/* ================= 基础变量 ================= */
:root{
  --brand:#2563eb;
  --brand-dark:#1d4ed8;
  --brand-soft:#eff4ff;
  --success:#059669;
  --success-soft:#ecfdf5;
  --danger:#dc2626;
  --danger-soft:#fef2f2;
  --warn:#d97706;
  --bg:#f5f7fb;
  --surface:#ffffff;
  --text:#0f172a;
  --text-2:#475569;
  --text-3:#94a3b8;
  --line:#e2e8f0;
  --line-2:#cbd5e1;
  --radius:12px;
  --radius-sm:8px;
  --shadow-sm:0 1px 2px rgba(15,23,42,.06);
  --shadow:0 4px 16px rgba(15,23,42,.08);
  --shadow-lg:0 12px 40px rgba(15,23,42,.14);
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:15px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  padding-bottom:env(safe-area-inset-bottom);
}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9em}
h1,h2,h3{margin:0;line-height:1.3}
.muted{color:var(--text-3);font-size:13px;margin:6px 0 0}
[hidden]{display:none !important}

/* ================= 顶部导航 ================= */
.topbar{
  background:var(--surface);
  border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:50;
}
.topbar-inner{
  max-width:1280px;margin:0 auto;padding:10px 20px;
  display:flex;align-items:center;gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;cursor:pointer;flex-shrink:0}
.brand-logo{
  width:36px;height:36px;border-radius:9px;
  background:linear-gradient(135deg,var(--brand),#60a5fa);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:17px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-weight:650;font-size:15px}
.brand-sub{font-size:11px;color:var(--text-3)}
.topnav{display:flex;gap:4px;margin-left:auto}
.nav-btn{
  padding:7px 14px;border-radius:var(--radius-sm);
  font-size:14px;color:var(--text-2);font-weight:500;
  transition:.15s;
}
.nav-btn:hover{background:var(--bg);color:var(--text)}
.nav-btn.active{background:var(--brand-soft);color:var(--brand)}
.topbar-right{display:flex;align-items:center;gap:10px;flex-shrink:0}
.avatar{
  width:32px;height:32px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-weight:650;font-size:13px;cursor:pointer;
}
.user-chip{
  display:flex;align-items:center;gap:8px;padding:3px 10px 3px 3px;
  border-radius:20px;background:var(--bg);cursor:pointer;
  border:1px solid var(--line);
}
.user-chip .avatar{width:26px;height:26px;font-size:11px}
.chip-name{font-size:13px;font-weight:500}
.tag-vip{
  background:linear-gradient(135deg,#f59e0b,#f97316);
  color:#fff;font-size:10px;font-weight:700;
  padding:2px 7px;border-radius:10px;letter-spacing:.3px;
}

/* ================= 按钮 ================= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:9px 18px;border-radius:var(--radius-sm);
  font-weight:550;font-size:14px;transition:.15s;
  border:1px solid transparent;white-space:nowrap;
}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:not(:disabled):hover{background:var(--brand-dark)}
.btn-outline{border-color:var(--line-2);background:var(--surface);color:var(--text)}
.btn-outline:not(:disabled):hover{border-color:var(--brand);color:var(--brand)}
.btn-ghost{color:var(--text-2)}
.btn-ghost:not(:disabled):hover{background:var(--bg)}
.btn-success{background:var(--success);color:#fff}
.btn-success:not(:disabled):hover{background:#047857}
.btn-wechat{background:#07c160;color:#fff;width:100%}
.btn-wechat:not(:disabled):hover{background:#06ad56}
.btn-block{width:100%}
.btn-sm{padding:6px 12px;font-size:13px}
.btn-danger-ghost{color:var(--danger);border:1px solid var(--line)}
.btn-danger-ghost:hover{background:var(--danger-soft);border-color:var(--danger)}
.link{color:var(--brand);font-weight:500;font-size:13px;text-decoration:none}
.link:hover{text-decoration:underline}
.btn-code{
  padding:0 14px;height:42px;border-radius:var(--radius-sm);
  border:1px solid var(--line-2);background:var(--surface);
  color:var(--brand);font-weight:550;font-size:13px;flex-shrink:0;white-space:nowrap;
}
.btn-code:disabled{color:var(--text-3);background:var(--bg);cursor:not-allowed}
.btn-code.btn-text{border:none;color:var(--text-2)}

/* ================= 登录注册 ================= */
.auth-wrap{
  max-width:940px;margin:28px auto;padding:0 20px;
  display:flex;justify-content:center;
}
.auth-card{
  background:var(--surface);border-radius:18px;box-shadow:var(--shadow-lg);
  overflow:hidden;display:grid;grid-template-columns:1fr 1.15fr;width:100%;
}
.auth-hero{
  background:linear-gradient(150deg,#1e40af,#3b82f6 60%,#60a5fa);
  color:#fff;padding:44px 36px;display:flex;flex-direction:column;justify-content:center;
}
.auth-hero h1{font-size:26px;margin-bottom:12px;letter-spacing:-.3px}
.auth-hero>p{color:#dbeafe;font-size:14px;margin:0 0 26px}
.hero-points{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px}
.hero-points li{
  font-size:13.5px;color:#eff6ff;display:flex;align-items:flex-start;gap:9px;
}
.hero-points li::before{content:"✓";font-weight:700;color:#bfdbfe;flex-shrink:0}
.auth-form{padding:36px}
.tabs{display:flex;gap:4px;background:var(--bg);padding:4px;border-radius:10px;margin-bottom:22px}
.tab{
  flex:1;padding:9px;border-radius:7px;font-weight:550;font-size:14px;
  color:var(--text-2);transition:.15s;
}
.tab.active{background:var(--surface);color:var(--brand);box-shadow:var(--shadow-sm)}
.divider{
  display:flex;align-items:center;gap:12px;
  color:var(--text-3);font-size:12px;margin:20px 0;
}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:var(--line)}
.wechat-entry{margin-bottom:4px}
.auth-mode{display:flex;flex-direction:column;gap:14px}
.field{display:flex;flex-direction:column;gap:6px}
.field-label{font-size:13px;font-weight:550;color:var(--text-2)}
.field-label .opt{color:var(--text-3);font-weight:400;font-size:12px;margin-left:4px}
.field-row{display:flex;gap:10px;align-items:center}
.field-row input{flex:1;min-width:0}
.field input,.sheet-name,.admin-search input{
  width:100%;padding:10px 13px;border:1px solid var(--line-2);
  border-radius:var(--radius-sm);background:var(--surface);
  font-size:14px;transition:.15s;outline:none;
}
.field input:focus,.sheet-name:focus,.admin-search input:focus{
  border-color:var(--brand);box-shadow:0 0 0 3px rgba(37,99,235,.1);
}
.field input::placeholder{color:var(--text-3)}
.field-err{font-size:12px;color:var(--danger);min-height:0}
.field-err:empty{display:none}
.check{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);cursor:pointer}
.check input{width:15px;height:15px;accent-color:var(--brand);cursor:pointer}
.auth-tip{font-size:12px;color:var(--text-3);margin:0;line-height:1.5}
.switch-line{
  margin-top:20px;padding-top:18px;border-top:1px solid var(--line);
  text-align:center;font-size:13px;color:var(--text-2);
}
.switch-line .link{margin-left:6px}
.auth-error{
  margin-top:14px;padding:10px 13px;border-radius:var(--radius-sm);
  background:var(--danger-soft);color:var(--danger);font-size:13px;
}

/* ================= 主区域 ================= */
.main{max-width:1280px;margin:0 auto;padding:24px 20px 40px}
.page{display:block}

/* 额度条 */
.quota-bar{
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:14px 18px;margin-bottom:18px;box-shadow:var(--shadow-sm);
}
.quota-info{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.quota-label{font-size:14px;font-weight:550}
.quota-bar.vip{border-color:#fcd34d;background:linear-gradient(90deg,#fffbeb,var(--surface))}
.quota-pill{
  background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600;
  padding:3px 10px;border-radius:12px;
}
.quota-pill.vip{background:linear-gradient(135deg,#f59e0b,#f97316);color:#fff}
.quota-bar.exhausted{border-color:#fecaca;background:var(--danger-soft)}

/* 上传区 */
.upload-zone{
  background:var(--surface);border:2px dashed var(--line-2);
  border-radius:16px;padding:48px 24px;text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:12px;
  transition:.2s;
}
.upload-zone:hover{border-color:var(--brand);background:#fcfdff}
.upload-zone.dragover{border-color:var(--brand);background:var(--brand-soft)}
.upload-icon{color:var(--brand);opacity:.85}
.upload-title{font-size:17px;font-weight:600}
.upload-sub{font-size:13px;color:var(--text-3);max-width:460px}
.upload-zone .btn{margin-top:6px}

/* 预览 */
.preview-wrap{
  background:var(--surface);border:1px solid var(--line);
  border-radius:16px;overflow:hidden;box-shadow:var(--shadow-sm);
}
.preview-head{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:14px 18px;border-bottom:1px solid var(--line);flex-wrap:wrap;
}
.preview-name{font-size:14px;font-weight:550;word-break:break-all}
.preview-actions{display:flex;gap:8px}
.preview-body{padding:18px;background:var(--bg);text-align:center;max-height:440px;overflow:auto}
.preview-body img{max-width:100%;border-radius:var(--radius-sm);box-shadow:var(--shadow)}

/* 进度 */
.progress-wrap{margin-bottom:18px}
.progress-card{
  background:var(--surface);border:1px solid var(--line);border-radius:16px;
  padding:36px;text-align:center;display:flex;flex-direction:column;
  align-items:center;gap:10px;box-shadow:var(--shadow-sm);
}
.spinner{
  width:36px;height:36px;border:3px solid var(--brand-soft);
  border-top-color:var(--brand);border-radius:50%;
  animation:spin .8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.progress-title{font-size:15px;font-weight:600}
.progress-sub{font-size:13px;color:var(--text-3)}

/* 历史 */
.history-wrap{margin-top:28px}
.sec-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.sec-head h2{font-size:16px}
.history-list{display:flex;flex-direction:column;gap:10px}
.history-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:14px 16px;display:flex;align-items:center;justify-content:space-between;
  gap:12px;cursor:pointer;transition:.15s;
}
.history-item:hover{border-color:var(--brand);box-shadow:var(--shadow-sm)}
.hi-main{flex:1;min-width:0}
.hi-name{font-size:14px;font-weight:550;word-break:break-all}
.hi-meta{font-size:12px;color:var(--text-3);margin-top:2px}
.empty{
  text-align:center;padding:36px 20px;color:var(--text-3);font-size:13px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
}

/* ================= 表格编辑器 ================= */
.editor-bar{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  flex-wrap:wrap;margin-bottom:12px;
}
.editor-left,.editor-right{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.ed-tools{display:flex;gap:4px}
.sheet-name{width:180px}
.editor-meta{
  font-size:12.5px;color:var(--text-3);margin-bottom:12px;
  display:flex;gap:16px;flex-wrap:wrap;
}
.table-scroll{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);overflow:auto;max-height:64vh;
  box-shadow:var(--shadow-sm);
}
.grid{border-collapse:separate;border-spacing:0;width:max-content;min-width:100%;font-size:13.5px}
.grid th,.grid td{
  border-right:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:0;min-width:110px;max-width:320px;
}
.grid thead th{
  position:sticky;top:0;z-index:2;background:#f8fafc;
  padding:9px 12px;font-weight:600;font-size:13px;text-align:left;
  border-bottom:1px solid var(--line-2);white-space:nowrap;
}
.grid tbody td{position:relative}
.grid td input,.grid td .cell-text{
  width:100%;padding:8px 12px;border:none;outline:none;
  background:transparent;font-size:13.5px;display:block;
  min-height:35px;
}
.grid td input:focus{background:var(--brand-soft);box-shadow:inset 0 0 0 2px var(--brand)}
.grid td .cell-text{white-space:pre-wrap;word-break:break-word;line-height:1.5;padding:8px 12px}
.grid tbody tr:nth-child(even) td{background:#fcfdff}
.grid tbody tr:nth-child(even) td input{background:transparent}
.grid .row-idx,.grid .col-idx{
  min-width:46px;width:46px;text-align:center;color:var(--text-3);
  background:#f8fafc;font-size:12px;padding:8px 4px;
  position:sticky;left:0;z-index:1;
}
.grid thead .col-idx{left:auto;z-index:3}
.grid .row-idx{z-index:2}
.editor-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:12px;font-size:12.5px;color:var(--text-3);flex-wrap:wrap;
}
.editor-foot .hint{font-size:12px}

/* ================= 个人中心 ================= */
.acct-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px;align-items:start}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);overflow:hidden}
.panel-head{padding:14px 18px;border-bottom:1px solid var(--line)}
.panel-head h3{font-size:15px}
.acct-form{padding:18px;display:flex;flex-direction:column;gap:14px}
.vip-card{padding:18px;display:flex;flex-direction:column;gap:14px}
.vip-badge{
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
  background:linear-gradient(135deg,#f59e0b,#f97316);color:#fff;
  font-size:12px;font-weight:700;padding:4px 12px;border-radius:12px;
}
.vip-badge.free{background:var(--bg);color:var(--text-2);border:1px solid var(--line)}
.vip-rows{display:flex;flex-direction:column;gap:10px}
.vip-row{display:flex;align-items:center;justify-content:space-between;font-size:13.5px}
.vip-row span:first-child{color:var(--text-2)}
.kv{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px}
.kv span:first-child{color:var(--text-3);flex-shrink:0}
.kv code{background:var(--bg);padding:2px 7px;border-radius:5px;word-break:break-all;text-align:right}

/* ================= 后台管理 ================= */
.admin-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:14px;
  flex-wrap:wrap;margin-bottom:16px;
}
.admin-head h2{font-size:19px}
.admin-search{display:flex;gap:8px}
.admin-search input{width:240px}
.stat-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-bottom:16px}
.stat-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px;box-shadow:var(--shadow-sm);
}
.stat-num{font-size:24px;font-weight:700;color:var(--brand);line-height:1.2}
.stat-label{font-size:12.5px;color:var(--text-3);margin-top:2px}
.admin-scroll{max-height:none}
.grid-admin{table-layout:fixed;min-width:1000px}
.grid-admin th,.grid-admin td{padding:10px 12px;text-align:left;font-size:13px;vertical-align:middle}
.grid-admin td{word-break:break-word}
.grid-admin .badge{
  display:inline-block;padding:2px 9px;border-radius:11px;
  font-size:11.5px;font-weight:600;white-space:nowrap;
}
.badge-vip{background:#fef3c7;color:#b45309}
.badge-free{background:var(--bg);color:var(--text-2)}
.badge-active{background:var(--success-soft);color:var(--success)}
.badge-banned{background:var(--danger-soft);color:var(--danger)}
.badge-admin{background:#ede9fe;color:#6d28d9}
.admin-actions{display:flex;gap:5px;flex-wrap:wrap}
.mini-btn{
  padding:4px 9px;border:1px solid var(--line-2);border-radius:6px;
  font-size:12px;color:var(--text-2);background:var(--surface);transition:.15s;white-space:nowrap;
}
.mini-btn:hover{border-color:var(--brand);color:var(--brand)}
.mini-btn.on{background:var(--success);border-color:var(--success);color:#fff}
.mini-btn.off{background:var(--danger-soft);border-color:#fecaca;color:var(--danger)}
.admin-foot{margin-top:14px;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--text-3)}

/* ================= 弹窗 ================= */
.modal{
  position:fixed;inset:0;background:rgba(15,23,42,.55);
  display:flex;align-items:center;justify-content:center;z-index:100;padding:20px;
  backdrop-filter:blur(2px);
}
.modal-card{
  background:var(--surface);border-radius:16px;padding:32px;
  max-width:400px;width:100%;position:relative;text-align:center;
  box-shadow:var(--shadow-lg);
}
.modal-x{
  position:absolute;top:12px;right:16px;font-size:24px;
  color:var(--text-3);line-height:1;
}
.modal-x:hover{color:var(--text)}
.modal-badge{
  display:inline-block;background:linear-gradient(135deg,#f59e0b,#f97316);
  color:#fff;font-size:12px;font-weight:700;padding:4px 14px;
  border-radius:14px;margin-bottom:14px;
}
.modal-card h3{font-size:20px;margin-bottom:8px}
.modal-price{display:flex;align-items:baseline;justify-content:center;gap:10px;margin:18px 0}
.modal-price .strike{font-size:20px;color:var(--text-3);text-decoration:line-through}
.modal-price .now{font-size:16px;color:var(--warn);font-weight:600}
.modal-feats{
  text-align:left;display:flex;flex-direction:column;gap:9px;
  margin-bottom:22px;font-size:13.5px;color:var(--text-2);
}

/* ================= Toast ================= */
.toast-wrap{
  position:fixed;top:70px;left:50%;transform:translateX(-50%);
  z-index:200;display:flex;flex-direction:column;gap:8px;
  align-items:center;pointer-events:none;width:max-content;max-width:90vw;
}
.toast{
  background:var(--text);color:#fff;padding:10px 18px;border-radius:20px;
  font-size:13.5px;box-shadow:var(--shadow-lg);animation:toastIn .22s ease;
}
.toast.ok{background:var(--success)}
.toast.err{background:var(--danger)}
@keyframes toastIn{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:none}}

/* ================= 页脚 ================= */
.footer{
  max-width:1280px;margin:0 auto;padding:22px 20px 30px;
  display:flex;align-items:center;justify-content:center;gap:8px;
  flex-wrap:wrap;font-size:12.5px;color:var(--text-3);
}
.footer .dot{opacity:.5}

/* ================= 手机适配 ================= */
@media (max-width:860px){
  .auth-card{grid-template-columns:1fr}
  .auth-hero{padding:30px 24px}
  .auth-hero h1{font-size:22px}
  .hero-points{gap:9px}
  .auth-form{padding:26px 22px}
}

@media (max-width:640px){
  body{font-size:14.5px}
  .topbar-inner{padding:9px 14px;gap:10px}
  .brand-text{display:none}
  .topnav{margin-left:0;order:3;width:100%;overflow-x:auto;padding-top:2px}
  .topbar-inner{flex-wrap:wrap}
  .topnav::-webkit-scrollbar{display:none}
  .nav-btn{padding:6px 11px;font-size:13px;white-space:nowrap}
  .chip-name{display:none}
  .main{padding:16px 14px 32px}
  .auth-wrap{margin:16px auto;padding:0 14px}
  .upload-zone{padding:32px 18px}
  .upload-title{font-size:15.5px}
  .upload-sub{font-size:12.5px}
  .preview-body{padding:12px}
  .progress-card{padding:28px 20px}
  .table-scroll{max-height:none;border-radius:var(--radius-sm)}
  .grid th,.grid td{min-width:96px}
  .editor-bar{gap:10px}
  .editor-left,.editor-right{width:100%;justify-content:space-between}
  .sheet-name{width:130px}
  .editor-foot{flex-direction:column;align-items:flex-start;gap:4px}
  .acct-grid{grid-template-columns:1fr}
  .admin-search{width:100%}
  .admin-search input{width:100%;flex:1}
  .stat-row{grid-template-columns:repeat(2,1fr)}
  .stat-num{font-size:20px}
  .toast-wrap{top:auto;bottom:20px}
  .footer{padding:18px 14px 26px;font-size:12px}
  .history-item{padding:12px 14px}
  .acct-form,.vip-card{padding:16px}
}

@media (max-width:380px){
  .main{padding:14px 11px 28px}
  .brand-logo{width:32px;height:32px;font-size:15px}
  .btn{padding:9px 14px;font-size:13.5px}
  .stat-row{grid-template-columns:1fr 1fr;gap:9px}
}