body { 
      font-family: 'SF Pro Display', 'Segoe UI', Tahoma, Arial, sans-serif; 
      padding: 0; 
      background: radial-gradient(circle at center, #0B192C 0%, #000000 100%);
      color: #fff; 
      margin: 0;
      position: relative;
      min-height: 100vh;
      overflow: hidden;
      box-sizing: border-box;
      user-select: none;
    }
    body::before {
      content: '';
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: radial-gradient(circle at center, rgba(14, 165, 233, 0.15) 0%, transparent 60%);
      z-index: -1;
      pointer-events: none;
    }
    h2 {
      text-align: center;
      color: #0ea5e9;
      margin-top: 12px;
      margin-bottom: 5px;
      font-weight: 300;
      letter-spacing: 3px;
      text-transform: uppercase;
      font-size: 1.6em;
      padding-bottom: 10px;
      text-shadow: 0 0 12px rgba(14, 165, 233, 0.6);
      border-bottom: 1px solid rgba(14, 165, 233, 0.2);
    }
    /* The version, small, over the left end of the heading's rule: its left
       edge is the h2's left edge because both fill the same column. Filled
       from the app manifest at start-up; the line keeps its height while
       empty, so the heading does not move when the number arrives. */
    .app-version {
      box-sizing: content-box;
      padding-top: 8px;
      height: 12px;
      line-height: 12px;
      font-size: 0.62em;
      font-weight: 400;
      letter-spacing: 1.5px;
      text-align: left;
      color: #0ea5e9;
      opacity: 0.75;
      text-shadow: 0 0 6px rgba(14, 165, 233, 0.35);
      font-variant-numeric: tabular-nums;
    }
    .app-version + h2 { margin-top: 4px; }
    .specs {
      text-align: center;
      font-size: 0.75em;
      color: #7dd3fc;
      opacity: 0.8;
      text-transform: uppercase;
      letter-spacing: 2px;
      margin-bottom: 22px;
      /* Two lines of room whatever the settings: the text changes with every
         slider move, and a line that grew or shrank moved everything below. */
      line-height: 1.5;
      min-height: 3em;
    }
    /* Filter on the first line, output on the second — never wrapped. */
    .specs-line { display: block; white-space: nowrap; }

    .prop-block { margin-top: 12px; margin-bottom: 8px; position: relative; }
    label { font-size: 0.8em; color: #7dd3fc; text-transform: uppercase; letter-spacing: 1px; }
    select { 
      width: 100%; 
      padding: 12px; 
      margin-top: 10px; 
      border-radius: 8px; 
      cursor: pointer; 
      background: rgba(15, 23, 42, 0.8); 
      color: #bae6fd; 
      border: 1px solid rgba(14, 165, 233, 0.4); 
      font-size: 1em;
      appearance: none;
      outline: none;
      transition: all 0.3s ease;
      backdrop-filter: blur(5px);
    }
    select:focus { border-color: #38bdf8; box-shadow: 0 0 10px rgba(56, 189, 248, 0.3); }
    
    /* ═══ Tap Slider ═══ */
    .tap-slider-container {
      margin-top: 8px;
      position: relative;
    }
    .tap-slider-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 6px;
    }
    .tap-value {
      font-size: 1.1em;
      font-weight: 500;
      color: #c4b5fd;
      text-shadow: 0 0 8px rgba(167, 139, 250, 0.5);
      letter-spacing: 1px;
    }
    input[type="range"] {
      -webkit-appearance: none;
      width: 100%;
      height: 6px;
      border-radius: 3px;
      background: linear-gradient(90deg, rgba(124, 58, 237, 0.3) 0%, rgba(124, 58, 237, 0.6) 100%);
      outline: none;
    }
    input[type="range"]::-webkit-slider-thumb {
      -webkit-appearance: none;
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: linear-gradient(135deg, #a78bfa 0%, #7c3aed 100%);
      cursor: pointer;
      box-shadow: 0 0 10px rgba(124, 58, 237, 0.6);
      transition: transform 0.2s ease;
    }
    input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.2); }
    .tap-marks {
      display: flex;
      justify-content: space-between;
      margin-top: 4px;
      padding: 0 2px;
    }
    .tap-marks span {
      font-size: 0.58em;
      color: rgba(167, 139, 250, 0.5);
      letter-spacing: 0.5px;
      transition: color 0.2s ease;
    }
    /* A setting this installation has no filter file for. Struck through
       rather than hidden: the slider still reaches it, and the panel below
       names the download that would make it real. */
    .tap-marks span.mark-off {
      color: rgba(148, 163, 184, 0.35);
      text-decoration: line-through;
    }

    /* ═══ Filter availability notice ═══ */
    .filter-avail {
      display: none;
      margin-top: 10px;
      padding: 8px 11px;
      border-radius: 6px;
      border: 1px solid rgba(251, 191, 36, 0.35);
      background: rgba(120, 53, 15, 0.18);
      font-size: 0.72em;
      line-height: 1.5;
      color: #fcd34d;
    }
    .filter-avail.is-empty {
      border-color: rgba(239, 68, 68, 0.4);
      background: rgba(127, 29, 29, 0.2);
      color: #fca5a5;
    }
    .filter-avail .fa-head { display: block; font-weight: 600; }
    .filter-avail .fa-link {
      display: block;
      margin-top: 3px;
      color: #7dd3fc;
      cursor: pointer;
      text-decoration: underline;
      text-underline-offset: 2px;
      word-break: break-all;
    }
    .filter-avail .fa-link:hover { color: #bae6fd; }
    /* Custom Filter */
    .custom-filter-row {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-top: 8px;
    }
    .custom-filter-btn {
      flex: 1;
      padding: 8px 12px;
      border-radius: 6px;
      border: 1px solid rgba(14, 165, 233, 0.4);
      background: rgba(15, 23, 42, 0.8);
      color: #7dd3fc;
      font-size: 0.75em;
      cursor: pointer;
      text-transform: uppercase;
      letter-spacing: 1px;
      transition: all 0.3s ease;
    }
    .custom-filter-btn:hover {
      border-color: #38bdf8;
      background: rgba(14, 165, 233, 0.15);
      box-shadow: 0 0 8px rgba(56, 189, 248, 0.2);
    }
    .custom-filter-btn.active {
      border-color: #10b981;
      background: rgba(16, 185, 129, 0.15);
      color: #6ee7b7;
    }
    .custom-filter-clear {
      padding: 8px 12px;
      border-radius: 6px;
      border: 1px solid rgba(239, 68, 68, 0.4);
      background: rgba(15, 23, 42, 0.8);
      color: #fca5a5;
      font-size: 0.75em;
      cursor: pointer;
      transition: all 0.3s ease;
      display: none;
    }
    .custom-filter-clear:hover {
      border-color: #ef4444;
      background: rgba(239, 68, 68, 0.15);
    }
    .custom-filter-info {
      font-size: 0.7em;
      color: #6ee7b7;
      text-align: center;
      margin-top: 4px;
      display: none;
    }

    /* ═══ Main Action Button ═══ */
    .action-btn { 
      width: 100%; 
      padding: 15px; 
      margin-top: 20px; 
      cursor: pointer; 
      background: linear-gradient(135deg, #7c3aed 0%, #4f46e5 100%); 
      color: #fff; 
      border: none; 
      border-radius: 30px; 
      font-weight: 500;
      font-size: 1.1em;
      text-transform: uppercase;
      letter-spacing: 2px;
      transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
      box-shadow: 0 4px 15px rgba(124, 58, 237, 0.4);
    }
    .action-btn:hover { 
      box-shadow: 0 6px 20px rgba(124, 58, 237, 0.6); 
      transform: translateY(-2px);
    }
    .action-btn:active { transform: translateY(1px); }
    #status { 
      margin-top: 20px; 
      font-size: 0.9em; 
      color: #7dd3fc; 
      text-align: center; 
      font-weight: 400;
      letter-spacing: 0.5px;
    }
    
    /* ═══ Settings Button (Pill) ═══ */
    .settings-btn {
      width: auto;
      padding: 10px 28px;
      border-radius: 20px;
      background: rgba(15, 23, 42, 0.8);
      border: 1px solid rgba(14, 165, 233, 0.4);
      color: #7dd3fc;
      font-size: 0.82em;
      cursor: pointer;
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 8px;
      margin: 18px auto 5px auto;
      transition: all 0.3s ease;
      letter-spacing: 1.5px;
      text-transform: uppercase;
      box-shadow: none;
      backdrop-filter: blur(5px);
    }
    .settings-btn:hover { 
      background: rgba(14, 165, 233, 0.15);
      border-color: #38bdf8; 
      color: #fff;
      transform: translateY(-1px);
      box-shadow: 0 4px 12px rgba(14, 165, 233, 0.25);
    }
    .settings-btn:active { transform: translateY(0); }

    /* ═══ Modal ═══ */
    .modal-overlay {
      display: none;
      position: fixed;
      top: 0; left: 0; width: 100%; height: 100%;
      background: rgba(0, 0, 0, 0.7);
      backdrop-filter: blur(8px);
      z-index: 100;
      justify-content: center;
      align-items: center;
    }
    .modal-content {
      background: radial-gradient(circle at top, #1e293b 0%, #0f172a 100%);
      padding: 25px;
      border-radius: 12px;
      width: 90%;
      max-width: 450px;
      border: 1px solid rgba(14, 165, 233, 0.4);
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
      max-height: 90vh;
      overflow-y: auto;
    }
    .modal-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 20px;
    }
    .modal-header h3 { margin: 0; color: #0ea5e9; font-weight: 300; letter-spacing: 2px; }

    /* ═══ Close Button (scoped — NOT inheriting global styles) ═══ */
    .close-btn {
      background: none !important;
      border: none !important;
      color: #94a3b8 !important;
      font-size: 1.4em !important;
      cursor: pointer !important;
      padding: 4px 10px !important;
      margin: 0 !important;
      width: auto !important;
      box-shadow: none !important;
      line-height: 1 !important;
      border-radius: 6px !important;
      transition: color 0.2s ease, background 0.2s ease !important;
      letter-spacing: 0 !important;
      text-transform: none !important;
    }
    .close-btn:hover {
      color: #fff !important;
      background: rgba(239, 68, 68, 0.2) !important;
      transform: none !important;
      box-shadow: none !important;
    }
    .close-btn:active { transform: none !important; }

    /* ═══════════════════════════════════════════ */
    /* ═══ MODE SWITCHER & SLIDE LAYOUT ═══       */
    /* ═══════════════════════════════════════════ */
    
    .mode-switcher {
      display: flex;
      justify-content: center;
      gap: 0;
      margin: 14px 30px 0 30px;
    }

    .mode-btn {
      flex: 1;
      padding: 10px 0;
      cursor: pointer;
      background: rgba(15, 23, 42, 0.6);
      border: 1px solid rgba(14, 165, 233, 0.2);
      color: #64748b;
      font-size: 0.78em;
      font-weight: 500;
      text-transform: uppercase;
      letter-spacing: 2px;
      transition: all 0.4s ease;
      text-align: center;
    }
    .mode-btn:first-child { border-radius: 20px 0 0 20px; }
    .mode-btn:last-child { border-radius: 0 20px 20px 0; }
    .mode-btn.active {
      background: rgba(14, 165, 233, 0.2);
      border-color: rgba(14, 165, 233, 0.5);
      color: #7dd3fc;
      box-shadow: 0 0 15px rgba(14, 165, 233, 0.15);
    }
    .mode-btn:hover:not(.active) {
      background: rgba(14, 165, 233, 0.08);
      color: #94a3b8;
    }

    .slide-panel {
      width: 100%;
      padding: 0 30px 30px 30px;
      box-sizing: border-box;
      /* No scrollbar: the window height is sized so the whole panel fits,
         including the progress bar and status line once a run starts. */
      overflow-y: hidden;
      height: 100%;
      height: calc(100vh - 20px);
    }

    /* ═══ CONVERTER SPECIFIC ═══ */
    .conv-section-title {
      font-size: 0.8em;
      color: #7dd3fc;
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-top: 12px;
      margin-bottom: 10px;
    }



    /* ═══ Smart Drop Zone ═══ */
    .smart-drop-zone {
      position: relative;
      border: 2px dashed rgba(14, 165, 233, 0.3);
      border-radius: 16px;
      /* Fixed height — always the same, independent of list length */
      height: 185px;
      margin-top: 8px;
      overflow: hidden;
      transition: border-color 0.3s ease, box-shadow 0.3s ease;
      cursor: pointer;
      background: rgba(14, 165, 233, 0.02);
      display: flex;
      flex-direction: column;
    }
    .smart-drop-zone:hover {
      border-color: rgba(14, 165, 233, 0.5);
    }
    .smart-drop-zone.drag-over {
      border-color: #38bdf8;
      box-shadow: 0 0 30px rgba(14, 165, 233, 0.2);
    }

    /* Empty state */
    .dz-empty {
      position: absolute;
      top: 0; left: 0; right: 0; bottom: 0;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 6px;
      pointer-events: none;
      transition: opacity 0.3s ease;
      z-index: 1;
    }
    .dz-empty.hidden { opacity: 0; }
    .dz-empty-icon { font-size: 2em; opacity: 0.6; }
    .dz-empty-text { font-size: 0.85em; color: #7dd3fc; font-weight: 300; letter-spacing: 1px; }
    .dz-empty-hint { font-size: 0.62em; color: #475569; }

    /* Drag hover overlay — semi-transparent so file list shows through */
    .dz-hover {
      position: absolute;
      top: 0; left: 0; right: 0; bottom: 0;
      background: rgba(14, 165, 233, 0.18);
      backdrop-filter: blur(3px);
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 6px;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.2s ease;
      z-index: 20;
      border-radius: 14px;
    }
    .smart-drop-zone.drag-over .dz-hover { opacity: 1; }
    .dz-hover-icon { font-size: 2em; filter: drop-shadow(0 0 8px #38bdf8); }
    .dz-hover-text { font-size: 0.9em; color: #38bdf8; font-weight: 500; letter-spacing: 1px; }
    .dz-hover-sub { font-size: 0.65em; color: #7dd3fc; }

    /* File list inside the drop zone */
    .dz-file-list {
      position: relative;
      z-index: 2;
      padding: 6px 6px;
      overflow-y: auto;
      flex: 1;
      /* max-height fills the fixed 185px zone */
      max-height: 179px;
    }
    .dz-file-list:empty { pointer-events: none; }

    /* File items */
    .file-item {
      display: flex;
      align-items: center;
      gap: 7px;
      padding: 5px 8px;
      border-radius: 7px;
      margin-bottom: 3px;
      font-size: 0.71em;
      background: rgba(15, 23, 42, 0.75);
      border: 1px solid rgba(14, 165, 233, 0.13);
      color: #94a3b8;
      transition: background 0.2s, border-color 0.2s, opacity 0.3s;
      position: relative;   /* for .file-item-progress overlay */
      overflow: hidden;
      cursor: default;      /* item rows are NOT clickable drop-zone targets */
      pointer-events: none; /* Let events pierce through to the dropzone underneath */
    }
    /* Per-file inline progress bar (background fill) */
    .file-item-progress {
      position: absolute;
      top: 0; left: 0; bottom: 0;
      width: 0%;
      background: linear-gradient(90deg, rgba(124,58,237,0.22), rgba(56,189,248,0.10));
      border-radius: 7px;
      transition: width 0.2s linear;
      pointer-events: none;
      z-index: 0;
    }
    .file-item > *:not(.file-item-progress) { position: relative; z-index: 1; }

    .file-item.done .file-item-progress  { width: 100%; background: linear-gradient(90deg, rgba(16,185,129,0.18), rgba(16,185,129,0.06)); }

    /* Status variants */
    .file-item.done      { border-color: rgba(16, 185, 129, 0.30); color: #6ee7b7; }
    .file-item.active    { border-color: rgba(124, 58, 237, 0.45); color: #c4b5fd; background: rgba(124,58,237,0.08); }
    .file-item.error     { border-color: rgba(239, 68, 68, 0.30);  color: #fca5a5; }
    .file-item.queued    { border-color: rgba(251, 191, 36, 0.25); color: #fcd34d; }
    .file-item.cancelled { border-color: rgba(100,116,139, 0.25);  color: #475569; opacity: 0.65; }
    .file-item.dismissing{ border-color: rgba(251, 191, 36, 0.30); color: #92400e; opacity: 0.8; } /* cancelling current */

    .file-item-icon    { font-size: 1.0em; flex-shrink: 0; }
    .file-item-name    { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .file-item-badge   { font-size: 0.75em; opacity: 0.8; flex-shrink: 0; pointer-events: auto; }
    
    .badge-hp {
      color: #a78bfa;
      background: rgba(167, 139, 250, 0.15);
      border: 1px solid rgba(167, 139, 250, 0.3);
      font-weight: 600;
      opacity: 1;
      padding: 1px 4px;
      border-radius: 4px;
      box-shadow: 0 0 5px rgba(167, 139, 250, 0.2);
    }
    .badge-sub {
      color: #60a5fa;
      background: rgba(96, 165, 250, 0.15);
      border: 1px solid rgba(96, 165, 250, 0.3);
      font-weight: 600;
      opacity: 1;
      padding: 1px 4px;
      border-radius: 4px;
      box-shadow: 0 0 5px rgba(96, 165, 250, 0.2);
    }
    .badge-aa {
      color: #10b981;
      background: rgba(16, 185, 129, 0.15);
      border: 1px solid rgba(16, 185, 129, 0.3);
      font-weight: 600;
      opacity: 1;
      padding: 1px 4px;
      border-radius: 4px;
      box-shadow: 0 0 5px rgba(16, 185, 129, 0.2);
    }
    /* "Lamp off": the Adaptive Apodizer analyzed the track and deliberately
       left it untouched — dim grey, no glow; the tooltip explains why. */
    .badge-aa-off {
      color: #64748b;
      background: rgba(100, 116, 139, 0.10);
      border: 1px solid rgba(100, 116, 139, 0.25);
      font-weight: 500;
      opacity: 0.75;
      box-shadow: none;
    }
    .badge-verified {
      color: #38bdf8;
      background: rgba(14, 165, 233, 0.15);
      border: 1px solid rgba(14, 165, 233, 0.3);
      font-weight: 600;
      opacity: 1;
      padding: 1px 4px;
      border-radius: 4px;
      box-shadow: 0 0 5px rgba(14, 165, 233, 0.2);
    }
    .badge-verified-fail {
      color: #f87171;
      background: rgba(239, 68, 68, 0.15);
      border: 1px solid rgba(239, 68, 68, 0.4);
      font-weight: 600;
      opacity: 1;
      padding: 1px 4px;
      border-radius: 4px;
      box-shadow: 0 0 5px rgba(239, 68, 68, 0.25);
    }
    .badge-bad {
      color: #fca5a5;
      background: rgba(239, 68, 68, 0.2);
      border: 1px solid rgba(239, 68, 68, 0.5);
      font-weight: 700;
      opacity: 1;
      padding: 1px 5px;
      border-radius: 4px;
      box-shadow: 0 0 6px rgba(239, 68, 68, 0.3);
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .badge-skip {
      color: #fcd34d;
      background: rgba(251, 191, 36, 0.15);
      border: 1px solid rgba(251, 191, 36, 0.4);
      font-weight: 700;
      opacity: 1;
      padding: 1px 5px;
      border-radius: 4px;
      box-shadow: 0 0 5px rgba(251, 191, 36, 0.2);
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }


    .badge-container { display: flex; gap: 4px; align-items: center; }
    .file-item-divider {
      width: 1px;
      height: 16px;
      background-color: rgba(255, 255, 255, 0.1);
      margin: 0 6px;
      flex-shrink: 0;
    }

    /* X close button - Badge Style */
    .file-item-close {
      flex-shrink: 0;
      width: 20px; height: 18px;
      border-radius: 4px;
      border: 1px solid rgba(239, 68, 68, 0.3);
      background: rgba(239, 68, 68, 0.15);
      color: #ef4444;
      font-size: 0.8em;
      font-weight: 600;
      cursor: pointer;
      display: flex; align-items: center; justify-content: center;
      padding: 0; line-height: 1;
      transition: all 0.15s ease-out;
      pointer-events: auto;
      box-shadow: 0 0 5px rgba(239, 68, 68, 0.2);
      opacity: 0.15; /* Barely visible until hovered */
    }
    
    .file-item-close:hover { 
      background: rgba(239, 68, 68, 0.85); 
      color: white; 
      transform: scale(1.05);
      box-shadow: 0 0 8px rgba(239, 68, 68, 0.4);
      opacity: 1; /* Fully visible on hover */
    }
    .file-item:hover .file-item-close { 
      /* Optionally slightly more visible when row is hovered, but usually we just let it stay at 0.15 until directly hovered */
      opacity: 0.4;
    }
    .file-item.active .file-item-close        { color: rgba(239, 68, 68, 0.95); background: rgba(239, 68, 68, 0.25); opacity: 0.6; }
    .file-item.active .file-item-close:hover  { background: #ef4444; color: white; opacity: 1; }
    /* Cursor: only the drop zone empty area and X buttons are pointer */
    .dz-file-list { cursor: default; }


    /* Progress */
    .conv-progress-wrap {
      margin-top: 15px;
      display: none;
    }
    .conv-progress-bar {
      width: 100%;
      height: 6px;
      border-radius: 3px;
      background: rgba(15, 23, 42, 0.8);
      overflow: hidden;
      margin-top: 8px;
    }
    .conv-progress-fill {
      height: 100%;
      border-radius: 3px;
      background: linear-gradient(90deg, #7c3aed, #38bdf8);
      width: 0%;
      transition: width 0.3s ease;
    }
    .conv-hp-glow {
      background: linear-gradient(90deg, #a78bfa, #c084fc);
      box-shadow: 0 0 10px rgba(167, 139, 250, 0.5);
    }
    .conv-progress-text {
      display: flex;
      justify-content: space-between;
      font-size: 0.7em;
      color: #94a3b8;
      margin-top: 4px;
    }
    .conv-status {
      margin-top: 8px;
      font-size: 0.75em;
      color: #7dd3fc;
      text-align: center;
      /* Single line, truncated with ellipsis; full text in title tooltip */
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }


    /* ── Hold-to-Cancel button (inside drop zone, bottom-center) ── */
    .dz-cancel-btn {
      position: absolute;
      bottom: 8px;
      left: 50%;
      transform: translateX(-50%);
      z-index: 15;
      width: 130px;
      height: 26px;
      border-radius: 13px;
      border: 1px solid rgba(239, 68, 68, 0.45);
      background: rgba(15, 23, 42, 0.6);
      color: rgba(252, 165, 165, 0.55);
      font-size: 0.65em;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      cursor: default;
      display: none;           /* shown only during conversion */
      align-items: center;
      justify-content: center;
      overflow: hidden;
      opacity: 0.5;
      transition: opacity 0.25s ease, color 0.2s, border-color 0.2s;
      user-select: none;
      -webkit-user-select: none;
    }
    .dz-cancel-btn:hover {
      opacity: 1;
      color: #fca5a5;
      border-color: rgba(239, 68, 68, 0.75);
    }
    /* Fill bar animates left→right via JS during hold */
    .dz-cancel-fill {
      position: absolute;
      top: 0; left: 0; bottom: 0;
      width: 0%;
      background: rgba(239, 68, 68, 0.3);
      border-radius: 13px;
      pointer-events: none;
      z-index: 0;
    }
    .dz-cancel-label {
      position: relative;
      z-index: 1;
      pointer-events: none;
    }

    /* Custom Webkit Scrollbar for Premium Dark UI */
    ::-webkit-scrollbar {
      width: 6px;
      height: 6px;
    }
    ::-webkit-scrollbar-track {
      background: transparent; 
    }
    ::-webkit-scrollbar-thumb {
      background: rgba(14, 165, 233, 0.4); /* subtle turquoise */
      border-radius: 4px;
    }
    ::-webkit-scrollbar-thumb:hover {
      background: rgba(14, 165, 233, 0.7);
    }
    ::-webkit-scrollbar-corner {
      background: transparent;
    }

/* Status line states — the text colours itself by what it is saying. */
.conv-status.is-busy  { color: #7dd3fc; }
.conv-status.is-ok    { color: #6ee7b7; }
.conv-status.is-error { color: #fca5a5; font-weight: 600; }