/* ===== 工具应用外壳样式 ===== */
:root {
  --color-primary: #0f172a;
  --color-secondary: #334155;
  --color-tertiary: #64748b;
  --color-accent: #315efb;
  --color-bg: #eef3fb;
  --color-surface: #ffffff;
  --color-border: #d6deea;
  --color-light-border: #e6edf7;
  --bg-primary: #ffffff;
  --bg-secondary: #f4f7fd;
  --border-color: #d6deea;
  --primary-color: #315efb;
  --text-primary: #0f172a;
  --text-muted: #64748b;
  --shadow-soft: 0 8px 22px rgba(15, 23, 42, 0.06);
  --shadow-deep: 0 18px 50px rgba(36, 63, 119, 0.16);
  --app-bg: #f0f2f5;
  --panel-bg: #ffffff;
  --panel-border: #e5e7eb;
  --ink: #0f172a;
  --ink-soft: #334155;
  --ink-faint: #64748b;
  --brand: #2563eb;
  --brand-soft: #dbeafe;
  --brand-faint: #f6f9ff;
  --danger: #b84a3e;
  --hair: #e6edf7;
  --chip-bg: #f3f4f6;
  --focus: #2563eb;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", "Segoe UI Mono", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --ui: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", "Source Han Sans CN", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
  font-family: var(--ui);
  color: var(--ink);
  background: var(--app-bg);
  font-size: 15px;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

.app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  background: transparent;
}

/* ===== 顶部工具栏 ===== */
.topbar {
  display: flex;
  align-items: center;
  min-height: 52px;
  padding: 8px 20px;
  background: var(--panel-bg);
  border-bottom: 1px solid var(--panel-border);
  gap: 12px;
  flex-wrap: wrap;
}
.home-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 5px;
  color: #9ca3af;
  text-decoration: none;
  flex: none;
  transition: background 0.15s, color 0.15s;
}
.home-link .ico {
  width: 12px;
  height: 12px;
}
.home-link:hover {
  background: #f3f4f6;
  color: #374151;
}
.topbar .brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 600;
  color: #111;
  letter-spacing: 0.02em;
}
.topbar .brand .dot {
  width: 18px; height: 18px;
  border-radius: 5px;
  background: var(--brand);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 11px;
  font-weight: 700;
  font-family: "Source Serif Pro", Georgia, serif;
}
.topbar .divider {
  width: 1px; height: 22px;
  background: #e5e7eb;
}
.topbar .spacer { flex: 1; }
.topbar .meta {
  color: #9ca3af;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
  background: #f3f4f6;
  padding: 3px 8px;
  border-radius: 4px;
  white-space: nowrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: 6px;
  border: 1px solid #e5e7eb;
  background: #f9fafb;
  color: #374151;
  font-size: 12px;
  font-family: sans-serif;
  cursor: pointer;
  letter-spacing: 0.02em;
  transition: background 0.15s, border-color 0.15s, opacity 0.15s;
  white-space: nowrap;
}
.btn:hover { background: #f3f4f6; border-color: #d1d5db; color: #374151; }
.btn:active { transform: translateY(1px); }
.btn.primary {
  background: #2563eb;
  color: white;
  border-color: #2563eb;
}
.btn.primary:hover { background: #1d4ed8; border-color: #1d4ed8; color: white; }
.btn.ghost { background: transparent; border-color: transparent; }
.btn.ghost:hover { background: #f3f4f6; border-color: transparent; color: #374151; }
.btn .ico { width: 14px; height: 14px; flex-shrink: 0; }

.select-theme {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 6px 4px 12px;
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 6px;
  font-size: 12px;
}
.select-theme select {
  border: none;
  background: transparent;
  font-family: sans-serif;
  font-size: 12px;
  color: #111;
  padding: 4px 4px;
  outline: none;
  cursor: pointer;
}

/* ===== 主区：三栏 ===== */
.main {
  display: grid;
  grid-template-columns: 1fr 420px 340px;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}
@media (max-width: 1400px) {
  .main { grid-template-columns: 1fr 400px 320px; }
}

.pane {
  min-height: 0;
  display: flex;
  flex-direction: column;
  background: #fff;
}
.pane + .pane { border-left: 1px solid #e5e7eb; }

.pane-head {
  box-sizing: border-box;
  height: 48px;
  min-height: 48px;
  max-height: 48px;
  padding: 0 16px;
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  border-bottom: 1px solid #e5e7eb;
  font-size: 11.5px;
  line-height: 1.3;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--ink-faint);
  font-weight: 600;
  flex-shrink: 0;
  overflow: hidden;
}
.pane-head > span:first-child {
  flex-shrink: 0;
}
/* 左侧副标题等：单行省略，避免换行把栏头撑高 */
.pane-head > span:nth-child(2):not(.actions) {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.pane-head .actions {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  gap: 6px;
}
.pane-toggle-btn {
  width: 24px;
  height: 24px;
  border: 1px solid #d6deea;
  border-radius: 6px;
  background: #fff;
  color: #64748b;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  line-height: 1;
  transition: background 0.15s, border-color 0.15s, color 0.15s, transform 0.15s;
}
.pane-toggle-btn:hover {
  background: #f3f4f6;
  border-color: #d1d5db;
  color: #0f172a;
}
.pane-body {
  flex: 1;
  overflow: auto;
  min-height: 0;
}

/* ===== 左：编辑器 ===== */
#editor.editor-dragover {
  outline: 2px dashed var(--brand, #2563eb);
  outline-offset: -2px;
  background: #f8fafc;
}

/* 预览区代码块：统一浅色底（公众号阅读友好；覆盖暗色 pre 预设与 hljs 冲突） */
#preview-content pre {
  background: #f5f7fa !important;
  border: 1px solid #e2e8f0 !important;
  color: #1e293b !important;
  white-space: pre-wrap !important;
  word-break: break-word !important;
  overflow-wrap: anywhere !important;
  overflow-x: hidden !important;
}

/* 预览区内代码高亮（github 主题 token 色叠在浅色底上） */
#preview-content pre code.hljs {
  display: block;
  overflow-x: visible !important;
  white-space: pre-wrap !important;
  word-break: break-word !important;
  overflow-wrap: anywhere !important;
  background: transparent !important;
}

#editor {
  width: 100%;
  height: 100%;
  border: none;
  outline: none;
  padding: 24px;
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-primary);
  background: var(--color-surface);
  resize: none;
  overflow-y: auto;
  overflow-x: hidden;
  tab-size: 2;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.95), 0 8px 20px rgba(39, 64, 121, 0.07);
  transition: border-color 120ms, box-shadow 120ms, background-color 120ms;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
#editor::-webkit-scrollbar { display: none; }
#editor:focus {
  box-shadow: 0 0 0 3px rgba(49, 94, 251, 0.18), 0 14px 30px rgba(49, 94, 251, 0.14);
}

/* ===== 中：预览区 ===== */
.preview-pane { background: #fff; }
.preview-wrap {
  padding: 22px 0 40px;
  display: flex;
  justify-content: center;
}
.preview-frame {
  width: 375px;
  min-height: 500px;
  background: white;
  border-radius: 14px;
  box-shadow:
    0 1px 2px rgba(15, 23, 42, 0.04),
    0 12px 36px rgba(15, 23, 42, 0.08);
  overflow: hidden;
  border: 1px solid rgba(15, 23, 42, 0.06);
}
.preview-phone-bar {
  height: 34px;
  background: #f8fbff;
  border-bottom: 1px solid #e6edf7;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  font-size: 11px;
  color: var(--color-secondary);
  font-variant-numeric: tabular-nums;
}
.preview-phone-bar .dots { display: flex; gap: 4px; }
.preview-phone-bar .dots span {
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--ink-faint);
  opacity: 0.5;
}
.preview-article-meta {
  padding: 18px 20px 14px;
  border-bottom: 1px solid #eef3fb;
}
.preview-article-meta .title-fake {
  font-size: 18px;
  font-weight: 700;
  color: #222;
  margin-bottom: 8px;
  line-height: 1.4;
}
.preview-article-meta .byline {
  font-size: 12px;
  color: #8A8A8A;
  display: flex;
  gap: 8px;
  align-items: center;
}
.preview-article-meta .byline .acct {
  color: #576B95;
}
#preview-scroll-root {
  background: linear-gradient(180deg, #f8fbff 0%, #eef3fb 100%);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
#preview-scroll-root::-webkit-scrollbar { display: none; }
#preview-content {
  padding: 16px 16px 40px;
  font-size: 16px;
}
#preview-content > *:first-child { margin-top: 0 !important; }

/* ===== 右：样式面板 ===== */
.settings-pane { background: #fff; }
.settings-body { padding: 0 0 60px; }
.main.settings-collapsed {
  grid-template-columns: 1fr 420px 52px;
}
.main.settings-collapsed .settings-pane .pane-body {
  display: none;
}
.main.settings-collapsed .settings-pane .pane-head {
  padding: 0 8px;
  height: 48px;
  min-height: 48px;
  max-height: 48px;
  justify-content: center;
}
.main.settings-collapsed .settings-pane .pane-head > span:first-child,
.main.settings-collapsed .settings-pane .actions > span {
  display: none;
}
.main.settings-collapsed .settings-pane .actions {
  width: 100%;
  justify-content: center;
}
.main.settings-collapsed .settings-pane .pane-toggle-btn {
  transform: rotate(180deg);
}

.accordion-item { border-bottom: 1px solid var(--hair); }
.accordion-head {
  width: 100%;
  padding: 13px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: transparent;
  border: none;
  font-family: var(--ui);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
  text-align: left;
}
.accordion-head:hover { background: rgba(49, 94, 251, 0.04); }
.accordion-head .chevron {
  transition: transform 0.2s ease;
  color: var(--ink-faint);
}
.accordion-item.open .chevron { transform: rotate(90deg); }
.accordion-body {
  display: none;
  padding: 4px 16px 16px;
}
.accordion-item.open .accordion-body { display: block; }

/* 样式面板底部：主题管理（无「我的主题」标题行） */
.settings-themes-only {
  padding: 8px 16px 20px;
  border-top: 1px solid var(--hair);
}

.field {
  margin-bottom: 14px;
}
.field:last-child { margin-bottom: 4px; }
.field-label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 11.5px;
  color: var(--ink-soft);
  margin-bottom: 6px;
  font-weight: 500;
}
.field-label .val {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-faint);
}
.field-row {
  display: flex;
  align-items: center;
  gap: 8px;
}
.field-row .seg { flex: 1; }

/* 分段选择器 */
.seg {
  display: flex;
  background: var(--chip-bg);
  border-radius: 6px;
  padding: 2px;
  gap: 2px;
}
.seg button {
  flex: 1;
  padding: 5px 8px;
  border: none;
  background: transparent;
  border-radius: 4px;
  font-size: 11.5px;
  font-family: var(--ui);
  cursor: pointer;
  color: var(--ink-soft);
  transition: all 0.1s;
}
.seg button.active {
  background: white;
  color: var(--ink);
  box-shadow: 0 1px 2px rgba(0,0,0,0.06);
  font-weight: 500;
}

/* Slider */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: var(--hair);
  border-radius: 4px;
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--brand);
  cursor: pointer;
  border: 2px solid white;
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}
input[type="range"]::-moz-range-thumb {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--brand);
  cursor: pointer;
  border: 2px solid white;
}

/* Color picker */
.color-pick {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 3px;
  background: white;
  border: 1px solid var(--panel-border);
  border-radius: 6px;
}
.color-pick input[type="color"] {
  width: 22px; height: 22px;
  border: none;
  padding: 0;
  background: transparent;
  cursor: pointer;
  border-radius: 4px;
}
.color-pick input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
.color-pick input[type="color"]::-webkit-color-swatch {
  border: 1px solid var(--panel-border);
  border-radius: 4px;
}
.color-pick input[type="text"] {
  flex: 1;
  border: none;
  outline: none;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink);
  background: transparent;
  padding: 2px 4px;
  width: 60px;
}

/* 样式预设网格 */
.preset-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 6px;
  margin-top: 4px;
}
.preset-chip {
  border: 1px solid var(--panel-border);
  background: white;
  border-radius: 7px;
  padding: 9px 10px;
  cursor: pointer;
  text-align: left;
  font-family: var(--ui);
  font-size: 11.5px;
  color: var(--ink-soft);
  transition: all 0.12s;
  min-height: 54px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 4px;
  position: relative;
  overflow: hidden;
}
.preset-chip:hover { border-color: var(--brand-soft); }
.preset-chip.active {
  border-color: var(--brand);
  background: var(--brand-faint);
  color: var(--ink);
}
.preset-chip .preview-sample {
  font-size: 12px;
  color: var(--ink);
  pointer-events: none;
}
.preset-chip .preset-name {
  font-size: 10.5px;
  color: var(--ink-faint);
  font-weight: 500;
}
.preset-chip.active .preset-name { color: var(--brand); }

/* 输入框 */
input[type="text"].txt, select.txt {
  width: 100%;
  padding: 6px 10px;
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  background: white;
  font-family: var(--ui);
  font-size: 12.5px;
  color: var(--ink);
  outline: none;
}
input[type="text"].txt:focus, select.txt:focus { border-color: var(--brand); }

/* toast */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--ink);
  color: white;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 13px;
  opacity: 0;
  transition: all 0.25s;
  pointer-events: none;
  z-index: 999;
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* 滚动条 */
.pane-body::-webkit-scrollbar { width: 8px; height: 8px; }
.pane-body::-webkit-scrollbar-track { background: transparent; }
.pane-body::-webkit-scrollbar-thumb {
  background: rgba(107, 93, 79, 0.2);
  border-radius: 4px;
}
.pane-body::-webkit-scrollbar-thumb:hover { background: rgba(107, 93, 79, 0.35); }

/* 模态：命名保存 */
.modal-mask {
  position: fixed;
  inset: 0;
  background: rgba(43, 32, 22, 0.4);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 500;
}
.modal-mask.show { display: flex; }
.modal {
  background: var(--panel-bg);
  border-radius: 12px;
  padding: 22px 24px;
  width: 360px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.25);
}
.modal h3 { margin: 0 0 12px; font-size: 15px; }
.modal p { margin: 0 0 16px; font-size: 12.5px; color: var(--ink-soft); }
.modal .actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; }

/* 自定义主题管理列表 */
.theme-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 8px;
}
.theme-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 10px;
  background: white;
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  font-size: 12px;
}
.theme-list-item .name { color: var(--ink); }
.theme-list-item .controls { display: flex; gap: 4px; }
.theme-list-item button {
  border: none;
  background: transparent;
  color: var(--ink-faint);
  cursor: pointer;
  padding: 3px 6px;
  border-radius: 4px;
  font-size: 11px;
}
.theme-list-item button:hover { background: var(--chip-bg); color: var(--ink); }
.theme-list-item button.del:hover { color: var(--danger); }