/* ================================================================
   Accessibility (BVI) — Версия для слабовидящих
   ================================================================
   Approach: blanket override of ALL colors/backgrounds on the page
   using broad selectors. The accessibility widget (.accessibility-*)
   is excluded and styled independently.
   ================================================================ */

/* ── Base mode ── */
body.is-bvi {
  line-height: 1.9;
  font-family: Arial, Helvetica, sans-serif;
}

body.is-bvi h1,
body.is-bvi h2,
body.is-bvi h3,
body.is-bvi h4 {
  font-family: Arial, Helvetica, sans-serif;
}

body.is-bvi *:not(.accessibility-floating *) {
  box-shadow: none !important;
  text-shadow: none !important;
  animation: none !important;
  transition: none !important;
}

/* Hide decorative overlays and background images */
body.is-bvi .hero-bg,
body.is-bvi .page-hero__bg,
body.is-bvi .hero-overlay,
body.is-bvi .page-hero__overlay {
  display: none !important;
}

body.bvi-hide-media img:not(.site-brand img):not(.site-brand__img):not(.home-header img):not(.accessibility-floating img),
body.bvi-hide-media iframe,
body.bvi-hide-media video {
  display: none !important;
}

/* ================================================================
   LIGHT THEME  (black text on white/light-grey background)
   ================================================================ */
body.is-bvi[data-bvi-theme="light"] {
  background: #fff !important;
  color: #000 !important;
}

/* Force ALL text and ALL elements to black on white */
body.is-bvi[data-bvi-theme="light"] *:not(.accessibility-floating):not(.accessibility-floating *) {
  color: #000 !important;
  border-color: #ccc !important;
}

/* Force ALL backgrounds to white or very light grey */
body.is-bvi[data-bvi-theme="light"] *:not(.accessibility-floating):not(.accessibility-floating *) {
  background-color: transparent !important;
  background-image: none !important;
}

body.is-bvi[data-bvi-theme="light"] body,
body.is-bvi[data-bvi-theme="light"] {
  background: #fff !important;
}

/* Sections that had colored backgrounds — give a 5% tint */
body.is-bvi[data-bvi-theme="light"] .page-hero,
body.is-bvi[data-bvi-theme="light"] .hero,
body.is-bvi[data-bvi-theme="light"] .section-red,
body.is-bvi[data-bvi-theme="light"] .section-dark,
body.is-bvi[data-bvi-theme="light"] footer,
body.is-bvi[data-bvi-theme="light"] .site-footer {
  background-color: #f0f0f0 !important;
}

/* Cards, panels — very subtle grey */
body.is-bvi[data-bvi-theme="light"] .card,
body.is-bvi[data-bvi-theme="light"] .card-red,
body.is-bvi[data-bvi-theme="light"] .card-dark,
body.is-bvi[data-bvi-theme="light"] .info-card,
body.is-bvi[data-bvi-theme="light"] .info-card--red,
body.is-bvi[data-bvi-theme="light"] .info-card--dark,
body.is-bvi[data-bvi-theme="light"] .glass-panel,
body.is-bvi[data-bvi-theme="light"] .glass-panel--dark,
body.is-bvi[data-bvi-theme="light"] .document-block,
body.is-bvi[data-bvi-theme="light"] .contact-card,
body.is-bvi[data-bvi-theme="light"] .chip,
body.is-bvi[data-bvi-theme="light"] .chip--dark,
body.is-bvi[data-bvi-theme="light"] .stat-box,
body.is-bvi[data-bvi-theme="light"] .timeline__item,
body.is-bvi[data-bvi-theme="light"] .training-format-item,
body.is-bvi[data-bvi-theme="light"] .faq-group {
  background-color: #f5f5f5 !important;
  border-color: #ddd !important;
}

/* Buttons — high contrast */
body.is-bvi[data-bvi-theme="light"] .btn,
body.is-bvi[data-bvi-theme="light"] .btn-white,
body.is-bvi[data-bvi-theme="light"] button:not(.accessibility-floating button):not(.accessibility-floating *) {
  background-color: #fff !important;
  color: #000 !important;
  border: 2px solid #000 !important;
}

/* Links */
body.is-bvi[data-bvi-theme="light"] a:not(.accessibility-floating a) {
  color: #000 !important;
  text-decoration: underline !important;
}

/* White SVG logos — invert to black */
body.is-bvi[data-bvi-theme="light"] .site-brand img,
body.is-bvi[data-bvi-theme="light"] .home-header img,
body.is-bvi[data-bvi-theme="light"] footer img,
body.is-bvi[data-bvi-theme="light"] .site-footer img {
  filter: brightness(0) !important;
}

/* Pseudo-elements (::before, ::after) — force colors */
body.is-bvi[data-bvi-theme="light"] *:not(.accessibility-floating):not(.accessibility-floating *) ::before,
body.is-bvi[data-bvi-theme="light"] *:not(.accessibility-floating):not(.accessibility-floating *) ::after {
  color: #000 !important;
  background: transparent !important;
  background-image: none !important;
  border-color: #ccc !important;
}

/* List markers (bullet points) */
body.is-bvi[data-bvi-theme="light"] li::marker {
  color: #000 !important;
}

/* SVG fills */
body.is-bvi[data-bvi-theme="light"] svg:not(.accessibility-floating svg) {
  fill: #000 !important;
}

/* Inputs */
body.is-bvi[data-bvi-theme="light"] input,
body.is-bvi[data-bvi-theme="light"] textarea,
body.is-bvi[data-bvi-theme="light"] select {
  background-color: #fff !important;
  color: #000 !important;
  border: 2px solid #000 !important;
}

/* ================================================================
   DARK THEME  (white text on black background)
   ================================================================ */
body.is-bvi[data-bvi-theme="dark"] {
  background: #000 !important;
  color: #fff !important;
}

/* Force ALL text to white */
body.is-bvi[data-bvi-theme="dark"] *:not(.accessibility-floating):not(.accessibility-floating *) {
  color: #fff !important;
  border-color: #444 !important;
}

/* Force ALL backgrounds to black/very dark */
body.is-bvi[data-bvi-theme="dark"] *:not(.accessibility-floating):not(.accessibility-floating *) {
  background-color: transparent !important;
  background-image: none !important;
}

body.is-bvi[data-bvi-theme="dark"] body,
body.is-bvi[data-bvi-theme="dark"] {
  background: #000 !important;
}

/* Sections — subtle dark tint */
body.is-bvi[data-bvi-theme="dark"] .page-hero,
body.is-bvi[data-bvi-theme="dark"] .hero,
body.is-bvi[data-bvi-theme="dark"] .section-red,
body.is-bvi[data-bvi-theme="dark"] .section-dark,
body.is-bvi[data-bvi-theme="dark"] footer,
body.is-bvi[data-bvi-theme="dark"] .site-footer {
  background-color: #111 !important;
}

/* Cards, panels */
body.is-bvi[data-bvi-theme="dark"] .card,
body.is-bvi[data-bvi-theme="dark"] .card-red,
body.is-bvi[data-bvi-theme="dark"] .card-dark,
body.is-bvi[data-bvi-theme="dark"] .info-card,
body.is-bvi[data-bvi-theme="dark"] .info-card--red,
body.is-bvi[data-bvi-theme="dark"] .info-card--dark,
body.is-bvi[data-bvi-theme="dark"] .glass-panel,
body.is-bvi[data-bvi-theme="dark"] .glass-panel--dark,
body.is-bvi[data-bvi-theme="dark"] .document-block,
body.is-bvi[data-bvi-theme="dark"] .contact-card,
body.is-bvi[data-bvi-theme="dark"] .chip,
body.is-bvi[data-bvi-theme="dark"] .chip--dark,
body.is-bvi[data-bvi-theme="dark"] .stat-box,
body.is-bvi[data-bvi-theme="dark"] .timeline__item,
body.is-bvi[data-bvi-theme="dark"] .training-format-item,
body.is-bvi[data-bvi-theme="dark"] .faq-group {
  background-color: #1a1a1a !important;
  border-color: #333 !important;
}

/* Buttons */
body.is-bvi[data-bvi-theme="dark"] .btn,
body.is-bvi[data-bvi-theme="dark"] .btn-white,
body.is-bvi[data-bvi-theme="dark"] button:not(.accessibility-floating button):not(.accessibility-floating *) {
  background-color: #000 !important;
  color: #fff !important;
  border: 2px solid #fff !important;
}

/* Links */
body.is-bvi[data-bvi-theme="dark"] a:not(.accessibility-floating a) {
  color: #fff !important;
  text-decoration: underline !important;
}

/* Footer logo stays white (no filter needed) */

/* Pseudo-elements */
body.is-bvi[data-bvi-theme="dark"] *:not(.accessibility-floating):not(.accessibility-floating *) ::before,
body.is-bvi[data-bvi-theme="dark"] *:not(.accessibility-floating):not(.accessibility-floating *) ::after {
  color: #fff !important;
  background: transparent !important;
  background-image: none !important;
  border-color: #444 !important;
}

/* List markers */
body.is-bvi[data-bvi-theme="dark"] li::marker {
  color: #fff !important;
}

/* SVG fills */
body.is-bvi[data-bvi-theme="dark"] svg:not(.accessibility-floating svg) {
  fill: #fff !important;
}

/* Inputs */
body.is-bvi[data-bvi-theme="dark"] input,
body.is-bvi[data-bvi-theme="dark"] textarea,
body.is-bvi[data-bvi-theme="dark"] select {
  background-color: #111 !important;
  color: #fff !important;
  border: 2px solid #fff !important;
}

/* ================================================================
   YELLOW THEME  (black text on yellow background)
   ================================================================ */
body.is-bvi[data-bvi-theme="yellow"] {
  background: #f7e600 !important;
  color: #000 !important;
}

/* Force ALL text to black */
body.is-bvi[data-bvi-theme="yellow"] *:not(.accessibility-floating):not(.accessibility-floating *) {
  color: #000 !important;
  border-color: #b8a900 !important;
}

/* Force ALL backgrounds to yellow tones */
body.is-bvi[data-bvi-theme="yellow"] *:not(.accessibility-floating):not(.accessibility-floating *) {
  background-color: transparent !important;
  background-image: none !important;
}

body.is-bvi[data-bvi-theme="yellow"] body,
body.is-bvi[data-bvi-theme="yellow"] {
  background: #f7e600 !important;
}

/* Sections */
body.is-bvi[data-bvi-theme="yellow"] .page-hero,
body.is-bvi[data-bvi-theme="yellow"] .hero,
body.is-bvi[data-bvi-theme="yellow"] .section-red,
body.is-bvi[data-bvi-theme="yellow"] .section-dark,
body.is-bvi[data-bvi-theme="yellow"] footer,
body.is-bvi[data-bvi-theme="yellow"] .site-footer {
  background-color: #dece00 !important;
}

/* Cards, panels */
body.is-bvi[data-bvi-theme="yellow"] .card,
body.is-bvi[data-bvi-theme="yellow"] .card-red,
body.is-bvi[data-bvi-theme="yellow"] .card-dark,
body.is-bvi[data-bvi-theme="yellow"] .info-card,
body.is-bvi[data-bvi-theme="yellow"] .info-card--red,
body.is-bvi[data-bvi-theme="yellow"] .info-card--dark,
body.is-bvi[data-bvi-theme="yellow"] .glass-panel,
body.is-bvi[data-bvi-theme="yellow"] .glass-panel--dark,
body.is-bvi[data-bvi-theme="yellow"] .document-block,
body.is-bvi[data-bvi-theme="yellow"] .contact-card,
body.is-bvi[data-bvi-theme="yellow"] .chip,
body.is-bvi[data-bvi-theme="yellow"] .chip--dark,
body.is-bvi[data-bvi-theme="yellow"] .stat-box,
body.is-bvi[data-bvi-theme="yellow"] .timeline__item,
body.is-bvi[data-bvi-theme="yellow"] .training-format-item,
body.is-bvi[data-bvi-theme="yellow"] .faq-group {
  background-color: #ffe900 !important;
  border-color: #c4b300 !important;
}

/* Buttons */
body.is-bvi[data-bvi-theme="yellow"] .btn,
body.is-bvi[data-bvi-theme="yellow"] .btn-white,
body.is-bvi[data-bvi-theme="yellow"] button:not(.accessibility-floating button):not(.accessibility-floating *) {
  background-color: #f7e600 !important;
  color: #000 !important;
  border: 2px solid #000 !important;
}

/* Links */
body.is-bvi[data-bvi-theme="yellow"] a:not(.accessibility-floating a) {
  color: #000 !important;
  text-decoration: underline !important;
}

/* White SVG logos — invert to black */
body.is-bvi[data-bvi-theme="yellow"] .site-brand img,
body.is-bvi[data-bvi-theme="yellow"] .home-header img,
body.is-bvi[data-bvi-theme="yellow"] footer img,
body.is-bvi[data-bvi-theme="yellow"] .site-footer img {
  filter: brightness(0) !important;
}

/* Pseudo-elements */
body.is-bvi[data-bvi-theme="yellow"] *:not(.accessibility-floating):not(.accessibility-floating *) ::before,
body.is-bvi[data-bvi-theme="yellow"] *:not(.accessibility-floating):not(.accessibility-floating *) ::after {
  color: #000 !important;
  background: transparent !important;
  background-image: none !important;
  border-color: #b8a900 !important;
}

/* List markers */
body.is-bvi[data-bvi-theme="yellow"] li::marker {
  color: #000 !important;
}

/* SVG fills */
body.is-bvi[data-bvi-theme="yellow"] svg:not(.accessibility-floating svg) {
  fill: #000 !important;
}

/* Inputs */
body.is-bvi[data-bvi-theme="yellow"] input,
body.is-bvi[data-bvi-theme="yellow"] textarea,
body.is-bvi[data-bvi-theme="yellow"] select {
  background-color: #ffe900 !important;
  color: #000 !important;
  border: 2px solid #000 !important;
}


/* ================================================================
   ACCESSIBILITY WIDGET — always clean, never affected by themes
   ================================================================ */
.accessibility-floating {
  position: fixed;
  right: 12px;
  bottom: 12px;
  z-index: 200;
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
}

.accessibility-toggle {
  position: relative;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 999px;
  border: 2px solid rgba(17, 17, 17, 0.12);
  background: rgba(255, 255, 255, 0.98);
  color: #111;
  box-shadow: 0 4px 20px rgba(17, 17, 17, 0.10);
  cursor: pointer;
  transition: box-shadow 180ms ease, border-color 180ms ease;
}

.accessibility-toggle:hover {
  box-shadow: 0 6px 24px rgba(17, 17, 17, 0.16);
  border-color: rgba(17, 17, 17, 0.2);
}

.accessibility-toggle-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.accessibility-toggle-icon svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

/* Label: hidden by default, tooltip on hover */
.accessibility-toggle-label {
  position: absolute;
  right: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%);
  white-space: nowrap;
  padding: 8px 14px;
  border-radius: 12px;
  background: rgba(17, 17, 17, 0.9);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 600;
  line-height: 1.3;
  pointer-events: none;
  opacity: 0;
  transition: opacity 180ms ease;
}

.accessibility-toggle:hover .accessibility-toggle-label,
.accessibility-toggle:focus-visible .accessibility-toggle-label {
  opacity: 1;
}

.accessibility-tooltip {
  display: none;
}

.accessibility-toggle.is-active {
  background: #111;
  color: #fff;
  border-color: #111;
  box-shadow: 0 4px 20px rgba(17, 17, 17, 0.2);
}

.accessibility-tooltip {
  display: none;
}

.accessibility-panel {
  position: absolute;
  right: 0;
  bottom: calc(100% + 10px);
  width: min(430px, calc(100vw - 20px));
  max-height: min(78vh, 720px);
  overflow: auto;
  margin: 0;
  padding: 18px;
  border-radius: 28px;
  background: #fff;
  border: 1px solid rgba(17, 17, 17, 0.10);
  box-shadow: 0 16px 48px rgba(17, 17, 17, 0.18);
}

.accessibility-head {
  display: grid;
  gap: 12px;
  margin-bottom: 16px;
}

.accessibility-head p,
.accessibility-note {
  color: #666;
}

.accessibility-status {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  background: #f0f0f3;
  border: 1px solid rgba(17, 17, 17, 0.08);
  font-weight: 700;
  font-size: 0.85rem;
  color: #666;
}

.accessibility-status.is-active {
  background: #111;
  color: #fff;
  border-color: #111;
}

.accessibility-grid {
  display: grid;
  gap: 14px;
}

.accessibility-group {
  display: grid;
  gap: 10px;
  padding: 14px;
  border-radius: 20px;
  border: 1px solid rgba(17, 17, 17, 0.08);
  background: #fff;
}

.accessibility-label {
  font-weight: 800;
  color: #111;
}

.accessibility-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.accessibility-chip {
  min-height: 40px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid rgba(17, 17, 17, 0.12);
  background: #f4f4f7;
  color: #111;
  cursor: pointer;
  font: inherit;
}

.accessibility-chip.is-active {
  background: #111;
  border-color: #111;
  color: #fff;
}

.accessibility-group-wide .btn:disabled {
  opacity: 0.4;
  cursor: default;
}

/* Lock the widget to its own visual style under any theme */
body.is-bvi .accessibility-floating,
body.is-bvi .accessibility-floating * {
  color: #111 !important;
  background-color: transparent !important;
  background-image: none !important;
  border-color: transparent !important;
}

body.is-bvi .accessibility-toggle {
  background: #fff !important;
  border: 2px solid rgba(17, 17, 17, 0.12) !important;
  color: #111 !important;
}

body.is-bvi .accessibility-toggle.is-active {
  background: #111 !important;
  color: #fff !important;
  border-color: #111 !important;
}

body.is-bvi .accessibility-toggle.is-active .accessibility-toggle-icon svg {
  fill: #fff !important;
}

body.is-bvi .accessibility-toggle-label {
  background: rgba(17, 17, 17, 0.9) !important;
  color: #fff !important;
  border-color: transparent !important;
}

body.is-bvi .accessibility-panel {
  background: #fff !important;
  color: #111 !important;
  border: 1px solid rgba(17, 17, 17, 0.10) !important;
}

body.is-bvi .accessibility-panel * {
  color: #111 !important;
}

body.is-bvi .accessibility-head p,
body.is-bvi .accessibility-note {
  color: #666 !important;
}

body.is-bvi .accessibility-group {
  background: #fff !important;
  border-color: rgba(17, 17, 17, 0.08) !important;
}

body.is-bvi .accessibility-chip {
  background: #f4f4f7 !important;
  color: #111 !important;
  border-color: rgba(17, 17, 17, 0.12) !important;
}

body.is-bvi .accessibility-chip.is-active {
  background: #111 !important;
  color: #fff !important;
  border-color: #111 !important;
}

body.is-bvi .accessibility-status {
  background: #f0f0f3 !important;
  color: #666 !important;
  border-color: rgba(17, 17, 17, 0.08) !important;
}

body.is-bvi .accessibility-status.is-active {
  background: #111 !important;
  color: #fff !important;
  border-color: #111 !important;
}

body.is-bvi .accessibility-group-wide .btn {
  background: #f4f4f7 !important;
  color: #111 !important;
  border: 1px solid rgba(17, 17, 17, 0.12) !important;
}

body.is-bvi .accessibility-group-wide .btn:disabled {
  opacity: 0.4 !important;
}

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (min-width: 720px) {
  .accessibility-floating {
    right: 16px;
    bottom: 16px;
  }

  .accessibility-toggle {
    width: 60px;
    height: 60px;
  }

  .accessibility-toggle-icon,
  .accessibility-toggle-icon svg {
    width: 26px;
    height: 26px;
  }

  .accessibility-panel {
    bottom: calc(100% + 14px);
    width: min(430px, calc(100vw - 32px));
  }

  .accessibility-head {
    grid-template-columns: 1fr auto;
    align-items: start;
  }
}

@media (max-width: 719px) {
  .accessibility-toggle {
    width: 48px;
    height: 48px;
    border-width: 2px;
  }

  .accessibility-toggle-icon,
  .accessibility-toggle-icon svg {
    width: 20px;
    height: 20px;
  }

  .accessibility-panel {
    width: min(360px, calc(100vw - 16px));
  }
}