:root {
  --bg: #0b1016;
  --panel: rgba(13, 21, 31, 0.86);
  --panel-strong: rgba(20, 31, 45, 0.95);
  --line: rgba(164, 183, 201, 0.18);
  --text: #edf3f7;
  --muted: #98a9b8;
  --accent: #d8ba6e;
  --accent-deep: #6e5321;
  --danger: #ff8b8b;
  --ok: #8ed9b4;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  --font-ui: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-display: "Baskerville", "Times New Roman", "Songti SC", serif;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: var(--font-ui);
  background:
    radial-gradient(circle at top, rgba(216, 186, 110, 0.18), transparent 24%),
    radial-gradient(circle at 80% 20%, rgba(71, 110, 152, 0.24), transparent 26%),
    linear-gradient(180deg, #111926 0%, #080b0f 100%);
}

body.modal-open {
  overflow: hidden;
}

.page-shell {
  width: min(1280px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 20px 0 40px;
}

.hero {
  padding: 6px 0 16px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--accent);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 11px;
}

.hero-copy {
  max-width: 560px;
}

.hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.1;
  font-weight: 700;
}

.hero-copy p:last-child {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.layout {
  display: grid;
  grid-template-columns: 390px minmax(0, 1fr);
  gap: 20px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.upload-panel,
.result-panel {
  padding: 20px;
}

.panel-note {
  margin: -4px 0 16px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.panel-head h2,
.table-title {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
}

.hint,
.status-text {
  color: var(--muted);
  font-size: 13px;
}

.dropzone {
  display: grid;
  place-items: center;
  min-height: 220px;
  padding: 20px;
  border: 1px dashed rgba(216, 186, 110, 0.45);
  border-radius: 20px;
  background:
    linear-gradient(135deg, rgba(216, 186, 110, 0.08), rgba(81, 104, 138, 0.08)),
    rgba(255, 255, 255, 0.02);
  text-align: center;
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.dropzone.dragover {
  transform: translateY(-2px);
  border-color: var(--accent);
  background:
    linear-gradient(135deg, rgba(216, 186, 110, 0.16), rgba(81, 104, 138, 0.18)),
    rgba(255, 255, 255, 0.02);
}

.dropzone-title {
  display: block;
  font-size: 18px;
  font-weight: 700;
}

.dropzone-subtitle {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
}

.preview-card,
.json-card,
.history-card {
  margin-top: 18px;
  padding: 14px;
  border-radius: 18px;
  background: var(--panel-strong);
  border: 1px solid var(--line);
}

.json-summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  list-style: none;
}

.history-head {
  margin-bottom: 12px;
}

.history-list {
  display: grid;
  gap: 10px;
}

.history-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  padding: 12px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.history-item.is-selected {
  border-color: rgba(216, 186, 110, 0.55);
  box-shadow: inset 0 0 0 1px rgba(216, 186, 110, 0.2);
}

.history-main {
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
  cursor: pointer;
}

.history-meta,
.history-submeta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.history-meta {
  margin-bottom: 6px;
}

.history-meta strong {
  font-size: 14px;
}

.history-submeta {
  color: var(--muted);
  font-size: 12px;
}

.history-diff {
  display: grid;
  gap: 6px;
  margin-top: 10px;
  font-size: 13px;
  color: #dce7f0;
}

.history-delete {
  align-self: start;
}

.history-empty {
  padding: 18px 14px;
  border-radius: 16px;
  border: 1px dashed var(--line);
  color: var(--muted);
  text-align: center;
  font-size: 13px;
}

.json-summary::-webkit-details-marker {
  display: none;
}

.preview-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  color: var(--muted);
  font-size: 13px;
}

.preview-actions {
  display: flex;
  gap: 8px;
}

.image-button {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: zoom-in;
}

#preview-image {
  width: 100%;
  display: block;
  border-radius: 14px;
  object-fit: contain;
  max-height: 420px;
  background: #06090d;
}

.actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.primary-button,
.ghost-button {
  appearance: none;
  border: 0;
  border-radius: 999px;
  font: inherit;
  cursor: pointer;
  transition: transform 180ms ease, opacity 180ms ease, background 180ms ease;
}

.primary-button {
  padding: 12px 18px;
  background: linear-gradient(135deg, #f0d68b, #bc9051);
  color: #1f1607;
  font-weight: 800;
}

.ghost-button {
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.primary-button:disabled {
  opacity: 0.48;
  cursor: not-allowed;
}

.primary-button:hover:not(:disabled),
.ghost-button:hover {
  transform: translateY(-1px);
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 180px));
  gap: 12px;
}

.summary-card {
  padding: 14px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line);
}

.summary-label {
  display: block;
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 8px;
}

.summary-card strong {
  font-size: 18px;
}

.tables {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.tables > section {
  min-width: 0;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.result-table {
  width: 100%;
  border-collapse: collapse;
  border-radius: 18px;
  overflow: hidden;
  background: var(--panel-strong);
  border: 1px solid var(--line);
}

.result-table th,
.result-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  font-size: 13px;
}

.result-table tr:last-child td {
  border-bottom: 0;
}

.result-table .col-index {
  width: 44px;
  white-space: nowrap;
}

.result-table .col-name {
  width: 52%;
  white-space: nowrap;
}

.result-table .col-value {
  width: 72px;
  white-space: nowrap;
}

.result-table .col-tier {
  width: 56px;
  white-space: nowrap;
}

.result-table .col-state {
  width: 104px;
  white-space: nowrap;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 12px;
  line-height: 1;
  white-space: nowrap;
}

.pill.locked {
  background: rgba(216, 186, 110, 0.16);
  color: #f0d68b;
}

.pill.new {
  background: rgba(142, 217, 180, 0.16);
  color: var(--ok);
}

.pill.changed {
  background: rgba(111, 185, 255, 0.18);
  color: #8dc2ff;
}

.pill.empty {
  background: rgba(255, 255, 255, 0.06);
  color: var(--muted);
}

.result-table tr.is-changed td {
  background: rgba(71, 110, 152, 0.12);
}

.error-text {
  color: var(--danger);
}

pre {
  margin: 12px 0 0;
  white-space: pre-wrap;
  word-break: break-word;
  color: #d7e2eb;
  font-size: 12px;
  line-height: 1.6;
}

.image-modal {
  position: fixed;
  inset: 0;
  display: none;
  place-items: center;
  padding: 24px;
  background: rgba(2, 6, 10, 0.82);
  backdrop-filter: blur(10px);
  z-index: 1000;
  cursor: zoom-out;
}

.image-modal.is-open {
  display: grid;
}

.image-modal-stage {
  position: relative;
  display: grid;
  gap: 12px;
  justify-items: center;
  width: min(92vw, 1600px);
}

.image-modal img {
  max-width: min(92vw, 1600px);
  max-height: calc(100vh - 100px);
  border-radius: 18px;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.48);
  background: #05080d;
  cursor: zoom-out;
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  border: 0;
  border-radius: 999px;
  padding: 10px 14px;
  font: inherit;
  color: var(--text);
  background: rgba(11, 16, 22, 0.76);
  cursor: pointer;
  z-index: 1001;
}

.modal-hint {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 1024px) {
  .layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .page-shell {
    width: min(100vw - 20px, 1280px);
    padding-top: 28px;
  }

  .preview-meta,
  .actions {
    align-items: start;
    flex-direction: column;
  }

  .preview-actions {
    width: 100%;
  }

  .ghost-button,
  .primary-button {
    width: 100%;
  }

  .summary-grid,
  .tables {
    grid-template-columns: 1fr;
  }

  .history-item {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    max-width: none;
  }
}