:root{color-scheme:light;font-family:system-ui,-apple-system,Segoe UI,sans-serif}body{margin:0;background:#f6f7fb;color:#0b0f19}.layout{display:flex;min-height:100vh}.sidebar{width:220px;background:#0b0f19;color:#fff;padding:24px 16px;flex-shrink:0}.sidebar h1{font-size:18px;margin:0 0 24px}.sidebar nav a{display:block;color:#cbd2e1;text-decoration:none;padding:8px 10px;border-radius:6px;margin-bottom:4px;font-size:14px}.sidebar nav a.active,.sidebar nav a:hover{background:#ffffff14;color:#fff}.main{flex:1;padding:32px 40px}.card{background:#fff;border:1px solid #e4e7ee;border-radius:10px;padding:24px;max-width:640px;margin-bottom:24px}label{display:block;font-size:13px;font-weight:600;margin-bottom:6px}input[type=text],input[type=file]{width:100%;padding:8px 10px;border:1px solid #d3d8e2;border-radius:6px;margin-bottom:16px;box-sizing:border-box;font-size:14px}button{background:#0b0f19;color:#fff;border:none;border-radius:6px;padding:10px 18px;font-size:14px;cursor:pointer}button:disabled{opacity:.5;cursor:default}.error{color:#b3261e;font-size:13px;margin-bottom:12px}table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:8px 6px;border-bottom:1px solid #eceef3}.page{max-width:720px;margin:0 auto;padding:40px 24px}.login-prompt{text-align:center}.login-prompt a{display:inline-block;margin-top:12px;background:#0b0f19;color:#fff;text-decoration:none;padding:10px 18px;border-radius:6px;font-size:14px}