:root{--blue:#2628dd;--red:#ff2e3e;--ink:#17182d;--muted:#70738a;--line:#e7e8f2;--bg:#f6f7fb;--green:#15966b;--shadow:0 12px 32px rgba(24,28,82,.08)}*{box-sizing:border-box}body{margin:0;font-family:Inter,Segoe UI,Arial,sans-serif;color:var(--ink);background:var(--bg)}a{color:inherit;text-decoration:none}.app{display:grid;grid-template-columns:245px 1fr;min-height:100vh}.side{background:#fff;border-right:1px solid var(--line);padding:26px 18px;position:sticky;top:0;height:100vh}.logo{width:170px;display:block;margin:0 auto 32px}.nav a{display:flex;gap:12px;align-items:center;padding:12px 14px;margin:4px 0;border-radius:12px;color:var(--muted);font-weight:650}.nav a:hover,.nav a.active{background:#eeeeff;color:var(--blue)}.sidefoot{position:absolute;bottom:24px;left:24px;color:var(--muted)}main{padding:30px;max-width:1500px;width:100%}.top{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.top h1{margin:0;font-size:28px}.month{display:flex;gap:8px;align-items:center;background:#fff;padding:7px;border:1px solid var(--line);border-radius:12px}.month input{border:0}.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:18px}.card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;box-shadow:var(--shadow)}.metric{grid-column:span 3}.metric small{color:var(--muted)}.metric strong{display:block;font-size:27px;margin-top:8px}.metric.in strong{color:var(--green)}.metric.out strong{color:var(--red)}.wide{grid-column:span 8}.narrow{grid-column:span 4}.full{grid-column:1/-1}.card h2{font-size:18px;margin:0 0 16px}table{border-collapse:collapse;width:100%}th,td{text-align:left;padding:12px 9px;border-bottom:1px solid var(--line);font-size:14px}th{color:var(--muted);font-weight:600}.amount{text-align:right;font-weight:700}.badge{display:inline-block;padding:5px 9px;border-radius:20px;background:#eeeefe;color:var(--blue);font-size:12px;font-weight:700}.badge.open{background:#fff0e8;color:#bd4b11}.badge.paid{background:#e7f7f0;color:var(--green)}.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:10px;background:var(--blue);color:#fff;padding:10px 14px;font-weight:700;cursor:pointer}.btn.light{background:#eeeefe;color:var(--blue)}.btn.danger{background:#fff0f1;color:#cf2030}.actions{display:flex;gap:7px;flex-wrap:wrap}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.field{display:flex;flex-direction:column;gap:6px}.field.full{grid-column:1/-1}label{font-size:13px;font-weight:700}input,select,textarea{font:inherit;padding:11px;border:1px solid #d9dbea;border-radius:10px;background:#fff;min-width:0}textarea{min-height:80px}.flash{padding:13px 16px;border-radius:12px;background:#e8f7f0;color:#096b4b;margin-bottom:18px}.flash.error{background:#fff0f1;color:#b31b29}.empty{color:var(--muted);text-align:center;padding:25px}.bar{height:9px;background:#ececf5;border-radius:8px;overflow:hidden}.bar i{display:block;height:100%;background:var(--blue)}.login-shell{min-height:100vh;display:grid;place-items:center;padding:24px;background:linear-gradient(145deg,#f4f4ff,#fff)}.login{width:min(430px,100%)}.login .logo{width:200px}.login h1{text-align:center}.login p{text-align:center;color:var(--muted)}.stack{display:grid;gap:14px}.login .btn{width:100%;padding:13px}@media(max-width:900px){.app{grid-template-columns:1fr}.side{height:auto;position:relative;padding:14px}.side .logo{width:130px;margin:0 0 12px}.nav{display:flex;overflow:auto}.nav a{white-space:nowrap}.sidefoot{display:none}main{padding:18px}.metric{grid-column:span 6}.wide,.narrow{grid-column:1/-1}}@media(max-width:560px){.metric{grid-column:1/-1}.form-grid{grid-template-columns:1fr}.top{align-items:flex-start;gap:12px;flex-direction:column}.card{overflow:auto}}