:root {
  --bg: #eef4f6;
  --surface: #fff;
  --ink: #1a1a1a;
  --muted: #666;
  --line: #d4d4d4;
  --line-strong: #a3a3a3;
  --ok: #166534;
  --ok-bg: #f0fdf4;
  --ok-line: #86efac;
  --warn-bg: #fef9c3;
  --warn-line: #fde047;
  --err: #b91c1c;
  --rest: #e8f5e9;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background-color: var(--bg);
  background-image: url("images/bg1.webp");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Noto Sans TC", system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
}

.page {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

.hero {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  border-radius: 8px;
  object-fit: cover;
}

.hero h1 {
  font-size: 1.35rem;
  font-weight: 600;
  margin: 0;
}

.lede {
  color: var(--muted);
  margin: 0;
  max-width: 40rem;
}

.upload-panel {
  margin-top: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}

.upload-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  background: #fafafa;
}

.upload-panel-head h2 {
  font-size: 0.8125rem;
  font-weight: 600;
  margin: 0;
}

.upload-count {
  font-size: 0.8125rem;
  color: var(--muted);
  margin: 0;
}

.upload-count.ready {
  color: var(--ok);
  font-weight: 600;
}

.uploads {
  display: flex;
  flex-direction: column;
}

.upload-card {
  display: block;
  position: relative;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
  background: var(--surface);
  transition: background 0.1s;
}

.upload-card:last-of-type {
  border-bottom: none;
}

.upload-card:hover {
  background: #fafafa;
}

.upload-card.drag {
  background: #f0f9ff;
}

.upload-card.has-file {
  background: var(--ok-bg);
}

.upload-card.has-file:hover {
  background: #dcfce7;
}

.file-input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  opacity: 0;
  cursor: pointer;
  font-size: 0;
  z-index: 2;
}

.upload-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.upload-step {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  line-height: 22px;
  text-align: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted);
  background: #eee;
  border-radius: 4px;
}

.upload-card.has-file .upload-step {
  background: var(--ok-line);
  color: var(--ok);
}

.upload-meta {
  flex: 1;
  min-width: 0;
}

.upload-title {
  font-weight: 600;
  margin: 0;
  font-size: 0.9375rem;
}

.upload-hint {
  margin: 2px 0 0;
  font-size: 0.8125rem;
  color: var(--muted);
  line-height: 1.45;
}

.upload-status {
  flex-shrink: 0;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid var(--line);
  color: var(--muted);
  background: #f5f5f5;
}

.upload-card.has-file .upload-status {
  border-color: var(--ok-line);
  color: var(--ok);
  background: #fff;
}

.upload-file {
  margin: 10px 0 0 34px;
  font-size: 0.8125rem;
  word-break: break-all;
}

.upload-file.empty {
  color: var(--muted);
  font-style: normal;
}

.upload-card.has-file .upload-file {
  color: var(--ink);
  font-weight: 500;
}

.pick-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 16px;
  border-top: 1px solid var(--line);
  background: #fafafa;
}

.pick-actions {
  display: flex;
  flex-shrink: 0;
  gap: 8px;
}

.convert-options {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 24px;
  padding: 14px 16px;
  border-top: 1px solid var(--line);
  background: #fff;
}

.option-check {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-size: 0.8125rem;
  cursor: pointer;
}

.option-check input {
  flex-shrink: 0;
  margin: 0;
  cursor: pointer;
}

.option-stack {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.option-note {
  margin: 0 0 0 24px;
  font-size: 0.75rem;
  line-height: 1.4;
  color: var(--muted);
}

.option-stack:has(#opt-append-leave:checked) .option-note {
  color: #854d0e;
}

.pick-hint {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--muted);
}

.pick-hint.ready {
  color: var(--ok);
}

button {
  appearance: none;
  border: 1px solid #333;
  background: #333;
  color: #fff;
  padding: 8px 16px;
  border-radius: 4px;
  font: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
}

button:hover:not(:disabled) {
  background: #1a1a1a;
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

button.ghost {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--line-strong);
}

button.ghost:hover:not(:disabled) {
  background: #f5f5f5;
}

.error {
  color: var(--err);
  margin: 16px 0 0;
  font-size: 0.875rem;
}

.error.soft {
  background: var(--warn-bg);
  border: 1px solid var(--warn-line);
  border-radius: 4px;
  padding: 10px 12px;
  color: #854d0e;
  margin: 12px 0 0;
}

.error.soft ul {
  margin: 6px 0 0;
  padding-left: 18px;
}

.warn-group {
  margin-top: 10px;
}

.warn-group h3 {
  margin: 0 0 2px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: #854d0e;
}

.warn-group + .warn-group {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--warn-line);
}

.rules-panel {
  margin: 28px 0 0;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}

.rules-panel + .rules-panel {
  margin-top: 12px;
}

.rules-panel > summary {
  list-style: none;
  cursor: pointer;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--muted);
  padding: 12px 16px;
  background: #fafafa;
  user-select: none;
}

.rules-panel > summary::-webkit-details-marker {
  display: none;
}

.rules-panel > summary::after {
  content: "";
  float: right;
  width: 0.4em;
  height: 0.4em;
  margin-top: 0.35em;
  border-right: 1.5px solid var(--muted);
  border-bottom: 1.5px solid var(--muted);
  transform: rotate(45deg);
}

.rules-panel[open] > summary::after {
  margin-top: 0.55em;
  transform: rotate(-135deg);
}

.rules-panel[open] > summary {
  border-bottom: 1px solid var(--line);
}

.rules-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 24px;
  padding: 16px;
}

.how-to {
  padding: 16px 16px 16px 8px;
}

.how-to ol {
  margin: 0;
  padding-left: 1.6em;
  font-size: 0.8125rem;
  color: var(--ink);
}

.how-to li + li {
  margin-top: 8px;
}

.rules h2,
.previews h2 {
  font-size: 0.8125rem;
  font-weight: 600;
  margin: 0 0 8px;
  color: var(--muted);
  text-transform: none;
}

.plain {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
}

.previews table {
  width: max-content;
  min-width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
}

.plain th,
.plain td,
.previews th,
.previews td {
  border: 1px solid var(--line);
  padding: 6px 10px;
  text-align: left;
  white-space: nowrap;
}

.plain th {
  background: #fafafa;
  color: var(--muted);
  font-weight: 500;
}

.result-card {
  margin-top: 24px;
  padding: 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 12px;
}

#summary-text {
  margin: 0;
  font-weight: 600;
  font-size: 0.9375rem;
}

.previews {
  display: grid;
  gap: 20px;
  margin-top: 28px;
  width: 100%;
}

.preview-options {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  padding: 10px 12px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.previews article {
  min-width: 0;
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
  overflow-y: auto;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 4px;
  max-height: 400px;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) #f4f4f4;
}

.table-wrap::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

.table-wrap::-webkit-scrollbar-track {
  background: #f4f4f4;
}

.table-wrap::-webkit-scrollbar-thumb {
  background: var(--line-strong);
  border-radius: 8px;
  border: 2px solid #f4f4f4;
}

.table-wrap::-webkit-scrollbar-thumb:hover {
  background: #737373;
}

.table-wrap::-webkit-scrollbar-corner {
  background: #f4f4f4;
}

.previews td.rest {
  background: var(--rest);
}

.previews td.diff {
  background: #fff7ed;
  box-shadow: inset 0 0 0 1.5px #fb923c;
}

.previews td.rest.diff {
  background: #ffedd5;
}

.previews th.unmatched,
.previews td.unmatched {
  background: var(--warn-bg);
  box-shadow: inset 0 0 0 1.5px #fca5a5;
}

.tag-unknown,
.tag-source {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  border-radius: 3px;
  padding: 0 4px;
  margin-left: 4px;
  vertical-align: middle;
}

.tag-unknown {
  color: var(--err);
  background: var(--warn-bg);
  border: 1px solid #fca5a5;
}

.tag-floor {
  color: #0f766e;
  background: #ccfbf1;
  border: 1px solid #5eead4;
}

.tag-kitchen {
  color: #1d4ed8;
  background: #dbeafe;
  border: 1px solid #93c5fd;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 16px;
  margin-top: 40px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.75rem;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 720px) {
  .page {
    padding: 20px 12px 48px;
  }

  .upload-row {
    flex-wrap: wrap;
  }

  .upload-status {
    margin-left: 34px;
  }

  .rules-grid {
    grid-template-columns: 1fr;
  }

  .pick-row {
    flex-direction: column;
    align-items: stretch;
  }

  .convert-options,
  .preview-options {
    flex-direction: column;
    gap: 12px;
  }
}