:root{
  --bg:#eef2f9;
  --panel:#ffffff;
  --line:#e2e8f4;
  --text:#101828;
  --muted:#66738a;
  --blue:#2563eb;
  --blue-dark:#1746a2;
  --navy:#0b2a5b;
  --teal:#2dd4bf;
  --soft:#f5f8fd;
  --green:#0f9d63;
  --green-bg:#e8f9f2;
  --red:#dc2626;
  --red-bg:#fef1f1;
  --shadow:0 16px 40px rgba(15,35,75,.08);
  --shadow-sm:0 6px 16px rgba(15,35,75,.06);
  --radius:16px;
  --radius-sm:10px;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",Arial,sans-serif;color:var(--text);font-size:14.5px;letter-spacing:0}
a{text-decoration:none;color:inherit}
svg{display:block}

/* ---- shell layout ---- */
.shell{min-height:100vh;display:grid;grid-template-columns:240px 1fr;gap:14px;padding:12px}
.side{height:calc(100vh - 24px);position:sticky;top:12px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px 14px;box-shadow:var(--shadow);display:flex;flex-direction:column}
.brand{display:flex;align-items:center;gap:12px;margin:0 8px 26px}
.logo{width:46px;height:46px;border-radius:13px;background:#fff;border:1px solid #e5edfa;display:grid;place-items:center;overflow:hidden;box-shadow:0 6px 16px rgba(37,99,235,.18);flex:0 0 46px}
.logo img{width:40px;height:40px;object-fit:contain;display:block}
.brand h1{font-size:16.5px;line-height:1.3;margin:0;font-weight:800;color:var(--text)}
.brand h1 span{display:block;white-space:nowrap}
.brand h1 span+span{font-size:13px;font-weight:600;color:var(--muted);margin-top:2px}
.brand p{display:none}

/* ---- nav ---- */
.nav{overflow:auto;padding-right:2px;display:flex;flex-direction:column;gap:4px}
.nav a{display:flex;align-items:flex-start;gap:11px;border:1px solid transparent;border-radius:var(--radius-sm);padding:11px 12px;position:relative;transition:background .12s ease}
.nav a:hover{background:var(--soft)}
.nav a .nav-icon{flex:0 0 20px;width:20px;height:20px;margin-top:2px;color:var(--muted)}
.nav a .nav-text{display:flex;flex-direction:column;min-width:0}
.nav a strong{display:block;font-size:14.5px;font-weight:700;margin-bottom:3px;line-height:1.3;color:var(--text)}
.nav a span{display:block;color:#5b6b85;line-height:1.4;font-size:13px;font-weight:500}
.nav a.active{background:linear-gradient(135deg,#eef4ff,#f2fbfa);border-color:#d7e6fd}
.nav a.active .nav-icon{color:var(--blue)}
.nav a.active strong{color:var(--blue-dark)}
.nav a.active::before{content:"";position:absolute;left:-1px;top:12px;bottom:12px;width:3px;border-radius:3px;background:var(--teal)}
.logout{margin-top:auto;border-top:1px solid var(--line);padding-top:14px}
.logout button{width:100%}

/* ---- buttons ---- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid #d6e0f2;background:#fff;border-radius:var(--radius-sm);height:40px;padding:0 16px;font-weight:700;font-size:13.5px;color:#334262;cursor:pointer;transition:all .12s ease;white-space:nowrap}
.btn:hover{border-color:#b7cbf2;background:var(--soft)}
.btn.primary{background:linear-gradient(135deg,var(--blue),var(--blue-dark));border-color:var(--blue-dark);color:#fff;box-shadow:0 8px 18px rgba(37,99,235,.28)}
.btn.primary:hover{filter:brightness(1.05)}
.btn.bad{border-color:#f3c6c6;color:var(--red);background:#fff}
.btn.bad:hover{background:var(--red-bg);border-color:#eba3a3}
.btn.small{height:32px;padding:0 12px;border-radius:8px;font-size:12.5px}
.row-actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.copy-btn{height:28px;border-radius:8px;border:1px solid #d6e0f2;background:#fff;color:var(--blue);font-weight:800;font-size:12.5px;padding:0 10px;cursor:pointer}
.copy-btn:hover{background:var(--soft)}

/* ---- top bar ---- */
.main{padding-right:0}
.top{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px 26px;display:flex;align-items:center;justify-content:space-between;box-shadow:var(--shadow);margin-bottom:18px}
.top h2{font-size:24px;margin:0 0 4px;font-weight:800}
.top p{margin:0;color:var(--muted);font-size:14px}
.sync{color:var(--muted);display:flex;align-items:center;gap:12px;font-size:13.5px}

/* ---- stat cards ---- */
.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:18px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:20px;display:flex;flex-direction:column;gap:10px}
.card-icon{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;background:#eaf1ff;color:var(--blue)}
.card-icon.teal{background:#e6faf7;color:#0d9488}
.card label{display:block;color:var(--muted);font-weight:700;font-size:13px}
.card b{display:block;font-size:30px;font-weight:800;line-height:1.1}
.card p{margin:0;color:#9aa6ba;font-size:12.5px}

/* ---- panels ---- */
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:18px 20px;margin-bottom:16px;overflow-x:auto}
.panel h3{font-size:18px;margin:0 0 16px;font-weight:800}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.panel-head h3{margin:0}

/* ---- table ---- */
.table{width:100%;border-collapse:collapse}
.table th{background:var(--soft);color:#4a5674;text-align:left;font-weight:800;font-size:11.5px;text-transform:uppercase;letter-spacing:.02em;padding:9px 9px;white-space:nowrap}
.table th:first-child{border-top-left-radius:10px;border-bottom-left-radius:10px}
.table th:last-child{border-top-right-radius:10px;border-bottom-right-radius:10px}
.table td{border-bottom:1px solid #eef1f8;padding:8px 9px;vertical-align:middle;font-size:12.5px;white-space:nowrap}
.table td.wrap{white-space:normal;max-width:340px}
.table td.wrap-date{white-space:normal;max-width:100px}
.table tbody tr:hover td{background:#fafcff}
.table tbody tr:last-child td{border-bottom:none}

.badge{display:inline-flex;align-items:center;border-radius:999px;padding:4px 11px;background:var(--green-bg);color:var(--green);font-weight:800;font-size:12px;white-space:nowrap}
.badge.gray{background:#f0f2f7;color:#6b7690}
.badge.red{background:var(--red-bg);color:var(--red)}
.muted{color:var(--muted)}
.mono{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;background:var(--soft);border-radius:7px;padding:3px 7px;font-size:12.5px}
.mono.truncate{display:inline-block;max-width:260px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;vertical-align:bottom;cursor:help}
.cell-stack{display:flex;flex-direction:column;gap:3px;line-height:1.35}
.cell-stack .sub{font-size:11.5px;color:var(--muted);font-weight:600}
.cell-stack .sub.mono{background:none;padding:0}
.code-cell{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.row-check{width:16px;height:16px}

/* ---- empty state ---- */
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:48px 20px;color:var(--muted);text-align:center}
.empty-state svg{color:#c7d2e6}
.empty-state span{font-size:13.5px}

/* ---- forms ---- */
.form-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-weight:700;color:#4a5870;font-size:13px}
.field input,.field select,.field textarea{width:100%;border:1px solid #d9e2f2;border-radius:var(--radius-sm);background:#fff;min-height:40px;padding:9px 12px;font:inherit;transition:border-color .12s ease}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(37,99,235,.12)}
.field textarea{min-height:84px;resize:vertical}
.field.wide{grid-column:1 / -1}
.checkbox-grid{border:1px solid #d9e2f2;border-radius:var(--radius-sm);background:#fff;max-height:220px;overflow:auto;padding:6px}
.checkbox-item{display:flex;align-items:center;gap:9px;padding:9px 10px;border-radius:8px;cursor:pointer;font-size:13.5px}
.checkbox-item:hover{background:var(--soft)}
.checkbox-item input{width:16px;height:16px;flex:0 0 16px;accent-color:var(--blue)}
.checkbox-item.select-all{border-bottom:1px solid #eef1f8;border-radius:0;margin-bottom:4px;font-weight:700;color:var(--blue-dark)}
.duration-field{min-width:0;margin:0;padding:0;border:0}
.duration-field legend{margin:0 0 8px;padding:0;font-weight:700;color:#4a5870;font-size:13px}
.duration-field>.muted{display:block;margin:8px 0 0;font-size:12px;line-height:1.6}
.duration-options{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:9px}
.duration-option{position:relative;min-width:0;cursor:pointer}
.duration-option input{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}
.duration-option span{display:flex;min-height:66px;flex-direction:column;align-items:center;justify-content:center;gap:5px;padding:9px;border:1px solid #d9e2f2;border-radius:10px;background:#fff;color:#4a5870;text-align:center;transition:all .12s ease}
.duration-option strong{font-size:13px;color:var(--text)}
.duration-option small{font-size:11px;color:var(--muted)}
.duration-option input:checked+span{border-color:var(--blue);background:#eef4ff;box-shadow:0 0 0 3px rgba(37,99,235,.12)}
.duration-option input:checked+span strong{color:var(--blue-dark)}
.duration-option input:focus-visible+span{outline:2px solid var(--blue);outline-offset:2px}
.actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:14px}
.inline-actions{margin-top:0}

.flash{border-radius:var(--radius-sm);padding:12px 16px;margin-bottom:16px;background:var(--green-bg);color:#0a7a52;font-weight:700;font-size:13.5px}
.flash.bad{background:var(--red-bg);color:#b42323}
.codebox{font-size:20px;font-weight:900;background:#eef4ff;border:1px dashed #a9c4f7;border-radius:var(--radius-sm);padding:16px;margin-bottom:16px;color:var(--blue-dark)}
.generated-line{font-size:15px;font-weight:700;margin-top:10px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}

/* ---- modal ---- */
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(11,20,40,.5);z-index:60;align-items:flex-start;justify-content:center;padding:5vh 20px;overflow-y:auto}
.modal-overlay.open{display:flex}
.modal-box{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);width:100%;max-width:880px;margin-bottom:5vh}
.modal-header{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;border-bottom:1px solid var(--line)}
.modal-header h3{margin:0;font-size:17px;font-weight:800}
.modal-close{width:32px;height:32px;flex:0 0 32px;border-radius:9px;border:1px solid var(--line);background:#fff;display:grid;place-items:center;cursor:pointer;color:var(--muted);font-size:18px;line-height:1}
.modal-close:hover{background:var(--soft);color:var(--text)}
.modal-body{padding:20px 22px}
.confirm-message{margin:0 0 20px;color:var(--text);font-size:14px;line-height:1.7}

/* ---- login ---- */
.login-wrap{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(1200px 600px at 20% 0%,#eaf1ff 0%,var(--bg) 55%),radial-gradient(900px 500px at 100% 100%,#e6faf7 0%,var(--bg) 55%)}
.login{width:min(420px,100%);background:#fff;border:1px solid var(--line);border-radius:20px;padding:32px;box-shadow:var(--shadow)}
.login .brand{margin:0 0 22px}
.login button{width:100%;margin-top:10px}

@media(max-width:1000px){
  .shell{grid-template-columns:1fr}
  .side{position:relative;height:auto}
  .grid,.form-grid{grid-template-columns:1fr}
  .top{align-items:flex-start;gap:12px;flex-direction:column}
  .table{font-size:13px}
}
@media(max-width:620px){.duration-options{grid-template-columns:repeat(2,minmax(0,1fr))}}