:root{--bg: #f5f6f8;--card: #ffffff;--border: #e2e5ea;--text: #1f2430;--muted: #8a92a3;--accent: #3a6df0;--income: #1f9d55;--expense: #d64545}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text)}.app-header{background:var(--card);border-bottom:1px solid var(--border);padding:16px 24px}.app-header h1{margin:0 0 12px;font-size:20px}.tabs{display:flex;flex-wrap:wrap;gap:8px}.tab{border:1px solid var(--border);background:var(--bg);border-radius:8px;padding:6px 12px;cursor:pointer;font-size:14px}.tab.active{background:var(--accent);color:#fff;border-color:var(--accent)}.app-main{padding:24px;max-width:1100px;margin:0 auto}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:16px 20px;margin-bottom:20px}h2{margin-top:0}.muted{color:var(--muted)}.data-table{width:100%;border-collapse:collapse;font-size:14px}.data-table th,.data-table td{border-bottom:1px solid var(--border);padding:8px 10px}.data-table th{color:var(--muted);font-weight:600}.income{color:var(--income)}.expense{color:var(--expense)}form.entry-form{display:flex;flex-wrap:wrap;gap:10px;align-items:flex-end}.field{display:flex;flex-direction:column;gap:4px;font-size:13px}.field label{color:var(--muted)}.field input,.field select{padding:6px 8px;border:1px solid var(--border);border-radius:6px;font-size:14px;min-width:120px}.number-field{position:relative;display:inline-block}.number-field input{padding:6px 8px;border:1px solid var(--border);border-radius:6px;font-size:14px;min-width:120px}.number-field input[aria-invalid=true]{border-color:var(--expense)}.number-field-hint{position:absolute;top:calc(100% + 4px);left:0;z-index:20;padding:4px 8px;border-radius:6px;border:1px solid var(--border);background:var(--card);color:var(--expense);font-size:11px;line-height:1.3;white-space:nowrap;box-shadow:0 4px 12px #0000001f;pointer-events:none}button.primary{background:var(--accent);color:#fff;border:none;border-radius:8px;padding:8px 16px;cursor:pointer;font-size:14px}button.link{background:none;border:none;color:var(--accent);cursor:pointer;padding:0;font-size:13px}button.danger{background:none;border:none;color:var(--expense);cursor:pointer;font-size:13px}.metrics{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}.metric{border:1px solid var(--border);border-radius:10px;padding:12px 14px}.metric .label{color:var(--muted);font-size:13px}.metric .value{font-size:20px;font-weight:600;margin-top:4px}.toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}.total-badge{font-size:18px;font-weight:600}.header-row{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:12px}.header-row h1{margin:0}.header-user{display:flex;align-items:center;gap:12px}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.login-card{width:100%;max-width:400px}.login-form{display:flex;flex-direction:column;gap:12px;margin-top:16px}.login-form label{display:flex;flex-direction:column;gap:4px;font-size:14px}.login-form input{padding:8px 10px;border:1px solid var(--border);border-radius:8px;font-size:14px}.btn-primary{background:var(--accent);color:#fff;border:none;border-radius:8px;padding:10px 16px;font-size:14px;cursor:pointer}.btn-primary:disabled{opacity:.6;cursor:default}.link-btn{margin-top:12px;background:none;border:none;color:var(--accent);cursor:pointer;font-size:14px;padding:0}.login-error{color:var(--expense);font-size:14px;margin:0}.field-error{color:var(--expense);font-size:13px;margin:4px 0 0}.guest-banner{margin:0 0 16px;padding:10px 14px;background:var(--card);border:1px solid var(--border);border-radius:8px;font-size:14px}.verify-banner{border-color:var(--income);color:var(--text)}.auth-modal-actions{display:flex;flex-direction:column;gap:8px;margin-top:12px}.guest-hint{font-size:13px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#1f243073;display:flex;align-items:center;justify-content:center;padding:24px;z-index:1000}.modal-card{max-width:420px;width:100%;margin:0}