:root{--navy:#071727;--navy2:#0d2942;--blue:#25a7f0;--cyan:#54d6d0;--paper:#f4f7fa;--ink:#07111f;--muted:#66778a;--line:#dfe7ee;--white:#fff}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,sans-serif}.topbar{padding:36px max(5vw,24px);display:flex;justify-content:space-between;align-items:center;background:linear-gradient(135deg,var(--navy),var(--navy2));color:#fff}.topbar h1{margin:3px 0;font-size:clamp(30px,4vw,48px)}.topbar p{margin:0;color:#b7c9d9}.eyebrow{color:#7ee3df!important;font-size:12px;font-weight:800;letter-spacing:2px}.top-actions{display:flex;gap:10px}.top-actions a{padding:12px 16px;border:1px solid #ffffff3b;border-radius:11px;color:#fff;text-decoration:none;font-weight:700}.top-actions .logout{background:#ffffff14}.dashboard{width:min(1180px,calc(100% - 36px));margin:32px auto 70px}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:18px}.stats article,.panel{border:1px solid var(--line);border-radius:20px;background:var(--white);box-shadow:0 18px 45px #07111f12}.stats article{padding:25px}.stats span{display:block;color:var(--muted);font-size:14px}.stats strong{display:block;margin-top:8px;font-size:35px}.panel{padding:27px;margin-bottom:18px}.panel-head h2{margin:0;font-size:20px}.panel-head p{margin:4px 0;color:var(--muted)}.chart{height:245px;margin-top:25px;display:flex;gap:10px;align-items:flex-end;border-bottom:1px solid var(--line)}.bar-item{height:225px;flex:1;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;gap:7px;color:var(--muted);font-size:11px}.bar{width:min(32px,72%);min-height:3px;border-radius:8px 8px 2px 2px;background:linear-gradient(var(--cyan),var(--blue))}.bar-value{font-weight:700;color:var(--ink)}.data-grid{display:grid;grid-template-columns:1.2fr 1fr .8fr;gap:18px}.ranking{margin-top:15px}.ranking div{display:flex;justify-content:space-between;gap:15px;padding:13px 0;border-bottom:1px solid var(--line)}.ranking div:last-child{border-bottom:0}.ranking span{overflow:hidden;text-overflow:ellipsis;color:var(--muted)}.empty{color:var(--muted)}.auth-page{min-height:100vh;display:grid;place-items:center;padding:20px;background:linear-gradient(145deg,var(--navy),var(--navy2))}.auth-card{width:min(440px,100%);padding:38px;border-radius:24px;background:#fff;box-shadow:0 30px 70px #0005}.mark{width:50px;height:50px;display:grid;place-items:center;border-radius:13px;background:linear-gradient(135deg,var(--blue),var(--cyan));font-size:25px;font-weight:800}.auth-card h1{margin:4px 0 22px}.auth-card label{display:block;margin:14px 0;font-weight:700}.auth-card input{width:100%;margin-top:6px;padding:14px;border:1px solid var(--line);border-radius:10px;font:inherit}.auth-card button{width:100%;padding:14px;border:0;border-radius:11px;background:linear-gradient(135deg,var(--blue),var(--cyan));font-size:16px;font-weight:800;cursor:pointer}.alert{margin:15px 0;padding:13px;border-radius:10px}.alert.error{background:#ffeded;color:#9b2222}.alert.success{background:#e8faf4;color:#086142}.back{display:block;margin-top:20px;color:var(--muted);text-align:center;text-decoration:none}
@media(max-width:850px){.stats{grid-template-columns:repeat(2,1fr)}.data-grid{grid-template-columns:1fr}.topbar{align-items:flex-start;flex-direction:column;gap:22px}.chart{overflow-x:auto}.bar-item{min-width:38px}}
@media(max-width:480px){.stats{grid-template-columns:1fr}.panel{padding:20px}.top-actions{width:100%}.top-actions a{flex:1;text-align:center}}