/* ============================================================
   布局：侧栏 + 顶栏 + 内容区
   ============================================================ */
#app{display:flex;min-height:100vh}

/* ---------- 侧栏 ---------- */
.sidebar{width:var(--sidebar-w);background:linear-gradient(180deg,#16262f,#0f1b22);color:#c9d6de;
  display:flex;flex-direction:column;position:fixed;top:0;bottom:0;left:0;z-index:100;transition:transform .25s}
.sidebar .brand{display:flex;align-items:center;gap:11px;padding:18px 16px;border-bottom:1px solid rgba(255,255,255,.07)}
.sidebar .logo{width:36px;height:36px;border-radius:9px;background:linear-gradient(135deg,var(--primary),var(--primary-light));
  display:flex;align-items:center;justify-content:center;font-size:19px;font-weight:800;color:#fff;flex-shrink:0}
.sidebar .bt b{display:block;font-size:15px;color:#fff;letter-spacing:.5px}
.sidebar .bt span{font-size:10.5px;color:#6b7f8c;letter-spacing:.3px}
.sidebar .nav{flex:1;overflow-y:auto;padding:10px 0}
.sidebar .nav::-webkit-scrollbar{width:5px}
.sidebar .nav::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:3px}
.nav-item{display:flex;align-items:center;gap:11px;padding:11px 18px;color:#a9bac5;font-size:14px;
  font-weight:600;border-left:3px solid transparent;transition:.16s;text-decoration:none}
.nav-item .ico{width:18px;text-align:center;font-size:15px;opacity:.75}
.nav-item:hover{background:rgba(255,255,255,.055);color:#fff}
.nav-item.active{background:linear-gradient(90deg,rgba(27,140,90,.26),transparent);
  color:#fff;border-left-color:var(--primary)}
.nav-item.active .ico{opacity:1;color:var(--primary-light)}
.sidebar .side-foot{padding:12px 18px;font-size:11.5px;color:#5b6f7c;border-top:1px solid rgba(255,255,255,.06)}

/* ---------- 内容区 ---------- */
.content-wrap{flex:1;margin-left:var(--sidebar-w);display:flex;flex-direction:column;min-width:0}
.topbar{height:var(--header-h);background:#fff;border-bottom:1px solid var(--border);display:flex;
  align-items:center;gap:14px;padding:0 20px;position:sticky;top:0;z-index:90;box-shadow:0 1px 3px rgba(20,40,60,.04)}
.hamburger{display:none;background:none;border:none;font-size:19px;color:var(--text-2);padding:4px 6px}
.topbar .crumb{flex:1;font-size:15px;color:var(--text-2)}
.topbar .crumb b{color:var(--text);font-weight:700}
.user-box{display:flex;align-items:center;gap:10px;font-size:13.5px}
.user-box .uname{font-weight:700;color:var(--text)}
.user-box .role{font-size:11.5px;background:#e7f7ef;color:var(--primary-dark);padding:2px 8px;border-radius:9px;font-weight:600}
#main{flex:1;padding:20px;max-width:1600px;width:100%}

/* ---------- 响应式 ---------- */
@media (max-width:900px){
  .sidebar{transform:translateX(-100%);box-shadow:var(--shadow-lg)}
  .sidebar.open{transform:none}
  .content-wrap{margin-left:0}
  .hamburger{display:block}
  #main{padding:14px}
}