:root{--navy:#0A2472;--ink:#06143F;--amber:#FFBA08;--bg:#F5F7FC;--line:#E3E8F4;--mute:#5B6684}
*{box-sizing:border-box;margin:0}
body{font:400 1rem/1.55 'Karla',system-ui,sans-serif;background:var(--bg);color:#1A2340;display:grid;grid-template-columns:240px 1fr;min-height:100vh}
aside{background:var(--ink);color:#fff;padding:1.2rem 1rem;display:flex;flex-direction:column;gap:1.2rem;position:sticky;top:0;height:100vh;overflow-y:auto;align-self:start}
aside img{filter:brightness(0) invert(1)}
aside nav{display:grid;gap:.25rem}
aside nav a{color:rgba(255,255,255,.75);padding:.5rem .9rem;border-radius:12px;text-decoration:none;font-weight:500}
aside nav a:hover{background:rgba(255,255,255,.08)}
aside nav a.on{background:var(--amber);color:var(--ink);font-weight:700}
.who{margin-top:auto;padding-top:1rem;border-top:1px solid rgba(255,255,255,.12);display:grid;font-size:.92rem}.who span{color:rgba(255,255,255,.55);text-transform:capitalize}.who a{color:var(--amber);margin-top:.5rem}
main{padding:2.2rem 2.5rem;max-width:1100px;width:100%}
h1{font:700 1.8rem 'Baloo 2';color:var(--ink);margin-bottom:1.4rem}
h2{font:600 1.15rem 'Baloo 2';margin-bottom:.8rem}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-bottom:1.6rem}
.card,.box{background:#fff;border-radius:18px;padding:1.2rem 1.3rem;border:1px solid var(--line)}
.card span{color:var(--mute);font-size:.92rem}.card b{display:block;font:700 1.9rem 'Baloo 2';color:var(--navy)}
.box{margin-bottom:1.4rem;overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:.96rem}
th{text-align:left;color:var(--mute);font-weight:500;padding:.5rem .6rem;border-bottom:1px solid var(--line)}
td{padding:.65rem .6rem;border-bottom:1px solid var(--line);vertical-align:middle}
tr:last-child td{border:0}
.tag{padding:.1rem .65rem;border-radius:999px;font-size:.85rem;font-weight:700;background:#FFF3CC;color:#7a5600}
.tag.paid,.tag.active{background:#DDF5E5;color:#14633a}.tag.late{background:#FDE0E0;color:#8c1d1d}
form.inline{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:.7rem;align-items:end}
label{display:grid;gap:.25rem;font-weight:700;font-size:.9rem}
input,select,textarea{font:inherit;padding:.6rem .8rem;border:1px solid var(--line);border-radius:10px;background:#fff;width:100%}
input:focus,select:focus{outline:2px solid var(--navy)}
button,.btn{font:700 .95rem 'Karla';background:var(--navy);color:#fff;border:0;border-radius:999px;padding:.6rem 1.2rem;cursor:pointer;text-decoration:none;display:inline-block}
button.ghost{background:#fff;color:var(--navy);border:1px solid var(--line)}button.danger{background:#fff;color:#a32020;border:1px solid #f0c8c8}
.flash{background:#DDF5E5;color:#14633a;padding:.7rem 1rem;border-radius:12px;margin-bottom:1.2rem}
.err{background:#FDE0E0;color:#8c1d1d;padding:.7rem 1rem;border-radius:12px}
.login{grid-column:1/-1;display:grid;place-items:center;background:linear-gradient(160deg,var(--navy),var(--ink))}
.login form{background:#fff;padding:2.2rem;border-radius:26px;width:min(380px,92vw);display:grid;gap:1rem}
@media(max-width:860px){body{grid-template-columns:1fr}aside{position:static;height:auto;flex-direction:row;flex-wrap:wrap;align-items:center;padding:1rem}aside nav{display:flex;flex-wrap:wrap}.who{margin:0 0 0 auto}main{padding:1.2rem}.cards{grid-template-columns:1fr 1fr}}