/* ============================================================
   墨迹提取大师 v2.2 - 样式表 (从HTML拆分)
   CSP兼容性改造：内联样式分离为外部文件
   ============================================================ */

:root{
  --primary:#c8552a;
  --primary-dark:#a8431f;
  --primary-light:#e0744a;
  --bg:#f5f1ea;
  --paper:#faf7f2;
  --ink:#1a1612;
  --ink-soft:#3d3530;
  --muted:#8a807a;
  --line:#d9d1c5;
  --card:#fffefb;
  --success:#10b981;
  --warning:#f59e0b;
  --shadow:0 2px 8px rgba(26,22,18,.08),0 8px 24px rgba(26,22,18,.06);
  --shadow-lg:0 4px 16px rgba(26,22,18,.12),0 16px 48px rgba(26,22,18,.08);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;overflow:hidden}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:14px;
  line-height:1.5;
  user-select:none;
  -webkit-font-smoothing:antialiased;
}
.app{
  display:grid;
  grid-template-rows:56px 36px 1fr 72px;
  height:100vh;
}

/* ===== 顶部栏 ===== */
.topbar{
  display:flex;
  align-items:center;
  padding:0 20px;
  background:linear-gradient(180deg,var(--card),var(--paper));
  border-bottom:1px solid var(--line);
  box-shadow:var(--shadow);
  z-index:10;
  gap:14px;
}
.brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:600}
.brand-seal{
  width:34px;height:34px;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  border-radius:7px;
  display:grid;place-items:center;
  color:#fff;font-weight:700;font-family:"STKaiti","KaiTi",serif;
  box-shadow:0 2px 6px rgba(168,67,31,.3);
  transform:rotate(-3deg);
  font-size:18px;
}
.brand small{font-size:12px;color:var(--muted);font-weight:400;margin-left:4px}
.topbar-spacer{flex:1}
.btn{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 14px;
  border:1px solid var(--line);
  background:var(--card);
  color:var(--ink-soft);
  border-radius:6px;
  font-size:13px;cursor:pointer;
  transition:all .12s cubic-bezier(.4,0,.2,1);
  font-family:inherit;
  position:relative;
  overflow:hidden;
}
.btn:hover{background:var(--paper);border-color:var(--primary-light);color:var(--primary);transform:translateY(-1px)}
.btn:active{transform:translateY(0) scale(.97)}
.btn.primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn.primary:hover{background:var(--primary-dark);border-color:var(--primary-dark)}
.btn.ghost{background:transparent}
.btn.outline-accent{
  background:transparent;color:#10b981;border:1.5px solid #10b981;
  font-weight:600;
}
.btn.outline-accent:hover{
  background:#10b981;color:#fff;border-color:#10b981;
  transform:translateY(-1px);box-shadow:0 2px 8px rgba(16,185,129,.3);
}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none!important}
.btn-group{display:flex;gap:6px}

/* ===== 当前工具提示横幅 ===== */
.tool-banner{
  background:linear-gradient(90deg,var(--primary),var(--primary-light));
  color:#fff;
  display:flex;align-items:center;gap:12px;
  padding:0 20px;
  font-size:13px;
  box-shadow:0 2px 4px rgba(168,67,31,.2);
  transition:all .2s;
}
.tool-banner-icon{
  width:24px;height:24px;border-radius:4px;
  background:rgba(255,255,255,.2);
  display:grid;place-items:center;
  font-size:14px;
}
.tool-banner-text{flex:1}
.tool-banner-text strong{font-weight:600;margin-right:6px}
.tool-banner-hint{font-size:11px;opacity:0.85}
.tool-banner-close{
  background:rgba(255,255,255,.15);border:none;color:#fff;
  width:22px;height:22px;border-radius:4px;cursor:pointer;
  display:grid;place-items:center;font-size:14px;
}
.tool-banner-close:hover{background:rgba(255,255,255,.25)}

/* ===== 主体 ===== */
.main{
  display:grid;
  grid-template-columns:68px 1fr 300px;
  overflow:hidden;
}

/* ===== 左侧工具栏 ===== */
.toolbar{
  background:var(--paper);
  border-right:1px solid var(--line);
  padding:10px 0;
  display:flex;flex-direction:column;align-items:center;gap:4px;
  overflow-y:auto;
}
.tool{
  width:52px;height:52px;
  display:grid;place-items:center;
  border-radius:10px;
  cursor:pointer;
  color:var(--ink-soft);
  position:relative;
  transition:all .12s cubic-bezier(.4,0,.2,1);
  border:1px solid transparent;
}
.tool:hover{background:rgba(200,85,42,.08);color:var(--primary);border-color:rgba(200,85,42,.2);transform:scale(1.05)}
.tool:active{transform:scale(.92)}
.tool.active{
  background:var(--primary);color:#fff;
  border-color:var(--primary-dark);
  box-shadow:0 3px 8px rgba(200,85,42,.3),inset 0 1px 0 rgba(255,255,255,.2);
}
.tool.active::before{
  content:'';position:absolute;left:-6px;top:50%;transform:translateY(-50%);
  width:4px;height:24px;background:var(--primary-dark);border-radius:0 3px 3px 0;
}
.tool svg{width:24px;height:24px}
.tool-label{
  position:absolute;left:62px;top:50%;transform:translateY(-50%) translateX(-8px);
  background:var(--ink);color:#fff;padding:5px 10px;border-radius:6px;
  font-size:12px;white-space:nowrap;
  opacity:0;pointer-events:none;transition:all .15s;
  z-index:100;
}
.tool-label::before{
  content:'';position:absolute;left:-4px;top:50%;transform:translateY(-50%) rotate(45deg);
  width:8px;height:8px;background:var(--ink);
}
.tool:hover .tool-label{opacity:1;transform:translateY(-50%) translateX(0)}
.tool-divider{width:36px;height:1px;background:var(--line);margin:6px 0}

/* ===== 中央画布 ===== */
.canvas-area{
  background:
    linear-gradient(45deg,#e8e2d6 25%,transparent 25%),
    linear-gradient(-45deg,#e8e2d6 25%,transparent 25%),
    linear-gradient(45deg,transparent 75%,#e8e2d6 75%),
    linear-gradient(-45deg,transparent 75%,#e8e2d6 75%);
  background-size:20px 20px;
  background-position:0 0,0 10px,10px -10px,-10px 0;
  background-color:#ddd5c5;
  overflow:auto;
  display:flex;align-items:center;justify-content:center;
  position:relative;
}
.canvas-wrap{
  position:relative;
  box-shadow:var(--shadow-lg);
  background:#fff;
  display:inline-block;
}
.canvas-wrap.flash::after{
  content:'';position:absolute;inset:0;
  background:rgba(200,85,42,.3);
  pointer-events:none;
  animation:flash .5s ease-out;
}
@keyframes flash{from{opacity:1}to{opacity:0}}
#mainCanvas{display:block;cursor:crosshair}
#overlayCanvas{position:absolute;left:0;top:0;pointer-events:none}
.canvas-wrap.tool-frame #mainCanvas{cursor:crosshair}
.canvas-wrap.tool-erase #mainCanvas,
.canvas-wrap.tool-restore #mainCanvas,
.canvas-wrap.tool-repair #mainCanvas{cursor:none}
/** 确保操作时圆圈光标覆盖canvas原生光标 */
.canvas-wrap.tool-erase.no-native-cursor #mainCanvas,
.canvas-wrap.tool-restore.no-native-cursor #mainCanvas{cursor:none}

.empty-hint{
  position:absolute;inset:0;
  display:grid;place-items:center;
  color:var(--muted);
  pointer-events:none;text-align:center;
}
.empty-hint-inner{
  background:rgba(255,254,251,.95);
  padding:36px 48px;
  border-radius:14px;
  border:1px dashed var(--line);
  box-shadow:var(--shadow);
}
.empty-hint h2{font-size:22px;color:var(--ink);margin-bottom:12px;font-weight:600}
.empty-hint p{font-size:13px;color:var(--ink-soft);margin-bottom:6px}
.empty-hint .actions{margin-top:20px;display:flex;gap:8px;justify-content:center}
.empty-hint kbd{
  background:var(--card);border:1px solid var(--line);
  border-bottom-width:2px;border-radius:4px;
  padding:2px 8px;font-family:inherit;font-size:12px;color:var(--ink);
}

/* ===== 右侧参数面板 ===== */
.panel{
  background:var(--paper);
  border-left:1px solid var(--line);
  overflow-y:auto;
}
.panel-section{
  padding:14px 16px;
  border-bottom:1px solid var(--line);
  animation:slideIn .25s ease;
}
@keyframes slideIn{from{opacity:0;transform:translateX(10px)}to{opacity:1;transform:translateX(0)}}
.panel-title{
  font-size:11px;font-weight:700;
  color:var(--muted);
  text-transform:uppercase;letter-spacing:1.2px;
  margin-bottom:12px;
  display:flex;align-items:center;justify-content:space-between;
}
.panel-title .badge{
  font-size:10px;padding:2px 7px;
  background:var(--primary);color:#fff;
  border-radius:10px;letter-spacing:0;
  font-weight:600;
}
.field{margin-bottom:12px}
.field-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}
.field-label{font-size:12px;color:var(--ink-soft);font-weight:500}
.field-value{font-size:11px;color:var(--muted);font-variant-numeric:tabular-nums;background:var(--card);padding:1px 6px;border-radius:3px;border:1px solid var(--line)}
input[type=range]{
  width:100%;
  -webkit-appearance:none;background:transparent;
  cursor:pointer;
}
input[type=range]::-webkit-slider-runnable-track{
  height:4px;background:var(--line);border-radius:2px;
}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;width:16px;height:16px;
  background:var(--primary);border-radius:50%;
  margin-top:-6px;cursor:pointer;
  border:2px solid #fff;box-shadow:0 1px 4px rgba(200,85,42,.4);
  transition:transform .1s;
}
input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.15)}
input[type=range]::-moz-range-track{height:4px;background:var(--line);border-radius:2px}
input[type=range]::-moz-range-thumb{
  width:16px;height:16px;background:var(--primary);
  border-radius:50%;cursor:pointer;border:2px solid #fff;
  box-shadow:0 1px 4px rgba(200,85,42,.4);
}
.switch{position:relative;display:inline-block;width:36px;height:20px}
.switch input{opacity:0;width:0;height:0}
.slider-sw{
  position:absolute;cursor:pointer;inset:0;
  background:var(--line);border-radius:20px;transition:.2s;
}
.slider-sw:before{
  position:absolute;content:"";height:16px;width:16px;
  left:2px;top:2px;background:#fff;border-radius:50%;transition:.2s;
  box-shadow:0 1px 2px rgba(0,0,0,.2);
}
.switch input:checked + .slider-sw{background:var(--primary)}
.switch input:checked + .slider-sw:before{transform:translateX(16px)}
.checkbox-row{
  display:flex;align-items:center;gap:8px;
  padding:6px 0;cursor:pointer;
  font-size:13px;
}
.checkbox-row input{accent-color:var(--primary);width:14px;height:14px;cursor:pointer}
.preset-row{
  display:flex;gap:4px;
}
.preset-btn{
  flex:1;
  padding:7px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:6px;
  font-size:12px;
  cursor:pointer;
  transition:all .12s;
  font-family:inherit;
  color:var(--ink-soft);
}
.preset-btn:hover{border-color:var(--primary-light);color:var(--primary);transform:translateY(-1px)}
.preset-btn.active{
  background:var(--primary);color:#fff;border-color:var(--primary);
  box-shadow:0 2px 4px rgba(200,85,42,.3);
}
.action-btn{
  width:100%;padding:9px;
  background:var(--primary);color:#fff;
  border:none;border-radius:6px;
  font-size:13px;cursor:pointer;font-weight:500;
  font-family:inherit;
  transition:all .12s;
  display:flex;align-items:center;justify-content:center;gap:6px;
}
.action-btn:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 3px 8px rgba(200,85,42,.3)}
.action-btn:active{transform:translateY(0) scale(.98)}
.action-btn:disabled{background:var(--line);color:var(--muted);cursor:not-allowed;transform:none!important;box-shadow:none}
.action-btn.secondary{background:var(--card);color:var(--ink-soft);border:1px solid var(--line)}
.action-btn.secondary:hover{background:var(--paper);color:var(--primary);border-color:var(--primary-light);box-shadow:none}
.action-btn + .action-btn{margin-top:6px}
.action-btn .kbd-hint{margin-left:auto;font-size:11px;opacity:.7;background:rgba(0,0,0,.1);padding:1px 6px;border-radius:3px}
.action-btn.secondary .kbd-hint{background:var(--paper);color:var(--muted)}

/* 修复预设网格 */
.repair-presets{
  display:grid;grid-template-columns:1fr 1fr;gap:6px;
  margin-bottom:10px;
}
.repair-preset{
  padding:10px 6px;background:var(--card);
  border:1.5px solid var(--line);border-radius:8px;
  cursor:pointer;text-align:center;
  font-size:12px;transition:all .12s;
  color:var(--ink-soft);
  position:relative;
  overflow:hidden;
}
.repair-preset:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px);box-shadow:var(--shadow)}
.repair-preset.active{
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  color:#fff;border-color:var(--primary);
  box-shadow:0 3px 8px rgba(200,85,42,.3);
}
.repair-preset .icon{font-size:22px;display:block;margin-bottom:4px}
.repair-preset small{display:block;font-size:10px;opacity:.75;margin-top:2px}

/* 框选信息 */
.frame-info{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:6px;
  padding:10px;
  margin-bottom:10px;
  font-size:12px;
}
.frame-info-row{display:flex;justify-content:space-between;padding:2px 0}
.frame-info-row strong{color:var(--ink-soft)}

/* ===== 底部背景栏 ===== */
.bottombar{
  background:var(--card);
  border-top:1px solid var(--line);
  padding:0 16px;
  display:flex;align-items:center;gap:10px;
  box-shadow:0 -2px 6px rgba(26,22,18,.04);
  z-index:5;
  overflow-x:auto;
}
.bg-group{
  display:flex;align-items:center;gap:6px;
  padding:0 12px;border-right:1px solid var(--line);
  height:72px;
  flex-shrink:0;
}
.bg-group:last-child{border-right:none;margin-left:auto}
.bg-label{font-size:11px;color:var(--muted);margin-right:4px;font-weight:600;text-transform:uppercase;letter-spacing:.5px}
.bg-preset{
  width:40px;height:40px;border-radius:7px;
  border:2px solid var(--line);cursor:pointer;
  transition:all .12s;
  flex-shrink:0;
}
.bg-preset:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--primary-light)}
.bg-preset.active{border-color:var(--primary);box-shadow:0 0 0 2px rgba(200,85,42,.25),var(--shadow)}
.bg-preset.transparent{
  background:
    linear-gradient(45deg,#ddd 25%,transparent 25%),
    linear-gradient(-45deg,#ddd 25%,transparent 25%),
    linear-gradient(45deg,transparent 75%,#ddd 75%),
    linear-gradient(-45deg,transparent 75%,#ddd 75%);
  background-size:12px 12px;
  background-position:0 0,0 6px,6px -6px,-6px 0;
  background-color:#fff;
}
.bg-preset.solid{background:#fff}
.bg-preset.solid.dark{background:#1a1612}
.bg-preset.solid.beige{background:#f5f1ea}
.bg-preset.gradient1{background:linear-gradient(135deg,#fff5e6,#ffd9b3)}
.bg-preset.gradient2{background:linear-gradient(135deg,#e6f3ff,#b3d9ff)}
.bg-preset.gradient3{background:linear-gradient(135deg,#f0e6ff,#d9b3ff)}
.bg-preset.pattern1{background:repeating-linear-gradient(45deg,#faf7f2,#faf7f2 8px,#e8e2d6 8px,#e8e2d6 9px)}
.bg-preset.pattern2{background:repeating-linear-gradient(0deg,#faf7f2,#faf7f2 14px,#e8e2d6 14px,#e8e2d6 15px)}

/* ===== 笔刷光标 ===== */
.brush-cursor{
  position:fixed;
  border:2.5px solid var(--primary);
  border-radius:50%;
  pointer-events:none;
  z-index:99999;
  display:none;
  box-shadow:0 0 0 2px rgba(200,85,42,.25),inset 0 0 6px rgba(200,85,42,.15);
  background:rgba(200,85,42,.08);
  will-change:left,top,width,height;
  /* 取消过渡以确保光标即时跟随 */
  transition:width .06s,height .06s;
}
.brush-cursor::after{
  content:'';
  position:absolute;
  top:50%;left:50%;
  width:4px;height:4px;
  background:var(--primary);
  border-radius:50%;
  transform:translate(-50%,-50%);
}
.brush-cursor.erase{
  border-color:#ef4444;
  border-style:solid;
  background:rgba(239,68,68,.1);
  box-shadow:0 0 0 2px rgba(239,68,68,.3),inset 0 0 6px rgba(239,68,68,.18);
}
.brush-cursor.erase::after{background:#ef4444}
.brush-cursor.restore{
  border-color:var(--success);
  background:rgba(22,163,74,.08);
  box-shadow:0 0 0 2px rgba(22,163,74,.25),inset 0 0 6px rgba(22,163,74,.12);
}
.brush-cursor.restore::after{background:var(--success)}
.brush-cursor.repair{
  border-color:#3b82f6;border-style:solid;
  background:rgba(59,130,246,.08);
  box-shadow:0 0 0 2px rgba(59,130,246,.25),inset 0 0 6px rgba(59,130,246,.12);
}
.brush-cursor.repair::after{background:#3b82f6}

/* ===== 框选操作扩展按钮 ===== */
.action-btn.small{padding:7px 10px;font-size:12px;border-radius:6px}
.action-btn.accent{border:1.5px solid #3b82f6;color:#3b82f6;background:rgba(59,130,246,.06)}
.action-btn.accent:hover{background:#3b82f6;color:#fff;border-color:#3b82f6}
.action-btn.danger{border:1.5px solid #ef4444;color:#ef4444;background:rgba(239,68,68,.06)}
.action-btn.danger:hover{background:#ef4444;color:#fff;border-color:#ef4444}
.btn-row-2{display:flex;gap:6px;margin-bottom:4px}
.btn-row-2 .action-btn{flex:1}
.section-subtitle{font-size:11px;font-weight:700;color:var(--text);margin:12px 0 6px;padding-top:8px;border-top:1px solid var(--border);text-transform:uppercase;letter-spacing:.5px}
.canvas-wrap.tool-move #mainCanvas{cursor:move}
/* 移动按钮专属样式 */
.move-btn-all{
  width:100%;padding:10px;font-size:13px;
  background:linear-gradient(135deg,#667eea,#764ba2);
  color:#fff;border:none;border-radius:8px;
  cursor:pointer;display:flex;align-items:center;gap:6px;
  transition:all .2s;margin-bottom:2px;
}
.move-btn-all:hover{transform:translateY(-1px);box-shadow:0 4px 12px rgba(102,126,234,.4)}
.move-btn-all:active{transform:scale(.97)}
.move-btn-all .move-btn-icon{font-size:14px;letter-spacing:-2px}
.move-btn-all .move-btn-desc{font-size:10px;opacity:.8;margin-left:auto}
.move-btn-in,.move-btn-out{
  display:flex;flex-direction:column;align-items:center;gap:1px;
  padding:9px 6px;text-align:center;
  border-radius:8px;cursor:pointer;transition:all .15s;
  font-size:12px;
}
.move-btn-in{
  background:rgba(59,130,246,.08);color:#2563eb;border:1.5px solid rgba(59,130,246,.25);
}
.move-btn-in:hover{background:#3b82f6;color:#fff;border-color:#3b82f6;transform:translateY(-1px);box-shadow:0 3px 8px rgba(59,130,246,.3)}
.move-btn-out{
  background:rgba(16,185,129,.08);color:#059669;border:1.5px solid rgba(16,185,129,.25);
}
.move-btn-out:hover{background:#10b981;color:#fff;border-color:#10b981;transform:translateY(-1px);box-shadow:0 3px 8px rgba(16,185,129,.3)}
.move-btn-in:active,.move-btn-out:active{transform:scale(.96)}

/* 移动悬浮指示器 */
.move-indicator{
  position:fixed;pointer-events:none;z-index:99998;
  display:none;align-items:center;justify-content:center;
  font-size:11px;color:var(--primary);font-weight:700;
  background:rgba(200,85,42,.12);border:1.5px dashed var(--primary);
  border-radius:4px;padding:2px 8px;white-space:nowrap;
}

/* ===== 模态框 ===== */
.modal-backdrop{
  position:fixed;inset:0;
  background:rgba(26,22,18,.55);
  display:none;align-items:center;justify-content:center;
  z-index:1000;
  animation:fadeIn .2s;
  backdrop-filter:blur(4px);
}
.modal-backdrop.show{display:flex}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.modal{
  background:var(--card);
  border-radius:14px;
  max-width:600px;width:92%;
  max-height:85vh;overflow-y:auto;
  box-shadow:var(--shadow-lg);
  animation:slideUp .25s;
}
@keyframes slideUp{from{transform:translateY(20px) scale(.96);opacity:0}to{transform:translateY(0) scale(1);opacity:1}}
.modal-header{
  padding:18px 24px;
  border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
}
.modal-title{font-size:18px;font-weight:600}
.modal-close{
  width:30px;height:30px;border-radius:6px;
  border:none;background:transparent;cursor:pointer;
  display:grid;place-items:center;color:var(--muted);
  transition:all .12s;
}
.modal-close:hover{background:var(--paper);color:var(--ink)}
.modal-body{padding:20px 24px}
.modal-footer{padding:14px 24px;border-top:1px solid var(--line);display:flex;justify-content:flex-end;gap:8px}
.help-section{margin-bottom:18px}
.help-section h3{font-size:14px;color:var(--primary);margin-bottom:8px;font-weight:600}
.help-section ol{padding-left:20px;color:var(--ink-soft);font-size:13px;line-height:1.8}
.help-section li strong{color:var(--ink);font-weight:600}

/* ===== Toast ===== */
.toast{
  position:fixed;top:80px;left:50%;
  transform:translateX(-50%) translateY(-20px);
  background:var(--ink);color:#fff;
  padding:11px 22px;border-radius:8px;
  font-size:13px;
  opacity:0;transition:all .25s cubic-bezier(.4,0,.2,1);
  z-index:2000;
  pointer-events:none;
  box-shadow:var(--shadow-lg);
  display:flex;align-items:center;gap:8px;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.success{background:var(--success)}
.toast.warning{background:var(--warning)}
.toast.error{background:#ef4444}

/* ===== 进度条 ===== */
.progress-overlay{
  position:fixed;inset:0;
  background:rgba(26,22,18,.6);
  display:none;align-items:center;justify-content:center;
  z-index:3000;
  backdrop-filter:blur(2px);
}
.progress-overlay.show{display:flex}
.progress-box{
  background:var(--card);
  padding:24px 32px;
  border-radius:12px;
  box-shadow:var(--shadow-lg);
  min-width:300px;
  text-align:center;
}
.progress-text{font-size:14px;color:var(--ink-soft);margin-bottom:12px}
.progress-bar{
  height:6px;background:var(--line);border-radius:3px;overflow:hidden;
  position:relative;
}
.progress-fill{
  height:100%;
  background:linear-gradient(90deg,var(--primary),var(--primary-light));
  border-radius:3px;
  transition:width .2s;
  position:relative;
}
.progress-fill::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent);
  animation:shimmer 1.5s infinite;
}
@keyframes shimmer{from{transform:translateX(-100%)}to{transform:translateX(100%)}}

/* ===== 状态栏 ===== */
.status-info{
  font-size:11px;color:var(--muted);
  display:flex;align-items:center;gap:10px;
  padding:6px 12px;
  background:var(--card);
  border-radius:14px;
  border:1px solid var(--line);
}
.status-dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--success);
  box-shadow:0 0 0 3px rgba(16,185,129,.2);
  animation:pulse 2s infinite;
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}

/* 滚动条 */
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--line);border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:var(--muted)}

/* 缩放控件浮动条 */
.zoom-bar{
  position:absolute;bottom:20px;left:50%;transform:translateX(-50%);
  display:flex;align-items:center;gap:2px;
  background:rgba(255,255,255,.95);
  backdrop-filter:blur(8px);
  border:1px solid var(--border);
  border-radius:24px;
  padding:4px 8px;
  box-shadow:0 2px 12px rgba(0,0,0,.1);
  z-index:50;
  user-select:none;
}
.zoom-bar button{
  width:32px;height:32px;border:none;border-radius:50%;
  background:transparent;
  color:var(--ink-soft);
  font-size:18px;font-weight:700;
  cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:all .15s;line-height:1;
}
.zoom-bar button:hover{background:var(--bg);color:var(--primary)}
.zoom-bar button:active{transform:scale(.92)}
.zoom-bar .zoom-level{
  min-width:52px;text-align:center;
  font-size:12px;font-weight:700;color:var(--ink-soft);
  cursor:pointer;
  padding:2px 4px;border-radius:4px;
  transition:all .15s;
}
.zoom-bar .zoom-level:hover{background:var(--bg);color:var(--primary)}
.zoom-bar .zoom-div{width:1px;height:18px;background:var(--line);margin:0 4px}


/* 框选调整手柄 */
.frame-handle{
  position:absolute;
  width:10px;height:10px;
  background:#fff;
  border:2px solid var(--primary);
  border-radius:2px;
}
/* 尺寸预设 */
.size-presets{display:flex;gap:6px;margin-bottom:8px}
.size-presets button{flex:1;padding:5px 0;border:1.5px solid var(--border);border-radius:6px;background:#fff;color:var(--text);font-size:12px;cursor:pointer;font-weight:600;transition:all .15s}
.size-presets button:hover{background:var(--bg);border-color:var(--primary)}
.size-presets button.active{background:var(--primary);color:#fff;border-color:var(--primary)}
/* 还原模式切换 */
.restore-mode-row{display:flex;gap:6px;margin-top:8px;flex-wrap:wrap}
.restore-mode-row button{flex:1;padding:6px 8px;border:1.5px solid var(--border);border-radius:6px;background:#fff;color:var(--text);font-size:12px;cursor:pointer;font-weight:600;white-space:nowrap;transition:all .15s}
.restore-mode-row button:hover{background:var(--bg);border-color:var(--primary)}
.restore-mode-row button.active{background:var(--success);color:#fff;border-color:var(--success)}
/* 保存按钮红点 */
.topbar-btn.save-btn{position:relative}
.topbar-btn.save-btn .badge-dot{position:absolute;top:2px;right:2px;width:7px;height:7px;border-radius:50%;background:var(--success);display:none}
.topbar-btn.save-btn.has-save .badge-dot{display:block}
/* 一键清屏按钮 */
.topbar-btn.clear-btn{background:rgba(239,68,68,.08);border-color:#ef4444}
.topbar-btn.clear-btn:hover{background:#ef4444;color:#fff}

/* ══════════════════════════════════════════════════════════
   P0-01 整改：以下规则对应 index.html 中的内联 style=""
   迁移后 CSP 无需 'unsafe-inline'，增强安全等级
   ══════════════════════════════════════════════════════════ */

/* 紧凑按钮组 */
.btn-group.btn-group-compact { margin-left: 0; }

/* 空状态辅助文字 */
.empty-hint-sub { font-size: 12px; color: var(--muted); margin-top: 8px; }

/* 画布与缩放栏初始隐藏 */
#canvasWrap { display: none; }
#zoomBar    { display: none; }
#btnZoomFit { font-size: 13px; }

/* 预设按钮行 */
.preset-row-compact { margin-top: 4px; }

/* 提取按钮 */
#btnApplyExtract { margin-top: 10px; }

/* 取景框区域 */
#frameSection { display: none; }
#frameInfo    { display: none; }

/* 面板提示文字 */
.panel-hint { font-size: 11px; color: var(--muted); margin-bottom: 8px; line-height: 1.5; }
.panel-hint strong { color: var(--primary); }

/* 移动按钮行 */
.btn-row-2-top { margin-top: 6px; }

/* 移动按钮描述 */
.move-btn-desc { font-size: 10px; opacity: 0.8; }

/* 精细擦除 */
#btnFineErase { margin-top: 4px; }

/* 画笔面板 */
#brushSection { display: none; }
.size-presets-label { margin-top: 6px; font-size: 11px; color: var(--muted); }

/* 还原模式区域 */
#restoreModeSection { display: none; margin-top: 8px; border-top: 1px solid var(--border); padding-top: 8px; }
.restore-mode-label { font-size: 11px; color: var(--muted); margin-bottom: 6px; }

/* 颜色选取器 */
#customBgColor { width: 36px; height: 36px; border: none; background: none; cursor: pointer; padding: 0; border-radius: 6px; }

/* 背景色组带分隔线 */
.bg-group-sep { margin-left: 0; border-left: 1px solid var(--line); }

/* 导出尺寸下拉 */
#exportSize { padding: 6px 8px; border: 1px solid var(--line); border-radius: 5px; background: var(--card); font-family: inherit; font-size: 12px; cursor: pointer; }

/* PNG 透明标识 */
#pngTransparencyBadge { display: inline-flex; align-items: center; gap: 4px; font-size: 11px; color: #16a34a; font-weight: 700; padding: 4px 10px; background: rgba(22,163,74,.12); border: 1px solid rgba(22,163,74,.4); border-radius: 5px; letter-spacing: .5px; }
.png-trans-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: #16a34a; box-shadow: 0 0 0 2px rgba(22,163,74,.25); }

/* 进度条初始宽度 */
#progressFill { width: 0; }

/* 隐藏文件输入 */
#fileInput { display: none; }

/* ===== Pro 授权系统样式 ===== */

/* Pro 标签 */
.pro-tag {
  display: inline-block;
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 3px;
  margin-left: 4px;
  vertical-align: middle;
  letter-spacing: .5px;
}

/* Pro 锁定状态 */
.pro-locked {
  position: relative;
  opacity: 0.65;
}
.pro-locked::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: repeating-diagonal-stripes;
  pointer-events: none;
  border-radius: inherit;
}

/* Pro 按钮 */
.pro-btn {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #fff;
  border: none;
  font-weight: 700;
  font-size: 12px;
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}
.pro-btn:hover {
  background: linear-gradient(135deg, #d97706, #b45309);
  box-shadow: 0 2px 8px rgba(245, 158, 11, 0.4);
}
.pro-btn.activated {
  background: linear-gradient(135deg, #16a34a, #15803d);
  cursor: default;
}
.pro-btn.activated:hover {
  box-shadow: none;
}

/* 激活弹窗 */
.activation-modal {
  max-width: 460px;
  width: 90%;
}
.activation-hint {
  text-align: center;
  color: #6b7280;
  font-size: 14px;
  margin-bottom: 16px;
}
.activation-features {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 16px;
}
.act-feature {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: #374151;
  padding: 4px 0;
}
.act-feature .check {
  color: #16a34a;
  font-weight: 700;
  font-size: 14px;
}

/* 授权码输入框 */
.license-input {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #d1d5db;
  border-radius: 8px;
  font-size: 18px;
  font-family: "Fira Code", "Cascadia Code", Consolas, monospace;
  letter-spacing: 2px;
  text-align: center;
  text-transform: uppercase;
  color: #1a1a2e;
  background: #fff;
  transition: border-color 0.2s;
  box-sizing: border-box;
}
.license-input:focus {
  outline: none;
  border-color: #f59e0b;
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
}

/* 授权消息 */
.license-msg {
  text-align: center;
  font-size: 13px;
  margin-top: 8px;
  min-height: 18px;
  transition: all 0.2s;
}
.license-msg.error {
  color: #dc2626;
}
.license-msg.success {
  color: #16a34a;
  font-weight: 600;
}

/* 弹窗显示 */
.modal-backdrop {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 9999;
  justify-content: center;
  align-items: center;
}
.modal-backdrop.show {
  display: flex;
}

/* 导出倍率 Pro 选项 */
#exportSize option:disabled {
  color: #9ca3af;
}