/**
 * KV Visual Accessibility Plugin - Panel Styles (optimized)
 * Плагин соответствует законодательству Государственным и международным стандартам
 */

/* =========================================
   1) Skip links (доступность клавиатурой)
========================================= */
.kv-skip-link {
  position: absolute;
  left: -9999px;
  top: -9999px;
  z-index: 999999;
  background: #000;
  color: #fff;
  padding: 8px 16px;
  text-decoration: none;
  border-radius: 3px;
  font-size: 14px;
  line-height: 1.4;
}
.kv-skip-link:focus { left: 20px; top: 20px; }

/* =========================================
   2) Кнопка панели - Современный дизайн
========================================= */
.kv-accessibility-button {
  position: fixed;
  z-index: 999999;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  padding: 14px 20px;
  border-radius: 50px;
  cursor: pointer;
  font: 14px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  min-width: 48px; min-height: 48px;
  display: flex; align-items: center; gap: 10px;
  border: none;
  box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3), 0 4px 12px rgba(0,0,0,0.15);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(10px);
  overflow: hidden;
}

/* Эффект свечения */
.kv-accessibility-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, rgba(255,255,255,0.1) 100%);
  border-radius: 50px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.kv-accessibility-button:hover::before {
  opacity: 1;
}

.kv-accessibility-button:hover,
.kv-accessibility-button:focus {
  background: linear-gradient(135deg, #5a67d8 0%, #6b46c1 100%);
  outline: none;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 35px rgba(102, 126, 234, 0.4), 0 6px 20px rgba(0,0,0,0.2);
}

.kv-accessibility-button:focus { 
  outline: 3px solid rgba(255,255,255,0.8); 
  outline-offset: 3px; 
}

.kv-accessibility-button:active {
  transform: translateY(-1px) scale(0.98);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3), 0 3px 10px rgba(0,0,0,0.15);
}

.kv-accessibility-icon { 
  font-size: 20px; 
  line-height: 1; 
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
  transition: transform 0.3s ease;
}

.kv-accessibility-button:hover .kv-accessibility-icon {
  transform: scale(1.1) rotate(5deg);
}

.kv-accessibility-text { 
  font-weight: 600; 
  white-space: nowrap; 
  text-shadow: 0 1px 2px rgba(0,0,0,0.2);
  letter-spacing: 0.5px;
  transition: all 0.3s ease;
}

/* Пульсация для привлечения внимания */
@keyframes kv-pulse {
  0% { box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3), 0 4px 12px rgba(0,0,0,0.15); }
  50% { box-shadow: 0 8px 25px rgba(102, 126, 234, 0.5), 0 4px 12px rgba(0,0,0,0.25), 0 0 0 0 rgba(102, 126, 234, 0.7); }
  100% { box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3), 0 4px 12px rgba(0,0,0,0.15); }
}

/* Анимация появления */
@keyframes kv-fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.kv-accessibility-button {
  animation: kv-fadeInUp 0.6s ease-out;
}

/* Эффект пульсации при первом появлении */
.kv-accessibility-button.kv-first-load {
  animation: kv-fadeInUp 0.6s ease-out, kv-pulse 2s ease-in-out 0.6s;
}

/* Позиции */
.kv-accessibility-button.kv-position-top-left { top: 20px; left: 20px; }
.kv-accessibility-button.kv-position-top-right { top: 20px; right: 20px; }
.kv-accessibility-button.kv-position-bottom-left { bottom: 20px; left: 20px; }
.kv-accessibility-button.kv-position-bottom-right { bottom: 20px; right: 20px; }
.kv-accessibility-button.kv-position-inline { position: static; display: inline-flex; margin: 10px 0; }

/* Доп. стили кнопки */
.kv-accessibility-button.kv-style-square { 
  border-radius: 12px; 
  background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
}

.kv-accessibility-button.kv-style-square::before {
  border-radius: 12px;
}

.kv-accessibility-button.kv-style-minimal { 
  background: linear-gradient(135deg, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.6) 100%); 
  padding: 10px 14px; 
  font-size: 12px; 
  box-shadow: 0 4px 15px rgba(0,0,0,0.3), 0 2px 8px rgba(0,0,0,0.2);
  backdrop-filter: blur(15px);
}

.kv-accessibility-button.kv-style-minimal:hover {
  background: linear-gradient(135deg, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.7) 100%);
  box-shadow: 0 6px 20px rgba(0,0,0,0.4), 0 3px 12px rgba(0,0,0,0.3);
}

/* =========================================
   3) Панель и оверлей
========================================= */
.kv-accessibility-panel {
  position: fixed; top: 0; right: -400px;
  width: 400px; max-width: 100%;
  height: 100vh;
  background: #fff;
  border-left: 1px solid #e5e7eb;
  box-shadow: -5px 0 20px rgba(0,0,0,.15);
  z-index: 10000000;
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: #333;
  display: flex; flex-direction: column;
  transition: right .3s cubic-bezier(.4,0,.2,1);
}

/* перебиваем критические inline-стили из PHP */
.kv-accessibility-panel[aria-hidden="false"]{
  right: 0 !important;
  visibility: visible !important;
  opacity: 1 !important;
  transition: right .25s ease, opacity .2s ease, visibility 0s !important;
}

/* Шапка панели */
.kv-accessibility-panel-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 20px 24px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  flex-shrink: 0;
  box-shadow: 0 2px 10px rgba(102,126,234,.3);
}
.kv-accessibility-panel-header h2 {
  margin: 0; font-size: 20px; font-weight: 600; color: #fff; line-height: 1.2;
}
.kv-accessibility-close {
  background: rgba(255,255,255,.2);
  border: 0;
  font-size: 24px;
  color: #fff;
  cursor: pointer;
  width: 40px; height: 40px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  transition: background .2s ease, outline-color .2s ease;
  min-width: 44px; min-height: 44px;
}
.kv-accessibility-close:hover,
.kv-accessibility-close:focus { background: rgba(255,255,255,.3); outline: 2px solid rgba(255,255,255,.8); outline-offset: 2px; }

/* Контент панели (скролл внутри) */
.kv-accessibility-panel-content {
  flex: 1 1 auto;
  overflow-y: auto; overflow-x: hidden;
  padding: 24px;
  background: #fff; color: #333;
}
.kv-accessibility-panel-content::-webkit-scrollbar { width: 8px; }
.kv-accessibility-panel-content::-webkit-scrollbar-track { background: #f1f1f1; border-radius: 4px; }
.kv-accessibility-panel-content::-webkit-scrollbar-thumb { background: #c1c1c1; border-radius: 4px; }
.kv-accessibility-panel-content::-webkit-scrollbar-thumb:hover { background: #a1a1a1; }

/* Оверлей (без размытия) */
.kv-accessibility-overlay {
  position: fixed; inset: 0;
  background: transparent !important;   /* было rgba(0,0,0,.3) */
  opacity: 1 !important;                /* всегда видим для ловли клика */
  visibility: visible !important;
  pointer-events: none;                  /* НЕ перехватывает клики по сайту */
  z-index: 9999999;
}
.kv-accessibility-overlay.active { /* не влияет на внешний вид */
  background: transparent !important;
  pointer-events: none;
}


/* =========================================
   4) Элементы управления в панели
========================================= */
.kv-accessibility-section {
  margin-bottom: 28px; padding-bottom: 20px; border-bottom: 1px solid #f0f0f0;
}
.kv-accessibility-section:last-child { margin-bottom: 0; padding-bottom: 0; border-bottom: 0; }

.kv-section-title {
  margin: 0 0 14px; font-size: 16px; font-weight: 600; color: #333; display: flex; align-items: center; gap: 8px;
}
.kv-section-title::before {
  content: ''; width: 4px; height: 16px; border-radius: 2px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.kv-control-group { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

.kv-control-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 16px;
  background: #f8f9fa;
  border: 2px solid #e1e5e9;
  border-radius: 8px;
  color: #495057;
  font-weight: 500;
  min-height: 44px; min-width: 44px;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease;
  text-align: center;
}
.kv-control-btn:hover { background: #e9ecef; border-color: #adb5bd; transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,.1); }
.kv-control-btn:focus { outline: 3px solid #667eea; outline-offset: 2px; border-color: #667eea; }
.kv-control-btn:active { transform: none; box-shadow: 0 2px 6px rgba(0,0,0,.08); }
.kv-control-btn[aria-pressed="true"] { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); border-color: #5a67d8; color: #fff; box-shadow: 0 4px 15px rgba(102,126,234,.4); }

.kv-text-size-controls { background: #f8f9fa; border-radius: 12px; padding: 16px; justify-content: space-between; width: 100%; }
.kv-text-size-display { font-size: 18px; font-weight: 600; color: #495057; background: #fff; padding: 6px 12px; border-radius: 6px; border: 1px solid #dee2e6; }

/* Типографические контролы */
.kv-typography-controls { 
  background: #f8f9fa; 
  border-radius: 12px; 
  padding: 16px; 
  justify-content: space-between; 
  width: 100%; 
  gap: 12px;
  margin-top: 12px;
  flex-wrap: wrap;
}
.kv-typography-controls .kv-control-btn {
  background: #f8f9fa;
  border: 2px solid #e1e5e9;
  border-radius: 8px;
  color: #495057;
  font-weight: 500;
  min-width: 140px;
  flex: 1;
  max-width: 180px;
  padding: 12px 16px;
  font-size: 14px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease;
  text-align: center;
}
.kv-typography-controls .kv-control-btn:hover {
  background: #e9ecef;
  border-color: #adb5bd;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,.1);
}
.kv-typography-controls .kv-control-btn:focus {
  outline: 3px solid #667eea;
  outline-offset: 2px;
  border-color: #667eea;
}
.kv-typography-controls .kv-control-btn:active {
  transform: none;
  box-shadow: 0 2px 6px rgba(0,0,0,.08);
}



.kv-tts-speed-control { margin-top: 12px; padding: 12px; background: #f8f9fa; border-radius: 8px; }
.kv-tts-speed-value { display: inline-block; min-width: 30px; text-align: center; font-weight: 600; margin-left: 8px; color: #495057; }

/* Горячие клавиши / нормативная */
.kv-hotkeys-list { 
  list-style: none; 
  padding: 0; 
  margin: 0; 
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 16px;
}
.kv-hotkeys-list li { 
  padding: 6px 0; 
  font-size: 13px; 
  color: #333; 
  display: flex;
  align-items: center;
  gap: 8px;
}
.kv-hotkeys-list kbd { 
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  border: 1px solid #adb5bd; 
  border-radius: 4px; 
  padding: 3px 8px; 
  font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace; 
  font-size: 11px; 
  color: #495057;
  font-weight: 600;
  box-shadow: 0 1px 2px rgba(0,0,0,0.1);
  min-width: 60px;
  text-align: center;
  white-space: nowrap;
}
.kv-normative-info ul { list-style: none; padding: 0; margin: 10px 0; }
.kv-normative-info li { padding: 4px 0; color: #495057; font-size: 13px; }
.kv-normative-info li::before { content: "✓"; color: #28a745; font-weight: 700; margin-right: 8px; }

/* =========================================
   5) Служебные элементы и состояния
========================================= */
#kv-accessibility-status {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: rgba(0,0,0,.8); color: #fff;
  padding: 12px 24px; border-radius: 24px; font-size: 14px;
  z-index: 10000001;
  opacity: 0; visibility: hidden;
  transition: opacity .3s ease, visibility .3s ease;
}
#kv-accessibility-status.active { opacity: 1; visibility: visible; }

/* Фокус внутри панели */
.kv-accessibility-panel *:focus { outline: 2px solid #0073aa; outline-offset: 2px; }
.kv-accessibility-panel *:focus:not(:focus-visible) { outline: none; }

/* Состояние «панель открыта» — на десктопе сдвигаем контент */
body.kv-accessibility-panel-open { margin-right: 400px; transition: margin-right .3s cubic-bezier(.4,0,.2,1); }

/* =========================================
   6) Режимы (только для контента сайта)
   Применяются к #kv-accessibility-site
========================================= */
/* Цветовые схемы */
#kv-accessibility-site.kv-inverted      { filter: invert(1) hue-rotate(180deg); }
#kv-accessibility-site.kv-grayscale     { filter: grayscale(1); }
#kv-accessibility-site.kv-sepia         { filter: sepia(1); }
#kv-accessibility-site.kv-high-contrast { filter: contrast(1.3) brightness(1.05); }

/* Шрифты */
#kv-accessibility-site.kv-font-sans-serif { font-family: Arial, Helvetica, sans-serif !important; }
#kv-accessibility-site.kv-font-readable   { font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Arial, sans-serif !important; }
#kv-accessibility-site.kv-font-verdana { font-family: Verdana, Geneva, sans-serif !important; }
#kv-accessibility-site.kv-font-georgia { font-family: Georgia, "Times New Roman", serif !important; }


/* Фичи */
#kv-accessibility-site.kv-increased-line-height { line-height: 1.8 !important; }
#kv-accessibility-site.kv-increased-letter-spacing { letter-spacing: .06em !important; }
#kv-accessibility-site.kv-underline-links a { text-decoration: underline !important; }
#kv-accessibility-site.kv-highlight-focus :focus { outline: 3px solid #1d4ed8 !important; outline-offset: 2px !important; }
#kv-accessibility-site.kv-reading-mode { max-width: 760px; margin: 0 auto; }
#kv-accessibility-site.kv-hide-images img { visibility: hidden !important; }
#kv-accessibility-site.kv-pause-animations *,
#kv-accessibility-site.kv-pause-animations *::before,
#kv-accessibility-site.kv-pause-animations *::after { animation: none !important; transition: none !important; }

/* Крупный курсор */
#kv-accessibility-site.kv-large-cursor,
#kv-accessibility-site.kv-large-cursor * {
  cursor: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='48' height='48' viewBox='0 0 48 48'><path d='M4 4 L4 36 L12 28 L20 44 L26 41 L18 25 L28 25 Z' fill='%23ffffff' stroke='%23000000' stroke-width='2'/></svg>") 0 0, default !important;
}
#kv-accessibility-site.kv-large-cursor a,
#kv-accessibility-site.kv-large-cursor button,
#kv-accessibility-site.kv-large-cursor [role="button"],
#kv-accessibility-site.kv-large-cursor input[type="button"],
#kv-accessibility-site.kv-large-cursor input[type="submit"],
#kv-accessibility-site.kv-large-cursor label,
#kv-accessibility-site.kv-large-cursor summary {
  cursor: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='48' height='48' viewBox='0 0 24 24'><path fill='%23ffffff' stroke='%23000' stroke-width='1' d='M6 2c-1 0-2 .9-2 2v10c0 1.1.9 2 2 2h3v6l6-6h5c1.1 0 2-.9 2-2V8c0-1.1-.9-2-2-2h-6V4c0-1.1-.9-2-2-2H6z'/></svg>") 4 0, pointer !important;
}
/* Панель остаётся обычной (вне wrapper'а) */
.kv-accessibility-panel, .kv-accessibility-panel * { cursor: auto !important; color: #111; }

/* =========================================
   7) Адаптивность
========================================= */
@media (max-width: 768px) {
  .kv-accessibility-panel { width: 100%; right: -100%; }
  .kv-accessibility-panel[aria-hidden="false"] { right: 0 !important; }
  .kv-accessibility-button .kv-accessibility-text { display: none; }
  .kv-accessibility-button { 
    padding: 14px; 
    border-radius: 50%; 
    width: 56px; 
    height: 56px; 
    justify-content: center; 
    min-width: 56px;
    min-height: 56px;
  }
  .kv-accessibility-button .kv-accessibility-icon {
    font-size: 22px;
  }
  .kv-accessibility-panel-header, .kv-accessibility-panel-content { padding: 16px; }
  body.kv-accessibility-panel-open { margin-right: 0; }
  /* блокировка скролла на мобиле */
  body.kv-accessibility-no-scroll { overflow: hidden !important; position: fixed; width: 100%; }
  
  /* Адаптивность для типографических контролов */
  .kv-typography-controls {
    flex-direction: column;
    gap: 8px;
  }
  .kv-typography-controls .kv-control-btn {
    min-width: 100%;
    max-width: 100%;
    padding: 12px 16px;
  }
  .kv-typography-controls .kv-btn-text {
    font-size: 14px;
  }
  
  /* Адаптивность для горячих клавиш */
  .kv-hotkeys-list {
    grid-template-columns: 1fr;
    gap: 6px;
  }
  
  .kv-hotkeys-list li {
    padding: 4px 0;
    font-size: 12px;
  }
  
  .kv-hotkeys-list kbd {
    font-size: 10px;
    padding: 2px 6px;
    min-width: 50px;
  }
}

/* Планшеты */
@media (min-width: 769px) and (max-width: 1024px) { .kv-accessibility-panel { width: 350px; } }

/* =========================================
   8) Системные предпочтения и улучшенная доступность
========================================= */
@media (prefers-contrast: high) {
  .kv-accessibility-panel * { border-color: currentColor; }
  .kv-control-btn { border-width: 3px; }
  .kv-accessibility-button { border-width: 3px; }
}

@media (prefers-reduced-motion: reduce) {
  .kv-accessibility-panel,
  .kv-accessibility-panel *,
  .kv-accessibility-button,
  .kv-accessibility-overlay {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
}

/* Улучшенная видимость фокуса */
.kv-focus-visible *:focus-visible {
  outline: 3px solid #005fcc !important;
  outline-offset: 2px !important;
  box-shadow: 0 0 0 1px #ffffff, 0 0 0 4px #005fcc !important;
}

/* Высокий контраст для элементов управления */
.kv-high-contrast-mode .kv-control-btn {
  border-width: 2px !important;
  font-weight: 600 !important;
}

.kv-high-contrast-mode .kv-accessibility-button {
  border-width: 3px !important;
  font-weight: 600 !important;
}

/* Улучшенная навигация с клавиатуры */
.kv-keyboard-navigation .kv-control-btn:focus,
.kv-keyboard-navigation .kv-accessibility-button:focus {
  transform: scale(1.05) !important;
  box-shadow: 0 0 0 3px #005fcc, 0 4px 20px rgba(0,95,204,0.3) !important;
}

/* Индикатор активного элемента */
.kv-keyboard-navigation .kv-control-btn:focus::after {
  content: " (активно)";
  font-size: 0.8em;
  opacity: 0.8;
}

/* =========================================
   9) Вспомогательные классы
========================================= */
.sr-only, .screen-reader-text {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}