/* kr-captcha.css: pixel "human check" (BlogCaptcha + kr-captcha.js).
   A dot-matrix panel: magenta pixels on a sunken screen with scanlines,
   a cyan ghost painted by the canvas, and a pixel-font code input. */

.kr-captcha {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 10px;
  margin: 10px 0 0;
  min-width: 0;
}

/* Inside the grid composers, take the full row under the textarea. */
.reader-comment-composer .kr-captcha,
.reader-reply-composer .kr-captcha { grid-column: 1 / -1; }

.kr-captcha-tag {
  font-family: var(--io-font-pixel);
  font-size: var(--io-fs-micro);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--io-text-tertiary);
}
.kr-captcha-tag i { color: var(--io-accent); margin-right: 4px; }

.kr-captcha-screen {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: 280px;
  height: 76px;
  padding: 2px;
  border: 1px solid var(--io-border);
  background: var(--io-surface-sunken);
  box-shadow: inset 0 0 18px rgba(255, 0, 93, 0.08);
  overflow: hidden;
}
.kr-captcha-screen::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(180deg, rgba(255, 255, 255, 0.04) 0 1px, transparent 1px 3px);
}
.kr-captcha-screen canvas {
  display: block;
  width: 276px;
  height: 72px;
  image-rendering: pixelated;
  filter: drop-shadow(0 0 4px rgba(255, 0, 93, 0.55));
  opacity: 0;
  transition: opacity 0.18s ease;
}
.kr-captcha.is-ready .kr-captcha-screen canvas { opacity: 1; }
.kr-captcha-idle {
  position: absolute;
  font-family: var(--io-font-mono);
  font-size: var(--io-fs-micro);
  color: var(--io-text-tertiary);
}
.kr-captcha.is-ready .kr-captcha-idle { display: none; }
.kr-captcha.is-loading .kr-captcha-idle::after { content: " …"; }

.kr-captcha-new {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--io-border);
  background: transparent;
  color: var(--io-text-secondary);
  cursor: pointer;
}
.kr-captcha-new:hover { border-color: var(--io-accent-dim); color: var(--io-accent-bright); }
.kr-captcha.is-loading .kr-captcha-new i { animation: kr-captcha-spin 0.7s linear infinite; }
@keyframes kr-captcha-spin { to { transform: rotate(360deg); } }

.kr-captcha-input {
  width: 9.5ch;
  height: 34px;
  padding: 0 10px;
  border: 1px solid var(--io-border);
  background: var(--io-surface-base);
  color: var(--io-accent-bright);
  font-family: var(--io-font-pixel);
  font-size: var(--io-fs-base);
  letter-spacing: 0.32em;
  text-transform: uppercase;
  outline: none;
}
.kr-captcha-input::placeholder { color: var(--io-text-disabled, var(--io-text-tertiary)); letter-spacing: 0.2em; }
.kr-captcha-input:focus { border-color: var(--io-accent); box-shadow: 0 0 0 1px var(--io-accent-subtle); }

.kr-captcha-msg {
  flex-basis: 100%;
  min-height: 1em;
  font-family: var(--io-font-mono);
  font-size: var(--io-fs-micro);
  color: var(--io-text-tertiary);
}
.kr-captcha-msg:empty { display: none; }
.kr-captcha-msg.err { color: var(--io-accent-bright); }

/* Honeypot: present for bots, invisible and unreachable for people. */
.kr-hp {
  position: absolute !important;
  left: -10000px !important;
  width: 1px !important;
  height: 1px !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

@media (prefers-reduced-motion: reduce) {
  .kr-captcha.is-loading .kr-captcha-new i { animation: none; }
}