Border Draw Button

---
/**
 * BorderDrawButton — A button that animates its SVG border being drawn on hover.
 * 
 * @param {string} href - Optional. If provided, renders an <a> tag instead of <button>.
 * @param {'button'|'submit'|'reset'} type - Optional. The HTML button type. Default is 'button'.
 * @param {string} color - Optional. The stroke color of the drawing border. Default is '#3b82f6'.
 * @param {'sm'|'md'|'lg'} size - Optional. The size variant of the button. Default is 'md'.
 * @param {boolean} disabled - Optional. Whether the button is disabled. Default is false.
 */
interface Props {
  href?: string;
  type?: 'button' | 'submit' | 'reset';
  color?: string;
  size?: 'sm' | 'md' | 'lg';
  disabled?: boolean;
}

const { 
  href, 
  type = 'button', 
  color = '#6366f1',
  size = 'md',
  disabled = false 
} = Astro.props;

const Tag = href ? 'a' : 'button';
---

<Tag 
  href={href} 
  type={href ? undefined : type}
  disabled={disabled}
  class={`draw-btn draw-btn--${size}`}
  style={`--btn-color: ${color}`}
>
  <span class="draw-btn__text"><slot /></span>
</Tag>

<style>
  .draw-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    color: var(--c-text-2, #94a3b8);
    border: 2px solid rgba(255, 255, 255, 0.05);
    cursor: pointer;
    text-decoration: none;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 600;
    user-select: none;
    white-space: nowrap;
    font-family: var(--font-sans, inherit);
  }

  .draw-btn__text {
    position: relative;
    z-index: 2;
    transition: color 0.5s ease;
  }

  .draw-btn::before,
  .draw-btn::after {
    content: '';
    position: absolute;
    width: 0;
    height: 0;
    border: 2px solid transparent;
    z-index: 1;
    transition: width 0.2s 0.2s ease-out, height 0.2s ease-out, border-color 0.1s;
  }

  .draw-btn::before {
    top: -2px;
    left: -2px;
  }

  .draw-btn::after {
    bottom: -2px;
    right: -2px;
  }

  .draw-btn:hover:not(:disabled) {
    color: #fff;
    border-color: transparent;
  }

  .draw-btn:hover:not(:disabled)::before {
    width: calc(100% + 4px);
    height: calc(100% + 4px);
    border-top-color: var(--btn-color);
    border-right-color: var(--btn-color);
    transition: width 0.2s ease-out, height 0.2s 0.2s ease-out;
  }

  .draw-btn:hover:not(:disabled)::after {
    width: calc(100% + 4px);
    height: calc(100% + 4px);
    border-bottom-color: var(--btn-color);
    border-left-color: var(--btn-color);
    transition: width 0.2s ease-out, height 0.2s 0.2s ease-out;
  }

  .draw-btn:active:not(:disabled) {
    transform: scale(0.98);
  }

  .draw-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    filter: grayscale(1);
  }

  /* Sizes */
  .draw-btn--sm { padding: 0.45rem 1.2rem; font-size: 0.85rem; }
  .draw-btn--md { padding: 0.75rem 1.8rem; font-size: 1rem; }
  .draw-btn--lg { padding: 1.1rem 2.5rem; font-size: 1.2rem; }
</style>