/* ── HUD Icon Button ──────────────────────────── */

.ar-hud__btn {
  position: fixed;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.88);
  border: none;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 1000;
  transition: all 0.2s ease;
  outline: none;
  padding: 0;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.ar-hud__btn:hover,
.ar-hud__btn:active { transform: scale(1.06); background: #ffffff; }

.ar-hud__btn--top-right    { top: max(env(safe-area-inset-top, 12px), 20px); right: 20px; }
.ar-hud__btn--top-left     { top: max(env(safe-area-inset-top, 12px), 20px); left: 20px; }
.ar-hud__btn--bottom-right { bottom: max(env(safe-area-inset-bottom, 12px), 20px); right: 20px; }
.ar-hud__btn--bottom-left  { bottom: max(env(safe-area-inset-bottom, 12px), 20px); left: 20px; }

.ar-hud__icon {
  width: 22px;
  height: 22px;
  object-fit: contain;
  pointer-events: none;
}

/* ── Settings Overlay ────────────────────────── */

.settings-overlay {
  position: fixed;
  inset: 0;
  z-index: 1001;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s;
}

.settings-overlay--open { opacity: 1; visibility: visible; }

/* ── Settings Dialog ─────────────────────────── */

.settings-dialog {
  background: #ffffff;
  border-radius: 20px;
  padding: 24px 22px;
  max-width: 340px;
  width: 85%;
  color: var(--secondary);
  overflow: visible;
  transform: translateY(12px) scale(0.97);
  opacity: 0;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.25s ease;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.15);
}

.settings-overlay--open .settings-dialog {
  transform: translateY(0) scale(1);
  opacity: 1;
}

/* Header */
.settings-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.settings-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--secondary);
  margin: 0;
}

.settings-close-x {
  width: 32px;
  height: 32px;
  background: rgba(0, 0, 0, 0.05);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  position: relative;
  outline: none;
  flex-shrink: 0;
  transition: background 0.2s ease;
}

.settings-close-x:hover { background: rgba(0, 0, 0, 0.1); }

.settings-close-x::before,
.settings-close-x::after {
  content: '';
  position: absolute;
  width: 14px;
  height: 1.5px;
  background: var(--secondary);
  top: 50%;
  left: 50%;
}

.settings-close-x::before { transform: translate(-50%, -50%) rotate(45deg); }
.settings-close-x::after  { transform: translate(-50%, -50%) rotate(-45deg); }

/* Sections */
.settings-section { margin-bottom: 18px; }

.settings-section-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(0, 50, 85, 0.4);
  margin-bottom: 8px;
}

/* Toggle row */
.settings-toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.settings-toggle-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Toggle switch */
.settings-toggle { cursor: pointer; display: flex; align-items: center; }
.settings-toggle__input { display: none; }

.settings-toggle__track {
  width: 44px;
  height: 24px;
  border-radius: 12px;
  background: #e0e5e8;
  position: relative;
  transition: background 0.3s ease;
}

.settings-toggle__input:checked + .settings-toggle__track {
  background: var(--primary);
}

.settings-toggle__thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #ffffff;
  transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

.settings-toggle__input:checked + .settings-toggle__track .settings-toggle__thumb {
  left: 22px;
}

.settings-toggle__status {
  font-size: 12px;
  font-weight: 500;
  color: rgba(0, 50, 85, 0.45);
  min-width: 24px;
}

/* Language grid in settings */
.settings-lang-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
  direction: ltr;
}

.settings-lang-btn {
  background: rgba(77, 195, 207, 0.08);
  border: 1px solid rgba(77, 195, 207, 0.2);
  color: var(--secondary);
  padding: 8px 4px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
  line-height: 1;
  outline: none;
}

.settings-lang-btn:hover { background: rgba(77, 195, 207, 0.15); }
.settings-lang-btn.is-active { background: var(--primary); color: #ffffff; border-color: var(--primary); }

/* Close button wrap */
.settings-close-wrap { margin-top: 20px; }

/* Small Mobile */
@media (max-width: 400px) {
  .settings-dialog { padding: 20px 18px; }
  .ar-hud__btn { width: 40px; height: 40px; }
  .ar-hud__icon { width: 18px; height: 18px; }
}

/* ── Tablet (768px+) ──────────────────── */

@media (min-width: 768px) {
  .ar-hud__btn {
    width: 52px;
    height: 52px;
    box-shadow: 0 3px 14px rgba(0, 0, 0, 0.1);
  }

  .ar-hud__btn--top-right { top: 28px; right: 28px; }
  .ar-hud__btn--top-left  { top: 28px; left: 28px; }

  .ar-hud__icon { width: 24px; height: 24px; }

  .settings-dialog {
    max-width: 400px;
    padding: 28px 26px;
    border-radius: 24px;
  }

  .settings-title { font-size: 22px; }

  .settings-section-label { font-size: 12px; }

  .settings-toggle__track { width: 48px; height: 26px; border-radius: 13px; }
  .settings-toggle__thumb { width: 22px; height: 22px; }
  .settings-toggle__input:checked + .settings-toggle__track .settings-toggle__thumb { left: 24px; }
  .settings-toggle__status { font-size: 13px; }

  .settings-lang-btn {
    padding: 10px 6px;
    font-size: 13px;
    border-radius: 10px;
  }
}

/* ── Desktop (1200px+) ────────────────── */

@media (min-width: 1200px) {
  .ar-hud__btn {
    width: 56px;
    height: 56px;
  }

  .ar-hud__btn--top-right { top: 32px; right: 32px; }
  .ar-hud__btn--top-left  { top: 32px; left: 32px; }

  .ar-hud__icon { width: 26px; height: 26px; }

  .settings-dialog {
    max-width: 440px;
    padding: 32px 30px;
  }

  .settings-title { font-size: 24px; }

  .settings-lang-btn { padding: 11px 8px; font-size: 14px; }

  .menu-btn--medium { padding: 12px 24px; font-size: 14px; }
}