:root {
  --bg: #f4f5fa;
  --surface: #ffffff;
  --ink: #161a2b;
  --ink-soft: #6b7280;
  --ink-faint: #9ca3af;
  --border: #e7e8f2;
  --border-soft: #eef0f8;

  --sidebar-from: #14162b;
  --sidebar-to: #1d2044;
  --sidebar-text: #a6a9c4;
  --sidebar-text-active: #ffffff;
  --sidebar-active-bg: rgba(255,255,255,0.08);

  --accent: #6366f1;
  --accent-strong: #4f46e5;
  --accent-soft: #eef0ff;

  --status-none: #8c94a0;
  --status-none-bg: #eef0f2;
  --status-incomplete: #e0455a;
  --status-incomplete-bg: #fdecef;
  --status-progress: #d68a12;
  --status-progress-bg: #fdf3e0;
  --status-done: #16a271;
  --status-done-bg: #e5f7f0;

  --radius: 14px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 2px rgba(20,20,50,0.04);
  --shadow: 0 2px 10px rgba(20,20,50,0.05), 0 10px 30px rgba(20,20,50,0.04);
}

* { box-sizing: border-box; }
html, body, #root, #app { height: 100%; }

body {
  margin: 0;
  font-family: "Vazirmatn", "Tahoma", sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { margin: 0; font-weight: 700; letter-spacing: -0.01em; }
button { font-family: inherit; cursor: pointer; }
input, select { font-family: inherit; font-size: 14px; }
a { color: inherit; text-decoration: none; }

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

.sidebar {
  width: 254px;
  flex-shrink: 0;
  background: linear-gradient(180deg, var(--sidebar-from), var(--sidebar-to));
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
  padding: 22px 14px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.sidebar-brand {
  color: #fff;
  font-size: 15.5px;
  font-weight: 700;
  padding: 4px 10px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar-brand .logo-mark {
  width: 30px; height: 30px; border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), #8b8ef0);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-weight: 700; font-size: 14px; color: #fff;
}

.sidebar-brand .brand-text span {
  display: block;
  font-weight: 400;
  font-size: 11.5px;
  color: var(--sidebar-text);
  margin-top: 2px;
}

.nav-section-label {
  font-size: 11px;
  color: rgba(166,169,196,0.7);
  padding: 14px 12px 6px;
  font-weight: 600;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 9px;
  color: var(--sidebar-text);
  font-size: 13.5px;
  margin-bottom: 2px;
  transition: background 0.12s ease, color 0.12s ease;
}
.nav-link svg { width: 16px; height: 16px; flex-shrink: 0; opacity: 0.85; }
.nav-link:hover { background: rgba(255,255,255,0.06); color: #fff; }
.nav-link.active { background: var(--sidebar-active-bg); color: var(--sidebar-text-active); font-weight: 600; }
.nav-link.active svg { opacity: 1; }

.nav-sub {
  margin-inline-start: 8px;
  border-inline-start: 1px solid rgba(255,255,255,0.08);
  padding-inline-start: 8px;
}
.nav-sub .nav-link { font-size: 12.5px; padding: 7px 10px; }

.nav-toggle {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%; background: none; border: none; color: var(--sidebar-text);
  padding: 9px 12px; border-radius: 9px; font-size: 13.5px; font-family: inherit;
}
.nav-toggle:hover { background: rgba(255,255,255,0.06); color: #fff; }
.nav-toggle .chev { transition: transform 0.15s ease; }
.nav-toggle.open .chev { transform: rotate(90deg); }
.nav-toggle-left { display:flex; align-items:center; gap:10px; }
.nav-toggle svg { width:16px; height:16px; opacity:0.85; }

.sidebar-footer {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 12.5px;
}

.sidebar-user { color: #fff; font-weight: 600; margin-bottom: 2px; }
.logout-btn { background: none; border: none; color: var(--sidebar-text); font-size: 12.5px; padding: 0; margin-top: 8px; text-decoration: underline; }

.main { flex: 1; min-width: 0; padding: 28px 34px 60px; }

.page-header { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 22px; flex-wrap: wrap; gap: 10px; }
.page-title { font-size: 21px; font-weight: 700; }
.page-subtitle { color: var(--ink-soft); font-size: 13px; margin-top: 4px; }

/* ---------------- Cards / surfaces ---------------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  box-shadow: var(--shadow-sm);
}

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; margin-bottom: 22px; }

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}
.stat-card .stat-icon {
  width: 38px; height: 38px; border-radius: 10px;
  background: var(--accent-soft); color: var(--accent);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.stat-card .stat-icon svg { width: 18px; height: 18px; }
.stat-card .stat-value { font-size: 25px; font-weight: 700; }
.stat-card .stat-label { color: var(--ink-soft); font-size: 12.5px; margin-top: 4px; }

/* ---------------- Report / chart cards ---------------- */
.report-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 16px; margin-bottom: 16px; }
.chart-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 22px; box-shadow: var(--shadow-sm); }
.chart-card h3 { font-size: 14.5px; margin-bottom: 4px; }
.chart-card .chart-sub { font-size: 12px; color: var(--ink-soft); margin-bottom: 14px; }
.chart-card canvas { max-height: 260px; }
.chart-card.wide { grid-column: 1 / -1; }

/* ---------------- Status badges ---------------- */
.status-badge { display: inline-flex; align-items: center; gap: 6px; padding: 4px 11px; border-radius: 999px; font-size: 12px; font-weight: 600; white-space: nowrap; }
.status-badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

/* ---------------- Tables ---------------- */
.table-wrap { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); }
table { width: 100%; border-collapse: collapse; }
thead th { text-align: right; font-size: 11.5px; color: var(--ink-soft); font-weight: 600; padding: 12px 16px; background: #fafafe; border-bottom: 1px solid var(--border); white-space: nowrap; letter-spacing: 0.01em; }
tbody td { padding: 12px 16px; border-bottom: 1px solid var(--border-soft); font-size: 13.5px; vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: #fafafe; }
.row-link { cursor: pointer; }
.empty-state { padding: 60px 20px; text-align: center; color: var(--ink-soft); }

/* ---------------- Forms / filters ---------------- */
.toolbar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 14px; }
.field { padding: 8px 12px; border: 1px solid var(--border); border-radius: 9px; background: var(--surface); min-width: 150px; }
.field:focus, select:focus, input:focus { outline: 3px solid var(--accent-soft); border-color: var(--accent); }

.btn { border: 1px solid var(--border); background: var(--surface); padding: 8px 16px; border-radius: 9px; font-size: 13.5px; font-weight: 600; color: var(--ink); }
.btn:hover { border-color: var(--accent); color: var(--accent-strong); }
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-strong); border-color: var(--accent-strong); color: #fff; }
.btn-primary:disabled, .btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-danger { color: var(--status-incomplete); border-color: var(--status-incomplete-bg); }

/* ---------------- Pagination ---------------- */
.pagination { display: flex; align-items: center; justify-content: space-between; padding: 13px 16px; font-size: 12.5px; color: var(--ink-soft); }
.pagination .controls { display: flex; gap: 6px; }

/* ---------------- Login ---------------- */
.login-shell { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(160deg, var(--sidebar-from), var(--sidebar-to)); }
.login-card { background: var(--surface); border-radius: 18px; padding: 38px 36px; width: 360px; box-shadow: 0 30px 70px rgba(0,0,0,0.35); }
.login-card h1 { font-size: 19px; margin-bottom: 4px; }
.login-card p.hint { color: var(--ink-soft); font-size: 12.5px; margin-top: 0; margin-bottom: 22px; }
.login-card label { display: block; font-size: 12.5px; color: var(--ink-soft); margin-bottom: 6px; margin-top: 14px; }
.login-card input { width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 9px; }
.login-error { margin-top: 12px; color: var(--status-incomplete); font-size: 12.5px; }
.demo-note { margin-top: 20px; font-size: 11.5px; color: var(--ink-soft); background: var(--bg); border-radius: 9px; padding: 10px 12px; line-height: 1.8; }

/* ---------------- Import page ---------------- */
.dropzone { border: 1.5px dashed var(--border); border-radius: var(--radius); padding: 44px 20px; text-align: center; color: var(--ink-soft); background: var(--surface); }
.dropzone.active { border-color: var(--accent); background: var(--accent-soft); }
.diff-summary { display: flex; gap: 12px; flex-wrap: wrap; margin: 18px 0; }
.diff-chip { padding: 10px 16px; border-radius: 12px; font-size: 13px; font-weight: 600; }
.diff-chip .n { font-size: 20px; display: block; }
.chip-new { background: var(--status-done-bg); color: var(--status-done); }
.chip-updated { background: var(--status-progress-bg); color: var(--status-progress); }
.chip-removed { background: var(--status-incomplete-bg); color: var(--status-incomplete); }
.chip-unknown { background: var(--status-none-bg); color: var(--status-none); }
.change-tag { display: inline-block; font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 7px; }
.tag-new { background: var(--status-done-bg); color: var(--status-done); }
.tag-updated { background: var(--status-progress-bg); color: var(--status-progress); }
.tag-removed { background: var(--status-incomplete-bg); color: var(--status-incomplete); }

.muted { color: var(--ink-soft); }
.mt-16 { margin-top: 16px; }
.mb-16 { margin-bottom: 16px; }

/* ---------------- Update page ---------------- */
.update-result { margin-top: 16px; padding: 14px 16px; border-radius: var(--radius-sm); background: var(--status-done-bg); color: var(--status-done); font-size: 13px; }
.update-error { margin-top: 16px; padding: 14px 16px; border-radius: var(--radius-sm); background: var(--status-incomplete-bg); color: var(--status-incomplete); font-size: 13px; }
.spin { display: inline-block; width: 14px; height: 14px; border: 2px solid rgba(255,255,255,0.4); border-top-color: #fff; border-radius: 50%; animation: spin 0.7s linear infinite; vertical-align: middle; margin-left: 6px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------------- Progress bars (dashboard/department pages) ---------------- */
.progress-track { background: var(--status-none-bg); border-radius: 8px; height: 7px; width: 100%; overflow: hidden; }
.progress-fill { background: var(--accent); height: 7px; border-radius: 8px; }

@media (max-width: 900px) {
  .sidebar { position: fixed; z-index: 20; transform: translateX(100%); transition: transform 0.2s ease; }
  .main { padding: 20px 16px 50px; }
}