:root{
  --bg:#f4f6f8; --panel:#ffffff; --ink:#17202a; --muted:#667085;
  --brand:#17324d; --accent:#b8945a; --line:#e4e7ec; --danger:#b42318; --ok:#027a48;
  --shadow:0 18px 50px rgba(23,50,77,.10);
}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--ink)}
a{color:var(--brand)}
.shell{min-height:100vh;display:grid;grid-template-columns:260px 1fr}
.sidebar{background:var(--brand);color:white;padding:30px 22px}
.brand{font-weight:800;font-size:24px;letter-spacing:.08em}.brand span{color:var(--accent)}
.sidebar p{color:#cbd5df;font-size:13px;margin:8px 0 30px}
.nav button{width:100%;text-align:left;border:0;background:transparent;color:#dbe4ec;padding:12px 14px;border-radius:10px;margin:3px 0;cursor:pointer;font-size:15px}
.nav button:hover,.nav button.active{background:rgba(255,255,255,.1);color:white}
.main{padding:34px;max-width:1200px;width:100%;margin:auto}
.top{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:28px}
h1,h2,h3{margin-top:0} h1{font-size:30px}
.muted{color:var(--muted)}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:var(--shadow)}
.stat{font-size:28px;font-weight:750;margin-top:8px}
.btn{border:0;border-radius:10px;padding:11px 16px;background:var(--brand);color:white;font-weight:650;cursor:pointer}
.btn.secondary{background:white;color:var(--brand);border:1px solid var(--line)}
.btn.gold{background:var(--accent);color:#fff}
input,select,textarea{width:100%;padding:12px 13px;border:1px solid #d0d5dd;border-radius:10px;background:white;font:inherit;margin-top:6px}
label{display:block;font-size:13px;font-weight:650;margin:14px 0 0}
.auth{min-height:100vh;display:grid;place-items:center;padding:24px;background:linear-gradient(135deg,#eef2f5,#faf9f6)}
.auth-card{width:min(440px,100%);background:white;padding:34px;border-radius:20px;box-shadow:var(--shadow);border:1px solid var(--line)}
.auth .brand{color:var(--brand);margin-bottom:6px}.message{margin-top:14px;font-size:14px}.error{color:var(--danger)}.success{color:var(--ok)}
table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:12px;border-bottom:1px solid var(--line);font-size:14px}
.section{display:none}.section.active{display:block}.row{display:flex;gap:12px;align-items:end}.row>*{flex:1}
.weight-list{max-height:360px;overflow:auto}.photo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.photo-grid img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:12px}
@media(max-width:850px){.shell{grid-template-columns:1fr}.sidebar{padding:18px}.grid{grid-template-columns:1fr}.main{padding:20px}.photo-grid{grid-template-columns:repeat(2,1fr)}}