:root {
  --bg: #f6f4ef;
  --panel: #ffffff;
  --ink: #1e1b16;
  --muted: #6e6a63;
  --accent: #e0a93a;
  --accent-2: #0f766e;
  --danger: #c2410c;
  --line: #e7e2d8;
  --shadow: 0 10px 30px rgba(0,0,0,0.08);
  --radius: 18px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, #fbf8f0, #f2efe8);
  min-height: 100vh;
}

.hidden { display: none !important; }

.sub { color: var(--muted); font-size: 13px; }

.btn {
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  font-size: 14px;
  cursor: pointer;
}
.btn:hover { background: var(--bg); }

/* Login */
.login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.login-card {
  background: var(--panel);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 40px;
  text-align: center;
  max-width: 360px;
  width: 100%;
}

.login-card h1 { margin: 0 0 8px; font-size: 24px; }
.login-card input {
  display: block;
  width: 100%;
  padding: 10px 14px;
  margin: 16px 0 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 16px;
  text-align: center;
}
.login-card .btn { width: 100%; }
.error { color: var(--danger); font-size: 13px; margin-top: 8px; }

/* Header */
.dash-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  background: var(--panel);
  box-shadow: var(--shadow);
}
.dash-header h1 { margin: 0; font-size: 20px; }
.dash-actions { display: flex; gap: 8px; }

/* Tabs */
.dash-tabs {
  display: flex;
  gap: 6px;
  padding: 12px 20px 0;
}
.dash-tab.active {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

/* KPI */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  padding: 12px 20px 0;
}
.kpi-card {
  background: var(--panel);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  text-align: center;
}
.kpi-label { font-size: 13px; color: var(--muted); }
.kpi-value { font-size: 28px; font-weight: 700; margin-top: 4px; }

/* Card */
.card {
  background: var(--panel);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  margin: 12px 20px 0;
}
.card h3 { margin: 0 0 10px; font-size: 16px; }

/* Tables */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.data-table th {
  text-align: left;
  padding: 6px 8px;
  border-bottom: 2px solid var(--line);
  font-weight: 600;
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
}
.data-table td {
  padding: 6px 8px;
  border-bottom: 1px solid var(--line);
}
.data-table tr:last-child td { border-bottom: none; }
.data-table .num { text-align: right; font-variant-numeric: tabular-nums; }

/* History controls */
.history-controls {
  display: flex;
  gap: 12px;
  align-items: end;
  flex-wrap: wrap;
}
.history-controls label { font-size: 13px; color: var(--muted); }
.history-controls input[type="date"] {
  display: block;
  padding: 6px 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 14px;
  margin-top: 4px;
}

/* Export controls */
.export-controls {
  display: flex;
  gap: 12px;
  align-items: end;
  flex-wrap: wrap;
}
.export-controls label { font-size: 13px; color: var(--muted); }
.export-controls input[type="date"] {
  display: block;
  padding: 6px 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 14px;
  margin-top: 4px;
}

/* Chart placeholder */
canvas { width: 100% !important; max-height: 260px; }

/* Content wrapper */
.tab-panel { padding-bottom: 20px; }

@media (max-width: 600px) {
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .dash-header { flex-direction: column; gap: 8px; }
  .card { margin: 12px 10px 0; }
  .kpi-grid { padding: 12px 10px 0; }
  .dash-tabs { padding: 12px 10px 0; }
}

/* Settings form */
.settings-form { display: flex; flex-direction: column; gap: 12px; margin-top: 8px; }
.settings-form label { font-size: 13px; color: var(--muted); display: flex; flex-direction: column; gap: 4px; }
.settings-form input[type="text"] {
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 14px;
  font-family: monospace;
}
.settings-actions { display: flex; gap: 8px; }
.settings-status { font-size: 13px; min-height: 20px; }
.settings-status.ok { color: var(--accent-2); }
.settings-status.err { color: var(--danger); }