:root { --bg:#eef2f7; --text:#172033; --muted:#5d6b82; --line:#e3e8f0; --accent:#0f766e; --sidebar:#102033; --sidebar-text:#c5d2e4; --ok:#0f7b4c; --ok-bg:#e5f6ee; --bad:#b42318; --bad-bg:#fdecea; }
* { box-sizing:border-box; }
body { margin:0; font:15px/1.5 "Segoe UI", Ubuntu, sans-serif; color:var(--text); background:var(--bg); }
a { color:var(--accent); }
button, input, select, textarea { font:inherit; color:inherit; }
h1 { font-size:28px; margin:0 0 6px; }
h2 { font-size:18px; margin:22px 0 12px; }
.muted { color:var(--muted); }
.app { min-height:100vh; display:grid; grid-template-columns:240px 1fr; }
aside { background:var(--sidebar); color:var(--sidebar-text); display:flex; flex-direction:column; padding:22px 14px; }
.brand { display:flex; gap:12px; align-items:center; padding:0 8px 22px; }
.mark { width:38px; height:38px; border-radius:10px; display:grid; place-items:center; background:var(--accent); color:white; font-weight:800; }
.brand strong { color:white; display:block; }
.brand small { color:#93a4ba; letter-spacing:.04em; text-transform:uppercase; font-size:11px; }
aside nav, .aside-foot { display:flex; flex-direction:column; gap:4px; }
aside nav a, .aside-foot a, button.link { color:var(--sidebar-text); text-decoration:none; border-radius:9px; padding:10px 12px; background:transparent; border:0; text-align:left; cursor:pointer; }
aside nav a.on, aside nav a:hover { background:rgba(255,255,255,.08); color:white; }
.aside-foot { margin-top:auto; }
.top { display:flex; justify-content:space-between; padding:16px 28px; background:rgba(255,255,255,.8); border-bottom:1px solid var(--line); }
.top span { color:var(--muted); font-size:13px; }
main { padding:28px; max-width:1100px; }
.card { background:white; border:1px solid var(--line); border-radius:14px; padding:18px; }
.form { max-width:520px; }
.stats { display:grid; grid-template-columns:repeat(4,1fr); gap:14px; margin:18px 0 8px; }
.stat b, .stats b { display:block; font-size:28px; }
label { display:block; font-size:13px; font-weight:650; margin-bottom:12px; }
input, select, textarea { display:block; width:100%; margin-top:6px; padding:10px 12px; border:1px solid #d5dce8; border-radius:8px; background:white; }
textarea { min-height:90px; }
.btn { display:inline-flex; align-items:center; background:var(--accent); color:white; border:0; border-radius:8px; padding:10px 14px; text-decoration:none; cursor:pointer; font-weight:700; }
.btn.secondary { background:white; color:var(--text); border:1px solid var(--line); }
.btn.small { padding:6px 10px; font-size:13px; }
.btn.danger { background:var(--bad); }
.flash { border-radius:10px; padding:12px 14px; margin:0 0 16px; }
.flash.ok { background:var(--ok-bg); color:var(--ok); }
.flash.error { background:var(--bad-bg); color:var(--bad); }
table { width:100%; border-collapse:collapse; background:white; border-radius:12px; overflow:hidden; }
th, td { text-align:left; padding:10px 12px; border-bottom:1px solid var(--line); vertical-align:top; }
code { font-family:Consolas, monospace; font-size:13px; }
.login-card { width:min(460px,100%); margin:8vh auto; }
.row, .actions form { display:flex; gap:8px; align-items:center; flex-wrap:wrap; }
@media (max-width:800px) {
  .app { grid-template-columns:1fr; }
  .stats { grid-template-columns:1fr 1fr; }
}