:root{font-family:Inter,"PingFang SC","Microsoft YaHei",sans-serif;color:#14213a;background:#f4f7f6;--green:#0e9f74;--navy:#071426;--line:#e4e9e7}*{box-sizing:border-box}body{margin:0}.hidden{display:none!important}button,input,select,textarea{font:inherit}.login-shell{min-height:100vh;display:grid;place-items:center;background:radial-gradient(circle at 75% 15%,#173b4a,#071426 55%)}.login-card{width:min(420px,calc(100% - 32px));background:#fff;padding:42px;border-radius:24px;box-shadow:0 30px 80px #0005}.brand-mark{font-weight:900;letter-spacing:.14em;color:var(--green)}h1{margin:10px 0 6px}.login-card p{color:#73808d;margin:0 0 28px}label{display:grid;gap:7px;color:#576270;font-size:13px;font-weight:700;margin:14px 0}input,select,textarea{width:100%;border:1px solid var(--line);background:#f8faf9;border-radius:10px;padding:11px 12px;color:#162238}textarea{min-height:92px;resize:vertical}button{border:0;border-radius:10px;padding:11px 16px;cursor:pointer;font-weight:750}.primary{background:var(--green);color:#fff;width:100%;margin-top:10px}.secondary{background:#e8f7f2;color:#087554}.danger{background:#fff0f0;color:#c43c3c}.error{color:#c43c3c;margin-top:12px}.app{min-height:100vh;display:grid;grid-template-columns:240px 1fr}aside{background:var(--navy);color:#fff;padding:26px 18px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}.logo{padding:8px 10px 28px}.logo b,.logo small{display:block}.logo small{color:#94a4b5;margin-top:6px}nav{display:grid;gap:7px}nav button,.logout{background:transparent;color:#aeb9c5;text-align:left}nav button.active,nav button:hover{background:#153047;color:#fff}.logout{margin-top:auto}main{padding:30px 36px;min-width:0}header{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}header h1{margin:0}header p{margin:5px 0;color:#7c8792;font-size:13px}.cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.stat,.panel{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px}.stat strong{display:block;font-size:32px;margin-top:10px}.stat span{color:#74808c}.panel{margin-top:18px}.panel-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.panel-head h2{margin:0;font-size:18px}.table-wrap{overflow:auto}table{border-collapse:collapse;width:100%;min-width:760px}th,td{text-align:left;padding:12px 10px;border-bottom:1px solid #edf0ef;font-size:13px}th{color:#74808c;background:#fafbfb}.badge{display:inline-block;border-radius:999px;padding:5px 9px;font-size:12px;font-weight:750}.registered,.paid{background:#e4f8f0;color:#087554}.waitlist,.pending{background:#fff3d7;color:#9b6500}.eligible{background:#e9efff;color:#365fb4}.grid-form{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.grid-form .wide{grid-column:span 2}.actions{display:flex;gap:8px;align-items:center}.actions button{padding:8px 11px}.event-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;margin-bottom:16px}.event-card h3{margin:0}.event-card .top{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}.toast{position:fixed;right:24px;bottom:24px;background:#112338;color:#fff;padding:13px 18px;border-radius:10px;opacity:0;transform:translateY(10px);transition:.2s;pointer-events:none}.toast.show{opacity:1;transform:none}@media(max-width:900px){.app{grid-template-columns:1fr}aside{height:auto;position:static;padding:16px}.logo{padding:5px 7px 15px}nav{display:flex;overflow:auto}nav button{white-space:nowrap}.logout{display:none}main{padding:22px 16px}.cards{grid-template-columns:1fr 1fr}.grid-form{grid-template-columns:1fr}.grid-form .wide{grid-column:auto}}@media(max-width:520px){.cards{grid-template-columns:1fr}header{align-items:flex-start}.login-card{padding:28px}}