<section class="tv-webcore-dialog">
  <header class="tv-webcore-dialog-bar">
    <h3 class="tv-webcore-dialog-title">(1) system error</h3>
    <span class="tv-webcore-dialog-close" aria-hidden="true"></span>
  </header>
  <div class="tv-webcore-dialog-body">
    <p class="tv-webcore-dialog-message">The cat sat on the keyboard.</p>
    <div class="tv-webcore-dialog-actions">
      <button class="tv-webcore-dialog-button" type="button">ok</button>
      <button class="tv-webcore-dialog-button" type="button">oh, no</button>
    </div>
  </div>
</section>

/* A retro OS alert: coloured title bar, grey face, centred message and double-ruled buttons. */
.tv-webcore-dialog {
  --tv-webcore-dialog-bar: var(--tv-webcore-pink, #f7b5e4);
  --tv-webcore-dialog-bar-ink: var(--tv-webcore-navy, #2c2b9f);
  box-sizing: border-box;
  width: 100%;
  max-width: 24rem;
  margin: 0 auto;
  border: 2px solid var(--tv-webcore-lilac, #a49bf3);
  background: var(--tv-webcore-grey, #d9d9e5);
  color: var(--tv-webcore-navy, #2c2b9f);
  font-family: "Lucida Console", "Courier New", ui-monospace, monospace;
  box-shadow: 4px 4px 0 color-mix(in srgb, var(--tv-webcore-navy, #2c2b9f) 25%, transparent);
}

.tv-webcore-dialog-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  min-height: 30px;
  padding: 3px 4px 3px 10px;
  background: var(--tv-webcore-dialog-bar, #f7b5e4);
  color: var(--tv-webcore-dialog-bar-ink, #2c2b9f);
}

.tv-webcore-dialog-title {
  margin: 0;
  overflow: hidden;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-overflow: ellipsis;
  text-transform: uppercase;
  white-space: nowrap;
}

.tv-webcore-dialog-close {
  position: relative;
  flex-shrink: 0;
  box-sizing: border-box;
  width: 22px;
  height: 20px;
  border: 1px solid var(--tv-webcore-navy, #2c2b9f);
  background: var(--tv-webcore-paper, #ffffff);
}

.tv-webcore-dialog-close::before,
.tv-webcore-dialog-close::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 12px;
  height: 2px;
  background: var(--tv-webcore-navy, #2c2b9f);
  transform: translate(-50%, -50%) rotate(45deg);
}

.tv-webcore-dialog-close::after {
  transform: translate(-50%, -50%) rotate(-45deg);
}

.tv-webcore-dialog-body {
  padding: 24px 18px 20px;
  text-align: center;
}

.tv-webcore-dialog-message {
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.5;
  letter-spacing: 0.04em;
}

.tv-webcore-dialog-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

/* An inner rule inside the navy edge, like the old double-lined default button. */
.tv-webcore-dialog-button {
  min-width: 6.5rem;
  min-height: 2.5rem;
  padding: 4px 16px;
  border: 1px solid var(--tv-webcore-navy, #2c2b9f);
  background: var(--tv-webcore-pink, #f7b5e4);
  color: var(--tv-webcore-navy, #2c2b9f);
  font: inherit;
  font-size: 14px;
  letter-spacing: 0.06em;
  cursor: pointer;
  box-shadow: inset 0 0 0 3px var(--tv-webcore-pink, #f7b5e4), inset 0 0 0 4px var(--tv-webcore-navy, #2c2b9f);
}

.tv-webcore-dialog-button:hover {
  background: color-mix(in srgb, var(--tv-webcore-pink, #f7b5e4) 65%, var(--tv-webcore-paper, #ffffff));
  box-shadow: inset 0 0 0 3px color-mix(in srgb, var(--tv-webcore-pink, #f7b5e4) 65%, var(--tv-webcore-paper, #ffffff)), inset 0 0 0 4px var(--tv-webcore-navy, #2c2b9f);
}

.tv-webcore-dialog-button:active {
  transform: translate(1px, 1px);
}

.tv-webcore-dialog-button:focus-visible {
  outline: 2px dashed var(--tv-webcore-navy, #2c2b9f);
  outline-offset: 3px;
}

.tv-webcore-dialog--violet {
  --tv-webcore-dialog-bar: var(--tv-webcore-violet, #a445dd);
  --tv-webcore-dialog-bar-ink: var(--tv-webcore-paper, #ffffff);
}

.tv-webcore-dialog--lilac {
  --tv-webcore-dialog-bar: var(--tv-webcore-lilac, #a49bf3);
  --tv-webcore-dialog-bar-ink: var(--tv-webcore-navy, #2c2b9f);
}