:root {
  --bg: #0f172a;
  --bg-card: #1e293b;
  --bg-input: #0f172a;
  --border: rgba(148,163,184,0.12);
  --border-hover: rgba(148,163,184,0.25);
  --text: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-dim: #64748b;
  --green: #34d399;
  --green-muted: rgba(52,211,153,0.12);
  --red: #ef4444;
  --red-muted: rgba(239,68,68,0.12);
  --blue: #3b82f6;
  --blue-muted: rgba(59,130,246,0.12);
  --orange: #f97316;
  --orange-muted: rgba(249,115,22,0.12);
  --purple: #a855f7;
  --purple-muted: rgba(168,85,247,0.12);
  --yellow: #eab308;
  --sidebar-w: 240px;
  --radius: 10px;
  --radius-sm: 6px;
}

*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;color:var(--text);background:var(--bg);display:flex;overflow:hidden;-webkit-font-smoothing:antialiased}

/* Sidebar */
.sidebar{width:var(--sidebar-w);height:100vh;background:#0c1425;border-right:1px solid var(--border);display:flex;flex-direction:column;flex-shrink:0;overflow-y:auto;transition:transform .2s ease}
.sidebar-brand{display:flex;align-items:center;gap:10px;padding:20px 18px;border-bottom:1px solid var(--border)}
.brand-icon{width:34px;height:34px;border-radius:8px;background:linear-gradient(135deg,#34d399,#06b6d4);display:grid;place-items:center;font-weight:800;font-size:18px;color:#fff}
.brand-text{font-weight:700;font-size:16px;letter-spacing:-.02em}
.sidebar-nav{flex:1;padding:12px 8px;display:flex;flex-direction:column;gap:2px}
.nav-item{background:none;border:none;color:var(--text-secondary);padding:10px 14px;border-radius:var(--radius-sm);font-size:13px;font-weight:500;cursor:pointer;text-align:left;display:flex;align-items:center;gap:10px;transition:all .15s}
.nav-item:hover{color:var(--text);background:rgba(255,255,255,.04);transform:none}
.nav-item.active{color:var(--green);background:var(--green-muted);font-weight:600}
.nav-icon{font-size:11px;width:18px;text-align:center}
.sidebar-footer{padding:16px;border-top:1px solid var(--border);display:flex;flex-direction:column;gap:10px}
.shop-info{font-size:11px;color:var(--text-dim)}

/* Main */
.main{flex:1;overflow-y:auto;display:flex;flex-direction:column}
.topbar{display:flex;align-items:center;gap:16px;padding:12px 24px;border-bottom:1px solid var(--border);background:rgba(15,23,42,.8);backdrop-filter:blur(12px);position:sticky;top:0;z-index:50}
.menu-toggle{display:none;background:none;border:none;color:var(--text);font-size:20px;cursor:pointer}
.date-filter{display:flex;align-items:center;gap:10px;margin-left:auto;flex-wrap:wrap}
.date-filter label{font-size:12px;color:var(--text-secondary);display:flex;align-items:center;gap:4px}
.date-filter input[type="date"]{background:var(--bg-input);border:1px solid var(--border);color:var(--text);padding:5px 8px;border-radius:var(--radius-sm);font-size:12px}
.date-filter select{background:var(--bg-input);border:1px solid var(--border);color:var(--text);padding:5px 8px;border-radius:var(--radius-sm);font-size:12px}

#page-content{flex:1;padding:24px;overflow-y:auto}

/* Cards */
.page-title{font-size:22px;font-weight:700;margin-bottom:20px;letter-spacing:-.02em}
.stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px;margin-bottom:24px}
.stat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:18px;transition:border-color .15s}
.stat-card:hover{border-color:var(--border-hover)}
.stat-label{font-size:11px;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.06em;margin-bottom:4px}
.stat-value{font-size:24px;font-weight:700;letter-spacing:-.03em}
.stat-value.positive{color:var(--green)}
.stat-value.negative{color:var(--red)}
.stat-sub{font-size:11px;color:var(--text-dim);margin-top:2px}

.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:16px}
.card-title{font-size:15px;font-weight:600;margin-bottom:14px;display:flex;align-items:center;justify-content:space-between}

.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}

/* Chart */
.chart-container{position:relative;height:280px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-bottom:16px}
.chart-canvas{width:100%;height:100%}
.chart-bar-group{display:flex;align-items:flex-end;gap:2px;height:100%;padding-top:24px}
.chart-bar{flex:1;min-width:3px;border-radius:3px 3px 0 0;transition:height .3s ease;position:relative;cursor:pointer}
.chart-bar:hover::after{content:attr(data-tip);position:absolute;bottom:100%;left:50%;transform:translateX(-50%);background:#1e293b;border:1px solid var(--border);padding:4px 8px;border-radius:4px;font-size:10px;white-space:nowrap;z-index:10;color:var(--text)}
.chart-bar.revenue{background:var(--blue)}
.chart-bar.profit{background:var(--green)}
.chart-bar.cogs{background:var(--orange)}
.chart-bar.fees{background:var(--red)}
.chart-legend{display:flex;gap:16px;margin-top:10px;font-size:11px;color:var(--text-secondary)}
.chart-legend span::before{content:"";display:inline-block;width:10px;height:10px;border-radius:2px;margin-right:4px;vertical-align:middle}
.chart-legend .l-revenue::before{background:var(--blue)}
.chart-legend .l-profit::before{background:var(--green)}
.chart-legend .l-cogs::before{background:var(--orange)}
.chart-legend .l-fees::before{background:var(--red)}

/* Tables */
.table-wrap{overflow-x:auto;margin-top:8px}
table{width:100%;border-collapse:collapse;font-size:13px}
th{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border);color:var(--text-secondary);font-weight:600;font-size:11px;text-transform:uppercase;letter-spacing:.04em;white-space:nowrap;cursor:pointer;user-select:none}
th:hover{color:var(--text)}
td{padding:10px 12px;border-bottom:1px solid rgba(148,163,184,.06)}
tr:hover td{background:rgba(255,255,255,.02)}
.text-right{text-align:right}
.text-green{color:var(--green)}
.text-red{color:var(--red)}
.text-blue{color:var(--blue)}
.text-orange{color:var(--orange)}
.text-dim{color:var(--text-dim)}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:6px;border:none;border-radius:var(--radius-sm);padding:8px 16px;font-size:13px;font-weight:600;cursor:pointer;transition:all .15s;white-space:nowrap}
.btn:hover{transform:translateY(-1px)}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}
.btn-sm{padding:6px 12px;font-size:12px}
.btn-primary{background:var(--blue);color:#fff}
.btn-success{background:var(--green);color:#fff}
.btn-danger{background:var(--red);color:#fff}
.btn-ghost{background:transparent;border:1px solid var(--border);color:var(--text)}
.btn-ghost:hover{border-color:var(--text-dim);background:rgba(255,255,255,.03)}

/* Forms */
.form-group{margin-bottom:14px}
.form-group label{display:block;font-size:12px;font-weight:500;color:var(--text-secondary);margin-bottom:4px}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:8px 12px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);font:inherit;font-size:13px}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 3px var(--green-muted)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-row-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px}

/* Chips / Tags */
.chip{display:inline-flex;align-items:center;padding:3px 8px;border-radius:999px;font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.04em}
.chip-green{background:var(--green-muted);color:var(--green)}
.chip-red{background:var(--red-muted);color:var(--red)}
.chip-blue{background:var(--blue-muted);color:var(--blue)}
.chip-orange{background:var(--orange-muted);color:var(--orange)}
.chip-purple{background:var(--purple-muted);color:var(--purple)}

/* Modal */
.modal-overlay{position:fixed;inset:0;z-index:200;display:grid;place-items:center;background:rgba(0,0,0,.6);backdrop-filter:blur(4px)}
.modal{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:0;max-width:560px;width:calc(100vw - 48px);max-height:calc(100vh - 48px);overflow-y:auto;box-shadow:0 12px 48px rgba(0,0,0,.4)}
.modal-header{display:flex;align-items:center;justify-content:space-between;padding:18px 24px;border-bottom:1px solid var(--border)}
.modal-header h3{font-size:16px;font-weight:700}
.modal-close{background:none;border:none;color:var(--text-secondary);font-size:22px;cursor:pointer;padding:0 4px}
.modal-close:hover{color:var(--text)}
#modal-body{padding:24px}

/* Toast */
.toast{position:fixed;right:20px;bottom:20px;max-width:400px;padding:12px 16px;border-radius:var(--radius);background:var(--bg-card);border:1px solid var(--border);color:var(--text);font-size:13px;z-index:300;box-shadow:0 8px 32px rgba(0,0,0,.3);animation:slideUp .3s ease}
.toast.error{border-color:rgba(239,68,68,.3)}
.toast.success{border-color:rgba(34,197,94,.3)}

/* Calculator */
.calc-result{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-top:16px}
.calc-row{display:flex;justify-content:space-between;padding:6px 0;font-size:13px;border-bottom:1px solid rgba(148,163,184,.06)}
.calc-row.total{font-weight:700;font-size:15px;border-top:2px solid var(--border);border-bottom:none;padding-top:12px;margin-top:8px}

/* Tracker */
.track-item{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:14px;margin-bottom:10px;display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.track-info h4{font-size:14px;font-weight:600;margin-bottom:4px}
.track-info p{font-size:12px;color:var(--text-secondary)}
.track-info a{color:var(--blue);font-size:12px;text-decoration:none}

.hidden{display:none!important}
@keyframes slideUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}

/* Responsive */
@media(max-width:768px){
  .sidebar{position:fixed;z-index:100;transform:translateX(-100%)}
  .sidebar.open{transform:translateX(0)}
  .menu-toggle{display:block}
  .stats-grid{grid-template-columns:1fr 1fr}
  .grid-2,.grid-3{grid-template-columns:1fr}
  .form-row,.form-row-3{grid-template-columns:1fr}
  #page-content{padding:16px}
}
@media(max-width:480px){
  .stats-grid{grid-template-columns:1fr}
  .date-filter{flex-direction:column;align-items:stretch}
}