/* 七弦 Qixian Web - 主题与布局 */
@font-face {
  font-family: 'JianZiPu';
  src: url('fonts/JianZiPu.ttf') format('truetype');
  font-display: swap;
}

:root {
  --bg: #ffffff;
  --fg: #1a1a1a;
  --window-bg: #f5f5f5;
  --window-fg: #1a1a1a;
  --toolbar-bg: #f0f0f0;
  --border: #d0d0d0;
  --button-bg: #fafafa;
  --button-hover: #e8e8e8;
  --button-pressed: #d4d4d4;
  --selection-bg: #b5d5ff;
  --selection-fg: #1a1a1a;
  --line-number-bg: #f5f5f5;
  --line-number-fg: #999;
  --line-number-current: #1a1a1a;
  --current-line: #f0f4fa;
  --dim-fg: #b8b8b8;
  --missing-underline: #e07a1f;
  --find-all: #fff3a8;
  --find-current: #ffb347;
  --link: #1f6fb5;
  --primary: #1f6fb5;
  --primary-fg: #ffffff;
  --error: #d04444;
  --error-bg: #fdecec;
  --status-fg: #555;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

[data-theme='dark'] {
  --bg: #1e1e1e;
  --fg: #e0e0e0;
  --window-bg: #2b2b2b;
  --window-fg: #e0e0e0;
  --toolbar-bg: #2d2d2d;
  --border: #3a3a3a;
  --button-bg: #3a3a3a;
  --button-hover: #4a4a4a;
  --button-pressed: #555;
  --selection-bg: #264f78;
  --selection-fg: #ffffff;
  --line-number-bg: #252525;
  --line-number-fg: #808080;
  --line-number-current: #e0e0e0;
  --current-line: #2a2d34;
  --dim-fg: #5a5a5a;
  --missing-underline: #ffa94d;
  --find-all: #5c5419;
  --find-current: #a6791c;
  --link: #5bb5ff;
  --primary: #1f6fb5;
  --primary-fg: #ffffff;
  --error: #ff8a8a;
  --error-bg: #3a1f1f;
  --status-fg: #b0b0b0;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; padding: 0; overflow: hidden; }
body {
  font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--window-bg);
  color: var(--window-fg);
  display: grid;
  grid-template-rows: auto 1fr auto;
  height: 100vh;
}

a { color: var(--link); }
button {
  font: inherit;
  background: var(--button-bg);
  color: var(--window-fg);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 3px;
  cursor: pointer;
}
button:hover { background: var(--button-hover); }
button:active { background: var(--button-pressed); }
button:disabled { opacity: 0.5; cursor: default; }
button.primary { background: var(--primary); color: var(--primary-fg); border-color: var(--primary); }
button.primary:hover { filter: brightness(1.1); }
button.toggle.active { background: var(--primary); color: var(--primary-fg); border-color: var(--primary); }

input[type='text'], input[type='number'], select {
  font: inherit;
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--border);
  padding: 3px 6px;
  border-radius: 3px;
}
select { padding: 3px 4px; }

/* 标题栏 / 菜单栏 */
#menubar {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--toolbar-bg);
  border-bottom: 1px solid var(--border);
  padding: 4px 10px;
  user-select: none;
}
.brand { display: flex; align-items: center; gap: 6px; padding-right: 8px; }
.brand-logo { width: 24px; height: 24px; }
.brand-name { font-weight: 600; font-size: 14px; }
.menus { display: flex; gap: 0; }
.menu-btn {
  background: transparent;
  border: 0;
  padding: 4px 10px;
  border-radius: 3px;
  color: var(--window-fg);
}
.menu-btn:hover { background: var(--button-hover); }
.menu-btn.active { background: var(--button-hover); }
.menu-spacer { flex: 1; }
.header-right { display: flex; gap: 6px; }

/* 弹出菜单 */
.menu-popup {
  position: fixed;
  background: var(--window-bg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  border-radius: 4px;
  padding: 4px 0;
  min-width: 200px;
  z-index: 100;
}
.menu-popup .menu-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 14px;
  cursor: pointer;
  white-space: nowrap;
}
.menu-popup .menu-item:hover { background: var(--selection-bg); color: var(--selection-fg); }
.menu-popup .menu-item.disabled { opacity: 0.5; cursor: default; pointer-events: none; }
.menu-popup .shortcut { color: var(--status-fg); margin-left: 24px; font-size: 11px; }
.menu-popup .menu-item:hover .shortcut { color: inherit; }
.menu-popup .menu-sep { height: 1px; background: var(--border); margin: 4px 0; }
.menu-popup .menu-item .check { width: 14px; display: inline-block; }
.menu-popup .submenu {
  position: relative;
}
.menu-popup .submenu::after { content: '▸'; position: absolute; right: 8px; top: 50%; transform: translateY(-50%); }

/* 主区域 */
#main {
  display: grid;
  grid-template-columns: 1fr 4px 1fr;
  min-height: 0;
  background: var(--window-bg);
}
.pane {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  background: var(--bg);
}
#splitter {
  background: var(--border);
  cursor: col-resize;
}
#splitter:hover { background: var(--primary); }

/* 编辑器 */
#editor-host {
  flex: 1;
  display: flex;
  min-height: 0;
}
.CodeMirror {
  flex: 1;
  height: 100%;
  font-family: 'Cascadia Mono', 'Consolas', 'Menlo', monospace;
  font-size: 14px;
  line-height: 1.5;
  background: var(--bg);
  color: var(--fg);
}
.CodeMirror-gutters {
  background: var(--line-number-bg);
  border-right: 1px solid var(--border);
}
.CodeMirror-linenumber {
  color: var(--line-number-fg);
  padding: 0 6px 0 4px;
  min-width: 24px;
  text-align: right;
}
.CodeMirror-activeline-gutter .CodeMirror-linenumber { color: var(--line-number-current); }
.CodeMirror-activeline-background { background: var(--current-line); }
.CodeMirror-cursor { border-left-color: var(--fg); }
.CodeMirror-selected { background: var(--selection-bg) !important; }
.CodeMirror-focused .CodeMirror-selected { background: var(--selection-bg) !important; }

/* 高亮：减字暗化 / 简谱暗化 / 待补减字 */
.cm-qx-dim { color: var(--dim-fg); }
.cm-qx-missing {
  color: var(--dim-fg);
  text-decoration: underline wavy var(--missing-underline);
  text-underline-offset: 3px;
}
.cm-qx-find-all {
  background: var(--find-all);
  color: var(--fg);
}
.cm-qx-find-current {
  background: var(--find-current);
  color: var(--fg);
}

/* 查找栏 */
.find-bar {
  background: var(--toolbar-bg);
  border-bottom: 1px solid var(--border);
  padding: 4px 8px;
}
.find-row {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 2px 0;
}
.find-row input[type='text'] {
  flex: 1;
  min-width: 100px;
}
.find-row input.error {
  outline: 1px solid var(--error);
  color: var(--error);
}
.match-status {
  color: var(--status-fg);
  font-size: 12px;
  min-width: 64px;
  text-align: center;
}

/* 预览 */
#preview-toolbar {
  background: var(--toolbar-bg);
  border-bottom: 1px solid var(--border);
  padding: 4px 8px;
  display: flex;
  gap: 6px;
  align-items: center;
}
#preview-toolbar .sep { width: 1px; height: 20px; background: var(--border); margin: 0 4px; }
#preview-toolbar .grow { flex: 1; }
#page-input {
  width: 44px;
  text-align: center;
}
#preview-host {
  flex: 1;
  overflow: auto;
  background: #888;
  display: block;
  text-align: center;
  padding: 12px;
  min-height: 0;
}
#preview-canvases {
  display: inline-flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}
.pdf-page-canvas {
  background: white;
  box-shadow: 0 2px 12px rgba(0,0,0,0.4);
  display: block;
}
[data-theme='dark'] #preview-host { background: #1a1a1a; }

.render-error {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--error-bg);
  color: var(--error);
  border: 1px solid var(--error);
  padding: 8px 16px;
  max-width: 80%;
  max-height: 40vh;
  overflow: auto;
  white-space: pre-wrap;
  font-family: monospace;
  font-size: 12px;
  border-radius: 4px;
  box-shadow: var(--shadow);
  z-index: 50;
}

/* 状态栏 */
#statusbar {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--toolbar-bg);
  border-top: 1px solid var(--border);
  padding: 4px 10px;
  font-size: 12px;
  color: var(--status-fg);
}
#statusbar .vsep {
  width: 1px;
  height: 14px;
  background: var(--border);
}
#statusbar .grow { flex: 1; }

/* 模态框 */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal[hidden] { display: none; }
.modal-card {
  background: var(--window-bg);
  color: var(--window-fg);
  border-radius: 6px;
  box-shadow: var(--shadow);
  min-width: 460px;
  max-width: 90vw;
  max-height: 90vh;
  overflow: auto;
  border: 1px solid var(--border);
}
.modal-card.small { min-width: 360px; }
.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
}
.modal-head h2 { margin: 0; font-size: 16px; }
.modal-close { background: transparent; border: 0; font-size: 16px; }
.modal-foot {
  display: flex;
  gap: 8px;
  padding: 10px 16px;
  border-top: 1px solid var(--border);
  align-items: center;
}
.modal-foot .grow { flex: 1; }

.tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  padding: 0 8px;
}
.tabs .tab {
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  padding: 8px 14px;
  border-radius: 0;
}
.tabs .tab.active {
  border-bottom-color: var(--primary);
  color: var(--primary);
}
.tab-pane {
  padding: 16px 20px;
  display: none;
}
.tab-pane.active { display: block; }

.form-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 8px 0;
}
.form-row label { min-width: 130px; text-align: right; }
.form-row input[type='number'] { width: 80px; }
.form-row input[type='checkbox'] { margin-right: 4px; }
.hint { color: var(--status-fg); font-size: 12px; margin-top: 16px; }

.about-card { min-width: 460px; }
.about-body { display: flex; gap: 16px; padding: 16px 20px; align-items: flex-start; }
.about-logo { width: 96px; height: 96px; }
.about-body h3 { margin: 0 0 4px 0; }
.about-body p { margin: 6px 0; }
.muted { color: var(--status-fg); }
.small { font-size: 12px; }

.confirm-body { padding: 16px 20px; min-height: 40px; }