/**
 * Anastylose - Shared Minimalist Glassmorphism Controller on Photo
 * Positioned exclusively at the bottom of the 9:16 photographic canvas.
 * Strict monochrome palette, high transparency, subtle optical glass blur.
 */

:root {
  /* Тонкое прозрачное оптическое стекло */
  --glass-bg: rgba(10, 13, 18, 0.32);
  --glass-bg-hover: rgba(12, 15, 22, 0.42);
  --glass-border: rgba(255, 255, 255, 0.13);
  --glass-border-highlight: rgba(255, 255, 255, 0.24);
  --glass-shadow: 0 14px 30px -4px rgba(0, 0, 0, 0.45), 
                  0 4px 12px rgba(0, 0, 0, 0.3),
                  inset 0 1px 0 rgba(255, 255, 255, 0.16);
  --glass-blur: blur(8px);

  /* Монохромная палитра */
  --text-dimmed: rgba(255, 255, 255, 0.65);
  --text-active: #ffffff;
  --track-bg: rgba(255, 255, 255, 0.12);
  --track-hover: rgba(255, 255, 255, 0.18);
  --track-fill: rgba(255, 255, 255, 0.88);
}

/* Контейнер панели, парящий поверх фото внизу */
.photo-glass-bar {
  position: absolute;
  bottom: 26px;
  left: 20px;
  right: 20px;
  z-index: 30;
  
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 18px;
  
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-top-color: var(--glass-border-highlight);
  border-radius: 14px;
  box-shadow: var(--glass-shadow);
  
  pointer-events: auto;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
  
  transition: border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}

.photo-glass-bar:hover {
  border-color: rgba(255, 255, 255, 0.22);
  background: var(--glass-bg-hover);
  box-shadow: 0 16px 34px -4px rgba(0, 0, 0, 0.55), 
              0 6px 14px rgba(0, 0, 0, 0.35),
              inset 0 1px 0 rgba(255, 255, 255, 0.22);
}

/* =========================================================================
   1. Визуальный элемент скролла / вращения энкодера (Монохром)
   ========================================================================= */
.scroll-cue {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 24px;
  height: 34px;
  border: 1.5px solid rgba(255, 255, 255, 0.24);
  border-radius: 12px;
  position: relative;
  background: rgba(255, 255, 255, 0.03);
  transition: all 0.25s ease;
  cursor: pointer;
}

.photo-glass-bar:hover .scroll-cue {
  border-color: rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.06);
}

/* Колесико / пульсирующая засечка скролла */
.scroll-cue-wheel {
  width: 3px;
  height: 6px;
  background: rgba(255, 255, 255, 0.85);
  border-radius: 2px;
  position: absolute;
  top: 7px;
  animation: scrollCueBounce 2s cubic-bezier(0.4, 0, 0.2, 1) infinite;
  box-shadow: 0 0 4px rgba(255, 255, 255, 0.5);
}

@keyframes scrollCueBounce {
  0% {
    opacity: 0;
    transform: translateY(0);
  }
  30% {
    opacity: 1;
    transform: translateY(3px);
  }
  70% {
    opacity: 1;
    transform: translateY(11px);
  }
  100% {
    opacity: 0;
    transform: translateY(14px);
  }
}

/* Эффект активного скролла / вращения энкодера (Чистый белый импульс) */
.scroll-cue.active {
  border-color: rgba(255, 255, 255, 0.9);
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.35);
}

.scroll-cue.active .scroll-cue-wheel {
  background: #ffffff;
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.9);
}

/* =========================================================================
   2. Ползунок прогресса «быть ↔ казаться» без делений (Монохром)
   ========================================================================= */
.slider-container {
  display: flex;
  align-items: center;
  flex: 1;
  gap: 12px;
  min-width: 0;
}

/* Метки полюсов: БЫТЬ / КАЗАТЬСЯ */
.polarity-label {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--text-dimmed);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.85);
  transition: color 0.25s ease, text-shadow 0.25s ease, opacity 0.25s ease;
}

.label-being.highlight,
.label-seeming.highlight {
  color: var(--text-active);
  text-shadow: 0 0 8px rgba(255, 255, 255, 0.6), 0 1px 3px rgba(0, 0, 0, 0.9);
}

/* Интерактивная дорожка ползунка */
.track-wrapper {
  position: relative;
  flex: 1;
  height: 28px;
  display: flex;
  align-items: center;
  cursor: pointer;
}

.track-groove {
  position: relative;
  width: 100%;
  height: 3px;
  background: var(--track-bg);
  border-radius: 2px;
  overflow: visible;
  transition: background 0.2s ease, height 0.2s ease;
}

.track-wrapper:hover .track-groove {
  background: var(--track-hover);
  height: 4px;
}

/* Монохромная заливка пройденного пути без делений */
.track-progress-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.65) 0%, rgba(255, 255, 255, 0.92) 100%);
  border-radius: 2px;
  box-shadow: 0 0 6px rgba(255, 255, 255, 0.35);
  pointer-events: none;
}

/* Тактильный бегунок (Thumb) — Чистый белый минимализм */
.track-thumb {
  position: absolute;
  top: 50%;
  left: 0%;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.7),
              0 2px 6px rgba(0, 0, 0, 0.6);
  transform: translate(-50%, -50%);
  pointer-events: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, width 0.15s ease, height 0.15s ease;
}

.track-wrapper:hover .track-thumb,
.track-wrapper.dragging .track-thumb {
  width: 16px;
  height: 16px;
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.95),
              0 2px 8px rgba(0, 0, 0, 0.7);
}

.track-wrapper.dragging .track-thumb {
  transform: translate(-50%, -50%) scale(1.1);
}

/* Адаптивность для узких экранов */
@media (max-width: 480px) {
  .photo-glass-bar {
    bottom: 16px;
    left: 12px;
    right: 12px;
    padding: 10px 14px;
    gap: 12px;
  }

  .polarity-label {
    font-size: 10px;
    letter-spacing: 0.08em;
  }

  .scroll-cue {
    width: 20px;
    height: 30px;
  }
}