:root {
    --red:        #F95540;
    --red-dark:   #E04428;
    --red-bright: #FF5500;
    --pink-bg:    #FBEEEC;
    --pink-soft:  #FFE4DE;
    --green:      #1FAA59;
    --text:       #2F2A29;
    --text-muted: #7A6D6A;
    --bg:         #FFFFFF;
    --border:     #E8E0DE;
    --shadow:     0 2px 12px rgba(0,0,0,.04);
  }
  * { box-sizing: border-box; }
  html, body { margin: 0; padding: 0; }
  body {
    font-family: 'Mulish', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    -webkit-font-smoothing: antialiased;
    line-height: 1.4;
  }

  /* Background triangles */
  .bg-triangles { position: fixed; inset: 0; pointer-events: none; z-index: 0; overflow: hidden; }
  .tri { position: absolute; width: 56vw; height: 56vw; background: var(--red); opacity: 0.92; }
  .tri.tl { top: 0; left: -10vw; clip-path: polygon(0 0, 100% 0, 0 100%); }
  .tri.br { bottom: -10vw; right: -10vw; clip-path: polygon(100% 0, 100% 100%, 0 100%); }
  .tri::before {
    content: ''; position: absolute; inset: 0;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='80' height='80' viewBox='0 0 80 80'><g fill='none' stroke='rgba(255,255,255,0.18)' stroke-width='2'><path d='M25 30 h25 a5 5 0 0 1 5 5 v10 a5 5 0 0 1 -5 5 h-25 a5 5 0 0 1 -5 -5 v-10 a5 5 0 0 1 5 -5 z'/><line x1='32' y1='30' x2='32' y2='50'/><circle cx='40' cy='40' r='3'/></g></svg>");
    opacity: 0.7;
  }

  /* Hero */
  .hero { position: relative; z-index: 5; text-align: center; padding: 40px 20px 30px; max-width: 1100px; margin: 0 auto; }
  .hero h1 { font-size: 64px; font-weight: 700; margin: 0 0 20px; line-height: 1.1; letter-spacing: -1px; }
  .hero h1 .strong { font-weight: 900; }
  .pill { display: inline-block; padding: 14px 28px; border: 2px solid var(--red); border-radius: 8px; color: var(--red); font-weight: 800; font-size: 16px; background: white; margin-top: 8px; }

  /* Compression type + output format row */
  .ctype-row { position: relative; z-index: 5; max-width: 1100px; margin: 0 auto; display: flex; justify-content: flex-end; padding: 20px 40px 0; align-items: center; gap: 24px; flex-wrap: wrap; }
  .ctype-group { display: flex; align-items: center; gap: 10px; }
  .ctype-label { color: var(--text); font-weight: 800; font-size: 13px; letter-spacing: 1px; }
  .ctype-help { display: inline-flex; align-items: center; justify-content: center; width: 18px; height: 18px; border-radius: 50%; background: white; color: var(--text-muted); font-size: 11px; font-weight: 800; border: 1.5px solid var(--text-muted); cursor: help; }
  .ctype-tabs { display: flex; border-radius: 6px; overflow: hidden; background: white; box-shadow: var(--shadow); border: 1px solid var(--border); }
  .ctype-tabs button { background: white; border: 0; padding: 10px 22px; font-family: inherit; font-size: 13px; font-weight: 800; letter-spacing: 0.5px; color: var(--text); cursor: pointer; transition: background .15s, color .15s; }
  .ctype-tabs button + button { border-left: 1px solid var(--border); }
  .ctype-tabs button:hover { background: var(--pink-bg); }
  .ctype-tabs button.active { background: var(--red); color: white; }
  .ctype-select {
    font-family: inherit; font-size: 13px; font-weight: 800; letter-spacing: 0.5px;
    color: var(--text); background: white;
    border: 1px solid var(--border); border-radius: 6px;
    padding: 10px 32px 10px 16px; cursor: pointer;
    box-shadow: var(--shadow); transition: border-color .15s, color .15s;
    appearance: none; -webkit-appearance: none; -moz-appearance: none;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'><path fill='%232F2A29' d='M0 0l5 6 5-6z'/></svg>");
    background-repeat: no-repeat;
    background-position: right 12px center;
  }
  .ctype-select:hover { border-color: var(--red); color: var(--red); }
  .ctype-select:focus { outline: none; border-color: var(--red); }
  .ctype-select.active-convert { border-color: var(--red); color: var(--red); }

  /* Drop zone */
  .drop-wrap { position: relative; z-index: 5; max-width: 1100px; margin: 16px auto 0; padding: 0 40px; }
  .drop {
    display: block;
    background: white;
    border: 2.5px dashed var(--red);
    border-radius: 12px;
    padding: 60px 40px;
    text-align: center;
    cursor: pointer;
    transition: background .15s, border-color .15s;
  }
  .drop:hover, .drop.over { background: var(--pink-bg); border-color: var(--red-dark); }
  .drop .icon-stack { width: 80px; height: 80px; display: block; margin: 0 auto 14px; }
  .drop input[type=file] { display: none; }
  .drop .drop-msg { color: var(--red); font-weight: 800; font-size: 18px; margin-bottom: 8px; }
  .drop .drop-sub { color: var(--text-muted); font-size: 14px; margin-bottom: 18px; }
  .btn-select { display: inline-flex; align-items: center; gap: 8px; background: white; border: 1px solid var(--border); border-radius: 6px; padding: 10px 20px; font-family: inherit; font-size: 14px; font-weight: 700; color: var(--text); cursor: pointer; box-shadow: var(--shadow); }
  .btn-select:hover { border-color: var(--red); color: var(--red); }
  .btn-select svg { width: 16px; height: 16px; }

  /* Custom-mode controls panel */
  .controls { position: relative; z-index: 5; display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; max-width: 1100px; margin: 16px auto 0; padding: 0 40px; }
  .controls[hidden] { display: none; }
  .ctl { background: white; border: 1px solid var(--border); border-radius: 8px; padding: 12px 16px; box-shadow: var(--shadow); }
  .ctl label { display:block; font-size:12px; color: var(--text-muted); margin-bottom: 6px; font-weight: 700; letter-spacing: 0.5px; text-transform: uppercase; }
  .ctl label .val { float:right; color: var(--text); font-weight: 800; font-variant-numeric: tabular-nums; }
  .ctl input[type=range] { width: 100%; accent-color: var(--red); }
  .ctl[hidden] { display: none; }

  /* ===== File list (multi-file results table) ===== */
  .filelist-wrap { position: relative; z-index: 5; max-width: 1100px; margin: 24px auto 0; padding: 0 40px; }
  .filelist-wrap[hidden] { display: none; }
  .filelist-card { background: white; border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow); overflow: hidden; }
  .filelist-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 16px 24px; border-bottom: 1px solid var(--border);
    background: var(--pink-bg);
    flex-wrap: wrap; gap: 10px;
  }
  .filelist-header .summary { color: var(--text); font-weight: 800; font-size: 15px; }
  .filelist-header .summary .saved-total { color: var(--green); }
  .filelist-actions { display: flex; gap: 10px; }
  .filelist-actions button {
    background: var(--red); color: white; border: 0;
    padding: 9px 18px; border-radius: 6px;
    font-family: inherit; font-size: 13px; font-weight: 800; letter-spacing: 0.3px;
    cursor: pointer; transition: background .15s;
  }
  .filelist-actions button:hover { background: var(--red-dark); }
  .filelist-actions button.ghost {
    background: white; color: var(--text); border: 1px solid var(--border);
  }
  .filelist-actions button.ghost:hover { border-color: var(--red); color: var(--red); }
  .filelist-actions button[disabled] {
    background: #DAD5D3; color: white; cursor: not-allowed;
  }

  table.filelist {
    width: 100%; border-collapse: collapse; font-size: 14px;
  }
  table.filelist th {
    text-align: left; padding: 12px 16px;
    font-size: 11px; font-weight: 800; letter-spacing: 1px; color: var(--text-muted);
    text-transform: uppercase;
    background: white; border-bottom: 1px solid var(--border);
  }
  table.filelist td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
  }
  table.filelist tr:last-child td { border-bottom: none; }
  table.filelist tr.row-error td { background: #FFF4F2; }
  td.col-name { font-weight: 700; max-width: 320px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  td.col-name .badge { display: inline-block; background: var(--pink-soft); color: var(--red); padding: 2px 8px; border-radius: 4px; font-size: 10px; font-weight: 800; letter-spacing: 0.5px; text-transform: uppercase; margin-left: 8px; vertical-align: 2px; }
  td.col-before, td.col-after { color: var(--text-muted); font-variant-numeric: tabular-nums; white-space: nowrap; }
  td.col-after .size { color: var(--text); font-weight: 800; }
  td.col-after .saved, td.col-after .grown {
    display: inline-block; color: white;
    padding: 2px 7px; border-radius: 4px;
    font-weight: 800; font-size: 11px; margin-left: 6px;
    font-variant-numeric: tabular-nums;
  }
  td.col-after .saved { background: var(--green); }
  td.col-after .grown { background: #C28C00; }
  td.col-status { min-width: 180px; }
  td.col-action { white-space: nowrap; text-align: right; }
  /* progress bar inside status cell */
  .row-progress {
    display: flex; align-items: center; gap: 10px;
  }
  .row-progress .bar {
    flex: 1; height: 4px; background: var(--pink-bg); border-radius: 2px; overflow: hidden;
  }
  .row-progress .bar > div {
    height: 100%; background: var(--red);
    width: 0%; transition: width .2s ease;
  }
  .row-progress .label {
    font-size: 12px; color: var(--text-muted);
    font-variant-numeric: tabular-nums; min-width: 60px; text-align: right;
  }
  .row-status-done { color: var(--green); font-weight: 800; font-size: 12px; letter-spacing: 0.5px; text-transform: uppercase; }
  .row-status-error { color: var(--red); font-weight: 800; font-size: 12px; }
  .row-status-grown { color: #C28C00; font-weight: 800; font-size: 12px; letter-spacing: 0.5px; text-transform: uppercase; }
  .row-status-queued { color: var(--text-muted); font-weight: 700; font-size: 12px; letter-spacing: 0.5px; }

  /* Row action buttons */
  .btn-row {
    background: white; color: var(--text);
    border: 1px solid var(--border); border-radius: 5px;
    padding: 6px 12px; font-family: inherit; font-size: 12px; font-weight: 700;
    cursor: pointer; transition: all .15s;
    display: inline-flex; align-items: center; gap: 5px;
  }
  .btn-row:hover { border-color: var(--red); color: var(--red); }
  .btn-row.primary { background: var(--red); color: white; border-color: var(--red); }
  .btn-row.primary:hover { background: var(--red-dark); border-color: var(--red-dark); color: white; }
  .btn-row[disabled] { background: #F4F0EE; color: #B5ADAB; border-color: #ECE6E4; cursor: not-allowed; }
  .btn-row svg { width: 14px; height: 14px; }
  .row-actions { display: inline-flex; gap: 6px; }

  /* Compare modal */
  .modal-overlay {
    position: fixed; inset: 0; z-index: 1000;
    background: rgba(47,42,41,0.7);
    display: none;
    align-items: center; justify-content: center;
    padding: 24px;
  }
  .modal-overlay.open { display: flex; }
  .modal {
    background: white; border-radius: 12px; overflow: hidden;
    max-width: 1100px; width: 100%; max-height: 90vh;
    display: flex; flex-direction: column;
    box-shadow: 0 20px 60px rgba(0,0,0,.4);
  }
  .modal-head {
    display: flex; align-items: center; justify-content: space-between;
    padding: 16px 24px; border-bottom: 1px solid var(--border);
  }
  .modal-head h2 { margin: 0; font-size: 18px; font-weight: 800; }
  .modal-head .close {
    background: none; border: 0; font-size: 24px;
    cursor: pointer; color: var(--text-muted); padding: 4px 8px;
  }
  .modal-head .close:hover { color: var(--red); }
  .modal-body {
    flex: 1; overflow: auto; background: var(--pink-bg);
    display: flex; align-items: center; justify-content: center;
    padding: 24px; min-height: 320px;
  }
  /* Image compare slider — sizes itself to the image's natural aspect
     ratio, constrained by available modal-body space. */
  .compare {
    position: relative;
    /* Shrink to image size; never exceed available viewport area. */
    max-width: min(1000px, 100%);
    max-height: 100%;
    overflow: hidden;
    user-select: none;
    -webkit-user-select: none;
    touch-action: none;
    border-radius: 8px;
    /* Checkerboard so transparent PNGs / SVGs don't look like solid
       black blobs. 16px tiles, light-on-light to stay out of the way. */
    background-color: #fff;
    background-image:
      linear-gradient(45deg, #e5e5e5 25%, transparent 25%),
      linear-gradient(-45deg, #e5e5e5 25%, transparent 25%),
      linear-gradient(45deg, transparent 75%, #e5e5e5 75%),
      linear-gradient(-45deg, transparent 75%, #e5e5e5 75%);
    background-size: 16px 16px;
    background-position: 0 0, 0 8px, 8px -8px, -8px 0;
    /* Flex so the bg image dictates the container size. */
    display: inline-flex;
  }
  .compare .bg-img {
    display: block;
    max-width: 100%;
    /* Cap height so portraits don't blow up the modal. */
    max-height: calc(90vh - 120px);
    width: auto;
    height: auto;
    pointer-events: none;
    /* The compressed image only paints the RIGHT half. Clipping both
       layers complementarily (instead of stacking a full image under a
       clipped one) means transparent/semi-transparent pixels never show
       both versions blended on top of each other. */
    clip-path: inset(0 0 0 50%);
  }
  /* SVG compare: container has an explicit pixel size set via JS, so
     both image layers fill it instead of trying to use their own
     (often missing) intrinsic size. */
  .compare.compare-svg {
    display: block;
    max-width: 100%;
    max-height: calc(90vh - 120px);
  }
  .compare.compare-svg .bg-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
  }
  .compare .top-img {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    object-fit: fill;
    clip-path: inset(0 50% 0 0);
    transition: none;
    pointer-events: none;
  }
  .compare .slider {
    position: absolute; top: 0; bottom: 0; left: 50%;
    width: 4px; background: white; transform: translateX(-50%);
    cursor: ew-resize;
    box-shadow: 0 0 8px rgba(0,0,0,.3);
  }
  .compare .slider::before {
    content: ''; position: absolute;
    top: 50%; left: 50%; transform: translate(-50%, -50%);
    width: 32px; height: 32px; background: white;
    border-radius: 50%; box-shadow: 0 0 8px rgba(0,0,0,.3);
  }
  .compare .slider::after {
    content: '⇄'; position: absolute;
    top: 50%; left: 50%; transform: translate(-50%, -50%);
    color: var(--text); font-weight: 700;
    z-index: 1;
  }
  .compare-labels {
    position: absolute; top: 12px; left: 12px; right: 12px;
    display: flex; justify-content: space-between;
    pointer-events: none;
  }
  .compare-labels span {
    background: rgba(47,42,41,0.8); color: white;
    padding: 4px 10px; border-radius: 4px;
    font-size: 11px; font-weight: 800; letter-spacing: 1px;
  }

  /* Footer */
  footer { position: relative; z-index: 5; text-align: center; padding: 40px 20px 24px; color: var(--text-muted); font-size: 13px; line-height: 2; }
  .footer-credit {
    display: inline-flex; align-items: center; gap: 8px;
    vertical-align: middle;
  }
  .gh-link {
    display: inline-flex; align-items: center; gap: 5px;
    color: var(--text-muted); text-decoration: none; font-weight: 700;
    transition: color .15s;
  }
  .gh-link:hover { color: var(--text); }
  .gh-link svg { display: block; }
  .footer-license {
    display: inline-flex; align-items: center;
    padding: 2px 8px; border-radius: 4px;
    background: var(--border); color: var(--text-muted);
    font-size: 11px; font-weight: 800; letter-spacing: 0.5px;
    line-height: 1;
  }

  /* ===== Responsive ===== */

  /* Tablet */
  @media (max-width: 900px) {
    .hero { padding: 32px 16px 24px; }
    .hero h1 { font-size: 48px; }
    .pill { font-size: 14px; padding: 12px 22px; }
    .ctype-row, .drop-wrap, .filelist-wrap, .controls { padding-left: 16px; padding-right: 16px; }
    .ctype-row { justify-content: center; flex-wrap: wrap; }
    .drop { padding: 48px 24px; }
    .controls { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
    table.filelist th:nth-child(2), table.filelist td:nth-child(2) { display: none; }
    td.col-name { max-width: 200px; }
  }

  /* Phone — convert table to stacked cards */
  @media (max-width: 640px) {
    .hero { padding: 24px 14px 16px; }
    .hero h1 { font-size: 32px; letter-spacing: -0.5px; margin-bottom: 14px; }
    .pill { font-size: 12px; padding: 10px 16px; letter-spacing: 0.3px; }

    .ctype-row { padding: 14px 14px 0; gap: 12px; font-size: 11px; flex-direction: column; align-items: stretch; }
    .ctype-group { flex-wrap: wrap; gap: 6px; justify-content: flex-start; }
    .ctype-label { font-size: 11px; letter-spacing: 0.5px; }
    .ctype-tabs { flex: 1; min-width: 0; }
    .ctype-tabs button { flex: 1; padding: 10px 8px; font-size: 11px; letter-spacing: 0.3px; }
    .ctype-select { flex: 1; min-width: 0; font-size: 11px; padding: 9px 28px 9px 12px; }

    .drop-wrap, .filelist-wrap, .controls { padding-left: 14px; padding-right: 14px; }
    .drop { padding: 32px 16px; border-width: 2px; }
    .drop .icon-stack { width: 60px; height: 60px; margin-bottom: 10px; }
    .drop .drop-msg { font-size: 15px; }
    .drop .drop-sub { font-size: 12px; margin-bottom: 14px; }
    .btn-select { padding: 9px 16px; font-size: 13px; }

    .controls { grid-template-columns: 1fr 1fr; gap: 8px; }
    .ctl { padding: 10px 12px; }
    .ctl label { font-size: 11px; }

    /* Header inside results card */
    .filelist-header { padding: 12px 14px; }
    .filelist-header .summary { font-size: 13px; width: 100%; }
    .filelist-actions { width: 100%; }
    .filelist-actions button {
      flex: 1; padding: 9px 10px; font-size: 12px; letter-spacing: 0;
    }

    /* Convert table → cards */
    table.filelist, table.filelist tbody, table.filelist tr, table.filelist td {
      display: block; width: 100%;
    }
    table.filelist thead { display: none; }
    table.filelist tr {
      padding: 12px 14px;
      border-bottom: 1px solid var(--border);
    }
    table.filelist tr:last-child { border-bottom: none; }
    table.filelist td {
      padding: 4px 0; border: none;
    }
    td.col-name {
      max-width: 100%; font-size: 14px;
      display: flex !important; align-items: center; gap: 8px;
      margin-bottom: 6px;
    }
    td.col-name .badge { margin-left: 0; flex-shrink: 0; }
    /* Show "Before" again on mobile but inline with After */
    table.filelist td.col-before { display: block !important; }
    td.col-before, td.col-after {
      display: inline-block !important; font-size: 13px;
      white-space: normal;
    }
    td.col-before::before { content: 'Before: '; color: var(--text-muted); font-weight: 600; font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; }
    td.col-after::before { content: 'After: '; color: var(--text-muted); font-weight: 600; font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; }
    td.col-after { margin-left: 14px; }
    td.col-after .saved, td.col-after .grown { font-size: 10px; padding: 1px 5px; }

    td.col-status { min-width: 0; margin-top: 4px; }
    td.col-action { text-align: left; margin-top: 10px; }
    .row-actions { display: flex; width: 100%; gap: 8px; }
    .btn-row { flex: 1; justify-content: center; padding: 9px 8px; font-size: 13px; }

    /* Compare modal */
    .modal-overlay { padding: 0; align-items: stretch; }
    .modal {
      max-height: 100vh; max-height: 100dvh;
      border-radius: 0;
    }
    .modal-head { padding: 12px 16px; }
    .modal-head h2 { font-size: 15px; max-width: 80%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .modal-body { padding: 12px; min-height: 0; }
    .compare .bg-img { max-height: calc(100dvh - 80px); }
    .compare-labels span { font-size: 9px; padding: 3px 7px; letter-spacing: 0.5px; }
    .compare .slider::before { width: 40px; height: 40px; }
    .compare .slider::after { font-size: 18px; }

    /* Smaller background triangles so they don't dominate */
    .tri { width: 75vw; height: 75vw; opacity: 0.85; }

    footer { padding: 24px 14px 20px; font-size: 11px; line-height: 1.6; }
  }

  /* Very small phones */
  @media (max-width: 360px) {
    .hero h1 { font-size: 26px; }
    .ctype-tabs button { font-size: 10px; padding: 9px 4px; }
    .controls { grid-template-columns: 1fr; }
  }