/* ==========================================================================
   Expenses Studio — feuille de style (thème sombre, sobre)
   ========================================================================== */
:root {
  --bg: #0d1017;
  --bg-card: #151a23;
  --bg-elev: #1c2230;
  --border: #252c3a;
  --text: #e8edf5;
  --text-muted: #8a94a6;
  --primary: #4CAF50;
  --primary-dim: rgba(76, 175, 80, 0.12);
  --accent: #00c9f7;
  --danger: #ff5470;
  --radius: 10px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}

.muted { color: var(--text-muted); }
.small { font-size: 11px; }

.layout { display: flex; min-height: 100vh; }

/* ---- Sidebar ---- */
.sidebar {
  width: 240px;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 18px 14px;
  position: sticky;
  top: 0;
  height: 100vh;
}
.brand { display: flex; align-items: center; gap: 10px; margin-bottom: 24px; }
.brand .logo { font-size: 26px; }
.brand h1 { font-size: 16px; font-weight: 700; }
.brand p { font-size: 10px; }

nav { display: flex; flex-direction: column; gap: 4px; }
.nav-btn {
  text-align: left;
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 13.5px;
  cursor: pointer;
  transition: all 0.15s;
}
.nav-btn:hover { background: var(--bg-elev); color: var(--text); }
.nav-btn.active { background: var(--primary-dim); color: var(--primary); font-weight: 600; }

.sidebar-foot { margin-top: auto; display: flex; flex-direction: column; gap: 8px; }
.export-row { display: flex; gap: 8px; }
.export-row .ghost { flex: 1; padding: 8px 6px; font-size: 12px; }

/* ---- Buttons ---- */
button { font-family: inherit; }
.ghost, .btn {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 9px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  transition: all 0.15s;
}
.ghost:hover, .btn:hover { border-color: var(--primary); }
.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #06270c;
  font-weight: 600;
}
.btn-primary:hover { filter: brightness(1.08); }

/* ---- Main ---- */
.main { flex: 1; padding: 26px 32px; max-width: 100%; overflow-x: hidden; }
.view h2 { font-size: 22px; margin-bottom: 4px; }
.view > .sub { color: var(--text-muted); margin-bottom: 20px; }

.loader { color: var(--text-muted); padding: 40px; text-align: center; }

/* ---- KPI cards ---- */
.kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 22px; }
.kpi {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
}
.kpi .label { font-size: 12px; color: var(--text-muted); }
.kpi .value { font-size: 24px; font-weight: 700; margin-top: 4px; }
.kpi .delta { font-size: 12px; color: var(--primary); margin-top: 2px; }
.kpi.warn .value { color: var(--danger); }

/* ---- Grid & cards ---- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 18px; }
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
}
.card h3 { font-size: 14px; margin-bottom: 12px; font-weight: 600; }
.chart { width: 100%; height: 320px; }

/* ---- Controls ---- */
.controls { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin-bottom: 18px; }
select, input[type="text"] {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 13px;
  font-family: inherit;
  outline: none;
}
label.field { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--text-muted); }

/* ---- Tables ---- */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-size: 12.5px; }
th, td { padding: 8px 12px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { background: var(--bg-elev); color: var(--text-muted); font-weight: 600; position: sticky; top: 0; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tr:hover td { background: var(--bg-elev); }

/* ---- Tabs ---- */
.tabs { display: flex; gap: 6px; margin-bottom: 16px; }
.tab { background: transparent; border: 1px solid var(--border); color: var(--text-muted); padding: 8px 14px; border-radius: 8px; cursor: pointer; font-size: 13px; }
.tab.active { background: var(--primary-dim); color: var(--primary); border-color: var(--primary); }

/* ---- Upload ---- */
.upload-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 20px; }
.upload-card { background: var(--bg-card); border: 1px dashed var(--border); border-radius: var(--radius); padding: 18px; }
.upload-card h3 { margin-bottom: 8px; }
.file-list { list-style: none; margin-top: 10px; font-size: 12px; color: var(--text-muted); }
.file-list li { display: flex; justify-content: space-between; padding: 3px 0; }
.file-list .del { cursor: pointer; color: var(--danger); }

/* ---- Banner ---- */
.banner { padding: 14px 18px; border-radius: var(--radius); margin-bottom: 18px; font-size: 14px; }
.banner.info { background: rgba(0,201,247,0.08); border: 1px solid rgba(0,201,247,0.25); }
.banner.success { background: var(--primary-dim); border: 1px solid var(--primary); }
.banner.error { background: rgba(255,84,112,0.08); border: 1px solid var(--danger); color: #ffb3c0; }

/* ---- Toast ---- */
.toast-container { position: fixed; top: 18px; right: 18px; z-index: 9999; display: flex; flex-direction: column; gap: 8px; }
.toast { background: var(--bg-elev); border: 1px solid var(--border); border-left: 3px solid var(--primary); padding: 12px 16px; border-radius: 8px; font-size: 13px; max-width: 340px; box-shadow: 0 8px 24px rgba(0,0,0,0.4); }
.toast.error { border-left-color: var(--danger); }

@media (max-width: 900px) {
  .kpis { grid-template-columns: repeat(2, 1fr); }
  .grid-2, .upload-grid { grid-template-columns: 1fr; }
}