:root {
  --bg: #0f1115;
  --card: #181b22;
  --card-hover: #1e222b;
  --accent: #4F8EF7;
  --accent-dim: #3d6fc4;
  --success: #00C853;
  --danger: #FF5252;
  --warning: #FF9800;
  --text: #FFFFFF;
  --text-secondary: #A8B3C5;
  --border: rgba(255, 255, 255, 0.08);
  --radius: 12px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: #6ea3ff; }

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #2a2f3a; border-radius: 8px; }

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

.sidebar {
  width: 260px;
  background: var(--card);
  border-right: 1px solid var(--border);
  padding: 24px 16px;
  position: fixed;
  top: 0; bottom: 0; left: 0;
  overflow-y: auto;
  transition: transform 0.25s ease;
  z-index: 1030;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 8px 24px;
  font-weight: 700;
  font-size: 1.15rem;
}

.sidebar-brand .logo-dot {
  width: 34px; height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #7c4dff);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800;
  flex-shrink: 0;
}

.nav-section-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  padding: 16px 12px 6px;
}

.sidebar .nav-link {
  color: var(--text-secondary);
  border-radius: 10px;
  padding: 10px 12px;
  margin-bottom: 2px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.925rem;
  font-weight: 500;
  transition: all 0.15s ease;
}

.sidebar .nav-link:hover { background: rgba(255,255,255,0.05); color: var(--text); }
.sidebar .nav-link.active { background: var(--accent); color: #fff; }
.sidebar .nav-link i { width: 18px; text-align: center; }

.main-content {
  margin-left: 260px;
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.topbar {
  background: rgba(15,17,21,0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 1020;
}

.topbar .search-box {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 14px;
  color: var(--text);
  min-width: 260px;
}
.topbar .search-box:focus { outline: none; border-color: var(--accent); }

.page-body { padding: 28px; flex: 1; }

.sidebar-toggle { display: none; }

@media (max-width: 991px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); box-shadow: var(--shadow); }
  .main-content { margin-left: 0; }
  .sidebar-toggle { display: inline-flex; }
  .topbar .search-box { min-width: 140px; }
}

/* ---------------- Cards ---------------- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.stat-card {
  padding: 20px;
  position: relative;
  overflow: hidden;
}
.stat-card .stat-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  margin-bottom: 12px;
}
.stat-card .stat-label { color: var(--text-secondary); font-size: 0.82rem; margin-bottom: 4px; }
.stat-card .stat-value { font-size: 1.6rem; font-weight: 700; }

.icon-accent { background: rgba(79,142,247,0.15); color: var(--accent); }
.icon-success { background: rgba(0,200,83,0.15); color: var(--success); }
.icon-danger { background: rgba(255,82,82,0.15); color: var(--danger); }
.icon-warning { background: rgba(255,152,0,0.15); color: var(--warning); }

/* ---------------- Forms ---------------- */
.form-control, .form-select {
  background: #10131a;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 14px;
}
.form-control:focus, .form-select:focus {
  background: #10131a;
  border-color: var(--accent);
  color: var(--text);
  box-shadow: 0 0 0 3px rgba(79,142,247,0.15);
}
.form-control::placeholder { color: #616a7a; }
.form-label { color: var(--text-secondary); font-size: 0.86rem; font-weight: 500; margin-bottom: 6px; }
.form-check-input { background-color: #10131a; border-color: var(--border); }
.invalid-feedback { color: var(--danger); font-size: 0.8rem; }
.is-invalid { border-color: var(--danger) !important; }

/* ---------------- Buttons ---------------- */
.btn-accent {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 10px 20px;
  font-weight: 600;
  transition: all 0.15s ease;
}
.btn-accent:hover { background: var(--accent-dim); color: #fff; }

.btn-outline-light-custom {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 20px;
}
.btn-outline-light-custom:hover { background: rgba(255,255,255,0.05); color: var(--text); }

.btn-success-soft { background: rgba(0,200,83,0.15); color: var(--success); border: none; border-radius: 8px; }
.btn-danger-soft { background: rgba(255,82,82,0.15); color: var(--danger); border: none; border-radius: 8px; }

/* ---------------- Tables ---------------- */
.table-custom { color: var(--text); margin-bottom: 0; }
.table-custom thead th {
  color: var(--text-secondary);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  padding: 12px 16px;
}
.table-custom tbody td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.table-custom tbody tr:hover { background: rgba(255,255,255,0.02); }
.table-custom tbody tr:last-child td { border-bottom: none; }

.badge-income { background: rgba(0,200,83,0.15); color: var(--success); padding: 5px 12px; border-radius: 20px; font-size: 0.78rem; font-weight: 600; }
.badge-expense { background: rgba(255,82,82,0.15); color: var(--danger); padding: 5px 12px; border-radius: 20px; font-size: 0.78rem; font-weight: 600; }

/* ---------------- Misc ---------------- */
.glass {
  background: rgba(24,27,34,0.7);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
}

.auth-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 20% 20%, rgba(79,142,247,0.12), transparent 40%),
              radial-gradient(circle at 80% 80%, rgba(124,77,255,0.1), transparent 40%),
              var(--bg);
  padding: 20px;
}
.auth-card { width: 100%; max-width: 420px; padding: 36px; border-radius: 16px; }

.toast-container-custom { position: fixed; top: 20px; right: 20px; z-index: 2000; }
.toast-custom {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px;
  margin-bottom: 10px;
  box-shadow: var(--shadow);
  min-width: 280px;
  animation: slideIn 0.25s ease;
}
@keyframes slideIn { from { transform: translateX(30px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

.empty-state { text-align: center; padding: 60px 20px; color: var(--text-secondary); }
.empty-state i { font-size: 2.5rem; margin-bottom: 12px; opacity: 0.5; }

.pagination-custom { display: flex; gap: 6px; align-items: center; }
.pagination-custom a, .pagination-custom span {
  padding: 8px 13px; border-radius: 8px; color: var(--text-secondary);
  border: 1px solid var(--border); font-size: 0.85rem;
}
.pagination-custom a:hover { background: rgba(255,255,255,0.05); color: var(--text); }
.pagination-custom .active { background: var(--accent); color: #fff; border-color: var(--accent); }

.modal-content { background: var(--card); color: var(--text); border: 1px solid var(--border); border-radius: var(--radius); }
.modal-header, .modal-footer { border-color: var(--border); }
.btn-close { filter: invert(1); }

.error-page { min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 20px; }
.error-page h1 { font-size: 5rem; font-weight: 800; color: var(--accent); }