/* ==========================================================================
   TOAST NOTIFICATION ON SETTINGS PAGE
   ========================================================================== */
.settings-toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(40px);
  background: rgba(18, 22, 38, 0.95);
  border: 1px solid var(--accent-teal, #10b981);
  color: #ffffff;
  padding: 12px 24px;
  border-radius: 9999px;
  font-size: 0.92rem;
  font-weight: 600;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.6), 0 0 20px rgba(16, 185, 129, 0.3);
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 99999;
}

.settings-toast.visible {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* ==========================================================================
   RESPONSIVE DESIGN (MOBILE & PC CENTRIC STUDIO MENU BAR)
   ========================================================================== */
@media (max-width: 960px) {
  .settings-studio-layout {
    grid-template-columns: 1fr;
    gap: 16px;
    margin-top: 14px;
  }
  .settings-menu-bar {
    position: sticky;
    top: 72px;
    z-index: 50;
    padding: 8px 8px;
    border-radius: 18px;
    margin-bottom: 8px;
    background: rgba(10, 12, 22, 0.95);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
  }
  .menu-bar-header {
    display: none;
  }
  .settings-nav-pills {
    flex-direction: row;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
    gap: 8px;
    padding: 2px 4px 6px;
  }
  .settings-nav-pills::-webkit-scrollbar {
    display: none;
  }
  .nav-pill-btn {
    width: auto;
    flex-shrink: 0;
    padding: 10px 15px;
    border-radius: 12px;
    gap: 8px;
    white-space: nowrap;
    min-height: 44px;
    -webkit-tap-highlight-color: transparent;
  }
  .nav-pill-btn:hover {
    transform: none;
  }
  .nav-pill-btn.active {
    transform: none;
  }
  .tab-desc {
    display: none;
  }
  .tab-title {
    font-size: 0.86rem;
  }
  .tab-icon {
    font-size: 1.15rem;
  }
}

@media (max-width: 768px) {
  .settings-header {
    padding: 0 14px;
    height: 64px;
  }
  .btn-back-main {
    padding: 7px 12px;
    font-size: 0.85rem;
    gap: 6px;
  }
  .settings-brand-badge {
    display: none;
  }
  .settings-menu-bar {
    top: 64px;
    padding: 6px 6px;
    border-radius: 14px;
  }
  .settings-container {
    padding: 16px 12px 60px;
  }
  .settings-hero-header {
    margin-bottom: 20px;
  }
  .settings-main-title {
    font-size: 1.65rem;
  }
  .settings-main-subtitle {
    font-size: 0.88rem;
  }
  .nav-pill-btn {
    padding: 8px 12px;
    font-size: 0.82rem;
    border-radius: 10px;
  }
  
  /* Hero Profile Card Mobile */
  .profile-hero-card {
    padding: 18px 16px;
    border-radius: 18px;
    margin-bottom: 20px;
  }
  .profile-top-wrap {
    flex-direction: column;
    text-align: center;
    gap: 14px;
  }
  .avatar-wrapper {
    width: 80px;
    height: 80px;
  }
  .profile-display-name {
    font-size: 1.45rem;
  }
  .profile-name-row {
    justify-content: center;
  }
  .profile-meta-row {
    justify-content: center;
    font-size: 0.78rem;
    gap: 10px;
  }
  .profile-actions-row {
    justify-content: center;
    width: 100%;
    flex-direction: column;
    gap: 10px;
  }
  .btn-primary-action, .btn-secondary-action, .btn-danger-action {
    width: 100%;
    justify-content: center;
    padding: 12px 18px;
    min-height: 44px;
    box-sizing: border-box;
    font-size: 0.92rem;
  }
  .profile-stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    padding-top: 18px;
  }
  .stat-card-lux {
    padding: 12px 12px;
    gap: 12px;
  }
  .stat-icon-circle {
    width: 38px;
    height: 38px;
  }
  .stat-lux-val {
    font-size: 1.25rem;
  }

  /* Section Cards Mobile */
  .settings-section-card {
    padding: 18px 16px;
    border-radius: 18px;
    margin-bottom: 20px;
  }
  .section-card-header {
    margin-bottom: 18px;
    padding-bottom: 12px;
    gap: 10px;
  }
  .section-icon-badge {
    width: 34px;
    height: 34px;
    border-radius: 8px;
  }
  .section-heading-text {
    font-size: 1.12rem;
  }
  .section-heading-desc {
    font-size: 0.80rem;
  }



  /* Setting Rows & Controls Mobile */
  .setting-item-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 14px 0;
  }
  .setting-item-row .setting-info {
    flex: 1 1 200px;
    min-width: 0;
  }
  .setting-item-row .setting-name {
    font-size: 0.95rem;
  }
  .setting-item-row .setting-hint {
    font-size: 0.80rem;
  }
  .setting-item-row .toggle-switch {
    margin-left: auto;
    flex-shrink: 0;
  }
  .setting-item-row .setting-select-lux,
  .setting-item-row .range-slider-wrap {
    width: 100%;
    margin-top: 4px;
  }
  .setting-select-lux {
    font-size: 16px !important; /* Prevents iOS Safari auto-zoom */
    min-height: 44px;
    padding: 10px 14px;
  }
  .range-slider-wrap {
    min-height: 40px;
  }
  .range-slider-input {
    touch-action: none;
    height: 8px;
  }
  .range-slider-input::-webkit-slider-thumb {
    width: 24px;
    height: 24px;
  }
  .setting-item-row .btn-secondary-action,
  .setting-item-row .btn-danger-action {
    width: 100%;
    justify-content: center;
    min-height: 44px;
  }

  /* Themes Mobile */
  .theme-cards-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .theme-card-option {
    padding: 12px 10px;
    border-radius: 14px;
  }
  .accent-palette-grid {
    gap: 12px;
    width: 100%;
  }
  .accent-color-swatch {
    width: 44px;
    height: 44px;
    border-radius: 12px;
  }

  /* Diagnostics Mobile */
  .diagnostic-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 14px;
  }
  .diagnostic-left {
    width: 100%;
  }
  .diagnostic-right {
    width: 100%;
    justify-content: flex-end;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 6px;
  }
  #btnTestPing {
    width: 100%;
    justify-content: center;
    min-height: 44px;
  }
}

/* Extra Small Phones (< 480px) */
@media (max-width: 480px) {
  .settings-header {
    padding: 0 10px;
  }
  .btn-back-main span {
    display: none;
  }
  .btn-back-main {
    padding: 8px 10px;
  }
  .settings-brand-title {
    font-size: 1.05rem;
  }
  .settings-header-right .btn-primary-action span {
    display: none;
  }
  .settings-header-right .btn-primary-action {
    padding: 8px 10px;
  }
  .settings-container {
    padding: 12px 8px 60px;
  }
  .profile-stats-grid {
    grid-template-columns: 1fr;
  }
  .theme-cards-grid {
    grid-template-columns: 1fr;
  }
  .eq-presets-grid {
    grid-template-columns: 1fr;
  }
}