* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --brand: #0099E0;
  --brand-dark: #007BB8;
  --brand-light: #E6F6FD;
  --text: #1f2937;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --bg: #f9fafb;
  --card: #ffffff;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
}
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; }

/* ============ Sidebar Layout ============ */
.app-layout { display: flex; min-height: 100vh; }
.sidebar { width: 240px; background: var(--card); border-right: 1px solid var(--border); display: flex; flex-direction: column; position: fixed; left: 0; top: 0; bottom: 0; }
.sidebar-logo { padding: 20px; border-bottom: 1px solid var(--border); text-align: center; }
.sidebar-logo img { max-width: 150px; height: auto; }
.sidebar-nav { flex: 1; padding: 16px 0; overflow-y: auto; }
.sidebar-nav a { display: flex; align-items: center; gap: 10px; padding: 11px 20px; color: var(--text); text-decoration: none; font-size: 14px; border-left: 3px solid transparent; transition: all 0.15s; }
.sidebar-nav a:hover { background: var(--brand-light); color: var(--brand-dark); }
.sidebar-nav a.active { background: var(--brand-light); color: var(--brand-dark); border-left-color: var(--brand); font-weight: 600; }
.sidebar-nav .nav-icon { font-size: 16px; width: 20px; text-align: center; }
.sidebar-footer { padding: 16px 20px; border-top: 1px solid var(--border); }
.sidebar-footer .user-name { font-size: 13px; color: var(--text-muted); margin-bottom: 8px; }

.main { margin-left: 240px; flex: 1; padding: 24px 32px; }
.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.page-header h1 { font-size: 24px; font-weight: 700; }
.page-header .subtitle { color: var(--text-muted); font-size: 14px; margin-top: 4px; }

/* ============ Cards ============ */
.card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 20px; margin-bottom: 16px; }
.card h2 { font-size: 16px; font-weight: 600; margin-bottom: 14px; color: var(--text); }
.card-grid { display: grid; gap: 16px; }
.card-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.card-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.card-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

/* ============ Stat cards ============ */
.stat-card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 18px; }
.stat-card .stat-label { font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; font-weight: 600; }
.stat-card .stat-value { font-size: 28px; font-weight: 700; color: var(--text); margin-top: 4px; }
.stat-card .stat-trend { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.stat-card .stat-trend.up { color: var(--success); }
.stat-card .stat-trend.down { color: var(--danger); }

/* ============ Form elements ============ */
label { display: block; font-size: 13px; color: var(--text); font-weight: 500; margin-bottom: 6px; margin-top: 12px; }
input[type=text], input[type=password], input[type=number], input[type=date], select, textarea {
  width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px; font-family: inherit; background: #fff; transition: border-color 0.15s;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px rgba(0, 153, 224, 0.1); }
textarea { min-height: 120px; resize: vertical; font-family: ui-monospace, monospace; }
button { background: var(--brand); color: #fff; border: 0; padding: 9px 18px; border-radius: 6px; font-size: 14px; font-weight: 500; cursor: pointer; margin-top: 12px; transition: background 0.15s; }
button:hover { background: var(--brand-dark); }
button:disabled { opacity: 0.6; cursor: not-allowed; }
button.danger { background: var(--danger); }
button.danger:hover { background: #dc2626; }
button.secondary { background: #fff; color: var(--text); border: 1px solid var(--border); }
button.secondary:hover { background: var(--bg); }

.row { display: flex; gap: 12px; }
.row > * { flex: 1; }

/* ============ Tables ============ */
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); }
th { background: var(--bg); font-weight: 600; font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-muted); }
tr:hover { background: var(--bg); }

/* ============ Badges ============ */
.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.3px; }
.badge.sale { background: #d1fae5; color: #065f46; }
.badge.no-sale, .badge.ni { background: #fee2e2; color: #991b1b; }
.badge.np { background: #fef3c7; color: #92400e; }
.badge.ongoing { background: #dbeafe; color: #1e40af; }
.badge.unknown { background: #f3f4f6; color: #6b7280; }

/* ============ Utility ============ */
.error { color: var(--danger); font-size: 13px; margin-top: 6px; }
.ok { color: var(--success); font-size: 13px; margin-top: 6px; }
.muted { color: var(--text-muted); font-size: 13px; }
.spacer { flex: 1; }

/* ============ Modal ============ */
.modal { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.5); z-index: 1000; align-items: center; justify-content: center; }
.modal.open { display: flex; }
.modal-content { background: #fff; border-radius: 12px; width: 90%; max-width: 700px; max-height: 90vh; overflow: auto; padding: 24px; box-shadow: 0 20px 50px rgba(0,0,0,0.3); }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.modal-header h2 { margin: 0; font-size: 18px; }

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