:root{
  --bg:#fffef9; --paper:#ffffff; --ink:#18222f; --muted:#5a6475;
  --border:#e6e7ea; --shadow:0 8px 24px rgba(0,0,0,.06);
  --azure:#e6f2ff; --greige:#f6f7f9; --cyan:#e7fbff; --sepia:#fff1e0;
  --stem:#eef2ff; --ending:#d1fae5; --ok:#16a34a; --err:#dc2626;
  --accent:#2563eb; --radius:16px;
}

*{box-sizing:border-box} html,body{height:100%}
body{
  margin:0;
  background:
    radial-gradient(700px 400px at 0% 0%, #fffbd6 0%, transparent 60%),
    radial-gradient(700px 400px at 100% 0%, #e8fbff 0%, transparent 60%),
    radial-gradient(800px 500px at 100% 100%, #fff0da 0%, transparent 55%),
    var(--bg);
  color:var(--ink);
  font:16px/1.55 system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,"Apple Color Emoji","Segoe UI Emoji";
  padding:12px; display:block;
}

.wrap{
  max-width:720px; margin:0 auto;
  background:var(--paper); border:1px solid var(--border);
  border-radius:var(--radius); box-shadow:var(--shadow); overflow:hidden;
}

.topbar{
  position:sticky; top:0; z-index:10;
  display:flex; gap:8px; align-items:center; justify-content:space-between;
  padding:10px 12px; background:#fff; border-bottom:1px solid var(--border);
}
.title{font-weight:800; font-size:18px; line-height:1.2}
.subtitle{color:var(--muted); font-size:12px}
.file{display:flex; align-items:center; gap:8px}
.file input{display:none}
.btn.ghost{border:1px dashed var(--border); background:#fcfdff}

.toolbar{
  display:grid; grid-template-columns:repeat(4,1fr); gap:8px;
  padding:10px 12px; border-bottom:1px solid var(--border);
}
.btn{
  height:44px; border:1px solid var(--border); background:#fff;
  border-radius:10px; cursor:pointer; font-weight:700;
  box-shadow:0 3px 12px rgba(0,0,0,.05);
}
.btn:active{transform:translateY(1px)}
.status{grid-column:1/-1; text-align:right; color:var(--muted); font-weight:700; padding-top:2px}

.main{padding:12px}
.grid-head{display:flex; align-items:baseline; justify-content:space-between; margin-bottom:8px}
.grid-title{font-weight:800; font-size:18px}
.progress{color:var(--muted); font-weight:700; font-size:12px}

.table{overflow:auto; border:1px solid var(--border); border-radius:12px}
table{width:100%; border-collapse:separate; border-spacing:0; font-variant-numeric:tabular-nums}
thead th{
  background:linear-gradient(180deg,#f8fbff 0%,#f2f6ff 100%);
  text-align:left; padding:8px 10px; border-bottom:1px solid var(--border);
  font-size:12px; text-transform:uppercase; letter-spacing:.25px; position:sticky; top:0;
}
td,th{padding:8px 10px}

/* contain effects inside cells */
tbody td{position:relative; overflow:hidden}

/* Row tints */
tbody tr:nth-child(1) td{background:linear-gradient(90deg, var(--azure), transparent 65%)}
tbody tr:nth-child(2) td{background:linear-gradient(90deg, var(--greige), transparent 65%)}
tbody tr:nth-child(3) td{background:linear-gradient(90deg, var(--cyan), transparent 65%)}
tbody tr:nth-child(4) td{background:linear-gradient(90deg, var(--sepia), transparent 65%)}

/* Narrower first column for shorthands */
.case{font-weight:800; min-width:58px; width:1%; white-space:nowrap; font-size:14px}

.chip{
  display:inline-flex; align-items:center; justify-content:center;
  padding:2px 8px; border-radius:999px; box-shadow:inset 0 0 0 1px rgba(0,0,0,.05)
}
.stem{background:var(--stem); border-radius:6px}
.word{
  display:inline-block; padding:6px 10px; border-radius:10px;
  background:#f1f5f9; border:1px solid var(--border); box-shadow:0 3px 12px rgba(0,0,0,.04);
  animation:popIn .26s cubic-bezier(.2,.8,.2,1) both; /* new */
}

input.end{
  width:4.6em; max-width:6.6em; min-width:3.2em;
  padding:8px 10px; border-radius:10px; border:1px solid var(--border);
  background:#fff; font-weight:800; outline:none;
  transition:border-color .15s ease, box-shadow .15s ease, transform .06s ease;
}
input.end:focus{box-shadow:0 0 0 3px rgba(37,99,235,.12); border-color:#bfdbfe}
input.end.ok{border-color:var(--ok); box-shadow:0 0 0 3px rgba(22,163,74,.18)}  /* enhanced */
input.end.err{border-color:var(--err); animation:shake .22s linear}

@keyframes shake{25%{transform:translateX(2px)} 50%{transform:translateX(-2px)} 75%{transform:translateX(2px)}}

/* SUCCESS EFFECTS */
@keyframes popIn{
  0%{transform:scale(.92); opacity:0}
  60%{transform:scale(1.04); opacity:1}
  100%{transform:scale(1)}
}
td.win::after{ /* soft radial highlight sweep */
  content:\"\"; position:absolute; left:50%; top:50%; width:12px; height:12px;
  transform:translate(-50%,-50%) scale(1); border-radius:999px;
  background:rgba(16,185,129,.18);
  animation:ripple .55s ease-out forwards;
}
@keyframes ripple{
  0%{opacity:.9; transform:translate(-50%,-50%) scale(1)}
  80%{opacity:.25; transform:translate(-50%,-50%) scale(18)}
  100%{opacity:0; transform:translate(-50%,-50%) scale(22)}
}

/* =========================
   Enhanced styling: CSV list items + Prev/Next
   Paste below your current CSS
   ========================= */

/* CSV list buttons: soft gradient, subtle glass border, hover lift */
.list button{
  position:relative;
  width:100%; text-align:left;
  height:52px; padding:12px 14px; border-radius:12px;
  background:
    linear-gradient(180deg, #ffffff 0%, #fbfdff 100%);
  border:1px solid var(--border);
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,.6),
    0 6px 18px rgba(0,0,0,.06);
  cursor:pointer; font-weight:700;
  display:flex; align-items:center; justify-content:space-between;
  transition: transform .12s ease, box-shadow .12s ease, border-color .12s;
}
.list button:hover{
  transform: translateY(-1px);
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,.7),
    0 10px 22px rgba(0,0,0,.09);
  border-color:#dde3ee;
}
.list button:active{
  transform: translateY(0);
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,.7),
    0 4px 16px rgba(0,0,0,.08);
}
.list button:focus-visible{
  outline:none;
  box-shadow:
    0 0 0 3px rgba(37,99,235,.18),
    inset 0 0 0 1px rgba(255,255,255,.75),
    0 10px 22px rgba(0,0,0,.09);
  border-color:#bfd6ff;
}
.list button .sub{
  font-weight:600; color:var(--muted); font-size:12px;
}

/* Prev/Next pills: airy, accented ring, gentle gradient */
.pill{
  height:46px;
  border-radius:999px;
  background:
    linear-gradient(180deg,#ffffff 0%,#f6f9ff 100%);
  border:1px solid var(--border);
  font-weight:800;
  cursor:pointer;
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,.6),
    0 6px 18px rgba(0,0,0,.06);
  transition: transform .12s ease, box-shadow .12s ease, border-color .12s, background .12s ease;
}
.pill:hover{
  transform: translateY(-1px);
  border-color:#d9e1ef;
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,.7),
    0 10px 22px rgba(0,0,0,.09);
}
.pill:active{
  transform: translateY(0);
  background: linear-gradient(180deg,#f8fbff 0%,#eef4ff 100%);
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,.7),
    0 4px 16px rgba(0,0,0,.08);
}
.pill:focus-visible{
  outline:none;
  box-shadow:
    0 0 0 3px rgba(37,99,235,.18),
    inset 0 0 0 1px rgba(255,255,255,.75),
    0 10px 22px rgba(0,0,0,.09);
  border-color:#bfd6ff;
}
.pill[disabled]{
  opacity:.55; cursor:not-allowed;
  transform:none;
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,.6),
    0 3px 12px rgba(0,0,0,.04);
}