:root {
  --bg: #0f1117;
  --bg2: #161b27;
  --bg3: #1e2535;
  --border: #2a3045;
  --accent: #4f8ef7;
  --accent2: #6ee7b7;
  --accent3: #f472b6;
  --accent4: #fb923c;
  --text: #e2e8f0;
  --text2: #94a3b8;
  --text3: #64748b;
  --danger: #f87171;
  --success: #4ade80;
  --warning: #fbbf24;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
}

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

/* ─── Layout ─────────────────────────────────────────────── */
.layout { display: flex; min-height: 100vh; }

.sidebar {
  width: 220px;
  min-width: 220px;
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 0;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.sidebar-brand {
  padding: 24px 20px 20px;
  border-bottom: 1px solid var(--border);
}
.sidebar-brand .logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}
.sidebar-brand .logo svg { flex-shrink: 0; }
.sidebar-brand .tagline { font-size: 11px; color: var(--text3); margin-top: 2px; }

.sidebar-nav { padding: 12px 8px; flex: 1; }
.sidebar-nav .nav-section { margin-bottom: 4px; }
.sidebar-nav .nav-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text3);
  padding: 8px 12px 4px;
}
.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  color: var(--text2);
  font-weight: 500;
  transition: all 0.15s;
  text-decoration: none;
}
.sidebar-nav a:hover { background: var(--bg3); color: var(--text); }
.sidebar-nav a.active { background: rgba(79,142,247,0.15); color: var(--accent); }
.sidebar-nav a svg { width: 16px; height: 16px; flex-shrink: 0; }

.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.topbar {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  padding: 16px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.topbar h1 { font-size: 20px; font-weight: 700; }
.topbar .topbar-right { display: flex; align-items: center; gap: 12px; }

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

/* ─── Cards ──────────────────────────────────────────────── */
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.card-header h2 { font-size: 15px; font-weight: 600; }
.card-body { padding: 20px; }
.card-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  background: var(--bg3);
}

/* ─── Stat Cards ─────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
}
.stat-card.blue::before { background: var(--accent); }
.stat-card.green::before { background: var(--accent2); }
.stat-card.pink::before { background: var(--accent3); }
.stat-card.orange::before { background: var(--accent4); }
.stat-card.red::before { background: var(--danger); }

.stat-label { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text3); margin-bottom: 8px; }
.stat-value { font-size: 26px; font-weight: 700; color: var(--text); line-height: 1; }
.stat-value.big { font-size: 28px; }
.stat-value.green { color: var(--success); }
.stat-value.red { color: var(--danger); }
.stat-sub { font-size: 12px; color: var(--text3); margin-top: 6px; }

/* ─── Grid Layouts ───────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 20px; }

/* ─── Tables ─────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
thead th {
  padding: 10px 14px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text3);
  border-bottom: 1px solid var(--border);
  background: var(--bg3);
  white-space: nowrap;
}
tbody td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  vertical-align: middle;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: rgba(255,255,255,0.02); }
.text-right { text-align: right; }
.text-center { text-align: center; }

/* ─── Badges ─────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  border-radius: 99px;
  font-size: 11px;
  font-weight: 600;
}
.badge.green { background: rgba(74,222,128,0.12); color: var(--success); }
.badge.red { background: rgba(248,113,113,0.12); color: var(--danger); }
.badge.blue { background: rgba(79,142,247,0.12); color: var(--accent); }
.badge.orange { background: rgba(251,146,60,0.15); color: var(--accent4); }
.badge.gray { background: var(--bg3); color: var(--text3); }

/* ─── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.15s;
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; filter: brightness(1.1); }
.btn:active { transform: scale(0.98); }

.btn-primary { background: var(--accent); color: #fff; }
.btn-success { background: rgba(74,222,128,0.15); color: var(--success); border: 1px solid rgba(74,222,128,0.3); }
.btn-danger { background: rgba(248,113,113,0.12); color: var(--danger); border: 1px solid rgba(248,113,113,0.2); }
.btn-ghost { background: var(--bg3); color: var(--text2); border: 1px solid var(--border); }
.btn-sm { padding: 5px 10px; font-size: 12px; border-radius: 6px; }
.btn-icon { padding: 6px; border-radius: 6px; }

/* ─── Forms ──────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text2);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.form-control {
  width: 100%;
  padding: 9px 12px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  transition: border-color 0.15s;
  outline: none;
}
.form-control:focus { border-color: var(--accent); }
.form-control::placeholder { color: var(--text3); }
textarea.form-control { resize: vertical; min-height: 80px; }
select.form-control { cursor: pointer; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.form-hint { font-size: 11px; color: var(--text3); margin-top: 4px; }

/* ─── Modal ──────────────────────────────────────────────── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 100;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow);
}
.modal-header {
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.modal-header h3 { font-size: 16px; font-weight: 700; }
.modal-close {
  background: none;
  border: none;
  color: var(--text3);
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  font-size: 18px;
  line-height: 1;
}
.modal-close:hover { color: var(--text); background: var(--bg3); }
.modal-body { padding: 24px; }
.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

/* ─── Charts ─────────────────────────────────────────────── */
.chart-wrap { position: relative; }
.chart-wrap canvas { max-height: 260px; }

/* ─── Loan cards ─────────────────────────────────────────── */
.loan-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s;
}
.loan-card:hover { border-color: var(--accent); }
.loan-card.inactive { opacity: 0.5; }
.loan-card-header {
  padding: 16px 20px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid var(--border);
}
.loan-card-body { padding: 16px 20px; }
.loan-card-actions { display: flex; gap: 6px; align-items: center; }

.loan-progress-bar {
  height: 6px;
  background: var(--bg3);
  border-radius: 99px;
  overflow: hidden;
  margin: 8px 0;
}
.loan-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius: 99px;
  transition: width 0.5s ease;
}

.data-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.data-row:last-child { border-bottom: none; }
.data-row .label { color: var(--text3); }
.data-row .value { font-weight: 600; }

/* ─── Transaction list ───────────────────────────────────── */
.tx-list { display: flex; flex-direction: column; gap: 1px; }
.tx-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.tx-item:last-child { border-bottom: none; }
.tx-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 16px;
}
.tx-icon.income { background: rgba(74,222,128,0.12); }
.tx-icon.expense { background: rgba(248,113,113,0.12); }
.tx-icon.deposit { background: rgba(79,142,247,0.12); }
.tx-icon.withdrawal { background: rgba(251,146,60,0.12); }
.tx-info { flex: 1; min-width: 0; }
.tx-desc { font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tx-meta { font-size: 11px; color: var(--text3); margin-top: 2px; }
.tx-amount { font-weight: 700; font-size: 15px; white-space: nowrap; }
.tx-amount.positive { color: var(--success); }
.tx-amount.negative { color: var(--danger); }

/* ─── Alert / empty state ────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--text3);
}
.empty-state svg { width: 48px; height: 48px; margin-bottom: 12px; opacity: 0.4; }
.empty-state p { font-size: 15px; margin-bottom: 4px; color: var(--text2); }
.empty-state small { font-size: 12px; }

.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  font-size: 13px;
}
.alert-info { background: rgba(79,142,247,0.1); border: 1px solid rgba(79,142,247,0.2); color: var(--accent); }
.alert-success { background: rgba(74,222,128,0.1); border: 1px solid rgba(74,222,128,0.2); color: var(--success); }
.alert-warning { background: rgba(251,191,36,0.1); border: 1px solid rgba(251,191,36,0.2); color: var(--warning); }

/* ─── Utilities ──────────────────────────────────────────── */
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.flex-1 { flex: 1; }
.text-muted { color: var(--text3); }
.text-sm { font-size: 12px; }
.fw-bold { font-weight: 700; }
.w-full { width: 100%; }

.positive { color: var(--success); }
.negative { color: var(--danger); }
.text-accent { color: var(--accent); }

/* ─── Calculator result ──────────────────────────────────── */
.calc-result {
  background: linear-gradient(135deg, rgba(79,142,247,0.08), rgba(110,231,183,0.06));
  border: 1px solid rgba(79,142,247,0.2);
  border-radius: var(--radius);
  padding: 24px;
}
.calc-result .big-stat {
  font-size: 36px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 4px;
}
.calc-result .big-stat-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text3);
  margin-bottom: 20px;
}

/* ─── Scrollbar ──────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text3); }

/* ─── Tabs ───────────────────────────────────────────────── */
.tabs {
  display: flex;
  gap: 2px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}
.tab {
  padding: 10px 16px;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  color: var(--text3);
  border: none;
  background: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all 0.15s;
}
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab:hover:not(.active) { color: var(--text2); background: var(--bg3); }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* ─── Hamburger button (mobile only) ─────────────────────── */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
  padding: 4px;
  border-radius: 6px;
  align-items: center;
  flex-shrink: 0;
}
.menu-toggle:hover { background: var(--bg3); }

/* ─── Sidebar backdrop (mobile) ──────────────────────────── */
.sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 99;
}
.sidebar-backdrop.open { display: block; }

@media (max-width: 768px) {
  .menu-toggle { display: flex; }
  .sidebar {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 100;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    box-shadow: 4px 0 24px rgba(0,0,0,0.4);
  }
  .sidebar.open { transform: translateX(0); }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .form-row, .form-row-3 { grid-template-columns: 1fr; }
  .content { padding: 16px; }
  .topbar { padding: 12px 16px; }
}

/* ─── Sidebar footer / logout ────────────────────────────── */
.sidebar-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  margin-top: auto;
}
.sidebar-user {
  font-size: 12px;
  color: var(--text3);
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.logout-btn {
  background: none;
  border: none;
  color: var(--text3);
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  transition: color 0.15s;
}
.logout-btn:hover { color: var(--danger, #ef4444); }