 0; transform: scale(0.88) translateY(16px); }
    to   { opacity: 1; transform: scale(1) translateY(0); }
  }

  @keyframes bounce-in {
    from { opacity: 0; transform: scale(0.4); }
    to   { opacity: 1; transform: scale(1); }
  }

  @media (max-width: 480px) {
    .modal-card {
      padding: 44px 28px 32px;
    }
  }
</style>