:root {
  color-scheme: dark;
  --bg: #101319;
  --panel: #171b22;
  --panel-2: #1d222b;
  --line: #2c3440;
  --text: #e8edf4;
  --muted: #929eae;
  --accent: #ef9f43;
  --accent-2: #ffc46f;
  --success: #80c995;
  --warning: #ffc46f;
  --danger: #e26969;
  --header: #14181f;
  --hover-bg: #242b35;
  --hover-line: #4b586a;
  --input-bg: #11151b;
  --selected-bg: #332719;
  --shadow: 0 18px 45px rgb(0 0 0 / 24%);
  font-family: Inter, "Noto Sans JP", "Yu Gothic UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { width: 100%; height: 100%; margin: 0; overflow: hidden; background: var(--bg); color: var(--text); }
button, input, select { font: inherit; }
button, label.button { user-select: none; }

.app-header {
  height: 56px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 12px;
  border-bottom: 1px solid var(--line);
  background: var(--header);
}
.app-brand { min-width: 0; display: flex; align-items: center; gap: 9px; }
.app-brand-icon { width: 28px; height: 28px; flex: 0 0 auto; border-radius: 7px; }
.app-header h1 { margin: 0; font-size: 16px; font-weight: 750; letter-spacing: .025em; white-space: nowrap; }
.header-actions, .button-row, .preview-toolbar, .view-tabs, .zoom-label, .check-row {
  display: flex;
  align-items: center;
}
.view-tab {
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}
.view-tab { height: 29px; padding: 0 12px; }
.view-tab.active { background: var(--hover-bg); color: var(--text); font-weight: 700; }
.header-actions { gap: 7px; margin-left: auto; }
.header-actions [hidden] { display: none; }
.history-actions { display: flex; gap: 3px; }
.icon-button {
  width: 32px;
  height: 32px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--panel-2);
  color: var(--text);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}
.icon-button:hover:not(:disabled) { border-color: var(--hover-line); background: var(--hover-bg); }
.icon-button:disabled { color: #596371; cursor: default; opacity: .55; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 0 13px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--panel-2);
  color: var(--text);
  cursor: pointer;
}
.button:hover { border-color: var(--hover-line); background: var(--hover-bg); }
.button.primary { border-color: #d88931; background: var(--accent); color: #24170a; font-weight: 800; }
.button.primary:hover { background: var(--accent-2); }
.button.subtle { background: transparent; }
.button.compact { min-height: 30px; padding: 0 10px; font-size: 12px; }
.button.wide { width: 100%; }
.button.danger { color: #ffadad; }

.workspace {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  height: calc(100% - 56px);
  min-height: 0;
}
.control-panel {
  display: grid;
  grid-template-rows: auto minmax(180px, 1fr) auto;
  min-height: 0;
  border-right: 1px solid var(--line);
  background: var(--panel);
}
.import-section, .selected-section { padding: 13px; border-bottom: 1px solid var(--line); }
.import-section h2, .selected-section h2 {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: .15em;
  text-transform: uppercase;
}
.asset-section {
  display: flex;
  min-height: 0;
  flex-direction: column;
  border-bottom: 1px solid var(--line);
}
.selected-section { border-bottom: 0; }
.panel-heading {
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  border-bottom: 1px solid var(--line);
}
.panel-heading strong { font-size: 13px; }
.panel-heading span { color: var(--muted); font-size: 10px; }
.import-actions {
  display: grid;
  gap: 7px;
}
.search-row { padding: 9px; border-bottom: 1px solid var(--line); }
input[type="search"], select {
  width: 100%;
  height: 34px;
  padding: 0 9px;
  border: 1px solid var(--line);
  border-radius: 7px;
  outline: none;
  background: var(--input-bg);
  color: var(--text);
}
input:focus, select:focus { border-color: var(--accent); }
.asset-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  align-content: start;
  gap: 6px;
  min-height: 0;
  padding: 9px;
  overflow-y: auto;
}
.asset-card {
  min-width: 0;
  padding: 5px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #11161c;
  color: var(--muted);
  cursor: pointer;
}
.asset-card:hover { border-color: var(--hover-line); color: var(--text); }
.asset-card.selected { border-color: var(--accent); background: var(--selected-bg); color: var(--accent-2); }
.asset-card canvas {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
  image-rendering: pixelated;
}
.asset-card span { display: block; overflow: hidden; margin-top: 4px; font-size: 10px; text-align: center; text-overflow: ellipsis; white-space: nowrap; }

.preview-stage { display: grid; grid-template-rows: 45px minmax(0, 1fr) 28px; min-width: 0; min-height: 0; background: #0b0e12; }
.preview-toolbar { justify-content: space-between; gap: 12px; padding: 0 12px; border-bottom: 1px solid var(--line); background: var(--panel); }
.view-tabs { gap: 3px; }
.zoom-label { gap: 8px; color: var(--muted); font-size: 11px; }
.zoom-label input { width: 120px; accent-color: var(--accent); }
.zoom-label output { min-width: 40px; color: var(--accent-2); }
.preview-scroller {
  position: relative;
  min-height: 0;
  overflow: auto;
  background-color: #c8c8c8;
  background-image:
    linear-gradient(45deg, #aaa 25%, transparent 25%),
    linear-gradient(-45deg, #aaa 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #aaa 75%),
    linear-gradient(-45deg, transparent 75%, #aaa 75%);
  background-position: 0 0, 0 12px, 12px -12px, -12px 0;
  background-size: 24px 24px;
}
#preview-canvas {
  display: none;
  margin: 22px;
  background: transparent;
  image-rendering: pixelated;
  box-shadow: 0 12px 32px rgb(0 0 0 / 25%);
}
#empty-message {
  position: absolute;
  top: 50%;
  left: 50%;
  margin: 0;
  transform: translate(-50%, -50%);
  color: #414852;
  font-size: 13px;
}
.status-bar { display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 16px; padding: 0 10px; border-top: 1px solid var(--line); background: var(--panel); color: var(--muted); font-size: 10px; }
.status-bar #status.error { color: var(--danger); }
.status-bar #status.warning { color: var(--warning); }
#save-status { color: var(--success); }
#save-status.error { color: var(--danger); }
#save-status::before { content: "●"; margin-right: 5px; font-size: 8px; }

.asset-details { display: grid; gap: 8px; margin-bottom: 12px; font-size: 12px; }
.asset-details.empty { color: var(--muted); }
.detail-row { display: flex; justify-content: space-between; gap: 8px; }
.detail-row span { color: var(--muted); }
.button-row { gap: 7px; flex-wrap: wrap; }
.clear-button { margin-left: auto; color: var(--muted); }
.field-label { display: grid; gap: 6px; color: var(--muted); font-size: 11px; }
.check-row { align-items: flex-start; gap: 8px; margin-top: 13px; color: #c7d0dc; font-size: 11px; line-height: 1.5; }
.check-row input { margin-top: 2px; accent-color: var(--accent); }
.help-text { margin: 11px 0 0; color: var(--muted); font-size: 10px; line-height: 1.5; }
dialog {
  width: min(390px, calc(100% - 30px));
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--panel);
  color: var(--text);
  box-shadow: var(--shadow);
}
dialog::backdrop { background: rgb(0 0 0 / 65%); }
dialog h2 { margin: 0 0 10px; font-size: 17px; }
dialog p { color: var(--muted); font-size: 12px; line-height: 1.6; }
dialog .field-label { margin-top: 16px; }
.file-field { display: grid; gap: 6px; margin-top: 12px; color: var(--muted); font-size: 11px; }
.text-repair-fields {
  margin-top: 18px;
  padding-top: 15px;
  border-top: 1px solid var(--line);
}
.text-repair-fields strong { font-size: 12px; }
.manual-dat-fields {
  margin-top: 18px;
  padding-top: 4px;
  border-top: 1px solid var(--line);
}
.manual-dat-fields summary {
  padding-top: 12px;
  color: var(--muted);
  font-size: 11px;
  cursor: pointer;
}
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 20px; }
.dialog-choice-list { display: grid; gap: 8px; margin-top: 16px; }
.restore-dialog { width: min(440px, calc(100% - 30px)); }
.restore-dialog h2 { margin-bottom: 0; }
.restore-description { margin: 10px 0 14px; }
.restore-dialog .dialog-actions { margin-top: 14px; }
.restore-date {
  margin: 0;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-2);
  color: var(--accent-2);
  font-size: 11px;
}

@media (max-width: 900px) {
  .workspace { grid-template-columns: 260px minmax(0, 1fr); }
  .asset-list { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 700px) {
  html, body { overflow: auto; }
  .app-header {
    height: auto;
    min-height: 56px;
    flex-wrap: wrap;
    gap: 8px;
    padding-block: 9px;
  }
  .app-brand { width: 100%; }
  .app-header h1 { flex: 1; }
  .header-actions { width: 100%; }
  .header-actions > .button { flex: 1; }
  .workspace { display: flex; height: auto; flex-direction: column; }
  .control-panel {
    height: 620px;
    flex: none;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .preview-stage { min-height: 560px; }
  .preview-toolbar { align-items: flex-start; flex-direction: column; justify-content: center; }
  .zoom-label { width: 100%; }
  .zoom-label input { min-width: 0; flex: 1; }
}