/* ============ 基础与配色 ============ */
:root{
  --bg:#eef1f4;
  --card:#ffffff;
  --text:#1f2937;
  --muted:#6b7280;
  --faint:#94a3b8;
  --border:#e3e8ef;
  --accent:#16a34a;
  --accent-dark:#15803d;
  --accent-soft:#e8f7ee;
  --nail:#475569;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
  display:flex;flex-direction:column;
  height:100vh;height:100dvh;
  overflow:hidden;
}
button{font-family:inherit;cursor:pointer}
button:disabled{cursor:not-allowed;opacity:.55}

/* ============ 整体布局：PC 左右 ============ */
.app{display:flex;flex:1 1 auto;min-height:0;overflow:hidden}

/* ============ 左侧设置面板 ============ */
.panel{
  width:304px;flex:none;
  background:var(--card);
  border-right:1px solid var(--border);
  padding:22px 20px 20px;
  overflow-y:auto;
  display:flex;flex-direction:column;gap:16px;
}
.panel-title{font-size:21px;font-weight:800;letter-spacing:.5px}
.panel-sub{font-size:12px;color:var(--muted);margin-top:2px}
.controls-grid{display:flex;flex-direction:column;gap:12px}
.field-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:4px}
.field-head label{font-size:13px;color:var(--muted)}
.field-head output{font-size:14px;font-weight:700;color:var(--text);font-variant-numeric:tabular-nums}
input[type="range"]{
  -webkit-appearance:none;appearance:none;
  width:100%;height:6px;border-radius:3px;
  background:linear-gradient(to right,var(--accent) var(--fill,50%),#dbe2ea var(--fill,50%));
  outline:none;
}
input[type="range"]::-webkit-slider-thumb{
  -webkit-appearance:none;appearance:none;
  width:18px;height:18px;border-radius:50%;
  background:#fff;border:3px solid var(--accent);
  box-shadow:0 1px 3px rgba(15,23,42,.25);
  cursor:pointer;
}
input[type="range"]::-moz-range-thumb{
  width:14px;height:14px;border-radius:50%;
  background:#fff;border:3px solid var(--accent);
  box-shadow:0 1px 3px rgba(15,23,42,.25);
  cursor:pointer;
}
input[type="range"]:disabled::-webkit-slider-thumb{border-color:#cbd5e1;background:#f1f5f9}
input[type="range"]:disabled::-moz-range-thumb{border-color:#cbd5e1;background:#f1f5f9}
input[type="range"]:disabled{background:#e5e9ef}

.prob-block{
  background:var(--accent-soft);
  border:1px solid #cdeedd;
  border-radius:10px;
  padding:12px;
  display:flex;flex-direction:column;gap:8px;
}
.prob-label{font-size:13px;font-weight:700;color:var(--accent-dark)}
.radio{display:flex;align-items:flex-start;gap:7px;font-size:13px;color:var(--text);line-height:1.35;cursor:pointer}
.radio input{accent-color:var(--accent);margin-top:2px;width:15px;height:15px}
.radio span{flex:1}
#probField{margin-top:2px;padding-top:8px;border-top:1px dashed #b9e3cc}

.btn-grid{display:flex;gap:8px;flex-wrap:wrap}
.btn{
  flex:1 1 auto;min-width:86px;min-height:38px;
  border:1px solid #d1d8e0;border-radius:8px;
  background:#fff;color:var(--text);
  font-size:14px;font-weight:600;
  transition:background .15s,border-color .15s,transform .05s;
}
.btn:hover:not(:disabled){background:#f6f8fa;border-color:#b6bfcb}
.btn:active:not(:disabled){transform:translateY(1px)}
.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn-primary:hover:not(:disabled){background:var(--accent-dark);border-color:var(--accent-dark)}
.btn-danger{background:#fff;border-color:#f1b0a8;color:#b42318}
.btn-danger:hover:not(:disabled){background:#fef3f2}
.divider{height:1px;background:var(--border)}
.panel.is-locked .field,
.panel.is-locked .radio{opacity:.55}
.panel.is-locked .prob-block{opacity:.8}

/* ============ 右侧板子区 ============ */
.board-wrap{
  flex:1;min-width:0;
  display:flex;flex-direction:column;
  padding:16px;gap:10px;
}
.board-header{
  display:flex;justify-content:space-between;align-items:baseline;
  padding:0 4px;
}
.board-title{font-size:16px;font-weight:800}
.board-title span{font-size:12px;font-weight:500;color:var(--faint);margin-left:8px}
.remaining{font-size:14px;color:var(--muted);font-variant-numeric:tabular-nums}
.remaining b{font-size:18px;font-weight:800;color:var(--accent-dark);margin-left:4px}
.canvas-wrap{
  flex:1;position:relative;min-height:0;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:12px;
  overflow:hidden;
  box-shadow:0 1px 3px rgba(15,23,42,.06);
}
canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.hint-portrait{display:none}
.footer{
  flex:none;
  text-align:center;
  padding:3px 0 4px;
  font-size:14px;
  color:rgba(0,0,0,.7);
  background:var(--bg);
}
.footer a{color:inherit;text-decoration:none}
.footer a:hover{text-decoration:underline}

/* ============ 移动端竖屏：上下布局，板子上 60% ============ */
@media (max-width:768px), (max-width:1024px) and (orientation:portrait){
  .app{flex-direction:column}
  .board-wrap{
    flex:0 0 60%;order:1;
    padding:6px 6px 0;gap:4px;
  }
  .panel{
    order:2;flex:1 1 40%;width:100%;
    border-right:none;border-top:1px solid var(--border);
    padding:7px 10px;
    display:grid;grid-template-columns:1fr 1fr;gap:3px 10px;
    align-content:start;
  }
  .panel-title{display:none}
  .panel-sub{display:none}
  .panel > div:first-child{display:none}
  .controls-grid{display:contents}
  .controls-grid .field{margin-bottom:1px}
  .field-head{margin-bottom:1px}
  .field-head label{font-size:11px}
  .field-head output{font-size:11px}
  input[type="range"]{height:4px;margin:2px 0}
  input[type="range"]::-webkit-slider-thumb{width:13px;height:13px;border-width:2px}
  input[type="range"]::-moz-range-thumb{width:11px;height:11px;border-width:2px}
  /* 概率调整模式：两个单选放到同一行 */
  .prob-block{
    grid-column:1 / -1;padding:6px 8px;gap:3px 8px;
    display:grid;grid-template-columns:1fr 1fr;align-items:center;
  }
  .prob-label{grid-column:1 / -1;font-size:11px}
  .radio{font-size:11px;line-height:1.25;gap:4px}
  .radio input{width:12px;height:12px;margin-top:1px}
  #probField{grid-column:1 / -1;padding-top:4px;margin-top:1px}
  .btn-grid{grid-column:1 / -1;gap:6px}
  .btn{min-height:34px;min-width:0;padding:4px 6px;font-size:11px;border-radius:7px}
  .divider{display:none}
  .remaining{font-size:11px}
  .remaining b{font-size:14px}
  .board-title{font-size:13px}
  .board-title span{font-size:10px}
  .hint-portrait{
    display:block;
    position:absolute;top:6px;right:10vw;
    font-size:10px;color:#e85d5d;
    text-align:right;line-height:1.35;
    pointer-events:none;user-select:none;z-index:2;
  }
  .footer{font-size:11px;padding:2px 0 3px}
}
@media (max-width:360px){
  .btn{min-width:0;padding:4px 4px;font-size:10px}
  .footer{font-size:10px}
}