/*
 * SLC railway language switcher - Design 1 glass checkpoint v4.
 * Component styles are deliberately scoped to prevent page-level leakage.
 */
.rail-language-switcher {
  --text: #edf3f6;
  --muted: #b2bdc4;
  --muted-2: #9ca8af;
  --fa-rgb: 217 154 67;
  --dari-rgb: 195 137 99;
  --en-rgb: 53 184 234;
  --ru-rgb: 143 183 207;
  --active-rgb: var(--fa-rgb);
  --switch-width: 248px;
  --switch-height: 366px;
  --radius: 10px;
  --font-ui: "Segoe UI", Arial, sans-serif;
  --font-fa: "IRANSansX", "Vazirmatn", Tahoma, Arial, sans-serif;
  color: var(--text);
  font-family: var(--font-ui);
}

.rail-language-switcher,
.rail-language-switcher *,
.rail-language-switcher *::before,
.rail-language-switcher *::after {
  box-sizing: border-box;
}

.rail-language-switcher a,
.rail-language-switcher button {
  font: inherit;
}

.rail-language-switcher button {
  -webkit-tap-highlight-color: transparent;
}

.rail-language-switcher .sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
/* Component shell - glass treatment adapted from the approved checkpoint reference. */
.rail-language-switcher .language-switcher {
  position: relative;
  isolation: isolate;
  direction: ltr;
  width: var(--switch-width);
  height: var(--switch-height);
  overflow: hidden;
  border: 0;
  border-radius: var(--radius);
  background:
    linear-gradient(145deg, rgba(255,255,255,.045), transparent 34%),
    linear-gradient(180deg, rgba(20,27,31,.74), rgba(8,12,15,.80));
  box-shadow:
    0 24px 58px rgba(0,0,0,.40),
    inset 0 1px 0 rgba(255,255,255,.11),
    inset 0 -12px 24px rgba(0,0,0,.09);
  -webkit-backdrop-filter: blur(11px) saturate(108%) brightness(91%) contrast(106%);
  backdrop-filter: blur(11px) saturate(108%) brightness(91%) contrast(106%);
}
.rail-language-switcher .language-switcher::before,
.rail-language-switcher .language-switcher::after { content: ""; position: absolute; pointer-events: none; }
/* True 1px optical rim: bright upper-left, restrained lower-right. */
.rail-language-switcher .language-switcher::before {
  z-index: 8;
  inset: 0;
  padding: 1px;
  border-radius: inherit;
  background: linear-gradient(135deg,
    rgba(255,255,255,.44),
    rgba(255,255,255,.055) 34%,
    rgba(0,0,0,.18) 68%,
    rgba(255,255,255,.16));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
}
.rail-language-switcher .language-switcher::after {
  z-index: 3;
  inset: 1px;
  border-radius: calc(var(--radius) - 1px);
  background:
    linear-gradient(28deg, rgba(0,0,0,.13), rgba(255,255,255,.012)),
    radial-gradient(circle at 76% 16%, rgba(201,235,255,.045), transparent 36%);
}
.rail-language-switcher .language-switcher__chrome {
  position: absolute;
  z-index: 4;
  inset: -32% -72%;
  pointer-events: none;
  opacity: .46;
  transform: rotate(22deg) translateX(-25%);
  background: linear-gradient(90deg, transparent 42%, rgba(255,255,255,.024) 50%, transparent 58%);
}
.rail-language-switcher .language-switcher__header,
.rail-language-switcher .language-switcher__footer,
.rail-language-switcher .turnout { z-index: 10; }

@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .rail-language-switcher .language-switcher {
    background: linear-gradient(180deg, rgba(20,27,31,.94), rgba(8,12,15,.97));
  }
}

@media (prefers-reduced-transparency: reduce) {
  .rail-language-switcher .language-switcher {
    background: linear-gradient(180deg, rgba(20,27,31,.95), rgba(8,12,15,.98));
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }
}
.rail-language-switcher .language-switcher__header,
.rail-language-switcher .language-switcher__footer {
  position: absolute;
  left: 16px;
  right: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #9ba7ae;
  font-size: .54rem;
  font-weight: 680;
  letter-spacing: .155em;
  text-transform: uppercase;
}
.rail-language-switcher .language-switcher__header { top: 15px; }
.rail-language-switcher .language-switcher__footer {
  bottom: 13px;
  padding-top: 8px;
  border-top: 1px solid rgba(186,202,211,.15);
}
.rail-language-switcher .language-switcher__status { display: inline-flex; align-items: center; gap: 8px; }
.rail-language-switcher .language-switcher__status-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: rgb(var(--en-rgb));
  box-shadow: 0 0 12px rgba(var(--en-rgb) / .66);
}
.rail-language-switcher .language-switcher__current {
  color: var(--text);
  font-size: .56rem;
  font-weight: 760;
  letter-spacing: .11em;
  white-space: nowrap;
  text-align: right;
}

/* Turnout geometry */
.rail-language-switcher .turnout { position: absolute; inset: 31px 6px 38px; }
.rail-language-switcher .turnout__svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.rail-language-switcher .track-track,
.rail-language-switcher .track-gap,
.rail-language-switcher .route,
.rail-language-switcher .route-sweep,
.rail-language-switcher .blade-guides path { fill: none; stroke-linecap: round; stroke-linejoin: round; vector-effect: non-scaling-stroke; }
.rail-language-switcher .track-track {
  stroke: url(#steelGradient);
  stroke-width: 6.15;
  filter: drop-shadow(0 1px 0 rgba(0,0,0,.52));
}
.rail-language-switcher .track-gap { stroke: rgba(12, 17, 21, .72); stroke-width: 2.05; }
.rail-language-switcher .sleepers line {
  stroke: rgba(190,205,213,.38);
  stroke-width: 1.2;
  vector-effect: non-scaling-stroke;
  stroke-linecap: round;
}
.rail-language-switcher .blade-guides { opacity: 0; pointer-events: none; }
.rail-language-switcher .blade-guides path { stroke: transparent; stroke-width: 1; }

/* Route illumination stays inside the physical rail gauge, but is deliberately visible at normal viewing distance. */
.rail-language-switcher .route { opacity: .16; stroke-width: 1.8; }
.rail-language-switcher .route--fa { stroke: rgb(var(--fa-rgb)); }
.rail-language-switcher .route--dari { stroke: rgb(var(--dari-rgb)); }
.rail-language-switcher .route--en { stroke: rgb(var(--en-rgb)); }
.rail-language-switcher .route--ru { stroke: rgb(var(--ru-rgb)); }
.rail-language-switcher .route-sweep {
  opacity: 0;
  stroke: rgba(248,252,254,.96);
  stroke-width: 2.05;
  filter: url(#softGlow);
}

/* Geometry-driven tongues: no hand-tuned rotation angles. */
.rail-language-switcher .switch-blade {
  opacity: .95;
  transition: opacity 160ms ease;
}
.rail-language-switcher .language-switcher:not([data-ready="true"]) .switch-blade { opacity: 0; }
.rail-language-switcher .switch-blade__shadow,
.rail-language-switcher .switch-blade__metal,
.rail-language-switcher .switch-blade__active {
  vector-effect: non-scaling-stroke;
  stroke-linecap: round;
}
.rail-language-switcher .switch-blade__shadow { stroke: rgba(0,0,0,.68); stroke-width: 6.6; }
.rail-language-switcher .switch-blade__metal { stroke: #aab5bc; stroke-width: 4.6; }
.rail-language-switcher .switch-blade__gauge { stroke: rgba(12,17,21,.76); stroke-width: 2.1; }
.rail-language-switcher .switch-blade__active {
  stroke: rgb(var(--motion-rgb, var(--active-rgb)) / .42);
  stroke-width: 1.05;
  opacity: .48;
}

.rail-language-switcher .pivot__outer {
  fill: #151d21;
  stroke: rgba(204,217,224,.5);
  stroke-width: 1;
}
.rail-language-switcher .pivot__inner { fill: #a6b1b7; opacity: .88; }
.rail-language-switcher .pivot__lock {
  fill: none;
  stroke: rgb(var(--motion-rgb, var(--active-rgb)) / .58);
  stroke-width: 1;
  opacity: 0;
  transform-box: fill-box;
  transform-origin: center;
}

.rail-language-switcher .terminal__halo,
.rail-language-switcher .terminal__ring,
.rail-language-switcher .terminal__core { transform-box: fill-box; transform-origin: center; }
.rail-language-switcher .terminal__halo { opacity: .01; filter: url(#softGlow); }
.rail-language-switcher .terminal__ring { fill: rgba(12,17,20,.94); stroke: rgba(179,194,203,.36); stroke-width: 1.15; opacity: .76; }
.rail-language-switcher .terminal__core { fill: rgba(170,184,192,.82); opacity: .22; }
.rail-language-switcher .terminal--fa .terminal__halo,
.rail-language-switcher .terminal--fa .terminal__core { fill: rgb(var(--fa-rgb)); }
.rail-language-switcher .terminal--fa .terminal__ring { --terminal-accent: var(--fa-rgb); }
.rail-language-switcher .terminal--dari .terminal__halo,
.rail-language-switcher .terminal--dari .terminal__core { fill: rgb(var(--dari-rgb)); }
.rail-language-switcher .terminal--dari .terminal__ring { --terminal-accent: var(--dari-rgb); }
.rail-language-switcher .terminal--en .terminal__halo,
.rail-language-switcher .terminal--en .terminal__core { fill: rgb(var(--en-rgb)); }
.rail-language-switcher .terminal--en .terminal__ring { --terminal-accent: var(--en-rgb); }
.rail-language-switcher .terminal--ru .terminal__halo,
.rail-language-switcher .terminal--ru .terminal__core { fill: rgb(var(--ru-rgb)); }
.rail-language-switcher .terminal--ru .terminal__ring { --terminal-accent: var(--ru-rgb); }
.rail-language-switcher .terminal-stems line {
  stroke: url(#steelGradient);
  stroke-width: 6.15;
  vector-effect: non-scaling-stroke;
  stroke-linecap: round;
}
.rail-language-switcher .terminal-stems line::after { content: none; }
.rail-language-switcher .technical-marks path {
  fill: none;
  stroke: rgba(177,193,202,.3);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}

/* Language controls */
.rail-language-switcher .language-option {
  position: absolute;
  top: -3px;
  width: 52px;
  height: 60px;
  padding: 4px 2px 2px;
  border: 0;
  border-radius: 15px;
  color: var(--muted);
  background: transparent;
  text-decoration: none;
  display: grid;
  place-items: center;
  align-content: start;
  gap: 3px;
  cursor: pointer;
  z-index: 4;
  transition: color 180ms ease;
}
.rail-language-switcher .language-option::before {
  content: "";
  position: absolute;
  inset: 1px;
  border: 1px solid transparent;
  border-radius: 14px;
  background: currentColor;
  opacity: 0;
  transform: scale(.91);
  transition: opacity 180ms ease, transform 210ms cubic-bezier(.65,0,.35,1), border-color 180ms ease;
}
.rail-language-switcher .language-option:hover::before { opacity: .04; transform: scale(1); }
.rail-language-switcher .language-option:focus-visible {
  outline: 2px solid rgba(225,235,240,.86);
  outline-offset: 3px;
}
.rail-language-switcher .language-option:focus-visible::before { opacity: .045; }
.rail-language-switcher .language-option--fa { left: 5px; }
.rail-language-switcher .language-option--dari { left: 61px; }
.rail-language-switcher .language-option--en { right: 61px; }
.rail-language-switcher .language-option--ru { right: 5px; }
.rail-language-switcher .language-option__code,
.rail-language-switcher .language-option__name { position: relative; z-index: 1; }
.rail-language-switcher .language-option__code { font-size: .72rem; font-weight: 790; letter-spacing: .105em; }
.rail-language-switcher .language-option__name { color: #adbac1; font-size: .615rem; line-height: 1.14; white-space: nowrap; }
.rail-language-switcher .language-option--fa .language-option__name,
.rail-language-switcher .language-option--dari .language-option__name { font-family: var(--font-fa); }


.rail-language-switcher .language-switcher[data-busy="true"] .language-option {
  pointer-events: none;
}
.rail-language-switcher .language-switcher[data-navigating="true"] .language-option {
  cursor: progress;
}
.rail-language-switcher .language-option[aria-current="page"] {
  cursor: default;
}

.rail-language-switcher .language-switcher[data-language="fa"] { --active-rgb: var(--fa-rgb); }
.rail-language-switcher .language-switcher[data-language="fa-AF"] { --active-rgb: var(--dari-rgb); }
.rail-language-switcher .language-switcher[data-language="en"] { --active-rgb: var(--en-rgb); }
.rail-language-switcher .language-switcher[data-language="ru"] { --active-rgb: var(--ru-rgb); }
.rail-language-switcher .language-switcher[data-language="fa"] .language-option--fa { color: #ffe5bd; }
.rail-language-switcher .language-switcher[data-language="fa-AF"] .language-option--dari { color: #f1d4c3; }
.rail-language-switcher .language-switcher[data-language="en"] .language-option--en { color: #d9f4ff; }
.rail-language-switcher .language-switcher[data-language="ru"] .language-option--ru { color: #e1f1fa; }


/* Live Hero integration */
.v7-rail-lighting > .rail-language-switcher {
  position: absolute;
  z-index: calc(var(--z-content) + 5);
  inset: 0;
  pointer-events: none;
}

.v7-rail-lighting > .rail-language-switcher > .language-switcher {
  position: absolute;
  bottom: clamp(2rem, 7vh, 4.5rem);
  left: clamp(1rem, 4vw, 4.5rem);
  pointer-events: auto;
}

.rail-language-switcher__toggle {
  display: none;
}

@media (max-width: 64rem) and (min-width: 48rem) {
  .rail-language-switcher {
    --switch-width: 224px;
    --switch-height: 340px;
    --radius: 27px;
  }

  .v7-rail-lighting > .rail-language-switcher > .language-switcher {
    bottom: 1.25rem;
    left: 1.25rem;
  }

  .rail-language-switcher .language-option--fa { left: 1px; }
  .rail-language-switcher .language-option--dari { left: 52px; }
  .rail-language-switcher .language-option--en { right: 52px; }
  .rail-language-switcher .language-option--ru { right: 1px; }
}

@media (min-width: 48rem) and (max-height: 50rem) {
  .v7-rail-lighting > .rail-language-switcher > .language-switcher {
    transform: scale(.88);
    transform-origin: bottom left;
  }
}

@media (max-width: 47.99rem) {
  .rail-language-switcher {
    --switch-width: 202px;
    --switch-height: 314px;
    --radius: 24px;
  }

  .rail-language-switcher__toggle {
    position: absolute;
    z-index: calc(var(--z-content) + 7);
    top: max(6.35rem, calc(env(safe-area-inset-top) + 5.35rem));
    left: max(1rem, env(safe-area-inset-left));
    display: inline-flex;
    min-height: 2.75rem;
    align-items: center;
    gap: .5rem;
    padding: .55rem .8rem;
    border: 1px solid rgb(195 211 220 / .26);
    border-radius: 3px;
    background:
      linear-gradient(145deg, rgb(255 255 255 / .055), transparent 42%),
      rgb(7 15 21 / .76);
    box-shadow:
      0 12px 28px rgb(0 0 0 / .28),
      inset 0 1px 0 rgb(255 255 255 / .1);
    color: #edf3f6;
    font: 700 .76rem/1 var(--font-fa);
    -webkit-backdrop-filter: blur(10px) saturate(90%);
    backdrop-filter: blur(10px) saturate(90%);
    cursor: pointer;
    pointer-events: auto;
  }

  .rail-language-switcher__toggle > span:first-child {
    color: #dcecf2;
    font-family: var(--font-ui);
    letter-spacing: .08em;
  }

  .rail-language-switcher__toggle:active {
    transform: scale(.98);
  }

  .rail-language-switcher__toggle:focus-visible {
    outline: 2px solid #e7f5fa;
    outline-offset: 3px;
  }

  .rail-language-switcher__toggle[aria-expanded="true"] {
    position: fixed;
    top: max(.85rem, env(safe-area-inset-top));
    z-index: calc(var(--z-menu) + 12);
  }

  .v7-rail-lighting > .rail-language-switcher > .language-switcher {
    position: fixed;
    z-index: calc(var(--z-menu) + 10);
    top: max(4.5rem, calc(env(safe-area-inset-top) + 3.75rem));
    right: auto;
    bottom: auto;
    left: 50%;
    display: none;
    transform: translateX(-50%);
    pointer-events: auto;
  }

  .rail-language-switcher[data-mobile-open="true"] > .language-switcher {
    display: block;
  }

  .rail-language-switcher .language-switcher__header {
    top: 12px;
    right: 13px;
    left: 13px;
  }

  .rail-language-switcher .language-switcher__footer {
    right: 13px;
    bottom: 10px;
    left: 13px;
  }

  .rail-language-switcher .turnout {
    inset: 27px 4px 37px;
  }

  .rail-language-switcher .language-option {
    width: 46px;
    height: 55px;
  }

  .rail-language-switcher .language-option--fa { left: -1px; }
  .rail-language-switcher .language-option--dari { left: 43px; }
  .rail-language-switcher .language-option--en { right: 43px; }
  .rail-language-switcher .language-option--ru { right: -1px; }
  .rail-language-switcher .language-option__code { font-size: .65rem; }
  .rail-language-switcher .language-option__name { font-size: .54rem; }
}

@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .rail-language-switcher__toggle {
    background: rgb(7 15 21 / .94);
  }
}

@media (prefers-reduced-transparency: reduce) {
  .rail-language-switcher__toggle {
    background: rgb(7 15 21 / .96);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .rail-language-switcher *,
  .rail-language-switcher *::before,
  .rail-language-switcher *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }
}