:root {
  --bg: #f4f4f2;
  --surface: #ffffff;
  --ink: #1c1c1a;
  --ink-soft: #6b6b66;
  --ink-faint: #9a9a94;
  --line: #e2e2dd;
  --accent: #1f5f4f;
  --accent-soft: #e8f1ee;
  --danger: #a33a2c;
  --sel: #2f7de1;
  --radius: 8px;
  --sidebar-w: 330px;
  --topbar-h: 56px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue",
               "PingFang TC", "Noto Sans TC", sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;

  /* 直向排列：品牌條、工具列、主體、頁尾。
     主體用 flex:1 撐開，就不必為了上下多幾條而回頭改高度計算。 */
  display: flex;
  flex-direction: column;
}

/* 只給螢幕閱讀器看的說明文字 */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

h2, h3 { margin: 0; font-weight: 600; }

/* ---------- Dong Tools 品牌條 ---------- */

/* 這條在淺色與深色模式都維持深色，跨工具才是同一條 */
.dong-tools-bar {
  flex: none;
  background: #111111;
  color: #ffffff;
  border-bottom: 1px solid #282828;
}

.dong-tools-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 44px;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 28px;
}

.dong-tools-brand,
.dong-tools-hub-link {
  display: inline-flex;
  align-items: center;
  color: inherit;
  text-decoration: none;
}

.dong-tools-brand {
  gap: 9px;
  font-size: 0.86rem;
  font-weight: 750;
  letter-spacing: -0.01em;
}

.dong-tools-brand img {
  width: 23px;
  height: 23px;
  border-radius: 6px;
}

.dong-tools-hub-link {
  gap: 5px;
  color: #a3a3a3;
  font-size: 0.78rem;
  font-weight: 650;
}

.dong-tools-brand:hover,
.dong-tools-hub-link:hover { color: #ffffff; }

.dong-tools-brand:focus-visible,
.dong-tools-hub-link:focus-visible {
  border-radius: 3px;
  outline: 2px solid #ffffff;
  outline-offset: 4px;
}

/* ---------- 頂列 ---------- */

.topbar {
  flex: none;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  position: relative;
  z-index: 30;
}

.brand {
  font-weight: 600;
  letter-spacing: 0.02em;
}

.topbar-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

/* ---------- 按鈕 ---------- */

.btn {
  font: inherit;
  font-size: 13px;
  padding: 7px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.12s, border-color 0.12s, opacity 0.12s;
}

.btn:hover:not(:disabled) { background: #f0f0ec; }

.btn:disabled {
  opacity: 0.4;
  cursor: default;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn-primary:hover:not(:disabled) { background: #19503f; }

.btn-small { padding: 5px 10px; font-size: 12px; }
.btn-block { width: 100%; }

label.btn { display: inline-block; }
label.btn:has(input:disabled) { opacity: 0.4; }

.link-btn {
  font: inherit;
  font-size: 12px;
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  padding: 2px 0;
}

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

/* ---------- 版面 ---------- */

.layout {
  display: flex;
  flex: 1;
  min-height: 0;   /* 沒有這行，內部的捲動區會把版面撐破 */
}

.sidebar {
  width: var(--sidebar-w);
  flex: 0 0 var(--sidebar-w);
  background: var(--surface);
  border-right: 1px solid var(--line);
  overflow-y: auto;
  padding: 4px 0 40px;
}

.panel {
  padding: 16px;
  border-bottom: 1px solid var(--line);
}

.panel:last-child { border-bottom: none; }

.panel-muted { background: #fafaf8; }

.panel-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 4px;
}

.panel h2 { font-size: 13px; letter-spacing: 0.03em; }

.hint {
  margin: 4px 0 12px;
  font-size: 12px;
  color: var(--ink-faint);
  line-height: 1.45;
}

.steps {
  margin: 8px 0 0;
  padding-left: 18px;
  font-size: 12px;
  color: var(--ink-soft);
}

.steps li { margin-bottom: 4px; }

/* ---------- 欄位清單 ---------- */

.field-list { display: flex; flex-direction: column; gap: 6px; }

.field-row {
  display: grid;
  grid-template-columns: 78px 1fr auto;
  gap: 6px;
  align-items: center;
}

.field-row input {
  font: inherit;
  font-size: 12px;
  padding: 6px 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  color: var(--ink);
  min-width: 0;
}

.field-row input:focus {
  outline: 2px solid var(--accent-soft);
  border-color: var(--accent);
}

.field-row .f-label {
  background: #fafaf8;
  color: var(--ink-soft);
}

.field-actions { display: flex; gap: 2px; }

.icon-btn {
  font: inherit;
  font-size: 11px;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 6px;
  padding: 5px 7px;
  cursor: pointer;
  color: var(--ink-soft);
  white-space: nowrap;
}

.icon-btn:hover { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }
.icon-btn.is-armed { background: var(--accent); border-color: var(--accent); color: #fff; }
.icon-btn-del:hover { background: #fbeae7; border-color: var(--danger); color: var(--danger); }

/* ---------- 圖片清單 ---------- */

.img-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.img-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fafaf8;
  display: flex;
  flex-direction: column;
}

.img-card.is-armed { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }

.img-thumb {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4px;
  background:
    linear-gradient(45deg, #eee 25%, transparent 25%, transparent 75%, #eee 75%) 0 0 / 12px 12px,
    linear-gradient(45deg, #eee 25%, transparent 25%, transparent 75%, #eee 75%) 6px 6px / 12px 12px,
    #fff;
}

.img-thumb img { max-width: 100%; max-height: 100%; object-fit: contain; }

.img-card-name {
  font-size: 11px;
  padding: 4px 6px 0;
  color: var(--ink-soft);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.img-card-actions {
  display: flex;
  gap: 4px;
  padding: 4px 6px 6px;
}

.img-card-actions .icon-btn { flex: 1; text-align: center; padding: 4px; }

/* ---------- 開場說明 ---------- */

.panel-lead { background: var(--accent-soft); }

.lead {
  margin: 0;
  font-size: 13px;
  color: var(--ink);
  line-height: 1.6;
}

.lead strong { color: var(--accent); }

/* ---------- 符號 ---------- */

.symbol-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.symbol-row .btn {
  font-size: 15px;
  padding: 6px 0;
  text-align: center;
}

/* ---------- 快捷鍵表 ---------- */

.keys {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 12px;
  margin: 8px 0 0;
  font-size: 12px;
}

.keys dt { color: var(--ink); white-space: nowrap; }
.keys dd { margin: 0; color: var(--ink-faint); }

/* ---------- 舞台 ---------- */

.stage {
  flex: 1;
  overflow: auto;
  position: relative;
  padding: 24px;
}

.stage.is-armed { cursor: crosshair; }
.stage.is-dragover { background: var(--accent-soft); }

.empty-state {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.empty-inner { text-align: center; color: var(--ink-faint); }
.empty-icon { font-size: 40px; margin-bottom: 8px; }
.empty-inner h3 { font-size: 15px; color: var(--ink-soft); margin-bottom: 4px; }
.empty-inner p { margin: 0; font-size: 13px; }

.pages {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.page-wrap {
  position: relative;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,0.14), 0 6px 18px rgba(0,0,0,0.07);
  flex: none;
}

.page-wrap canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.overlay {
  position: absolute;
  inset: 0;
}

.stage.is-armed .overlay { cursor: crosshair; }

/* ---------- 放上去的元素 ---------- */

.mark {
  position: absolute;
  cursor: grab;
  user-select: none;
  transform-origin: top left;
}

.mark.is-dragging { cursor: grabbing; }

.mark-text {
  white-space: pre;
  color: #111;
  font-family: "PingFang TC", "Noto Sans TC", -apple-system, sans-serif;
  padding: 0;
  min-width: 1px;
}

/* 打字中：要能選字、要有游標框、要壓在最上層 */
.mark-text.is-editing {
  cursor: text;
  outline: none;
  z-index: 5;
  min-width: 8px;
  user-select: text;          /* .mark 預設 none，會擋住游標與選字 */
  -webkit-user-select: text;
  background: rgba(47, 125, 225, 0.07);
}

.mark-text.is-editing::after {
  border: 1px solid var(--sel) !important;
}

/* class 名稱來自 JS 的 `mark-${kind}`，kind 是 'image' */
.mark-image img {
  display: block;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.mark::after {
  content: "";
  position: absolute;
  inset: -3px;
  border: 1px dashed transparent;
  border-radius: 3px;
  pointer-events: none;
}

.mark:hover::after { border-color: rgba(47,125,225,0.45); }
.mark.is-selected::after { border-color: var(--sel); border-style: solid; }

/* ---------- 浮動工具列 ---------- */

.floating-bar {
  position: fixed;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 2px;
  background: #23231f;
  color: #fff;
  border-radius: 8px;
  padding: 4px;
  box-shadow: 0 4px 14px rgba(0,0,0,0.28);
  font-size: 12px;
}

.floating-bar[hidden] { display: none; }

.fb-group { display: flex; align-items: center; gap: 2px; }
.fb-group[hidden] { display: none; }

.fb-btn {
  font: inherit;
  font-size: 12px;
  background: none;
  border: none;
  color: #fff;
  padding: 5px 9px;
  border-radius: 5px;
  cursor: pointer;
  white-space: nowrap;
}

.fb-btn:hover { background: rgba(255,255,255,0.16); }
.fb-del:hover { background: var(--danger); }

.fb-val {
  min-width: 40px;
  text-align: center;
  color: #c9c9c2;
  font-variant-numeric: tabular-nums;
}

.fb-sep {
  width: 1px;
  height: 16px;
  background: rgba(255,255,255,0.22);
  margin: 0 3px;
}

/* ---------- 頁尾 ---------- */

.site-footer {
  flex: none;
  padding: 7px 14px calc(8px + env(safe-area-inset-bottom, 0px));
  text-align: center;
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--ink-faint);
  background: var(--surface);
  border-top: 1px solid var(--line);
}

.site-footer a {
  color: var(--accent);
  text-decoration: none;
}

.site-footer a:hover { text-decoration: underline; }

.site-footer a:focus-visible {
  border-radius: 3px;
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.site-footer strong { font-weight: 600; color: var(--ink-soft); }
.site-footer .dot { margin: 0 6px; opacity: 0.5; }

/* 視窗矮的時候，頁尾那句廣告詞先讓位給工作區 */
@media (max-height: 620px) {
  .site-footer { display: none; }
}

/* ---------- 提示 ---------- */

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: #23231f;
  color: #fff;
  padding: 10px 18px;
  border-radius: 20px;
  font-size: 13px;
  z-index: 50;
  box-shadow: 0 4px 14px rgba(0,0,0,0.25);
  pointer-events: none;
}

.toast[hidden] { display: none; }

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #191917;
    --surface: #222220;
    --ink: #ececE6;
    --ink-soft: #a5a59d;
    --ink-faint: #7a7a72;
    --line: #33332f;
    --accent: #64b9a1;
    --accent-soft: #26332f;
    --danger: #d97a68;
  }
  .btn:hover:not(:disabled) { background: #2c2c29; }
  .btn-primary { color: #12211c; }
  .btn-primary:hover:not(:disabled) { background: #7fcbb5; }
  .field-row .f-label, .panel-muted, .img-card { background: #1d1d1b; }
  .img-thumb { background: #f7f7f5; }
  .mark-text { color: #111; }
}