:root {
  --sidebar-w: 240px;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --success: #16a34a;
  --danger: #dc2626;
  --bg: #f1f5f9;
  --sidebar-bg: #0f172a;
  --sidebar-text: #94a3b8;
  --sidebar-active: #2563eb;
  --card-bg: #ffffff;
  --text: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  min-height: 100vh;
}

/* ── Sidebar ── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--sidebar-bg);
  position: fixed;
  top: 0; left: 0; bottom: 0;
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow-y: auto;
}

.sidebar-logo {
  padding: 24px 20px 16px;
  border-bottom: 1px solid #1e293b;
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-logo img {
  width: 40px;
  height: 40px;
  object-fit: contain;
  border-radius: 8px;
  background: #fff;
  padding: 2px;
}

.sidebar-logo span {
  color: #f1f5f9;
  font-weight: 700;
  font-size: 15px;
  line-height: 1.3;
}

.sidebar nav {
  flex: 1;
  padding: 16px 12px;
}

.sidebar nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--sidebar-text);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 2px;
  transition: background .15s, color .15s;
}

.sidebar nav a:hover { background: #1e293b; color: #e2e8f0; }
.sidebar nav a.active { background: var(--sidebar-active); color: #fff; }
.sidebar nav a svg { flex-shrink: 0; }

.sidebar-bottom {
  padding: 16px 12px;
  border-top: 1px solid #1e293b;
}

.sidebar-bottom a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--sidebar-text);
  text-decoration: none;
  font-size: 14px;
  transition: background .15s, color .15s;
}
.sidebar-bottom a:hover { background: #1e293b; color: #e2e8f0; }

/* ── Main content ── */
.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.topbar {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.topbar h1 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
}

.content { padding: 28px 32px; flex: 1; }

/* ── Cards ── */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}

.card {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 20px 24px;
  border: 1px solid var(--border);
  box-shadow: 0 1px 3px rgba(0,0,0,.06);
}

.card-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.card-value {
  font-size: 26px;
  font-weight: 800;
  line-height: 1;
}

.card-value.green { color: var(--success); }
.card-value.red   { color: var(--danger); }
.card-value.blue  { color: var(--primary); }

.card-sub {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 6px;
}

/* ── Chart box ── */
.chart-box {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 24px;
  border: 1px solid var(--border);
  margin-bottom: 28px;
}

.chart-box h2 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text);
}

/* ── Table panel ── */
.panel {
  background: var(--card-bg);
  border-radius: 12px;
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,.06);
}

.panel-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.panel-header h2 {
  font-size: 15px;
  font-weight: 700;
}

.filters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.filters select,
.filters input[type=text],
.filters input[type=search] {
  padding: 7px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13px;
  background: var(--bg);
  color: var(--text);
  outline: none;
  transition: border-color .15s;
}

.filters select:focus,
.filters input:focus { border-color: var(--primary); }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

thead th {
  padding: 10px 16px;
  text-align: left;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--text-muted);
  background: #f8fafc;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
}

thead th:hover { color: var(--primary); }
thead th.sort-asc::after  { content: ' ↑'; }
thead th.sort-desc::after { content: ' ↓'; }

tbody tr { border-bottom: 1px solid #f1f5f9; transition: background .1s; }
tbody tr:hover { background: #f8fafc; }
tbody td { padding: 11px 16px; vertical-align: middle; }

.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .03em;
}
.badge-green { background: #dcfce7; color: #166534; }
.badge-red   { background: #fee2e2; color: #991b1b; }
.badge-blue  { background: #dbeafe; color: #1e40af; }
.badge-gray  { background: #f1f5f9; color: #475569; }

.amount-positive { color: var(--success); font-weight: 700; }
.amount-negative { color: var(--danger);  font-weight: 700; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: background .15s, opacity .15s;
  white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-sm { padding: 5px 10px; font-size: 12px; border-radius: 6px; }
.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-ghost:hover { background: var(--bg); }
.btn-danger { background: #fee2e2; color: var(--danger); }
.btn-danger:hover { background: #fecaca; }
.btn-success { background: #dcfce7; color: var(--success); }
.btn-success:hover { background: #bbf7d0; }

/* ── Pagination ── */
.pagination {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  padding: 14px 20px;
  border-top: 1px solid var(--border);
  font-size: 13px;
}

.pagination a, .pagination span {
  padding: 5px 10px;
  border-radius: 6px;
  text-decoration: none;
  color: var(--text);
  border: 1px solid var(--border);
}

.pagination a:hover { background: var(--bg); }
.pagination .current { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination .dots { border: none; }

/* ── Form ── */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }

.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.full { grid-column: 1 / -1; }

label { font-size: 13px; font-weight: 600; color: var(--text); }

input[type=text], input[type=date], input[type=number],
select, textarea {
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  color: var(--text);
  background: var(--card-bg);
  outline: none;
  transition: border-color .15s, box-shadow .15s;
  width: 100%;
  font-family: inherit;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}

textarea { resize: vertical; min-height: 80px; }

.form-actions {
  display: flex;
  gap: 10px;
  margin-top: 8px;
  grid-column: 1 / -1;
}

.alert {
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 14px;
  margin-bottom: 16px;
}
.alert-success { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.alert-error   { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }

/* ── Login ── */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 100%);
}

.login-box {
  background: #fff;
  border-radius: 16px;
  padding: 40px 36px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 20px 60px rgba(0,0,0,.3);
}

.login-logo {
  text-align: center;
  margin-bottom: 24px;
}

.login-logo img { width: 80px; height: 80px; object-fit: contain; border-radius: 12px; }
.login-logo h2 { font-size: 20px; font-weight: 800; margin-top: 12px; color: var(--text); }
.login-logo p  { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

/* ── Top 5 table ── */
.top5 td:last-child { text-align: right; font-weight: 700; color: var(--danger); }

/* ── Empty state ── */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-state svg { opacity: .3; margin-bottom: 16px; }
.empty-state p { font-size: 14px; }

/* ── Hamburger button ── */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  border-radius: 8px;
  flex-shrink: 0;
}
.hamburger:hover { background: var(--bg); }
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .25s, opacity .25s;
}

/* Overlay */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 99;
  backdrop-filter: blur(2px);
}
.sidebar-overlay.active { display: block; }

@media (max-width: 768px) {
  .hamburger { display: flex; }

  .sidebar {
    transform: translateX(-100%);
    transition: transform .28s cubic-bezier(.4,0,.2,1);
    z-index: 200;
  }
  .sidebar.open { transform: translateX(0); }

  .main { margin-left: 0; }
  .content { padding: 20px 16px; }
  .topbar { padding: 14px 16px; }

  /* Hamburger → X animation */
  .hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
  .hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  /* Stack chart grid on mobile */
  div[style*="grid-template-columns:1fr 1fr"] {
    grid-template-columns: 1fr !important;
  }
}