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<script lang="ts">
  import { onMount, onDestroy } from "svelte";
  import { fade } from "svelte/transition";
  import gsap from "gsap";

  export let onSendMessage: (message: string) => void;
  export let visible: boolean = true;

  const examples = [
    { icon: "🏀", text: "add another ball" },
    { icon: "📝", text: "explain what the code does" },
    { icon: "🎮", text: "make a moving platform" },
    { icon: "⬆️", text: "increase the player jump height" }
  ];

  let exampleCards: HTMLButtonElement[] = [];

  onMount(() => {
    if (visible) {
      exampleCards.forEach((card, index) => {
        if (!card) return;

        gsap.fromTo(card, {
          opacity: 0,
          x: -10,
          scale: 0.95
        }, {
          opacity: 1,
          x: 0,
          scale: 1,
          duration: 0.15,
          delay: index * 0.03,
          ease: "power2.out"
        });
      });
    }
  });

  onDestroy(() => {
    exampleCards.forEach((card) => {
      if (card) {
        gsap.killTweensOf(card);
      }
    });
  });

  function handleClick(text: string) {
    onSendMessage(text);
  }

  function handleMouseEnter(event: MouseEvent) {
    const card = event.currentTarget as HTMLButtonElement;
    gsap.to(card, {
      scale: 1.05,
      duration: 0.08,
      ease: "power2.out"
    });
  }

  function handleMouseLeave(event: MouseEvent) {
    const card = event.currentTarget as HTMLButtonElement;
    gsap.to(card, {
      scale: 1,
      duration: 0.1,
      ease: "power2.out"
    });
  }

  function handleMouseDown(event: MouseEvent) {
    const card = event.currentTarget as HTMLButtonElement;
    gsap.to(card, {
      scale: 0.97,
      duration: 0.03,
      ease: "power2.in"
    });
  }

  function handleMouseUp(event: MouseEvent) {
    const card = event.currentTarget as HTMLButtonElement;
    gsap.to(card, {
      scale: 1.05,
      duration: 0.05,
      ease: "back.out(1.5)"
    });
  }
</script>

{#if visible}
  <div class="examples-row" transition:fade={{ duration: 200 }}>
    <span class="examples-label">Try an example:</span>
    <div class="examples-list">
      {#each examples as example, i}
        <button
          bind:this={exampleCards[i]}
          class="example-pill"
          on:click={() => handleClick(example.text)}
          on:mouseenter={handleMouseEnter}
          on:mouseleave={handleMouseLeave}
          on:mousedown={handleMouseDown}
          on:mouseup={handleMouseUp}
        >
          <span class="example-icon">{example.icon}</span>
          <span class="example-text">{example.text}</span>
        </button>
      {/each}
    </div>
  </div>
{/if}

<style>
  .examples-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1rem;
    background: rgba(0, 0, 0, 0.3);
    border-top: 1px solid rgba(255, 255, 255, 0.03);
  }

  .examples-label {
    font-size: 0.7rem;
    color: rgba(255, 255, 255, 0.35);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 500;
    font-family: "Monaco", "Menlo", monospace;
    flex-shrink: 0;
  }

  .examples-list {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    flex: 1;
  }

  .example-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.3rem 0.625rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    cursor: pointer;
    transition: none;
    font-family: "Monaco", "Menlo", monospace;
    font-size: 0.7rem;
    color: rgba(255, 255, 255, 0.65);
    will-change: transform, box-shadow;
    flex-shrink: 0;
    min-width: 0;
  }

  .example-pill:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.85);
  }

  .example-icon {
    font-size: 0.75rem;
    opacity: 0.8;
    flex-shrink: 0;
  }

  .example-text {
    font-size: 0.7rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  @media (max-width: 768px) {
    .examples-row {
      gap: 0.75rem;
      padding: 0.75rem;
    }

    .examples-list {
      gap: 0.4rem;
    }

    .example-pill {
      padding: 0.25rem 0.5rem;
      font-size: 0.65rem;
    }

    .example-text {
      font-size: 0.65rem;
    }
  }

  @media (max-width: 480px) {
    .examples-row {
      flex-direction: column;
      align-items: stretch;
      gap: 0.5rem;
    }

    .examples-label {
      text-align: center;
      font-size: 0.65rem;
    }

    .examples-list {
      justify-content: center;
    }

    .example-pill {
      flex: 0 1 auto;
      max-width: calc(50% - 0.25rem);
    }
  }

  @media (max-width: 360px) {
    .example-pill {
      max-width: 100%;
    }
  }
</style>