:root {
    --bg: #f4ecd8;
    --paper: #fdf8ea;
    --panel: #ffffff;
    --ink: #1a1410;
    --ink-soft: #514838;
    --line: #1a1410;
    --line-soft: #d6cdb3;
    --hot: #c1272d;
    --hot-deep: #8f1c20;
    --cold: #1f3a8a;
    --accent-warm: #d4a72c;
    --shadow-hard: 3px 3px 0 var(--line);
    --shadow-soft: 2px 2px 0 var(--line);
    --serif: Georgia, "Times New Roman", "Cochin", serif;
    --sans: Verdana, Geneva, Tahoma, sans-serif;
    --mono: "Courier New", "Cascadia Code", monospace;
  }

  * { box-sizing: border-box; margin: 0; padding: 0; }

  html, body {
    background: var(--bg);
    color: var(--ink);
    font-family: var(--sans);
    font-size: 13px;
    line-height: 1.45;
    min-height: 100vh;
  }

  /* Subtle paper texture */
  body::before {
    content: "";
    position: fixed; inset: 0;
    pointer-events: none;
    background-image:
      radial-gradient(circle at 20% 30%, rgba(180,140,80,.04) 0, transparent 50%),
      radial-gradient(circle at 80% 70%, rgba(120,90,40,.05) 0, transparent 50%);
    z-index: 0;
  }

  .container {
    position: relative;
    z-index: 1;
    max-width: 1280px;
    margin: 0 auto;
    padding: 24px 20px 60px;
  }

  /* Header */
  header {
    border: 2px solid var(--line);
    background: var(--paper);
    padding: 22px 26px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-hard);
    position: relative;
  }

  header::before {
    content: "";
    position: absolute;
    inset: 4px;
    border: 1px dashed var(--line);
    pointer-events: none;
  }

  header .row {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
  }

  header h1 {
    font-family: var(--serif);
    font-style: italic;
    font-weight: 700;
    font-size: clamp(28px, 4vw, 44px);
    letter-spacing: -0.5px;
    line-height: 1;
  }

  header h1 .pixel {
    font-style: normal;
    color: var(--hot);
  }

  header .tagline {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--ink-soft);
    text-transform: uppercase;
    letter-spacing: 1.5px;
  }

  header p.lede {
    margin-top: 12px;
    max-width: 70ch;
    font-size: 14px;
    color: var(--ink-soft);
  }

  /* Layout */
  .layout {
    display: grid;
    grid-template-columns: minmax(0, 380px) minmax(0, 1fr);
    gap: 24px;
    align-items: flex-start;
  }

  @media (max-width: 900px) {
    .layout { grid-template-columns: 1fr; }
  }

  /* Keep the preview pinned in view while scrolling the long controls list */
  @media (min-width: 901px) {
    .preview-col {
      position: sticky;
      top: 24px;
    }
  }

  /* Panels */
  .panel {
    border: 2px solid var(--line);
    background: var(--panel);
    box-shadow: var(--shadow-hard);
  }

  .panel-head {
    background: var(--ink);
    color: var(--paper);
    padding: 7px 12px;
    font-family: var(--mono);
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: 2px;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .panel-head .blink {
    width: 8px; height: 8px;
    background: var(--hot);
    border-radius: 50%;
    animation: blink 1.2s infinite;
  }

  @keyframes blink {
    0%, 49% { opacity: 1; }
    50%, 100% { opacity: 0; }
  }

  .panel-body {
    padding: 16px 18px;
  }

  /* Controls */
  .controls .panel-body { padding: 0; }

  .group {
    border-bottom: 1px solid var(--line-soft);
  }
  .group:last-child { border-bottom: none; }

  .group > summary {
    cursor: pointer;
    padding: 11px 18px;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    font-weight: 700;
    user-select: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #fbf6e8;
  }
  .group > summary:hover { background: #f5edd2; }
  .group > summary::-webkit-details-marker { display: none; }
  .group > summary::after {
    content: "[+]";
    font-family: var(--mono);
    color: var(--ink-soft);
  }
  .group[open] > summary::after { content: "[−]"; }

  .group-body {
    padding: 14px 18px 18px;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  /* Form controls */
  .field {
    display: grid;
    grid-template-columns: 90px 1fr;
    align-items: center;
    gap: 10px;
  }

  .field-stack {
    display: flex;
    flex-direction: column;
    gap: 5px;
  }

  .field-row {
    display: flex;
    gap: 8px;
    align-items: center;
  }

  label {
    font-size: 11px;
    font-family: var(--mono);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--ink-soft);
    font-weight: 700;
  }

  input[type="text"], input[type="number"], select {
    border: 1.5px solid var(--line);
    background: var(--paper);
    padding: 5px 8px;
    font-family: var(--mono);
    font-size: 12px;
    color: var(--ink);
    width: 100%;
    outline: none;
    transition: background .1s;
  }
  input[type="text"]:focus, input[type="number"]:focus, select:focus {
    background: #fff;
    box-shadow: 2px 2px 0 var(--line);
    transform: translate(-1px, -1px);
  }

  input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    background: var(--line-soft);
    border: 1px solid var(--line);
    outline: none;
    cursor: pointer;
  }
  input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px; height: 16px;
    background: var(--hot);
    border: 1.5px solid var(--line);
    cursor: pointer;
  }
  input[type="range"]::-moz-range-thumb {
    width: 16px; height: 16px;
    background: var(--hot);
    border: 1.5px solid var(--line);
    cursor: pointer;
  }

  input[type="color"] {
    -webkit-appearance: none;
    appearance: none;
    width: 32px; height: 24px;
    border: 1.5px solid var(--line);
    background: var(--paper);
    cursor: pointer;
    padding: 0;
  }
  input[type="color"]::-webkit-color-swatch-wrapper { padding: 1px; }
  input[type="color"]::-webkit-color-swatch { border: none; }

  input[type="checkbox"] {
    -webkit-appearance: none;
    appearance: none;
    width: 16px; height: 16px;
    border: 1.5px solid var(--line);
    background: var(--paper);
    cursor: pointer;
    position: relative;
    flex-shrink: 0;
  }
  input[type="checkbox"]:checked {
    background: var(--hot);
  }
  input[type="checkbox"]:checked::after {
    content: "✓";
    position: absolute;
    top: -3px; left: 1px;
    color: white;
    font-weight: 900;
    font-size: 14px;
  }

  .check-row {
    display: flex;
    gap: 6px;
    align-items: center;
    cursor: pointer;
    user-select: none;
  }
  .check-row label {
    cursor: pointer;
    text-transform: none;
    font-family: var(--sans);
    font-size: 12px;
    letter-spacing: 0;
  }

  .range-value {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--ink-soft);
    min-width: 32px;
    text-align: right;
  }

  /* Templates grid */
  .template-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .template-btn {
    border: 1.5px solid var(--line);
    background: var(--paper);
    padding: 10px 8px;
    font-family: var(--sans);
    font-size: 11px;
    font-weight: 700;
    cursor: pointer;
    text-align: center;
    transition: all .08s;
    color: var(--ink);
  }
  .template-btn:hover {
    background: #fbe9d2;
    transform: translate(-1px, -1px);
    box-shadow: 2px 2px 0 var(--line);
  }
  .template-btn:active {
    transform: translate(0, 0);
    box-shadow: none;
  }
  .template-btn .preview-mini {
    display: block;
    width: 88px; height: 31px;
    margin: 0 auto 6px;
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
    border: 1px solid var(--line);
  }

  /* Icon picker */
  .icon-search { width: 100%; }
  .icon-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 3px;
    max-height: 200px;
    overflow-y: auto;
    padding: 6px;
    margin: 6px 0;
    border: 1.5px solid var(--line);
    background: var(--paper);
  }
  .icon-cell {
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1 / 1;
    padding: 3px;
    border: 1px solid var(--line-soft);
    background: var(--panel);
    color: var(--ink);
    cursor: pointer;
  }
  .icon-cell:hover {
    background: #fbe9d2;
    border-color: var(--line);
  }
  .icon-cell.sel {
    background: var(--hot);
    border-color: var(--line);
    color: #fff;
  }
  .icon-cell.hidden { display: none; }
  .icon-cell svg {
    width: 100%; height: 100%;
    display: block;
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
  }
  .icon-selected {
    font-size: 11px;
    color: var(--ink-soft);
    margin-bottom: 6px;
    min-height: 14px;
    word-break: break-all;
  }

  /* Preview area */
  .preview-stage {
    background:
      repeating-conic-gradient(#e8e0c8 0 25%, #f0e8d0 0 50%) 50% / 16px 16px;
    border: 1.5px solid var(--line);
    padding: 28px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 28px;
  }

  .scale-row {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
  }

  .scale-label {
    font-family: var(--mono);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--ink-soft);
    background: var(--paper);
    padding: 3px 8px;
    border: 1px solid var(--line);
  }

  .preview-canvas, .preview-img {
    image-rendering: pixelated;
    image-rendering: crisp-edges;
    image-rendering: -moz-crisp-edges;
    display: block;
    background: white;
  }

  .scale-1x { width: 88px; height: 31px; }
  .scale-2x { width: 176px; height: 62px; }
  .scale-4x { width: 352px; height: 124px; }
  .scale-6x { width: 528px; height: auto; aspect-ratio: 88 / 31; max-width: 100%; }

  /* Actions */
  .actions {
    padding: 16px 18px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    border-top: 1.5px solid var(--line);
    background: #fbf6e8;
  }

  .btn {
    border: 1.5px solid var(--line);
    background: var(--paper);
    padding: 8px 14px;
    font-family: var(--mono);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    color: var(--ink);
    transition: all .08s;
  }
  .btn:hover {
    background: var(--paper);
    transform: translate(-1px, -1px);
    box-shadow: 2px 2px 0 var(--line);
  }
  .btn:active { transform: translate(0,0); box-shadow: none; }
  .btn.primary {
    background: var(--hot);
    color: white;
  }
  .btn.primary:hover { background: var(--hot-deep); }

  .btn-link {
    background: transparent;
    border: none;
    color: var(--hot);
    text-decoration: underline;
    font-family: var(--mono);
    font-size: 11px;
    cursor: pointer;
  }

  /* Info */
  .info-strip {
    margin-top: 24px;
    border: 2px solid var(--line);
    background: var(--paper);
    padding: 18px 22px;
    box-shadow: var(--shadow-hard);
    font-size: 12px;
    color: var(--ink-soft);
    line-height: 1.6;
  }
  .info-strip h3 {
    font-family: var(--serif);
    font-style: italic;
    font-weight: 700;
    font-size: 18px;
    color: var(--ink);
    margin-bottom: 8px;
  }
  .info-strip code {
    font-family: var(--mono);
    background: #f4ecd8;
    padding: 1px 5px;
    border: 1px solid var(--line-soft);
    font-size: 11px;
  }
  .info-strip a {
    color: var(--hot);
    text-decoration: underline;
  }

  /* Frame editor */
  .frame-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }
  .frame-item {
    border: 1.5px solid var(--line);
    background: var(--paper);
    padding: 8px;
    display: flex;
    flex-direction: column;
    gap: 6px;
  }
  .frame-item .frame-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  .frame-tag {
    font-family: var(--mono);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
    background: var(--ink);
    color: var(--paper);
    padding: 2px 8px;
  }
  .frame-mini {
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
    width: 88px; height: 31px;
    border: 1px solid var(--line);
    background: white;
  }

  /* Toast */
  .toast {
    position: fixed;
    bottom: 24px; left: 50%;
    transform: translateX(-50%);
    background: var(--ink);
    color: var(--paper);
    padding: 10px 18px;
    font-family: var(--mono);
    font-size: 12px;
    border: 1.5px solid var(--line);
    box-shadow: var(--shadow-hard);
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s;
    z-index: 100;
  }
  .toast.show { opacity: 1; }

  /* Footer + license modal */
  .site-footer {
    margin-top: 18px;
    padding-top: 12px;
    border-top: 1.5px solid var(--line-soft);
    font-size: 11px;
    color: var(--ink-soft);
    text-align: center;
  }
  .site-footer a { color: var(--cold); }
  .link-btn {
    background: none;
    border: none;
    padding: 0;
    font: inherit;
    color: var(--cold);
    text-decoration: underline;
    cursor: pointer;
  }
  .link-btn:hover { color: var(--hot); }

  .modal[hidden] { display: none; }
  .modal {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
  }
  .modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(26, 20, 16, 0.6);
  }
  .modal-box {
    position: relative;
    background: var(--panel);
    border: 1.5px solid var(--line);
    box-shadow: var(--shadow-hard);
    max-width: 560px;
    width: 100%;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
  }
  .modal-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    border-bottom: 1.5px solid var(--line);
  }
  .modal-head h3 { font-size: 14px; }
  .modal-close {
    background: none;
    border: none;
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
    color: var(--ink);
  }
  .modal-close:hover { color: var(--hot); }
  .modal-body {
    padding: 14px;
    overflow-y: auto;
  }
  .modal-body p { margin-bottom: 10px; font-size: 12px; }
  .modal-body a { color: var(--cold); }
  .modal-body pre {
    font-family: var(--mono);
    font-size: 11px;
    line-height: 1.5;
    white-space: pre-wrap;
    word-break: break-word;
    background: var(--paper);
    border: 1px solid var(--line-soft);
    padding: 10px;
  }

  .hint {
    font-size: 10.5px;
    color: var(--ink-soft);
    font-family: var(--mono);
    line-height: 1.4;
  }

  details[open] summary { background: #f5edd2; }

  .preset-buttons-display {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    padding: 18px;
    background: #fbf6e8;
    border-top: 1.5px solid var(--line);
  }
  .preset-buttons-display canvas {
    cursor: pointer;
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
    width: 88px; height: 31px;
    border: 1px solid var(--line);
    transition: transform .1s;
  }
  .preset-buttons-display canvas:hover {
    transform: scale(1.1);
  }

  /* ====== TIMELINE & FRAME EDITOR ====== */
  .timeline {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    padding: 8px;
    background: #fbf6e8;
    border: 1.5px solid var(--line);
    align-items: flex-start;
  }
  .frame-thumb {
    border: 1.5px solid var(--line-soft);
    background: white;
    padding: 3px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    transition: all .08s;
    position: relative;
  }
  .frame-thumb:hover { border-color: var(--ink-soft); }
  .frame-thumb.active {
    border: 2px solid var(--hot);
    padding: 2px;
    background: #fff4ea;
  }
  .frame-thumb canvas {
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
    width: 66px;
    height: 23px;
    background: white;
    border: 1px solid var(--line-soft);
  }
  .frame-thumb .frame-tag-mini {
    font-family: var(--mono);
    font-size: 9px;
    color: var(--ink-soft);
    letter-spacing: 0.5px;
  }
  .frame-thumb.base .frame-tag-mini {
    color: var(--hot);
    font-weight: 700;
  }
  .frame-thumb .frame-delay {
    font-family: var(--mono);
    font-size: 8px;
    color: var(--ink-soft);
  }
  .frame-thumb-add {
    border: 1.5px dashed var(--ink-soft);
    background: transparent;
    cursor: pointer;
    width: 74px;
    height: 47px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--mono);
    font-size: 14px;
    color: var(--ink-soft);
    transition: all .08s;
  }
  .frame-thumb-add:hover {
    border-color: var(--hot);
    color: var(--hot);
    background: #fff4ea;
  }
  .frame-editor {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 10px;
    background: #fff8e8;
    border: 1.5px solid var(--line-soft);
  }
  .frame-editor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--mono);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--ink-soft);
    padding-bottom: 6px;
    border-bottom: 1px dashed var(--line-soft);
  }
  .frame-editor-header strong {
    color: var(--ink);
    font-weight: 700;
  }
  .override-row {
    display: grid;
    grid-template-columns: 18px 70px 1fr;
    align-items: center;
    gap: 8px;
    opacity: 0.55;
    transition: opacity .15s;
  }
  .override-row.on { opacity: 1; }
  .override-row.disabled { opacity: 0.3; pointer-events: none; }
  .override-row label {
    text-transform: none;
    font-family: var(--sans);
    font-size: 11px;
    letter-spacing: 0;
    color: var(--ink);
    font-weight: 400;
  }
  .frame-actions {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
  }
  .btn-small {
    border: 1.5px solid var(--line);
    background: var(--paper);
    padding: 5px 10px;
    font-family: var(--mono);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all .08s;
  }
  .btn-small:hover { transform: translate(-1px,-1px); box-shadow: 1px 1px 0 var(--line); }
  .btn-small.danger { color: var(--hot); }
  .btn-small.danger:hover { background: var(--hot); color: white; }

  /* ====== OVERLAY CONTROLS ====== */
  .file-drop {
    border: 1.5px dashed var(--ink-soft);
    padding: 14px;
    text-align: center;
    background: var(--paper);
    cursor: pointer;
    transition: all .1s;
    font-family: var(--mono);
    font-size: 11px;
    color: var(--ink-soft);
  }
  .file-drop:hover, .file-drop.drag {
    border-color: var(--hot);
    color: var(--hot);
    background: #fff4ea;
  }
  .file-drop input { display: none; }
  .overlay-info {
    font-family: var(--mono);
    font-size: 10px;
    color: var(--ink-soft);
    padding: 6px 8px;
    background: #fbf6e8;
    border: 1px solid var(--line-soft);
    word-break: break-all;
  }
  .overlay-info.has-file { color: var(--ink); }
  .overlay-info strong { color: var(--hot); }
  .quick-positions {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 4px;
  }
  .quick-positions .btn-small {
    padding: 5px 4px;
    font-size: 9px;
  }

  /* ====== LAYER ORDER LIST ====== */
  .layer-list {
    display: flex;
    flex-direction: column;
    gap: 5px;
  }
  .layer-row {
    display: flex;
    align-items: center;
    gap: 6px;
    border: 1px solid var(--line-soft);
    background: var(--paper);
    padding: 6px 8px;
  }
  .layer-name {
    flex: 1;
    font-family: var(--mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
  }
  .layer-row .btn-small {
    padding: 3px 8px;
    font-size: 12px;
    line-height: 1;
  }
  .layer-row .btn-small:disabled {
    opacity: 0.3;
    cursor: default;
  }

  /* ====== PLAYBACK INDICATOR ====== */
  .playback-pill {
    font-family: var(--mono);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--paper);
    background: var(--hot);
    padding: 2px 8px;
    border: 1px solid var(--line);
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }
  .playback-pill .dot {
    width: 6px;
    height: 6px;
    background: var(--paper);
    border-radius: 50%;
    animation: blink 0.8s infinite;
  }

  /* Hide elements when collapsed */
  .conditional-hide { display: none; }
  .conditional-hide.show { display: flex; }