:root {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --border: #e2e5ea;
  --text: #1f2430;
  --muted: #6b7280;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --danger: #dc2626;
  --success: #16a34a;
  --warning: #d97706;
  --info: #0891b2;
  --radius: 8px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

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

.sidebar {
  width: 220px;
  background: #14181f;
  color: #d7dbe3;
  display: flex;
  flex-direction: column;
  padding: 20px 0;
  flex-shrink: 0;
}
.sidebar .brand { font-weight: 700; font-size: 1.05rem; padding: 0 20px 20px; color: #fff; }
.sidebar a { color: #d7dbe3; padding: 10px 20px; display: block; }
.sidebar a:hover { background: #1e232c; text-decoration: none; }
.sidebar a.active { background: #1e232c; color: #fff; border-left: 3px solid var(--primary); }
.sidebar-footer {
  margin-top: auto;
  padding: 16px 20px 0;
  border-top: 1px solid #262b35;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.85rem;
}

.content { flex: 1; padding: 28px 32px; max-width: 1200px; }

h1, h2, h3 { margin-top: 0; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}

.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; gap: 12px; flex-wrap: wrap; }

table { width: 100%; border-collapse: collapse; background: var(--panel); }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 0.92rem; }
th { color: var(--muted); font-weight: 600; text-transform: uppercase; font-size: 0.72rem; letter-spacing: .03em; }
tr:hover td { background: #fafbfc; }
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
.table-wrap table { border: none; }

.btn {
  display: inline-block;
  padding: 8px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
  font-size: 0.9rem;
}
.btn:hover { background: #f2f3f5; text-decoration: none; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-sm { padding: 4px 10px; font-size: 0.8rem; }
.btn-block { width: 100%; }
.btn-group { display: flex; gap: 8px; flex-wrap: wrap; }

form.inline { display: inline; }

label { display: block; margin: 12px 0 4px; font-size: 0.85rem; color: var(--muted); }
input[type=text], input[type=password], input[type=number], input[type=date], input[type=file], select, textarea {
  width: 100%;
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.95rem;
  background: #fff;
  color: var(--text);
}
.form-row { display: flex; gap: 16px; flex-wrap: wrap; }
.form-row > * { flex: 1; min-width: 180px; }

.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 16px; margin-bottom: 24px; }
.kpi-card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.kpi-card .label { color: var(--muted); font-size: 0.78rem; text-transform: uppercase; letter-spacing: .03em; }
.kpi-card .value { font-size: 1.5rem; font-weight: 700; margin-top: 4px; }
.kpi-card .value.positive { color: var(--success); }
.kpi-card .value.negative { color: var(--danger); }

.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 0.75rem; font-weight: 600; }
.badge-completed { background: #dcfce7; color: #166534; }
.badge-cancelled { background: #fee2e2; color: #991b1b; }
.badge-refunded { background: #fef3c7; color: #92400e; }
.badge-pending { background: #fef3c7; color: #92400e; }

.flash-container { margin-bottom: 16px; display: flex; flex-direction: column; gap: 8px; }
.flash { padding: 10px 14px; border-radius: var(--radius); font-size: 0.9rem; }
.flash-success { background: #dcfce7; color: #166534; }
.flash-danger { background: #fee2e2; color: #991b1b; }
.flash-warning { background: #fef3c7; color: #92400e; }
.flash-info { background: #dbeafe; color: #1e40af; }

.muted { color: var(--muted); }
.text-right { text-align: right; }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }

.result-banner { border-left: 4px solid var(--border); }
.result-banner.positive { border-left-color: var(--success); }
.result-banner.negative { border-left-color: var(--danger); }
.result-banner .headline { font-size: 1.3rem; font-weight: 700; }
.result-banner ul { margin: 12px 0 0; padding-left: 20px; }
.result-banner li { margin-bottom: 4px; }

.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-card { width: 320px; }
.login-card h1 { font-size: 1.3rem; }