:root {
  --bg: #0b0f14;
  --bg-soft: #10161e;
  --panel: #121a24;
  --panel-2: #0e151d;
  --border: #223042;
  --text: #e7eef7;
  --muted: #8fa0b3;
  --accent: #a3e635;
  --accent-deep: #22c55e;
  --amber: #fbbf24;
  --danger: #f87171;
  --radius: 14px;
  --mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background:
    radial-gradient(1100px 500px at 50% -180px, rgba(34, 197, 94, 0.14), transparent 65%),
    radial-gradient(700px 400px at 90% 0%, rgba(251, 191, 36, 0.07), transparent 60%),
    var(--bg);
  color: var(--text);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, sans-serif;
  min-height: 100vh;
}

.shell {
  max-width: 780px;
  margin: 0 auto;
  padding: 56px 20px 48px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

/* ------------------------------------------------------------------- hero */

.hero h1 {
  margin: 6px 0 10px;
  font-size: clamp(30px, 5vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.hero .accent {
  background: linear-gradient(90deg, var(--accent-deep), var(--accent) 60%, var(--amber));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.eyebrow {
  margin: 0;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.lede { margin: 0; color: var(--muted); }

code {
  font-family: var(--mono);
  font-size: 0.92em;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1px 5px;
}

/* --------------------------------------------------------------- dropzone */

.dropzone {
  border: 1.5px dashed #2c3d54;
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(163, 230, 53, 0.03), transparent 70%), var(--panel-2);
  padding: 34px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease;
  outline: none;
}

.dropzone:hover, .dropzone:focus-visible {
  border-color: #3f5a7a;
}

.dropzone.drag {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(163, 230, 53, 0.12), 0 18px 40px -24px rgba(163, 230, 53, 0.55);
  transform: translateY(-1px);
}

.drop-inner p { margin: 4px 0; }

.plate-icon {
  font-size: 34px;
  animation: bob 2.6s ease-in-out infinite;
}

@keyframes bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

.drop-title strong { font-size: 17px; }

.drop-sub { color: var(--muted); font-size: 14px; }

.link {
  appearance: none;
  background: none;
  border: 0;
  color: var(--accent);
  font: inherit;
  cursor: pointer;
  padding: 0;
  text-decoration: underline dotted;
}

.link:hover { text-decoration: underline solid; }

/* ----------------------------------------------------------------- panels */

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  animation: rise .22s ease both;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.panel-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 6px;
}

.panel h2 { margin: 0; font-size: 18px; }

.hint { color: var(--muted); font-size: 13.5px; margin: 0 0 14px; }
.hint.inline { margin: 0 0 0 10px; }

.chip {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  border: 1px solid var(--border);
  background: var(--panel-2);
  border-radius: 999px;
  padding: 2px 10px;
  white-space: nowrap;
}

/* -------------------------------------------------------------- file list */

.file-list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.file {
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-areas: "radio name remove" "radio meta remove";
  align-items: center;
  column-gap: 12px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  border-radius: 10px;
  padding: 10px 12px;
}

.file input[type="radio"] {
  grid-area: radio;
  appearance: none;
  width: 17px;
  height: 17px;
  margin: 0;
  border: 2px solid #405570;
  border-radius: 50%;
  cursor: pointer;
  transition: border-color .15s ease, box-shadow .15s ease;
}

.file input[type="radio"]:checked {
  border-color: var(--accent);
  box-shadow: inset 0 0 0 4px var(--accent);
}

.file-name { grid-area: name; font-weight: 600; overflow-wrap: anywhere; }

.file-meta { grid-area: meta; color: var(--muted); font-size: 12.5px; font-family: var(--mono); }

.file.invalid { border-color: rgba(248, 113, 113, 0.5); }
.file.invalid .file-meta { color: var(--danger); }

.remove {
  grid-area: remove;
  appearance: none;
  background: none;
  border: 0;
  color: var(--muted);
  font-size: 15px;
  cursor: pointer;
  padding: 6px;
  border-radius: 8px;
  line-height: 1;
}

.remove:hover { color: var(--danger); background: rgba(248, 113, 113, 0.08); }

/* ---------------------------------------------------------------- buttons */

.primary {
  appearance: none;
  border: 0;
  border-radius: 11px;
  padding: 12px 20px;
  font: inherit;
  font-weight: 700;
  color: #0b1405;
  background: linear-gradient(180deg, #b8f04c, var(--accent));
  cursor: pointer;
  box-shadow: 0 12px 28px -16px rgba(163, 230, 53, 0.9);
  transition: filter .15s ease, transform .15s ease;
}

.primary:hover:not(:disabled) { filter: brightness(1.06); transform: translateY(-1px); }
.primary:active:not(:disabled) { transform: translateY(0); }
.primary:disabled { opacity: 0.45; cursor: not-allowed; box-shadow: none; }

/* --------------------------------------------------------------- progress */

.progress-panel { padding: 22px 22px 18px; }

.progress-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 12px;
  font-weight: 600;
}

.pct { font-family: var(--mono); color: var(--accent); font-size: 14px; }

.progress-track {
  height: 14px;
  border-radius: 999px;
  background: #070b10;
  border: 1px solid #1d2a3a;
  overflow: hidden;
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.55);
}

.progress-bar {
  position: relative;
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent-deep), var(--accent) 55%, var(--amber));
  background-size: 220% 100%;
  animation: slide 2.6s linear infinite;
  transition: width .5s cubic-bezier(.22, 1, .36, 1);
  box-shadow: 0 0 14px rgba(163, 230, 53, 0.35);
}

.progress-bar::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(100deg, transparent 30%, rgba(255, 255, 255, 0.38) 50%, transparent 70%);
  background-size: 250% 100%;
  animation: shimmer 1.7s linear infinite;
}

@keyframes slide {
  from { background-position: 0% 0; }
  to { background-position: 220% 0; }
}

@keyframes shimmer {
  from { background-position: 180% 0; }
  to { background-position: -80% 0; }
}

.progress-panel.done .progress-bar {
  background: linear-gradient(90deg, #4ade80, #86efac);
  animation: none;
}

.progress-panel.done .progress-bar::after { animation: none; opacity: 0; }

.quip {
  margin: 12px 0 0;
  color: var(--muted);
  font-style: italic;
  font-family: var(--mono);
  font-size: 13.5px;
  min-height: 1.3em;
  letter-spacing: 0.01em;
}

.progress-panel.done .quip { color: var(--accent); }

/* ---------------------------------------------------------------- results */

.result-line { margin: 8px 0 16px; color: var(--muted); font-size: 14px; }

.report-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin-bottom: 16px;
}

.report-table th, .report-table td {
  text-align: left;
  padding: 7px 10px;
  border-bottom: 1px solid #1b2736;
}

.report-table th { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; }

.report-table td:not(:first-child), .report-table th:not(:first-child) {
  font-family: var(--mono);
  text-align: right;
}

.report-table tbody tr:nth-child(even) { background: rgba(255, 255, 255, 0.015); }

.warnings { margin: 6px 0 0; padding-left: 20px; color: var(--muted); font-size: 14px; }
.warnings li { margin: 4px 0; }

.rules { margin-top: 14px; color: var(--muted); font-size: 14px; }
.rules summary { cursor: pointer; color: var(--text); font-weight: 600; }
.rules ul { margin: 10px 0 0; padding-left: 20px; }
.rules li { margin: 5px 0; }
.rules strong { color: var(--text); }

.perf {
  margin: 16px 0 4px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--panel-2);
  overflow: hidden;
}

.perf-summary {
  cursor: pointer;
  padding: 10px 14px;
  color: var(--accent);
  font-weight: 600;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.01em;
  user-select: none;
}
.perf-summary::-webkit-details-marker { display: none; }
.perf-summary::before { content: "▸ "; display: inline-block; transition: transform .15s ease; }
.perf[open] .perf-summary::before { transform: rotate(90deg); }

.perf-body {
  margin: 0;
  padding: 12px 14px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.5;
  white-space: pre-wrap;
  overflow-x: auto;
}

.perf-copy {
  margin: 0 14px 10px;
  padding: 7px 12px;
  border-radius: 8px;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  font: inherit;
  font-size: 12.5px;
  cursor: pointer;
}
.perf-copy:hover { border-color: var(--accent-deep); color: var(--accent); }

.error-panel { border-color: rgba(248, 113, 113, 0.45); background: linear-gradient(180deg, rgba(248,113,113,.06), transparent 60%), var(--panel); }
.error-panel h2 { color: var(--danger); }
.error-panel p { color: var(--muted); white-space: pre-wrap; margin-bottom: 0; }

/* ---------------------------------------------------------------- footer */

.footer {
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--muted);
  font-size: 12.5px;
  border-top: 1px solid #16202c;
  padding-top: 16px;
}

.footer a { color: inherit; }
.footer-note { opacity: 0.8; }

@media (max-width: 560px) {
  .shell { padding-top: 34px; }
  .file { grid-template-columns: auto 1fr auto; }
}