:root{
  --bg:#f4f3ee; --bg-soft:#faf9f5; --card:#ffffff;
  --border:#ece9e1; --border-soft:#f1efe8;
  --text:#322f2a; --text-2:#6b665e; --text-3:#9c978d;
  --accent:#6f8f76; --accent-strong:#5c7c63; --accent-soft:#e9f0eb;
  --danger:#c2685c; --danger-soft:#f7ebe9;
  --warn:#bf9540; --info:#5e7a99;
  --shadow:0 1px 2px rgba(50,45,30,.04), 0 10px 28px rgba(50,45,30,.05);
  --shadow-sm:0 1px 2px rgba(50,45,30,.05);
  --r:16px; --r-sm:10px;
  --ff:"Inter","SF Pro Text",system-ui,-apple-system,"Segoe UI",Roboto,"Microsoft YaHei","PingFang SC",sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{font-family:var(--ff);background:var(--bg);color:var(--text);font-size:14.5px;line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:var(--accent-strong);text-decoration:none}
h1,h2,h3,h4{margin:0;font-weight:650;letter-spacing:-.01em}
.muted{color:var(--text-2)}
.dim{color:var(--text-3)}
.small{font-size:12.5px}
.mono{font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace}

/* layout */
#app{min-height:100%}
.shell{display:flex;min-height:100vh}
.sidebar{width:236px;flex:none;background:var(--bg-soft);border-right:1px solid var(--border);padding:20px 14px;position:sticky;top:0;height:100vh;display:flex;flex-direction:column;gap:4px}
.brand{display:flex;align-items:center;gap:10px;padding:6px 10px 18px;font-weight:750;font-size:17px;letter-spacing:-.02em}
.brand .logo{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--accent),var(--accent-strong));display:grid;place-items:center;color:#fff;font-size:16px;box-shadow:var(--shadow-sm)}
.nav-group{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--text-3);padding:14px 12px 6px}
.nav-item{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:10px;color:var(--text-2);cursor:pointer;font-weight:550;transition:.15s}
.nav-item:hover{background:#fff;color:var(--text)}
.nav-item.active{background:var(--accent-soft);color:var(--accent-strong)}
.nav-item .ic{width:18px;text-align:center;opacity:.85}
.sidebar .spacer{flex:1}
.main{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{height:60px;display:flex;align-items:center;justify-content:space-between;padding:0 26px;border-bottom:1px solid var(--border);background:rgba(250,249,245,.8);backdrop-filter:blur(6px);position:sticky;top:0;z-index:5}
.content{padding:26px;max-width:1080px;width:100%;margin:0 auto}
.page-title{font-size:21px;margin-bottom:4px}
.page-sub{color:var(--text-2);margin-bottom:22px}

/* cards */
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--r);box-shadow:var(--shadow);padding:20px}
.card.flat{box-shadow:none}
.card-h{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.card-h h3{font-size:15.5px}
.grid{display:grid;gap:16px}
.cols-2{grid-template-columns:repeat(2,1fr)}
.cols-3{grid-template-columns:repeat(3,1fr)}
.cols-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:880px){.cols-3,.cols-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.cols-2,.cols-3,.cols-4{grid-template-columns:1fr}}

/* stat tiles */
.stat{display:flex;flex-direction:column;gap:6px}
.stat .label{color:var(--text-2);font-size:12.5px;font-weight:550}
.stat .value{font-size:25px;font-weight:720;letter-spacing:-.02em}
.stat .sub{font-size:12px;color:var(--text-3)}
.tile-ic{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent-strong);font-size:16px;margin-bottom:2px}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:7px;justify-content:center;padding:9px 16px;border-radius:10px;border:1px solid var(--border);background:#fff;color:var(--text);font-weight:600;font-size:14px;cursor:pointer;transition:.15s;font-family:inherit}
.btn:hover{border-color:#ddd9cf;background:var(--bg-soft)}
.btn:active{transform:translateY(1px)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.primary:hover{background:var(--accent-strong);border-color:var(--accent-strong)}
.btn.danger{color:var(--danger);border-color:var(--danger-soft);background:var(--danger-soft)}
.btn.danger:hover{background:#f2ddd9}
.btn.ghost{border-color:transparent;background:transparent}
.btn.sm{padding:6px 11px;font-size:13px;border-radius:8px}
.btn.block{width:100%}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* forms */
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--text-2);margin-bottom:6px}
.input,select,textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:#fff;font-size:14px;color:var(--text);font-family:inherit;transition:.15s}
.input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
textarea{resize:vertical;min-height:84px}
.row{display:flex;gap:10px;flex-wrap:wrap}
.row>*{flex:1;min-width:0}

/* table */
.table{width:100%;border-collapse:collapse;font-size:13.5px}
.table th{text-align:left;color:var(--text-3);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.04em;padding:0 12px 10px;border-bottom:1px solid var(--border)}
.table td{padding:12px;border-bottom:1px solid var(--border-soft)}
.table tr:last-child td{border-bottom:none}
.table tr:hover td{background:var(--bg-soft)}

/* badges & chips */
.badge{display:inline-flex;align-items:center;gap:5px;padding:3px 9px;border-radius:20px;font-size:12px;font-weight:600;background:var(--bg);color:var(--text-2)}
.badge.green{background:var(--accent-soft);color:var(--accent-strong)}
.badge.red{background:var(--danger-soft);color:var(--danger)}
.badge.amber{background:#f7efda;color:var(--warn)}
.badge.blue{background:#e8eef5;color:var(--info)}
.chip{padding:5px 10px;border-radius:9px;border:1px solid var(--border);background:#fff;font-size:13px;cursor:pointer}
.chip.on{background:var(--accent-soft);border-color:var(--accent);color:var(--accent-strong);font-weight:600}

/* progress / ring */
.ring-wrap{display:flex;align-items:center;gap:18px}
.bar-track{height:8px;border-radius:6px;background:var(--bg);overflow:hidden}
.bar-fill{height:100%;border-radius:6px;background:linear-gradient(90deg,var(--accent),var(--accent-strong))}

/* auth */
.auth{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(1200px 500px at 50% -10%,#fff,transparent),var(--bg)}
.auth-card{width:100%;max-width:392px;background:var(--card);border:1px solid var(--border);border-radius:20px;box-shadow:var(--shadow);padding:30px 28px}
.auth-brand{display:flex;align-items:center;gap:11px;font-weight:750;font-size:20px;margin-bottom:4px;letter-spacing:-.02em}
.auth-tabs{display:flex;gap:4px;background:var(--bg);padding:4px;border-radius:11px;margin:18px 0 20px}
.auth-tabs button{flex:1;padding:8px;border:none;background:transparent;border-radius:8px;font-weight:600;color:var(--text-2);cursor:pointer;font-family:inherit;font-size:13.5px}
.auth-tabs button.on{background:#fff;color:var(--text);box-shadow:var(--shadow-sm)}

/* misc */
.copybox{display:flex;gap:8px;align-items:center;background:var(--bg);border:1px solid var(--border);border-radius:10px;padding:8px 10px}
.copybox code{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12.5px;color:var(--text-2)}
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:#322f2a;color:#fff;padding:11px 18px;border-radius:11px;font-size:13.5px;box-shadow:var(--shadow);z-index:50;animation:pop .2s}
.toast.err{background:var(--danger)}
@keyframes pop{from{opacity:0;transform:translate(-50%,8px)}}
.modal-mask{position:fixed;inset:0;background:rgba(40,36,28,.32);display:grid;place-items:center;padding:20px;z-index:40;backdrop-filter:blur(2px)}
.modal{background:#fff;border-radius:18px;box-shadow:var(--shadow);width:100%;max-width:480px;padding:24px;max-height:88vh;overflow:auto}
.modal h3{margin-bottom:16px}
.empty{text-align:center;padding:40px 20px;color:var(--text-3)}
.divider{height:1px;background:var(--border);margin:16px 0}
.flex{display:flex;align-items:center;gap:10px}
.between{display:flex;align-items:center;justify-content:space-between;gap:10px}
.wrap{flex-wrap:wrap}
.mt{margin-top:14px}.mb{margin-bottom:14px}
.spin{display:inline-block;width:16px;height:16px;border:2px solid var(--accent-soft);border-top-color:var(--accent);border-radius:50%;animation:sp .7s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
.center{display:grid;place-items:center;min-height:60vh}

/* mobile sidebar -> top */
@media(max-width:780px){
  .shell{flex-direction:column}
  .sidebar{width:100%;height:auto;position:sticky;top:0;flex-direction:row;align-items:center;gap:6px;overflow-x:auto;padding:10px 12px;z-index:10}
  .brand{padding:0 8px 0 4px;font-size:15px}
  .nav-group{display:none}
  .nav-item{padding:7px 11px;white-space:nowrap;font-size:13px}
  .sidebar .spacer{display:none}
  .content{padding:18px 14px}
}