:root{
  --bg:#f4f6fb;
  --sidebar:#1f2a44;
  --sidebar-hover:#2c3a5e;
  --sidebar-active:#3b82f6;
  --card:#ffffff;
  --text:#1f2937;
  --muted:#6b7280;
  --border:#e5e7eb;
  --primary:#3b82f6;
  --primary-dark:#2563eb;
  --danger:#ef4444;
  --blue:#2563eb;   /* 7天内 */
  --yellow:#d97706; /* 3天内 */
  --red:#dc2626;    /* 过期 */
}

*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);font-size:14px;line-height:1.5}

/* ===== 登录页 ===== */
.login-view{height:100vh;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#1f2a44 0%,#3b82f6 100%)}
.login-card{background:#fff;border-radius:16px;padding:40px 36px;width:340px;
  box-shadow:0 20px 50px rgba(0,0,0,.25);text-align:center}
.login-logo{font-size:46px;margin-bottom:8px}
.login-card h1{font-size:22px;margin-bottom:4px}
.login-sub{color:var(--muted);margin-bottom:24px}
.login-card label{display:block;text-align:left;font-size:13px;color:var(--muted);margin-bottom:14px}
.login-card input{width:100%;margin-top:6px;padding:11px 12px;border:1px solid var(--border);
  border-radius:9px;font-size:14px;outline:none;transition:border .2s}
.login-card input:focus{border-color:var(--primary)}
.login-error{color:var(--danger);font-size:12px;min-height:16px;margin-bottom:8px}
.login-hint{margin-top:16px;font-size:12px;color:var(--muted)}

/* ===== 按钮 ===== */
.btn-primary{background:var(--primary);color:#fff;border:none;border-radius:9px;
  padding:10px 18px;font-size:14px;cursor:pointer;transition:background .2s;font-weight:500}
.btn-primary:hover{background:var(--primary-dark)}
/* 顶栏「增加」主按钮：保留突出身份，增加精致感与按压反馈 */
#add-btn{display:inline-flex;align-items:center;gap:5px;font-weight:600;
  box-shadow:0 2px 6px rgba(59,130,246,.32);transition:background .2s,box-shadow .2s,transform .08s}
#add-btn::before{content:"+";font-size:16px;line-height:1;font-weight:700;margin-top:-1px}
#add-btn:hover{box-shadow:0 4px 12px rgba(59,130,246,.42)}
#add-btn:active{transform:translateY(1px);box-shadow:0 1px 4px rgba(59,130,246,.3)}
.btn-ghost{background:#fff;color:var(--text);border:1px solid var(--border);border-radius:9px;
  padding:10px 18px;font-size:14px;cursor:pointer}
.btn-ghost:hover{background:#f3f4f6}
.btn-side{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.2);
  border-radius:9px;padding:9px 14px;cursor:pointer;width:100%;font-size:13px;transition:background .2s}
.btn-side:hover{background:rgba(255,255,255,.22)}
.btn-logout{background:rgba(239,68,68,.18);color:#fecaca;border:1px solid rgba(239,68,68,.35);
  border-radius:9px;padding:9px 14px;cursor:pointer;width:100%;font-size:13px;transition:background .2s}
.btn-logout:hover{background:rgba(239,68,68,.3);color:#fff}
.btn-sm{padding:5px 11px;font-size:12px;border-radius:7px;border:1px solid var(--border);
  background:#fff;cursor:pointer;margin-right:6px;transition:all .15s}
.btn-sm:hover{background:#eef2ff;border-color:var(--primary);color:var(--primary)}
.btn-danger{color:var(--danger);border-color:#fecaca}
.btn-danger:hover{background:#fef2f2;border-color:var(--danger);color:var(--danger)}
.btn-login{color:var(--primary);border-color:#bfdbfe}
.btn-login:hover{background:#eff6ff;border-color:var(--primary)}

/* ===== 应用布局 ===== */
.app-view{display:flex;height:100vh}
.sidebar{width:220px;background:var(--sidebar);color:#fff;display:flex;flex-direction:column;padding:18px 14px}
.sidebar-brand{font-size:18px;font-weight:600;padding:6px 8px 18px}
.sidebar-nav{display:flex;flex-direction:column;gap:6px;flex:1}
.nav-item{background:transparent;border:none;color:#cbd5e1;text-align:left;padding:12px 14px;
  border-radius:10px;cursor:pointer;font-size:14px;transition:background .2s}
.nav-item:hover{background:var(--sidebar-hover)}
.nav-item.active{background:var(--sidebar-active);color:#fff;font-weight:500}
.sidebar-footer{margin-top:auto;padding-top:14px;display:flex;flex-direction:column;gap:8px}

.content{flex:1;display:flex;flex-direction:column;overflow:hidden}
.topbar{display:flex;align-items:center;justify-content:space-between;
  padding:18px 26px;background:#fff;border-bottom:1px solid var(--border)}
.topbar h2{font-size:18px}
.view-content{padding:22px 26px;overflow:auto;flex:1}

/* 存储模式提示 */
.banner{padding:9px 26px;font-size:12px;border-bottom:1px solid var(--border)}
.banner-ok{background:#ecfdf5;color:#047857}
.banner-warn{background:#fffbeb;color:#b45309}
.banner-error{background:#fef2f2;color:#b91c1c;font-weight:600}

/* ===== 表格 ===== */
.table{width:100%;border-collapse:collapse;background:#fff;border-radius:12px;overflow:hidden;
  box-shadow:0 1px 3px rgba(0,0,0,.06)}
.table th,.table td{padding:13px 14px;text-align:left;border-bottom:1px solid var(--border);vertical-align:middle}
.table th{background:#f9fafb;font-weight:600;color:#374151;font-size:13px;white-space:nowrap}
.table tr:last-child td{border-bottom:none}
.table tbody tr:hover{background:#f9fbff}
.table .actions{white-space:nowrap}
.pw{font-family:Consolas,Menlo,monospace;background:#f3f4f6;padding:2px 6px;border-radius:5px;font-size:12px}

/* 到期颜色规则 */
.exp-expired{color:var(--red);font-weight:600}
.exp-warn{color:var(--yellow);font-weight:600}
.exp-near{color:var(--blue);font-weight:600}
.exp-ok{color:var(--text)}
.exp-expired small,.exp-warn small,.exp-near small{font-weight:400;font-size:11px;opacity:.8}

.empty{padding:60px;text-align:center;color:var(--muted);background:#fff;border-radius:12px;
  box-shadow:0 1px 3px rgba(0,0,0,.06)}

/* ===== 弹窗 ===== */
.modal{position:fixed;inset:0;background:rgba(15,23,42,.5);display:flex;
  align-items:center;justify-content:center;z-index:50}
.modal-card{background:#fff;border-radius:14px;padding:26px;width:400px;max-width:92vw;
  box-shadow:0 20px 50px rgba(0,0,0,.3)}
.modal-card h3{font-size:18px;margin-bottom:18px}
.modal-hint{font-size:12px;color:var(--muted);line-height:1.7;margin:-8px 0 16px;
  background:#f8fafc;border:1px solid var(--border);border-radius:9px;padding:10px 12px}
.modal-hint code{font-family:Consolas,Menlo,monospace;background:#eef2ff;color:#3730a3;
  padding:1px 6px;border-radius:5px;font-size:11px}
.modal-card label{display:block;font-size:13px;color:var(--muted);margin-bottom:14px}
.modal-card input,.modal-card select{width:100%;margin-top:6px;padding:10px 12px;
  border:1px solid var(--border);border-radius:9px;font-size:14px;outline:none;background:#fff}
.modal-card input:focus,.modal-card select:focus{border-color:var(--primary)}
.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:8px}

/* ===== 移动端自适应 ===== */
@media (max-width:768px){
  /* 侧边栏变顶部横向导航 */
  .app-view{flex-direction:column;height:auto;min-height:100vh}
  .sidebar{width:100%;flex-direction:row;align-items:center;padding:10px 12px;gap:10px;
    overflow-x:auto}
  .sidebar-brand{display:none}
  .sidebar-nav{flex-direction:row;gap:8px;flex:1}
  .nav-item{padding:9px 12px;font-size:13px;white-space:nowrap}
  .sidebar-footer{margin-top:0;padding-top:0;flex-direction:row;flex:0 0 auto}
  .btn-side,.btn-logout{width:auto;padding:8px 12px}

  /* 顶栏紧凑 */
  .topbar{padding:12px 14px}
  .topbar h2{font-size:16px}
  .btn-primary{padding:8px 14px;font-size:13px}

  /* 内容区 */
  .view-content{padding:14px;overflow-x:hidden}

  /* 表格横向滚动，避免挤压 */
  .table-wrap{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}
  .table{min-width:680px}
  .table th,.table td{padding:10px 10px;font-size:12px}

  /* 弹窗明确占满（移动端），避免 width:auto 在 flex 下被压窄 */
  .modal-card{width:calc(100vw - 24px);max-width:calc(100vw - 24px);margin:12px}
  .modal-card label{margin-bottom:10px}
  .modal-actions{flex-wrap:wrap}
  .modal-actions button{flex:1;min-width:120px}

  /* 横幅字号 */
  .banner{font-size:11px;padding:8px 14px}
}

/* ===== 工具栏（搜索 + 每页条数） ===== */
.toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px;flex-wrap:wrap}
.search-box{position:relative;flex:1;min-width:220px;max-width:460px}
.search-box .search-icon{position:absolute;left:12px;top:50%;transform:translateY(-50%);font-size:14px;opacity:.6}
.search-box input{width:100%;padding:10px 12px 10px 36px;border:1px solid var(--border);
  border-radius:10px;font-size:14px;outline:none;background:#fff;transition:border .2s,box-shadow .2s}
.search-box input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(59,130,246,.12)}
.page-size{display:flex;align-items:center;color:var(--muted);font-size:13px;gap:6px;white-space:nowrap}
.page-size select{padding:8px 10px;border:1px solid var(--border);border-radius:8px;
  font-size:13px;background:#fff;outline:none;margin-left:4px;cursor:pointer}

/* 分页 */
.pager{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px;flex-wrap:wrap}
.pager-info{color:var(--muted);font-size:13px}
.pager-btns{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.pager-btns .btn-sm{min-width:34px;text-align:center;margin:0}
.pager-btns .btn-sm[disabled]{opacity:.45;cursor:not-allowed}
.pager-cur{background:var(--primary);color:#fff;border-color:var(--primary)}
.pager-cur:hover{background:var(--primary);color:#fff}
.pager-gap{padding:0 4px;color:var(--muted)}

@media (max-width:480px){
  .toolbar{gap:8px}
  .search-box{max-width:none}
  .page-size{font-size:12px}
  .pager-info{font-size:12px;width:100%;margin-bottom:6px}
}

@media (max-width:480px){
  .nav-item{font-size:12px;padding:8px 10px}
  .topbar{padding:10px 12px}
  .topbar h2{font-size:15px}
  .table{min-width:600px}
}

/* 轻量提示 toast */
.toast{position:fixed;left:50%;bottom:32px;transform:translateX(-50%) translateY(20px);
  background:rgba(20,24,36,.92);color:#fff;padding:11px 16px;border-radius:9px;font-size:13px;
  max-width:82vw;word-break:break-all;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:9999}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}