:root {
  --bg: #f8fafc;
  --bg-dark: #0f172a;
  --surface: #ffffff;
  --surface-hover: #f1f5f9;
  --ink: #0f172a;
  --ink-secondary: #64748b;
  --ink-muted: #94a3b8;
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --primary: #3b82f6;
  --primary-dark: #2563eb;
  --primary-light: #eff6ff;
  --success: #10b981;
  --success-light: #ecfdf5;
  --danger: #ef4444;
  --danger-light: #fef2f2;
  --warning: #f59e0b;
  --warning-light: #fffbeb;
  --purple: #8b5cf6;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-xs: 6px;
  --shadow: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,.07), 0 2px 4px -2px rgba(0,0,0,.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.08), 0 4px 6px -4px rgba(0,0,0,.05);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --transition: .15s cubic-bezier(.4,0,.2,1);
}

*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; font-family: var(--font); font-size: 14px; background: var(--bg); color: var(--ink); -webkit-font-smoothing: antialiased; line-height: 1.5; }
button, input, select { font: inherit; }
button { cursor: pointer; }
.hidden { display: none !important; }

/* Login */
.login-shell { min-height: 100vh; display: grid; place-items: center; padding: 24px; background: var(--bg-dark); background-image: radial-gradient(ellipse at top, #1e3a5f 0%, transparent 50%), radial-gradient(ellipse at bottom right, #1e1b4b 0%, transparent 50%); }
.login-panel { width: min(400px, 100%); background: var(--surface); border-radius: 16px; padding: 32px; box-shadow: 0 25px 50px -12px rgba(0,0,0,.4); display: grid; gap: 16px; }
.brand-row { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
.brand-mark { width: 44px; height: 44px; border-radius: 12px; background: linear-gradient(135deg, var(--primary), #06b6d4); display: grid; place-items: center; flex-shrink: 0; }
.login-panel h1 { font-size: 22px; margin: 0; font-weight: 800; }
.login-panel p { margin: 0; color: var(--ink-secondary); font-size: 13px; }
.hint { text-align: center; color: var(--ink-muted); font-size: 12px; margin: 0; }
.error { color: var(--danger); font-weight: 600; font-size: 12px; min-height: 16px; }

/* Forms */
label { display: grid; gap: 4px; font-size: 12px; font-weight: 600; color: var(--ink-secondary); text-transform: uppercase; letter-spacing: .03em; }
input, select { width: 100%; border: 1px solid var(--border); border-radius: var(--radius-xs); background: var(--surface); color: var(--ink); padding: 10px 12px; outline: none; transition: border var(--transition), box-shadow var(--transition); font-size: 14px; }
input:focus, select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(59,130,246,.1); }
.input-search { max-width: 220px; padding: 8px 12px; border-radius: 20px; background: var(--surface-hover); border: 1px solid transparent; }
.input-search:focus { border-color: var(--primary); background: var(--surface); }
.input-month { padding: 8px 12px; border-radius: var(--radius-xs); border: 1px solid var(--border); background: var(--surface); }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 9px 16px; border: none; border-radius: var(--radius-xs); font-weight: 600; font-size: 13px; text-decoration: none; transition: all var(--transition); white-space: nowrap; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); box-shadow: var(--shadow-md); }
.btn-accent { background: linear-gradient(135deg, #10b981, #06b6d4); color: #fff; }
.btn-accent:hover { opacity: .9; }
.btn-ghost { background: transparent; color: var(--ink-secondary); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--surface-hover); color: var(--ink); }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-lg { padding: 12px 20px; font-size: 15px; width: 100%; justify-content: center; }
.btn-icon { display: grid; place-items: center; width: 36px; height: 36px; border: none; background: transparent; border-radius: var(--radius-xs); color: var(--ink-secondary); transition: all var(--transition); }
.btn-icon:hover { background: var(--surface-hover); color: var(--ink); }
.btn-danger { background: var(--danger-light); color: var(--danger); border: 1px solid transparent; }
.btn-danger:hover { border-color: var(--danger); }
.btn-edit { background: var(--primary-light); color: var(--primary); border: 1px solid transparent; }
.btn-edit:hover { border-color: var(--primary); }

/* App Layout */
.app { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.sidebar { position: sticky; top: 0; height: 100vh; background: var(--bg-dark); color: #fff; display: flex; flex-direction: column; z-index: 100; transition: transform .25s; overflow: hidden; }
.sidebar-header { display: flex; align-items: center; gap: 10px; padding: 20px; }
.brand-text { font-weight: 800; font-size: 17px; }
.sidebar-footer { margin-top: auto; padding: 16px; border-top: 1px solid rgba(255,255,255,.08); display: flex; align-items: center; justify-content: space-between; }
.user-info { display: flex; align-items: center; gap: 10px; }
.user-avatar { width: 32px; height: 32px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--purple)); display: grid; place-items: center; font-weight: 700; font-size: 13px; }
.user-name { font-weight: 600; font-size: 13px; }
.user-role { font-size: 11px; color: rgba(255,255,255,.5); }
.sidebar-footer .btn-icon { color: rgba(255,255,255,.5); }
.sidebar-footer .btn-icon:hover { color: #fff; background: rgba(255,255,255,.1); }

/* Navigation */
#nav { display: flex; flex-direction: column; gap: 2px; padding: 8px 12px; }
.nav-item { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border: none; background: transparent; color: rgba(255,255,255,.6); border-radius: var(--radius-sm); font-weight: 500; font-size: 13px; text-align: left; transition: all var(--transition); width: 100%; }
.nav-item svg { flex-shrink: 0; opacity: .7; }
.nav-item:hover { background: rgba(255,255,255,.06); color: rgba(255,255,255,.9); }
.nav-item.active { background: rgba(59,130,246,.15); color: #fff; }
.nav-item.active svg { opacity: 1; color: var(--primary); }

/* Main Content */
.main-content { padding: 24px; min-width: 0; overflow-x: hidden; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 24px; flex-wrap: wrap; }
.topbar-left { display: flex; align-items: center; gap: 12px; }
.topbar h1 { font-size: 24px; margin: 0; font-weight: 800; }
.topbar p { margin: 2px 0 0; color: var(--ink-muted); font-size: 13px; }
.topbar-right { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.hamburger { display: none; }
.page { display: none; }
.page.active { display: block; animation: fadeIn .2s; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }

/* Cards */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-bottom: 16px; box-shadow: var(--shadow); transition: box-shadow var(--transition); }
.card:hover { box-shadow: var(--shadow-md); }
.card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; flex-wrap: wrap; gap: 8px; }
.card-header h3 { margin: 0; font-size: 15px; font-weight: 700; }
.badge { font-size: 11px; font-weight: 600; padding: 3px 8px; border-radius: 20px; background: var(--primary-light); color: var(--primary); }

/* KPIs */
.kpi-row { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 12px; margin-bottom: 20px; }
.kpi-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; position: relative; overflow: hidden; transition: all var(--transition); }
.kpi-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.kpi-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; }
.kpi-card.green::before { background: linear-gradient(90deg, var(--success), #06d6a0); }
.kpi-card.red::before { background: linear-gradient(90deg, var(--danger), #f97316); }
.kpi-card.blue::before { background: linear-gradient(90deg, var(--primary), #8b5cf6); }
.kpi-card.amber::before { background: linear-gradient(90deg, var(--warning), #f59e0b); }
.kpi-label { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; color: var(--ink-muted); margin-bottom: 8px; }
.kpi-value { font-size: 22px; font-weight: 800; }
.kpi-card.green .kpi-value { color: var(--success); }
.kpi-card.red .kpi-value { color: var(--danger); }
.kpi-card.blue .kpi-value { color: var(--primary); }
.kpi-card.clickable { cursor: pointer; }
.kpi-card.clickable:active { transform: scale(.97); }

/* Report Tabs */
.report-tabs { display: flex; gap: 4px; margin-bottom: 16px; overflow-x: auto; padding-bottom: 4px; }
.report-tab { padding: 9px 16px; border: 1px solid var(--border); border-radius: var(--radius-xs); background: var(--surface); color: var(--ink-secondary); font-weight: 600; font-size: 13px; white-space: nowrap; cursor: pointer; transition: all var(--transition); }
.report-tab:hover { background: var(--surface-hover); color: var(--ink); }
.report-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* Charts */
.chart-row { display: grid; grid-template-columns: 2fr 1fr; gap: 16px; margin-bottom: 16px; }
.chart-card, .chart-card-sm { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.chart-card canvas, .chart-card-sm canvas { width: 100% !important; }
.chart-legend { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
.legend-item { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--ink-secondary); }
.legend-dot { width: 10px; height: 10px; border-radius: 50%; }

/* Progress bars */
.progress-list { display: grid; gap: 12px; }
.progress-item { display: grid; gap: 4px; }
.progress-top { display: flex; justify-content: space-between; align-items: center; font-size: 13px; }
.progress-top strong { font-weight: 600; color: var(--ink); }
.progress-top span { color: var(--ink-secondary); font-weight: 500; }
.progress-track { height: 6px; background: var(--border-light); border-radius: 99px; overflow: hidden; }
.progress-fill { height: 100%; border-radius: 99px; background: linear-gradient(90deg, var(--primary), #06b6d4); transition: width .5s; }

/* Grid */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }

/* Forms */
.form-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 14px; }
.span-full { grid-column: 1 / -1; }
.form-footer { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; padding-top: 8px; }
.preview-text { font-size: 13px; font-weight: 600; color: var(--primary); }

/* Tables */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 10px 12px; text-align: left; white-space: nowrap; border-bottom: 1px solid var(--border-light); }
th { font-size: 11px; text-transform: uppercase; letter-spacing: .04em; color: var(--ink-muted); font-weight: 600; background: var(--bg); position: sticky; top: 0; }
td { font-size: 13px; }
tr:hover td { background: var(--surface-hover); }
.money { font-weight: 700; color: var(--success); }
.negative { font-weight: 700; color: var(--danger); }
.pill { display: inline-flex; padding: 3px 10px; border-radius: 20px; font-size: 11px; font-weight: 600; }
.pill-blue { background: var(--primary-light); color: var(--primary); }
.pill-green { background: var(--success-light); color: var(--success); }
.pill-red { background: var(--danger-light); color: var(--danger); }
.pill-amber { background: var(--warning-light); color: var(--warning); }
.actions-cell { display: flex; gap: 4px; }

/* Toast */
.toast { position: fixed; bottom: 24px; right: 24px; background: var(--bg-dark); color: #fff; border-radius: var(--radius-sm); padding: 12px 20px; box-shadow: var(--shadow-lg); opacity: 0; transform: translateY(12px); transition: .2s; z-index: 9999; font-weight: 500; font-size: 13px; }
.toast.show { opacity: 1; transform: translateY(0); }

/* Modal */
.modal-overlay { position: fixed; inset: 0; background: rgba(15,23,42,.6); display: grid; place-items: center; z-index: 1000; padding: 16px; backdrop-filter: blur(4px); }
.modal { background: var(--surface); border-radius: var(--radius); width: min(520px, 100%); max-height: 85vh; overflow-y: auto; box-shadow: 0 25px 50px -12px rgba(0,0,0,.25); }
.modal-header { display: flex; justify-content: space-between; align-items: center; padding: 20px 24px; border-bottom: 1px solid var(--border); }
.modal-header h3 { margin: 0; font-size: 17px; font-weight: 700; }
.modal-body { padding: 20px 24px; }
.modal-footer { display: flex; justify-content: flex-end; gap: 8px; padding: 16px 24px; border-top: 1px solid var(--border); }

/* Report */
.report { max-width: 900px; }
.report h2 { font-size: 24px; margin: 0 0 4px; }
.report .summary-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 10px; margin: 20px 0; }
.report .summary-grid div { border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 14px; }
.report h3 { font-size: 15px; border-bottom: 1px solid var(--border); padding-bottom: 8px; margin-top: 24px; }

/* Responsive */
@media (max-width: 1024px) {
  .chart-row { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { position: fixed; top: 0; left: 0; width: 260px; height: 100vh; transform: translateX(-100%); z-index: 200; }
  .sidebar.open { transform: translateX(0); }
  .hamburger { display: grid; }
  .main-content { padding: 16px; }
  .topbar { flex-direction: column; align-items: stretch; }
  .topbar-right { justify-content: flex-end; }
  .kpi-row { grid-template-columns: repeat(2, 1fr); }
  .form-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .kpi-row { grid-template-columns: 1fr; }
  .topbar-right { flex-direction: column; }
}
@media print {
  .sidebar, .topbar, .modal-overlay, #toast { display: none !important; }
  .app { display: block; }
  .main-content { padding: 0; }
  .page { display: block; }
  .page:not(#page-report) { display: none; }
}