:root{--color-primary: #2563eb;--color-income: #16a34a;--color-expense: #dc2626;--color-neutral: #64748b;--color-bg: #f8fafc;--color-card: #ffffff;--color-border: #e2e8f0;--color-text: #1e293b;--color-text-muted: #94a3b8;--radius: 8px;--shadow: 0 1px 3px rgba(0, 0, 0, .1);--sidebar-width: 240px}*{box-sizing:border-box}body{margin:0;font-family:Manrope,sans-serif;background:linear-gradient(180deg,#f8fafc,#eef2ff);color:var(--color-text)}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{border:1px solid var(--color-border);background:#fff;border-radius:var(--radius);padding:.7rem 1rem;cursor:pointer}.primary-button{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.link-button{background:transparent;border:0;color:var(--color-primary);padding:.5rem 0}.app-shell{display:grid;grid-template-columns:var(--sidebar-width) 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100%;animation:shimmer 1.4s infinite}.card-skeleton{height:120px}.table-skeleton{height:260px}.auth-screen{min-height:100vh;display:grid;place-items:center;padding:1rem}.auth-card{width:min(440px,100%);padding:1.5rem}.forbidden-card,.page-card{padding:2rem}.file-preview,.result-box,.history-row,.count-chip{padding:.75rem 1rem;border:1px solid var(--color-border);border-radius:var(--radius);background:#f8fafc}.toggle-group{display:inline-flex;gap:.5rem}.toggle-group .active{background:var(--color-primary);color:#fff}.menu-button{display:none}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}@media(max-width:1024px){.kpi-grid,.chart-grid,.filters-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:768px){.app-shell{grid-template-columns:1fr}.sidebar{position:fixed;left:-260px;width:240px;transition:left .2s 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