:root {
  --bg: #f4f6f9;
  --panel: #ffffff;
  --border: #e2e6ec;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --danger: #dc2626;
  --success: #16a34a;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

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

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

.sidebar {
  width: 230px;
  flex-shrink: 0;
  background: #111827;
  color: #d1d5db;
  padding: 20px 0;
  display: flex;
  flex-direction: column;
}

.sidebar .brand {
  font-weight: 700;
  font-size: 16px;
  color: #fff;
  padding: 0 20px 18px;
  border-bottom: 1px solid #1f2937;
  margin-bottom: 10px;
}

.sidebar nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  color: #d1d5db;
  font-size: 14px;
}

.sidebar nav a:hover { background: #1f2937; text-decoration: none; color: #fff; }
.sidebar nav a.active { background: var(--primary); color: #fff; }

.sidebar .sidebar-footer {
  margin-top: auto;
  padding: 12px 20px 0;
  border-top: 1px solid #1f2937;
  font-size: 12px;
  color: #9ca3af;
}

.main { flex: 1; min-width: 0; padding: 24px 28px 60px; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.topbar h1 { font-size: 20px; margin: 0; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
}

.btn:hover { background: #f3f4f6; text-decoration: none; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-danger { color: var(--danger); border-color: #fecaca; }
.btn-danger:hover { background: #fef2f2; }
.btn-sm { padding: 5px 10px; font-size: 12px; }

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

.card h2 { margin-top: 0; font-size: 16px; }

table.grid { width: 100%; border-collapse: collapse; }
table.grid th, table.grid td {
  padding: 9px 10px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: middle;
}
table.grid th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .02em; }
table.grid tbody tr:hover { background: #f9fafb; }

.form-row { margin-bottom: 14px; }
.form-row label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 5px; font-weight: 600; }
.form-row input[type=text],
.form-row input[type=number],
.form-row input[type=date],
.form-row input[type=password],
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 7px;
  font-size: 13px;
  font-family: inherit;
  background: #fff;
  color: var(--text);
}
.form-row textarea { resize: vertical; min-height: 60px; }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 20px; }
.form-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 20px; }
@media (max-width: 800px) { .form-grid, .form-grid-3 { grid-template-columns: 1fr; } }

.badge { display: inline-block; padding: 2px 9px; border-radius: 20px; font-size: 11px; font-weight: 600; }
.badge-draft { background: #fef3c7; color: #92400e; }
.badge-done { background: #dcfce7; color: #166534; }
.badge-schet { background: #dbeafe; color: #1e40af; }
.badge-dogovor { background: #ede9fe; color: #5b21b6; }
.badge-tn2 { background: #fee2e2; color: #991b1b; }

.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 16px; font-size: 13px; }
.flash-success { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.flash-error { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }

.muted { color: var(--muted); }
.text-right { text-align: right; }
.mt-0 { margin-top: 0; }
.actions-row { display: flex; gap: 8px; flex-wrap: wrap; }

.empty-state { text-align: center; padding: 50px 20px; color: var(--muted); }
.empty-state .big { font-size: 40px; margin-bottom: 10px; }

.items-table input { width: 100%; border: 1px solid transparent; background: transparent; padding: 6px 4px; font-size: 13px; border-radius: 5px; }
.items-table input:focus { border-color: var(--primary); background: #fff; outline: none; }
.items-table th { font-size: 11px; }
.items-table td { padding: 2px 4px; }
.items-table .rm-row { color: var(--danger); cursor: pointer; background: none; border: none; font-size: 16px; }
.totals-box { max-width: 420px; margin-left: auto; margin-top: 14px; }
.totals-box .row { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px dashed var(--border); font-size: 13px; }
.totals-box .row strong { font-size: 15px; }
.sum-words { font-style: italic; color: var(--muted); margin-top: 6px; font-size: 12.5px; }

.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--bg); }
.login-box { width: 340px; background: #fff; border: 1px solid var(--border); border-radius: 12px; padding: 30px; box-shadow: var(--shadow); }
.login-box h1 { font-size: 18px; margin-top: 0; text-align: center; }

.doc-links { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }

@media print {
  .no-print { display: none !important; }
  body { background: #fff; }
}