:root{--bg: #f5f6f8;--card: #ffffff;--border: #e2e5ea;--text: #1a1d23;--text-muted: #6b7280;--accent: #2f6fed;--positive: #1a9c5c;--negative: #d13c3c;font-family:-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}.loading,.full-screen{display:flex;align-items:center;justify-content:center;height:100vh;color:var(--text-muted)}.login-screen{display:flex;align-items:center;justify-content:center;height:100vh}.login-card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:32px;width:320px;display:flex;flex-direction:column;gap:14px;box-shadow:0 4px 20px #0000000d}.login-card h1{font-size:18px;margin:0 0 8px}.login-card label{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--text-muted)}.login-card input{padding:9px 10px;border:1px solid var(--border);border-radius:8px;font-size:14px}.login-card button{padding:10px;border:none;border-radius:8px;background:var(--accent);color:#fff;font-size:14px;cursor:pointer}.login-card button:disabled{opacity:.6}.app-shell{display:flex;flex-direction:column;min-height:100vh}.topbar{display:flex;align-items:center;gap:24px;padding:14px 24px;background:var(--card);border-bottom:1px solid var(--border)}.topbar .brand{font-weight:600}.topbar nav{display:flex;gap:16px;flex:1}.topbar nav a{color:var(--text-muted);text-decoration:none;font-size:14px;padding:6px 0;border-bottom:2px solid transparent}.topbar nav a.active{color:var(--text);border-bottom-color:var(--accent)}.user-menu{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-muted)}.user-menu button{border:1px solid var(--border);background:none;border-radius:6px;padding:5px 10px;cursor:pointer}main{padding:24px;max-width:1100px;width:100%;margin:0 auto}.page h1{font-size:20px;margin:0 0 8px}.hint{color:var(--text-muted);font-size:13px;max-width:700px}.page-header{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-bottom:20px}.period-picker{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.period-tabs{display:flex;background:var(--card);border:1px solid var(--border);border-radius:8px;overflow:hidden}.tab{padding:7px 14px;border:none;background:none;cursor:pointer;font-size:13px;color:var(--text-muted)}.tab.active{background:var(--accent);color:#fff}.custom-range{display:flex;align-items:center;gap:6px}.custom-range input{padding:6px;border:1px solid var(--border);border-radius:6px}.sync-status{font-size:12px;color:var(--text-muted)}.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-bottom:24px}.tile{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:14px 16px}.tile-emphasis{border-color:var(--accent)}.tile-label{font-size:12px;color:var(--text-muted);margin-bottom:6px}.tile-value{font-size:20px;font-weight:600}.tile-value.negative{color:var(--negative)}.chart-card,.table-card{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:18px;margin-bottom:20px}.chart-card h2,.table-card h2{font-size:14px;margin:0 0 12px;color:var(--text-muted);font-weight:600}table{width:100%;border-collapse:collapse;font-size:13px}th,td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--border)}th{color:var(--text-muted);font-weight:500;font-size:12px}td.mono{font-family:ui-monospace,monospace}td.positive{color:var(--positive)}td.negative{color:var(--negative)}td.empty{text-align:center;color:var(--text-muted);padding:24px}.cost-form{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0}.cost-form input,.cost-form select{padding:8px 10px;border:1px solid var(--border);border-radius:8px;font-size:13px}.cost-form button{padding:8px 16px;border:none;border-radius:8px;background:var(--accent);color:#fff;cursor:pointer}.error{color:var(--negative);font-size:13px;margin:8px 0}