<script setup lang="ts">
import { computed, ref } from "vue";

const props = withDefaults(
  defineProps<{
    accent?: string;
    label?: string;
    inset?: number;
    pressScale?: number;
    radius?: number;
  }>(),
  { accent: "#7C5CFF", label: "Publish", inset: 5, pressScale: 0.67, radius: 10 },
);

const pressed = ref(false);

function tint(hex: string, alpha: number, dim = 1): string {
  const value = hex.replace("#", "");
  const full = value.length === 3 ? value.split("").map((c) => c + c).join("") : value;
  const num = Number.parseInt(full, 16);
  const r = Math.round(((num >> 16) & 255) * dim);
  const g = Math.round(((num >> 8) & 255) * dim);
  const b = Math.round((num & 255) * dim);
  return `rgba(${r}, ${g}, ${b}, ${alpha})`;
}

const vars = computed(() => ({
  "--plate-shell": tint(props.accent, 0.35),
  "--plate-shell-line": "rgba(255, 255, 255, 0.18)",
  "--plate-shell-line-hover": "rgba(255, 255, 255, 0.5)",
  "--plate-core": tint(props.accent, 0.55, 0.8),
  "--plate-core-hover": tint(props.accent, 0.62, 0.72),
  "--plate-core-pressed": tint(props.accent, 0.72, 0.62),
  "--plate-radius": props.radius + "px",
  "--plate-inset": props.inset + "px",
  "--plate-press-scale": String(props.pressScale),
}));

function onKeyDown(event: KeyboardEvent) {
  if (event.key === " " || event.key === "Enter") pressed.value = true;
}
function onKeyUp(event: KeyboardEvent) {
  if (event.key === " " || event.key === "Enter") pressed.value = false;
}
</script>

<template>
  <button
    type="button"
    class="plate-button"
    :class="{ 'plate-button--pressed': pressed }"
    :style="vars"
    @pointerdown="pressed = true"
    @pointerup="pressed = false"
    @pointercancel="pressed = false"
    @pointerleave="pressed = false"
    @keydown="onKeyDown"
    @keyup="onKeyUp"
    @blur="pressed = false"
  >
    <span class="plate-button__plate"><span class="plate-button__label">{{ label }}</span></span>
  </button>
</template>

<style scoped>
.plate-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--plate-inset);
  border: 1px solid var(--plate-shell-line);
  border-radius: var(--plate-radius);
  background: var(--plate-shell);
  box-shadow: 0 6px 18px rgb(0 0 0 / 0.35);
  cursor: pointer;
  user-select: none;
  outline: none;
  transition: border-color 150ms ease;
}
.plate-button:hover,
.plate-button:focus-visible {
  border-color: var(--plate-shell-line-hover);
}
.plate-button:focus-visible {
  box-shadow: 0 6px 18px rgb(0 0 0 / 0.35), 0 0 0 2px var(--plate-core-hover);
}
.plate-button__plate {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 11px 26px;
  border-radius: var(--plate-radius);
  background: var(--plate-core);
  transform: scale(1);
  transition:
    transform 110ms cubic-bezier(0.34, 1.56, 0.64, 1),
    background-color 150ms ease;
}
.plate-button:hover .plate-button__plate,
.plate-button:focus-visible .plate-button__plate {
  background: var(--plate-core-hover);
}
.plate-button--pressed .plate-button__plate {
  transform: scale(var(--plate-press-scale));
  transition-duration: 90ms;
}
.plate-button__label {
  font: 700 20px/1.3 system-ui, sans-serif;
  color: #f2f3f5;
}
@media (prefers-reduced-motion: reduce) {
  .plate-button--pressed .plate-button__plate {
    transform: none;
    background: var(--plate-core-pressed);
    transition: background-color 1ms;
  }
}
</style>

1f:Tcb1, 20:Tb0ec,

<script lang="ts">
  let { accent = "#7C5CFF", label = "Publish", inset = 5, pressScale = 0.67, radius = 10 } = $props();

  let pressed = $state(false);

  function tint(hex: string, alpha: number, dim = 1): string {
    const value = hex.replace("#", "");
    const full = value.length === 3 ? value.split("").map((c) => c + c).join("") : value;
    const num = Number.parseInt(full, 16);
    const r = Math.round(((num >> 16) & 255) * dim);
    const g = Math.round(((num >> 8) & 255) * dim);
    const b = Math.round((num & 255) * dim);
    return `rgba(${r}, ${g}, ${b}, ${alpha})`;
  }

  const vars = $derived(
    `--plate-shell: ${tint(accent, 0.35)};` +
      ` --plate-shell-line: rgba(255, 255, 255, 0.18);` +
      ` --plate-shell-line-hover: rgba(255, 255, 255, 0.5);` +
      ` --plate-core: ${tint(accent, 0.55, 0.8)};` +
      ` --plate-core-hover: ${tint(accent, 0.62, 0.72)};` +
      ` --plate-core-pressed: ${tint(accent, 0.72, 0.62)};` +
      ` --plate-radius: ${radius}px;` +
      ` --plate-inset: ${inset}px;` +
      ` --plate-press-scale: ${pressScale};`,
  );

  function handleKey(event: KeyboardEvent, down: boolean) {
    if (event.key === " " || event.key === "Enter") pressed = down;
  }
</script>

<button
  type="button"
  class="plate-button"
  class:pressed
  style={vars}
  onpointerdown={() => (pressed = true)}
  onpointerup={() => (pressed = false)}
  onpointercancel={() => (pressed = false)}
  onpointerleave={() => (pressed = false)}
  onkeydown={(event) => handleKey(event, true)}
  onkeyup={(event) => handleKey(event, false)}
  onblur={() => (pressed = false)}
>
  <span class="plate-button__plate"><span class="plate-button__label">{label}</span></span>
</button>

<style>
  .plate-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--plate-inset);
    border: 1px solid var(--plate-shell-line);
    border-radius: var(--plate-radius);
    background: var(--plate-shell);
    box-shadow: 0 6px 18px rgb(0 0 0 / 0.35);
    cursor: pointer;
    user-select: none;
    outline: none;
    transition: border-color 150ms ease;
  }
  .plate-button:hover,
  .plate-button:focus-visible {
    border-color: var(--plate-shell-line-hover);
  }
  .plate-button:focus-visible {
    box-shadow: 0 6px 18px rgb(0 0 0 / 0.35), 0 0 0 2px var(--plate-core-hover);
  }
  .plate-button__plate {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 11px 26px;
    border-radius: var(--plate-radius);
    background: var(--plate-core);
    transform: scale(1);
    transition:
      transform 110ms cubic-bezier(0.34, 1.56, 0.64, 1),
      background-color 150ms ease;
  }
  .plate-button:hover .plate-button__plate,
  .plate-button:focus-visible .plate-button__plate {
    background: var(--plate-core-hover);
  }
  .pressed .plate-button__plate {
    transform: scale(var(--plate-press-scale));
    transition-duration: 90ms;
  }
  .plate-button__label {
    font: 700 20px/1.3 system-ui, sans-serif;
    color: #f2f3f5;
  }
  @media (prefers-reduced-motion: reduce) {
    .pressed .plate-button__plate {
      transform: none;
      background: var(--plate-core-pressed);
      transition: background-color 1ms;
    }
  }
</style>

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