/* ===== 基础主题变量 ===== */
:root{
  --primary:#4caf50;
  --primary-dark:#409444;
  --bg:#f5f7fa;
  --card:#fff;
  --text:#333;
  --radius:12px;
  --shadow:0 6px 18px rgba(0,0,0,.08);
}

*,*::before,*::after{ box-sizing:border-box; margin:0; padding:0; }

html{ font-size:16px; }
html,body{ touch-action:manipulation; }

body{
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:100vh;
  padding:12px;
  font-family:"Times New Roman",Times,"Noto Serif CJK SC",serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.35;
}

.card{
  width:100%;
  max-width:420px;
  padding:24px 28px;
  background:var(--card);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}

.card h2{ margin-bottom:8px; text-align:center; font-size:1.25rem; }

.form-group{ display:flex; flex-direction:column; gap:2px; margin-bottom:8px; }

input[type="number"], input[type="text"]{
  padding:3px 5px;
  font-size:14px;
  border:1px solid #ccd1d9;
  border-radius:var(--radius);
  transition:border-color .2s;
}
input:focus{ border-color:var(--primary); outline:none; }

.boost-row{ display:flex; flex-wrap:wrap; gap:10px; }
.boost-col{ flex:1 1 0; display:flex; align-items:center; gap:4px; }
.boost-col label{ white-space:nowrap; font-size:14px; }
.boost-col input{ flex:0 0 96px; padding:3px 6px; font-size:13px; }

label[for="stoneBoosts"]{ color:transparent; position:relative; }
label[for="stoneBoosts"]::before{
  content:"加速石头次数";
  color:var(--text);
  position:absolute; inset:0;
  font-size:14px;
}

button{
  width:100%; padding:8px 0; margin-top:8px;
  font-size:15px; font-weight:600; border:none;
  border-radius:var(--radius); cursor:pointer;
  transition:background .2s;
}
button:disabled{ background:#c8c8c8; cursor:not-allowed; }
button:not(:disabled){ background:var(--primary); color:#fff; }
button:not(:disabled):hover{ background:var(--primary-dark); }

.results{ margin-top:10px; font-size:14px; line-height:1.4; }
.results p{ margin:2px 0; }
.results span, #countdown, #acceleratedCountdown{ font-weight:700; color:var(--primary); }

#externalCountdown{ font-weight:700; color:var(--primary); }

#neededSeconds{ display:none!important; }

footer{
  display:flex; align-items:center; justify-content:center; gap:4px; flex-wrap:wrap; margin-top:12px;
}
footer>*{ display:inline-flex; align-items:center; white-space:nowrap; }
footer details summary{ cursor:pointer; }

#visitCounterFixed{
  position:fixed; bottom:0; left:50%; transform:translateX(-50%);
  width:50%; padding:3px 0; font-size:.75em; line-height:1.1; text-align:center;
  background:#f2f2f2; color:#555; box-shadow:0 -2px 6px rgba(0,0,0,.05);
  border-radius:var(--radius) var(--radius) 0 0; z-index:1000;
}
@media(max-width:600px){
  #visitCounterFixed{ width:90%; padding:3px 0; font-size:.7em; }
  .boost-col input{ flex-basis:80px; }
  .card{ max-width:96vw; }
}

/* ===== 遮罩层：用 hidden 属性控制显示，移除 JS 内联 display 操作 ===== */
.overlay{
  position:fixed; inset:0;
  display:flex;  /* 默认展示布局，由 hidden 控制隐藏 */
  align-items:center; justify-content:center;
  background:rgba(0,0,0,.45); z-index:2000;
}
.overlay[hidden]{ display:none !important; }  /* hidden 优先生效 */

.editor{
  max-width:90vw; max-height:90vh; overflow:auto;
  padding:20px 28px; background:#fff; border-radius:var(--radius); box-shadow:var(--shadow);
  font-family:"Times New Roman",Times,"Noto Serif CJK SC",serif;
}
.editor h3{ margin-bottom:10px; font-size:1.05rem; font-weight:600; }

#csvTable{ border-collapse:collapse; font-size:.85rem; width:100%; }
#csvTable th, #csvTable td{ border:1px solid #ddd; padding:4px 6px; text-align:center; }
#csvTable th{ background:#f8f8f8; }
#csvTable td[contenteditable="true"]{ background:#fffbea; }
/* JS 会切换 .invalid 类，统一在 CSS 呈现错误状态 */
#csvTable td.invalid{ background:#ffeaea; outline:1px solid #ff4d4f; }

.editor-actions{ margin-top:12px; text-align:right; }
.editor-actions button{ width:auto; padding:6px 18px; margin-left:6px; font-size:13px; }

h2{ margin-bottom:0.25rem; }
.version-note{ margin:2px 0; color:#c00; font-size:.75rem; display:block; text-align:center; }
details{ margin-top:4px; font-size:.85rem; }
details summary{ cursor:pointer; outline:none; }
pre#historyContent{ white-space:pre-wrap; line-height:1.4; font-size:.75rem; margin:4px 0 0; padding:4px 0; }

.editor img{ float:right; max-width:200px; margin-left:12px; }

/* ===== 表单 2×2 网格布局（保持原有） ===== */
#expForm{ display:grid; grid-template-columns:repeat(2,1fr); column-gap:12px; }
#expForm .form-group:first-child, #expForm .boost-row, #expForm button{ grid-column:1 / -1; }
@media (max-width:600px){ #expForm{ grid-template-columns:1fr; } }
#expForm{ justify-content:center; }
.boost-row{ justify-content:flex-start; }
.boost-col{ flex:0 0 auto; }

/* ===== 轻量 Toast 样式：由 JS 赋予 .toast & .toast-{type} 类 ===== */
#toastHost{
  position:fixed; top:1rem; right:1rem;
  display:flex; flex-direction:column; gap:.5rem;
  z-index:10000; pointer-events:none;
}
.toast{
  max-width:360px; padding:.6rem .8rem; border-radius:.75rem;
  backdrop-filter:blur(6px); box-shadow:0 6px 18px rgba(0,0,0,.15);
  pointer-events:auto; color:#0b0b0c;
  font:500 14px/1.4 system-ui, -apple-system, Segoe UI, Roboto, Arial;
  background:rgba(255,255,255,.88);
}
.toast-error{ background:rgba(255,71,87,.90); }
.toast-warn{ background:rgba(255,164,27,.90); }
.toast-success{ background:rgba(46,213,115,.90); }
/* .toast-info 使用默认底色 */