:root {
  --primary: #2563eb;
  --primary-light: #dbeafe;
  --success: #16a34a;
  --success-light: #dcfce7;
  --warning: #d97706;
  --warning-light: #fef3c7;
  --danger: #dc2626;
  --danger-light: #fee2e2;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-700: #374151;
  --gray-900: #111827;
  --kovera: #7c3aed;
  --kovera-light: #ede9fe;
  --vidika-blue: #2563eb;
  --vidika-yellow: #FFDE59;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: var(--gray-50); color: var(--gray-900); }
.app-header { background: white; border-bottom: 1px solid var(--gray-200); padding: 16px 32px; display: flex; align-items: center; justify-content: space-between; position: sticky; top: 0; z-index: 100; }
.app-header h1 { font-size: 20px; font-weight: 700; color: var(--gray-900); }
.app-header h1 span { color: var(--primary); }
.header-meta { font-size: 13px; color: var(--gray-500); }
.tabs { display: flex; gap: 4px; background: var(--gray-100); padding: 4px; border-radius: 10px; margin: 20px 32px 0; flex-wrap: wrap; }
.tab { padding: 10px 20px; border-radius: 8px; font-size: 14px; font-weight: 500; cursor: pointer; border: none; background: transparent; color: var(--gray-500); transition: all 0.2s; }
.tab.active { background: white; color: var(--gray-900); box-shadow: 0 1px 3px rgba(0,0,0,0.1); }
.tab:hover:not(.active) { color: var(--gray-700); }
.tab.tablink { text-decoration: none; display: inline-block; }
.content { padding: 24px 32px; max-width: 1400px; margin: 0 auto; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.kpi-card { background: white; border-radius: 12px; padding: 20px; border: 1px solid var(--gray-200); }
.kpi-label { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; color: var(--gray-500); margin-bottom: 8px; }
.kpi-value { font-size: 28px; font-weight: 700; color: var(--gray-900); }
.kpi-value.positive { color: var(--success); }
.kpi-value.negative { color: var(--danger); }
.kpi-value.purple { color: var(--kovera); }
.kpi-sub { font-size: 12px; color: var(--gray-500); margin-top: 4px; }
.card { background: white; border-radius: 12px; border: 1px solid var(--gray-200); margin-bottom: 20px; overflow: hidden; }
.card-header { padding: 16px 20px; border-bottom: 1px solid var(--gray-100); display: flex; justify-content: space-between; align-items: center; }
.card-header h3 { font-size: 15px; font-weight: 600; }
.card-body { padding: 20px; }
.chart-container { position: relative; height: 300px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { text-align: left; padding: 10px 12px; font-weight: 600; color: var(--gray-500); font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; border-bottom: 2px solid var(--gray-200); }
td { padding: 10px 12px; border-bottom: 1px solid var(--gray-100); }
tr:hover { background: var(--gray-50); }
.badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 11px; font-weight: 600; }
.badge-green { background: var(--success-light); color: var(--success); }
.badge-yellow { background: var(--warning-light); color: var(--warning); }
.badge-red { background: var(--danger-light); color: var(--danger); }
.badge-blue { background: var(--primary-light); color: var(--primary); }
.badge-purple { background: var(--kovera-light); color: var(--kovera); }
.amount { font-family: 'SF Mono', 'Fira Code', monospace; font-weight: 600; }
.amount.income { color: var(--success); }
.amount.expense { color: var(--danger); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; }
@media (max-width: 900px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }
.alert-bar { padding: 12px 20px; border-radius: 8px; font-size: 13px; display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.alert-bar.info { background: var(--primary-light); color: var(--primary); }
.alert-bar.warn { background: var(--warning-light); color: var(--warning); }
.alert-bar.danger { background: var(--danger-light); color: var(--danger); }
.update-note { font-size: 11px; color: var(--gray-400); text-align: right; padding: 8px 0; }
.muted { color: var(--gray-500); font-size: 13px; }

/* === login === */
.login-body { display: flex; min-height: 100vh; align-items: center; justify-content: center; background: var(--gray-100); }
.login-card { background: #fff; border: 1px solid var(--gray-200); border-radius: 14px; padding: 32px; width: 320px; display: flex; flex-direction: column; gap: 12px; box-shadow: 0 4px 24px rgba(0,0,0,0.06); }
.login-card h1 { font-size: 26px; color: var(--primary); text-align: center; letter-spacing: 1px; }
.login-card p { margin: 0; }
.login-card input { padding: 11px 12px; border: 1px solid var(--gray-300); border-radius: 8px; font-size: 14px; }
.login-card input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-light); }
.login-card button { padding: 11px; background: var(--primary); color: #fff; border: none; border-radius: 8px; font-weight: 600; cursor: pointer; font-size: 14px; }
.login-card button:hover { background: #1d4ed8; }
.login-error { background: var(--danger-light); color: var(--danger); padding: 9px 12px; border-radius: 8px; font-size: 13px; }

/* === formularios === */
.form-card { max-width: 460px; }
.form-card label { display: block; font-size: 12px; font-weight: 600; color: var(--gray-500); margin: 14px 0 4px; text-transform: uppercase; letter-spacing: 0.5px; }
.form-card input[type=password], .form-card input[type=text] { width: 100%; padding: 11px 12px; border: 1px solid var(--gray-300); border-radius: 8px; font-size: 14px; }
.form-card input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-light); }
.checkbox-row { display: flex; align-items: center; gap: 8px; margin-top: 10px; }
.btn { margin-top: 16px; padding: 11px 18px; background: var(--primary); color: #fff; border: none; border-radius: 8px; font-weight: 600; cursor: pointer; font-size: 14px; }
.btn:hover { background: #1d4ed8; }
.flash-ok { background: var(--success-light); color: var(--success); padding: 10px 12px; border-radius: 8px; font-size: 13px; margin-bottom: 8px; }
.flash-err { background: var(--danger-light); color: var(--danger); padding: 10px 12px; border-radius: 8px; font-size: 13px; margin-bottom: 8px; }

/* === nav usuario === */
.user-box { display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--gray-500); }
.user-box a { color: var(--primary); text-decoration: none; }
.user-box a:hover { text-decoration: underline; }