:root{
  --paper:#fdf6ec;
  --paper-deep:#f7ecdb;
  --ink:#4a3b32;
  --ink-soft:#8a7766;
  --card:#fffdf8;
  --line:#ecdfc9;
  --berry:#e85d75;
  --berry-deep:#d34063;
  --mint:#3fae8c;
  --sky:#5aa7d6;
  --sky-deep:#3d87b8;
  --sun:#f4b942;
  --shadow:0 10px 30px -12px rgba(120,90,50,.25);
  --r-lg:20px;
  --r-md:14px;
  --font-display:'ZCOOL KuaiLe','Yuanti SC','幼圆','YouYuan','Microsoft YaHei',sans-serif;
  --font-body:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --topbar-h:56px;
  --status-h:42px;
  --tabbar-h:60px;
  --safe-b:env(safe-area-inset-bottom,0px);
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html{-webkit-text-size-adjust:100%}
html,body{height:100%;overflow:hidden}
body{
  font-family:var(--font-body);color:var(--ink);background:var(--paper);
  display:flex;flex-direction:column;
  height:100vh;height:100dvh;
  touch-action:manipulation;
}
button{font-family:inherit}

/* ===================== 顶栏 ===================== */
.topbar{
  flex:none;height:var(--topbar-h);display:flex;align-items:center;gap:10px;
  padding:0 14px;padding-top:env(safe-area-inset-top,0px);
  height:calc(var(--topbar-h) + env(safe-area-inset-top,0px));
  background:linear-gradient(180deg,#fffdf8,#fbf4e8);border-bottom:1px solid var(--line);
  z-index:30;
}
.brand{font-family:var(--font-display);font-size:21px;letter-spacing:.06em;display:flex;align-items:center;gap:6px;white-space:nowrap}
.brand .bead{width:.7em;height:.7em;border-radius:50%;box-shadow:inset 0 0 0 .22em var(--sky)}
.top-actions{margin-left:auto;display:flex;align-items:center;gap:8px}
.top-sep{width:1px;height:24px;background:var(--line);margin:0 2px}
.topbtn{
  min-height:40px;padding:0 14px;border:1.5px solid var(--line);background:#fff;
  border-radius:11px;font-size:14.5px;font-weight:700;color:var(--ink-soft);cursor:pointer;
  display:flex;align-items:center;transition:all .15s;white-space:nowrap;
}
.topbtn.on{background:linear-gradient(180deg,var(--sky),var(--sky-deep));color:#fff;border-color:var(--sky-deep)}
.topbtn.ghost{color:var(--ink)}
.topbtn.primary{background:linear-gradient(180deg,var(--sky),var(--sky-deep));color:#fff;border-color:var(--sky-deep)}
.topbtn:active{transform:scale(.95)}
.topbtn[disabled]{opacity:.4;pointer-events:none}

/* ===================== 画布主体 ===================== */
.stage{position:relative;flex:1;min-height:0;overflow:hidden;background:var(--card)}
#canvasScroll{
  position:absolute;inset:0;overflow:auto;padding:18px;
  -webkit-user-select:none;user-select:none;
  background:repeating-conic-gradient(#f3ead9 0 25%,#faf3e6 0 50%) 0 0/26px 26px;
  -webkit-overflow-scrolling:touch;
}
#viewCanvas{
  display:block;margin:auto;box-shadow:0 8px 26px rgba(100,70,30,.3);
  border-radius:4px;background:#fff;touch-action:none;
}

/* 空状态 */
#emptyState{
  position:absolute;inset:0;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:16px;color:var(--ink-soft);
  text-align:center;padding:0 30px;z-index:10;
}
#emptyState.hide{display:none}
#emptyState .beads{display:flex;gap:12px}
#emptyState .beads i{width:30px;height:30px;border-radius:50%;box-shadow:inset 0 0 0 9px var(--c);animation:float 2s ease-in-out infinite;animation-delay:var(--d)}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
#emptyState p{font-size:16px;line-height:1.8}
#emptyState .hint{font-size:13px}
.big-import{max-width:300px;font-size:17px;padding:16px}

/* 浮动工具条（竖向贴左） */
.toolrail{
  position:absolute;left:12px;top:50%;transform:translateY(-50%);
  display:flex;flex-direction:column;gap:8px;z-index:20;
  background:rgba(255,253,248,.92);backdrop-filter:blur(6px);
  border:1px solid var(--line);border-radius:16px;padding:8px;box-shadow:var(--shadow);
}
.tool{
  width:48px;height:48px;border-radius:13px;border:1.5px solid var(--line);background:#fff;cursor:pointer;
  font-size:22px;display:flex;align-items:center;justify-content:center;transition:all .15s;
}
.tool:active{transform:scale(.92)}
.tool.on{background:var(--sky);border-color:var(--sky-deep);color:#fff;box-shadow:0 3px 10px -2px rgba(61,135,184,.6)}
.tool[disabled]{opacity:.32;pointer-events:none}
.tool-sep{height:1px;background:var(--line);margin:2px 4px}
.stage.no-edit .toolrail .tool[data-edit]{opacity:.32;pointer-events:none}

/* 画笔当前色（顶部居中浮条） */
#brushChip{
  position:absolute;top:12px;left:50%;transform:translateX(-50%);
  display:flex;align-items:center;gap:8px;font-size:13.5px;font-weight:700;color:var(--ink);
  background:rgba(255,253,248,.94);backdrop-filter:blur(6px);
  border:1px solid var(--line);border-radius:99px;padding:8px 16px;box-shadow:var(--shadow);
  z-index:20;white-space:nowrap;max-width:80%;overflow:hidden;text-overflow:ellipsis;
}
#brushChip b{width:20px;height:20px;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1.5px rgba(0,0,0,.15);background:#ccc;flex:none}
.stage.no-edit #brushChip{display:none}

/* 缩放浮条（右下） */
.zoomdock{
  position:absolute;right:12px;bottom:12px;z-index:20;
  display:flex;align-items:center;gap:8px;
  background:rgba(255,253,248,.92);backdrop-filter:blur(6px);
  border:1px solid var(--line);border-radius:16px;padding:8px 12px;box-shadow:var(--shadow);
}
.zbtn{
  width:40px;height:40px;border-radius:11px;border:1.5px solid var(--line);background:#fff;
  font-size:22px;font-weight:700;color:var(--sky-deep);cursor:pointer;flex:none;line-height:1;
}
.zbtn:active{transform:scale(.92)}
.zoomdock input[type=range]{width:120px}

/* spinner */
.spinner{
  display:none;position:absolute;inset:0;z-index:40;background:rgba(253,246,236,.82);
  align-items:center;justify-content:center;flex-direction:column;gap:14px;color:var(--ink-soft);font-weight:700;
}
.spinner.on{display:flex}
.spinner .ring{width:46px;height:46px;border-radius:50%;border:5px solid var(--line);border-top-color:var(--sky);animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ===================== 状态栏 ===================== */
.statusbar{
  flex:none;height:var(--status-h);display:flex;align-items:center;gap:16px;
  padding:0 16px;font-size:13px;color:var(--ink-soft);
  border-top:1px solid var(--line);background:#fffdf8;overflow-x:auto;white-space:nowrap;
}
.statusbar b{color:var(--ink);font-weight:700}
.status-spacer{flex:1;min-width:8px}
.statusbar .chk{display:flex;align-items:center;gap:5px;cursor:pointer;font-size:13px}
.statusbar .chk input{width:18px;height:18px;accent-color:var(--sky);cursor:pointer;margin:0}

/* ===================== 底部 Tab 栏 ===================== */
.tabbar{
  flex:none;height:calc(var(--tabbar-h) + var(--safe-b));padding-bottom:var(--safe-b);
  display:flex;gap:10px;padding-left:14px;padding-right:14px;align-items:center;
  background:linear-gradient(0deg,#fffdf8,#fbf4e8);border-top:1px solid var(--line);z-index:30;
}
.tabbtn{
  flex:1;height:46px;border:1.5px solid var(--line);background:#fff;border-radius:14px;
  font-size:15.5px;font-weight:700;color:var(--ink);cursor:pointer;
  display:flex;align-items:center;justify-content:center;gap:6px;transition:all .15s;
}
.tabbtn:active{transform:scale(.97)}
.tabbtn.on{background:linear-gradient(180deg,var(--sky),var(--sky-deep));color:#fff;border-color:var(--sky-deep)}
.tabbtn .badge{
  min-width:22px;height:22px;padding:0 6px;border-radius:11px;background:var(--sun);color:#5a4106;
  font-size:12.5px;display:none;align-items:center;justify-content:center;
}
.tabbtn .badge.on{display:flex}
.tabbtn.on .badge{background:rgba(255,255,255,.85);color:var(--sky-deep)}

/* ===================== 抽屉 ===================== */
.sheet-backdrop{
  position:fixed;inset:0;background:rgba(60,45,35,.32);opacity:0;pointer-events:none;
  transition:opacity .25s;z-index:45;
}
.sheet-backdrop.on{opacity:1;pointer-events:auto}
.sheet{
  position:fixed;left:0;right:0;bottom:0;z-index:50;
  background:var(--card);border-top-left-radius:22px;border-top-right-radius:22px;
  box-shadow:0 -12px 40px -10px rgba(120,90,50,.4);
  transform:translateY(110%);transition:transform .3s cubic-bezier(.32,.72,0,1);
  display:flex;flex-direction:column;
  max-height:min(82vh,720px);
  padding-bottom:var(--safe-b);
}
.sheet.on{transform:translateY(0)}
.sheet-grip{width:44px;height:5px;border-radius:3px;background:var(--line);margin:10px auto 4px}
.sheet-head{display:flex;align-items:center;justify-content:space-between;padding:6px 20px 12px;border-bottom:1px solid var(--line)}
.sheet-head h2{font-family:var(--font-display);font-weight:400;font-size:20px;letter-spacing:.08em;display:flex;align-items:center;gap:8px}
.sheet-head h2::before{content:'';width:13px;height:13px;border-radius:50%;box-shadow:inset 0 0 0 4px var(--sky)}
.sheet-close{min-height:38px;padding:0 18px;border:none;background:var(--sky);color:#fff;border-radius:11px;font-size:15px;font-weight:700;cursor:pointer}
.sheet-close:active{transform:scale(.95)}
.sheet-body{overflow-y:auto;padding:16px 20px 24px;-webkit-overflow-scrolling:touch}
.sheet-body.nopad{padding:12px 0 16px;display:flex;flex-direction:column;min-height:0}

/* ===================== 控件 ===================== */
.field{margin-top:18px}
.field>label{
  display:flex;justify-content:space-between;align-items:baseline;
  font-size:15px;font-weight:700;margin-bottom:9px;letter-spacing:.02em;gap:8px;
}
.num-in{
  width:74px;padding:7px 8px;border:1.5px solid var(--line);border-radius:9px;
  font-weight:700;color:var(--sky-deep);text-align:right;font-size:15px;outline:none;background:#fff;
}
.num-in:focus{border-color:var(--sky)}
select{
  width:100%;padding:13px 14px;border-radius:12px;border:1.5px solid var(--line);
  background:#fff;color:var(--ink);cursor:pointer;outline:none;font-family:inherit;font-size:16px;
}
select:focus{border-color:var(--sky)}
.hint{font-size:13px;color:var(--ink-soft);font-weight:400;line-height:1.6;margin-top:6px}
.field .hint{margin-top:4px}

input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:34px;background:transparent;cursor:pointer}
input[type=range]::-webkit-slider-runnable-track{height:10px;border-radius:5px;background:linear-gradient(90deg,#c5d8f0,#bfe3d4,#f9dfa8)}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;width:30px;height:30px;margin-top:-10px;border-radius:50%;
  background:#fff;border:none;box-shadow:inset 0 0 0 8px var(--sky),0 2px 7px rgba(0,0,0,.3);
}
input[type=range]::-moz-range-track{height:10px;border-radius:5px;background:linear-gradient(90deg,#c5d8f0,#bfe3d4,#f9dfa8)}
input[type=range]::-moz-range-thumb{width:30px;height:30px;border-radius:50%;background:#fff;border:8px solid var(--sky);box-shadow:0 2px 7px rgba(0,0,0,.3)}
.zoomdock input[type=range]{height:30px}

.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.grid2 .field{margin-top:14px}

.btn{
  display:flex;align-items:center;justify-content:center;gap:8px;width:100%;
  padding:15px;border:none;border-radius:14px;cursor:pointer;margin-top:16px;
  font-weight:700;font-size:16px;letter-spacing:.04em;transition:transform .12s,filter .12s;
}
.btn:active{transform:scale(.98)}
.btn-sky{background:linear-gradient(180deg,var(--sky),var(--sky-deep));color:#fff;box-shadow:0 6px 16px -4px rgba(61,135,184,.55)}
.btn-ghost{background:#fff;border:1.5px solid var(--line);color:var(--ink)}

.seg{display:flex;border:1.5px solid var(--line);border-radius:14px;overflow:hidden;background:#fff}
.seg.big button{padding:15px 6px;font-size:16px}
.seg button{
  flex:1;border:none;background:#faf4ea;cursor:pointer;
  color:var(--ink-soft);font-weight:700;font-family:inherit;
  transition:all .18s;border-right:1.5px solid var(--line);
}
.seg button:last-child{border-right:none}
.seg button.on{background:linear-gradient(180deg,var(--sky),var(--sky-deep));color:#fff}

.switch-row{display:flex;justify-content:space-between;align-items:center;margin-top:18px;gap:12px}
.switch-row>span{font-size:15px;font-weight:700}
.switch-row .hint{font-weight:400}
.switch{position:relative;width:56px;height:32px;flex:none}
.switch input{opacity:0;width:100%;height:100%;position:absolute;cursor:pointer;z-index:2;margin:0}
.switch i{position:absolute;inset:0;border-radius:16px;background:#ddd0bd;transition:.2s}
.switch i::after{content:'';position:absolute;width:26px;height:26px;border-radius:50%;background:#fff;top:3px;left:3px;transition:.2s;box-shadow:0 1px 4px rgba(0,0,0,.3)}
.switch input:checked+i{background:var(--mint)}
.switch input:checked+i::after{left:27px}

/* ===================== 颜色清单 ===================== */
.listhint{padding:0 20px 8px}
#colorList{flex:1;min-height:0;overflow-y:auto;padding:0 14px;-webkit-overflow-scrolling:touch}
#colorList .empty{padding:24px 8px;text-align:center}
.color-item{
  display:flex;align-items:center;gap:12px;padding:11px 10px;border-radius:13px;
  cursor:pointer;transition:background .12s;font-size:15px;border:1.5px solid transparent;
}
.color-item:active{background:var(--paper)}
.color-item.lit{background:#eef5fd;border-color:#bcdcf3}
.color-item.lit .dot{box-shadow:0 0 0 2px var(--sky),0 0 0 4px #fff,inset 0 0 0 999px var(--c)}
.color-item .dot{
  width:34px;height:34px;border-radius:50%;flex:none;border:2px solid #fff;
  box-shadow:0 0 0 1px rgba(0,0,0,.18),inset 0 0 0 999px var(--c);position:relative;
}
.color-item .dot::after{content:'';position:absolute;inset:10px;border-radius:50%;background:rgba(255,255,255,.55)}
.color-item .info{flex:1;min-width:0}
.color-item .info em{font-style:normal;font-weight:700;display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.color-item .info small{display:block;color:var(--ink-soft);font-size:12.5px;margin-top:2px}
.color-item .num{font-weight:700;font-variant-numeric:tabular-nums;font-size:14px;text-align:right}
.color-item .num small{font-weight:400;color:var(--ink-soft);display:block;font-size:11px}
.color-item .repl-btn{
  flex:none;border:1.5px solid var(--line);background:#fff;border-radius:10px;
  font-size:13.5px;padding:9px 13px;cursor:pointer;color:var(--ink-soft);line-height:1;font-weight:700;
}
.color-item .repl-btn:active{background:#f3f9ff}
.color-item.repl-src{background:#fff4e6;border-color:#f7b955}
#colorList.repl-pick .color-item:not(.repl-src):active{background:#eaf6ec;border-color:#7bc97f}

#replBar{
  display:none;margin:0 14px 8px;padding:11px 13px;border-radius:12px;
  background:#fff8ee;border:1.5px solid #f7d9a8;font-size:14px;color:#9a6a12;line-height:1.5;
}
#replBar.on{display:block}
#replBar button{background:none;border:none;color:#c0392b;cursor:pointer;font-size:14px;text-decoration:underline;padding:6px 0 0;margin-left:6px;font-weight:700}
#colorTotal{margin:10px 20px 0;padding-top:12px;border-top:1.5px dashed var(--line);font-size:14px;color:var(--ink-soft);line-height:1.8}
#colorTotal b{color:var(--sky-deep);font-size:17px}

/* ===================== Toast ===================== */
#toast{
  position:fixed;left:50%;bottom:calc(var(--tabbar-h) + var(--safe-b) + 20px);
  transform:translateX(-50%) translateY(80px);
  background:var(--ink);color:#fff;padding:13px 24px;border-radius:99px;
  font-size:15px;opacity:0;transition:all .3s cubic-bezier(.34,1.56,.64,1);
  z-index:99;pointer-events:none;box-shadow:0 10px 30px rgba(0,0,0,.3);max-width:84vw;text-align:center;
}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ===================== 横屏：颜色清单做成右侧常驻栏（CSS Grid） ===================== */
@media (orientation:landscape) and (min-width:900px){
  body{
    display:grid;
    grid-template-columns:1fr 304px;
    grid-template-rows:auto 1fr auto auto;
    grid-template-areas:
      "top    top"
      "stage  colors"
      "status colors"
      "tab    colors";
    height:100vh;height:100dvh;
  }
  .topbar{grid-area:top}
  .stage{grid-area:stage;min-height:0}
  .statusbar{grid-area:status}
  .tabbar{grid-area:tab}
  /* 颜色清单：常驻右侧整列（跨画布/状态/tab 三行） */
  #sheet-colors{
    grid-area:colors;position:static;transform:none;
    width:auto;max-height:none;height:auto;min-height:0;
    border-radius:0;border-left:1px solid var(--line);border-top:none;
    box-shadow:none;padding-bottom:0;
  }
  #sheet-colors .sheet-grip{display:none}
  #sheet-colors .sheet-head{padding:14px 16px}
  #sheet-colors .sheet-close{display:none}
  /* 横屏底部只留「处理设置」一个按钮 */
  .tabbar [data-sheet="colors"]{display:none}
  /* 设置抽屉：只占左侧画布列宽，右边界停在颜色栏左侧，别盖住颜色清单 */
  #sheet-settings{right:304px}
  /* 遮罩同样只盖左列 */
  .sheet-backdrop{right:304px}
}