:root{
    --bg0:#1b1815;
    --bg1:#2a2521;
    --metal-hi:#a6968a;
    --metal-mid:#6b5d52;
    --metal-lo:#332b24;
    --glass-a:#4a4038;
    --glass-b:#241f1a;
    --accent:#e8622c;
    --accent-dark:#a8431b;
    --ink:#f3ece2;
    --ink-dim:rgba(243,236,226,.42);
    --line:rgba(255,255,255,.55);
    --paper:#221e1a;
    --paper-2:#2c2721;
    --border:rgba(255,255,255,.10);
  }
  *{box-sizing:border-box;}
  body{
    margin:0;
    font-family:'Sarabun',sans-serif;
    background:radial-gradient(ellipse at 50% -10%, var(--bg1) 0%, var(--bg0) 65%);
    color:var(--ink);
    min-height:100vh;
    padding:44px 16px 60px;
    display:flex;
    flex-direction:column;
    align-items:center;
  }

  h1.page-title{
    font-family:'Noto Serif Thai',serif;
    font-weight:700;
    font-size:26px;
    text-align:center;
    margin:0 0 34px;
    color:#fff;
    text-shadow:0 0 18px rgba(255,255,255,.45), 0 0 3px rgba(255,255,255,.6);
  }

  /* ===== Panel ===== */
  .panel-wrap{ position:relative; width:100%; max-width:420px; padding-right:26px; }
  .panel{
    position:relative;
    background:linear-gradient(155deg, var(--metal-hi) 0%, var(--metal-mid) 45%, var(--metal-lo) 100%);
    border-radius:20px;
    padding:10px;
    box-shadow:0 24px 50px rgba(0,0,0,.55), inset 0 1px 0 rgba(255,255,255,.25);
  }
  .rivet{
    position:absolute; width:9px; height:9px; border-radius:50%;
    background:radial-gradient(circle at 35% 30%, #cfc2b6, #4a4038 70%);
    box-shadow:0 1px 2px rgba(0,0,0,.6);
  }
  .rivet.tl{ top:14px; left:14px; }
  .rivet.tr{ top:14px; right:14px; }
  .rivet.bl{ bottom:14px; left:14px; }
  .rivet.br{ bottom:14px; right:14px; }

  .glass{
    position:relative;
    background:
      linear-gradient(115deg, rgba(255,255,255,.10) 0%, rgba(255,255,255,0) 30%, rgba(255,255,255,0) 70%, rgba(255,255,255,.06) 100%),
      linear-gradient(180deg, var(--glass-a), var(--glass-b) 70%);
    border-radius:12px;
    padding:22px 18px 20px;
    box-shadow:inset 0 3px 10px rgba(0,0,0,.55), inset 0 0 0 1px rgba(0,0,0,.4);
    overflow:hidden;
  }

  .rolled-label{
    text-align:center;
    font-family:'Noto Serif Thai',serif;
    font-weight:600;
    font-size:13px;
    color:rgba(255,255,255,.4);
    margin:0 0 6px;
    letter-spacing:.5px;
  }

  .reel-window{
    position:relative;
    height:270px;
    overflow:hidden;
    -webkit-mask-image:linear-gradient(to bottom, transparent 0%, black 18%, black 82%, transparent 100%);
    mask-image:linear-gradient(to bottom, transparent 0%, black 18%, black 82%, transparent 100%);
  }
  .reel-list{
    position:absolute; left:0; top:0; width:100%;
    will-change:transform;
  }
  .reel-item{
    height:54px;
    display:flex; align-items:center; justify-content:center;
    text-align:center;
    padding:0 12px;
  }
  .reel-item span{
    font-family:'Noto Serif Thai',serif;
    font-weight:600;
    font-size:18px;
    color:rgba(255,255,255,.55);
    white-space:nowrap; overflow:hidden; text-overflow:ellipsis; max-width:100%;
  }
  .reel-item.hit span{
    font-weight:700;
    font-size:23px;
    color:#fff;
    text-shadow:0 0 16px rgba(255,255,255,.5);
  }

  .guide-line{
    position:absolute; left:8px; right:8px; height:1px;
    background:var(--line);
    pointer-events:none;
  }
  .tri{
    position:absolute; width:0; height:0; pointer-events:none;
  }
  .tri.left{ left:-2px; border-top:6px solid transparent; border-bottom:6px solid transparent; border-left:8px solid var(--accent); }
  .tri.right{ right:-2px; border-top:6px solid transparent; border-bottom:6px solid transparent; border-right:8px solid var(--accent); }

  /* ===== Lever, mounted on panel's right edge ===== */
  .lever-mount{
    position:absolute; right:-22px; top:50%; transform:translateY(-8px);
    width:26px; height:26px; border-radius:50%;
    background:radial-gradient(circle at 35% 30%, #d8c9bc, #6b5d52 60%, #332b24);
    box-shadow:0 2px 5px rgba(0,0,0,.5), inset 0 0 0 1px rgba(255,255,255,.2);
    z-index:3;
  }
  .lever-btn{
    position:absolute; left:calc(100% - 3px); top:50%;
    transform:translateY(-50%);
    transform-origin:left center;
    transition:transform .3s cubic-bezier(.4,0,.2,1);
    background:none; border:none; padding:0; cursor:pointer;
    display:flex; align-items:center;
    z-index:2;
  }
  .lever-btn:disabled{ cursor:not-allowed; opacity:.7; }
  .lever-knob{
    width:26px; height:26px; border-radius:50%;
    background:radial-gradient(circle at 35% 30%, #ff9a6b, var(--accent) 55%, var(--accent-dark));
    box-shadow:0 3px 7px rgba(0,0,0,.5), inset 0 0 0 2px rgba(255,255,255,.2);
    margin-left:-5px;
    z-index:1;
  }
  .lever-arm{
    position:relative;
    z-index:0;
    width:96px; height:8px;
    background:linear-gradient(180deg, #ff9a6b 0%, var(--accent) 48%, var(--accent-dark) 100%);
    border-radius:5px 0 0 5px;
  }
  .lever-btn.pulled{ transform:translateY(-50%) rotate(10deg); }

  .task-count-strip{
    text-align:center; margin-top:14px; font-size:12px; color:rgba(255,255,255,.4);
    letter-spacing:.3px;
  }
  .task-count-strip b{ color:rgba(255,255,255,.8); font-weight:600; }

  /* ===== Result note ===== */
  .result-note{
    width:100%; max-width:420px; margin-top:16px;
    background:var(--paper-2);
    border:1px solid var(--border);
    border-radius:14px;
    padding:16px 18px;
    display:none;
  }
  .result-note.show{ display:block; animation:fadein .35s ease; }
  @keyframes fadein{ from{opacity:0; transform:translateY(-4px);} to{opacity:1; transform:translateY(0);} }
  .result-note .rn-label{ font-size:11.5px; color:var(--ink-dim); letter-spacing:.4px; margin-bottom:4px; }
  .result-note .rn-desc{ font-size:14px; color:rgba(255,255,255,.85); line-height:1.6; }

  /* ===== Control panel below ===== */
  .panel-below{
    width:100%; max-width:420px; margin-top:26px;
    background:var(--paper);
    border:1px solid var(--border);
    border-radius:16px;
    padding:18px;
  }
  .panel-below h2{
    font-family:'Noto Serif Thai',serif;
    font-size:15px; font-weight:600; margin:0 0 4px; color:var(--ink);
  }
  .panel-below p.hint{ margin:0 0 12px; font-size:12.5px; color:rgba(255,255,255,.45); }

  .upload-row{ display:flex; gap:10px; align-items:center; margin-bottom:16px; flex-wrap:wrap; }
  .upload-btn{
    background:transparent;
    border:1px solid rgba(255,255,255,.25);
    color:var(--ink);
    font-family:'Sarabun',sans-serif;
    font-weight:500;
    font-size:13.5px;
    padding:8px 16px;
    border-radius:9px;
    cursor:pointer;
    display:inline-flex; align-items:center; gap:6px;
  }
  .upload-btn:hover{ background:rgba(255,255,255,.06); }
  .file-status{ font-size:12px; color:rgba(255,255,255,.45); }
  input[type=file]{ display:none; }

  .divider{ height:1px; background:var(--border); margin:14px 0; }

  .form-row{ display:flex; gap:10px; margin-bottom:10px; flex-wrap:wrap; }
  .form-row input{
    flex:1; min-width:130px;
    padding:9px 11px;
    border-radius:8px;
    border:1px solid rgba(255,255,255,.18);
    font-family:'Sarabun',sans-serif;
    font-size:13.5px;
    background:rgba(255,255,255,.04);
    color:var(--ink);
  }
  .form-row input::placeholder{ color:rgba(255,255,255,.35); }
  .form-row input:focus{ outline:1px solid var(--accent); outline-offset:1px; }
  .add-btn{
    background:var(--accent);
    color:#fff;
    border:none;
    border-radius:8px;
    padding:9px 18px;
    font-weight:600;
    font-size:13.5px;
    cursor:pointer;
    font-family:'Sarabun',sans-serif;
  }
  .add-btn:hover{ background:#d1541f; }
  .form-error{ color:#ff9a80; font-size:12px; margin:-4px 0 10px; display:none; }

  .task-list{
    max-height:150px; overflow-y:auto;
    border:1px solid var(--border); border-radius:10px;
    margin-top:6px;
  }
  .task-list-empty{ padding:14px; font-size:12.5px; color:rgba(255,255,255,.4); text-align:center; }
  .task-item{
    display:flex; justify-content:space-between; align-items:center; gap:8px;
    padding:8px 12px; font-size:13px;
    border-bottom:1px solid var(--border);
  }
  .task-item:last-child{ border-bottom:none; }
  .task-item .ti-name{ font-weight:600; color:var(--ink); }
  .task-item .ti-desc{ color:rgba(255,255,255,.45); font-size:12px; }
  .task-item button{
    background:none; border:none; color:#ff9a80; cursor:pointer; font-size:16px;
    line-height:1; padding:2px 6px;
  }

  @media (max-width:420px){
    .reel-window{ height:238px; }
    .reel-item{ height:48px; }
    .reel-item span{ font-size:16px; }
    .reel-item.hit span{ font-size:20px; }
    .lever-arm{ width:80px; }
  }