/* ========== CAPTCHA OVERLAY ========== */

html.captcha-skip #captcha-overlay {
  display: none !important;
}

html.captcha-active {
  overflow: hidden;
}

html.captcha-active body > *:not(#captcha-overlay) {
  visibility: hidden !important;
  pointer-events: none !important;
  position: absolute;
  left: -99999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

#captcha-overlay {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 15, 20, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 1.5rem;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

#captcha-overlay.captcha-overlay--passed {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.captcha-box {
  width: 100%;
  max-width: 400px;
  background: var(--color-bg-elevated);
  border: 1px solid rgba(99, 102, 241, 0.25);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.03);
  animation: captcha-appear 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes captcha-appear {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.captcha-box__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 1.25rem;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(99, 102, 241, 0.05));
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-size: 1.5rem;
}

.captcha-box__title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-white);
  text-align: center;
  margin-bottom: 0.5rem;
}

.captcha-box__subtitle {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  text-align: center;
  margin-bottom: 1.75rem;
}

/* Slider */
.captcha-slider {
  position: relative;
  height: 52px;
  background: var(--color-bg-alt);
  border: 1px solid rgba(63, 63, 70, 0.8);
  border-radius: var(--radius-md);
  overflow: hidden;
  user-select: none;
}

.captcha-slider__track {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(99, 102, 241, 0.15) 0%, transparent 100%);
  width: 0%;
  transition: width 0.15s ease;
}

.captcha-slider.captcha-slider--success .captcha-slider__track {
  background: linear-gradient(90deg, rgba(34, 197, 94, 0.25) 0%, transparent 100%);
  width: 100%;
}

.captcha-slider__thumb {
  position: absolute;
  left: 4px;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  background: linear-gradient(145deg, var(--color-bg-elevated), var(--color-bg-alt));
  border: 1px solid rgba(99, 102, 241, 0.4);
  border-radius: var(--radius-sm);
  cursor: grab;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-size: 1.1rem;
  box-shadow: var(--elevation-2);
  transition: left 0.05s ease-out, background 0.2s, border-color 0.2s, box-shadow 0.2s;
  z-index: 2;
}

.captcha-slider__thumb:hover {
  border-color: var(--color-accent);
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
}

.captcha-slider__thumb:active {
  cursor: grabbing;
}

.captcha-slider.captcha-slider--success .captcha-slider__thumb {
  left: calc(100% - 48px) !important;
  background: linear-gradient(145deg, rgba(34, 197, 94, 0.2), rgba(34, 197, 94, 0.05));
  border-color: var(--color-success);
  color: var(--color-success);
  cursor: default;
  animation: captcha-pulse 0.6s ease;
}

@keyframes captcha-pulse {
  0%, 100% { transform: translateY(-50%) scale(1); }
  50% { transform: translateY(-50%) scale(1.08); }
}

.captcha-slider__text {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: opacity 0.2s;
}

.captcha-slider--dragging .captcha-slider__text,
.captcha-slider--success .captcha-slider__text {
  opacity: 0;
}