:root{--ink:#263238;--muted:#78909c;--line:#e6ecef;--bg:#f4f6f8;--nav:#20262d;--nav2:#171c21;--blue:#2196f3;--green:#22b66e;--red:#ef476f;--amber:#f0ad4e;--purple:#7e57c2}
*{box-sizing:border-box}
html,body{min-height:100%;margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg)}
a{color:inherit;text-decoration:none}
.app-shell{display:flex;min-height:100vh}
.sidebar{position:fixed;inset:0 auto 0 0;width:230px;background:var(--nav);color:#c7d0d8;z-index:20;overflow-y:auto}
.brand{display:flex;align-items:center;height:64px;padding:0 20px;background:var(--nav2);color:#fff;font-weight:700;letter-spacing:.2px}
.brand-mark{width:32px;height:32px;border-radius:8px;background:var(--blue);display:grid;place-items:center;margin-right:11px}
.nav-label{padding:22px 20px 8px;text-transform:uppercase;font-size:10px;letter-spacing:1.2px;color:#66737e}
.nav-link{display:flex;align-items:center;gap:13px;padding:12px 20px;border-left:3px solid transparent;font-size:14px}
.nav-link:hover,.nav-link.active{background:#2a323a;color:#fff;border-left-color:var(--blue)}
.nav-link i{width:18px;text-align:center}
.page{margin-left:230px;width:calc(100% - 230px)}
.topbar{height:64px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 26px;position:sticky;top:0;z-index:10}
.topbar-title{font-weight:600}
.user-menu{display:flex;align-items:center;gap:11px;color:var(--muted);font-size:13px}
.avatar{width:34px;height:34px;border-radius:50%;background:#edf4fb;color:var(--blue);display:grid;place-items:center;font-weight:700}
.content{padding:24px}
.page-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.page-head h1{font-size:22px;margin:0}
.page-head p{margin:4px 0 0;color:var(--muted);font-size:13px}
.grid{display:grid;gap:18px}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.card,.box{background:#fff;border:1px solid var(--line);border-radius:4px;box-shadow:0 2px 8px rgba(31,45,61,.04)}
.metric{padding:18px;position:relative}.metric i{color:var(--muted)}.metric-value{font-size:26px;font-weight:600;margin:13px 0 3px}.metric-label{color:var(--muted);font-size:13px}.metric-accent{position:absolute;left:0;top:0;bottom:0;width:3px}.blue{background:var(--blue)}.green{background:var(--green)}.red{background:var(--red)}.amber{background:var(--amber)}
.box-header{padding:16px 18px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}.box-header h2{font-size:16px;margin:0}.box-body{padding:18px}
.btn{display:inline-flex;align-items:center;gap:7px;border:1px solid transparent;border-radius:4px;padding:8px 13px;background:#fff;font-size:13px;cursor:pointer}.btn-primary{background:var(--blue);color:#fff}.btn-outline{border-color:var(--blue);color:var(--blue)}.btn-danger{border-color:#f3bdc8;color:var(--red)}.btn-sm{padding:5px 9px;font-size:12px}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.form-group{display:flex;flex-direction:column;gap:6px}.form-group.full{grid-column:1/-1}.form-group label{font-size:12px;font-weight:600;color:#546e7a}.form-control{width:100%;border:1px solid #dbe3e8;border-radius:4px;padding:9px 10px;background:#fff;font:inherit;color:var(--ink)}textarea.form-control{min-height:95px;resize:vertical}.form-actions{grid-column:1/-1;display:flex;justify-content:flex-end;gap:8px;padding-top:8px}
.table-wrap{overflow-x:auto}.data-table{width:100%;border-collapse:collapse}.data-table th,.data-table td{padding:11px 12px;border-bottom:1px solid var(--line);text-align:left;font-size:13px}.data-table th{font-size:11px;text-transform:uppercase;letter-spacing:.35px;color:#607d8b;background:#fafbfc}.data-table tbody tr:hover{background:#f8fbfd}.amount{text-align:right!important;font-variant-numeric:tabular-nums}.positive{color:var(--green)}.negative{color:var(--red)}
.badge{display:inline-block;border-radius:10px;padding:3px 8px;font-size:10px;font-weight:600;background:#edf2f5;color:#607d8b}.badge-success{background:#e1f5ea;color:#16864c}.badge-warning{background:#fff3d8;color:#9a6700}
.alert{padding:12px 15px;border-radius:4px;margin-bottom:16px;font-size:13px}.alert-success{background:#e7f7ee;color:#147442;border-left:3px solid var(--green)}.alert-danger{background:#fff0f3;color:#a72642;border-left:3px solid var(--red)}
.settings-tabs{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:16px}.settings-tabs a{padding:7px 10px;border:1px solid var(--line);background:#fff;border-radius:4px;font-size:12px}.settings-tabs a.active{background:var(--blue);color:#fff}
.login-page{min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#182028,#2d3b47)}.login-card{width:min(420px,calc(100% - 32px));background:#fff;border-radius:6px;box-shadow:0 20px 60px rgba(0,0,0,.28);overflow:hidden}.login-brand{padding:26px;text-align:center;background:#20262d;color:#fff}.login-brand .brand-mark{margin:0 auto 10px}.login-form{padding:26px}.login-form h1{font-size:20px;margin:0 0 5px}.login-form p{color:var(--muted);font-size:13px;margin:0 0 20px}.login-form .form-group{margin-bottom:14px}.login-form .btn{width:100%;justify-content:center;padding:11px}
.empty{padding:32px;text-align:center;color:var(--muted)}
@media(max-width:980px){.grid-4{grid-template-columns:repeat(2,1fr)}.sidebar{width:64px}.brand span,.nav-link span,.nav-label{display:none}.brand{padding:0 16px}.brand-mark{margin:0}.nav-link{justify-content:center;padding:14px}.page{margin-left:64px;width:calc(100% - 64px)}}
@media(max-width:640px){.content{padding:15px}.grid-4,.grid-2,.form-grid{grid-template-columns:1fr}.page-head{align-items:flex-start;gap:12px}.topbar{padding:0 15px}}