:root{--bg:#f5f7fb;--card:#fff;--text:#1d2633;--muted:#6b7480;--line:#e3e8ef;--accent:#2674ff;--danger:#d9344a;--ok:#18864b;--side:#ffffff}*{box-sizing:border-box}body{margin:0;font-family:Inter,Segoe UI,Arial,sans-serif;background:var(--bg);color:var(--text)}a{color:var(--accent);text-decoration:none}.sidebar{position:fixed;left:0;top:0;bottom:0;width:240px;background:var(--side);border-right:1px solid var(--line);padding:22px 14px;overflow:auto}.brand{font-size:24px;font-weight:800;padding:8px 12px 20px}.sidebar a{display:block;color:#344050;padding:10px 12px;border-radius:10px;margin:2px 0}.sidebar a:hover{background:#eef4ff}.nav-title{font-size:12px;color:var(--muted);font-weight:800;text-transform:uppercase;margin:20px 12px 7px}.nav-sub{margin:10px 12px 2px;font-weight:700}.topbar{position:fixed;left:240px;right:0;top:0;height:72px;background:#fff;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;padding:0 28px;z-index:4}.profile{display:flex;align-items:center;gap:10px}.profile img{width:38px;height:38px;border-radius:50%}.profile form{margin:0}.linkbtn{background:transparent;color:var(--accent);padding:6px;border:0}.content{margin-left:240px;padding:105px 36px 50px;max-width:1300px}.auth-wrap{min-height:100vh;display:grid;place-items:center;padding:20px}.auth-card{width:min(440px,100%);background:#fff;padding:30px;border:1px solid var(--line);border-radius:18px;box-shadow:0 12px 40px rgba(30,50,80,.08)}label{display:block;font-weight:700;margin:14px 0 6px}input{width:100%;padding:12px 13px;border:1px solid #ccd4df;border-radius:10px;font:inherit;margin-top:6px}button,.button-link{display:inline-block;border:0;background:var(--accent);color:#fff;padding:11px 16px;border-radius:10px;font-weight:800;cursor:pointer}form>button{margin-top:14px}.panel{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;margin:15px 0}.narrow{max-width:600px}.hero{background:#fff;border:1px solid var(--line);border-radius:20px;padding:32px}.code-form{display:flex;gap:10px;margin-top:22px}.code-form input{margin:0;font-size:18px}.code-form button{margin:0;min-width:130px}.alert{padding:12px 14px;border-radius:10px;margin:12px 0}.error{background:#fff1f2;color:#a92035}.success-card{background:#effaf4;border:1px solid #bfe7d0;border-radius:14px;padding:20px;margin:18px 0}.reward-code{font-family:Consolas,monospace;font-size:28px;font-weight:900;letter-spacing:2px;padding:12px;background:#fff;border:1px dashed #9eb0c7;border-radius:10px;display:inline-block;margin:8px 0}.reward-code.small{font-size:18px}.row{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-bottom:1px solid var(--line)}.row:last-child{border:0}small{display:block;color:var(--muted);margin-top:5px}.badge{display:inline-block;padding:6px 9px;border-radius:999px;font-size:12px;font-weight:800}.badge.ok{background:#e7f7ee;color:var(--ok)}.badge.danger{background:#ffebee;color:var(--danger)}.badge.used{background:#edf0f4;color:#57616e}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:12px;border-bottom:1px solid var(--line);vertical-align:top}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:14px}.inline{display:flex;gap:8px;margin:8px 0}.inline input{margin:0}.inline button{margin:0;white-space:nowrap}.secondary{background:#5d6b7a}.dangerbtn{background:var(--danger)}.dot{display:inline-block;width:9px;height:9px;border-radius:50%;margin-right:6px}.online{background:#20b25b}.offline{background:#9aa3ad}.search{display:flex;gap:10px}.search input{margin:0}.search button{margin:0}.user-card{color:inherit;display:block}.actions{display:flex;gap:10px;flex-wrap:wrap}.actions form{margin:0}details{margin-top:12px}summary{cursor:pointer;font-weight:800}@media(max-width:850px){.sidebar{position:static;width:100%;height:auto}.topbar{position:static}.content{margin:0;padding:25px}.topbar{margin-left:0}.code-form,.search,.inline{flex-direction:column}.profile{flex-wrap:wrap}}