:root {
  --bg: #0f1115;
  --bg-2: #161a22;
  --bg-3: #1d2230;
  --border: #2a3142;
  --text: #e8ecf3;
  --muted: #8993a8;
  --primary: #4f8cff;
  --primary-h: #6a9eff;
  --green: #2fd584;
  --red: #ff5d6c;
  --yellow: #f4c560;
  --radius: 10px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); font: 14px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
a { color: var(--primary); text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }

/* Layout */
.layout { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }
.sidebar { background: var(--bg-2); border-right: 1px solid var(--border); padding: 18px 14px; }
.sidebar h1 { font-size: 16px; margin: 0 0 18px; display: flex; align-items: center; gap: 8px; }
.nav { display: flex; flex-direction: column; gap: 4px; }
.nav a { padding: 8px 10px; border-radius: 8px; color: var(--text); }
.nav a:hover { background: var(--bg-3); }
.nav a.active { background: var(--primary); color: white; }
.sidebar .footer { margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--border); display: flex; flex-direction: column; gap: 6px; }
.main { padding: 20px 28px; max-width: 1400px; }
.main h2 { margin: 0 0 14px; font-size: 22px; }
.muted { color: var(--muted); }

/* Buttons */
.btn { background: var(--primary); color: white; border: 0; padding: 8px 14px; border-radius: 8px; cursor: pointer; font-weight: 500; }
.btn:hover { background: var(--primary-h); }
.btn.secondary { background: var(--bg-3); color: var(--text); }
.btn.secondary:hover { background: #283044; }
.btn.danger { background: var(--red); }
.btn.ghost { background: transparent; color: var(--muted); padding: 4px 8px; }
.btn.ghost:hover { color: var(--text); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Forms */
.field { display: flex; flex-direction: column; gap: 4px; margin-bottom: 10px; }
.field label { font-size: 12px; color: var(--muted); }
input, select, textarea { background: var(--bg-3); border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; outline: none; width: 100%; }
input:focus, select:focus, textarea:focus { border-color: var(--primary); }
textarea { min-height: 60px; resize: vertical; }

/* Cards / KPI */
.grid { display: grid; gap: 12px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 900px) { .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; } .layout { grid-template-columns: 1fr; } .sidebar { border-right: 0; border-bottom: 1px solid var(--border); } }
.card { background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.kpi .label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; }
.kpi .value { font-size: 22px; font-weight: 600; margin-top: 4px; }
.kpi .value.green { color: var(--green); }
.kpi .value.red { color: var(--red); }

/* Table */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { background: var(--bg-2); color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; cursor: pointer; user-select: none; }
tr:hover td { background: rgba(255,255,255,0.02); }
.tag { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px; background: var(--bg-3); color: var(--muted); }
.tag.long { background: rgba(47,213,132,0.15); color: var(--green); }
.tag.short { background: rgba(255,93,108,0.15); color: var(--red); }
.amt.green { color: var(--green); }
.amt.red { color: var(--red); }

/* Modal */
.modal-bg { position: fixed; inset: 0; background: rgba(0,0,0,0.5); display: flex; align-items: center; justify-content: center; z-index: 100; }
.modal { background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; width: 100%; max-width: 720px; max-height: 90vh; overflow-y: auto; }
.modal h3 { margin: 0 0 14px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 14px; }

/* Login */
.login { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px; }
.login .card { width: 100%; max-width: 360px; }
.login h1 { margin: 0 0 6px; font-size: 22px; }
.login p { margin: 0 0 16px; color: var(--muted); }
.error { color: var(--red); font-size: 13px; margin-top: 6px; }

/* Filters */
.toolbar { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; align-items: center; }
.toolbar input, .toolbar select { width: auto; min-width: 140px; }

/* Chart */
.chart-wrap { height: 280px; position: relative; }