/* ============================================================
   一宁小古文 · 管理后台（隐蔽入口，普通访客不可见）
   复用全站宣纸色板：纸 #F0E8D2 · 卡 #F7F1E0 · 朱砂 #C53A2A
   ============================================================ */

.admin-overlay {
  position: fixed; inset: 0; z-index: 9999;
  background: var(--paper);
  overflow-y: auto; -webkit-overflow-scrolling: touch;
  font-family: var(--sans); color: var(--ink);
  display: none;
}
.admin-overlay.open { display: block; }

.admin-wrap { max-width: 560px; margin: 0 auto; padding: 22px 16px 48px; }

/* 头部 */
.admin-head { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.admin-head .badge {
  width: 42px; height: 42px; flex: none; border-radius: 10px;
  background: var(--vermilion); color: #F7F1E0;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--brush); font-size: 24px;
  box-shadow: 0 2px 8px rgba(197,58,42,.28);
}
.admin-head h1 { font-family: var(--serif); font-size: 19px; font-weight: 700; }
.admin-head .sub { font-size: 12px; color: var(--ink-soft); }
.admin-head .close {
  margin-left: auto; width: 34px; height: 34px; border-radius: 50%;
  border: 1px solid var(--border); background: var(--card);
  color: var(--ink-soft); font-size: 17px; line-height: 1;
  display: flex; align-items: center; justify-content: center;
}

/* 口令屏 */
.admin-gate { max-width: 320px; margin: 12vh auto 0; text-align: center; }
.admin-gate .lock { font-size: 40px; margin-bottom: 10px; }
.admin-gate h2 { font-family: var(--serif); font-size: 18px; margin-bottom: 6px; }
.admin-gate p { font-size: 12.5px; color: var(--ink-soft); margin-bottom: 18px; }
.admin-gate input {
  width: 100%; padding: 12px 14px; font-size: 16px; text-align: center;
  letter-spacing: 6px; border: 1.5px solid var(--border); border-radius: 10px;
  background: var(--card); color: var(--ink); outline: none;
}
.admin-gate input:focus { border-color: var(--vermilion); }
.admin-gate .err { color: var(--vermilion); font-size: 12.5px; min-height: 20px; margin-top: 8px; }
.admin-gate .hint { margin-top: 22px; font-size: 12px; color: var(--num-muted); line-height: 1.7; }

/* 统计条 */
.admin-stats { display: flex; gap: 8px; margin-bottom: 14px; }
.admin-stats .st {
  flex: 1; background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; padding: 9px 6px; text-align: center;
}
.admin-stats .st b { font-family: var(--serif); font-size: 18px; display: block; }
.admin-stats .st span { font-size: 12px; color: var(--ink-soft); }
.admin-stats .st.hl b { color: var(--vermilion); }

/* 册别切换 */
.admin-tabs { display: flex; gap: 8px; margin-bottom: 10px; }
.admin-tabs button {
  flex: 1; padding: 9px 0; border-radius: 99px; font-size: 13.5px;
  border: 1px solid var(--border); background: var(--card); color: var(--ink-soft);
}
.admin-tabs button.on { background: var(--vermilion); border-color: var(--vermilion); color: #F7F1E0; font-weight: 600; }

/* 课列表 */
.admin-list { background: var(--card); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.admin-row {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 14px; border-bottom: 1px dashed #E8DCC0;
  cursor: pointer; -webkit-tap-highlight-color: transparent;
}
.admin-row:last-child { border-bottom: none; }
.admin-row:active { background: #F2EAD6; }
.admin-row .no {
  flex: none; width: 34px; height: 34px; border-radius: 9px;
  background: #EFE7D2; color: var(--ink-soft);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-size: 13px; font-weight: 700;
}
.admin-row .tt { flex: 1; min-width: 0; }
.admin-row .tt .t { font-size: 14.5px; font-weight: 600; font-family: var(--serif);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.admin-row .tt .s { font-size: 12px; color: var(--num-muted); margin-top: 1px; }
.admin-row .stat { flex: none; }

.tag { display: inline-block; font-size: 12px; border-radius: 99px; padding: 2px 9px; white-space: nowrap; }
.tag.ok   { background: #E4EDD9; color: #3E7A34; }
.tag.wait { background: var(--vermilion-soft); color: var(--vermilion); }
.tag.todo { background: #EDE7D6; color: var(--num-muted); }

/* 录音台 */
.rec-card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 18px 16px; margin-bottom: 12px; }
.rec-lesson { text-align: center; margin-bottom: 6px; }
.rec-lesson .k { font-size: 12px; color: var(--num-muted); }
.rec-lesson .t { font-family: var(--serif); font-size: 24px; font-weight: 700; margin-top: 2px; }
.rec-tip { text-align: center; font-size: 12px; color: var(--ink-soft); margin-bottom: 14px; }

.rec-btn-zone { text-align: center; padding: 6px 0 2px; }
.rec-btn {
  width: 84px; height: 84px; border-radius: 50%;
  border: none; background: var(--vermilion); color: #F7F1E0;
  font-size: 14.5px; font-weight: 600; letter-spacing: 1px;
  box-shadow: 0 4px 14px rgba(197,58,42,.32);
  -webkit-tap-highlight-color: transparent;
}
.rec-btn.recording { background: #A32C1F; animation: rec-pulse 1.2s ease-in-out infinite; }
@keyframes rec-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(197,58,42,.38); }
  50%      { box-shadow: 0 0 0 16px rgba(197,58,42,0); }
}
.rec-time { text-align: center; font-size: 22px; font-family: var(--serif); font-weight: 700;
  color: var(--ink); margin-top: 12px; letter-spacing: 1px; }
.rec-live-tip { text-align: center; font-size: 12px; color: var(--num-muted); margin-top: 4px; }

/* 波形 + 剪辑 */
.wave-box { position: relative; margin: 14px 0 4px; }
.wave-box canvas { width: 100%; height: 110px; display: block; border-radius: 8px; background: #F3ECDA; }
.trim-rows { margin-top: 10px; }
.trim-row { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.trim-row label { flex: none; width: 44px; font-size: 12px; color: var(--ink-soft); }
.trim-row input[type=range] { flex: 1; accent-color: var(--vermilion); height: 26px; }
.trim-row .tv { flex: none; width: 52px; text-align: right; font-size: 12px; color: var(--ink); font-variant-numeric: tabular-nums; }
.trim-len { text-align: center; font-size: 12px; color: var(--vermilion); margin-top: 2px; }
.trim-row.cut { flex-wrap: wrap; }
.trim-row.cut label { width: 34px; }
.trim-row.cut input[type=range] { flex: none; width: calc(50% - 62px); min-width: 88px; }
.trim-row.cut .tv { width: 44px; }
.trim-row.cut .mini-btn { flex: none; }

/* 打包导出：自定义文件名 */
.zip-row {
  display: flex; align-items: center; gap: 8px;
  margin: 0 0 10px; padding: 9px 12px;
  background: var(--card); border: 1px solid var(--border); border-radius: 12px;
}
.zip-row label { flex: none; font-size: 12px; color: var(--ink-soft); }
.zip-row input {
  flex: 1; min-width: 0; border: none; outline: none;
  font-size: 16px; color: var(--ink); background: transparent;
  font-family: var(--sans);
}

/* 操作按钮 */
.admin-btns { display: flex; gap: 8px; margin-top: 14px; flex-wrap: wrap; }
.abtn {
  flex: 1; min-width: 96px; padding: 11px 8px; border-radius: 10px;
  font-size: 13.5px; font-weight: 600; text-align: center;
  border: 1px solid var(--border); background: var(--card); color: var(--ink);
  -webkit-tap-highlight-color: transparent;
}
.abtn.primary { background: var(--vermilion); border-color: var(--vermilion); color: #F7F1E0;
  box-shadow: 0 2px 8px rgba(197,58,42,.25); }
.abtn.danger { color: var(--vermilion); }
.abtn:disabled { opacity: .45; }

/* 已录管理 */
.take-row { display: flex; align-items: center; gap: 10px; padding: 11px 14px; border-bottom: 1px dashed #E8DCC0; }
.take-row:last-child { border-bottom: none; }
.take-row .tt { flex: 1; min-width: 0; }
.take-row .tt .t { font-size: 14px; font-weight: 600; font-family: var(--serif); }
.take-row .tt .s { font-size: 12px; color: var(--num-muted); margin-top: 1px; }
.take-row .act { flex: none; display: flex; gap: 6px; }
.mini-btn {
  width: 32px; height: 32px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--card); color: var(--ink-soft); font-size: 14px;
  display: flex; align-items: center; justify-content: center;
}
.mini-btn.del { color: var(--vermilion); }

/* 云端直传 */
.cloud-card {
  background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 12px 14px; margin-bottom: 12px;
}
.cloud-card .ct { font-size: 13.5px; font-weight: 600; font-family: var(--serif); }
.cloud-card .cs { font-size: 12px; color: var(--num-muted); margin-top: 2px; line-height: 1.6; }
.cloud-row { display: flex; align-items: center; gap: 8px; margin-top: 8px; }
.cloud-row input {
  flex: 1; min-width: 0; padding: 10px 12px; font-size: 16px;
  border: 1.5px solid var(--border); border-radius: 10px;
  background: var(--paper); color: var(--ink); outline: none;
  font-family: var(--sans);
}
.cloud-row input:focus { border-color: var(--vermilion); }
.cloud-card .hint { margin-top: 8px; font-size: 12px; color: var(--num-muted); line-height: 1.7; }
.mini-btn.cl { color: #3E7A34; }

/* 提示卡 */
.admin-note {
  background: var(--vermilion-soft); border: 1px solid #E5B8A5; border-radius: 12px;
  padding: 12px 14px; font-size: 12.5px; line-height: 1.8; color: var(--ink); margin-bottom: 14px;
}
.admin-note b { color: var(--vermilion); }

/* 空状态 */
.admin-empty { text-align: center; padding: 36px 0; color: var(--num-muted); font-size: 13px; }

/* Toast */
.admin-toast {
  position: fixed; left: 50%; bottom: 48px; transform: translateX(-50%);
  background: rgba(42,35,24,.92); color: #F7F1E0;
  padding: 10px 20px; border-radius: 99px; font-size: 13px;
  z-index: 10000; pointer-events: none; white-space: nowrap;
  opacity: 0; transition: opacity .25s;
}
.admin-toast.show { opacity: 1; }

/* 隐藏工具类 */
.admin-hide { display: none !important; }